论文部分内容阅读
如果需要很长时间制做一块实用的、不易被肉眼发现的细微裂纹的检验试块,那末,下述方法是可行的,它能制做位置、方向和长度可控制的尖细裂纹试快.制做工艺:所需材料为:(1)厚度至少为0.5in(12.7mm)的A537Ⅰ级钢板一块;(2)厚度为0.13in或稍厚一些的碳钢板(CS)一块;(3)直径为0.13～0.19in(3.2～4.8mm)的E7010-A1纤维型焊条.然后按试块所需尺寸或其倍数来切割A537Ⅰ级钢板.焊在A537Ⅰ级钢板上的碳钢尺寸是无关紧要的,其坡口切割取决于所需裂纹的方向,如需要同一方向的裂纹,则坡口开成一直线,若需要不同方向的裂纹,可将碳钢板加工成锯齿状、交错状或阶梯状1或是这
If it takes a long time to make a practical test coupon that is not easily visible to the naked eye, then the following method is feasible, it can be made to control the location, orientation and length of the crack crack quickly. Production process: The required materials are: (1) a piece of A537 grade steel with a thickness of at least 0.5 in (12.7 mm); (2) a piece of carbon steel (CS) with a thickness of 0.13 in or slightly thicker; (3) Is 0.13 ~ 0.19in (3.2 ~ 4.8mm) E7010-A1 fiber type electrode and then press the required size of the test block or its cutting A537 class I. The size of carbon steel welded A537 grade steel is irrelevant, The bevel cutting depends on the direction of the required crack, such as the need to crack in the same direction, the groove in a straight line, if the need for cracks in different directions, the carbon steel can be processed into a jagged, staggered or stepped 1 or This