| Title |
Effect of Cooling Rate on Machinability and Mechanical Properties of Free Cutting Brass |
| Authors |
강일구(Il Koo Kang) ; 유연철(Yeon Chul Yoo) |
| Abstract |
The effects of cooling rate on the machinability and other mechanical properties of free cutting brass were examined through sand mold, metal mold and water-cooled metal mold casting respectively. When the cooling rate was rapid, the lead particles were finely dispersed throughout the matrix and the β-phases appeared to be needlelike, when the cooling rate was slow, the lead particles formed themselves into large spheroids mainly along the grain boundaries while the β-phases shaped into plates. The machinability and mechanical properties turned out satisfactory in the case of rapid cooling rate. |