Hot-pressed high-strength ceramic cbn grinding wheel for grinding aerospace titanium alloy and preparation method thereof

An aerospace and titanium alloy technology, applied in the field of grinding, can solve the problems of reducing the content of binders and poor fluidity of high-strength binders, and achieve the effects of improving edge rate, sharpness, and service life

Active Publication Date: 2021-09-03
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

The grinding wheel uses a higher-strength bond, which can increase the service life of the grinding wheel, and at the same time reduce the content of the bond by 20-25%, greatly improving the edge rate of the abrasive wheel and increasing the sharpness of the grinding wheel; on the other hand, using hot pressing process , to solve the problem of poor fluidity of high-strength binder, to make the contact force between CBN and binder larger, so as to ensure the holding force of the binder on the CBN abrasive during sintering

Method used

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  • Hot-pressed high-strength ceramic cbn grinding wheel for grinding aerospace titanium alloy and preparation method thereof
  • Hot-pressed high-strength ceramic cbn grinding wheel for grinding aerospace titanium alloy and preparation method thereof
  • Hot-pressed high-strength ceramic cbn grinding wheel for grinding aerospace titanium alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] The steel matrix of the grinding wheel is conventionally heat-treated before use, and the required shape is fine-turned for the bonding of ceramic CBN grinding wheel blocks, which is a conventional method.

[0035] The ceramic CBN grinding wheel block is prepared from CBN abrasive, vitrified bond, white corundum and phenolic resin powder. Concrete preparation process is as follows:

[0036] (1) Weigh silicon dioxide, borax, aluminum oxide, titanium dioxide, and barium oxide according to the weight percentage of 53:27:6:10:4, and mix them well; then put the mixture into a frit furnace at 1550 °C Carry out conventional smelting; then water-cool the smelted mixture and grind it into powder with a ball mill; finally dry it through a 60-mesh sieve to obtain the required vitrified bond;

[0037] (2) Weigh the CBN abrasive, the above vitrified bond, white corundum and phenolic resin powder according to the weight percentage of 73:12:10:5, and mix them thoroughly; the specific...

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Abstract

The invention discloses a hot-pressed high-strength ceramic CBN grinding wheel for grinding aerospace titanium alloy and a preparation method thereof, which is composed of a steel substrate and a CBN abrasive layer. Among them, the CBN abrasive layer adhesive is a high-strength vitrified bond. Compared with the existing vitrified bond, the dosage can be reduced by 20‑25%, which can effectively improve the abrasive edge rate of the grinding wheel and increase the sharpness of the grinding wheel. At the same time, the grinding wheel adopts hot pressing The technology makes up for the shortcoming of the poor fluidity of the high-strength binder, and makes the contact force between CBN and the binder stronger, so as to ensure the holding force of the binder on the CBN abrasive during sintering. Compared with the general ceramic CBN grinding wheel, the grinding wheel of the present invention has higher efficiency and longer service life when grinding titanium alloy workpieces for aerospace.

Description

technical field [0001] The invention belongs to the technical field of grinding, and in particular relates to a hot-pressed high-strength ceramic CBN grinding wheel for grinding titanium alloy special for aerospace. Background technique [0002] Titanium alloy is a composite metal composed of titanium metal as the basis and adding other elements (such as tin, vanadium, aluminum, niobium and molybdenum, etc.). Titanium alloy has high strength, low density, good mechanical properties, good toughness and corrosion resistance, so it is widely used in various fields, especially in the aerospace industry. However, the processing performance of titanium alloy is poor, the efficiency is low, and the production and processing technology is complicated. Traditionally, the grinding wheel used for grinding titanium alloys uses corundum as the abrasive, which has problems such as low efficiency and poor surface quality of the workpiece. As a new type of superabrasive, cubic boron nitri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24D3/14B24D3/34B24D18/00
CPCB24D3/14B24D3/342B24D3/346B24D18/0009
Inventor 李伟超王媛媛
Owner 江苏赛扬精工科技有限责任公司
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