CN107312962A - A kind of bimetallic alloy machine barrel material and its production technology - Google Patents
A kind of bimetallic alloy machine barrel material and its production technology Download PDFInfo
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- CN107312962A CN107312962A CN201710511872.8A CN201710511872A CN107312962A CN 107312962 A CN107312962 A CN 107312962A CN 201710511872 A CN201710511872 A CN 201710511872A CN 107312962 A CN107312962 A CN 107312962A
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- Prior art keywords
- machine barrel
- powder
- alloy
- base substrate
- alloy machine
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- 239000000956 alloy Substances 0.000 title claims abstract description 103
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 100
- 239000000463 material Substances 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000005516 engineering process Methods 0.000 title claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 59
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 40
- 239000011572 manganese Substances 0.000 claims abstract description 34
- 239000011651 chromium Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 30
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims abstract description 27
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 238000000498 ball milling Methods 0.000 claims abstract description 19
- 229910003470 tongbaite Inorganic materials 0.000 claims abstract description 18
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052796 boron Inorganic materials 0.000 claims abstract description 17
- 238000007493 shaping process Methods 0.000 claims abstract description 17
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 16
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 16
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 14
- 239000011733 molybdenum Substances 0.000 claims abstract description 14
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000005238 degreasing Methods 0.000 claims abstract description 11
- 239000011265 semifinished product Substances 0.000 claims abstract description 9
- 238000003754 machining Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 32
- 238000005245 sintering Methods 0.000 claims description 25
- 238000010438 heat treatment Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 238000010348 incorporation Methods 0.000 claims description 3
- 238000010298 pulverizing process Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 238000004781 supercooling Methods 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 18
- 239000010959 steel Substances 0.000 abstract description 18
- 238000005260 corrosion Methods 0.000 abstract description 16
- 230000007797 corrosion Effects 0.000 abstract description 16
- 239000011159 matrix material Substances 0.000 abstract description 14
- 239000004033 plastic Substances 0.000 abstract description 7
- 229920003023 plastic Polymers 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000010061 rubber shaping Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 238000005266 casting Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 244000309464 bull Species 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- BQJTUDIVKSVBDU-UHFFFAOYSA-L copper;sulfuric acid;sulfate Chemical compound [Cu+2].OS(O)(=O)=O.[O-]S([O-])(=O)=O BQJTUDIVKSVBDU-UHFFFAOYSA-L 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 208000020442 loss of weight Diseases 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 208000016261 weight loss Diseases 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 239000004412 Bulk moulding compound Substances 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/14—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on borides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/03—Press-moulding apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/68—Barrels or cylinders
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/051—Making hard metals based on borides, carbides, nitrides, oxides or silicides; Preparation of the powder mixture used as the starting material therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of bimetallic alloy machine barrel material, the mass fraction of its material powder is than proportioning:Molybdenum Mo:25~50%, boron:2~10%, chromium Cr:5~15%, nickel:2~10%, manganese Mn:1~5%, carbon C:0.1~1%, chromium carbide:0.8~3%, iron Fe:Surplus, its production technology is:1) ball milling starting powder, 2) mix dry powders, 3) powder compacts, 4) base substrate machining and shaping, 5) it is vacuum degreasing sintered, 6) shaping processing semi-finished product, 7) processing of base substrate hot jacket, 8) endoporus working process, the bimetallic alloy machine barrel hardness that the present invention is made using previous materials is moderate, and high-temperature behavior is excellent, and bending strength is good, density and steel matrix are close, fracture toughness is high, excellent in abrasion resistance, fine corrosion resistance, cause plastic rubber shaping more stable using foregoing production technology, substantially increase the service life of alloy machine barrel.
Description
Technical field
The present invention relates to injection extrusion, grit maker cylinder production technical field, refer in particular to a kind of with ternary boride-based metal
(Mo2FeB2) the bimetallic alloy machine barrel material and its production technology of ceramic component.
Background technology
In existing plastic rubber shaping extruder barrel production field, on the premise of more and more higher is required to plastic cement combination property,
In the case where special type injection extrusion is popularized all the more, injection extrusion molding is in machine barrel plasticizing process, engineering plastic, powder metallurgy
The heavy wear corrosion fields such as injection, ceramic injection forming, magnet iron powder, bakelite, BMC, violent abrasion is caused to machine barrel
And violent corrosion, such as magnetic iron powder 90% plus fibre 65%, PPS+65% add plastic cement under the conditions of fibre, high-environmental, high fire-retardance into
Type, the service life of machine barrel often only has the production stable period of 2-6 months, and substantial amounts of plastic material and resource wave are caused to this
Take, seriously constrain the normal operation of production shaping enterprise;Because the missing of super abrasive resistant material, the country is caused at this
The current still blank in field.
For external, the processing step that early stage machine barrel makes is usually to use 38CrMoAl (SACM645) quenched sizing
Post-processing is simultaneously made after the nitrogen treatment of 72 hours, and the surface tool nitration case of such machine barrel only has 0.3~0.7mm, wearability
Difference, it is impossible to tackle high glass fibre, ore deposit fiber, carbon fiber, high fire-retardance, high abrasive wear occasion, only 1~2 month left side now
Right production stable period, it just can not produce shaping.Later with the maturation and self-fluxing alloy materials application of spun casting technique
The visual field of popularization people so that nitridation machine barrel gradually fades out, ferrous alloy therein, nickel-base alloy, the big alloy material of cobalt-base alloy three
The spun casting of material is the most extensive.
The technology profile is:Powder is added in pre-processed hole, cylinder is heated to the temperature of self-fluxing alloy thawing
Degree, then the larger centrifugal force of rotation generation at a high speed is carried out, so that an alloy-layer is obtained, by following process finished product.It is external
Generally the machine barrel base for adding powder is vacuumized and sealing of hole in advance with electric furnace or intermediate-frequency heating furnace, under vacuum conditions alloy
Relatively low oxidation is obtained, additionally by addition a certain amount cladded type tungsten-carbide powder, preferable bimetallic alloy is also obtained
The material product of machine barrel.Domestic bimetallic because of the difference on casting powder quality, heating furnace and heating in medium frequency temperature control it is accurate
Sex differernce so that alloy-layer produces dilution diffusion and produces etching effect with ground so that the alloy of casting out does not reach originally
The wearability and corrosion resistance of alloy design.Tungsten carbide is added after alloy thawing, because of proportion (tungsten carbide ratio much larger compared with alloy
Weight is more than 13) it can be produced in high speed rotating centrifugal casting cycle and sink to the bottom effect, therefore alloy-layer will often process to obtain very thin
Carbide alloy layer can be obtained, it is wear-resisting to increase its.But become because of the thinning of alloy layer thickness and with the addition fragility of tungsten carbide
Big problem to have a greatly reduced quality in use.Therefore home and abroad alloy machine barrel present situation can not solve alloy machine barrel very well simultaneously
High tenacity, high-wearing feature, highly corrosion resistant, the machine barrel produced can all have all kinds of problems to occur.
Although domestic three big alloy materials obtain the alloy of corresponding hardness in casting cycle, most of is not with hard
Hardness formed by mutually supporting, but formed by crisp phase.With as formed by real whole hard phases generations alloy wear-resisting
Property aspect have very big difference.
The content of the invention
A kind of alloy machine cylinder material is provided it is an object of the invention to overcome weak point of the prior art, the material
Hardness is moderate, and high-temperature behavior is excellent, and bending strength is good, and density and steel matrix are close, and fracture toughness is high, excellent in abrasion resistance, corrosion resistant
Function admirable is lost, and further provides a kind of production technology that alloy machine barrel is made of foregoing alloy machine cylinder material, is passed through
The production technology causes plastic rubber shaping more stable, substantially increases the service life of alloy machine barrel, injection is extruded bimetallic
Qualitative leap is generated in terms of the wearability corrosion resistance and heat-resisting quantity of alloy machine barrel.
A kind of bimetallic alloy machine barrel material, the alloy machine cylinder material is by the mass fraction of following material powder than proportioning
Form:
Molybdenum Mo:25~50%, boron:2~10%, chromium Cr:5~15%, nickel:2~10%, manganese Mn:1~5%, carbon C:
0.1~1%, chromium carbide:0.8~3%, iron Fe:Surplus;
Wherein, boron is added with the alloy form of FeB.
The powder degree of each material powder is as follows:
Molybdenum Mo:1~8 μm, boron:1~15 μm, chromium Cr:1~20 μm, nickel:2~10 μm;Manganese Mn:1~15 μm, iron Fe:2
~10 μm, carbon C:2~10 μm, chromium carbide Cr3C2:1~10 μm.
The purity of each material powder is as follows:
Molybdenum Mo:More than 99.8%, boron:More than 99.7%, chromium Cr:More than 99.8%, nickel:More than 99.5%, manganese Mn:
More than 99.5%, iron Fe:More than 99.5%, chromium carbide Cr3C2:More than 99%, carbon C:More than 99.7%.
A kind of above-mentioned bimetallic alloy machine barrel material makes the production technology of alloy machine barrel, and the production craft step is as follows:
1) ball milling starting powder:Starting powder is taken by with weight/power ratio, and thicker powder is subjected to ball milling in advance, liquid is obtained
State mixture;
2) mix dry powders:The starting powders that do not add of others are added into steps 1) liquid mixture in, and match somebody with somebody
After more well mixed than a certain amount of liquid medium and hard spheres medium, carry out the separation of ball liquid and be dried in vacuo, obtain block powder
Body, then block powder is subjected to pulverization process, obtain mix powder;
3) powder compacts:By step 2) mix powder be fitted into pre-designed base substrate mould, through supercooling
Isostatic pressing process, molding or machine pressure, are made blank body;
4) base substrate machining and shaping:By step 3) blank body pass through machine tooling shaping, be made blank material;
5) it is vacuum degreasing sintered:By step 4) blank material be put into sintering furnace and be sintered, alloy base substrate is made
Semi-finished product;
6) shaping processing semi-finished product:To step 5) semi-finished product and carry out mechanical shaping and processing, alloy machine barrel base is made
Body;
7) base substrate hot jacket is handled:Take basal body pipe and be heated at high temperature, then by the alloy machine barrel base substrate of the precalculated magnitude of interference
It is bumped into aforementioned substrates pipe, after both cool down, obtains bimetallic alloy machine barrel base substrate;
8) endoporus working process:To step 7) bimetallic alloy machine barrel base substrate carry out inner hole precision processing, double gold are made
Belong to alloy machine barrel.
Further, the step 1) ball milling when be situated between using acetone or absolute ethyl alcohol and special hard ball as ball milling
Matter, its Ball-milling Time is 24~72 hours, and the liquid mixture that ball milling is obtained is the mixture of average 2~5 μm of grain size numbers.
Further, the step 2) liquid medium to be adopted as absolute ethyl alcohol or acetone and purity be more than 95%,
Hard spheres are a diameter of 8~Φ of Φ 15 sintered carbide ball, and ratio of the spheroid when mixing broken is about 2~4:1~2, spheroid
Ratio in mixing is about 1~2:2~4, wherein, the feed molar ratio of liquid medium is solid-liquid volume ratio 3~5, incorporation time
Usually 24~72 hours, the ball mill grinding best results obtained by above ratio were 2~5 μm.
Further, in the step 3) during, need to be in base substrate die surface uniform pressurization, compressive load per unit area is not
Less than 100Mpa~300Mpa.
Further, the step 4) in blank material linearity be≤1000/0.2~0.5 μm, the circularity of blank material
For≤0.2~0.5 μm, the blank material after shaping reduces the generation of deformation during follow-up sintering, is that final machine adds
Work reduces processing capacity, improves the processing benefit of alloy base substrate.
Further, the step 5) using protective atmosphere sintering or HIP sintering, its end vacuum be 1.0 ×
More than 10-4pa.
Further, the step 5) sintering process be divided into the following three stage:
First stage:0~550 DEG C of heating, heating and soaking time are or so 5~6 hours, and during which auxiliary is filled with certain
The protective gas of flow carries out degreasing, and the gas is argon gas, nitrogen or hydrogen, wherein, pressure is 0.2~0.8mpa, flow
For 10-40L/min;
2. second stage:Within 550 DEG C~1100 DEG C of heating, heating and soaking time 5~7 hours;
3. phase III:Within 1100 DEG C~1380 DEG C of heating, heating and soaking time are 3~5 hours, after the completion of sintering
Furnace cooling, completes sintering.
The step 6) alloy machine barrel base substrate roundness of external circle within 0.005~0.01 μm, alloy machine barrel base substrate
Linearity is within≤1000/0.02.
The step 7) basal body pipe heating-up temperature be 600 DEG C~1000 DEG C, its cooling treatment is empty at normal temperatures and pressures
Natural cooling or fan coolling in gas.
The step 8) the circularity of bimetallic alloy machine barrel endoporus be 0.005~0.01 μm, in bimetallic alloy machine barrel
The linearity in hole is≤1000/0.01, and the surface smoothness of the bimetallic alloy machine barrel endoporus is >=0.4~0.8.
The beneficial effects of the present invention are:
1. the bimetallic alloy machine barrel hardness made using previous materials is moderate, high-temperature behavior is excellent, and bending strength is good, close
Degree and steel matrix are approached, and fracture toughness is high, excellent in abrasion resistance, fine corrosion resistance.
2. causing plastic rubber shaping more stable using foregoing production technology, the service life of alloy machine barrel is substantially increased,
Injection is set to generate qualitative leap in terms of extruding the wearability corrosion resistance and heat-resisting quantity of bimetallic alloy machine barrel.
Brief description of the drawings
Fig. 1 is the process chart of the present invention.
Fig. 2 is the structural representation of mould needed for present invention process.
Fig. 3 is the metallographic structure figure before material corrosion of the present invention.
Fig. 4 is the metallographic structure figure after material corrosion of the present invention.
Embodiment
Below in conjunction with Figure of description, the invention will be further described:
As Figure 1-4, the present invention is on a kind of bimetallic alloy machine barrel material, and the alloy machine cylinder material presses following original
The mass fraction at feed powder end is formed than proportioning:
Molybdenum Mo:25~50%, boron:2~10%, chromium Cr:5~15%, nickel:2~10%, manganese Mn:1~5%, carbon C:
0.1~1%, chromium carbide:0.8~3%, iron Fe:Surplus;
Wherein, boron is added with the alloy form of FeB, preferably FeB FeB etc..
The powder degree of each material powder is as follows:
Molybdenum Mo:1~8 μm, boron:1~15 μm, chromium Cr:1~20 μm, nickel:2~10 μm;Manganese Mn:1~15 μm, iron Fe:2
~10 μm, carbon C:2~10 μm, chromium carbide Cr3C2:1~10 μm.
The purity of each material powder is as follows:
Molybdenum Mo:More than 99.8%, boron:More than 99.7%, chromium Cr:More than 99.8%, nickel:More than 99.5%, manganese Mn:
More than 99.5%, iron Fe:More than 99.5%, chromium carbide Cr3C2:More than 99%, carbon C:More than 99.7%.
According to the configuration requirement of above-mentioned bimetallic alloy machine barrel material, such as table 1 below is made:
Table 1
Further, the present invention also discloses the production work that alloy machine barrel is made in a kind of above-mentioned bimetallic alloy machine barrel material
Skill, the production craft step is as follows:
1) ball milling starting powder:Starting powder is taken by with weight/power ratio, and thicker powder is subjected to ball milling in advance, liquid is obtained
State mixture;
2) mix dry powders:The starting powders that do not add of others are added into steps 1) liquid mixture in, and match somebody with somebody
After more well mixed than a certain amount of liquid medium and hard spheres medium, carry out the separation of ball liquid and be dried in vacuo, obtain block powder
Body, then block powder is subjected to pulverization process, obtain mix powder;
3) powder compacts:By step 2) mix powder be fitted into pre-designed base substrate mould, the mould
Such as Fig. 2 (wherein, 1- rubber tubes;2nd, 3- rubber chock plug;4- powder;5- steel matrix core bar) shown in, by isostatic cool pressing technique, mould
Pressure or machine pressure, are made blank body;
4) base substrate machining and shaping:By step 3) blank body pass through machine tooling shaping, be made blank material;
5) it is vacuum degreasing sintered:By step 4) blank material be put into sintering furnace and be sintered, alloy base substrate is made
Semi-finished product;
6) shaping processing semi-finished product:To step 5) semi-finished product and carry out mechanical shaping and processing, alloy machine barrel base is made
Body;
7) base substrate hot jacket is handled:Take basal body pipe and be heated at high temperature, then by the alloy machine barrel base substrate of the precalculated magnitude of interference
It is bumped into aforementioned substrates pipe, after both cool down, obtains bimetallic alloy machine barrel base substrate;
8) endoporus working process:To step 7) bimetallic alloy machine barrel base substrate carry out inner hole precision processing, double gold are made
Belong to alloy machine barrel.
Further, the step 1) ball milling when be situated between using acetone or absolute ethyl alcohol and special hard ball as ball milling
Matter, its Ball-milling Time is 24~72 hours, and the liquid mixture that ball milling is obtained is the mixture of average 2~5 μm of grain size numbers, this
Liquid mixture and step 2) grain size number that adds powder approaches, and is final to obtain the average grain matter that comprehensive grain size number is 1~3 μm
Number original material powder provide guarantee.Tested through actual verification, the original particle size of powder controls what is obtained between 1-3 μm
Texture, particularly wear-resisting phase is between 1~3 μm, as shown in Figure 3,4.
Further, step 2) liquid medium to be adopted as absolute ethyl alcohol or acetone and purity be more than 95%, hard
Spheroid is a diameter of 8~Φ of Φ 15 sintered carbide ball, and ratio of the spheroid when mixing broken is about 2~4:1~2, spheroid is mixed
Ratio during conjunction is about 1~2:2~4, wherein, the feed molar ratio of liquid medium is solid-liquid volume ratio 3~5, and incorporation time is usual
For 24~72 hours, the ball mill grinding best results obtained by above ratio were 2~5 μm.
The powder of this grain size number easily produces the reaction mutually soaked and spread after compacting blank in sintering process, from
And the higher material of ductile strength is obtained, while because of wear-resisting mutually comparatively fine (1~3 μm), therefore its anti-wear performance is equally being formulated
In powder.Tiny wear-resisting phase can obtain best anti-wear performance, and match a certain amount of liquid medium and spheroid medium, press
The ball mill grinding best results that above ratio is obtained are 2~5 μm, and mixed effect can most preferably obtain well mixed suspension
Mixing liquid.Mixing liquid pass through vacuum equipment for separating liquid from solid, carried out under conditions of with vacuum (1~200pa) compared with
It is that quick ball liquid and separation of solid and liquid (carrying out simultaneously) can be controlled within 10-30 minutes, maximum limit with air contact time
The oxidation and the change of performance of the reduction material of degree, because the device is designed, designed product, therefore only illustrate its performance, do not do structure
Explanation.(vacuum be 0.1pa~100pa), this equipment are placed into special customized vacuum drying chamber after the completion of separation of solid and liquid
Special construction explanation is not made herein for special customized and transformation of the way product.It is continuous dry between drying temperature is set as 25 DEG C~75 DEG C
The dry time is 12~36h, dries and dried powder solid (blob-like shapes) is obtained after cooling, be by crushing by blocks of solid finally
Grain size number is 20~500 μm of mixed-powder, and it is to be carried to increase the mobility of dress powder for next process to choose this grain size number
For facility.Disintegrating apparatus is inter-trade selection part herein, does not make structure explanation.
Further, in the step 3) during, need to be in base substrate die surface uniform pressurization, compressive load per unit area is not
Less than 100Mpa~300Mpa, comparatively dense alloy machine barrel base substrate can be obtained in this pressure limit, is that following process is closed
Golden machine barrel base substrate provides intensity and ensured, and shortens the time for follow-up sintering process densification, accelerate Binder Phase with it is resistance to
Grind the fast offset reaction of phase.
Further, step 4) in the linearity of blank material be≤1000/0.2~0.5 μm, the circularity of blank material for≤
0.2~0.5 μm.
Further, step 5) using protective atmosphere sintering or HIP sintering, its end vacuum is 1.0 × 10-
More than 4pa.
Further, step 5) sintering process be divided into the following three stage:
First stage:0~550 DEG C of heating, heating and soaking time are or so 5~6 hours, and during which auxiliary is filled with certain
The protective gas of flow carries out degreasing, and the gas is argon gas, nitrogen or hydrogen, wherein, pressure is 0.2~0.8mpa, flow
For 10-40L/min, degreasing is carried out with the pressure and flow insufflation gas, in the material skimming processes, can be obtained optimal
Degreasing effect and optimal material protection (not oxidized), certain degreasing gas are preferably hydrogen or argon gas, are finally
Nitrogen.The reason for preferential hydrogen is the process effect that can have a reduction to partial oxidation material in skimming processes, is carried significantly
The quality parameter of subsequent material is risen;
Second stage:Within 550 DEG C~1100 DEG C of heating, heating and soaking time 5~7 hours;
Phase III:Heating 1100 DEG C~1380 DEG C within, heating and soaking time be 3~5 hours, after the completion of sintering with
Stove is cooled down, and completes sintering.
Further, step 6) alloy machine barrel base substrate the cylindrical grinding through car after the circularity that is obtained exist
Within 0.005~0.01 μm, the linearity of alloy machine barrel base substrate is within≤1000/0.02, and linearity and roundness control are herein
Within the scope of, guarantee can be provided for subsequent thermal set process.
Further, step 7) basal body pipe heating-up temperature be 600 DEG C~1000 DEG C, its cooling treatment be in normal temperature and pressure
Natural cooling or fan coolling in lower air, the special steel as matrix material because have chosen, so the process will not be to steel matrix
Hardness and grain size cause significant impact (steel matrix be technical protocol product with Special Steel Works co-production, name
The trade mark is JY26).
Yet further, step 8) bimetallic alloy machine barrel endoporus circularity be 0.005~0.01 μm, bimetallic alloy
The linearity of machine barrel endoporus is≤1000/0.01, and the surface smoothness of the bimetallic alloy machine barrel endoporus is >=0.4~0.8, should
Precision fully meets the use production requirement of bimetallic alloy machine barrel.
Below in conjunction with reality, table 1 is further explained:
First, in alloy machine cylinder material composition molybdenum Mo, boron (being added in the form of FeB), chromium Cr, iron Fe elements
Add, be the basic element to form ceramic hard phase, hardness property of alloy machine cylinder material is mainly by ceramic hard phase in this
Generation number determine, experiment proves:When it is 2% that the content for adding molybdenum Mo, which is 25%, boron content, resulting materials
Hardness is minimum, i.e., it is at least less than 40% that ceramic hard, which mutually generates content, is contained when adding molybdenum Mo content for more than 50%, boron
Measure for 40% when, it is more than 80% that the ceramic hards of resulting materials, which mutually generates content, and hardness highest, material property is too crisp, without straight
Performance is connect, therefore the content of molybdenum Mo, boron should be controlled within above range;Wherein, the addition of iron Fe elements, mainly with iron
The structure of base Binder Phase is present in material system, and the chromium nickel stainless steel superior with other Cr, Ni elements formation combination property
Iron-based Binder Phase, but it is not involved in the generation of ceramic hard phase.
Secondly, chromium Cr, nickel in composition, the addition of carbon C element make material have preferable hardness and intensity, and right
Iron-based Binder Phase plays significant alloy strengthening effect, improves the hardness of Binder Phase, the intensity of the material further improved.
It is demonstrated experimentally that when the content that the content that chromium Cr content is 5%, nickel is 2.5%, carbon C is 0.1%, the reinforcing risen is made
With unobvious;When the content that the content that chromium Cr content is 15%, nickel is 10%, carbon C is 1%, then occur in that obvious
Fragility is inclined to, therefore the control of chromium Cr, nickel, carbon C content is within above range.The addition of last chromium carbide (Cr3C2) is herein
Play a part of substantially suppressing crystal grain in material sintering process growing up, by crystal grain control within certain limit addition be less than
The suppression crystal grain served when 0.8% is not obvious, and obvious hardness increase tendency can be produced when addition crosses 3%.
Special instruction, is observed by experiment test:The addition of manganese Mn elements in material, hence it is evident that change material
Microscopic structure, particularly ceramic hard phase crystal grain increase, it is seen then that the addition of manganese Mn elements, improve material intensity and
Hardness, the effect with the increase strength of materials and hardness;It is demonstrated experimentally that when manganese Mn contents are less than 1%, material can not obtain machine
The abundant improvement of tool performance;When manganese Mn contents are more than 7%, the roughening of ceramic hard phase constitution, cross-breaking strength and fracture are tough
Property reduction, mechanical performance improved, and manganese Mn content is controlled in above range, can obtain what mechanical performance corresponded to actual needs
Material;Moreover, adding after manganese Mn, the sintering range that material is obtained expands.Therefore, in order to improve mechanical performance, it need to add
Mn is added in material, and Mn content is controlled between 1~7%.
And then, bonded wear-resistant, decay resistance experiment, to the alloy machine barrel performance obtained by above-mentioned each specific embodiment
It is described further:
First, the boride sample of alloy machine barrel will be taken, anti-wear performance test is carried out, its each test result is as follows:
1. YG6 bull rings are carried out under different rotating speeds, load 100N are tested, the corresponding average friction coefficient of boride sample is such as
Table 2:
Table 2
2. YG6 bull rings are carried out under different rotating speeds, load 100N, compared with carbide alloy YG 8, boride sample pair is tested
The wear weight loss answered such as table 3:
Table 3
3. differentiated friction is with pair, and to test load 100N, rotating speed 800r/min is tested boride sample, and it is put down
Equal coefficient of friction such as table 4:
With YG6 with secondary coefficient of friction | With 45# steel with secondary coefficient of friction | |
Boride sample | 0.40 | 0.55 |
Table 4
4. differentiated friction is with pair, and to test load 100N, rotating speed 800r/min is tested boride sample, and it grinds
Weight losses (compared with carbide alloy YG 8) such as table 5:
Wear and tear loss of weight during 45# steel bull rings | Wear and tear loss of weight during YG6 steel bull rings | |
Boride sample | 1.26 | 1.96 |
Carbide alloy YG 8 | 0.34 | 1.09 |
Table 5
From above-mentioned test data of experiment, the wearability for producing the alloy machine cylinder material being made by the present invention is only secondary
In hard alloy.
Then, the boride sample and steel as matrix material of alloy machine barrel are taken, the survey of the decay resistance of different condition is carried out
Examination contrast, its each test result is as follows:
1. at ambient temperature, boride sample and steel as matrix material are corroded to 65h situation in 65% nitric acid respectively
To such as table 6:
Table 6
2. at ambient temperature, by boride sample and steel as matrix material respectively in nitrate acid and hydrofluoric acid (according to " GB/
T4334.4-2000”《Stainless steel nitrate acid and hydrofluoric acid corrosion tests》Configure 10% nitric acid, 3% hydrofluoric acid etching solution)
In, corrode 24h situation to such as table 7:
Table 7
3. at ambient temperature, by boride sample and steel as matrix material respectively in sulfuric acid-copper-bath (according to " GB/
T4334.5-2000”《Stainless steel sulfuric acid-copper sulphate corrosion tests》Configure sulfuric acid-copper sulphate etchant solution) in, corrosion
30h situation is to such as table 8:
Table 8
4. at ambient temperature, boride sample and steel as matrix material are corroded to 65h situation pair in 5% sulfuric acid respectively
Such as table 9:
Table 9
5. boride sample and steel as matrix material are corroded into 60h situation to such as table 10 in natural sea-water respectively:
Table 10
From above-mentioned test data of experiment, by the corrosion resistance of disclosed alloy machine cylinder material equivalent to
Stainless steel or better than stainless steel.
A kind of disclosed bimetallic alloy machine barrel material and its production technology, in terms of material, pass through pairing
The control of each raw material proportioning in golden machine barrel material, to ensure the intensity and hardness of the material made.Add and contain in material
The material powder of manganese, further to improve the intensity and hardness of material, meanwhile, also expand the sintering range of material;Should
Alloy machine cylinder material hardness is chosen, and hardness is up to HRC55~69, and high-temperature behavior is excellent, and operational temperature is 300~800 DEG C, is resisted
Curved intensity is up to 486.74~1128.39MPa, and density is 7.8~8.2 × 103Kg/m3, and density and steel matrix are close, are broken tough
Property high, excellent in abrasion resistance (as shown in table 2~5), fine corrosion resistance (as shown in table 6~10), process aspect, by life
Reducing atmosphere degreasing vacuum sintering technology technology is used in production. art so that material property is more stable, substantially increases system
Into the yield rate of alloy machine barrel base substrate, it is ensured that the long-time stability in injection molding extruder cylinder production process, it is ensured that alloy machine
Cylinder is under severe applying working condition, and service life substantially exceeds the service life of existing all kinds alloy machine barrel.
Described above is only, to presently preferred embodiments of the present invention, not the scope of the present invention to be defined, therefore is not being taken off
On the premise of design spirit of the present invention, this area ordinary skill technical staff is to construction of the present invention, feature and principle
In the equivalence changes or decoration made, the protection domain that the present patent application patent all should be fallen into.
Claims (10)
1. a kind of bimetallic alloy machine barrel material, it is characterised in that the alloy machine cylinder material presses the quality of following material powder
Score ratio proportioning is formed:
Molybdenum Mo:25~50%, boron:2~10%, chromium Cr:5~15%, nickel:2~10%, manganese Mn:1~5%, carbon C:0.1~
1%, chromium carbide:0.8~3%, iron Fe:Surplus;
Wherein, boron is added with the alloy form of FeB.
2. alloy machine cylinder material according to claim 1, it is characterised in that:The powder degree of each material powder is as follows:
Molybdenum Mo:1~8 μm, boron:1~15 μm, chromium Cr:1~20 μm, nickel:2~10 μm;Manganese Mn:1~15 μm, iron Fe:2~10
μm, carbon C:2~10 μm, chromium carbide Cr3C2:1~10 μm.
3. alloy machine cylinder material according to claim 1, it is characterised in that:The purity of each material powder is as follows:
Molybdenum Mo:More than 99.8%, boron:More than 99.7%, chromium Cr:More than 99.8%, nickel:More than 99.5%, manganese Mn:
More than 99.5%, iron Fe:More than 99.5%, chromium carbide Cr3C2:More than 99%, carbon C:More than 99.7%.
4. a kind of production technology that alloy machine barrel is made with any one of claims 1 to 3 bimetallic alloy machine barrel material, its
It is characterised by, the production craft step is as follows:
1) ball milling starting powder:Starting powder is taken by with weight/power ratio, and thicker powder is subjected to ball milling in advance, liquid is obtained and mixes
It is fit;
2) mix dry powders:The starting powders that do not add of others are added into steps 1) liquid mixture in, and match one
After quantitative liquid medium and hard spheres medium are well mixed, carry out the separation of ball liquid and be dried in vacuo, obtain block powder, then
Block powder is subjected to pulverization process, mix powder is obtained;
3) powder compacts:By step 2) mix powder be fitted into pre-designed base substrate mould, through supercooling etc. it is quiet
Pressure technique, molding or machine pressure, are made blank body;
4) base substrate machining and shaping:By step 3) blank body pass through machine tooling shaping, be made blank material;
5) it is vacuum degreasing sintered:By step 4) blank material be put into sintering furnace and be sintered, alloy base substrate half is made
Finished product;
6) shaping processing semi-finished product:To step 5) semi-finished product and carry out mechanical shaping and processing, alloy machine barrel base substrate is made;
7) base substrate hot jacket is handled:Take basal body pipe and be heated at high temperature, then the alloy machine barrel base substrate of the precalculated magnitude of interference is bumped into
In aforementioned substrates pipe, after both cool down, bimetallic alloy machine barrel base substrate is obtained;
8) endoporus working process:To step 7) bimetallic alloy machine barrel base substrate carry out inner hole precision processing, be made bimetallic close
Golden machine barrel.
5. production technology according to claim 4, it is characterised in that:The step 1) ball milling when use acetone or anhydrous second
Alcohol and special hard ball are as ball-milling medium, and its Ball-milling Time is 24~72 hours, the liquid mixture that ball milling is obtained
For the mixture of average 2~5 μm of grain size numbers.
6. production technology according to claim 4, it is characterised in that:The step 2) liquid medium be adopted as anhydrous second
Alcohol or acetone and purity are more than 95%, and hard spheres are a diameter of 8~Φ of Φ 15 sintered carbide ball, and spheroid is when mixed broken
Ratio be about 2~4:1~2, ratio of the spheroid in mixing is about 1~2:2~4, wherein, the feed molar ratio of liquid medium
For solid-liquid volume ratio 3~5, incorporation time is usually 24~72 hours, the ball mill grinding best results obtained by above ratio
For 2~5 μm.
7. production technology according to claim 4, it is characterised in that:In the step 3) during, need to be in base substrate mould
Has surface uniform pressurization, compressive load per unit area is not less than 100Mpa~300Mpa.
8. production technology according to claim 4, it is characterised in that:The step 4) in blank material linearity for≤
1000/0.2~0.5 μm, the circularity of blank material is≤0.2~0.5 μm, the step 6) alloy machine barrel base substrate roundness of external circle
Within 0.005~0.01 μm, the linearity of alloy machine barrel base substrate is within≤1000/0.02, the step 8) bimetallic
The circularity of alloy machine barrel endoporus is 0.005~0.01 μm, and the linearity of bimetallic alloy machine barrel endoporus is≤1000/0.01, should
The surface smoothness of bimetallic alloy machine barrel endoporus is >=0.4~0.8.
9. production technology according to claim 4, it is characterised in that the step 5) using protective atmosphere sintering or heat
Isostatic sintering, its end vacuum is 1.0 × more than 10-4pa, and its sintering process is divided into the following three stage:
1. first stage:0~550 DEG C of heating, heating and soaking time are or so 5~6 hours, and during which auxiliary is filled with a constant current
The protective gas of amount carries out degreasing, and the gas is argon gas, nitrogen or hydrogen, wherein, pressure is 0.2~0.8mpa, and flow is
10-40L/min;
2. second stage:Within 550 DEG C~1100 DEG C of heating, heating and soaking time 5~7 hours;
3. phase III:Within 1100 DEG C~1380 DEG C of heating, heating and soaking time are 3~5 hours, with stove after the completion of sintering
Cooling, completes sintering.
10. production technology according to claim 4, it is characterised in that:The step 7) basal body pipe heating-up temperature be 600
DEG C~1000 DEG C, its cooling treatment is natural cooling or fan coolling in air at normal temperatures and pressures.
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