发明名称 |
Method, production line, and piston blank used for the production of a monolithic piston for combustion engines, and piston for combustion engines |
摘要 |
A method and a manufacturing line allow for the manufacture of piston blanks of dimensions close to the final dimensions, which in the course of subsequent finish-machining need only be machined with removal of material to a small degree. A piston shaft of the piston blank is produced by backward extrusion. At least one hollow throat element is already produced at the piston blank by an upset-forging operation. For this purpose, a special forging tool is provided, which, after the manufacture of the piston shaft, takes effect on the piston blank in such a way that at least one hollow throat element is formed at the latest at subsequent forming of the piston base. In this way, a perceptible reduction is achieved in the weight of a piston in relation to conventionally manufactured forging pistons.
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申请公布号 |
US2009013531(A1) |
申请公布日期 |
2009.01.15 |
申请号 |
US20060064891 |
申请日期 |
2006.07.18 |
申请人 |
THYSSENKRUPP METALURGICA CAMPO LIMPO LTDA. |
发明人 |
HERALDO CARLOS FURQUIM;GARCIA JOAO LESTER |
分类号 |
B23P15/10;B23P19/00;F16J1/00 |
主分类号 |
B23P15/10 |
代理机构 |
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代理人 |
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地址 |
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