A kind of manufacturing process of diamond ultra-thin cutting disc

Abstract

The invention discloses a super-thin diamond saw blade and a manufacturing process thereof. The manufacturing process includes the steps: (1) manufacturing a formwork for adsorbing diamonds; (2) sequentially arranging the diamonds on the formwork; (3) bonding the diamonds sequentially arranged on the formwork on an alloy foil to form a thin stock with the sequentially arranged diamonds; (4) overlaying a plurality of thin stocks, and ensuring radial staggered arrangement of the diamonds on two adjacent thin stocks; (5) placing the overlaid thin stocks into a graphite die to perform vacuum hot-pressing sintering to form a super-thin saw blade blank; (6) grinding, thinning and shearing inner circles and outer circles to obtain the super-thin saw blade with the sequentially arranged diamonds. The diamonds are sequentially arranged, the diamonds on the same cutting surface are uniform in stress, tooth breakage caused by excessive local stress is avoided, and the super-thin saw blade with the sequentially arranged diamonds is greatly improved in edge breakage of cut materials as compared with a common super-thin saw blade.

Description

technical field [0001] The invention relates to the field of processing hard and brittle materials, in particular to a diamond ultra-thin cutting blade and a manufacturing process thereof. Background technique [0002] Diamond ultra-thin cutting discs are widely used in precision and fine processing of hard and brittle materials such as semiconductor materials, silicon wafers, glass, ceramics, and electronic packaging materials, such as scribing, grooving, and cutting. Since ultra-thin cutting discs work in an ultra-high-speed environment of 20,000 to 60,000r / min, the processing accuracy of ultra-thin slices is very high, and a slight deviation will cause fragmentation or large chipping of the processed material. For these For expensive hard and brittle materials, the processing cost is greatly increased. At present, the diamond ultra-thin cutting discs widely used in the market mainly include electroplated discs and hot-pressed sintered discs. The cutting discs made by ele...

AI Technical Summary

Problems solved by technology

However, the ultra-thin slices sintered by hot pressing method have the problem of uneven mixing of diamond and matrix powder, resulting in segregation of diamond in the ultra-thin slices, which seriously affects the processing of ultra-thin slices in the high-speed cutting environment. Quality, such as shaking and broken teeth of ultra-thin slices, severe edge chipping of processed materials, etc.

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