CN105618714A - Aluminizing and embedding casting process for aluminum-based material - Google Patents
Aluminizing and embedding casting process for aluminum-based material Download PDFInfo
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- CN105618714A CN105618714A CN201511007238.8A CN201511007238A CN105618714A CN 105618714 A CN105618714 A CN 105618714A CN 201511007238 A CN201511007238 A CN 201511007238A CN 105618714 A CN105618714 A CN 105618714A
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- 239000000463 material Substances 0.000 title claims abstract description 331
- 238000005266 casting Methods 0.000 title claims abstract description 71
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 48
- 238000005269 aluminizing Methods 0.000 title abstract 11
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000002585 base Substances 0.000 claims description 210
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 37
- 239000004411 aluminium Substances 0.000 claims description 35
- 238000001994 activation Methods 0.000 claims description 31
- 229910000838 Al alloy Inorganic materials 0.000 claims description 23
- 239000000243 solution Substances 0.000 claims description 16
- 238000005480 shot peening Methods 0.000 claims description 10
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 5
- 238000007670 refining Methods 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 239000003637 basic solution Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 230000004913 activation Effects 0.000 abstract description 7
- 230000008018 melting Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 239000012670 alkaline solution Substances 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910001018 Cast iron Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005474 detonation Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
- B22D19/0027—Cylinders, pistons pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
- B22D23/04—Casting by dipping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
An aluminizing and embedding process for an aluminum-based material comprises selection of an aluminizing material and surface activation treatment of the aluminum-based material, wherein the selection of the aluminizing material refers to selection of the aluminizing material according to the aluminum-based material, the surface activation treatment of the aluminum-based material refers to soaking of the aluminum-based material in an alkaline solution, then taking out, cleaning and drying, the selection of the aluminizing material and the surface activation treatment of the aluminum-based material further comprise aluminizing and embedding, the aluminizing and embedding refer to melting of the selected aluminizing material and then heat preservation, then heating of the aluminum-based material subjected to the surface activation treatment, then placing the aluminum-based material in a aluminizing material melt and vibrating the aluminum-based material up and down, then placing the taken aluminum-out aluminum-based material in a mold and pouring with the aluminizing material melt to form a casting, and after the casting is solidified, a metallurgical bonding surface is formed between the aluminum-based. The design is simple and convenient to operate, low in cost and easy to popularize and use, and the aluminum-based material and the aluminized material form a metallurgical bonding surface.
Description
Technical field
The present invention relates to non-ferrous metals casting field, particularly relate to the aluminising of a kind of alumina-base material and embedding casting process, be mainly applicable to cast from other aluminum alloy castinges by embedding for alumina-base material and form metallurgical binding face.
Background technology
All the time, aluminium alloy is all the preferred material manufacturing diesel motor piston, but along with the detonation pressure of heavy duty diesel engine improves constantly, namely piston uses the materials such as Mahle174+ or S2N+ that in aluminum alloy materials, best performance is different also cannot meet harsh working condition requirement. Aluminium recovery easily occurs that aditus laryngis ftractures under more than 18MPa detonation pressure operating mode, and this causes detonation pressure progressively to start to adopt all steel piston on the diesel motor of more than 20MPa. But, all steel Piston Machining complex process, manufacturing cost height, and heavier-weight, therefore, engineering technical personnel seek to work aluminium recovery the technology that detonation pressure promotes further always on novel material, novel process direction.
At present, main technological line is that piston aditus laryngis position is carried out local enhancement. Wherein comparatively proven technique has following two kinds: adopts Extrution casting technique that at piston head, sapphire whisker prefabricated section and aluminium alloy are formed the matrix material of high-temperature behavior excellence, thus improves the high temperature fatigue performance of aluminium recovery; Form one layer of refractory ceramics coating at the indoor employing process for treating surface of piston combustion, thus improve the high temperature fatigue performance of piston. But, these two kinds of casts, processing and detection be difficulty all quite, thus causes cost higher, is not suitable for big batch and applies.
Chinese patent application publication No. is CN103820752A, Shen Qing Publication day has been the disclosure of the invention on May 28th, 2014, and a kind of cast iron ring carrier piston activates alumetizing process and activating treatment equipment thereof, its technique comprises the activation treatment before alitizing, this activation treatment is the surface cleaning for cast iron ring carrier, after weakly alkaline activation treatment liquid soaks certain time, clear water rinses air-dry, then carries out hot aluminising 34 minutes under the temperature condition of 730 740 DEG C. Although this invention improves the interface bond strength of edge circle with piston matrix by alumetizing process, but still there is following defect in it: the fusing point of this invention medium cast iron edge circle will far away higher than the temperature condition of hot aluminising, when cast iron ring carrier is carried out hot aluminising, cast iron ring carrier can not be melted, but for alumina-base material, this alumetizing process can cause alumina-base material to melt, so that alumina-base material and aluminising material do not form metallurgical binding face.
Summary of the invention
It is an object of the invention to overcome in prior art defect and problem that the alumina-base material that exists and aluminising material do not form metallurgical binding face, it is provided that the aluminising of the alumina-base material in a kind of alumina-base material and aluminising material formation metallurgical binding face and embedding casting process.
For realizing above object, the technical solution of the present invention is: the aluminising of a kind of alumina-base material and embedding casting process, comprise choosing and alumina-base material surface activation process of aluminising material, the choosing of described aluminising material refers to chooses aluminising material according to alumina-base material, described alumina-base material surface activation process refers to that alumina-base material is placed in basic solution to be soaked, and then takes out cleaning, drying;
Described aluminising material choose with alumina-base material surface activation process after also comprise aluminising and embedding casting, described aluminising and embedding casting comprise the following steps successively: the aluminising material melts first will chosen, again molten for aluminising material liquid is incubated, then the alumina-base material of surface activation process is heated, alumina-base material is placed in the molten liquid of aluminising material again and by alumina-base material up-down vibration, then the alumina-base material of taking-up is placed in mould and carries out cast with the molten liquid of aluminising material and form foundry goods, metallurgical binding face is formed between alumina-base material and aluminising material after casting solidification, now, aluminising and embedding casting terminate.
In described aluminising and embedding casting, after aluminising material melts, more molten for aluminising material liquid is carried out refining, degasification and slagging-off, then molten for aluminising material liquid is incubated.
In described aluminising and embedding casting, the holding temperature of the molten liquid of aluminising material is higher than the fusing point of aluminising material 10 DEG C, and the Heating temperature of alumina-base material is lower than the fusing point of alumina-base material 100 DEG C.
In described aluminising and embedding casting, alumina-base material is placed in the molten liquid of aluminising material and alumina-base material up-down vibration is referred to: alumina-base material being placed in the molten liquid of aluminising material and makes alumina-base material do amplitude is 50 millimeters, frequency is the up and down reciprocatingly motion of 1 hertz, after 30 to 60 seconds, takes out alumina-base material.
In the choosing of described aluminising material, choosing aluminising material, the fusing point of aluminising material is lower than the fusing point of alumina-base material.
The fusing point of described aluminising material is lower than the fusing point of alumina-base material 10 DEG C.
In described alumina-base material surface activation process, first the surface of alumina-base material is carried out shot-peening, again alumina-base material is carried out ultrasonic cleaning, then alumina-base material is placed in sodium hydroxide solution soak, again alumina-base material is taken out and carry out cleaning, dry, preserve under then alumina-base material is placed in sealing environment.
In described alumina-base material surface activation process, it is first that the surface of alumina-base material is carried out shot-peening by the shot of 2 millimeters by diameter, so that the surfaceness of alumina-base material is more than or equal to 6 microns, again alumina-base material is carried out ultrasonic cleaning, then alumina-base material is placed in temperature is 80 DEG C, concentration be 20% sodium hydroxide solution in soak 5 to 10 minutes, to remove the alumina layer on alumina-base material surface.
After described alumina-base material takes out from sodium hydroxide solution, first with pure water, alumina-base material is cleaned, then alumina-base material is dried and it is placed in vacuum bag.
Described alumina-base material is 4032 wrought aluminium alloies, and aluminising material is Mahlel74 aluminium alloy.
Compared with prior art, the useful effect of the present invention is:
1, due in the aluminising of a kind of alumina-base material of the present invention and embedding casting process when aluminising and embedding casting, by being undertaken being incubated and being heated by alumina-base material by molten for the aluminising material after fusing liquid, control the temperature of aluminising, ensure that alumina-base material can not be melted, simultaneously, by alumina-base material is placed in the molten liquid of aluminising material and by alumina-base material up-down vibration, control the time of aluminising, not only ensure the abundant aluminising of alumina-base material, and ensureing that alumina-base material can not be melted, such design makes alumina-base material and aluminising material form metallurgical binding face. Therefore, the present invention is applicable to the aluminising of alumina-base material, makes alumina-base material and aluminising material form metallurgical binding face.
2, due in the aluminising of a kind of alumina-base material of the present invention and embedding casting process in aluminising and embedding casting, alumina-base material is embedding cast from other aluminum alloy castinges before increase by one alumetizing process, alumina-base material and other aluminum alloy castinges is made to form metallurgical binding face, ensure that alumina-base material does not deform under alternating hot and cold environment and comes off, such design is not only easy and simple to handle, and cost is low, it is easy to promote the use of. Therefore, the present invention is not only easy and simple to handle, and cost is low, is easy to promote the use of.
3, due in the aluminising of a kind of alumina-base material of the present invention and embedding casting process before aluminising and embedding casting, the surface of alumina-base material is carried out shot-peening, to improve the roughness on alumina-base material surface, in addition, alumina-base material is placed in sodium hydroxide solution and invades bubble, to remove the alumina layer on alumina-base material surface, such design improves alumina-base material and the wetting property of the molten liquid of aluminising material, and the embedding casting of alumina-base material is effective. Therefore, the embedding casting of alumina-base material of the present invention is effective.
Accompanying drawing explanation
Fig. 1 is 4032 wrought aluminium alloies in embodiments of the invention 4 and the schematic diagram in Mahlel74 aluminium alloy metallurgical binding face.
Embodiment
Illustrate below in conjunction with accompanying drawing and with embodiment, invention is described in further detail.
See Fig. 1, the aluminising of a kind of alumina-base material and embedding casting process, comprise choosing and alumina-base material surface activation process of aluminising material, the choosing of described aluminising material refers to chooses aluminising material according to alumina-base material, described alumina-base material surface activation process refers to that alumina-base material is placed in basic solution to be soaked, and then takes out cleaning, drying;
Described aluminising material choose with alumina-base material surface activation process after also comprise aluminising and embedding casting, described aluminising and embedding casting comprise the following steps successively: the aluminising material melts first will chosen, again molten for aluminising material liquid is incubated, then the alumina-base material of surface activation process is heated, alumina-base material is placed in the molten liquid of aluminising material again and by alumina-base material up-down vibration, then the alumina-base material of taking-up is placed in mould and carries out cast with the molten liquid of aluminising material and form foundry goods, metallurgical binding face is formed between alumina-base material and aluminising material after casting solidification, now, aluminising and embedding casting terminate.
In described aluminising and embedding casting, after aluminising material melts, more molten for aluminising material liquid is carried out refining, degasification and slagging-off, then molten for aluminising material liquid is incubated.
In described aluminising and embedding casting, the holding temperature of the molten liquid of aluminising material is higher than the fusing point of aluminising material 10 DEG C, and the Heating temperature of alumina-base material is lower than the fusing point of alumina-base material 100 DEG C.
In described aluminising and embedding casting, alumina-base material is placed in the molten liquid of aluminising material and alumina-base material up-down vibration is referred to: alumina-base material being placed in the molten liquid of aluminising material and makes alumina-base material do amplitude is 50 millimeters, frequency is the up and down reciprocatingly motion of 1 hertz, after 30 to 60 seconds, takes out alumina-base material.
In the choosing of described aluminising material, choosing aluminising material, the fusing point of aluminising material is lower than the fusing point of alumina-base material.
The fusing point of described aluminising material is lower than the fusing point of alumina-base material 10 DEG C.
In described alumina-base material surface activation process, first the surface of alumina-base material is carried out shot-peening, again alumina-base material is carried out ultrasonic cleaning, then alumina-base material is placed in sodium hydroxide solution soak, again alumina-base material is taken out and carry out cleaning, dry, preserve under then alumina-base material is placed in sealing environment.
In described alumina-base material surface activation process, it is first that the surface of alumina-base material is carried out shot-peening by the shot of 2 millimeters by diameter, so that the surfaceness of alumina-base material is more than or equal to 6 microns, again alumina-base material is carried out ultrasonic cleaning, then alumina-base material is placed in temperature is 80 DEG C, concentration be 20% sodium hydroxide solution in soak 5 to 10 minutes, to remove the alumina layer on alumina-base material surface.
After described alumina-base material takes out from sodium hydroxide solution, first with pure water, alumina-base material is cleaned, then alumina-base material is dried and it is placed in vacuum bag.
Described alumina-base material is 4032 wrought aluminium alloies, and aluminising material is Mahlel74 aluminium alloy.
The principle of the present invention is described as follows:
1, the aluminising of a kind of alumina-base material of the design and embedding casting process are developed for a kind of piston aditus laryngis local enhancement technology, and this piston aditus laryngis local enhancement technology is by improving aluminium recovery high-temperature behavior at the alumina-base material of a kind of high-temperature behavior excellence of the embedding casting in aluminium recovery aditus laryngis place. Casting type aditus laryngis strengthens aluminium recovery to adopt the piston of this technology manufacture to be called, this kind of piston only need to increase embedding casting process together in existing aluminium recovery production technique. Embedding casting process is the gordian technique manufacturing this kind of piston, if alumina-base material and aluminium recovery body do not form metallurgical binding face, then operationally alumina-base material pine is de-to cause piston.
Casting type aditus laryngis strengthens the alumina-base material of embedding foundry goods employing and the thermal expansivity of piston body aluminium alloy in aluminium recovery and there is difference, test shows, when alumina-base material and piston body do not form metallurgical binding, under simulation pistons work environment, there is comparatively serious distortion in embedding foundry goods, this kind of distortion amount can increase along with the increase of the coefficient of thermal expansion differences between bi-material.
Strengthen at trial-production casting type aditus laryngis in the process of aluminium recovery and find, when alumina-base material under room temperature is directly put into die casting piston, because bigger condensate depression cools when the piston alloy of cast can be made to run into alumina-base material fast, thus gap together with being formed between alumina-base material with piston body. By heating alumina-base material, reduce condensate depression, it is possible to reduce the size in gap, but still cannot make to form metallurgical binding between the two. When carrying out thermal shock fatigue test, can there is serious distortion and deviate from piston body in the aditus laryngis alumina-base material adopting the casting type aditus laryngis of this kind of manufacture technics to strengthen aluminium recovery. This is because can there is thermal expansion coefficient difference between two kinds of differing materials, this species diversity can form bigger stress under violent alternating hot and cold environment, thus causes the distortion of material. , it is possible to develop the alumetizing process of a kind of applicable alumina-base material, therefore make aluminium base aditus laryngis alumina-base material and piston form metallurgical binding, ensure that it does not deform under alternating hot and cold environment and comes off.
2, aluminising and embedding casting: the fusing point that the maximum difficult point that alumina-base material carries out aluminising is the fusing point of alumina-base material and aluminising material is close, therefore in aluminising process, the temperature of aluminising and the time of aluminising just seem particularly important, if controlling improper, then alumina-base material can be caused to melt. Meanwhile, relation between the fusing point of alumina-base material and the fusing point of aluminising material should meet the fusing point of fusing point higher than aluminising material of alumina-base material. Using JmatPro software, we can obtain its theoretical temperature of fusion by the chemical composition of aluminium alloy, and us can be helped like this to select suitable aluminising material according to alumina-base material, it is preferable that, the fusing point of aluminising material is lower than the fusing point of aluminium base part material 10 DEG C.
3, alumina-base material surface activation process: the surface of alumina-base material is generally turnery processing, its surfaceness is 0.8 ��m 1.2 ��m, and the surface of alumina-base material has one layer of fine and close aluminum oxide, these factors all can cause alumina-base material and the wetting property of the molten liquid of aluminising material, so alumina-base material was carried out surface activation process before carrying out aluminising.
Embodiment 1:
The aluminising of alumina-base material and an embedding casting process, comprise choosing and alumina-base material surface activation process of aluminising material, described aluminising material choose with alumina-base material surface activation process after also comprise aluminising and embedding casting;
The choosing of described aluminising material refers to chooses aluminising material according to alumina-base material, and the fusing point of aluminising material is lower than the fusing point of alumina-base material;
Described alumina-base material surface activation process comprises the following steps successively: first the surface of alumina-base material is carried out shot-peening, again alumina-base material is carried out ultrasonic cleaning, then alumina-base material is placed in sodium hydroxide solution soak, again alumina-base material is taken out and carry out cleaning, dry, then preserve under alumina-base material is placed in sealing environment, now, alumina-base material surface activation process terminates;
Described aluminising and embedding casting comprise the following steps successively: the aluminising material melts first will chosen, again molten for aluminising material liquid is incubated, then the alumina-base material of surface activation process is heated, alumina-base material is placed in the molten liquid of aluminising material again and by alumina-base material up-down vibration, then the alumina-base material of taking-up is placed in mould and carries out cast with the molten liquid of aluminising material and form foundry goods, forming metallurgical binding face after casting solidification between alumina-base material and aluminising material, now, aluminising and embedding casting terminate.
Embodiment 2:
Basic content is with embodiment 1, and difference is:
In described aluminising and embedding casting, after aluminising material melts, more molten for aluminising material liquid is carried out refining, degasification and slagging-off, then molten for aluminising material liquid is incubated;
In described aluminising and embedding casting, the holding temperature of the molten liquid of aluminising material is higher than the fusing point of aluminising material 10 DEG C, and the Heating temperature of alumina-base material is lower than the fusing point of alumina-base material 100 DEG C;
In described aluminising and embedding casting, alumina-base material is placed in the molten liquid of aluminising material and alumina-base material up-down vibration is referred to: alumina-base material being placed in the molten liquid of aluminising material and makes alumina-base material do amplitude is 50 millimeters, frequency is the up and down reciprocatingly motion of 1 hertz, after 30 to 60 seconds, takes out alumina-base material.
Embodiment 3:
Basic content is with embodiment 1, and difference is:
The fusing point of described aluminising material is lower than the fusing point of alumina-base material 10 DEG C;
In described alumina-base material surface activation process, it is first that the surface of alumina-base material is carried out shot-peening by the shot of 2 millimeters by diameter, so that the surfaceness of alumina-base material is more than or equal to 6 microns, again alumina-base material is carried out ultrasonic cleaning, then alumina-base material is placed in temperature is 80 DEG C, concentration be 20% sodium hydroxide solution in soak 5 to 10 minutes, to remove the alumina layer on alumina-base material surface, again alumina-base material is taken out from sodium hydroxide solution and with pure water, alumina-base material is cleaned, then alumina-base material is dried and be placed in vacuum bag.
Embodiment 4: alumina-base material is 4032 wrought aluminium alloies, aluminising material is Mahlel74 aluminium alloy.
Basic content is with embodiment 1, and difference is:
��
The fusing point of described 4032 wrought aluminium alloies is 570 DEG C, the fusing point of Mahlel74 aluminium alloy is 560 DEG C (using JmatPro software, do not calculate Mahlel74 aluminium alloy and the fusing point of 4032 wrought aluminium alloies by the chemical composition of the aluminium alloy of Mahlel74 shown in table 1 and 4032 wrought aluminium alloies);
In described alumina-base material surface activation process, it is first that the surface of 4032 wrought aluminium alloies is carried out shot-peening by the shot of 2 millimeters by diameter, so that the surfaceness of 4032 wrought aluminium alloies is more than or equal to 6 microns, again 4032 wrought aluminium alloies are carried out ultrasonic cleaning, then 4032 wrought aluminium alloies being placed in temperature is 80 DEG C, concentration be 20% sodium hydroxide solution in soak 8 minutes, to remove the alumina layer on 4032 wrought aluminium alloy surfaces, again 4032 wrought aluminium alloies are taken out from sodium hydroxide solution and with pure water, 4032 wrought aluminium alloies are cleaned, then 4032 wrought aluminium alloies are dried and it is placed in vacuum bag,
In described aluminising and embedding casting, the Mahlel74 aluminum alloy melting first will chosen, again Mahlel74 molten aluminium alloy is carried out refining, it is incubated after degasification and slagging-off, now, the holding temperature of Mahlel74 molten aluminium alloy is 570 DEG C, then 4032 wrought aluminium alloies of surface activation process are heated, now, the Heating temperature of 4032 wrought aluminium alloies is 470 DEG C, again 4032 wrought aluminium alloies being placed in Mahlel74 molten aluminium alloy and making 4032 wrought aluminium alloies do amplitude is 50 millimeters, frequency is the up and down reciprocatingly motion of 1 hertz, after 30 seconds, take out 4032 wrought aluminium alloies, then 4032 wrought aluminium alloies taken out are placed in mould and carry out cast with Mahlel74 molten aluminium alloy and form foundry goods, metallurgical binding face (see Fig. 1) is formed between 4032 wrought aluminium alloies and Mahlel74 aluminium alloy after casting solidification.
Claims (10)
1. the aluminising of an alumina-base material and embedding casting process, comprise choosing and alumina-base material surface activation process of aluminising material, the choosing of described aluminising material refers to chooses aluminising material according to alumina-base material, described alumina-base material surface activation process refers to that alumina-base material is placed in basic solution to be soaked, then cleaning, drying is taken out, it is characterised in that:
Described aluminising material choose with alumina-base material surface activation process after also comprise aluminising and embedding casting, described aluminising and embedding casting comprise the following steps successively: the aluminising material melts first will chosen, again molten for aluminising material liquid is incubated, then the alumina-base material of surface activation process is heated, alumina-base material is placed in the molten liquid of aluminising material again and by alumina-base material up-down vibration, then the alumina-base material of taking-up is placed in mould and carries out cast with the molten liquid of aluminising material and form foundry goods, metallurgical binding face is formed between alumina-base material and aluminising material after casting solidification, now, aluminising and embedding casting terminate.
2. the aluminising of a kind of alumina-base material according to claim 1 and embedding casting process, it is characterised in that: in described aluminising and embedding casting, after aluminising material melts, more molten for aluminising material liquid is carried out refining, degasification and slagging-off, then molten for aluminising material liquid is incubated.
3. the aluminising of a kind of alumina-base material according to claim 1 and 2 and embedding casting process, it is characterized in that: in described aluminising and embedding casting, the holding temperature of the molten liquid of aluminising material is higher than the fusing point of aluminising material 10 DEG C, and the Heating temperature of alumina-base material is lower than the fusing point of alumina-base material 100 DEG C.
4. the aluminising of a kind of alumina-base material according to claim 3 and embedding casting process, it is characterized in that: in described aluminising and embedding casting, alumina-base material is placed in the molten liquid of aluminising material and alumina-base material up-down vibration is referred to: alumina-base material being placed in the molten liquid of aluminising material and makes alumina-base material do amplitude is 50 millimeters, frequency is the up and down reciprocatingly motion of 1 hertz, after 30 to 60 seconds, take out alumina-base material.
5. the aluminising of a kind of alumina-base material according to claim 4 and embedding casting process, it is characterised in that: in the choosing of described aluminising material, choosing aluminising material, the fusing point of aluminising material is lower than the fusing point of alumina-base material.
6. the aluminising of a kind of alumina-base material according to claim 5 and embedding casting process, it is characterised in that: the fusing point of described aluminising material is lower than the fusing point of alumina-base material 10 DEG C.
7. the aluminising of a kind of alumina-base material according to claim 5 and embedding casting process, it is characterized in that: in described alumina-base material surface activation process, first the surface of alumina-base material is carried out shot-peening, again alumina-base material is carried out ultrasonic cleaning, then alumina-base material is placed in sodium hydroxide solution soak, again alumina-base material is taken out and carry out cleaning, dry, preserve under then alumina-base material is placed in sealing environment.
8. the aluminising of a kind of alumina-base material according to claim 7 and embedding casting process, it is characterized in that: in described alumina-base material surface activation process, it is first that the surface of alumina-base material is carried out shot-peening by the shot of 2 millimeters by diameter, so that the surfaceness of alumina-base material is more than or equal to 6 microns, again alumina-base material is carried out ultrasonic cleaning, then alumina-base material is placed in temperature is 80 DEG C, concentration be 20% sodium hydroxide solution in soak 5 to 10 minutes, to remove the alumina layer on alumina-base material surface.
9. the aluminising of a kind of alumina-base material according to claim 7 and embedding casting process, it is characterised in that: after described alumina-base material takes out from sodium hydroxide solution, first with pure water, alumina-base material is cleaned, then alumina-base material is dried and it is placed in vacuum bag.
10. the aluminising of a kind of alumina-base material according to claim 8 or claim 9 and embedding casting process, it is characterised in that: described alumina-base material is 4032 wrought aluminium alloies, and aluminising material is Mahlel74 aluminium alloy.
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