Low-carbon low-silicon hot-rolled coil used in mobile conveying pipe and manufacturing method thereof

A low-carbon, low-silicon, manufacturing method technology, applied in the field of pipeline steel, can solve the problems of unable to meet the requirements of comprehensive mechanical properties, surface quality and plate shape of coils, and meet the requirements of anti-corrosion galvanizing, inhibit recovery, and optimize alloys The effect of compositional design

Active Publication Date: 2017-03-29
SHOUGANG CORPORATION
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a low-carbon and low-silicon hot-rolled coil for mobile conveying pipes and its manufacturing method, which solves the problem that the conventional pipeline steel in the prior art cannot meet the comprehensive mechanical properties and surface requirements of the movable conveying pipeline. Technical issues of quality and shape requirements

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  • Low-carbon low-silicon hot-rolled coil used in mobile conveying pipe and manufacturing method thereof
  • Low-carbon low-silicon hot-rolled coil used in mobile conveying pipe and manufacturing method thereof
  • Low-carbon low-silicon hot-rolled coil used in mobile conveying pipe and manufacturing method thereof

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Embodiment Construction

[0028] The embodiment of the present invention provides a low-carbon and low-silicon hot-rolled coil for mobile conveying pipes and its manufacturing method, which solves the problem that the conventional pipeline steel in the prior art cannot meet the comprehensive mechanical properties and surface requirements of the movable conveying pipeline. The technical problems of quality and plate shape requirements; achieved comprehensive mechanical properties, surface quality and good technical effects of plate shape, providing good raw materials for thin-gauge, small-diameter mobile pipelines, and good surface, which can meet the needs of galvanizing.

[0029] In order to solve the above-mentioned technical problems, the present invention provides a low-carbon and low-silicon hot-rolled coil plate for mobile conveying pipes, which includes the following components in terms of mass percentages: C: 0.02-0.08wt%, Si: 0.01-0.05wt%, Mn: 1.20~1.60wt%, P: ≤0.015wt%, S≤0.002wt%, V: 0~0.05wt...

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Abstract

The invention discloses a low-carbon low-silicon hot-rolled coil used in a mobile conveying pipe and a manufacturing method thereof, and belongs to the technical field of pipeline steels. The coil is prepared from, by mass, 0.02-0.08 % of C, 0.01-0.05% of Si, 1.2-1.6% of Mn, 0.015% or below of P, 0.002% or below of S, 0-0.05% of V, 0.02-0.06 % of Nb, 0-0.3% of Cr, and 0.01-0.05% of Ti, and the balance Fe and inevitable trace impurities, wherein the inevitable trace impurities comprise granular bainite, ferrite and pearlitic structures. The manufacturing method comprises smelting, continuous casting, double heating, rough rolling, finish rolling, cooling and reeling. Through optimization of designing of allotting components, and controlling of the cooperation of technologies of heating, rolling, and reeling, the obtained coil has a good comprehensive mechanical property, surface quality, and a coil shape; meanwhile, the coil is applicable to mobile conveying pipelines, and can meet demands of corrosion prevention and galvanization.

Description

technical field [0001] The invention relates to the technical field of pipeline steel, in particular to a low-carbon and low-silicon hot-rolled coil for a movable conveying pipe and a manufacturing method thereof. Background technique [0002] In recent years, pipeline construction has developed in the direction of "large diameter", "large wall thickness" and "high steel grade" from the perspective of improving transmission efficiency and saving costs. However, the design and construction period of this type of pipeline is long, and the flexibility is poor. It is not suitable for ensuring the supply of oil and water in the face of emergencies such as earthquake resistance and flood control. Therefore, a mobile pipeline design method should be developed. pregnancy. The mobile transmission pipeline has the characteristics of temporary and sudden, and its main function is to realize the fast and efficient temporary large-flow transportation of oil under emergency conditions. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/12C22C38/14C22C38/38C22C38/28C22C38/26C22C38/24C21D8/02
CPCC21D8/0226C21D8/0242C21D2211/002C21D2211/005C21D2211/009C22C38/02C22C38/04C22C38/12C22C38/14C22C38/24C22C38/26C22C38/28C22C38/38
Inventor 牛涛安成钢姜永文吴新朗高攀陈斌武军宽李飞于晨张彩霞代晓莉徐伟崔阳
Owner SHOUGANG CORPORATION
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