CN101260516A - Method for improving high abrasion of silicon carbide ceramic production device - Google Patents
Method for improving high abrasion of silicon carbide ceramic production device Download PDFInfo
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- CN101260516A CN101260516A CNA2008100893063A CN200810089306A CN101260516A CN 101260516 A CN101260516 A CN 101260516A CN A2008100893063 A CNA2008100893063 A CN A2008100893063A CN 200810089306 A CN200810089306 A CN 200810089306A CN 101260516 A CN101260516 A CN 101260516A
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- silicon carbide
- pug
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- stupalith
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Abstract
The invention relates to a method for improving the high abrasion of carborundum ceramic production equipment, which belongs to the special ceramic processing field. The method for improving the high abrasion of carborundum ceramic production equipment is characterized in that: a layer of high-hardness alloy material or high-hardness ceramic material plating layer is adhered on the surfaces of the equipment and a die contacted with the carborundum pug, thereby improving the hardness of the surfaces of the equipment and the die. In the invention, concoction addition agent and organic powder material are also added to the pug to reduce the hardness of the pug and make the surface smooth; therefore, when the pug is extruded out, the friction force is reduced to lessen the abrasion to the equipment and the die. After the method is adopted, the life-span of the equipment and the die is greatly prolonged.
Description
Technical field
The present invention relates to the special cermacis manufacture field, particularly relate to a kind of method of improving high abrasion of silicon carbide ceramic production device.
Background technology
Silicon carbide is a kind of ceramic, because it has characteristics such as high rigidity, high-wearing feature, high corrosion resistance and higher high temperature strength, be used for wear-resisting, the anti-corrosion and resistant to elevated temperatures component of machine of various requirement, become a kind of important engineering material, be widely used in departments such as machinery, metallurgy, chemical industry, electronics.The silicon carbide ceramics goods adopt normal atmosphere sintering method, blank with higher sintering temperature sintered silicon carbon, make it the density that reaches higher, resulting silicon carbide ceramics sintered compact erosion resistance, antioxidant property and hot strength are all higher, and intensity does not reduce in the time of 1600 ℃.Thereby its goods are particularly suitable for wear-resisting, corrosion-resistant and resistant to elevated temperatures occasion and use, as wear ring, mill Jie, sand spit, armour etc.But the method for making of silicon carbide blank adopts extruding-out process more, because the high rigidity of carbofrax material, and the hardness of our common equipment steel is all low than carbofrax material, and the wear problem of therefore producing equipment, the mould of silicon carbide blank is to restrict the key that can silicon carbide honeycomb ceramics suitability for industrialized production.
Summary of the invention
At the defective in the above-mentioned field, the present invention produces pug two aspects from two equipment or mould and blank and sets about solving the equipment of producing the silicon carbide blank, the high wear problem of mould, improve at equipment, the mould of producing the silicon carbide pug on the one hand, improve the equipment of producing blank, the wear resistance of mould, thereby improve the work-ing life of equipment and mold; On the other hand under the situation that does not reduce all kinds of performances of silicon carbide articles, improve the silicon carbide blank and produce oilness, the flowability of pug, can also reduce the wearing and tearing of pug by the content that reduces silicon carbide in the moulding pug equipment or mould for the porous silicon carbide material.
A kind of method of improving high abrasion of silicon carbide ceramic production device is characterized in that: adhere to one deck high hardness alloy material or high rigidity stupalith coating at the equipment, the die surface that contact with the silicon carbide pug.
Described high hardness alloy material is nickel-phosphorus alloy, tungsten or titanium alloy, and the high rigidity stupalith is silicon carbide, wolfram varbide or diamond.
Described thickness of coating is 5-50um.
Described attachment means is to adopt by vapour deposition process, electroless plating method or hot spray process.
Described high rigidity stupalith is a wolfram varbide, and attachment means is a vapour deposition process.
Described high rigidity stupalith is a silicon carbide, and attachment means is an electroless plating method.
Described high rigidity stupalith is a diamond, and attachment means is a hot spray process.
Be added with dispersion agent, tensio-active agent in the described silicon carbide pug or/and lubricant is in harmonious proportion auxiliary agent, carborundum content is not less than 80% in the described pug.
Described mediation auxiliary agent comprises: one or more in urethane, acrylate, nonionogenic tenside (as: polyethers), silicone oil, the silicon oil modified thing.
Also add in the described silicon carbide pug one or more organic resins or starch powder are arranged.
The present invention as high hardness alloy or high rigidity stupalith, improves the hardness of equipment and materials contact surface by the equipment surface that contacts with the silicon carbide pug is adhered to one deck high hardness material, improves the wearability of equipment and materials with this.The present invention adopts vapour deposition process or electroless plating method or thermal spraying, the even and strong adhesion of the adhesion layer of aforesaid method gained, difficult drop-off.Vapour deposition process adopts following steps: at first the equipment that will process (equipment refers to palpus coating face) or mould cooperate ultrasonic wave to clean with special tensio-active agent, spot on the coating face and iron rust are cleaned up, then airing.Workpiece that must coating is placed on the Stage microscope of vapor deposition apparatus, and the face that equipment must coating sticks with barrier film earlier.Then according to the vapour deposition process opening device of routine, make the coating material of gasification be deposited on must coating equipment or die surface.Coating thickness can control according to the time, concrete thickness of coating is poor between the finish size of equipment or mould and the size.Electroless plating method is to adopt following steps: the equipment or the mould of palpus coating are cleaned up according to above method, will not need the face of coating to isolate with barrier film.Then equipment or mould are immersed in the chemical plating fluid fully, control the thickness of coating, after thickness of coating reaches requirement, equipment or mould are taken out, the raffinate on surface is cleaned up with clear water according to the method for the electroless plating sampling and testing of routine.Further if desired hardening equipment or mould can be incubated 3-10 hour with equipment or mould in 300-400 ℃ baking oven, hardness and the bonding force between coating and die matrix to mould all plays further enhanced effect like this.Thermal spraying adopts following steps: utilize the thermal source of certain form that the diamond spray material is heated, make it to form the particulate of molten state, these particulates are under the effect of power, with certain velocity shock and heavy being attached on the matrix surface, formation has the coating of certain characteristic, thus the resistance to abrasion of enhancing equipment, mould.
The present invention simultaneously further reduces the hardness of silicon carbide pug, in the silicon carbide pug, add Polyurethane, CALCIUM ACRYLATE, polyethers, nonionogenic tenside, silicone oil, silicon oil modified thing (hydroxyl modification silicone oil, epoxide modified silicone oil, polyether modified silicon oil) after this class material adds in the pug, when being in harmonious proportion, pug can in pug, form the lubricated film of one deck in the surface of inorganic raw material silicon carbide, like this in the process of producing blank, just can directly not contact between silicon carbide powder and equipment or the mould, can reduce the wearing and tearing of equipment or mould so greatly, the dispersiveness between the inorganic raw material powder particle and the enhancing of oilness simultaneously, the flowability that makes blank produce pug strengthens greatly, so also can reduce the wearing and tearing to equipment or mould greatly.If when coming the stupalith of production porous matter with carbofrax material, another kind of way is to add one or more organic resenes or starch based powder in the inorganic raw material that configures by top method, can reduce the concentration of silicon carbide powder like this, thereby reduce the wearing and tearing of pug to equipment, mould, and because in sintering process, organic powder all can be burnt, so not only can not change the performance of pottery, also help the further raising of porous silicon carbide ceramic body void content, this method is specially adapted to produce carborundum porous ceramics.
Under the situation that adopts above-mentioned two kinds of combinations, improved the work-ing life of extrusion equipment greatly.The independent use of method that experiment showed, coating can improve equipment or mould work-ing life 2-4 doubly, in pug, add being in harmonious proportion auxiliary agent and can improving 4-5 work-ing life doubly again, if again in conjunction with adding organic powder, can improve again work-ing life 5-8 doubly.
Specific implementation method
The present invention is described in further detail below in conjunction with embodiment.
Embodiment 1 vapour deposition process coating material: wolfram varbide, thickness of coating: 50um
Adopt following steps: at first the equipment that will process (equipment refers to palpus coating face) or mould cooperate ultrasonic wave to clean with tensio-active agent, spot on the coating face and iron rust are cleaned up, then airing.Workpiece that must coating is placed on the Stage microscope of vapor deposition apparatus, and the face that equipment must coating sticks with barrier film earlier.Then according to the vapour deposition process opening device of routine, make the coating material of gasification be deposited on must coating equipment or die surface.Coating thickness can control according to the time, concrete thickness of coating is poor between the finish size of equipment or mould and the size.
Embodiment 2 electroless plating method coating: silicon carbide, thickness of coating: 25um
Adopt following steps: the equipment or the mould of palpus coating are cleaned up according to above method, will not need the face of coating to isolate with barrier film.Then equipment or mould are immersed in the chemical plating fluid fully, control the thickness of coating, after thickness of coating reaches requirement, equipment or mould are taken out, the raffinate on surface is cleaned up with clear water according to the method for the electroless plating sampling and testing of routine.Further if desired hardening equipment or mould can be incubated 3-10 hour with equipment or mould in 300-400 ℃ baking oven, hardness and the bonding force between coating and die matrix to mould all plays further enhanced effect like this.
Add in the silicon carbide pug that to account for gross weight be 5% urethane, 3% nonionic polyoxyalkylene surface active agent, 2% silicone oil.
Embodiment 3 thermal spraying coating: diamond, thickness of coating: 5um
Adopt following steps:
1. the processing of equipment, die surface: under compressed-air actuated effect, will be through the quartz sand that has corner angle of screening, after sand bucket, the mixing of sebific duct sand gas, high speed impact workpiece surface, the oxide compounds such as rust of having removed matrix surface reach and make the rough purpose of matrix surface.
2. hot metal spraying hard rock:, (select the middling speed spray gun for use, Spray gun nozzle is 2.2mm with spray gun, air cap is 6.0mm) in pressurized air be prime mover, under drive unit promoted, bortz powder (input speed is adjusted into 2-3m/min) was by nozzle, at oxy-acetylene flame (oxygen pressure 6-8Kg/cm
2, acetylene pressure 1.4-1.5Kg/cm
2) heating under, become molten mass, borrow pressurized air to make it to be atomized into particulate and be ejected on equipment, the die surface, form the thermospray dlc protective layer, thickness of coating 5um.Jet length is got 20-30cm, and spray angle is got 10 °-20 °, causes loosely organized, the obscission of sprayed coating because of angle is excessive with regard to having avoided like this.Because the metallic coating after the uneven heat radiation of the matrix surface after the sandblast is shunk can be attached to workpiece surface securely.
Add in the silicon carbide pug that to account for gross weight be 5% vinylformic acid (first) ester, 3% silicone oil, 8% Graphite Powder 99,4% starch.
Embodiment 4 electroless plating method coating: nickel-phosphorus alloy, thickness of coating: 15um
Adopt following steps: see embodiment 2
Add in the silicon carbide pug that to account for gross weight be 5% acrylic resin (thermoplasticity or thermoset all can), 3% starch, 8% Graphite Powder 99,2% polyethers.
Embodiment 5 vapour deposition process coating materials: titanium alloy, thickness of coating: 30um
Adopt following steps: see embodiment 1
Add in the silicon carbide pug that to account for gross weight be 5% nonionic polyoxyalkylene surface active agent, 2% silicon oil modified thing (hydroxyl modification silicone oil; Epoxide modified silicone oil; Polyether modified silicon oil is chosen one wantonly), starch 3%.
Among above-mentioned three embodiment, use separately method of coating, can improve equipment or mould work-ing life 2-4 doubly, in pug, add being in harmonious proportion auxiliary agent and can improving 4-5 work-ing life doubly again, if, can improve 3-5 times of work-ing life more again in conjunction with adding organic powder.
Claims (9)
1, a kind of method of improving high abrasion of silicon carbide ceramic production device is characterized in that: adhere to one deck high hardness alloy material or high rigidity stupalith coating at the equipment, the die surface that contact with the silicon carbide pug.
2, method according to claim 1, described thickness of coating are 5-50um.
3, method according to claim 1, described high hardness alloy material is nickel-phosphorus alloy, tungsten or titanium alloy, the high rigidity stupalith is silicon carbide, wolfram varbide or diamond.
4, method according to claim 3, described high rigidity stupalith is a wolfram varbide, attachment means is a vapour deposition process.
5, method according to claim 3, described high rigidity stupalith is a silicon carbide, attachment means is an electroless plating method.
6, method according to claim 3, described high rigidity stupalith is a diamond, attachment means is a hot spray process.
7, method according to claim 1 is added with dispersion agent, tensio-active agent or/and lubricant is in harmonious proportion auxiliary agent in the described silicon carbide pug, carborundum content is not less than 80% in the described pug.
8, method according to claim 7, described mediation auxiliary agent comprises: one or more in urethane, acrylate, nonionogenic tenside, silicone oil, the silicon oil modified thing.
9, method according to claim 1, also adding in the described silicon carbide pug has one or more organic resins or starch powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100893063A CN101260516A (en) | 2007-10-30 | 2008-04-11 | Method for improving high abrasion of silicon carbide ceramic production device |
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| CN200710176527.X | 2007-10-30 | ||
| CN200710176527 | 2007-10-30 | ||
| CNA2008100893063A CN101260516A (en) | 2007-10-30 | 2008-04-11 | Method for improving high abrasion of silicon carbide ceramic production device |
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| CN101260516A true CN101260516A (en) | 2008-09-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175259A (en) * | 2018-10-15 | 2019-01-11 | 科勒(中国)投资有限公司 | The manufacturing method of the mold of kitchen products and the mold of kitchen products |
| CN110343992A (en) * | 2019-08-05 | 2019-10-18 | 王鸿翔 | A kind of spraying method of plasma wearing layer |
-
2008
- 2008-04-11 CN CNA2008100893063A patent/CN101260516A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175259A (en) * | 2018-10-15 | 2019-01-11 | 科勒(中国)投资有限公司 | The manufacturing method of the mold of kitchen products and the mold of kitchen products |
| CN110343992A (en) * | 2019-08-05 | 2019-10-18 | 王鸿翔 | A kind of spraying method of plasma wearing layer |
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Open date: 20080910 |