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Discussion on Elimination Method of Internal Hexagonal Defect in Thick Walled Tube
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Wen-liang Zhang, Dong Wang, Jiang-huan Shi
Rare Earth Steel | 2021, 47(3) : 76 - 78
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Rare Earth Steel | 2021, 47(3): 76-78
• Equipment and Automation •
Discussion on Elimination Method of Internal Hexagonal Defect in Thick Walled Tube
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Wen-liang Zhang, Dong Wang, Jiang-huan Shi
Affiliations
  • Steel Tube Co. 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.2021.03.021
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In this paper, it is mainly analyzed and introduced the causes of internal hexagonal defect in super thick walled tube rolled with sizing mill in production of seamless steel pipe. Moreover, it is controlled by such means as increasing the rolling pass as well as reducing the reduction rate of each frame and coefficient of ovality so that the wall thickness accuracy of thick walled tube, ratio of first-grade products and yield of metal are improved.

thick walled tube  /  internal hexagon  /  reduction rate  /  yield
张文亮, 王栋, 史江欢. 厚壁管内六方缺陷消除方法探讨. 包钢科技, 2021 , 47 (3) : 76 -78 . DOI: 10.13647/j.cnki.btgkj.2021.03.021
Wen-liang Zhang, Dong Wang, Jiang-huan Shi. Discussion on Elimination Method of Internal Hexagonal Defect in Thick Walled Tube[J]. Science & Technology of Baotou Steel, 2021 , 47 (3) : 76 -78 . DOI: 10.13647/j.cnki.btgkj.2021.03.021
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Year 2021 volume 47 Issue 3
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doi: 10.13647/j.cnki.btgkj.2021.03.021
  • Receive Date：2021-05-06
  • Online Date：2026-10-20
  • Published：2021-06-25
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  • Received：2021-05-06
Affiliations
    Steel Tube Co. 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
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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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