The cold head steel bar which is composed of ferrite, pearlite and granular bainite was produced by controlled rolling and cooling.

 
  • 摘要鉚螺鋼經(jīng)棒材軋機控軋控冷軋成棒材,獲得具有鐵素體、珠光體和粒狀貝氏體的混合組織,冷鐓成螺栓后進(jìn)行產(chǎn)品檢驗。
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