发明名称 |
SUBMERGED ARC WELDING METHOD OF ONE SIDE PROVIDED WITH BACKING STRIP |
摘要 |
PURPOSE:To prevent a welding defect from the first layer and to improve welding efficiency with a joint which get wet in the rain in the stage of butt welding said joint using a backing strip by limiting the space between the base metal and the backing strip for welding the first layer and the bulk density of a flux. CONSTITUTION:The space between a backing strip 4 and the rear surface of a base metal 1 is set at >=1mm. and <=2mm. and the first layer is subjected to submerged arc welding by using a flux having <=1.2g/cm<3> bulk specific gravity. The submerged arc welding is executed for the 2nd and succeeding layers in the same way as in the prior art. The backing strip 4 provided with a groove 8 having a depth G by machining is used or the backing strip 4 on which spacers 9 having a thickness G are placed at a specified interval is used in order to maintain the space between the metal 1 and the strip 4 within the above-described range. |
申请公布号 |
JPS6061176(A) |
申请公布日期 |
1985.04.08 |
申请号 |
JP19830168278 |
申请日期 |
1983.09.14 |
申请人 |
NIHON KOUKAN KOUJI KK |
发明人 |
MIYATA SOUZABUROU;IKEDA SHINICHI;KISHIDA HITOSHI |
分类号 |
B23K9/18;B23K9/035 |
主分类号 |
B23K9/18 |
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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