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在铬镍不锈钢焊条中,有一些铁素体组织存在,可以改善抗裂性能。但含量超过一定界限,又会降低冲击值。苏联在化工机械设备中,一般推荐铁素体含量在1.5～2%。关于铁素体的控制,我们是借调整涂料配方中金属铬完成的,加4%金属铬基本达到铁素体少于2%的指标。另外,焊接工艺也是有关系的,但只要控制好涂料配方中促进铁素体的合金元素(主要是铬),一般是稳定的。其次,涂料厚度对铁素体影响不显
In chrome-nickel stainless steel welding rod, there are some ferrite organization, can improve crack resistance. But the content exceeds a certain limit, will reduce the impact value. The Soviet Union in the chemical machinery and equipment, the general recommended ferrite content of 1.5 to 2%. Regarding the control of ferrite, we have done this by adjusting the chromium content of the coating formulation, and adding 4% metallic chromium basically achieves the ferrite less than 2%. In addition, the welding process is also related, but as long as the control of paint formulations to promote ferrite alloying elements (mainly chromium), is generally stable. Second, the thickness of the coating has no effect on ferrite