感应加热钢／铝双金属界面的研究.pdfVIP

学兔兔 2009年第2期 铸 造 设 备 与 工 艺 2009正 4Yl FOUNDRY EOUIPMENT AND TECHNOLOGY ADr．2o09 №2 · 试验研究· 感应加热钢／铝双金属界面的研究 张 跃 ，吴 晟 ，吴振卿 (1．南京理工大学泰州科技学院，江苏 泰州 225300；2．郑州大学材料工程学院，河南 郑州 450002) 摘 要：双金属复合铸件外层采用铸造铝合金，内层选取碳素结构铜，采用型内感应加热工艺进行复合。造 型时内层钢套预先放置在砂型中，复合时将包含有钢套的砂型整体放入到感应圈内采用中频感应原理对钢套进 行预热，达到预定温度后浇注并继续进行加热，复合层将基体钢套包覆后停止加热。所得到的双金属复合铸件 结合界面为完全冶金结合。复合层组织为连续分布FeA1 与Fe Al 中间化合物 界面结合强度为76．4 MPa。 关键词：双金属复合；钢／铝；感应加热 中图分类号：TG24 文献标识码：A 文章编号：1004—6178(2009)02—0020—02 Research of Compound Transition of Steel／Aluminum Bimetal Prepared by Induction Heating ZHANG Yue ，W Sheng ，W Zhen-qing (1．Taizhou Institute ofScience and Technology，Nanjing University，Taizhou Jiangsu 225300，Chintz 2．Material Engineering Institute，Zhengzhou University，Zhengzhou Henan 450002，China) Abstract：Bimetal compound casting is prepared by using in-mold induction heating process，in which the casting Muminum al- loy is selected as inner loop and cast steel as outer loop．During molding，the steel bushing was pre-positioned in sand motd，then the sand mold was put in the induction coil for preheating steel bushing．After reaching the predetermined temperature sand mold was poured． Heating was stoped after the steel bushing was coated．A good metallurgical combination at interface of bimetal compound casting was obtained．The compound layer has organizations of continuous FeA13 and Fe2A15．The bonding strength is about 76．4 MPa from tensile-shear test． Key words：bimetal compound，steel／aluminum，induction heating 随着工业技术的发展，新技术、新科技不断被推