CN103643148B - The formula of H-45 high-abrasive material and working method - Google Patents
The formula of H-45 high-abrasive material and working method Download PDFInfo
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- CN103643148B CN103643148B CN201310645534.5A CN201310645534A CN103643148B CN 103643148 B CN103643148 B CN 103643148B CN 201310645534 A CN201310645534 A CN 201310645534A CN 103643148 B CN103643148 B CN 103643148B
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- 239000003082 abrasive agent Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000007669 thermal treatment Methods 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000604 Ferrochrome Inorganic materials 0.000 claims abstract description 4
- 108010038629 Molybdoferredoxin Proteins 0.000 claims abstract description 4
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 238000013461 design Methods 0.000 claims abstract description 4
- 230000001627 detrimental effect Effects 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000000155 melt Substances 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 4
- 150000002910 rare earth metals Chemical class 0.000 claims abstract description 4
- 230000000630 rising effect Effects 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims abstract description 4
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 4
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 abstract description 30
- 238000005260 corrosion Methods 0.000 abstract description 30
- 239000000463 material Substances 0.000 abstract description 23
- 238000006477 desulfuration reaction Methods 0.000 abstract description 6
- 230000023556 desulfurization Effects 0.000 abstract description 6
- 230000003245 working effect Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 15
- 238000012360 testing method Methods 0.000 description 15
- 229910045601 alloy Inorganic materials 0.000 description 13
- 239000000956 alloy Substances 0.000 description 13
- 238000011161 development Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010964 304L stainless steel Substances 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001039 duplex stainless steel Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The formula of H-45 high-abrasive material and a working method, each element is filled a prescription by weight percentage and is: C≤0.07%, Cr26-28%,? Ni5-6%, Mo1.5-2%, Cu1.5-2.5%, V0.1-0.15%,? Re0.015%, all the other are Fe.Its procedure of processing is as follows: 1), first technically pure iron and ferrochrome are added furnace bottom, and energising fusing, treats that its temperature reaches more than 1350 DEG C, then add molybdenum-iron, nickel plate, copper, vanadium; 2), treat that furnace charge all melts, temperature carries out slag making after reaching 1550 DEG C again, removes detrimental impurity; 3), treat that temperature rises to 1560-1600 DEG C, abundant deoxidation and carry out rare earth denaturing treatment; 4), teeming temperature controls at 1560-1600 DEG C, and according to the size feature of foundry goods, design different cast gates and rising head, the amount of carrying feeding is in time to obtain complete foundry goods.Not only corrosion resistant and abrasion resistance are fine by thermal treatment for the material that the present invention produces, and material hardness HRC can reach more than 32-40, fully meets the requirement of wear resistant corrosion resistant in Desulfurization, and desulfur pump reaches more than two and half work-ing life.
Description
Technical field
The present invention relates to material, particularly relate to a kind of formula and working method of H-45 high-abrasive material.
Background technology
High-abrasive material is the core of field of new, plays important promotion and supporting role to the development of new and high technology, and in global new material research field, high-abrasive material accounts for 85%.Along with the arrival of information society, the development of special, wear-resistant material to new and high technology plays important promotion and supporting role, be 21st century information, biology, the energy, environmental protection, the high-tech sector such as space critical material, becoming the emphasis of countries in the world field of new researchdevelopment, is also the focus of Strategic Competition in the high technology development of countries in the world.Desulfurization medium due to desulfur pump conveying is the singularity of the operating modes such as severe corrosive and particle wash away, so existing desulfur pump is very short for work-ing life, general one year, can not meet industrial development needs.
Summary of the invention
Object of the present invention is exactly formula and the working method that will provide a kind of H-45 high-abrasive material, and it can overcome the deficiency that prior art exists.The object of the present invention is achieved like this, and a kind of formula of H-45 high-abrasive material and working method, is characterized in that: each element is filled a prescription by weight percentage and is: C≤0.07%, Cr26-28%, Ni5-6%, Mo1.5-2%, Cu1.5-2.5%, V0.1-0.15%, Re0.015%, all the other are Fe.
Its working method, weighs by formula, and melting step is as follows:
1), first technically pure iron and ferrochrome are added furnace bottom, energising fusing, treats that its temperature reaches more than 1350 DEG C, then adds molybdenum-iron, nickel plate, copper, vanadium;
2), treat that furnace charge all melts, temperature carries out slag making after reaching 1550 DEG C again, removes detrimental impurity;
3), treat that temperature rises to 1560-1600 DEG C, abundant deoxidation and carry out rare earth denaturing treatment;
4), teeming temperature controls at 1560-1600 DEG C, and according to the size feature of foundry goods, design different cast gates and rising head, the amount of carrying feeding is in time to obtain complete foundry goods.
Heat treatment step is as follows:
1), first rationally loaded in heat treatment furnace by its structure, wall thickness situation, then fasten heat-preservation furnace door by the foundry goods after cleaning, power supply heats up.
2), when temperature rises to 450-550 DEG C, insulation 0.5-1.5 hour, then when being warming up to 750-780 DEG C, insulation 1-3 hour, then be warming up to 1000-1050 DEG C, be incubated after 5-7 hour, come out of the stove air-cooled.
3), after foundry goods fully cools, again enter stove Heating temperature to 550-600 DEG C, be incubated come out of the stove after 5-7 hour air-cooled.
The material that the present invention produces not only corrosion resistant and abrasion resistance is fine, adopt special thermal treatment process, tensile strength reaches 778MPa, yield strength reaches 551MPa, unit elongation 58%, material hardness HRC can reach 32-40, fully meets the requirement of wear resistant corrosion resistant in Desulfurization, and desulfur pump reaches more than two and half work-ing life.
Embodiment
The formula of H-45 high-abrasive material and a working method, is characterized in that: each element is filled a prescription by weight percentage and is: C≤0.07%, Cr26-28%, Ni5-6%, Mo1.5-2%, Cu1.5-2.5%, V0.1-0.15%, Re0.015%, and all the other are Fe.
Because this material chrome content is higher, required to material selection adding of strict control harmful element.
Its working method, weighs by formula, and melting step is as follows:
1), first technically pure iron and ferrochrome are added furnace bottom, energising fusing, treats that its temperature reaches more than 1350 DEG C, then adds molybdenum-iron, nickel plate, copper, vanadium;
2), treat that furnace charge all melts, temperature carries out slag making after reaching 1550 DEG C again, removes detrimental impurity;
3), treat that temperature rises to 1560-1600 DEG C, abundant deoxidation and carry out rare earth denaturing treatment;
4), teeming temperature controls at 1560-1600 DEG C, and according to the size feature of foundry goods, design different cast gates and rising head, the amount of carrying feeding is in time to obtain complete foundry goods.
Heat treatment step is as follows:
1), first by foundry goods spruing, cleaning undesirable root, overlap, burr, the foundry goods after cleaning rationally loads in heat treatment furnace by its structure, wall thickness situation, then fastens heat-preservation furnace door, and power supply heats up.
2), when temperature rises to 450-550 DEG C, insulation 0.5-1.5 hour, then when being warming up to 750-780 DEG C, insulation 1-3 hour, then be warming up to 1000-1050 DEG C, be incubated after 5-7 hour, come out of the stove air-cooled.
3), after foundry goods fully cools, again enter stove Heating temperature to 550-600 DEG C, be incubated come out of the stove after 5-7 hour air-cooled.
Because material chrome content is high, the factor such as casting section thickness and structure, need control temperature even during thermal treatment especially, prevent the outstanding difference of Yin Wendu large and make foundry goods easily produce the defects such as cracking.
H-45 is two-phase alloys, and in its solid solution structure, Α ferritic phase and Χ austenite are makeed an appointment and respectively accounted for half.Through analysis of experiments it break up current potential, protection potential, indoor chemical immersion test-results all proves that it has excellent resistance to pitting attack performance; Also prove that it has excellent general corrosion resistance and the performance of crevice corrosion simultaneously by test.
test results and analysis
1. indoor chemical immersion test
The pitting attack chemical immersion test of H-45 two-phase alloys is with the mixing solutions of iron trichloride+hydrochloric acid for feature, and wherein the corrosive nature of chlorion directly affects test result.304L stainless steel material is as a comparison have employed in test.Specimen size is 50mm × 25mm × 3mm, tests in the solution of 6%FeCl3, under the condition of 35 DEG C ± 1 DEG C, has carried out the soak test of 18 days altogether.Test-results is in table 1.Therefrom known H-45 two-phase alloys has excellent resistance to pitting attack performance.
Table 1 chemical immersion test-results;
| Material | Average pitting penetration mm | Maximum pit depth mm | There is spot corrosion time h |
| H-45 | 0 | 0 | Spot corrosion is had no after 18 days |
| 304L | 1.27 | Penetrate | 5 |
Analyze:
It is consistent with the performance of other duplex stainless steels that H-45 two-phase alloys has excellent pitting resistance, and this is also the characteristic decision of duplex stainless steel.At present, stainless corrosion-resistant ability generally represents by spot corrosion index value (PRE), and PRE numerical value is larger, and resistance to pitting attack ability is stronger.
Table 2: the PRE value being several stainless material, shows that the resistance to pitting attack ability of H-45 two-phase alloys is much higher than other several stainless steels.In addition, from breaking up current potential (Eb) and protection potential (Ep) also can describe the problem, because breaking up current potential (Eb) is the potential value that metal starts to produce spot corrosion; And protection potential (Ep) is the current potential boundary that metal does not produce spot corrosion completely, that is can not there is spot corrosion lower than during protection potential in metal current potential, also can by passivation again even if there is point corrosion pit.The current potential that breaks up of H-45 two-phase alloys is+500mV, and protection potential is+308mV, and also higher than other stainless steel a lot, visible H-45 two-phase alloys has excellent resistance to pitting attack performance.
The spot corrosion index value of several stainless material of table 2;
(calculation formula: %Cr+3.3 × %Mo+16 × %N)
| Steel grade | H-45 | 304L | 316L |
| PRE | 35 | 25.9 | 30 |
2. general corrosion resistance performance
Test-results
Test sample is Φ 72mm annulus.The on-the-spot oil-reservoir water configuration of corrosive medium simulation oil field,
Composition is: Na
++ K
+50000mg/L; Mg
2+ 1100mg/L; Ca
2+ 6500mg/L; Cl
-97000mg/L; SO
4 2-900mg/L; HCO
3 -250mg/L; CO
3 2-0mg/L.
Table 3 corrosion simulation environment differing materials average corrosion rate;
| Material | 1Cr18Ni9Ti | 304L | H-45 |
| Average corrosion rate (mm/a) in liquid phase | 0.015 | 0.006 | 0.001 |
| Average corrosion rate (mm/a) in gas phase | 0.008 | 0.028 | 0.000 |
Analyze:
From table 3, in desulfurization slurry corrosive environment, even if the whole submergence of material in aqueous, the conventional stainless average corrosion rate of 1Cr18Ni9Ti, 304L is all very low, and H-45 two-phase alloys material surface brighting as before, average corrosion rate in liquid and gas is nearly all zero, so H-45 two-phase alloys has excellent general corrosion resistance performance.
3. slit and corrosion resistant performance
Test-results
Test basis GB T10127-2002 " stainless steel iron trichloride crevice corrosion test method " carries out, and testing liquid is 10%FeCl3 6H2O, and test temperature is 22 DEG C ± 1 DEG C, and test period is 72h, pH=1 ~ 1.5.Test-results lists in table 4.
Several stainless crevice corrosion zero-G test result of table 4;
| Steel grade | Weightless (g) |
| H-45 | 0.52 |
| 304L | 0.69 |
Analyze
As known from Table 4, H-45 two-phase alloys slit and corrosion resistant is stronger.
conclusion:
From above test and analysis, can draw to draw a conclusion: 1. H-45 two-phase alloys is compared with other stainless materials, there is more excellent resistance to pitting attack performance.2. H-45 two-phase alloys has the general corrosion resistance performance more excellent than other stainless materials in desulfurization corrosive environment.3. H-45 two-phase alloys is compared with other stainless materials, has more excellent slit and corrosion resistant performance.
4. special thermal treatment
H-45 adopts special thermal treatment process, material HRC can be made to reach 32-40, fully meet the working condition requirement of wear resistant corrosion resistant in Desulfurization.
5. mechanical characteristics:
Tensile strength, 778MPa;
Yield strength, 551MPa;
Unit elongation 58%.
Claims (2)
1. a formula for H-45 high-abrasive material, is characterized in that: each element is filled a prescription by weight percentage and is: C≤0.07%, Cr26-28%, Ni5-6%, Mo1.5-2%, Cu1.5-2.5%, V0.1-0.15%, Re0.015%, and all the other are Fe.
2. produce the working method of a kind of H-45 high-abrasive material of filling a prescription as claimed in claim 1, it is characterized in that: weigh by formula, melting, thermal treatment;
Wherein melting step is as follows:
1), first technically pure iron and ferrochrome are added furnace bottom, energising fusing, treats that its temperature reaches more than 1350 DEG C, then adds molybdenum-iron, nickel plate, copper, vanadium;
2), treat that furnace charge all melts, temperature carries out slag making after reaching 1550 DEG C again, removes detrimental impurity;
3), treat that temperature rises to 1560-1600 DEG C, abundant deoxidation and carry out rare earth denaturing treatment;
4), teeming temperature controls at 1560-1600 DEG C, and according to the size feature of foundry goods, design different cast gates and rising head, the amount of carrying feeding is in time to obtain complete foundry goods;
Heat treatment step is as follows:
1), first rationally loaded in heat treatment furnace by its structure, wall thickness situation, then fasten heat-preservation furnace door by the foundry goods after cleaning, power supply heats up;
2), when temperature rises to 450-550 DEG C, insulation 0.5-1.5 hour, then when being warming up to 750-780 DEG C, insulation 1-3 hour, then be warming up to 1000-1050 DEG C, be incubated after 5-7 hour, come out of the stove air-cooled;
3), after foundry goods fully cools, again enter stove Heating temperature to 550-600 DEG C, be incubated come out of the stove after 5-7 hour air-cooled.
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| CN201310645534.5A CN103643148B (en) | 2013-12-05 | 2013-12-05 | The formula of H-45 high-abrasive material and working method |
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| CN103643148B true CN103643148B (en) | 2015-12-02 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4561890A (en) * | 1982-02-23 | 1985-12-31 | Kubota Ltd. | Two-phase stainless cast steel having high corrosion fatigue strength |
| CN101812647A (en) * | 2009-02-25 | 2010-08-25 | 宝山钢铁股份有限公司 | Diphase stainless steel and manufacturing method thereof |
-
2013
- 2013-12-05 CN CN201310645534.5A patent/CN103643148B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4561890A (en) * | 1982-02-23 | 1985-12-31 | Kubota Ltd. | Two-phase stainless cast steel having high corrosion fatigue strength |
| CN101812647A (en) * | 2009-02-25 | 2010-08-25 | 宝山钢铁股份有限公司 | Diphase stainless steel and manufacturing method thereof |
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Effective date of registration: 20171212 Address after: No. 2, Xinqiao Industrial Park, Jingjiang City, Taizhou, Jiangsu Patentee after: Jiangsu Faer Machinery Manufacturing Co., Ltd. Address before: No. 2, Xinqiao Town Industrial Park, Jingjiang City, Taizhou, Jiangsu Patentee before: Chen Dengyun |
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