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離心場(chǎng)對(duì)鈦合金鑄造性能的影響
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河南理工大學(xué)博士啟動(dòng)基金(B2008-27)


Effect of Centrifugal Field on Casting Characteristic of Titanium Alloy
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    摘要:

    在立式離心場(chǎng)下和重力場(chǎng)下對(duì)石墨型鈦合金鑄件在鑄造過(guò)程的充填及凝固情況進(jìn)行研究。結(jié)果表明：在立式離心場(chǎng)下鈦合金熔體的鑄造性能好，其流動(dòng)性和充填性得到很大改善；尤其對(duì)3 mm壁厚薄壁件，在重力場(chǎng)下由于充填阻力大于充填力，合金熔體無(wú)法完全充填鑄型，而在離心場(chǎng)下可以實(shí)現(xiàn)全部充填，且最小壁厚可達(dá)到0.3 mm。此外，離心場(chǎng)下由于離心力和科氏力的共同作用，鑄件的缺陷明顯減少，且隨鑄型轉(zhuǎn)速的增加而不斷減小

    Abstract:

    The filling and solidification process of titanium alloy melt in graphite mold was investigated in vertical centrifugal field and in gravity field, respectively. The results show that the process in the former is better than that in the later. The flowability and the filling ability of the melt in the centrifugal field are much improved, it is especially favorable for producing the castings with 3 mm thin wall. The mold can not be fully filled by the melt in the gravity field, in such case the filing resistance is larger than filling force. The full filling can be realized in the centrifugal field. By which the minimum wall thickness of a casting can reach 0.3 mm In addition, under the common action of Coriolis force and centrifugal force, the defects of titanium alloy casting decreases with increasing of rotational velocity

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歷長(zhǎng)云,崔紅保,王狂飛,米國(guó)發(fā),吳士平,郭景杰,傅恒志.離心場(chǎng)對(duì)鈦合金鑄造性能的影響[J].稀有金屬材料與工程,2009,38(5):803~806.[Li Changyun, Cui Hongbao, Wang Kuangfei, Mi Guofa, Wu Shiping, Guo Jingjie, Fu Hengzhi. Effect of Centrifugal Field on Casting Characteristic of Titanium Alloy[J]. Rare Metal Materials and Engineering,2009,38(5):803~806.]
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  • 收稿日期:2008-05-19
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