ERW管焊接表面

高频电阻焊一并年代teel pipe production, internal weld surface treatments are generally incomplete curettage (left weld reinforcement) and complete curettage (scraping will form the inner surface of the groove) in two ways, and the results were not ideal, will affect the overall performance of the steel pipe. Taking into account the thickness of ERW pipe welds, strength and reliability of ultrasonic testing, squeeze through thick welds - calibrating processing, optimized contour shape welds to improve the overall performance of ERW pipe.

焊接后的ERW钢管，多余的金属从焊接区域挤出，管毛管形成的内外表面，常见的毛刺，通常是刮刀去除内部和外部毛刺。在实际生产中，更好的质量一般刮掉外毛刺，但毛刺内的刮擦问题更有可能将故障的一些内表面留在高或刮槽的形成上。如果在焊接毛刺在正确处理，它将影响钢管的整体质量。

在正常情况下，有两种关于刮板管焊缝毛刺，即不完整和完整的刮宫刮宫的方法。

Incomplete curettage method, which retain a certain degree of inner burr (as some specification allowable burr height not greater than 0.8mm). This method does not hurt the blade base material, does not substantially reduce the structural strength of the weld, but this approach in the subsequent ultrasonic testing of the weld seam, the edges due to residual burrs formed on the base material to form a reflection of the ultrasonic flaw detection for testing the reliability of cause interference, resulting in higher rates of false positives.

完整的刮液法，是关于内毛的完全清洁，底座金属之间的过渡和焊接区域如此温和，消除了毛刺在随后的超声波探测中的剩余效果。然而，这种方法通常由于系统毛刺内的工作刮稳定性，如振动的存在，导致局部看起来刮擦槽焊接，导致底座金属损伤，墙壁稀释，结构强度。