1800 MPa ultrahigh-strength thermoforming steel plate resistance spot welding technique

A resistance spot welding, ultra-high-strength technology, applied in resistance welding equipment, resistance electrode bases, electrode features, etc., to achieve the effect of improving the process environment, good solder joint formation, and no macro defects

Inactive Publication Date: 2019-12-10
SHENYANG UNIV
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Problems solved by technology

Solve the problem of resistance spot welding when this ultra-high-strength hot-formed steel plate is used in automobile production, and ensure the quality of such welded joints

Method used

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  • 1800 MPa ultrahigh-strength thermoforming steel plate resistance spot welding technique
  • 1800 MPa ultrahigh-strength thermoforming steel plate resistance spot welding technique
  • 1800 MPa ultrahigh-strength thermoforming steel plate resistance spot welding technique

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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with examples.

[0021] In the invention, two ultra-high-strength hot-formed steel plates are overlapped and placed on the working machine tool of the resistance spot welding robot, and the welding is performed after parameters are adjusted through a teaching panel. Ultra-high-strength hot-formed steel is the same steel grade and has the same thickness. The resistance spot welding robot uses the same type of electrode with the same end surface area. The specific method described is: lap two pieces of ultra-high-strength hot-formed steel together and tighten them with a clamp, use the resistance spot welding robot to teach the panel, set The path adjusts the position of the electrode so that the welding part is located at the center of the overlapping part. Add a welding command on the teaching panel and change the welding pressure. After adjusting the welding parameters through the welding machine, i...

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Abstract

The invention discloses an 1800 MPa ultrahigh-strength thermoforming steel plate resistance spot welding technique, and relates to a high-strength steel plate spot welding technique. According to the1800 MPa ultrahigh-strength thermoforming steel plate resistance spot welding technique, two ultrahigh-strength thermoforming steel plates are lapped together, and are clamped with a clamp; a resistance spot welding robot teaching panel is used; electrode positions are adjusted by designing a path, so that a welding part is located at the central spot of a lapping part; a welding command is addedon the teaching panel, and welding pressure is changed; after welding parameters are adjusted through a welding machine, one welding process is finished by inputting the welding command; and a resistance spot welding connector is formed. By adopting the technique, a manufacturing technique which can perfect ultrahigh-strength thermoforming steel plates can be provided, so that the ultrahigh-strength thermoforming steel plates can be strongly combined during manufacturing, and therefore comprehensive performance of products is obviously improved.

Description

technical field [0001] The invention relates to a spot welding process for high-strength steel plates, in particular to a resistance spot welding process for 1800MPa-level ultra-high-strength hot-formed steel plates. Background technique [0002] Ultra-high-strength steel is the development trend of future automotive materials. Although lightweight materials such as aluminum alloys, magnesium alloys, and carbon fibers are also used in current automobile manufacturing, due to some of their own shortcomings, such as high cost and poor corrosion resistance, they are cost-effective in manufacturing. It is not high, so steel is still the main raw material in automobile production. According to research, if the mass of the car is reduced by 100kg, it means that more than 300L of fuel will be saved in the 150,000km distance, which greatly reduces the use of energy and the emission of pollutants. The 1.0-2.5mm thick ultra-high-strength hot-formed steel plate plays an important rol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/11B23K11/34
CPCB23K11/11B23K11/31B23K11/36
Inventor 刘岩叶海青姚宇刘佳朋周桂申
Owner SHENYANG UNIV
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