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高溫合金葉片類鑄件電磁軟接觸成形過程研究
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TG249.9

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國(guó)家自然科學(xué)基金資助重大項(xiàng)目(59995440)，國(guó)家重點(diǎn)基礎(chǔ)研究發(fā)展規(guī)劃資助項(xiàng)目(G2000067202-2)


Electromagnetic Soft contact Confinement and Directional Solidification of Near net Shape Blade Castings of Superalloys
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    摘要:

    傳統(tǒng)高溫合金葉片類鑄件制備過程中，熔體長(zhǎng)時(shí)間在陶瓷模殼材料中保溫，易受其污染，而借助于交變電磁場(chǎng)與液態(tài)金屬相互作用產(chǎn)生的電磁壓力可使高溫合金呈半懸浮狀態(tài)，減少了熔體與磁模結(jié)晶器的接觸面積和時(shí)間，能盡可能避免污染的產(chǎn)生。將該方法和定向凝固技術(shù)相結(jié)合，提出了1種實(shí)現(xiàn)高溫合金復(fù)雜形狀電磁軟接觸成形的定向凝固工藝，探討了該工藝下不同結(jié)晶器材料、磁化套高度及其所加方位對(duì)線圈中磁感應(yīng)強(qiáng)度的影響，并在實(shí)驗(yàn)室中成功制備出了2種近葉片形狀的高溫合金電磁軟接觸成形的定向凝固樣件。

    Abstract:

    The superalloy melt is easily contaminated by the ceramic mold material because the melt is kept in it for long time for the traditional process. By the new electromagnetic soft contact confinement process, the superalloy melt is half suspended by electromagnetic pressure, so the contacting area and time between melt and magnetic mold decrease. Simultaneously, the contamination is decreased effectively. The new technique combines the electromangetic soft contact confinement with directional solidification process for manufacturing the near net shape turbine blade castings of superalloys. The effects of the magnetic mold material and the height and position of susceptor on the magnetic flux density distribution in the inductor were comprehensively investigated. In the experiment, two near net shape blade castings with directionally solidified microstucture are successfully obtained by the electromagnetic soft contact confinement process.

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李雙明 張豐收 郝啟堂 傅恒志 賈均 郭景杰.高溫合金葉片類鑄件電磁軟接觸成形過程研究[J].稀有金屬材料與工程,2003,(6):443~446.[Li Shuangming, Zhang Fengshou, Hao Qitang, Fu Hengzhi, Jia Jun, Guo Jingjie. Electromagnetic Soft contact Confinement and Directional Solidification of Near net Shape Blade Castings of Superalloys[J]. Rare Metal Materials and Engineering,2003,(6):443~446.]
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  • 最后修改日期:2001-09-03
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