【摘要】 通过对三环链拉伸,冲击的试验,验证正火工艺取代调质工艺,保证晶粒度级别,减少成本,降低劳 动强度,具备市场竞争力。更多还原

【Abstract】 This paper proved that normalizing craft could, act for fef ining craft completely by stretch and impact test of three- loop chain. It could ensure the degree of grain size,decrease cost and lower intensity of work.更多还原