Surface Finishing Theory and New Technology by Shengqiang Yang & Wenhui Li

Author:Shengqiang Yang & Wenhui Li
Language: eng
Format: epub
Publisher: Springer Berlin Heidelberg, Berlin, Heidelberg

From Fig. 3.17, the magnetic abrasive particles are prepared when the holding time is the same, and the sintering temperatures 1210, 1200, 1180 °C should have better finishing effects; The magnetic abrasive particles that prepared at 1210 °C have slightly better finishing effects than at the other temperature. It is also discovered in the experiment: In the selected parameter range, the higher the sintering temperature, the longer the holding time; the fewer pores of green body, the better abrasive phase which is wrapped by the magnetic medium phase, the higher bonding strength of both, and the longer service life of magnetic abrasive particles.

According to the test results, in addition to the characteristic parameters of magnetic abrasive particles, sintering temperature, sintering time, and holding time are the key factors to determine sintering effects. In general, these factors should be chosen as sintering temperature 1180–1210 °C, sintering time 5–6 h, holding time 2–3 h. Principles that should be followed are the sintering temperature: being higher, the sintering time increasing, and the holding time should be shorten correspondingly; the sintering temperature is lower, and the sintering time and holding time can be increased correspondingly.2.Hot-pressing sintering method

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