消失模工艺生产大型离心浇注机铸型.PDFVIP

消失模工艺生产大型离心浇注机铸型 李 伟，张 颢，储文浩 （马鞍山市海天重工科技发展有限公司，安徽 马鞍山 243000） 摘要：介绍了大型离心铸造用金属铸型的结构及技术要求，详细阐述了采用消失模铸造工艺生产该铸件的工艺过程：采 用漏包阶梯式浇注系统，在铸件顶面设置 个尺寸为 的集渣冒口；选用 3 的 板 4 150 mm×150 mm×300 mm 0.015 g/cm EPS 材手工制作模样，采用流涂方法上自制红柱石硅溶胶水基涂料；采用尺寸为1 600 mm×1 600 mm×2 550 mm 的底抽式砂 箱埋砂造型，浇注时砂箱内真空度在-0.05～-0.06 MPa，保压时间30 min，起模后继续抽气冷却30 min。生产结果显示：离 心机铸型内外表面光洁，棱角清晰；机械加工后，内外表面没有发现任何明显铸造缺陷，符合技术要求。 关键词：灰铸铁；离心机铸型；消失模 中图分类号： 文献标识码： 文章编号： （ ） TG25 1 B 1003－8345 2015 06－0050－04 ： DOI 10.3969/j.issn.1003-8345.2015.06.007 LFC Process on Large Centrifugal Casting Machine Mold Production ， ， LI Wei ZHANG Hao CHU Wen-hao （ ， ， ） Maanshan Haitian Heavy Industry Science and Technology Development Co.,Ltd. Maanshan 243000 China ： Abstract Structural and technical requirements of large centrifugal casting metal mold were intrduced. The casting process of LFC was elaborated. Bottom pour ladle step gating system was used and 4 slag risers in the size of 150 mm×150 mm×300 mm were set on the top of castings. Handmade mode was made of 0.015 g/cm3 EPS plate and homemade water-based andalusite sol paint was used. Bottom -open type sand box was used in the size of 1 600 mm ×1 600 mm×2 550 mm. The vacuum was ， controlled between -0.05 ～-0.06 MPa in pouring and then holding for 30 min. After casting the mould was still pumping 30 min for cooling. The results showed that the inside and outside of centrifuge mold was smooth and edges and corners were ， clear. After machining the inner a