1990 Fiscal Year Final Research Report Summary
Study of Polishing Mechanism
| Project/Area Number |
01550103
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
機械工作
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| Research Institution | Chiba Institute of Technology |
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Principal Investigator |
TAKAYA Matsufumi Chiba Institute of Technology Engineering Departmemt Professor, 工学部, 教授 (80083905)
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| Project Period (FY) |
1989 – 1990
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| Keywords | Bonded abrasive / Tin bonded stone / Affected layer / Mechanochemical polishing / Surface roughness |
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| Research Abstract |
A cBN grinding stone bonded by sintered tin powder as the matrix has been devoloped. This stone was applied to lapping, and showed a highly improved grinding ability especially for hard and brittle work materials. This paper describes the manufacturing process of the stone and some results of the experiments concerning the stone materials. cBN abrasives are mixed with tin powder and phenol resin powder which is added in order to get strong abrasive retention. This mixture is compacted into a grinding stone by press and then sintered 200^0 for 30 minutes in atmosphere. As the result, the cBN particles are distributed uniformly and bonded firmly in the tin matrix, so that the grinding property of the stone is improved and the dressing becomes relatively easier. The effects of content of the abrasive and the amount of the phenol resin powder are discussed from the mechanical properties of the grinding stone estimated by bending test. It has been found that the content of resin is about 6 wt%. Furthermore, the results of grinding of SKD11 and silicon wafer workpieces showed good surface finish.
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