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Measures to Improve Service Life of Mandrel for Large Diameter Continuous Rolling Mill
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Zhen Lin1, Ran Kao1, Dong-qing Guo2
Rare Earth Steel | 2021, 47(3) : 16 - 19
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Rare Earth Steel | 2021, 47(3): 16-19
• Production Practice and Management •
Measures to Improve Service Life of Mandrel for Large Diameter Continuous Rolling Mill
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Zhen Lin1, Ran Kao1, Dong-qing Guo2
Affiliations
  • 1.Steel Tube Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
  • 2.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
Published: 2021-06-25 doi: 10.13647/j.cnki.btgkj.2021.03.005
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The problems of misrun on surface of three-section mandrel for large diameter continuous rolling mill and fracture at joint of bolt are solved through such measures as controlling the cooling effect of mandrel, adjusting the thickness of lubricating layer of graphite, reducing the coefficient of elongation for rolling ultra-thin-wall steel pipe with maximum diameter mandrel, designing the function of "mandrel avoidance" in servo system of continuous rolling mill and adding gasket unit at the joint of connecting rod and working section so that the service life of mandrel is significantly improved and the use cost of mandrel is reduced by about 8%.

continuous rolling mill  /  three-section mandrel  /  function of mandrel avoidance  /  graphite
林震, 考然, 郭冬青. 提高大直径连轧机组芯棒使用寿命的措施. 包钢科技, 2021 , 47 (3) : 16 -19 . DOI: 10.13647/j.cnki.btgkj.2021.03.005
Zhen Lin, Ran Kao, Dong-qing Guo. Measures to Improve Service Life of Mandrel for Large Diameter Continuous Rolling Mill[J]. Science & Technology of Baotou Steel, 2021 , 47 (3) : 16 -19 . DOI: 10.13647/j.cnki.btgkj.2021.03.005
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Year 2021 volume 47 Issue 3
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Article Info
doi: 10.13647/j.cnki.btgkj.2021.03.005
  • Receive Date：2021-05-06
  • Online Date：2026-10-20
  • Published：2021-06-25
Article Data
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History
  • Received：2021-05-06
Affiliations
    1.Steel Tube Co. of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, China
    2.Technical Center of Inner Mongolia Baotou Steel Union Co., Ltd., Baotou 014010, Inner Mongolia Autonomous Region, 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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