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A kind of porous resin grinding disc and preparation method thereof

A porous resin and grinding disc technology, which is applied in the direction of grinding tools, grinding/polishing equipment, abrasives, etc., can solve the problems of high maintenance requirements, large loss of grinding discs, high cost, etc., and achieve easy transportation and installation, roughness Small, lightweight effect

Active Publication Date: 2022-07-08
湖南圣高机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing metal grinding discs are prone to scratches. At the same time, due to the need to accommodate abrasives and grinding debris, the surface of the disc must be trimmed and grooved regularly. The loss of the grinding disc is large, and the requirements for use and maintenance are high.
Moreover, the grinding waste liquid produced by processing contains heavy metals, and the cost of subsequent harmless treatment is high

Method used

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  • A kind of porous resin grinding disc and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 20g of water (water as pore-forming agent) and 100g of white carbon black to 1800g of polyurethane resin white material (polyether 303), add 200g of curing agent MOCA (3,3'-dichloro-4,4'-dichloromethane) Amino diphenylmethane), stir well with a high-speed mixer, then add 2100g of polyurethane resin black material (PAPI), stir well with a high-speed mixer, and then pour the mixture into a stainless steel mold with a diameter of 610mm, and quickly solidify at room temperature. Porous polyurethane resin disc.

[0027] The obtained porous polyurethane resin disk has a Shore hardness of 70D, and the proportion of pores is 15%.

[0028] A 2-inch sapphire wafer was ground using the porous polyurethane resin disk, and compared with the traditional resin copper disk. The test of the grinding rate uses a plane grinder SK-610Y with a pressure of 300g / cm 2 , the speed is 60rpm. The lapping liquid adopts a polycrystalline diamond lapping liquid with a particle size D50 of 6 μ...

Embodiment 2

[0033] Add 200g of polymer hollow microspheres and 200g of cerium oxide powder to 3600g of epoxy resin, stir well with a high-speed mixer, then add 500g of epoxy resin curing agent T31, stir well with a high-speed mixer, and pour the mixed slurry It was put into a stainless steel mold with a diameter of 610 mm and cured at 60° C. for 24 hours to form a porous epoxy resin disk.

[0034] The obtained porous epoxy resin disk has a Shore hardness of 60D, and the proportion of pores is 60%.

[0035] The porous epoxy resin disc was used to grind the copper sheet and compared with the traditional resin copper disc. The test of the grinding rate uses a plane grinder SK-610Y, the pressure is 200g / cm 2 , the speed is 60rpm. The grinding liquid adopts single crystal diamond grinding liquid with a particle size D50 of 5 μm.

[0036] Grinding Disc Type Grinding rate RR (μm / min) Roughness of copper sheet after grinding (nm) Porous Epoxy Disc 6.2 26 Resin copper ...

Embodiment 3

[0039] Mix 4000g phenolic resin powder, 400g epoxy resin powder, 300g curing agent hexamethylenetetramine, 200g glass hollow microspheres and 50g glass fiber powder evenly, pour it into a metal mold with a diameter of 610mm, and heat it with a press forming. The pressure is 20Mpa, the heating temperature is 180°C, and the heating and pressure curing is performed for 2 hours to form a porous mixed resin disc.

[0040] The obtained porous mixed resin disk had a Shore hardness of 90 D, and the proportion of pores was 5%.

[0041] The stainless steel sheet was ground by the porous mixed resin disc, and compared with the traditional resin iron disc. The test of the grinding rate uses a plane grinder SK-610Y with a pressure of 300g / cm 2 , the speed is 60rpm. The grinding liquid adopts single crystal diamond grinding liquid with a particle size D50 of 3 μm.

[0042] Grinding Disc Type Grinding rate RR (μm / min) Roughness of copper sheet after grinding (nm) Porou...

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Abstract

The invention discloses a porous resin grinding disc and a preparation method thereof. The grinding disc is prepared from the following components: resin: 30-95 parts; pore-forming agent: 0.1-15 parts; curing agent: 0.1-20 parts; filler: 0.1-50 parts. The grinding disc has a Shore hardness of 60-90 D, has a porous structure, and the area occupied by the pores is 5%-60% of the entire grinding surface. The preparation method of the porous resin grinding disc includes the following steps: mixing the resin, pore-forming agent, curing agent and filler uniformly according to a certain proportion, pouring the mixture into a metal mold, curing and molding, and turning out the mold to obtain a porous resin disk finished product. The porous resin grinding disc of the present invention can reduce scratches and improve the surface quality of the workpiece to be ground while maintaining a high grinding rate.

Description

technical field [0001] The invention relates to a porous resin grinding disc and a preparation method thereof, belonging to the technical field of precision plane grinding and polishing. Background technique [0002] In the plane processing technology of metals, ceramics, crystals and glass, the grinding disc plays a vital role in the grinding and polishing process as the carrier of the abrasive. At present, various metal grinding discs are mainly used for plane grinding, such as copper discs, iron discs, tin discs, resin copper discs or resin iron discs. [0003] Existing metal grinding discs are prone to scratches, and at the same time, due to the need to accommodate abrasives and abrasive debris, the disc surface needs to be trimmed and grooved regularly. In addition, the grinding waste liquid produced by processing contains heavy metals, and the cost of subsequent harmless treatment is high. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B37/14B24D3/32B24D3/34B24D18/00
CPCB24B37/14B24D3/32B24D3/344B24D3/34B24D18/0009
Inventor 罗惠胡晓刚马俪芳
Owner 湖南圣高机械科技有限公司
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