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Inclusion Analysis of 20CrMnTiH Gear Steel and Its Optimization
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Zhitong WANG1, Jianyuan ZHANG1, Siqi KANG1, Boyang LI2, Shuhuai LI1, Dongxiao TIAN1, Wensen CHENG3
Angang Technology | 2026, (4) : 63 - 67
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Angang Technology | 2026, (4): 63-67
• Production Practice •
Inclusion Analysis of 20CrMnTiH Gear Steel and Its Optimization
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Zhitong WANG1, Jianyuan ZHANG1, Siqi KANG1, Boyang LI2, Shuhuai LI1, Dongxiao TIAN1, Wensen CHENG3
Affiliations
  • 1.Ansteel Group Lingyuan Iron & Steel Co., Ltd., Lingyuan 122500, Liaoning, China
  • 2.Ansteel Iron & Steel Research Institutes, Anshan 114009, Liaoning, China
  • 3.Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, China
doi: 10.3969/j.issn.1006-4613.2026.04.009
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In response to the decline in the qualification rate of inclusion internal control indices in 20CrMnTiH gear steel (sum of fine inclusion series categories ≤2.0, sum of coarse inclusion series categories ≤1.5, Ds≤1.0) at Ansteel Group Lingyuan Iron & Steel Co., Ltd., through data analysis and precise calcium treatment software analysis, the primary reason for the problem mentioned above was that the calcium content in the molten steel was too low, which caused the inclusion composition to deviate from the liquid phase region. After implementing measures such as optimizing the calcium addition process from"LF (calcium wire feeding)—RH"to"LF—RH (calcium wire feeding)"and reducing the calcium addition amount from 80~120 m/heat to 50~60 m/heat, the qualification rate of inclusion internal control indices for 20CrMnTiH improved from 74% to 90%. Meanwhile, the calcium yield in the molten steel in the continuous casting tundish increased from 2%~4% to 20%~25%, ensuring smooth production while improving the quality of the gear steel.

gear steel  /  inclusion  /  calcium addition amount  /  calcium yield
王志通, 张建元, 康思琪, 李博洋, 李术怀, 田东晓, 程文森. 20CrMnTiH齿轮钢夹杂物分析及优化. 鞍钢技术, 2026 , (4) : 63 -67 . DOI: 10.3969/j.issn.1006-4613.2026.04.009
Zhitong WANG, Jianyuan ZHANG, Siqi KANG, Boyang LI, Shuhuai LI, Dongxiao TIAN, Wensen CHENG. Inclusion Analysis of 20CrMnTiH Gear Steel and Its Optimization[J]. Angang Technology, 2026 , (4) : 63 -67 . DOI: 10.3969/j.issn.1006-4613.2026.04.009
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Year 2026 volume Issue 4
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doi: 10.3969/j.issn.1006-4613.2026.04.009
  • Online Date：2026-09-20
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History
  • Revised：2025-12-10
Affiliations
    1.Ansteel Group Lingyuan Iron & Steel Co., Ltd., Lingyuan 122500, Liaoning, China
    2.Ansteel Iron & Steel Research Institutes, Anshan 114009, Liaoning, China
    3.Ansteel Beijing Research Institute Co., Ltd., Beijing 102200, 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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