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離心鑄造鈦合金熔體補(bǔ)縮過程滲流流量及相似準(zhǔn)則
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國家自然科學(xué)基金重點(diǎn)項(xiàng)目（50434030）


Infiltration Flux and Similarity Criterion during Centrifugal Casting Titanium Alloy Melts Feeding
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    摘要:

    對離心力場下鈦合金熔體補(bǔ)縮過程中滲流流量公式進(jìn)行理論推導(dǎo)，并對滲流流動機(jī)制進(jìn)行分析，同時依據(jù)滲流流量公式和相似物理模擬理論，提出離心力場下物理模擬鈦合金熔體補(bǔ)縮滲流流動時的相似準(zhǔn)則。研究表明：離心力場下鈦合金熔體補(bǔ)縮過程中的滲流流量公式，可根據(jù)雷諾數(shù)分為4個階段進(jìn)行推導(dǎo)：低速滲流、達(dá)西滲流、過渡區(qū)滲流以及高速區(qū)滲流，4個階段的補(bǔ)縮滲流流量均隨著旋轉(zhuǎn)速度和離心半徑的增加而增大，并且模擬流體粘度與鈦合金熔體粘度之比為0.365。

    Abstract:

    The quantitative formula of infiltration flux during titanium alloy melt feeding in centrifugal field was deducted. The infiltration flow mechanism in centrifugal field was analyzed. Based on the formula of infiltration flux and the similar physical simulation theory, the similarity criterion was presented. The results show that, the deduction of the formula of infiltration flux during titanium alloy melt feeding in centrifugal field can be divided into four stages in terms of Reynolds number, that is low-speed infiltration, Darcy infiltration, transient zone infiltration and high-speed infiltration. The feeding infiltration fluxes at four stages increase with increasing of rotation speed and centrifugal radius. The viscosity ratio of the model fluid to the titanium alloy melt is 0.365.

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隋艷偉,李邦盛,劉愛輝,郭景杰,傅恒志.離心鑄造鈦合金熔體補(bǔ)縮過程滲流流量及相似準(zhǔn)則[J].稀有金屬材料與工程,2009,38(4):594~598.[Sui Yanwei, Li Bangsheng, Liu Aihui, Guo Jingjie, Fu Hengzhi. Infiltration Flux and Similarity Criterion during Centrifugal Casting Titanium Alloy Melts Feeding[J]. Rare Metal Materials and Engineering,2009,38(4):594~598.]
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  • 收稿日期:2008-04-29
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