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    中頻感應(yīng)加熱頂推式熱擴(kuò)管工藝分析

    Analysis of Intermediate Frequency Induction Heating and Plug Pushing Hot Expanding Process

    • 摘要: 簡述3種熱擴(kuò)管工藝的特點(diǎn)、優(yōu)勢；分析中頻感應(yīng)加熱頂推式熱擴(kuò)管工藝參數(shù)對擴(kuò)管變形的影響，并指出擴(kuò)管時(shí)應(yīng)注意的問題。分析認(rèn)為：中頻感應(yīng)加熱頂推式熱擴(kuò)管工藝雖然對整支管坯非同時(shí)進(jìn)行整體加熱，但與整體加熱擴(kuò)管工藝相比，加熱方式對擴(kuò)管變形沒有明顯影響；應(yīng)加強(qiáng)管坯質(zhì)量和變形區(qū)管坯溫度的控制，選擇合理變形參數(shù)，擴(kuò)制后進(jìn)行整體熱處理，并加強(qiáng)成品鋼管的質(zhì)量檢驗(yàn)。

       

      Abstract: Briefed are the characteristics and advantages of three types of hot expanding processes.The influence of the intermediate frequency induction heating and plug pushing hot expanding process on the expanded pipe is analyzed, and notable problems are pointed out.The analysis leads to the following conclusions.A blank is not simultaneously heated on its entire length in an intermediate frequency induction heating and plug pushing hot expanding process, but, comparing to the overall heating and hot expanding process, this heating method has no obvious influence on pipe deformation.The quality of blanks as well as blank temperatures at deforming areas shall be well controlled.Reasonable deforming parameters shall be chosen.Pipes after expanding shall receive overall heat treatment.Quality inspection on finished pipes shall be enhanced.

       

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