发明名称 |
METAL MOLD FOR EXTRUSION FORMING, FABRICATION METHOD OF METAL MOLD FOR EXTRUSION FORMING, AND HONEYCOMB STRUCTURE FABRICATION METHOD |
摘要 |
The die for extrusion molding of the present invention includes: a first face; a second face formed opposite the first face; a raw material supply section with a first through hole that extends from the first face toward the second face; and a molding section with a second through hole that extends from the second face toward the first face so as to communicate with the first through hole, wherein the die includes a treated surface on the inner wall surface of the second through hole, the treated surface being obtainable through the steps of: machining a material of the die to form the material into a die having a predetermined shape and to form a machining-affected layer on the inner wall surface of the second through hole in the molding section; forming an oxidized layer by heating the machining-affected layer to oxidize the layer so as to convert the machining-affected layer into an oxidized layer; and removing the oxidized layer. |
申请公布号 |
EP2832512(A1) |
申请公布日期 |
2015.02.04 |
申请号 |
EP20120872982 |
申请日期 |
2012.03.29 |
申请人 |
IBIDEN CO., LTD |
发明人 |
ASAI MAKOTO;KAWANO SHUICHI |
分类号 |
B28B3/26 |
主分类号 |
B28B3/26 |
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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