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工藝參數(shù)對轉(zhuǎn)子屏蔽套真空熱脹形影響的模擬
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國家重點基礎(chǔ)研究發(fā)展規(guī)劃項目 (“973”計劃) (2009CB7243070)


Modeling Effects of Process Parameters on Vacuum Hot Bulge Forming of Rotor Cans
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    摘要:

    建立了轉(zhuǎn)子屏蔽套真空熱脹形過程的二維軸對稱有限元模型。借助非線性有限元軟件MSC.Marc的二次開發(fā)功能，將Hastelloy C-276合金的蠕變本構(gòu)模型與真空熱脹形過程的有限元模型相結(jié)合，模擬了轉(zhuǎn)子屏蔽套的真空熱脹形過程。計算了真空熱脹形過程中轉(zhuǎn)子屏蔽套和模具內(nèi)部的瞬時溫度場和徑向位移場，預(yù)測了轉(zhuǎn)子屏蔽套的脹形量。研究了模具厚度、保溫時間和保溫溫度等工藝參數(shù)對轉(zhuǎn)子屏蔽套真空熱脹形脹形量的影響。開展了真空熱脹形工藝實驗，模擬結(jié)果與實驗結(jié)果吻合較好

    Abstract:

    A 2-D axisymmetric finite element model of vacuum hot bulge forming of rotor cans was established. With the aid of user subroutine of non-linear finite element software MSC.Marc, the creep constitutive model of Hastelloy C-276 was coupled with the FEM model to simulate the vacuum hot bulge forming process of the rotor can. The transient temperature field and the radius-direction displacement field of the rotor can and the die during vacuum hot bulge forming process were calculated. The bulging dimension of the rotor can was predicted. The effects of process parameters such as die thickness, holding time and holding temperature on the bulging dimension of the rotor can were studied on the basis of the developed model. The vacuum hot bulge forming experiment was conducted. The simulated results are in good agreement with the experimental ones

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朱 智,張立文,顧森東.工藝參數(shù)對轉(zhuǎn)子屏蔽套真空熱脹形影響的模擬[J].稀有金屬材料與工程,2014,43(9):2257~2261.[Zhu Zhi, Zhang Liwen, Gu Sendong. Modeling Effects of Process Parameters on Vacuum Hot Bulge Forming of Rotor Cans[J]. Rare Metal Materials and Engineering,2014,43(9):2257~2261.]
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  • 收稿日期:2013-09-25
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  • 在線發(fā)布日期: 2015-02-25
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