发明名称 Fixing of bearing bolt in valve rocker levers - involves annealing bolt ends to obtain their spreadability
摘要 <p>The method concerns fixing of a bearing bolt (4) in a bore (7) in a housing, in particular, a valve rocker lever (1) produced by casting or deep drawing. To produce a required material and/or form-based joint with the bore, the bolt is spreadable at least at one end (8). The bolt is through-hardened. Prior to a spreading operation, the bolt and/or the bore at the ends (8, 10) are subjected to annealing at a temperature below the point at which pearlite transformation into austenite begins during heating. The bolt is fixed by material displacement in the direction of the housing and/or the bolt.</p>
申请公布号 DE19655440(B4) 申请公布日期 2013.09.05
申请号 DE1996155440 申请日期 1996.04.01
申请人 NOVARTIS VACCINES AND DIAGNOSTICS GMBH 发明人 GROENER, ALBRECHT
分类号 A61K39/145;C12N7/02 主分类号 A61K39/145
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