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Vitrified bond end face grinding wheel for fine grinding of compressor sliding vane and preparation method thereof

A ceramic bond and compressor technology, which is applied in the direction of grinding/polishing equipment, abrasives, grinding devices, etc., can solve the problems of poor synergistic effect of the bond, so as to avoid the weakening of abrasive performance, facilitate process control, and achieve sphericity Good results

Active Publication Date: 2022-05-17
江苏赛扬精工科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the porosity of the existing grinding wheel and the synergistic effect of the binder are not good, and the fine grinding effect of the double-end grinding disc needs to be improved.

Method used

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  • Vitrified bond end face grinding wheel for fine grinding of compressor sliding vane and preparation method thereof
  • Vitrified bond end face grinding wheel for fine grinding of compressor sliding vane and preparation method thereof
  • Vitrified bond end face grinding wheel for fine grinding of compressor sliding vane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The utility model relates to a vitrified bond end face grinding wheel specially used for precise grinding of compressor sliding vanes, which is composed of a base body, abrasive sheets glued on the grinding wheel base body, and resin glue filling the gaps between the abrasive sheets.

[0029]The preparation method of the above-mentioned vitrified bond end face grinding wheel for fine grinding of the compressor slide vane comprises the following steps:

[0030] (1) Ingredients: Mix the diamond abrasive, white corundum, vitrified bond, pore-forming agent, and temporary binder (polyvinyl alcohol solution) in the prescribed amount and pass through a 100-mesh sieve to obtain a mixed raw material powder;

[0031] (2) Cold press forming: the mixed raw material obtained in step (1) is subjected to fixed mold cold press forming to obtain a green body; the pressure of cold press forming is 20MPa, and the time is 3s;

[0032] (3) Sintering molding: Place the grinding wheel blank f...

Embodiment 2

[0051] The SiO of Example 1 2 -Y 2 o 3 -Al 2 o 3 The binder is changed as follows:

[0052] SiO 2 45%, Al 2 o 3 15%, ZrO 2 8%, Bi 2 o 3 10%, P 2 o 5 0.5%, Y 2 o 3 for the margin.

[0053] All the other remains the same, the obtained emery wheel carries out the same processing of embodiment 1, and the single processing time is 40s, which is slightly inferior to that of embodiment 1; the good product rate is 100%, and the service life is stable and can reach more than 1,000,000 pieces.

Embodiment 3

[0055] On the basis of embodiment one, the raw material composition of raw material powder: diamond 45%, SiO 2 -Y 2 o 3 -Al 2 o 3 20% binder, 30% white corundum, 2% pore-forming agent, 3% temporary adhesive.

[0056]The rest remain the same, and the obtained grinding wheel is processed in the same way as in Example 1. The difference in flatness and parallelism of the 72 slides on the entire disk can reach within 0.002mm, and the difference in flatness and parallelism of a single slide can reach within 0.001mm. , The trimming interval can be 33 discs, which is slightly inferior to that of Embodiment 1; the yield rate is 100%, and the life stability can be more than 1 million pieces.

[0057] The vitrified bonded double-end grinding disc prepared in this implementation example can be used to process stainless steel and high-speed steel slides, which can meet the processing requirements of fine grinding, and the processing efficiency, the precision of the processed workpiece ...

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Abstract

The invention discloses a special vitrified bond end face grinding wheel for precise grinding of compressor sliding vanes and a preparation method, using an aluminosilicate bond and adding ZrO 2 The glass network structure greatly improves the strength and holding force of the binder, and improves the life of the grinding wheel; at the same time, a small amount of rare earth oxide is added to increase the wetting performance of the binder, and at the same time, it also reduces the sintering temperature to achieve low-temperature sintering, which is convenient for mass production process control; Microspheres are used as a pore-forming agent to prepare a vitrified bonded end face grinding wheel for the fine grinding of compressor sliding vanes. It is easy to operate, convenient for mass production, easy to sinter and discharge without residue, and a high porosity can be obtained by adding grinding wheel raw materials at a lower mass percentage. The abrasive layer has uniform pore size and approximately circular shape, which can meet the high-precision finishing requirements of the workpiece. The double-end grinding wheel of the invention can realize the dimensional accuracy and surface smoothness requirements required by the finishing process.

Description

technical field [0001] The invention belongs to the field of superhard abrasive tool manufacturing, and in particular relates to a special vitrified bond end face grinding wheel for precise grinding of compressor sliding vanes and a preparation method thereof. Background technique [0002] The double-end grinding wheel can process two planes of the workpiece at the same time, with high processing efficiency, wide application range and cost saving, which endows the double-end grinding wheel with broad application prospects. It has been used in automobiles, electronics, air conditioners, aerospace, semiconductors, tools , magnetic materials and other industries have been well applied. End grinding wheels are mainly divided into resin bond end grinding wheels, vitrified bond grinding wheels, and metal bond grinding wheels. The resin bonded grinding wheel has good self-sharpening and sharpness, but the short life is the fatal weakness of the resin bonded grinding wheel. Metal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/18B24D3/34B24D18/00
CPCB24D3/18B24D3/346B24D3/342B24D18/0072
Inventor 薛萍刘振波陈卫东杨菲
Owner 江苏赛扬精工科技有限责任公司
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