CN102274820A - Manufacturing method of isolation board for sintering - Google Patents
Manufacturing method of isolation board for sintering Download PDFInfo
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- CN102274820A CN102274820A CN2011101841104A CN201110184110A CN102274820A CN 102274820 A CN102274820 A CN 102274820A CN 2011101841104 A CN2011101841104 A CN 2011101841104A CN 201110184110 A CN201110184110 A CN 201110184110A CN 102274820 A CN102274820 A CN 102274820A
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- sintering
- division board
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Abstract
The invention discloses a manufacturing method of an isolation board for sintering. The method comprises the following steps of: 1, preparing polyvinyl alcohol or cellulose into an aqueous solution, adding metal oxide powder and stirring uniformly to obtain slurry; 2, uniformly coating slurry on one or two faces of a metal board with a flat surface; and 3, putting the slurry-coated metal board into a drying oven for drying to obtain the isolation board for sintering. The manufacturing method has the advantages of simple procedures, low cost and high production efficiency. The manufactured isolation board for sintering can be used repeatedly. After the isolation board is used, organic matters are volatilized, oxide powder particles fall, and slurry can be repainted on the recycled metal board after soot cleaning, so that an isolation board for sintering is manufactured for repeated use. The isolation board for sintering manufactured with the method is taken as an isolation layer between laminated plate blanks, so that sintering adhesion of the plate blanks can be prevented effectively, the surfaces of the plate blanks are protected, and the surface quality of the sintering plate blanks is not influenced simultaneously.
Description
Technical field
The invention belongs to sheet material blank sintering technology field, be specifically related to a kind of preparation method of sintering division board.
Background technology
Sintering is one of important procedure of materials processing technology in sintering furnace (or heat-treatment furnace), powdered metallurgical material particularly, and sintering is to guarantee that material obtains the requisite operation of final performance.For the sintering of powder metallurgy sheet material blank base substrate, it is the method for using always that the stratiform formula of stacking places the sintering furnace sintering; And the stove that places that the heat treatment of quantity sheet metal blank how also can stack is mutually handled, and the largest benefit of doing like this is the production efficiency height, reduces cost.Present a kind of intimate-association state that has certain extruding force with material between the contact-making surface of the sheet material blank article that stacks layer by layer, the phase counterdiffusion takes place between sheet material blank contact-making surface in sintering process, be easy to bonding (welding) together, can't be separately when serious with sintering sheet material blank; Sometimes when sintering temperature is not high, can separate, but contact-making surface has serious damage.In order to address the above problem, the method of current use has: 1. division board method, between lamination, add one deck division board, this plate requires anti-higher temperature (more than the sintering temperature), generally use and the refractory ceramics plate of not interreaction of sintered body, ceramic cloth or ceramic paper etc., this method can play effectively and prevent the tabular sintered body adhesion, but ceramic material crackle will occur several times in the sintering use, and ceramic paper has volatilization can cause the pollution of agglomerated material and destroys the atmosphere of sintering furnace; 2. oxide sand place mat method, between the stratiform agglomerated material, spread filler equably, filler is a graininess, be generally oxide sand (aluminium oxide or zirconia), this method can cause the sintered body surface pit to occur, adopt thin alumina packing can avoid occurring pit, but thin aluminum oxide sand is easy to fly upward when vacuum drying oven starts, pollute furnace chamber, influence vacuum, influential to the service life of sintering furnace, must take to cover and measure such as sealing, loaded down with trivial details relatively when adopting this method shove charge, need sometimes the sheet material blank is put into sintering furnace earlier, on the sheet material blank, spread oxide sand then; 3. oxide coating method, at sheet metal blank (the necessary anti-sintering high temperature of this plate) surface heat spraying one deck aluminium oxide (zirconium) as division board, this layer coating is very thin, bonding firm, can play the effect that sintering is isolated with this method, but hot-spraying technique expense height, and sprayed coating will come off for 5～6 times in the sintering use, come off and locate not have buffer action, spraying process causes high temperature in manufacturing process, thin metallic plate will be out of shape, and uses the distortion that will cause powder metallurgy sheet material blank sintered body as division board; Though adopt thicker metallic plate can avoid distortion, the time cause that bottom sintered body load-bearing is excessive and attenuation is perhaps too fine and close in stack.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned the deficiencies in the prior art, and the preparation method of a kind of operation sintering division board simple, with low cost is provided.Adopt division board that the present invention makes as the separation layer that stacks between the sheet material blank, can prevent the adhesion of sheet material blank sintering effectively, the surface of sheet material blank is also played a protective role, can not exert an influence simultaneously being sintered sheet material blank surface quality.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method of sintering division board is characterized in that this method may further comprise the steps:
(1) slip preparation: it is 2%～10% the aqueous solution that polyvinyl alcohol or cellulose are mixed with mass percent concentration, adds metal oxide powder then in the aqueous solution for preparing, and obtains slip stirring below 100 ℃;
(2) brush slip: adopt the metallic plate of surfacing,, make the surface of the complete covered metal plate of slip during coating at slip described in the even coating step of the one or both sides of metallic plate (1);
(3) drying: the metallic plate behind the coating slip in the step (2) is put into baking oven dry, obtain the sintering division board.
The addition of metal oxide powder described in the above-mentioned steps (1) is to add 50g～150g metal oxide powder in every premium on currency solution.
Metal oxide powder is alumina powder or Zirconium oxide powder described in the above-mentioned steps (1).
The present invention compared with prior art has the following advantages:
1, operation of the present invention is simple, with low cost, production efficiency is high.
2, the sintering division board of the present invention's making can be reused, this division board uses back (after being sintering), the organic matter volatilization, and the oxide powder particle will come off, the metallic plate that reclaims can be brushed slip again through behind the deashing, makes the sintering division board and reuses.
3, the sintering division board conduct of adopting the present invention to make stacks the separation layer between the sheet material blank; can prevent the adhesion of sheet material blank sintering effectively; surface to the sheet material blank also plays a protective role, and can not exert an influence to being sintered sheet material blank surface quality simultaneously.
Below by embodiment, technical scheme of the present invention is described in further detail.
The specific embodiment
Embodiment 1
(1) slip preparation: it is 2% the aqueous solution that polyvinyl alcohol is mixed with mass percent concentration, in the aqueous solution for preparing, add alumina powder (or Zirconium oxide powder) then, stir under 50 ℃ of conditions and obtain slip, the addition of alumina powder (or Zirconium oxide powder) is to add 50g in every premium on currency solution;
(2) brush slip: adopt the metallic plate (corrosion resistant plate) of surfacing,, make the surface of the complete covered metal plate of slip during coating at slip described in the even coating step of one side (1) of metallic plate;
(3) drying: the metallic plate behind the coating slip in the step (2) is put into baking oven (temperature is controlled between 80 ℃～110 ℃) oven dry, obtain the sintering division board.
The division board that present embodiment is made is that the single face contact is sintered the sheet material blank, plays the division board of buffer action when sintering as bottom and top.During use, division board is placed the bottom and the top of sintering furnace, division board plays a protective role to the surface of sheet material blank, can not exert an influence to sheet material blank surface quality simultaneously.This division board can be reused, and division board uses back (after being sintering), the organic matter volatilization, and the oxide powder particle will come off, and the metallic plate of recovery can be brushed slip again through behind the deashing, makes the sintering division board and reuses.
Embodiment 2
(1) slip preparation: it is 10% the aqueous solution that polyvinyl alcohol is mixed with mass percent concentration, in the aqueous solution for preparing, add Zirconium oxide powder (or alumina powder) then, stir under 80 ℃ of conditions and obtain slip, the addition of Zirconium oxide powder (or alumina powder) is to add 100g in every premium on currency solution;
(2) brush slip: adopt the metallic plate (corrosion resistant plate) of surfacing,, make the surface of the complete covered metal plate of slip during coating at slip described in the even coating step in the two sides of metallic plate (1);
(3) drying: the metallic plate behind the coating slip in the step (2) is put into baking oven (temperature is controlled between 80 ℃～110 ℃) oven dry, obtain the sintering division board.
The division board that present embodiment is made is that the two sides contact is sintered the sheet material blank, and conduct is sintered the division board that plays buffer action between the sheet material blank when sintering.During use, sheet material blank and sintering division board placed at interval carry out sintering, the sintering division board plays a protective role to the surface of sheet material blank, can prevent the adhesion of sheet material blank effectively, can not exert an influence to sheet material blank surface quality simultaneously.This division board can be reused, and division board uses back (after being sintering), the organic matter volatilization, and the oxide powder particle will come off, and the metallic plate of recovery can be brushed slip again through behind the deashing, makes the sintering division board and reuses.
Embodiment 3
(1) slip preparation: it is 6% the aqueous solution that polyvinyl alcohol is mixed with mass percent concentration, in the aqueous solution for preparing, add Zirconium oxide powder (or alumina powder) then, stir under 100 ℃ of conditions and obtain slip, total addition of Zirconium oxide powder (or alumina powder) is to add 150g in every premium on currency solution;
(2) brush slip: adopt the metallic plate (corrosion resistant plate) of surfacing,, make the surface of the complete covered metal plate of slip during coating at slip described in the even coating step of one side (1) of metallic plate;
(3) drying: the metallic plate behind the coating slip in the step (2) is put into baking oven (temperature is controlled between 80 ℃～110 ℃) oven dry, obtain the sintering division board.
The division board that present embodiment is made is that the single face contact is sintered the sheet material blank, plays the division board of buffer action when sintering as bottom and top.During use, division board is placed the bottom and the top of sintering furnace, division board plays a protective role to the surface of sheet material blank, can not exert an influence to sheet material blank surface quality simultaneously.This division board can be reused, and division board uses back (after being sintering), the organic matter volatilization, and the oxide powder particle will come off, and the metallic plate of recovery can be brushed slip again through behind the deashing, makes the sintering division board and reuses.
Embodiment 4
(1) slip preparation: it is 10% the aqueous solution that cellulose is mixed with mass percent concentration, in the aqueous solution for preparing, add alumina powder (or Zirconium oxide powder) then, stir under 30 ℃ of conditions and obtain slip, the addition of alumina powder (or Zirconium oxide powder) is to add 50g in every premium on currency solution;
(2) brush slip: adopt the metallic plate (corrosion resistant plate) of surfacing,, make the surface of the complete covered metal plate of slip during coating at slip described in the even coating step in the two sides of metallic plate (1);
(3) drying: the metallic plate behind the coating slip in the step (2) is put into baking oven (temperature is controlled between 80 ℃～110 ℃) oven dry, obtain the sintering division board.
The division board that present embodiment is made is that the two sides contact is sintered the sheet material blank, and conduct is sintered the division board that plays buffer action between the sheet material blank when sintering.During use, sheet material blank and sintering division board placed at interval carry out sintering, the sintering division board plays a protective role to the surface of sheet material blank, can prevent the adhesion of sheet material blank effectively, can not exert an influence to sheet material blank surface quality simultaneously.This division board can be reused, and division board uses back (after being sintering), the organic matter volatilization, and the oxide powder particle will come off, and the metallic plate of recovery can be brushed slip again through behind the deashing, makes the sintering division board and reuses.
Embodiment 5
(1) slip preparation: it is 2% the aqueous solution that cellulose is mixed with mass percent concentration, in the aqueous solution for preparing, add alumina powder (or Zirconium oxide powder) then, stir under 70 ℃ of conditions and obtain slip, the addition of alumina powder (or Zirconium oxide powder) is to add 150g in every premium on currency solution;
(2) brush slip: adopt the metallic plate (corrosion resistant plate) of surfacing,, make the surface of the complete covered metal plate of slip during coating at slip described in the even coating step of one side (1) of metallic plate;
(3) drying: the metallic plate behind the coating slip in the step (2) is put into baking oven (temperature is controlled between 80 ℃～110 ℃) oven dry, obtain the sintering division board.
The division board that present embodiment is made is that the single face contact is sintered the sheet material blank, plays the division board of buffer action when sintering as bottom and top.During use, division board is placed the bottom and the top of sintering furnace, division board plays a protective role to the surface of sheet material blank, can not exert an influence to sheet material blank surface quality simultaneously.This division board can be reused, and division board uses back (after being sintering), the organic matter volatilization, and the oxide powder particle will come off, and the metallic plate of recovery can be brushed slip again through behind the deashing, makes the sintering division board and reuses.
Embodiment 6
(1) slip preparation: it is 5% the aqueous solution that cellulose is mixed with mass percent concentration, in the aqueous solution for preparing, add Zirconium oxide powder (or alumina powder) then, stir under 100 ℃ of conditions and obtain slip, the addition of Zirconium oxide powder (or alumina powder) is to add 100g in every premium on currency solution;
(2) brush slip: adopt the metallic plate (corrosion resistant plate) of surfacing,, make the surface of the complete covered metal plate of slip during coating at slip described in the even coating step in the two sides of metallic plate (1);
(3) drying: the metallic plate behind the coating slip in the step (2) is put into baking oven (temperature is controlled between 80 ℃～110 ℃) oven dry, obtain the sintering division board.
The division board that present embodiment is made is that the two sides contact is sintered the sheet material blank, and conduct is sintered the division board that plays buffer action between the sheet material blank when sintering.During use, sheet material blank and sintering division board placed at interval carry out sintering, the sintering division board plays a protective role to the surface of sheet material blank, can prevent the adhesion of sheet material blank effectively, can not exert an influence to sheet material blank surface quality simultaneously.This division board can be reused, and division board uses back (after being sintering), the organic matter volatilization, and the oxide powder particle will come off, and the metallic plate of recovery can be brushed slip again through behind the deashing, makes the sintering division board and reuses.
The above; it only is preferred embodiment of the present invention; be not that the present invention is done any restriction, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection domain of technical solution of the present invention according to the invention technical spirit.
Claims (3)
1. the preparation method of a sintering division board is characterized in that, this method may further comprise the steps:
(1) slip preparation: it is 2%～10% the aqueous solution that polyvinyl alcohol or cellulose are mixed with mass percent concentration, adds metal oxide powder then in the aqueous solution for preparing, and obtains slip stirring below 100 ℃;
(2) brush slip: adopt the metallic plate of surfacing,, make the surface of the complete covered metal plate of slip during coating at slip described in the even coating step of the one or both sides of metallic plate (1);
(3) drying: the metallic plate behind the coating slip in the step (2) is put into baking oven dry, obtain the sintering division board.
2. the preparation method of a kind of sintering division board according to claim 1 is characterized in that, the addition of metal oxide powder described in the step (1) is to add 50g～150g metal oxide powder in every premium on currency solution.
3. the preparation method of a kind of sintering division board according to claim 1 is characterized in that, metal oxide powder is alumina powder or Zirconium oxide powder described in the step (1).
Priority Applications (1)
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| CN 201110184110 CN102274820B (en) | 2011-07-04 | 2011-07-04 | Manufacturing method of isolation board for sintering |
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| CN 201110184110 CN102274820B (en) | 2011-07-04 | 2011-07-04 | Manufacturing method of isolation board for sintering |
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| CN102274820B CN102274820B (en) | 2013-08-21 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105215356A (en) * | 2015-11-20 | 2016-01-06 | 绵阳德华磁材有限公司 | Samarium cobalt permanent magnet body blank multi-layer sintering method |
| CN106495743A (en) * | 2016-09-30 | 2017-03-15 | 东莞信柏结构陶瓷股份有限公司 | Ceramic fingerprint piece preprocess method and the preparation method of ceramic fingerprint piece |
| CN112259381A (en) * | 2020-10-01 | 2021-01-22 | 桂林理工大学 | Preparation and application of non-woven multifunctional diaphragm |
| CN114335586A (en) * | 2022-01-04 | 2022-04-12 | 苏州华清京昆新能源科技有限公司 | Method for improving flatness of product after sintering of semi-cell isolation layer |
| CN114873999A (en) * | 2022-04-15 | 2022-08-09 | 常熟佳合显示科技有限公司 | Heat treatment method of ceramic material and demoulding paper for heat treatment of ceramic material |
| CN114951653A (en) * | 2022-05-26 | 2022-08-30 | 南京泉峰汽车精密技术股份有限公司 | Degreasing and sintering process for thin-sheet spiral-structure MIM (metal injection molding) part |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105215356A (en) * | 2015-11-20 | 2016-01-06 | 绵阳德华磁材有限公司 | Samarium cobalt permanent magnet body blank multi-layer sintering method |
| CN106495743A (en) * | 2016-09-30 | 2017-03-15 | 东莞信柏结构陶瓷股份有限公司 | Ceramic fingerprint piece preprocess method and the preparation method of ceramic fingerprint piece |
| CN106495743B (en) * | 2016-09-30 | 2019-06-21 | 东莞信柏结构陶瓷股份有限公司 | The preparation method of ceramic fingerprint piece preprocess method and ceramic fingerprint piece |
| CN112259381A (en) * | 2020-10-01 | 2021-01-22 | 桂林理工大学 | Preparation and application of non-woven multifunctional diaphragm |
| CN114335586A (en) * | 2022-01-04 | 2022-04-12 | 苏州华清京昆新能源科技有限公司 | Method for improving flatness of product after sintering of semi-cell isolation layer |
| CN114873999A (en) * | 2022-04-15 | 2022-08-09 | 常熟佳合显示科技有限公司 | Heat treatment method of ceramic material and demoulding paper for heat treatment of ceramic material |
| CN114873999B (en) * | 2022-04-15 | 2023-10-27 | 常熟佳合显示科技有限公司 | Heat treatment method of ceramic material and release paper for heat treatment of ceramic material |
| CN114951653A (en) * | 2022-05-26 | 2022-08-30 | 南京泉峰汽车精密技术股份有限公司 | Degreasing and sintering process for thin-sheet spiral-structure MIM (metal injection molding) part |
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| CN102274820B (en) | 2013-08-21 |
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