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變厚度軋制對(duì)AZ31鎂合金板材邊部損傷影響分析
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太原科技大學(xué)重型機(jī)械教育部工程研究中心,太原科技大學(xué)重型機(jī)械教育部工程研究中心,太原科技大學(xué)重型機(jī)械教育部工程研究中心,太原科技大學(xué)重型機(jī)械教育部工程研究中心

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國(guó)家自然科學(xué)基金(51501122),山西省科技創(chuàng)新項(xiàng)目(2015172),太原科技大學(xué)校博士科研啟動(dòng)基金(20142033)


Analysis of variable gauge rolling impact on the edge damage of AZ31 magnesium alloy sheets
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Heavy Machinery Engineering Research Center of Education Ministry,Taiyuan University of Science and Technology,Heavy Machinery Engineering Research Center of Education Ministry,Taiyuan University of Science and Technology,Heavy Machinery Engineering Research Center of Education Ministry,Taiyuan University of Science and Technology,Heavy Machinery Engineering Research Center of Education Ministry,Taiyuan University of Science and Technology

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    摘要:

    本文基于變厚度軋制工藝?yán)碚?利用DEFORM-3D軟件對(duì)AZ31鎂合金板材軋制邊部損傷行為進(jìn)行分析。設(shè)定軋制溫度為350℃,軋輥轉(zhuǎn)速為20r/min,先對(duì)3組試樣進(jìn)行壓下量分別為板厚的37.5%,75%和112.5%立軋預(yù)變形；隨后進(jìn)行小壓下量多道次或大壓下量單道次的平輥軋制。結(jié)果表明：對(duì)鎂合金板采用變厚度軋制工藝能顯著減少其邊部損傷；立輥側(cè)壓量為37.5%時(shí)效果最好,其最大損傷因子為0.35；變厚度軋制工藝更適用于大壓下軋制,當(dāng)立輥側(cè)壓量為75%,平輥壓下量為49%時(shí)最大損傷因子最小,僅為0.126；側(cè)壓量的取值與板厚有關(guān)。

    Abstract:

    This paper investigated the damage behavior of AZ31 magnesium alloy plate by numerical simulation method by finite element software DEFORM, which is based on variable gauge rolling. The rolling temperature of magnesium plate is 350℃,the rolling speed is 20r/min and the lateral pre-deformation by vertical roll are 37.5%,75% and 112.5%, respectively. Then the specimens that have been pre-deformation are rolled by flat roll with multi cycles of small reduction or single cycle with a large deformation. The results showed that the variable gauge rolling process can significantly reduce edge damage of rolled magnesium plate. When vertical roll reduction is 75%, the variable gauge rolling process reach the best, and that the maximum edge damage factor is 0.35. Variable gauge rolling process seems to more suitable for large reduction rolling. The maximum damage factor is only 0.126 when vertical reduction is 75% and flat reduction is 49% were combined to produce magnesium plate. The value of vertical roll reduction was related to the initial thickness of magnesium plate.

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韋建春,黃慶學(xué),黃志權(quán),朱艷春.變厚度軋制對(duì)AZ31鎂合金板材邊部損傷影響分析[J].稀有金屬材料與工程,2018,47(2):652~656.[Wei Jianchun, Huang Qingxue, Huang Zhiquan, Zhu Yanchun. Analysis of variable gauge rolling impact on the edge damage of AZ31 magnesium alloy sheets[J]. Rare Metal Materials and Engineering,2018,47(2):652~656.]
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  • 收稿日期:2015-12-09
  • 最后修改日期:2016-01-07
  • 錄用日期:2016-02-24
  • 在線(xiàn)發(fā)布日期: 2018-03-15
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