Process Design and Improvement in Cold Forging Process of a Inner Pulley for Automobile Air Conditioner

자동차 냉방기용 풀리의 냉간 단조 공정 설계 및 개선에 관한 연구

Forging of an inner pulley for compressor clutch assembly of car air conditioner is investigated in this study. In cold forging of inner pulley, the design requirements are to keep the same height of the inner rib and the outer one, and to make uniform the hardness distribution in the forged product. Using the rigid-plastic finite element simulation, we design the optimal process conditions, which has a performing operation. The forged pulley is investigated by checking the hardness distribution and it is noted that the distribution has improved to be even and high enough for industrial application.