发明名称 |
METHOD OF ELECTRIC ARC WELDING OF SPIRAL-SEAM PIPES |
摘要 |
FIELD: technological processes. ^ SUBSTANCE: pipe blank is produced of a stripe by continuous forming. Electric arc welding of external and internal spiral work seams is performed with flux layer. Weld penetration comprises 60-80% of the pipe wall thickness. Reinforcing bead height H does not exceed the value of H=0.8deltaK, mm, where delta is the pipe wall thickness in mm; K is an index within the range of 0.45-0.20 in inverse ratio to the pipe wall thickness. ^ EFFECT: improved internal seam form due to optimised seam weld penetration and reinforcing bead height. |
申请公布号 |
RU2334576(C2) |
申请公布日期 |
2008.09.27 |
申请号 |
RU20060112526 |
申请日期 |
2006.04.14 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "VOLZHSKIJ TRUBNYJ ZAVOD" |
发明人 |
LUBE IGOR' IVANOVICH;MASHINSON IZRAIL' ZINOV'EVICH;CHELYSHEV VALERIJ VALENTINOVICH;PERMJAKOV IGOR' L'VOVICH;VJATCHENNIKOV VLADIMIR VLADIMIROVICH;LJUCHKOV ANATOLIJ DEM'JANOVICH;KARDAEV NIKOLAJ EVGEN'EVICH;RINNAJA NATAL'JA NIKOLAEVNA |
分类号 |
B21C37/08;B21C37/12;B23K9/18;B23K101/06 |
主分类号 |
B21C37/08 |
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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