发明名称 |
A POPPET VALVE WITH A FORMED FACE, AND METHOD OF MAKING |
摘要 |
<p>A method of forming a poppet valve having a stem, a valve head and a valve seat while concurrently maintaining compressive residual stress without grain coarsening on both the valve body and the valve seat. The method includes forming a rounded cladded part on the valve head of the poppet valve by welding and forming a valve seat surface at a predetermined aperture angle and cutting the cladded part to form a smooth surface which is subjected to uniform contact pressure at a temperature less than the recrystallization temperature of the base material or cladding material, whichever is lower, to enhance the durability of the valve seat.</p> |
申请公布号 |
KR20140022827(A) |
申请公布日期 |
2014.02.25 |
申请号 |
KR20137026398 |
申请日期 |
2012.06.14 |
申请人 |
NITTAN VALVE CO., LTD. |
发明人 |
MIKAMI MAIKU;KURAHASHI KAZUNORI |
分类号 |
B23K9/04;B21K1/22;B23K31/00;F01L3/04 |
主分类号 |
B23K9/04 |
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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