Effect of Controlled Rolling and Cooling Process on Structure and Properties of X100 Pipeline Steel

Special Steel ›› 2007, Vol. 28 ›› Issue (5): 25-27.

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Effect of Controlled Rolling and Cooling Process on Structure and Properties of X100 Pipeline Steel

Liu Shouxian^1,2 , Luo Haiwen² , Yong Qilong^1,2 , Wang Ruizhen² , Long Jinming¹

1. Institute of Materials and Metallurgy Engineering,Kunming University of Science and Technology,Kunming 650093;
2. Institute for Structural Materials,Central Iron and Steel Research Institute,Beijing 100081;

Received:2007-04-09 Online:2007-10-01 Published:2023-02-13

控轧控冷工艺对X100管线钢组织和性能的影响

刘守显^1,2，罗海文²，雍岐龙^1,2，王瑞珍²，龙晋明¹

1. 昆明理工大学材料与冶金工程学院，昆明 650093;
2. 钢铁研究总院结构材料研究所，北京 100081;

作者简介:刘守显(1981-)，男，硕士研究生，高钢级管线钢研究

Abstract

Abstract: The controlled rolling and cooling test for a V-Nb-Ti microalloying X100 pipeline steel(0.057C,1.84Mn, 0.25Mo) has been caried out by φ350 mm 4 roll mill in laboratory.Results showed that with initial rolling temperature 1100 ℃,finishing temperature 800~900 ℃ and end cooling temperature 100～400 ℃ the structure of X100 steel was acicular ferrite + granular bainite-lower bainite; and with decreasing finishing temperature,the structure fined and strength of steel increased,with decreasing end cooling temperature the strength increased but the toughness of steel decreased. The optimum hot rolling process for X100 pipeline steel is finishing temperature 850 ℃ with end cooling temperature 200 ℃.

Key words: X100 Pipeline Steel, Controlled Rolling and Cooling Process, Structure, Mechanical Properties

摘要： 通过实验室φ350 mm 4辊轧机对V-Nb-Wi微合金化X100管线钢(%:0.057C、1.84Mn、0.25Mo)进行控轧控冷试验。结果表明,在1 100℃始轧,800～900℃终轧,100～400℃终冷温度下,X100钢的组织为针状铁素体+粒状贝氏体-下贝氏体。降低终轧温度可细化组织,提高钢的强度;降低终冷温度可提高钢的强度,但使钢的韧性降低。X100管线钢的最佳轧制工艺为终轧温度850℃,终冷温度200℃。

关键词: X100管线钢, 控轧控冷, 组织, 机械性能

Liu Shouxian , Luo Haiwen , Yong Qilong , Wang Ruizhen , Long Jinming. Effect of Controlled Rolling and Cooling Process on Structure and Properties of X100 Pipeline Steel[J]. Special Steel, 2007, 28(5): 25-27.

刘守显, 罗海文, 雍岐龙, 王瑞珍, 龙晋明. 控轧控冷工艺对X100管线钢组织和性能的影响[J]. 特殊钢, 2007, 28(5): 25-27.

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Effect of Controlled Rolling and Cooling Process on Structure and Properties of X100 Pipeline Steel

控轧控冷工艺对X100管线钢组织和性能的影响

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