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電磁連續(xù)鑄造法制備高速鋼復(fù)合軋輥
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國家高技術(shù)研究計劃項目 (2003AA331050)；國家自然科學基金 (200809123)


High Speed Steel Composite Roll Manufactured by Electromagnetism Continuous Casting
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    摘要:

    進行了高速鋼復(fù)合軋輥的電磁連續(xù)鑄造實驗，在工藝參數(shù)匹配得當?shù)那闆r下，制備出了外觀形狀規(guī)整、振痕輕微，內(nèi)部組織致密，結(jié)合面質(zhì)量良好的輥坯。分析結(jié)果表明，輥坯從外到內(nèi)依次為激冷凝固層、枝狀晶區(qū)、界面結(jié)合區(qū)和輥芯金屬區(qū)。外層高速鋼主要是馬氏體+貝氏體+殘余奧氏體+合金碳化物組織，其中的共晶碳化物呈迷宮狀、短條狀和粒狀，輥芯為珠光體+沿晶界析出的少量鐵素體，晶粒細小。雙金屬復(fù)合界面的結(jié)構(gòu)主要由擴散層、激冷凝固層和柱狀晶區(qū)組成

    Abstract:

    A high speed steel composite roll billet which has not only favorable interface quality of outer shell and core material and regular outer shape, but also shallow oscillation marks and compact microstructure was manufactured by electromagnetism continuous casting for cladding method. When the relations of the technique parameters are proper. The results indicate that the microstructure of the roll billet is composed of chilled solidified layer, dendrite zone, interfacial zone of bimetal and core material zone. The microstructures of the outer shell material include martensite, bainite, residual austenite and some small labyrinth-shape, small-short lath-shape, or dollop-shape eutectic carbides. The microstructure of the core material is slice-shape pearlite and a little ferrite along boundary of cells. The interface region microstructure of bimetallic composite roll consists of diffusion region, chilled solidified layer and columnar grain region

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馮明杰,王恩剛,張興武,赫冀成.電磁連續(xù)鑄造法制備高速鋼復(fù)合軋輥[J].稀有金屬材料與工程,2012,41(8):1487~1490.[Feng Mingjie, Wang Engang, Zhang Xingwu, He Jicheng. High Speed Steel Composite Roll Manufactured by Electromagnetism Continuous Casting[J]. Rare Metal Materials and Engineering,2012,41(8):1487~1490.]
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  • 收稿日期:2011-08-06
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