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我厂在某产品的生产中,为满足强度及产品性能的要求,采用冲击式多孔焊接结沟。其材质为PCrNi3M。中碳铬镍钼高强钢。化学成分如表1所示,机械性能如表2所示。以往,多数重要的焊接结构一般都采用含碳量不大于0.2～0.22％的低碳低合金高强钢,而象PCrNi3Mo这种中碳铬镍钼高强钢,由于其含碳量较高(0.32-0.42％),合金元素多,焊接性能差,用来制造冲击式多孔焊
I plant in the production of a product, in order to meet the strength and product performance requirements, the use of impact porous welding junction ditch. Its material is PCrNi3M. Medium carbon chromium nickel molybdenum high strength steel. Chemical composition shown in Table 1, the mechanical properties shown in Table 2. In the past, most important welded structures generally used low-carbon low-alloy high-strength steel with a carbon content of not more than 0.2-0.22%. However, medium-carbon, high-carbon, medium-chromium, molybdenum and molybdenum steel such as PCrNi3Mo had higher carbon content (0.32- 0.42%), alloying elements, poor welding performance, used to manufacture impact porous welding