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    矩形管冷拔工藝的改進(jìn)

    Improvement of Rectangular Tube Cold-drawing Process

    • 摘要: 針對(duì)某廠矩形管生產(chǎn)中存在成材率低和模具使用壽命短的問(wèn)題,從理論上分析了廢管產(chǎn)生的原因,并對(duì)原生產(chǎn)工藝進(jìn)行了改進(jìn),將初始冷拔工序改為輥軋工序后,避免了矩形管長(zhǎng)邊抖紋缺陷的產(chǎn)生;同時(shí)還修改了模具形狀,由此提高了模具使用壽命。

       

      Abstract: Addressing the problems relating to low yield and short die service life encountered by a certain rectangular steel tube maker, relevant elements responsible for the high rejection rate are theoretically analyzed, and the existing manufacturing process is modified, involving such actions as changing the initial cold-drawing step into a rolling one to prevent development of trembling defective marks on the long side surface of the tube, and modifying the mandrel shape to enhance its service life.

       

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