Welding on high-carbon steel is carried out in various engineering fields including train and tram tracks.The presented paper describes the technology of resurfacing of rails (0.65 percent C, 1.0 percent Mn, 0.4 percent Si) carried out by automatic submerged arc welding (SAW) without preheating using low-carbon wire (0.07 percent C, 1.1 percent Mn, 0.3 percent Si or 0.1 percent C, 1.1 percent Mn and 2.5 percent Ni) in combination with FLUX OK 10.71. During welding the carbon content increases in the weld metal and decreases in the HAZ of high-carbon steel.The relation of welding parameters (heat input Q [kJ.cm~(-1)] and electric current I [A]) to above-mentioned changes in carbon content, as well as crack formation is determined.
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机译：高碳钢的焊接在火车和电车轨道等各个工程领域中进行。本文介绍了通过自动埋弧焊（0.65％C，1.0％Mn，0.4％Si）进行钢轨重铺技术（ SAW）无需与FLUX OK 10.71结合使用低碳焊丝（0.07％C，1.1％Mn，0.3％Si或0.1％C，1.1％Mn和2.5％Ni）进行预热。在焊接过程中，高碳钢中的碳含量会增加，而焊缝中的碳含量会降低。焊接参数（热量输入Q [kJ.cm〜（-1）]和电流I [A]）与上述参数的关系确定碳含量的上述变化以及裂纹的形成。
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