Fracture Analysis for Pitman Shaft of Automotive Steering Gear
The fractographic appearance, microstructure, chemical elements and hardness of the pitman shaft of automotive steering gear were analyzed. The fracture is induced by improper heat treatment and non-taking anti-carburization measures on thread part. Some feasible measures, including copperizing, coating anti-carburization paint and keeping localized manufacture allowance, were proposed for preventing the occurrence of similar fractures.
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
Z. J. Zhou and X. M. Wang, "Fracture Analysis for Pitman Shaft of Automotive Steering Gear", Advanced Materials Research, Vols. 197-198, pp. 1604-1607, 2011