发明名称 |
Magnesium-based alloy screw and producing method thereof |
摘要 |
<p>[Problems] It is an object of the invention to provide a producing method of a magnesium-based alloy screw capable of producing a screw made of magnesium-based alloy having excellent strength with excellent productivity, and to provide a magnesium-based alloy screw. [Means to Solve the Problem] The producing method includes a head forging step in which a head working for forming a head portion of a screw on a wire made of magnesium-based alloy obtained by drawing is carried out by warm working to produce a screw blank, and a thread rolling step in which thread rolling for forming screw thread on the screw blank is carried out by warm working to produce a screw. The head working in the head forging step is carried out using holding die which fixes the wire and a punch which forms a head portion of the screw. The holding die and the punch are heated, in which at least the holding die are heated to 140°C or higher and 250°C or lower, thereby heating the wire to 140°C or higher and lower than 250°C.</p> |
申请公布号 |
EP2012027(A1) |
申请公布日期 |
2009.01.07 |
申请号 |
EP20080016896 |
申请日期 |
2004.06.15 |
申请人 |
SUMITOMO ELECTRIC INDUSTRIES, LTD. |
发明人 |
OISHI, YUKIHIRO;KAWABE, NOZOMU;HASHIMOTO, KENZABURO;FUKUDA, KENJI |
分类号 |
B21K1/46;F16B35/00;B21H3/06;B21J1/06;B21J5/00;B21K1/56;C22F1/00;B21K27/06;C22C23/00;C22C23/02;C22F1/06;F16B33/00 |
主分类号 |
B21K1/46 |
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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