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基于響應(yīng)面法的鋁合金間接擠壓鑄造工藝研究
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中北大學(xué) 山西省有色金屬液態(tài)成型工程技術(shù)研究中心,中北大學(xué) 山西省有色金屬液態(tài)成型工程技術(shù)研究中心,中北大學(xué) 山西省有色金屬液態(tài)成型工程技術(shù)研究中心,中北大學(xué) 山西省有色金屬液態(tài)成型工程技術(shù)研究中心,中北大學(xué) 山西省有色金屬液態(tài)成型工程技術(shù)研究中心

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國家科技部國際科技合作項目(2014DFA50320)；國家自然科學(xué)基金(No.51574207,51574206,51204147,51274175)；山西省國際科技合作項目(2013081017、2012081013)


The research of aluminum alloy indirect squeeze casting process based on response surface method
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North University of China,Research Center of Non-Ferrous Metals Liquid Forming Technology of Shanxi Province,North University of China,Research Center of Non-Ferrous Metals Liquid Forming Technology of Shanxi Province,North University of China,Research Center of Non-Ferrous Metals Liquid Forming Technology of Shanxi Province,North University of China,Research Center of Non-Ferrous Metals Liquid Forming Technology of Shanxi Province,North University of China,Research Center of Non-Ferrous Metals Liquid Forming Technology of Shanxi Province

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    摘要:

    為研究間接擠壓鑄造工藝,選取ZL101鋁合金,以孔隙率為指標(biāo),首先通過單因素實(shí)驗(yàn),分析了擠壓壓力、模具溫度與比例系數(shù)3個因素對孔隙率的影響。然后采用Box-Behnken實(shí)驗(yàn)設(shè)計方法來設(shè)計響應(yīng)面實(shí)驗(yàn),建立了間接擠壓鑄造工藝參數(shù)與孔隙率相互關(guān)系的預(yù)測模型,方差分析結(jié)果表明,實(shí)驗(yàn)結(jié)果和數(shù)學(xué)模型擬合良好。通過對各個因素交互作用的響應(yīng)面進(jìn)行分析,得知模具溫度和擠壓壓力對孔隙率的影響存在顯著的交互作用,模具溫度和比例系數(shù)、比例系數(shù)和擠壓壓力對孔隙率的影響不存在顯著的交互作用。通過對環(huán)形件澆注系統(tǒng)的直澆道邊緣部位進(jìn)行金相檢測分析,得知由于壓力的施加,會使已經(jīng)凝固的金屬殼層發(fā)生不均勻的塑性流動。

    Abstract:

    In order to study indirect squeeze casting process, we selected ZL101 aluminum alloy with porosity as indicators and analyzed the effect of process parameters of pressure, die temperature and proportionality factor on porosity. Box-Behnken design of experiment have been developed to design response surface experiment and regression model of the relationship between the indirect squeeze casting process parameters and porosity have been established. ANOVA result shows that the fitting effect of the experimental results and the mathematical model is good. The effect of die temperature and pressure on porosity has certain interaction but the effect of die temperature and proportionality factor or the effect of proportionality factor and pressure on porosity does not exist significant interaction by analyzing response surface of interaction of various factors. Due to the applied pressure, the congealed metal shell will happen uneven plastic flow by metallographic testing analysis of the edge of sprue in gating system parts.

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引用本文

陳利文,侯華,靳玉春,趙宇宏,康永生.基于響應(yīng)面法的鋁合金間接擠壓鑄造工藝研究[J].稀有金屬材料與工程,2018,47(4):1174~1179.[Chen Liwen, Hou Hua, Jin Yuchun, Zhao Yuhong, Kang Yongsheng. The research of aluminum alloy indirect squeeze casting process based on response surface method[J]. Rare Metal Materials and Engineering,2018,47(4):1174~1179.]
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  • 收稿日期:2016-04-13
  • 最后修改日期:2016-06-01
  • 錄用日期:2016-07-15
  • 在線發(fā)布日期: 2018-05-31
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