发明名称 |
METHOD FOR ROLLING HEXAHEDRAL STEEL RODS |
摘要 |
metallurgy, namely production of hexahedral steel rods. SUBSTANCE: method comprises steps of multiple reduction of blank in grooved rolls for obtaining in last but one pass symmetrical cross section strip with concave opposite sides and beveled edges; at last but one pass in each zone of transition of concave strip to beveled edge forming thickened portion restricted by two circle arcs with curvature (0.03-0.15) 1/mm in such a way that one arc is joined with concave side of strip and other arc - with beveled edge and cross section area of thickened portion consists (1-4)% of cross section area of strip. EFFECT: preventing formation of rounded angles of hexahedral piece due to redistribution of metal displaced at deformation. 2 dwg, 1 tbl, 1 ex
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申请公布号 |
RU2184627(C2) |
申请公布日期 |
2002.07.10 |
申请号 |
RU20000117418 |
申请日期 |
2000.07.03 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "SEVERSTAL'" |
发明人 |
MONID V.A.;NIKIFOROV V.V.;TRAJNO A.I. |
分类号 |
B21B1/08;(IPC1-7):B21B1/08 |
主分类号 |
B21B1/08 |
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