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我厂的单面焊接双面成形焊接工艺应用至今,已有十余年的历史。由于采用的是单丝焊,所以目前只限于在6～14毫米厚的板列拼板中使用,而厚度超过14毫米的板列拼接仍采用双面焊。随着船舶吨位的增加,厚板的焊接工作量所占的比重越来越大,如16000吨运煤船的底板、外板、甲板及内底板等,厚度大都超过14毫米。这种板只能采用双面焊工艺,因而生产效率较低。单丝焊除了焊接速度慢,生产效率低外,主要的是难于保证厚板单面焊接的机械性能。这就妨碍了单面焊的广泛采用。欲要改变这种状况,就必须采用多丝焊工艺。经过多年
I plant the single-sided welding two-sided forming welding process has been more than 10 years of history. Due to the use of monofilament welding, it is currently only used in plate pallets with a thickness of 6 to 14 millimeters, while sheet ply welding with a thickness of more than 14 millimeters still uses double-sided welding. With the increase of ship tonnage, the proportion of heavy plate welding workload is increasing, such as 16000 tons of coal ship’s bottom plate, outer plate, deck and inner bottom plate, the thickness of mostly more than 14 mm. This board can only use double-sided welding process, thus lower production efficiency. Monofilament welding in addition to slow welding speed, low production efficiency, the main difficulty is to ensure the mechanical properties of single-sided welding plate. This hindered the widespread adoption of single-sided welding. To change this situation, we must use multi-wire welding process. After many years