Normalizing of defective castings will liminate the acicular and streak cemtentities,therefore failure of the cam shaft has been thus overcome.

 
  • 對有缺陷原坯料進(jìn)行正火處理,消除了針、條狀滲碳體,從而解決凸輪軸的斷裂問(wèn)題。
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