发明名称 |
Fuel injector tip autofrettage process |
摘要 |
A production robust autofrettage process for strengthening fuel injector nozzle tips includes applying a vacuum to the interior volume of the nozzle tip. Plugs are suctioned over each of the nozzle outlets. Nozzle outlets are blocked by pressing the plugs between the nozzle tip and a fixture component. The nozzle tip is then autofrettaged at least in part by pressurizing the interior volume with an autofrettage liquid. The plugs are then removed from the nozzle outlets leaving the nozzle tip strengthened with compressive residual stress, especially in the sac region of the interior volume of the nozzle tip.
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申请公布号 |
US8381402(B2) |
申请公布日期 |
2013.02.26 |
申请号 |
US20090628506 |
申请日期 |
2009.12.01 |
申请人 |
CATERPILLAR INC.;GRANT MARION B.;MICHLIK PETR |
发明人 |
GRANT MARION B.;MICHLIK PETR |
分类号 |
B21K21/08 |
主分类号 |
B21K21/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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