船用四联弯管阀箱的砂型铸造工艺  

Sand Mold Casting Process of Marine Quadruple Elbow Valve Box

作　　者：夏久林 杨为勤 XIA Jiu-lin;YANG Wei-qin(Chongqing Creation Vocational College,Yongchuan 402160,Sichuan,China;Wuchang Shipbuliding Industry Co.,Ltd.,Wuhan 430064,Hubei,China)

机构地区：[1]重庆科创职业学院,重庆永川402160 [2]武昌船舶重工集团有限公司,湖北武汉430064

出　　处：《铸造》2022年第10期1311-1313,共3页Foundry

摘　　要：硅黄铜四联弯管阀箱是潜器海水管路系统中的重要阀件,结构复杂,且要承受较高的水压试验,砂型铸造时工艺难度较高,渗漏是要解决的突出问题。介绍了硅黄铜的特性,分析了四联弯管阀箱的结构,给出了相应的工艺设计原则。针对四联弯管阀箱的典型案例,深入讨论了几个问题:外型脱模及砂芯下芯;冒口补缩与冷铁激冷;氧化夹杂的防止;砂芯的支撑定位及气体导出;型芯砂工艺等。有效地避免了四联弯管阀箱渗漏情况,成功地进行了批量生产。Silicon brass quadruple elbow valve box is an important valve in the seawater pipeline system of submarine.It has complex structure and has to bear high hydrostatic test. The process is difficult in sand casting, and the leakage is a prominent problem to be solved. The characteristics of the silicon brass were introduced, the structure of the quadruple elbow valve box was analyzed, and the corresponding process design principles were given. In view of the typical case of the quadruple elbow valve box, several problems were deeply discussed: external mold stripping and sand core setting;riser feeding and chill;prevention of oxidation inclusion;support and positioning of sand core and gas export;core sand process, etc. The leakage of the quadruple elbow valve box was effectively avoided, and the batch production was carried out successfully.

关 键 词：硅黄铜 四联弯管阀箱 砂型铸造 缺陷 

分 类 号：TG291[金属学及工艺—铸造]