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Production method of electrogalvanized high-strength low-alloy steel plate HC340LA+ZE for automobile

A high-strength, low-alloy, production method technology, which is applied in the production field of electro-galvanized high-strength low-alloy steel HC340LA+ZE for automobiles, can solve problems such as poor impact resistance of galvanized sheets, and reduce vehicle body deformation and process Requires loose, good impact performance

Active Publication Date: 2018-02-27
武汉钢铁有限公司
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  • Description
  • Claims
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Problems solved by technology

The disadvantage is that the impact resistance of the galvanized sheet is poor

Method used

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  • Production method of electrogalvanized high-strength low-alloy steel plate HC340LA+ZE for automobile
  • Production method of electrogalvanized high-strength low-alloy steel plate HC340LA+ZE for automobile
  • Production method of electrogalvanized high-strength low-alloy steel plate HC340LA+ZE for automobile

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Embodiment Construction

[0035] In order to better explain the present invention, the main content of the present invention is further clarified below in conjunction with specific examples, but the content of the present invention is not limited to the following examples.

[0036] By controlling the chemical components and mass percentage content of each embodiment, the obtained Table 1 is as follows:

[0037] Table 1 each embodiment of the present invention and the chemical component of comparative example and mass percent content

[0038]

[0039] The steel materials composed of the various chemical components of the above-mentioned embodiments 1 to 8 are carried out according to the following process steps: molten steel is smelted and cast into a slab→hot continuous rolling→cold continuous rolling→continuous annealing→leveling→electrogalvanizing;

[0040] Wherein, the hot continuous rolling includes a hot rolling process, a cooling process and a coiling process, and the process parameters of the...

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Abstract

The invention discloses a production method of an electrogalvanized high-strength low-alloy steel plate HC340LA+ZE for an automobile, and belongs to the technical field of steel smelting. The technological process included by the production method comprises the steps of molten steel smelting and plate blank forming through casting, hot continuous rolling, cold continuous rolling, continuous annealing, leveling and electrogalvanizing. Components of molten steel smelting comprise, by mass percent, 0.04%-0.09% of C, 0.10%-0.25% of Mn, 0.02%-0.06% of Al, 0.010%-0.019% of Nb, 0.031%-0.039% of Ti, 0.010%-0.030% of P, not larger than 0.05% of Si, not larger than 0.025% of S, 0.02%-0.09% of Cr, 0.01%-0.08% of Ni and the balance Fe and inevitable impurities. The requirement of HC340LA+ZE steel prepared through the production method for the technology is loose, a product has good impact performance at normal temperature, automobile body deformation during colliding can be reduced, and passengersafety can be ensured.

Description

technical field [0001] The invention relates to a production method of steel plates for automobiles, which belongs to the technical field of iron and steel smelting, in particular to a production method of electrogalvanized high-strength low-alloy steel plates HC340LA+ZE for automobiles. Background technique [0002] Driven by the lightweight of automobiles, the proportion of parts such as aluminum alloys, magnesium alloys, and plastics is increasing year by year. But the world produces more than 1 billion tons of various metals every year, of which steel accounts for about 80%. Therefore, in the foreseeable future, steel and iron will maintain their dominant position as structural materials. Under the premise of reducing vehicle weight, reducing emissions, reducing fuel consumption and stabilizing manufacturing costs at the same time, use high-strength low-alloy steel to replace ordinary carbon steel, that is, use high-strength low-alloy steel with better performance and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/06C22C38/02C22C38/50C22C38/48C21D8/02
CPCC21D8/0226C21D8/0236C21D8/0242C21D8/0247C22C38/002C22C38/02C22C38/04C22C38/06C22C38/48C22C38/50
Inventor 冯冠文蔡捷王立辉黄道兵田伟文柯陈莹莹江鹤群
Owner 武汉钢铁有限公司
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