发明名称 |
METHOD OF HELICAL SPRING HOT WINDING AND MANDREL TO THIS END |
摘要 |
FIELD: process engineering.SUBSTANCE: invention relates to machine building and may be used for producing springs by hot winding. Proposed method consists in using mandrel with outer surface layer made of metal that features lower heat conductance. This allows making the spring coil in tempering with metal martensite structure owing to eliminated heat removal from spring coil inner surface in contact with mandrel outer surface layer.EFFECT: higher quality of springs.2 cl, 2 dwg |
申请公布号 |
RU2496594(C2) |
申请公布日期 |
2013.10.27 |
申请号 |
RU20110153677 |
申请日期 |
2011.12.27 |
申请人 |
OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOST'JU "NPTS"PRUZHINA" |
发明人 |
SHAVRIN OLEG IVANOVICH |
分类号 |
B21F35/00;B21F3/02;F16F1/06 |
主分类号 |
B21F35/00 |
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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