CN106833035B - Release coating for sintering cemented carbide - Google Patents
Release coating for sintering cemented carbide Download PDFInfo
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- CN106833035B CN106833035B CN201611189765.XA CN201611189765A CN106833035B CN 106833035 B CN106833035 B CN 106833035B CN 201611189765 A CN201611189765 A CN 201611189765A CN 106833035 B CN106833035 B CN 106833035B
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- 238000000576 coating method Methods 0.000 title claims abstract description 60
- 239000011248 coating agent Substances 0.000 title claims abstract description 57
- 238000005245 sintering Methods 0.000 title claims abstract description 23
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims abstract description 164
- 239000004576 sand Substances 0.000 claims abstract description 82
- 239000008118 PEG 6000 Substances 0.000 claims abstract description 77
- 229920001030 Polyethylene Glycol 4000 Polymers 0.000 claims abstract description 77
- 229920002584 Polyethylene Glycol 6000 Polymers 0.000 claims abstract description 77
- 239000006229 carbon black Substances 0.000 claims abstract description 33
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 32
- 239000001856 Ethyl cellulose Substances 0.000 claims abstract description 31
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 claims abstract description 31
- 235000019325 ethyl cellulose Nutrition 0.000 claims abstract description 31
- 229920001249 ethyl cellulose Polymers 0.000 claims abstract description 31
- 239000008367 deionised water Substances 0.000 claims abstract description 28
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 28
- 238000003756 stirring Methods 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004615 ingredient Substances 0.000 claims abstract description 12
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims abstract description 12
- 229920000053 polysorbate 80 Polymers 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 10
- 229920000136 polysorbate Polymers 0.000 claims abstract description 10
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims description 15
- 229920001223 polyethylene glycol Polymers 0.000 claims description 11
- 239000002202 Polyethylene glycol Substances 0.000 claims description 10
- 238000005516 engineering process Methods 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 5
- 229910052593 corundum Inorganic materials 0.000 claims 5
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 5
- 238000002156 mixing Methods 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 16
- 239000000956 alloy Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 8
- 229910017052 cobalt Inorganic materials 0.000 description 8
- 239000010941 cobalt Substances 0.000 description 8
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 8
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007630 basic procedure Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229940023462 paste product Drugs 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- -1 which is added Chemical compound 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- B22F2003/026—Mold wall lubrication or article surface lubrication
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Paints Or Removers (AREA)
- Mold Materials And Core Materials (AREA)
- Ceramic Products (AREA)
Abstract
A kind of release coating for sintering cemented carbide, it is characterised in that: its recipe ingredient and weight percent are: AL2O3Sand: 45-60%；Carbon black: 0.008-0.08%；Zirconium oxide: 0.01-0.035%；Ethyl cellulose: 0.001-0.01%；Tween 80: 5-20%；PEG4000:3-15%；PEG6000:3-15%；Alcohol: 5-20%；Deionized water: 15-35%；Its preparing process is as follows: (1) material pre-processes；(2) preparation steps: step 1: matching sand AL2O3Sand, zirconium oxide, carbon black and ethyl cellulose are sufficiently mixed uniformly, and alcohol is then added and stirs 10-30 minutes acquisition AL2O3With sand, then dry；Step 2: preparing coating: AL is added2O3With sand, tween and PEG4000 and PEG6000 mixed liquor, it is stirred final acquisition release coating.
Description
Technical field
The present invention relates to one kind release coatings used in hard alloy pressure sintering process.
Background technique
CEMENTED CARBIDE PRODUCTION basic procedure is to mix powder, then carry out being pressed into blank, is then sintered into finished product.
During pressure sintering, blank must be placed in above graphite boat, but if blank is directly contacted with boat, will lead to burning
Finished product and boat are viscous and integrated after knot, so that alloy product and boat be caused to scrap.Therefore one must be brushed in boat upper surface
Coating is for being isolated hard alloy blank and boat.Existing coating is only applicable to hard alloy in low cobalt product, high in sintering
In terms of cobalt (cobalt quality molecules number is 10% or more) product, special product substance is 40g or more product, there is bottom substantially and glues boat,
Deformation, black defect, because existing coating main component is essentially carbon black, tween, PEG, n-butanol, deionized water
Deng, substance 40g or more, to place the pressure that generates on graphite charging tray big, and product contacts closer with graphite surface, and carbon black is being sintered
In the process, it is easier to hard alloy blank surface is penetrated into, black phenomenon occurs so as to cause alloy surface, and cobalt content is got over
Height, it is more that liquid phase occurs in sintering, may pass through coating separation layer to product bottom and glues boat, and then leads to deformation of products, glues boat, face
Color blacks.Possibly even lead to scrap of the product.
Summary of the invention
The object of the present invention is to provide a kind of release coatings for sintering cemented carbide, are suitable for low cobalt, high cobalt hard
Alloy product uses when being sintered, and product colour is avoided to black and viscous boat phenomenon.
In order to achieve the above objectives, the formula technique scheme that the present invention uses is: a kind of for the anti-sticking of sintering cemented carbide
Coating, recipe ingredient and weight percent are:
AL2O3Sand: 45-60%；
Carbon black: 0.008-0.08%；
Zirconium oxide: 0.01-0.035%；
Ethyl cellulose: 0.001-0.01%；
Tween 80: 5-20%；
PEG4000:3-15%；
PEG6000:3-15%；
Alcohol: 5-20%；
Deionized water: 15-35%；
In the above component, the AL2O3The mesh number of sand is 50 mesh to 80 mesh, and the mesh number of zirconium oxide is 200 mesh to 300 mesh；
Purity >=99.8% of the carbon black, the viscosity of ethyl cellulose are 1.5-5mPas；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second that molecular weight is 6000
Glycol, and the weight ratio of the PEG4000 and PEG6000 is 1:1 to 1:1.2.
In order to achieve the above objectives, the product technology scheme that the present invention uses is: a kind of for the anti-sticking of sintering cemented carbide
Coating, the recipe ingredient and weight percent of the release coating are:
AL2O3Sand: 45-60%；
Carbon black: 0.008-0.08%；
Zirconium oxide: 0.01-0.035%；
Ethyl cellulose: 0.001-0.01%；
Tween 80: 5-20%；
PEG4000:3-15%；
PEG6000:3-15%；
Alcohol: 5-20%；
Deionized water: 15-35%；
In the above component, the AL2O3The mesh number of sand is 50 mesh to 80 mesh, and the mesh number of zirconium oxide is 200 mesh to 300 mesh；
Purity >=99.8% of the carbon black, the 1.5-5mPas of ethyl cellulose；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second that molecular weight is 6000
Glycol, and the weight ratio of the PEG4000 and PEG6000 is 1:1 to 1:1.2；Described PEG4000, PEG6000 prepare solution
When the sum of PEG4000 and PEG6000 and deionized water weight ratio be 1:2 to 1:5.5；
The preparing process of the release coating is as follows:
(1) material pre-processes
The AL2O3Sand need in advance individually using calcine technology handle, calcination temperature control 1000 DEG C -1400 DEG C it
Between, calcination time was at 4-6.5 hours；
Described PEG4000, PEG6000 and deionized water need to be pre-mixed and be sufficiently uniformly dissolved acquisition by stirring
PEG4000 and PEG6000 mixed liquor；
(2) specific preparation steps
Step 1: matching sand
AL is added by the formula rate in a reservoir2O3Sand, zirconium oxide, carbon black and ethyl cellulose, are stirred, and fill
Divide and be uniformly mixed, is then slowly added to alcohol by the formula rate and stirs 10-30 minutes acquisition AL2O3With sand, then will
AL2O3It is dried with sand, dries temperature control 20-30 degree；
Step 2: preparing coating
AL is added by the formula rate in a reservoir2O3With sand, tween and PEG4000 and PEG6000 mixed liquor, fill
Divide and be stirred, finally obtains release coating.
The principle of the invention is: using AL2O3Sand (50-80 mesh) is used as this coating main component, and brushing charging tray surface forms one
Layer resistance to compression layer, product is not allowed to be displaced in liquid-phase sintering, while sand coating angle of wetting is small, product boat not easy to stick, deformation；Charcoal is added
Black (purity >=99.8%) is the carbon potential demand in order to be effectively ensured in coating；It is that neutralization is small that zirconium oxide (- 300 mesh of 200 mesh), which is added,
Oxygen in part coatings, while filling AL2O3Sand gap guarantees charging tray surfacing；Ethyl cellulose is being applied as binder
The first step that material is prepared is uniformly distributed carbon black, zirconium oxide in the process with sand；Tween 80 is as lubricant, when making brushing charging tray
Can be more dispersed, guarantee surfacing and smooth；And two kinds of PEG4000, PEG6000 solid sand forming agents are added in coating, due to
PEG6000 molecular weight ratio PEG4000 is big, and viscosity has differences, brushing charging tray when sintering at high temperature, PEG4000, PEG6000 meeting
Successively cracking, PEG4000 are first cracked, and and then PEG6000 is cracked, and be ensure that forming agent gradually cracks on charging tray, are played buffering
Effect.
Since the present invention uses AL2O3Sand (40-80 mesh) and other ingredients still maintain one layer in the higher situation of temperature
Planar isolated layer, receiving pressure is big, and sintering is able to satisfy the sintering of various shapes product and requires, while AL2O3Sand PEG4000,
PEG6000 hybrid adhesive effect under, sand be fixed on it is not easily to fall off on charging tray, charging tray dry rear surface formed one layer uniformly it is attached
Sand film, pendulum soft paste product bottom are not easy to be formed scratch, and pressure surface atmosphere, uniform force under product when liquid-phase sintering avoid product
Bottom scratch, metaboly also avoid alloy liquid phase under high temperature and puncture coating separation layer, so that product be avoided to glue boat and become
Shape.Product colour is avoided to black and viscous boat phenomenon in conclusion the present invention is that one kind is effective, while easy to make, performance is stablized,
At low cost is sintered coating for low cobalt, high-cobalt hart metal product.
Specific embodiment
The present invention will be further described below with reference to examples:
Embodiment 1:
A kind of release coating for sintering cemented carbide, the recipe ingredient and weight percent of the release coating are:
AL2O3Sand: 50%；
Carbon black: 0.008%；
Zirconium oxide: 0.01%；
Ethyl cellulose: 0.002%；
Tween 80: 5.98%；
PEG4000:3%；
PEG6000:3%；
Alcohol: 5%；
Deionized water: 33%.
In the above component, the AL2O3The mesh number of sand is 60 mesh, and the mesh number of zirconium oxide is 200 mesh；
Purity >=99.8% of the carbon black, the 1.5-5mPas of ethyl cellulose；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second that molecular weight is 6000
Glycol, and the weight ratio of the PEG4000 and PEG6000 is 1:1；When described PEG4000, PEG6000 prepare solution
The weight ratio of the sum of PEG4000 and PEG6000 and deionized water is 1:5.5；
The preparing process of the release coating is as follows:
(1) material pre-processes
The AL2O3Sand needs individually to handle using calcine technology in advance, and calcination temperature is controlled at 1300 DEG C, and calcination time exists
4.15 hour；
Described PEG4000, PEG6000 and deionized water need to be pre-mixed and be sufficiently uniformly dissolved acquisition by stirring
PEG4000 and PEG6000 mixed liquor；
(2) specific preparation steps
Step 1: matching sand
AL is added by the formula rate in a reservoir2O3Sand, zirconium oxide, carbon black and ethyl cellulose, are stirred 15
Minute, it is sufficiently mixed uniformly, is then slowly added to alcohol by the formula rate and stirs 30 minutes acquisition AL2O3With sand, then
By AL2O3It is dried with sand, dries temperature and control 25 degree；
Step 2: preparing coating
AL2O3 is added by the formula rate in a reservoir and matches sand, tween and PEG4000 and PEG6000 mixed liquor,
Stirring is sufficiently mixed for 50 minutes, finally obtains release coating.
Embodiment 2:
A kind of release coating for sintering cemented carbide, the recipe ingredient and weight percent of the release coating are:
AL2O3Sand: 50%；
Carbon black: 0.015%；
Zirconium oxide: 0.01%；
Ethyl cellulose: 0.005%；
Tween 80: 6%；
PEG4000:3%；
PEG6000:3%；
Alcohol: 5%；
Deionized water: 32.97%.
In the above component, the AL2O3The mesh number of sand is 80 mesh, and the mesh number of zirconium oxide is 200 mesh to 300 mesh；
Purity >=99.8% of the carbon black, the 1.5-5mPas of ethyl cellulose；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second that molecular weight is 6000
Glycol, and the weight ratio of the PEG4000 and PEG6000 is 1:1；When described PEG4000, PEG6000 prepare solution
The weight ratio of the sum of PEG4000 and PEG6000 and deionized water is 1:5.495；
The preparing process of the release coating is as follows:
(1) material pre-processes
The AL2O3Sand needs individually to handle using calcine technology in advance, and calcination temperature is controlled at 1250 DEG C, and calcination time exists
4.56 hour；
Described PEG4000, PEG6000 and deionized water need to be pre-mixed and be sufficiently uniformly dissolved acquisition by stirring
PEG4000 and PEG6000 mixed liquor；
(2) specific preparation steps
Step 1: matching sand
AL is added by the formula rate in a reservoir2O3Sand, zirconium oxide, carbon black and ethyl cellulose stir 10 minutes,
It is sufficiently mixed uniformly, is then slowly added to alcohol by the formula rate and stirs 30 minutes acquisition AL2O3With sand, then will
AL2O3It is dried with sand, dries temperature and control 20 degree；
Step 2: preparing coating
AL is added by the formula rate in a reservoir2O3With sand, tween and PEG4000 and PEG6000 mixed liquor, stir
It mixes 20 minutes and is sufficiently mixed, finally obtain release coating.
Embodiment 3:
A kind of release coating for sintering cemented carbide, the recipe ingredient and weight percent of the release coating are:
AL2O3Sand: 45%；
Carbon black: 0.007%；
Zirconium oxide: 0.012%；
Ethyl cellulose: 0.001%；
Tween 80: 6%；
PEG4000:4%；
PEG6000:4%；
Alcohol: 5.98%；
Deionized water: 35%.
In the above component, the AL2O3The mesh number of sand is 50 mesh, and the mesh number of zirconium oxide is 300 mesh；
Purity >=99.8% of the carbon black, the 1.5-5mPas of ethyl cellulose；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second that molecular weight is 6000
Glycol, and the weight ratio of the PEG4000 and PEG6000 is 1:1；When described PEG4000, PEG6000 prepare solution
The weight ratio of the sum of PEG4000 and PEG6000 and deionized water is 1:4.375；
The preparing process of the release coating is as follows:
(1) material pre-processes
The AL2O3Sand needs individually to handle using calcine technology in advance, and calcination temperature is controlled at 1000 DEG C, and calcination time exists
5.16 hour；
Described PEG4000, PEG6000 and deionized water need to be pre-mixed and be sufficiently uniformly dissolved acquisition by stirring
PEG4000 and PEG6000 mixed liquor；
(2) specific preparation steps
Step 1: matching sand
AL is added by the formula rate in a reservoir2O3Sand, zirconium oxide, carbon black and ethyl cellulose stir 5 minutes,
It is sufficiently mixed uniformly, is then slowly added to alcohol by the formula rate and stirs 10 minutes acquisition AL2O3With sand, then will
AL2O3It is dried with sand, dries temperature and control 30 degree；
Step 2: preparing coating
AL is added by the formula rate in a reservoir2O3With sand, tween and PEG4000 and PEG6000 mixed liquor, stir
It mixes 20 minutes and is sufficiently mixed, finally obtain release coating.
Embodiment 4:
A kind of release coating for sintering cemented carbide, the recipe ingredient and weight percent of the release coating are:
AL2O3Sand: 55%；
High-purity carbon black: 0.007%；
Zirconium oxide: 0.012%；
Ethyl cellulose: 0.001%；
Tween 80: 8%；
PEG4000:4%；
PEG6000:4%；
Alcohol: 5%；
Deionized water: 23.98%.
In the above component, the AL2O3The mesh number of sand is 70 mesh, and the mesh number of zirconium oxide is 250 mesh；
Purity >=99.8% of the carbon black, the 1.5-5mPas of ethyl cellulose；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second that molecular weight is 6000
Glycol, and the weight ratio of the PEG4000 and PEG6000 is 1:1；When described PEG4000, PEG6000 prepare solution
The weight ratio of the sum of PEG4000 and PEG6000 and deionized water is 1:2.99.
The preparing process of the release coating is as follows:
(1) material pre-processes
The AL2O3Sand needs individually to handle using calcine technology in advance, and calcination temperature is controlled at 1400 DEG C, and calcination time exists
4.01 hour；
Described PEG4000, PEG6000 and deionized water need to be pre-mixed and be sufficiently uniformly dissolved acquisition by stirring
PEG4000 and PEG6000 mixed liquor；
(2) specific preparation steps
Step 1: matching sand
AL is added by the formula rate in a reservoir2O3Sand, zirconium oxide, carbon black and ethyl cellulose stir 5 minutes,
It is sufficiently mixed uniformly, is then slowly added to alcohol by the formula rate and stirs 10 minutes acquisition AL2O3With sand, then will
AL2O3It is dried with sand, dries temperature and control 30 degree；
Step 2: preparing coating
AL is added by the formula rate in a reservoir2O3With sand, tween and PEG4000 and PEG6000 mixed liquor, stir
It mixes 20 minutes and is sufficiently mixed, finally obtain release coating.
Embodiment 5:
A kind of release coating for sintering cemented carbide, the recipe ingredient and weight percent of the release coating are:
AL2O3Sand: 60%；
Carbon black: 0.007%；
Zirconium oxide: 0.012%；
Ethyl cellulose: 0.001%；
Tween 80: 8%；
PEG4000:3%；
PEG6000:3.98%；
Alcohol: 5%；
Deionized water: 20%.
In the above component, the AL2O3The mesh number of sand is -50 mesh of 40 mesh, and the mesh number of zirconium oxide is 200 mesh；
Purity >=99.8% of the carbon black, the viscosity of ethyl cellulose are 1.5-5mPas；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second that molecular weight is 6000
Glycol, and the weight ratio of the PEG4000 and PEG6000 is about 1:1.327；Described PEG4000, PEG6000 prepare solution
When the sum of PEG4000 and PEG6000 and the weight ratio of deionized water be about 1:2.87.
The preparing process of the release coating is as follows:
(1) material pre-processes
The AL2O3Sand needs individually to handle using calcine technology in advance, and calcination temperature is controlled at 1300 DEG C, and calcination time exists
4.30 hour；
Described PEG4000, PEG6000 and deionized water need to be pre-mixed and be sufficiently uniformly dissolved acquisition by stirring
PEG4000 and PEG6000 mixed liquor；
(2) specific preparation steps
Step 1: matching sand
AL is added by the formula rate in a reservoir2O3Sand, zirconium oxide, carbon black and ethyl cellulose, are stirred 15
Minute, it is sufficiently mixed uniformly, is then slowly added to alcohol by the formula rate and stirs 30 minutes acquisition AL2O3With sand, then
By AL2O3It is dried with sand, dries temperature and control 25 degree；
Step 2: preparing coating
AL2O3 is added by the formula rate in a reservoir and matches sand, tween and PEG4000 and PEG6000 mixed liquor,
Stirring is sufficiently mixed for 50 minutes, finally obtains release coating.
Embodiment 6:
A kind of release coating for sintering cemented carbide, the recipe ingredient and weight percent of the release coating are:
AL2O3Sand: 48%；
Carbon black: 0.06%；
Zirconium oxide: 0.012%；
Ethyl cellulose: 0.008%；
Tween 80: 8%；
PEG4000:6%；
PEG6000:5%；
Alcohol: 8%；
Deionized water: 24.92%.
In the above component, the AL2O3The mesh number of sand is 50-60 mesh, and the mesh number of zirconium oxide is 300 mesh；
Purity >=99.8% of the carbon black, the viscosity of ethyl cellulose are 1.5-5mPas；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second that molecular weight is 6000
Glycol, and the weight ratio of the PEG4000 and PEG6000 is 1:1.2；When described PEG4000, PEG6000 prepare solution
The weight ratio of the sum of PEG4000 and PEG6000 and deionized water is about 1:2.27.
The preparing process of the release coating is as follows:
(1) material pre-processes
The AL2O3Sand needs individually to handle using calcine technology in advance, and calcination temperature is controlled at 1000 DEG C, and calcination time exists
5.5 hour；
Described PEG4000, PEG6000 and deionized water need to be pre-mixed and be sufficiently uniformly dissolved acquisition by stirring
PEG4000 and PEG6000 mixed liquor；
(2) specific preparation steps
Step 1: matching sand
AL is added by the formula rate in a reservoir2O3Sand, zirconium oxide, carbon black and ethyl cellulose stir 5 minutes,
It is sufficiently mixed uniformly, is then slowly added to alcohol by the formula rate and stirs 10 minutes acquisition AL2O3With sand, then will
AL2O3It is dried with sand, dries temperature and control 30 degree；
Step 2: preparing coating
AL is added by the formula rate in a reservoir2O3With sand, tween and PEG4000 and PEG6000 mixed liquor, stir
It mixes 20 minutes and is sufficiently mixed, finally obtain release coating.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of release coating for sintering cemented carbide, it is characterised in that: its recipe ingredient and weight percent are:
Al 2O3Sand: 45-60%；
Carbon black: 0.008-0.08%；
Zirconium oxide: 0.01-0.035%；
Ethyl cellulose: 0.001-0.01%；
Tween 80: 5-20%；
PEG4000:3-15%；
PEG6000:3-15%；
Alcohol: 5-20%；
Deionized water: 15-35%；
In the above component, the Al2O3The mesh number of sand is 50 mesh to 80 mesh, and the mesh number of zirconium oxide is 200 mesh to 300 mesh；
Purity >=99.8% of the carbon black, the 1.5-5mPas of ethyl cellulose；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second two that molecular weight is 6000
Alcohol, and the weight ratio of the PEG4000 and PEG6000 is 1:1 to 1:1.2.
2. a kind of release coating for sintering cemented carbide, it is characterised in that: the recipe ingredient and weight of the release coating
Percentage is:
Al 2O3Sand: 45-60%；
Carbon black: 0.008-0.08%；
Zirconium oxide: 0.01-0.035%；
Ethyl cellulose: 0.001-0.01%；
Tween 80: 5-20%；
PEG4000:3-15%；
PEG6000:3-15%；
Alcohol: 5-20%；
Deionized water: 15-35%；
In the above component, the Al2O3The mesh number of sand is 50 mesh to 80 mesh, and the mesh number of zirconium oxide is 200 mesh to 300 mesh；
Purity >=99.8% of the carbon black, the 1.5-5mPas of ethyl cellulose；
The PEG4000 is the polyethylene glycol that molecular weight is 4000, and the PEG6000 is the poly- second two that molecular weight is 6000
Alcohol, and the weight ratio of the PEG4000 and PEG6000 is 1:1 to 1:1.2；When described PEG4000, PEG6000 prepare solution
The weight ratio of the sum of PEG4000 and PEG6000 and deionized water is 1:2 to 1:5.5；The preparing process of the release coating is such as
Under:
(1) material pre-processes
The Al2O3Sand needs individually to handle using calcine technology in advance, and calcination temperature controls between 1000 DEG C -1400 DEG C, forges
The time is burnt at 4-6.5 hours；
Described PEG4000, PEG6000 and deionized water need to be pre-mixed and be sufficiently uniformly dissolved acquisition by stirring
PEG4000 and PEG6000 mixed liquor；
(2) specific preparation steps
Step 1: matching sand
Al is added by the formula rate in a reservoir2O3Sand, zirconium oxide, carbon black and ethyl cellulose, are stirred, sufficiently mixed
It closes uniformly, is then slowly added to alcohol by the formula rate and stirs 10-30 minutes acquisition Al2O3With sand, then by Al2O3
It is dried with sand, dries temperature control 20-30 degree；
Step 2: preparing coating
Al is added by the formula rate in a reservoir2O3With sand, tween and PEG4000 and PEG6000 mixed liquor, sufficiently stir
Mixing is mixed, release coating is finally obtained.
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| CN109856360A (en) * | 2018-12-31 | 2019-06-07 | 武汉新锐合金工具有限公司 | A kind of test method measuring mixture linear contractive quotiety |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102876094A (en) * | 2012-10-19 | 2013-01-16 | 广西梧州港德硬质合金制造有限公司 | Hard alloy sintered antisticking coating |
| CN105294136A (en) * | 2015-12-07 | 2016-02-03 | 河南省大地合金股份有限公司 | Coating for sintering of hard alloy |
| CN105419408A (en) * | 2015-07-24 | 2016-03-23 | 洛阳新巨能高热技术有限公司 | Hard alloy substrate sintering anti-adhesion coating |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876094A (en) * | 2012-10-19 | 2013-01-16 | 广西梧州港德硬质合金制造有限公司 | Hard alloy sintered antisticking coating |
| CN105419408A (en) * | 2015-07-24 | 2016-03-23 | 洛阳新巨能高热技术有限公司 | Hard alloy substrate sintering anti-adhesion coating |
| CN105294136A (en) * | 2015-12-07 | 2016-02-03 | 河南省大地合金股份有限公司 | Coating for sintering of hard alloy |
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Effective date of registration: 20240613 Address after: No. 102 Changbei Street, Daji Street, Caidian District, Wuhan City, Hubei Province, 430113 Patentee after: WUHAN XINRUI ALLOY TOOLS CO.,LTD. Country or region after: China Address before: 433124 No.1 Guanghua Qianjin Road, Qianjiang City, Hubei Province Patentee before: QIANJIANG XINRUI CARBIDE TOOLS CO.,LTD. Country or region before: China |