(西北工業(yè)大學(xué)凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室， 西安 710072)
摘 要: 單晶連鑄技術(shù)是一項(xiàng)新型的 Near-net-shape 生產(chǎn)技術(shù)，它可以連續(xù)鑄造無(wú)限長(zhǎng)鏡面金屬單晶線材。作者利用自制的小型單晶連鑄設(shè)備，以工業(yè)純鋁為原料在實(shí)驗(yàn)室內(nèi)進(jìn)行了工藝試驗(yàn)，分析和探討了各主要工藝參數(shù)對(duì)連鑄線材表面質(zhì)量的影響。結(jié)果表明連鑄線材的表面質(zhì)量取決于固液界面的位置，后者受鑄型溫度、冷卻能力、連鑄速度等各主要工藝參數(shù)的影響。只有當(dāng)這些工藝參數(shù)正確地協(xié)調(diào)匹配時(shí)，才能獲得光如鏡面的表面質(zhì)量。
關(guān)鍵字: 連續(xù)鑄造 表面質(zhì)量 工藝參數(shù)
（National Key Laboratory of Solidification Processing
Northwestern Polytechnical University, Xi'an 710072）
Abstract:The technique of continuous casting of single crystal metals (CCSC) is a new near-net-shape producing process, it can continuously produce long single crystal metal wire with very smooth surface like a mirror. A small horizontal CCSC equipment in laboratory has been successfully designed and manufactured. Using this equipment, the technology test of CCSC of industrial pure Al has been completed and a single crystal Al rod with 8 mm in diameter and 8～10 mm in length has been manufactured. The effects of main technology parameters on the surface quality of the CCSC wire were discussed. The results indicated that the surface quality of the CCSC wire is determined by the position of the liquid-solid interface which is effected by the main technology parameters such as mold temperature, cooling capacity and casting speed. Only when these parameters are coordinated, the smooth surface can be obtained.
Key words: continuous casting surface quality technology parameter
