Cold-rolled steel sheet for automobile silencer and production method of cold-rolled steel sheet

A technology of cold-rolled steel sheet and production method, which is applied in the field of iron-based alloys, can solve the problems of high manufacturing cost and unstable material properties, and achieves the effects of satisfying high shape requirements, optimizing reduction ratio, and improving steel shape.

Inactive Publication Date: 2020-04-21
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a cold-rolled steel plate for automobile sound-absorbing sheet and its production method, which mainly solves the technical problems of high manufacturing cost and unstable material properties of the existing cold-rolled steel sheet for automobile sound-absorbing sheet

Method used

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  • Cold-rolled steel sheet for automobile silencer and production method of cold-rolled steel sheet
  • Cold-rolled steel sheet for automobile silencer and production method of cold-rolled steel sheet
  • Cold-rolled steel sheet for automobile silencer and production method of cold-rolled steel sheet

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with specific examples 1-5, as shown in Table 1-4, Table 1 is the chemical composition (by weight percentage) of the steel of the embodiment of the present invention, and the balance is Fe and unavoidable impurities.

[0044] Table 1 Chemical composition of the steel of the embodiment of the present invention, unit: weight percent.

[0045] element C Si mn P S Al this invention 0.05-0.07 ≤0.034 0.2-0.3 ≤0.018 ≤0.0164 0.01-0.04 Example 1 0.0589 0.0056 0.2324 0.0145 0.0088 0.022 Example 2 0.0588 0.007 0.2406 0.0152 0.0113 0.018 Example 3 0.0654 0.0081 0.2385 0.0154 0.0084 0.038 Example 4 0.068 0.0065 0.2438 0.0142 0.0084 0.027 Example 5 0.558 0.0095 0.2815 0.0128 0.0093 0.012

[0046] The molten steel that meets the basic requirements of the chemical composition is obtained through converter smelting. After the molten ...

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Abstract

The invention discloses a cold-rolled steel sheet for an automobile silencer and a production method of the cold-rolled steel sheet. The technical problems that an existing cold-rolled steel sheet forthe automobile silencer is high in manufacturing cost and not stable in material performance are mainly solved. The cold-rolled steel sheet for the automobile silencer is prepared from chemical components in percent by weight including 0.05%-0.07% of C, smaller than or equal to 0.034% of Si, 0.2%-0.3% of Mn, smaller than or equal to 0.018% of P, smaller than or equal to 0.0164% of S, 0.01%-0.04%of Al and the balance Fe and inevitable impurity elements. The yield strength RP0.2 of the cold-rolled steel sheet is 580 MPa-740 MPa, the Vicker's hardness HV1 is 185-230, the wave height within 2 min the rolling direction of the cold-rolled steel sheet is smaller than or equal to 2.5 mm, and the surface roughness Ra of the cold-rolled steel sheet is 0.45 micrometer-0.60 micrometer. The cold-rolled steel sheet is used for the automobile silencer component, and the production cost is reduced by 50-100 yuan/ton of steel.

Description

technical field [0001] The invention relates to a cold-rolled steel plate and a production method thereof, in particular to a cold-rolled steel plate for an automobile noise reduction sheet and a production method thereof, and belongs to the technical field of iron-based alloys. Background technique [0002] The main function of the car silencer is to combine with the car brake pads to reduce the noise during the friction process. Therefore, the key performance requirements of the steel plate for the automobile noise absorber are high strength and good plate shape, so as to ensure that the sound absorber and the brake pad are well bonded and have high strength. The steel for cold-rolled automobile sound-absorbing sheets requires a tensile strength of more than 590MPa, a wave height within 2m along the rolling direction of the steel plate ≤4mm, and a surface roughness of the steel plate Ra≤0.6μm. [0003] The key to the production process of cold-rolled steel sheets is to ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/26C21D8/02C21D9/52C22C38/02C22C38/04C22C38/06
CPCC21D1/26C21D8/0226C21D9/52C21D2211/005C21D2211/009C22C38/002C22C38/02C22C38/04C22C38/06
Inventor 刘洪李雯
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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