Simulation analysis and optimization of shot blasting for powder forged connecting rod
XU Yong-gang1,2，WAN Jia-ming1,2，GAO Meng1,2
（1. Technical Centre of Great Wall Motor Company Limited， Baoding 071000， China 2. Automotive Engineering Technology Research Center in Hebei Province， Baoding 071000， China）
Abstract：Shot blasting reinforcement technology can improve the fatigue strength and service life of the powder forged connecting rod. Using PROE to establish the solid model of the shot blasting machine， the discrete element method and EDEM simulation were used to analyze the shot blasting motion law under various sub-pill rotational speed， projectile diameter and blasting angle， thus different combination of process parameters were achieved. Combining the orthogonal test method， the process parameters were optimized and the optimal scheme was verified through the test of shot blasting strength and surface coverage. The continuous and steady shot blasting reinforcement technology is determined as the sub-pill rotational speed of 2 800 r / min， the shot blasting angle of[10°]and the projectile diameter of 0.7 mm， the quality and efficiency of shot blasting are effectively improved.
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2018, Vol. 28 
