FAILURE MODE APPRAISAL IN INNER LOWER CONTROL ARM AND PUNCH NOSE FAILURE WITH HEAT TREATMENT PROCESS OF TOOL STEEL

MECHANICAL AND MATERIAL SCEINCE

In this paper experimental observation is based upon the empirical study rather than theory. Main objective is to study the effect on hardness of tool steel after heat treatment processes. The materials selected for this process are EN-31, EN-9, OHNS, D-2 and D3. This survey also helps to find out the failure mode appraisal in inner lower control arm and punch with their preventive methods. Fracture surface displays typical ductile fracture, and the outer and inner surface of the part punched off is full of little bowings around which there are many micro cracks caused by the stretch stress under biaxial strain/stress state After this experimental investigation aims to prepare heat treatment performance which is supposed to be very effective tool for defining the objective function.

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