Vitrified bond cubic boron nitride (CBN) grinding wheel for grinding titanium alloy

Abstract

The invention discloses a vitrified bonded cubic boron nitride (CBN) grinding wheel for grinding titanium alloy, which comprises a basal body, grinding wheel blocks and bonding layers, wherein the grinding wheel blocks comprise the following raw materials in weight percentage: 40-80 percent of cubic boron nitride grinding material, 0-30 percentage of silicon carbide, 14-35 percent of ceramic binder and 6 percent of temporary binder; and the ceramic binder comprises the following raw materials in weight percentage: 15-25 percent of B2O3, 8-15 percent of Al2O3, 46-60 percent of SiO2, 2-8 percent of Li2O, 2-10 percent of Na2O, 2-10 percent of ZnO and 2-10 percent of AlN, and the refractoriness of the ceramic binder is lower than 700 DEG C. The vitrified bound cubic boron nitride grinding wheel can effectively overcome the defects of strong grinding force, high grinding temperature, serious grinding wheel bonding and the like caused during grinding the titanium alloy, and has the advantages of high thermal conductivity, good self-sharpening performance, high grinding efficiency, long service life, low cost and simple process.

Description

technical field [0001] The invention relates to grinding tools, in particular to a vitrified bond cubic boron nitride (CBN) grinding wheel for titanium alloy grinding. Background technique [0002] Titanium alloy has the advantages of low density, high strength (higher strength at room temperature and high temperature), high specific strength, high temperature resistance, good corrosion resistance, matching with composite material structure, high toughness, and non-magnetic. It has been used more and more in many fields such as aviation, aerospace, nuclear energy, ships, weapons, etc., and has become an important strategic metal material. Its application level has become an important indicator to measure the advanced degree of a country's weaponry and reflect a country's military level and military strength. However, for titanium alloys, poor processability and low processing efficiency have become the main reasons hindering its widespread application. [0003] In the earl...

AI Technical Summary

Problems solved by technology

With the development of science and technology and the improvement of product performance, the requirements for dimensional accuracy and surface roughness of titanium alloy parts are getting higher and higher. For example, some aircraft parts must go through the grinding process to meet the requirements, but the grinding process of titanium alloy The performance is very poor, and the main problems in grinding are: large grinding force, high grinding temperature; serious adhesion of the grinding wheel; complex deformation during the grinding process, forming stacked chips; high chemical activity, the surface It is easy to form a hard and brittle surface layer; the grinding quality is not easy to control, etc.

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