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超低碳深沖鋼卷曲溫度實驗室研究

Laboratory studies on the coiling temperature of ultra-low carbon deep drawing steel

  • 摘要: 利用Gleeble-1500試驗機、X射線衍射儀、金相顯微鏡和透射電鏡等手段,研究了卷曲溫度對一種超低碳深沖鋼顯微組織、納米級析出相和相應冷軋退火板織構的影響,并且獲得了最佳的卷曲溫度.熱軋板中的析出相主要是硫化銅以及硫化銅和硫化錳復合析出物.低溫卷曲時,析出相數量少、尺寸較大且分布稀疏.為獲得較強的有利織構和良好的沖壓性能,實驗鋼卷取溫度應選定在600℃以下.

     

    Abstract: The effects of coiling temperature on the microstructure and nano-scaled precipitates of ultra-low carbon steel with deep drawability, together with the corresponding textures of the annealed cold-rolled sheet, were investigated by Gleeble-1500 hot simulator, X-ray diffraction, optical microscopy and transmission electron microscope. It is found that nano-scaled precipitates in the hotrolled steel sheet are mainly CuS and CuS-MnS. The precipitates are less, coarse, and sparse when the coiling temperature is lower. To obtain a strong favorable texture and a better drawing property, the best coiling temperature should be under 600℃.

     

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