铝合金气缸盖和曲轴箱通风道缺陷分析及工艺优化  

Crankcase Ventilation Channel Defects Analysis and Process Optimization of Aluminum Alloy Cylinder Head

作　　者：任泽翔 于越 张守双 唐志泉 刘卓霖 林柏杨 喻浩楠 栗金旗 REN Ze-xiang;YU Yue;ZHANG Shou-shuang;LIU Zhuo-lin;LIN Bai-yang;YU Hao-nan;LI Jin-qi(Non-Ferrous Foundry,FAW Foundry Co.,Ltd.,Changchun 130000,Jilin,China;Foundry Mould&Equipment Plant,FAW Foundry Co.,Ltd.,Changchun 130000,Jilin,China)

机构地区：[1]一汽铸造有限公司有色铸造分公司,吉林长春130000 [2]一汽铸造有限公司铸造模具设备厂,吉林长春130000

出　　处：《铸造》2024年第11期1576-1582,共7页Foundry

摘　　要：针对重力浇注铝合金缸盖曲轴箱通风道缺陷(断芯),采用鱼骨图分析法对缺陷的形成原因进行了分析,对铸造工艺进行了分析和优化。通过优化调整曲轴箱通风道砂芯(Blowby砂芯)与底框砂芯、冒口砂芯的结构以调整砂芯间配合间隙,并通过增加工位器具和增加下芯夹具报警装置等措施,经过生产验证确定了最终铸造工艺方法。消除了曲轴箱通风道缺陷(断芯),提高了铸件质量,降低了废品率。Aiming at the defects(Crushed core) of the crankcase ventilation channel of the gravity-cast aluminum alloy cylinder head,the forming causes of the defects and the casting process were analyzed using fishbone diagram analysis method.By optimizing and adjusting the structures of the crankcase ventilation channel sand core(blowby core),the frame core,and the riser core to adjust the fit gap between the cores,and by adding the working position apparatus and an alarm device for the cores setting tooling,the final casting process methods was determined through production verification.These methods fundamentally eliminated the defects(Crushed core) of crankcase ventilation channel in the cylinder head,improved the casting quality,also reduced the scrap rates.

关 键 词：铝合金 缸盖 曲轴箱强制通风系统PCV 铸造工艺 断芯 鱼骨图 

分 类 号：TG146.2[一般工业技术—材料科学与工程] TG292[金属学及工艺—金属材料]