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Analysis on Thermal Simulation Test of SWRCH35KM Cold Heading Steel
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Gang Lv1, Le-yu Zhou2, Xiao-min Zhao1, Lu-ming Yang1
Science & Technology of Baotou Steel | 2022, 48(5) : 85 - 89
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Science & Technology of Baotou Steel | 2022, 48(5): 85-89
• Quality of Variety and Experiment and Research •
Analysis on Thermal Simulation Test of SWRCH35KM Cold Heading Steel
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Gang Lv1, Le-yu Zhou2, Xiao-min Zhao1, Lu-ming Yang1
Affiliations
  • 1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2 Beijing Research Institute of Mechanical and Electrical Technology Co., Ltd., Beijing 100083, China
Published: 2022-10-25
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The phase transition law of continuous cooling for SWRCH35KM test steel is tested with Gleeble-1500 thermal simulated test machine. The phase transition law of spheroidization of pearlite after final rolling is studied by the thermal simulation test of online spheroidization. There are transformations of ferrite and pearlite at different cooling rates as well as the characteristics of microstructure for ferrite change with the increase of cooling rates. When the cooling rate is below 2 ℃/s, the metallographic structure of SWRCH35KM test steel is ferrite and pearlite. With the cooling rate gradually increases, the acicular ferrite along with Widmanstatten structure appear continuously in the metallographic structure. Meanwhile, the ferrite is more refined than before and its volume fraction is also gradually reduced. Based on the phase transition law of microstructure and with thermal simulation test data of SWRCH35KM test steel, rolling and cooling will be strictly controlled in industrial production in order to obtain ideal metallographic structure, especially the controlled cooling mode of Stelmor cooling line to ensure to obtain fine ferrite and spheroidized pearlite.

without annealing  /  phase transition law  /  on-line spheroidization of pearlite
Gang Lv, Le-yu Zhou, Xiao-min Zhao, Lu-ming Yang. Analysis on Thermal Simulation Test of SWRCH35KM Cold Heading Steel[J]. Science & Technology of Baotou Steel, 2022 , 48 (5) : 85 -89 .
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  • Receive Date：2022-08-24
  • Online Date：2025-11-24
  • Published：2022-10-25
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  • Received：2022-08-24
Affiliations
    1 Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    2 Beijing Research Institute of Mechanical and Electrical Technology Co., Ltd., Beijing 100083, 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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