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Welding process of quenching partition steel QP980 for automobile

A technology of quenching distribution and welding process, which is applied in the welding of straight seams, welding equipment, and roller electrode welding, etc., can solve the problems of low processing efficiency, difficult welding of high-strength steel, and difficult welding.

Active Publication Date: 2020-08-14
攀钢集团西昌钢钒有限公司
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Problems solved by technology

[0004] However, due to the difficulty of welding high-strength steels, especially for quenched and partitioned steels, the welding is difficult, resulting in low processing efficiency

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  • Welding process of quenching partition steel QP980 for automobile

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Embodiment Construction

[0023] The core of the present invention is to provide a welding process for quenching and distributing steel QP980 for automobiles, which is used for welding the quenching and distributing steel QP980 to improve welding efficiency and connection strength.

[0024] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Please refer to figure 1 , figure 1 It is a flow chart of a specific embodiment of the welding process of the quenched and distributed steel QP980 for automobiles provided by the present invention.

[0026] In this embodiment, the welding process of quenched and distributed steel QP980 for automobiles includes the following steps:

[0027] Step S1: Obtain the strip steel coils of quenched and allocated steel QP980 and the strip steel coils of transitional carbon structu...

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Abstract

The invention discloses a welding process of quenching partition steel QP980 for an automobile. The welding process of the quenching partition steel QP980 for the automobile comprises the steps that:Step S1, a strip steel coil of the quenching partition steel QP980 and a strip steel coil of transitional carbon structural steel are obtained; Step S2, the tail steel part of a previous coil and thehead steel part of a next coil are cleaned; Step S3, welding parameters are adjusted and the tail steel part of the previous coil and the head steel part of the next coil are lap-welded; and Step S4,the strip steel coil of the quenching partition steel QP980 and the strip steel coil of the transitional carbon structural steel are alternately arranged and welded in sequence. A narrow lap welding machine can be used between the quenching partition steel QP980 and the transitional carbon structural steel. The transitional carbon structural steel is increased through intervals, so that the narrowlap welding machine can realize the connection between each coil of the quenching partition steel QP980 on a continuous annealing production line, and the welding efficiency is high, the welding seamarea is flat and smooth, the welding seam and welding wheel are not scarred, and is convenient for use in the automobile manufacturing industry.

Description

technical field [0001] The invention relates to the field of welding technology of QP980 steel, in particular to a welding technology of QP980 quenched distribution steel for automobiles. Background technique [0002] Welding strip steel to realize continuous production of iron and steel enterprises is an important technological means to improve production efficiency, reduce production costs and expand benefits. [0003] In the prior art, in order to overlap the steel strip, a narrow lap welding machine is usually used for welding. The narrow lap welding is to overlap two pieces of material (strip steel), pressurize and pass current, and use the resistance of the material itself , The heat generated by the concentrated resistance between the materials and the contact parts between the materials and the electrodes raises the temperature of the materials and finally melts and welds them. [0004] However, due to the difficulty in welding high-strength steels, especially for q...

Claims

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Application Information

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IPC IPC(8): B23K11/06B23K11/34
CPCB23K11/06B23K11/34B23K11/061
Inventor 熊凌荣王德宇陈俊周三保
Owner 攀钢集团西昌钢钒有限公司
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