高压管焊缝的检验,根据苏联化学工业部的技术资料规定:除焊缝处及其附近需作详细的外部检验外,还应当:(1)对焊缝进行 x 光或γ线透视;(2)机械性能试验;(3)焊缝金相检验。高压管道通径在15公厘以上者都需经过 x 射线透视,如果焊缝经过透视以后的评价为2分则认为合格,否则应修补或铲除重焊。管子焊缝内径通常随工件的变换而大小不一,因此放置 x 光底片的位置也应该适当改变,否则透视结果,焊缝缺陷影痕常会重叠,使鉴定者不易认清缺陷的位置和性质,有时还会模糊不清。对高压管焊缝 x 光透视方法,我们采用以下二种:1.公称通径60公厘以下的管子,在焊接过程中一 Inspection of high pressure pipe welds, according to the Soviet Union Ministry of Chemical Industry technical information provides: In addition to the weld and its vicinity required for detailed external inspection, but also: (1) on the weld X-ray or γ-ray perspective; ( 2) mechanical properties test; (3) weld metallographic examination. High-pressure pipe diameter of 15 mm or more are subject to x-ray fluoroscopy, if the weld after the evaluation of 2 points is considered qualified, or should be repaired or eradicated re-welding. Tube weld diameter usually varies with the size of the workpiece, so the location of the x-ray film should also be properly changed, or fluoroscopy results, weld defects often overlap shadow marks, so that identification is not easy to identify the location and nature of defects, Sometimes blurred. For high-pressure pipe weld x-ray method, we use the following two: 1. Nominal diameter of 60 mm below the pipe, during the welding process