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Effect of Interpass Temperature on Microstructure and Wear Performance of Arc Surfacing Layer on High Chromium Cast Iron
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Yumin LOU1, 2, Yimin CUI1, 2, Xiangzhi KONG1, 2, Fan ZHOU1, 2, Jianbo WU1, 2, Lei HU3
Mining and Metallurgical Engineering | 2026, 46(4) : 254 - 259
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Mining and Metallurgical Engineering | 2026, 46(4): 254-259
• MATERIALS •
Effect of Interpass Temperature on Microstructure and Wear Performance of Arc Surfacing Layer on High Chromium Cast Iron
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Yumin LOU1, 2, Yimin CUI1, 2, Xiangzhi KONG1, 2, Fan ZHOU1, 2, Jianbo WU1, 2, Lei HU3
Affiliations
  • 1.Zhejiang Zheneng Technology Research Institute Co., Ltd., Hangzhou 310026, Zhejiang, China
  • 2.Zhejiang Key Laboratory of High-Efficiency Energy Saving and Pollutant Control Technology for Thermal Power Generation, Hangzhou 310026, Zhejiang, China
  • 3.School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan 243002, Anhui, China
doi: 10.3969/j.issn.0253-6099.2026.04.039
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By adopting metal inert gas (MIG) welding, high-chromium cast iron surfacing specimens with preheating and interpass temperatures ranging from 150 ℃ to 350 ℃ were fabricated on the surface of Q345B steel plates using TDCr27-58 high-chromium cast iron flux-cored hardfacing wires. The influence of interpass temperature on macroscopic morphology, microstructure and wear performance of the surfacing layer was investigated via penetrant testing (PT), SEM and pin-on-disk wear test. The results indicate that the increase of interpass temperature improves the fluidity of molten pool and significantly reduces welding spatter and cracks. The surfacing layer mainly consists of primary dendritic austenite and intergranular eutectic M7C3 carbides. The average hardness of the surfacing layer rises with increasing interpass temperature, reaching 716.6HV at 350 ℃, which is 25.2HV and 39.0HV higher than that obtained at 250 ℃ and 150 ℃, respectively. The mass loss at an interpass temperature of 150 ℃ is approximately 63% larger than that at 350 ℃, exhibiting severe spalling pits and adhesive wear characteristics. A higher interpass temperature can extend high-temperature holding duration, accelerate the diffusion of C and Cr atoms, and promote the sufficient precipitation and growth of eutectic carbides, thereby improving the hardness and wear resistance of the surfacing layer.

high chromium cast iron  /  metal inert gas (MIG) welding  /  surfacing layer  /  microstructure and property  /  interpass temperature  /  welding microstructure  /  wear performance  /  arc surfacing
楼玉民, 崔益民, 孔相植, 周梵, 吴剑波, 胡磊. 层间温度对高铬铸铁电弧堆焊层组织和磨损性能的影响. 矿冶工程杂志, 2026 , 46 (4) : 254 -259 . DOI: 10.3969/j.issn.0253-6099.2026.04.039
Yumin LOU, Yimin CUI, Xiangzhi KONG, Fan ZHOU, Jianbo WU, Lei HU. Effect of Interpass Temperature on Microstructure and Wear Performance of Arc Surfacing Layer on High Chromium Cast Iron[J]. Mining and Metallurgical Engineering, 2026 , 46 (4) : 254 -259 . DOI: 10.3969/j.issn.0253-6099.2026.04.039
Appendix
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Year 2026 volume 46 Issue 4
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doi: 10.3969/j.issn.0253-6099.2026.04.039
  • Receive Date：2026-03-01
  • Online Date：2026-10-08
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  • Received：2026-03-01
Funding
Affiliations
    1.Zhejiang Zheneng Technology Research Institute Co., Ltd., Hangzhou 310026, Zhejiang, China
    2.Zhejiang Key Laboratory of High-Efficiency Energy Saving and Pollutant Control Technology for Thermal Power Generation, Hangzhou 310026, Zhejiang, China
    3.School of Materials Science and Engineering, Anhui University of Technology, Ma'anshan 243002, Anhui, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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