灰铁连体缸盖漏水缺陷的原因分析与改进措施  

Reason analysis and improvement measures of leakage defect of gray iron cylinder head

作　　者：季托 王超 伍启华 刘立强 张其昌 JI Tuo;WANG Chao;WU Qihua;LIU Liqiang;ZHANG Qichang(Weichai Power(Weifang)Casting&Forging Co.,Ltd.,Weifang 261061,Shandong China)

机构地区：[1]潍柴动力(潍坊)铸锻有限公司

出　　处：《中国铸造装备与技术》2019年第5期36-39,共4页China Foundry Machinery & Technology

摘　　要：在减少灰铸铁缩松缺陷、降低气缸盖漏水率方面,常用工艺手段主要有调整铁水成分、增设冒口、添置冷铁、优化浇注系统、涂覆激冷涂料等。介绍了在解决本公司Y系列灰铸铁连体气缸盖漏水问题中,设计专用内冷铁、降低碳当量以及优化孕育方式,使漏水率大幅降低。同时针对漏水缺陷探究了其他措施,如刷涂碲涂料以加速局部冷却、改进浇冒系统增加补缩途径等。The measures of solving the leakage defects of Y series cylinder head,including designing special inner chill iron,reducing CE and optimizing nucleating mode,have been introduced in the text.The leakage rate has been greatly reduced.Meanwhile,aiming at the leakage defects,the other solutions has been explored,such as adopting tellurium-based coating to accelerate spot cooling and optimizing the gating system to strengthen feeding.

关 键 词：内冷铁 气缸盖 缩松 漏水 热节 

分 类 号：TG245[金属学及工艺—铸造]