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焊接檢验 1.金相檢驗金相檢驗能发現焊縫及热影响区的組織結构的均一性和焊接的危險缺陷与微小缺陷,这些缺陷有时用其它方法(包括x或Υ射綫透視)是不能发现或不能判明缺陷的类别,如微观組織、晶粒、微裂、偏析、脫炭以及微小未焊透等缺陷。金相檢驗对高压焊接管道,特別是合金銅和火焊的部件是不可缺少的。 2.机械性能試驗这个試驗是对原材料、焊条、焊接工艺、热处理、組織結构、結构与晶粒分布情况等的綜合檢查。对高压焊接的部件是一項最基本的、最有实际意义的,不可缺少的检验。 3.探伤檢查利用x或Υ射线透視焊縫,在不破
Welding inspection 1. Metallographic examination Metallographic examination can be found in the weld and heat affected zone homogeneity of the organizational structure and the welding of dangerous defects and minor defects, these defects are sometimes used by other methods (including X or Y ray fluoroscopy) Can not find or can not identify the type of defect, such as microstructure, grains, micro-cracks, segregation, carbon removal and micro-impermeable defects. Metallographic testing of high pressure welded pipe, especially copper alloy and fire welding components are indispensable. 2. Mechanical Properties Test This test is a comprehensive inspection of raw materials, welding rod, welding process, heat treatment, structure, structure and distribution of crystal grains. For high-pressure welded parts is a most basic, the most practical, indispensable test. 3. Flaw inspection X-ray or X-ray weld, not broken