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Super-hard grinding tool of inorganic and organic composite binder and preparation method of super-hard grinding tool

A composite binder and superhard abrasive technology, which is applied in the direction of grinding/polishing equipment, abrasives, grinding devices, etc., to achieve good mechanical properties, improved wear resistance, and improved bending strength

Active Publication Date: 2015-06-03
珠海泰达砂轮有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are very few studies on organic polymer resins and phosphates at home and abroad, especially the research on a composite adhesive that has both the good adhesion of organic resins and the excellent heat resistance of inorganic adhesives has just begun. There is no public report on its application in superhard abrasive tools

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to volume ratio: 30% phenolic resin powder, 11% aluminum phosphate solution, 17% copper oxide curing agent, α-Al filler 2 o 3 17%, artificial diamond (grain size 230 / 270) 25%.

[0017] Fully wet the artificial diamond abrasive with aluminum phosphate, then mix the curing agent, filler and the wetted artificial diamond abrasive evenly, and finally add phenolic resin and mix evenly; put the evenly mixed material into the mold and place it on the hot press at 180 Hot press molding at ℃ for 40 minutes, the pressing pressure is 10MPa, after the mold is unloaded, put the abrasive tool into the blast drying oven for 2 hours at 60 ℃, 2 hours at 90 ℃, 1.5 hours at 110 ℃, 2.5 hours at 120 ℃, 140 Cure for 1h at 160°C, 1h at 160°C, and 4h at 180°C.

Embodiment 2

[0019] According to volume ratio: polyimide resin powder 40%, aluminum phosphate solution 10%, curing agent copper oxide 10%, filler silicon carbide 15%, cubic boron nitride (particle size 140 / 170) 25%.

[0020] Fully wet the cubic boron nitride abrasive with aluminum phosphate, then mix the curing agent, filler and the wetted abrasive evenly, and finally add polyimide resin powder and mix evenly; put the evenly mixed material into the mold and heat Carry out hot press molding at 230°C for 40min on the press, and the pressing pressure is 15MPa. After unloading the mold, put the abrasive tool into a blast drying oven for 2h at 60°C, 2h at 120°C, 2h at 180°C, and 1h at 200°C. , Cured at 210°C for 1h, and cured at 230°C for 4h.

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PUM

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Abstract

The invention discloses a super-hard grinding tool of an inorganic and organic composite binder and a preparation method of the super-hard grinding tool. The super-hard grinding tool is characterized by being prepared by the following materials in percentage by volume: 10%-30% of super-hard grinding material, 30%-50% of thermosetting resin powder, 8%-12% of phosphate binder, 10%-29% of curing agent and 10%-29% of filler. The preparation method comprises the following steps of carrying out hot press molding after the composite binder and the grinding material are uniformly mixed, and then curing to obtain the super-hard grinding tool of the composite binder. Compared with a super-hard grinding tool of a resin binder, the super-hard grinding tool prepared by the preparation method has higher strength and higher heat resistance, and meanwhile, the super-hard grinding machine has good grinding performance.

Description

technical field [0001] The invention relates to a superhard abrasive tool with an inorganic and organic composite binder and a preparation method thereof. Background technique [0002] Compared with vitrified bonded abrasives and metal bonded abrasives, superhard material resin bonded abrasives do not have high requirements on abrasives, so diamonds with poorer crystal grades can be used as abrasives, and they have Good self-sharpening, with the advantages of simple manufacturing process and low cost, and suitable for processing various materials such as hard alloy, glass, ceramics, and stone. [0003] Phosphate is an important inorganic polymer material, which has the characteristics of both metal and ceramic materials, and has good high temperature chemical stability. At present, there are very few studies on organic polymer resins and phosphates at home and abroad, especially the research on a composite adhesive that has both the good adhesion of organic resins and the e...

Claims

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Application Information

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IPC IPC(8): B24D3/02B24D3/34B24D18/00
CPCB24D3/02B24D3/342B24D18/0009
Inventor 张琳琪董会娟彭进赵芬芬候永改
Owner 珠海泰达砂轮有限公司
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