Conductive resin binder grinding wheel and preparation technology thereof

A bonding agent and grinding wheel technology, which is applied in the direction of bonding grinding wheels, manufacturing tools, metal processing equipment, etc., can solve the problems of high grinding processing costs, difficult to solve high-precision processing of workpieces, poor repair dimensional accuracy, etc., to achieve good grinding Sharpened effect

Active Publication Date: 2020-03-24
ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the common processes in the market are corundum grinding wheels, which are limited by the performance of the corundum grinding wheel itself, and it is difficult to meet the requirements of large-volume, excellent dimensional stability, and high-efficiency grinding.
In terms of CBN grinding wheels, the invention patent CN 105710795 B discloses a preparation method of CBN electroforming grinding wheels for high-precision gear forming grinding. The grinding cost of the working face is high, which greatly increases the grinding cost of gears, hydraulic fixture channels and bearing ring channel grooves
However, the resin CBN grinding wheel, which is maturely used in the end face and surface grinding process, is difficult to solve the above workpiece problems due to the low precision control and repairability of the special-shaped surface, and the poor repair dimensional accuracy of the concave and arc surface. High-precision machining problems

Method used

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  • Conductive resin binder grinding wheel and preparation technology thereof
  • Conductive resin binder grinding wheel and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 4

[0032] Embodiments 1 to 4 preferably adopt the following raw materials:

[0033] PF-2893A phenolic resin (15-35μm) purchased by Shandong Shengquan Group Co., Ltd.;

[0034] ABN660 type CBN abrasive (200 / 230) purchased by British De Beers company;

[0035] Ultrafine cobalt powder (average 2μm) purchased from Eurotungstene, France;

[0036] Baige Group Co., Ltd. purchased white corundum powder (W5);

[0037] The silane coupling agent (A171) purchased by Fangzhou (Fogang) Chemical Materials Co., Ltd.

[0038] Embodiments 1 to 4 all adopt the following grinding wheel manufacturing process, and the concrete steps are as follows:

[0039] (1) Mix the silane coupling agent with methanol at a weight ratio of 1:20 and keep stirring evenly at 70°C to make a wetting agent;

[0040] (2) Mix the CBN abrasive and the wetting agent prepared in step (1) evenly in a weight ratio of 100:1, and then dry at 70°C to constant weight;

[0041](3) Mix the cobalt powder and the wetting agent prep...

Embodiment 1

[0055] The raw material ratio is as follows: phenolic resin powder 50g, ABN660 abrasive 14g, superfine cobalt powder 19g, white corundum micropowder 14g, coupling agent 3g; using the above process to prepare a conductive resin bond grinding wheel, after testing, Grinding wheel resistivity 3.22×10 6 Ω·cm, the accuracy of the special-shaped arc is 0.100mm, and the workpiece is burned and the wear resistance is poor during grinding.

Embodiment 2

[0057] 13 g of phenolic resin powder, 40 g of ABN660 abrasive, 22 g of superfine cobalt powder, 20 g of white corundum micropowder, and 5 g of coupling agent; the conductive resin bond grinding wheel was prepared by the above process, and the resistivity of the grinding wheel was 1.86 after testing. ×10 5 Ω·cm, the accuracy of the special-shaped arc is 0.069mm, the grinding wheel has good sharpness during grinding, and occasionally the structure of the grinding wheel peels off, etc., and the wear resistance is good.

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Abstract

The invention discloses a conductive resin binder grinding wheel based on the using requirement and manufacturing method of a resin binder CBN grinding wheel. The conductive resin binder grinding wheel is prepared from the following raw materials in percent by weight: 10-50% of phenolic resin powder, 19-45% of cobalt powder, 14-34% of white corundum micro powder, 1-5% of a silane coupling agent and the balance of CBN grinding material. Compared with an electroforming CBN grinding wheel, the conductive resin binder grinding wheel has the greatly improved advantages in processing cost and size stability; and compared with a common resin binder grinding wheel, the conductive resin binder grinding wheel has the efficient and high-precision processing advantage in special-shaped working face processing to meet the efficient and high-precision processing requirement of a bearing ferrule channel groove, a precise hydraulic clamp channel, a quenched gear and the like.

Description

technical field [0001] The invention belongs to the technical field of CBN grinding wheels, and in particular relates to a conductive resin bond grinding wheel and a preparation process thereof. Background technique [0002] Resin bond CBN grinding wheel is suitable for grinding metal materials for engineering assembly such as bearing steel, die steel, cast iron, high-speed steel, stainless steel, etc. At present, the resin CBN grinding wheel has been maturely used in the grinding of stainless steel and high-speed steel materials in the refrigeration field, and the end face grinding process of the bearing ring has gradually changed from corundum grinding wheel to resin CBN grinding wheel, but the groove groove grinding of the ring still remains Mostly done by corundum grinding wheel. The reason is that the corundum grinding wheel has low strength and is easy to achieve profiling. Although the resin CBN grinding wheel has good sharpness and wear resistance, it is more diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/28B24D3/34B24D18/00B24D7/06B24D5/06
CPCB24D3/285B24D3/34B24D3/344B24D5/06B24D7/06B24D18/0009B24D18/009
Inventor 张高亮史林峰赵延军刘超
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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