发明名称 |
MANUFACTURE OF PISTON HEAD FOR PREFABRICATED PISTON |
摘要 |
A piston bottom for large capacity internal-combustion engines is made by forging a saucer-shaped blank from refractory-forging steel and then in a second forging step transforming the saucer-shaped blank into a cup configuration with a planar rim of the blank being transformed into a cylindrical shoulder and an annular bulge of the blank being transformed into an annular boss for connecting the piston bottom of the cylindrical body of the piston. The blank has a convexity projecting on one side of the blank opposite that formed with the bulge. |
申请公布号 |
JPS594938(A) |
申请公布日期 |
1984.01.11 |
申请号 |
JP19830104344 |
申请日期 |
1983.06.13 |
申请人 |
BERUHEMU UNTO SHIYAABERUKU GMBH |
发明人 |
RIYUTOGAA BERUHEMU |
分类号 |
B21K1/18;B23P15/10;F02F3/00 |
主分类号 |
B21K1/18 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|