Paper number 203
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DEVELOPMENT OF THE LOW COST FRM PISTON FOR DIESEL ENGINE |
Sung-chul Kim1, Jun-su Kim2, and Tae-won Lim3
1,2,3 Material research team, Advanced Research Group, Hyundai Motor Company
San 1-1, Mabook-Ri, Kusung-Myun, Yongin-Shi, Kyunggi-Do, 449-910, Korea
| Summary | To develop a cost effective and better performance FRM piston, metal matrix composites reinforced with HTZ(High Temperature Zirconia) ceramic fiber were fabricated by a modified die casting process. Mechanical properties and wear resistance of composites were characterized to find out the effect of composite fabrication conditions, preform sintering temperature and the fiber volume fraction. The HTZ FRM showed tensile and fracture strengths very close to those of the matrix alloy, A336 and less wear volume than the Ni-resist cast iron and other types of composites. Based on the test results, proto type piston was made by the modified squeeze-die casting process and its durability was investigated with the engine dynamometer. The engine test results show that composites with HTZ fiber fabricated by the modified squeeze-die casting can be applied to the cost-effective piston for diesel engine. |
Keywords | FRM piston, HTZ fiber, modified die casting. |