CN112063958B - Reciprocating pump plunger coated with amorphous alloy coating and processing technology thereof - Google Patents
Reciprocating pump plunger coated with amorphous alloy coating and processing technology thereof Download PDFInfo
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- CN112063958B CN112063958B CN202010735978.8A CN202010735978A CN112063958B CN 112063958 B CN112063958 B CN 112063958B CN 202010735978 A CN202010735978 A CN 202010735978A CN 112063958 B CN112063958 B CN 112063958B
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- 239000011248 coating agent Substances 0.000 title claims abstract description 104
- 238000000576 coating method Methods 0.000 title claims abstract description 104
- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 67
- 238000005516 engineering process Methods 0.000 title claims abstract description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000010935 stainless steel Substances 0.000 claims abstract description 26
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000007822 coupling agent Substances 0.000 claims abstract description 20
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
- 230000037452 priming Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 229910003310 Ni-Al Inorganic materials 0.000 claims abstract description 12
- 238000007788 roughening Methods 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims description 40
- 238000010285 flame spraying Methods 0.000 claims description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- 239000002987 primer (paints) Substances 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000005488 sandblasting Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 10
- 230000009467 reduction Effects 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000007751 thermal spraying Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- PXHVJJICTQNCMI-OUBTZVSYSA-N nickel-60 atom Chemical compound [60Ni] PXHVJJICTQNCMI-OUBTZVSYSA-N 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/129—Flame spraying
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/007—Alloys based on nickel or cobalt with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a reciprocating pump plunger coated with an amorphous alloy coating and a processing technology thereof, comprising a stainless steel-based blank plunger, a priming coating, an amorphous alloy coating and an aminosilane coupling agent, wherein the priming coating, the amorphous alloy coating and the aminosilane coupling agent are sequentially coated on a reciprocating area of the stainless steel-based blank plunger; the priming coating is Ni-Al powder; the amorphous alloy coating is an iron-based amorphous alloy coating and is prepared by designing a base material, roughening the surface, coating, post-treating and sealing holes. According to the reciprocating pump plunger and the processing technology thereof, the properties of corrosion resistance, high temperature resistance, wear resistance, friction reduction, cavitation resistance and the like of the reciprocating pump plunger are improved by using the amorphous structure coating.
Description
Technical Field
The invention relates to the technical field of mechanical manufacturing, in particular to a reciprocating pump plunger coated with an amorphous alloy coating and a processing technology thereof.
Background
In the manufacture of mechanical parts, it is often encountered that the surface layers of the parts are required to have higher mechanical properties than the body of the part, such as hardness, strength, wear resistance, heat resistance, corrosion resistance, etc. For this purpose, it is often used to apply a coating of a material having desired properties to the surface of the part, and this coating technique has been widely used in machine manufacturing. Therefore, it is necessary to provide a reciprocating pump plunger coated with an amorphous alloy coating to solve the above problems.
Most of domestic petroleum exploitation adopts stratum water injection oil extraction mode, the reciprocating plunger water injection pump is key equipment for water injection oil extraction, the working pressure is about 10-40Mpa, the plunger is the core component of the oilfield reinjection water pump, the water injection quality is complicated water produced by stratum, and the plunger contains silt particles and corrosive substances, and due to abrasion, corrosion and pressure existence, the plunger has the conditions of groove, pitting, coating falling and the like, and the plunger is invalid due to poor sealing. Because the plunger is out of order, the equipment has to be shut down and replaced, which affects production and generates frequent replacement cost of parts of the plunger, resulting in reduced equipment utilization.
At present, the domestic petroleum water injection pump plunger generally adopts corrosion-resistant alloy as a base material, and the surface of the plunger is welded with alloy materials such as nickel 60, and the service life of the plunger with the working pressure of 30Mpa is generally about 240 hours and is shorter due to different water quality.
Disclosure of Invention
(One) solving the technical problems
The invention aims to provide a reciprocating pump plunger coated with an amorphous alloy coating and a processing technology thereof, so as to solve the problem of shorter service life in the background technology, and simultaneously, the primer coating, the amorphous alloy coating and the aminosilane coupling agent which are sequentially coated on the reciprocating area of a stainless steel-based blank plunger improve the performances of the reciprocating pump plunger in the aspects of corrosion resistance, high temperature resistance, wear resistance, friction reduction, cavitation resistance and the like.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions:
A reciprocating pump plunger coated with an amorphous alloy coating comprises a stainless steel-based blank plunger, and a priming coating, an amorphous alloy coating and an aminosilane coupling agent which are sequentially coated on the reciprocating area of the stainless steel-based blank plunger;
the priming coating is Ni-Al powder;
The amorphous alloy coating is an iron-based amorphous alloy coating.
Preferably, the Ni content in the Ni-Al powder is 80% and the Al content is 20%.
By adopting the technical scheme, the primer coating is Ni-Al powder, can form firm combination with the surface of the stainless steel substrate, generates exothermic chemical reaction between components at the high temperature of thermal spraying flame, produces intermetallic compounds, releases a large amount of heat, supplements and heats the thin layer of the surface of the substrate to a molten state, and promotes the injection molten particles and the surface of the substrate to form micro-zone metallurgy. And the primer coating can form a compact oxidation-resistant and corrosion-resistant coating so as to prevent the invasion of oxygen or corrosive medium pores at high temperature and protect the base metal from oxidation and corrosion. In addition, a rough surface of the bonding bottom layer can be formed, and the surface roughness of the rough surface is even higher than that of the sand blasting pretreatment, so that the bonding strength between the amorphous coating and the bonding bottom layer is improved.
Preferably, the iron-based amorphous alloy in the iron-based amorphous alloy coating is Fe 79.8Cu0.6Nb2.6Si8B9.
By adopting the technical scheme, the iron-based amorphous alloy coating has the characteristics of low friction coefficient, good thermal conductivity, high binding force and the like, so that the application of the iron-based amorphous alloy coating in the field of surface engineering is attractive.
The invention also provides a processing technology of the reciprocating pump plunger coated with the amorphous alloy coating, which comprises the following steps:
S1: the design of a base material, namely, the base material is made of stainless steel, the base material is subjected to primary processing according to the design size of a plunger, a stainless steel-based blank plunger is obtained, and except for a coating allowance of 0.5mm which is reserved on a single side of a reciprocating operation area of the plunger, other areas should meet the design requirement of the plunger;
S2: performing surface roughening treatment, namely performing sand blasting roughening treatment on the surface of the plunger by adopting silicon carbide or sand with the same hardness, wherein the roughness is required to be more than Sa10.5 mu m;
S3: coating, namely spraying a primer coating in a reciprocating operation area of a reciprocating pump plunger by adopting a supersonic flame spraying technology, reducing the surface temperature of the reciprocating pump plunger to 50 ℃, and then spraying an amorphous alloy coating with the thickness of 0.4mm by adopting a second supersonic flame spraying technology;
s4: and (3) post-treatment, namely grinding the reciprocating pump plunger obtained in the step (S3) by using a grinder to obtain the grinded reciprocating pump plunger.
S5: sealing holes, namely sealing holes by adopting an aminosilane coupling agent, soaking for 3-4 hours at 50 ℃, and then solidifying to obtain the reciprocating pump plunger;
preferably, in the step S3, the thickness of the sprayed primer layer is 0.1mm;
preferably, the curing process parameters in the step S5 are baking and curing at 125-140 ℃;
By adopting the technical scheme, the addition of the aminosilane coupling agent can obviously improve the adhesive force between the coating and the substrate, and the silicon hydroxyl and the substrate act as chemical bonds. The hole sealing agent has good wettability, strong cohesiveness, good chemical stability, and stronger corrosion resistance and impact resistance;
Preferably, the primary supersonic flame spraying technology in the step S3 includes the following process parameters: the flow rates of oxygen and nitrogen are 1700-1900SCFH,22-26SCFH, the spraying power is 18-24KW, the spraying distance is 380-400mm, and the powder feeding rate is 75-80g/min;
preferably, the second supersonic flame spraying technology in the step S3 includes the following technological parameters: the flow rates of oxygen and nitrogen are 1630-1810SCFH,25-29SCFH, the spraying power is 16-22KW, the spraying distance is 340-350mm, and the powder feeding rate is 60-65g/min;
By adopting the technical scheme, the ultrasonic flame spraying technology is adopted for spraying in the processing technology, and has the advantages that: (1) less heat input is used. Compared with thermal spraying technologies such as plasma spraying, electric arc spraying and the like, the flame temperature is lower (600K-2200K adjustable). The lower flame temperature ensures that the coating is not oxidized in the spraying process, and the growth of nano particles is prevented. At the same time, the lower flame temperature prevents deformation of the substrate; (2) higher particle velocity. The spray particles are usually accelerated to a speed of 3-5 Mach cones after passing through the gun barrel, and the particles moving at high speed reach the substrate and collide with the substrate to deform, so that a compact coating is formed. In general, the higher the particle velocity, the better the particle flattening effect and thus the higher the bonding strength. The flying speed of the particles is obviously better than other thermal spraying technologies. In the ultrasonic flame spraying technology, particles are accelerated by ultrasonic flame flow, while other thermal spraying technologies enable the particles to reach the surface of a substrate by compressing gas; (3) higher deposition efficiency. Compared with the coating preparation technologies such as brush plating, PVD, CVD, sputter coating and the like, the supersonic flame spraying technology can prepare the coating with the thickness meeting the use requirement in a shorter time, and the other spraying technologies can usually be completed in a plurality of hours; (4) spraying restriction is small. The supersonic flame spraying technology can be used for spraying large outdoor workpieces and small workpieces, and the spraying thickness is controllable.
(III) beneficial effects
Compared with the prior art, the invention provides the reciprocating pump plunger coated with the amorphous alloy coating and the processing technology thereof, firstly, the priming coating is sprayed on the stainless steel substrate to promote the formation of micro-zone metallurgy between the sprayed molten particles and the surface of the substrate, then, the iron-based amorphous alloy layer is sprayed on the surface of the substrate, so that the hardness, strength, elasticity and corrosion resistance of the surface of a metal component can be effectively improved, and finally, the aminosilane coupling agent is used as a hole sealing agent to improve the corrosion resistance and impact resistance of the substrate, so that the prepared reciprocating pump plunger has the bonding strength of 99-106MPa, the hardness of 89-95HRC, the porosity of 0.03-0.04 and the service life of 2580-2675h under the working pressure of 15 MPa.
Drawings
FIG. 1 is a schematic illustration of a reciprocating pump plunger of the present invention after machining;
fig. 2 is a schematic diagram of the reciprocating pump plunger of the present invention prior to processing.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
1-2, A reciprocating pump plunger coated with an amorphous alloy coating comprises a stainless steel-based blank plunger, and a priming coating, an amorphous alloy coating and an aminosilane coupling agent which are sequentially coated on the reciprocating area of the stainless steel-based blank plunger;
the priming coating is Ni-Al powder;
The amorphous alloy coating is an iron-based amorphous alloy coating.
The Ni content in the Ni-Al powder is 80 percent and the Al content is 20 percent.
The iron-based amorphous alloy in the iron-based amorphous alloy coating is Fe 79.8Cu0.6Nb2.6Si8B9.
As shown in fig. 1-2, a process for manufacturing a reciprocating pump plunger coated with an amorphous alloy coating comprises the steps of:
S1: the design of a base material, namely, the base material is made of stainless steel, the base material is subjected to primary processing according to the design size of a plunger, a stainless steel-based blank plunger is obtained, and except for a coating allowance of 0.5mm which is reserved on a single side of a reciprocating operation area of the plunger, other areas should meet the design requirement of the plunger;
S2: performing surface roughening treatment, namely performing sand blasting roughening treatment on the surface of the plunger by adopting silicon carbide or sand with the same hardness, wherein the roughness Sa is required to be 10.5-12 mu m;
S3: coating, namely spraying a primer coating in a reciprocating operation area of a plunger of a reciprocating pump by adopting a supersonic flame spraying technology, wherein the thickness of the primer coating is 0.1mm, reducing the surface temperature of the plunger of the reciprocating pump to 50 ℃, and then spraying an amorphous alloy coating in a second supersonic flame spraying technology, wherein the spraying thickness of the amorphous alloy coating is 0.4mm; the primary supersonic flame spraying technology comprises the following technological parameters: the oxygen flow and the nitrogen flow are 1700SCFH and 22SCFH respectively, the spraying power is 18KW, the spraying distance is 380mm, and the powder feeding speed is 75g/min; the second supersonic flame spraying technology comprises the following technological parameters: the oxygen flow and the nitrogen flow are respectively 1630SCFH,25SCFH, the spraying power is 16KW, the spraying distance is 340mm, and the powder feeding rate is 60g/min;
s4: and (3) post-treatment, namely grinding the reciprocating pump plunger obtained in the step (S3) by using a grinder to obtain the grinded reciprocating pump plunger.
S5: sealing holes, adopting an aminosilane coupling agent to carry out hole sealing treatment, soaking for 3 hours at 50 ℃, and then baking and curing at 125 ℃ to obtain the reciprocating pump plunger.
Example 2
1-2, A reciprocating pump plunger coated with an amorphous alloy coating comprises a stainless steel-based blank plunger, and a priming coating, an amorphous alloy coating and an aminosilane coupling agent which are sequentially coated on the reciprocating area of the stainless steel-based blank plunger;
the priming coating is Ni-Al powder;
The amorphous alloy coating is an iron-based amorphous alloy coating.
The Ni content in the Ni-Al powder is 80 percent and the Al content is 20 percent.
The iron-based amorphous alloy in the iron-based amorphous alloy coating is Fe 79.8Cu0.6Nb2.6Si8B9.
As shown in fig. 1-2, a process for manufacturing a reciprocating pump plunger coated with an amorphous alloy coating comprises the steps of:
S1: the design of a base material, namely, the base material is made of stainless steel, the base material is subjected to primary processing according to the design size of a plunger, a stainless steel-based blank plunger is obtained, and except for a coating allowance of 0.5mm which is reserved on a single side of a reciprocating operation area of the plunger, other areas should meet the design requirement of the plunger;
s2: performing surface roughening treatment, namely performing sand blasting roughening treatment on the surface of the plunger by adopting silicon carbide or sand with the same hardness, wherein the roughness Sa is required to be 12-14 mu m;
S3: coating, namely spraying a primer coating in a reciprocating operation area of a plunger of a reciprocating pump by adopting a supersonic flame spraying technology, wherein the thickness of the primer coating is 0.1mm, reducing the surface temperature of the plunger of the reciprocating pump to 50 ℃, and then spraying an amorphous alloy coating in a second supersonic flame spraying technology, wherein the spraying thickness of the amorphous alloy coating is 0.4mm; the primary supersonic flame spraying technology comprises the following technological parameters: the flow rates of oxygen and nitrogen are 180 SCFH and 24SCFH respectively, the spraying power is 19KW, the spraying distance is 420mm, and the powder feeding rate is 78g/min; the second supersonic flame spraying technology comprises the following technological parameters: the flow rates of oxygen and nitrogen are 1720SCFH and 27SCFH respectively, the spraying power is 18KW, the spraying distance is 345mm, and the powder feeding rate is 63g/min;
s4: and (3) post-treatment, namely grinding the reciprocating pump plunger obtained in the step (S3) by using a grinder to obtain the grinded reciprocating pump plunger.
S5: sealing holes, adopting an aminosilane coupling agent to carry out hole sealing treatment, soaking for 3.5 hours at 50 ℃, and then baking and curing at 130 ℃ to obtain the reciprocating pump plunger.
Example 3
1-2, A reciprocating pump plunger coated with an amorphous alloy coating comprises a stainless steel-based blank plunger, and a priming coating, an amorphous alloy coating and an aminosilane coupling agent which are sequentially coated on the reciprocating area of the stainless steel-based blank plunger;
the priming coating is Ni-Al powder;
The amorphous alloy coating is an iron-based amorphous alloy coating.
The Ni content in the Ni-Al powder is 80 percent and the Al content is 20 percent.
The iron-based amorphous alloy in the iron-based amorphous alloy coating is Fe 79.8Cu0.6Nb2.6Si8B9.
As shown in fig. 1-2, a process for manufacturing a reciprocating pump plunger coated with an amorphous alloy coating comprises the steps of:
S1: the design of a base material, namely, the base material is made of stainless steel, the base material is subjected to primary processing according to the design size of a plunger, a stainless steel-based blank plunger is obtained, and except for a coating allowance of 0.5mm which is reserved on a single side of a reciprocating operation area of the plunger, other areas should meet the design requirement of the plunger;
s2: performing surface roughening treatment, namely performing sand blasting roughening treatment on the surface of the plunger by adopting silicon carbide or sand with the same hardness, wherein the roughness is required to be more than Sa13.5 mu m;
s3: coating, namely spraying a primer coating in a reciprocating operation area of a plunger of a reciprocating pump by adopting a supersonic flame spraying technology, wherein the thickness of the primer coating is 0.1mm, reducing the surface temperature of the plunger of the reciprocating pump to 50 ℃, and then spraying an amorphous alloy coating in a second supersonic flame spraying technology, wherein the spraying thickness of the amorphous alloy coating is 0.4mm; the primary supersonic flame spraying technology comprises the following technological parameters: the oxygen flow and the nitrogen flow are respectively 1900SCFH and 26SCFH, the spraying power is 24KW, the spraying distance is 400mm, and the powder feeding rate is 80g/min; the second supersonic flame spraying technology comprises the following technological parameters: the flow rates of oxygen and nitrogen are respectively 1810SCFH and 29SCFH, the spraying power is 22KW, the spraying distance is 350mm, and the powder feeding rate is 65g/min;
s4: and (3) post-treatment, namely grinding the reciprocating pump plunger obtained in the step (S3) by using a grinder to obtain the grinded reciprocating pump plunger.
S5: sealing holes, adopting an aminosilane coupling agent to carry out hole sealing treatment, soaking for 4 hours at 50 ℃, and then baking and curing at 140 ℃ to obtain the reciprocating pump plunger.
Comparative example 1
The plunger of the reciprocating pump is formed without a priming coating, and the priming coating is not added in the processing technology;
Comparative example 2
The reciprocating pump plunger is formed without an amorphous alloy coating, and the amorphous alloy coating is not added in the processing technology;
comparative example 3
The reciprocating pump plunger is formed without an aminosilane coupling agent, and the aminosilane coupling agent is not added in the processing technology; conventional pore sealing agents are used.
The aminosilane coupling agent is N-beta- (aminoethyl) -gamma-aminopropyl trimethoxy silane
The reciprocating pump plungers prepared in the above examples 1 to 3 and comparative examples 1 to 3 were examined, and the bonding condition of the coating layer and the stainless steel substrate was examined to obtain the following data:
From the table, the reciprocating pump plunger prepared in the embodiment 1-3 has the bonding strength of 99-106MPa, the hardness of 89-95HRC, the porosity of 0.03-0.04% and the service life of 2580-2675h under the working pressure of 15MPa, so that the coating and the processing technology adopted by the invention can be illustrated, the bonding effect between the reciprocating pump plunger matrix and the coating is relatively good, and the service life of the reciprocating pump plunger is prolonged;
Comparative example 1, lacking a primer coating, produced a reciprocating pump plunger, having a bond strength of 70MPa, a hardness of 65HRC, a porosity of 0.26%, and a service life of 2105 hours at 15MPa working pressure, shows that the bond strength between the reciprocating pump plunger and the coating is reduced, the hardness is reduced, and the service life is also reduced in the absence of the primer coating;
Comparative example 2, lacking an amorphous alloy coating, produced a reciprocating pump plunger, having a bond strength of 55MPa, a hardness of 48HRC, a porosity of 0.35%, and a service life of 1546 hours at a working pressure of 15MPa, shows that the bond strength between the reciprocating pump plunger and the coating is significantly reduced, the hardness is significantly reduced, and the service life is also significantly reduced in the absence of an amorphous alloy coating;
In comparative example 3, the aminosilane coupling agent is absent, the prepared reciprocating pump plunger has the bonding strength of 89MPa, the hardness of 86HRC, the porosity of 1.5 percent and the service life of 2209h under the working pressure of 15MPa, and the aminosilane coupling agent can be seen that the bonding strength between the reciprocating pump plunger and the coating is reduced, the hardness is slightly reduced, the porosity is obviously increased, and the service life is also reduced.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The processing technology of the reciprocating pump plunger coated with the amorphous alloy coating comprises a stainless steel-based blank plunger, and is characterized by further comprising a priming coating, an amorphous alloy coating and an aminosilane coupling agent which are sequentially coated on the reciprocating area of the stainless steel-based blank plunger;
the priming coating is Ni-Al powder;
The amorphous alloy coating is an iron-based amorphous alloy coating;
The method comprises the following steps:
S1: the design of a base material, namely, the base material is made of stainless steel, the base material is subjected to primary processing according to the design size of a plunger, a stainless steel-based blank plunger is obtained, and except for a coating allowance of 0.5mm which is reserved on a single side of a reciprocating operation area of the plunger, other areas should meet the design requirement of the plunger;
s2: performing surface roughening treatment, namely performing sand blasting roughening treatment on the surface of the plunger by adopting silicon carbide or sand with the same hardness, wherein the required roughness Sa is more than 10.5 mu m;
S3: coating, namely spraying a primer coating in a reciprocating operation area of a reciprocating pump plunger by adopting a supersonic flame spraying technology, reducing the surface temperature of the reciprocating pump plunger to 50 ℃, and then spraying an amorphous alloy coating with the thickness of 0.4mm by adopting a second supersonic flame spraying technology;
S4: and (3) post-treatment, namely grinding the reciprocating pump plunger obtained in the step (S3) by using a grinder to obtain a grinded reciprocating pump plunger:
S5: sealing holes, sealing holes by adopting an aminosilane coupling agent, soaking for 3-4 hours at 50 ℃ and then solidifying to obtain the reciprocating pump plunger.
2. The process for manufacturing a reciprocating pump plunger coated with an amorphous alloy coating according to claim 1, wherein the Ni-Al powder has a Ni content of 80% and an Al content of 20%.
3. The process for machining a reciprocating pump plunger coated with an amorphous alloy coating according to claim 1, wherein the iron-based amorphous alloy in the iron-based amorphous alloy coating is Fe 79.8Cu0.6Nb2.6Si8B9.
4. The process for manufacturing a reciprocating pump plunger coated with an amorphous alloy coating according to claim 1, wherein in the step S3, the thickness of the sprayed primer coating is 0.1mm.
5. The process for fabricating a reciprocating pump plunger coated with an amorphous alloy coating according to claim 1, wherein the step S5 curing process parameter is bake curing at 125-140 ℃.
6. The process for machining a reciprocating pump plunger coated with an amorphous alloy coating according to claim 1, wherein the primary supersonic flame spraying technique in step S3 comprises the following process parameters: the flow rates of oxygen and nitrogen are 1700-1900SCFH,22-26SCFH, the spraying power is 18-24KW, the spraying distance is 380-400mm, and the powder feeding rate is 75-80g/min.
7. The process for machining a reciprocating pump plunger coated with an amorphous alloy coating according to claim 1, wherein the second supersonic flame spraying technique in step S3 comprises the following process parameters: the flow rates of oxygen and nitrogen are 1630-1810SCFH,25-29SCFH, the spraying power is 16-22KW, the spraying distance is 340-350mm, and the powder feeding rate is 60-65g/min.
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| CN113564595B (en) * | 2021-08-27 | 2023-09-12 | 三一石油智能装备有限公司 | Disordered alloy coating reinforced valve seat, preparation method thereof and pump |
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| CN106702305A (en) * | 2017-03-28 | 2017-05-24 | 东营金泰技术服务有限公司 | Reciprocating pump 15Mpa pressure plunger piston coated with iron-based amorphous metal coating |
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