Grinding wheel for grinding difficult-to-machine materials and preparation method

A difficult-to-machine and grinding wheel technology, applied in metal processing equipment, grinding/polishing equipment, grinding devices, etc., can solve the problems of less dressing times, low processing efficiency, high adaptability of difficult-to-machine materials, etc., to achieve the solution of difficult-to-machine , to overcome the effect of serious wear

Active Publication Date: 2022-02-11
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

[0004] The object of the present invention is to overcome the defects of the prior art and provide a grinding wheel for grinding difficult-to-machine materials. The adaptability is high, which solves the technical problems of difficult processing and low processing efficiency of existing similar products

Method used

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  • Grinding wheel for grinding difficult-to-machine materials and preparation method
  • Grinding wheel for grinding difficult-to-machine materials and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A grinding wheel for grinding difficult-to-machine materials, the abrasive layer of which is composed of the following raw materials in parts by mass: 38 parts of mixed abrasive, 6.5 parts of abrasive surface modifier, 40.5 parts of bonding agent, and 15 parts of kyanite fiber. The kyanite fiber has a diameter of 3 microns and a length of 20 microns.

[0021] The preparation method of the above-mentioned grinding wheel for grinding difficult-to-machine materials comprises mixing the mixed abrasive, abrasive surface modifier and kyanite fiber in proportion, adding a binder and mixing to obtain a molding material, which is hot-pressed (the process parameter is : Hot pressing temperature 230°C, hot pressing pressure 10MPa, pressing time 50min), sintering (process parameters: sintering temperature 230°C, sintering time 12h), turning and grinding machine processing and dressing to obtain the finished grinding wheel; the dressing is specifically:

[0022] Dressing method: use...

Embodiment 2

[0024] A grinding wheel for grinding difficult-to-machine materials, the abrasive layer of which is composed of the following raw materials in parts by mass: 30 parts of mixed abrasive, 5 parts of abrasive surface modifier, 35 parts of bonding agent, and 30 parts of kyanite fiber. The kyanite fiber has a diameter of 1 micron and a length of 5 microns.

[0025] The preparation method of above-mentioned difficult-to-machine material grinding wheel, described trimming is specifically as follows, other with reference to embodiment 1:

[0026] Dressing method: use a chromium-molybdenum-niobium alloy ring with a hardness of HRC38 as a dressing tool, the speed of the grinding wheel to be repaired is 1150rpm, and the speed of the dressing tool is 290rpm; The single feed amount is 0.005mm, and the trimming amount is 0.12mm, and the grinding wheel is trimmed and sharpened.

Embodiment 3

[0028] A grinding wheel for grinding difficult-to-machine materials, the abrasive layer of which is composed of the following raw materials in parts by mass: 25 parts of mixed abrasive, 4 parts of abrasive surface modifier, 38 parts of bonding agent, and 33 parts of kyanite fiber. The kyanite fiber has a diameter of 2 microns and a length of 10 microns.

[0029] The preparation method of above-mentioned difficult-to-machine material grinding wheel, described trimming is specifically as follows, other with reference to embodiment 1:

[0030] Dressing method: Use chromium-molybdenum-niobium alloy rods with a hardness of HRC45 as the dressing tool, the speed of the grinding wheel to be repaired is 1440rpm, and the speed of the dressing tool is 480rpm; The single feed amount is 0.005mm, and the trimming amount is 0.10mm, and the grinding wheel is trimmed and sharpened.

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Abstract

The invention relates to a grinding wheel for grinding difficult-to-machine materials. The grinding wheel is mainly composed of, by mass, 25-38 parts of a mixed grinding material, 4-6.5 parts of a grinding material surface modifying agent, 35-42.5 parts of a binding agent and 5-35 parts of kyanite fibers. The grinding wheel is good in sharpness, low in finishing frequency and high in adaptability to difficult-to-machine materials. The technical problem that existing similar products are difficult to machine and low in machining efficiency is solved. In the preparation process of the grinding wheel, a new dressing tool and a new dressing process are adopted to improve the exposure height of a grinding material of the grinding material layer of the grinding wheel and improve the overall dressing effect of the grinding wheel, so that the sharpness of the grinding wheel is improved, the machining efficiency of workpieces is improved, and the technical problem that existing high-temperature alloy, composite ceramic coatings, titanium alloy and other difficult-to-machine materials are difficult to machine is solved.

Description

technical field [0001] The invention belongs to the technical field of superhard abrasive tools and dressing, and in particular relates to a grinding wheel for grinding difficult-to-machine materials and a preparation method thereof. Background technique [0002] Difficult-to-machine materials such as high-temperature alloys, composite ceramic coatings, and titanium alloys usually have the advantages of high strength, corrosion resistance, and excellent thermal stability, and are widely used in important fields such as aerospace and intelligent equipment manufacturing. However, due to the difficult processing of materials, problems such as severe wear of grinding wheels for processing, frequent dressing, and poor surface processing quality of workpieces often occur, resulting in high difficulty in processing such materials and low processing efficiency. These instabilities will also affect the surface quality of workpieces. Stability, residual stress, etc., so it is difficul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24D3/32B24D3/34B24D18/00
CPCB24D3/32B24D3/344B24D18/0009
Inventor 熊华军赵延军张高亮钱罐文叶腾飞刘权威吴武山
Owner ZHENGZHOU RES INST FOR ABRASIVES & GRINDING CO LTD
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