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无铬8号钢是立足于我国资源而研制成功的一种高压锅炉过热器管用钢。为了促进无铬8号钢的应用,进行了研制供该钢焊接用的焊条和焊丝的工作。目前研制成功的焊条(或焊丝),与相同工作温度和工作压力下用的热317焊条(焊12Cr1MoV钢)和69新1焊条(焊F11钢)相比,由于它采用了我国富产的硅和稀土等元素来代替铬和镍等元素,不仅节约贵重合金元素,而且高温性能达到了使用的要求。此外,经有关焊接师傅多次施焊,对其焊接工艺性能表示满意。目前,一般的焊条厂均能生产这种焊条。
Chromium-8-free steel is based on China’s resources and the successful development of a high-pressure boiler superheater tube steel. In order to promote the application of chromium-free steel No. 8, work was conducted on the development of electrodes and welding wires for the welding of steel. The currently developed electrode (or wire), compared with the hot 317 electrode (12Cr1MoV steel) and the 69 new 1 electrode (F11 steel) for the same working temperature and working pressure, because it uses our rich silicon And rare earth and other elements to replace chromium and nickel and other elements, not only save valuable alloying elements, and high temperature performance to meet the requirements. In addition, the welding master repeatedly welding, expressed satisfaction with its welding process performance. At present, the general electrode factory can produce such electrodes.