铝合金压铸过程中减少长抽芯针变形和偏摆研究  

Reducing Deformation and Deflection of Long Core-pulling Needle in Aluminium Alloy Die Casting

作　　者：李秋旭 孙永明 吴广坚 苏海章 冯东方 Li Qiuxu;Sun Yongming;Wu Guangjian;Su Haizhang;Feng Dongfang(Guangdong Hongtu(Nantong)Die-casting Co.,Ltd.;Guangdong Hongtu Die-casting Co.,Ltd.)

机构地区：[1]广东鸿图南通压铸有限公司,江苏南通226000 [2]广东鸿图科技股份有限公司

出　　处：《特种铸造及有色合金》2022年第3期391-393,共3页Special Casting & Nonferrous Alloys

摘　　要：针对变速箱侧盖深高压油道孔压铸成形过程长抽芯针变形和偏摆问题,研究了压铸工艺、模具结构和抽芯针的材料对其变形和偏摆的影响。结果表明,浇注方案和关键工艺参数选择对减少长抽芯针变形和偏摆非常重要。长抽芯针定位稳定性、针与针套分段式配合结构、高压冷却结构均可降低长抽芯针变形和偏摆的可能性。高强度材料的长抽芯针可降低长抽芯针变形和偏摆的可能性。In view of the deformation and deflection of the long core-pulling needle in the deep and high pressure oil channel hole of the gearbox side cover in die casting process,the effects of the die casting process,mold structure and the material of the core-pulling needle on the deformation and deflection were analyzed.The results show that the casting scheme and the selection of key process parameters are very important to reduce the deformation and deflection of the long core-pulling needle.The positioning stability of long core-pulling needle,the piecewise matching structure of needle and needle sleeve,and the high-pressure cooling structure can all reduce the possibility of deformation and deflection of long core-pulling needle.The long core-pulling needle which produced by high strength W360 material can reduce the possibility of deformation and deflection of the long core-pulling needle.

关 键 词：压铸铝合金 长抽芯针 变形 偏摆 

分 类 号：TG249.2[金属学及工艺—铸造] TG146.21[一般工业技术—材料科学与工程]