焊管机组在线矫平机是焊管生产线的主要设备之一，为了确保高强度、大直径、厚壁焊管生产的顺利进行，矫平机的性能十分重要。
Online Flattener is main equipment of welded pipe unit, the property of Flattener is very important to ensure production of welded pipe with larger wall thickness going well.
采用双螺旋焊线提高了连接强度，减少了重叠率使之小于50％， 从而达到成本低。
The double spiral wire solders are adopted to improve the connecting strength and reduce the overlapping coefficient to less than 50 percent, thereby reducing the cost.
结果表明，在保证试件完全焊透的情况下，降低电子束的线能量，可在一定程度上提高接头的强度；
Some pores appeared mainly near in the bond line, but porosity can be suppressed to a great extent by increasing welding speed or electron beam scanning.
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