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1. 发明申请

US20070079948A1 Manufacturing Method of Semi-Finished Piston with Inner Cooling Channel through Liquid Extrusion Process 审中-公开
标题翻译：通过液体挤出工艺制造内冷却通道的半成品活塞的制造方法
公开(公告)号：US20070079948A1
公开(公告)日：2007-04-12
申请号：US11278746
申请日：2006-04-05
申请人： Guohua Zhang , Xiao Sun , Xiaobo Gao , Shibo Zhao , Yanpeng Liu , Hongmin Wang , Xuejun Ma , Zengjian Feng
发明人： Guohua Zhang , Xiao Sun , Xiaobo Gao , Shibo Zhao , Yanpeng Liu , Hongmin Wang , Xuejun Ma , Zengjian Feng
IPC分类号： B22D19/08 , B22C9/10
CPC分类号： B22D19/0027 , B22C9/105 , B22C9/108 , B22D17/24
摘要： This invention has provided a manufacturing method of semi-finished piston with inner cooling channel through liquid extrusion process, including the following steps: a) produce a wear-resistant cast iron ring with coupling hooks and a common salt and corundum dissoluble core with convex edges; b) fix the wear-resistant cast iron ring in the casting moulds after being aluminized; c) fix the dissoluble core after being pre-heated on the wear-resistant cast iron ring with coupling hooks and convex edges; d) fill in the casting mould with aluminum alloy liquid, compressing and molding. The dissoluble core can be accurately fixed in the casting mould through coupling hooks and convex edges. When the semi-finished piston has been manufactured into finished product, it shall be characterized by high compactness and high mechanical property resulted from liquid extrusion technology. Meanwhile, because of the cooling channel, the temperature in the combustion chamber of the head and ring groove is reduced, the load capacity of the piston is greatly improved, and the manufacturability becomes better.
摘要翻译：本发明提供了一种通过液体挤出工艺制造具有内部冷却通道的半成品活塞的制造方法，其包括以下步骤：a）制造具有连接钩的耐磨铸铁环和具有凸缘的普通盐和刚玉可溶芯 ; b）镀铝后在铸模中固定耐磨铸铁环; c）在具有连接钩和凸边的耐磨铸铁环上预热后固定可溶性芯; d）用铝合金液体填充铸模，压缩成型。可以通过连接钩和凸边缘将可溶性芯体精确地固定在铸模中。当半成品活塞已经制成成品时，其特点是液体挤出技术产生的紧凑性和机械性能很高。同时，由于冷却通道，头环和环槽的燃烧室中的温度降低，活塞的负载能力大大提高，制造性变好。

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