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Stainless steel sealing specially-shaped electrode for resistance spot welding

A resistance spot welding and stainless steel technology, applied in the field of electrodes, can solve the problem that straight rod electrodes cannot be spot welded, and achieve the effect of reliability and simple replacement.

Inactive Publication Date: 2012-07-18
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to disclose a stainless steel resistance spot welding sealed special-shaped electrode structure, which can complete the spot welding of the roof corrugated plate at the bent beam of the car roof and the roof side roof plate, and solve the problem that the straight rod type electrode cannot be spot welded

Method used

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  • Stainless steel sealing specially-shaped electrode for resistance spot welding
  • Stainless steel sealing specially-shaped electrode for resistance spot welding
  • Stainless steel sealing specially-shaped electrode for resistance spot welding

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Embodiment Construction

[0009] refer to figure 1 , the main body 2 is processed into a half-shaped I-shaped with CrZrCu at one time, the Vickers hardness is greater than 145, the Rockwell hardness is greater than 75, and the electrical conductivity is greater than 70%. It is softened at a high temperature. The high temperature softening temperature is 500 degrees Celsius. The standard conforms to JISSZ3234. The upper end of the main body is interference-fitted with a replaceable straight-rod circular electrode head 2 , the lower end of the main body is T-shaped with a taper, and a cooling water hole 3 is opened in the center. The main body is equipped with a disassembly position, and a plane 4 of 15mmX17mm is processed at the position of the round bar of Φ35, and two places are processed symmetrically front and back, so as to realize the replacement of the main body and the straight electrode. The conical surface of the main body and the electrode bank of the spot welding equipment must be protected...

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Abstract

The invention relates to a stainless steel sealing specially-shaped electrode for resistance spot welding, which is characterized in that a main body is formed by processing a copper block one time into a half-I shape, the upper end of the main body is in interference fit with a interchangeable straight-rod round electrode head, the lower end of the main body is of a T shape with conicity, and the center of the main body is provided with a cooling water hole. By adoption of the half-I shaped copper main body, the spot welding of a side top plate and a corrugated plate of a vehicle roof is realized, wherein the side top plate and the corrugated plate are located on the half-surrounded part of the lower part of a beam shaped like a Chinese character ''yi''. In addition, the sealing specially-shaped electrode can be interchanged with a lower straight electrode of a pair of C-shaped welding pliers and forms a spot welding loop with an upper straight electrode of the pair of C-shaped welding pliers to meet welding requirements, and the interchange of the sealing specially-shaped electrode with the straight electrodes is easy, quick and labor-saving. Due to the circulating cooling water hole additionally arranged in the specially-shaped electrode, when the specially-shaped electrode is used for the spot welding, welding parameters of a large current and a short time are supplied to the specially-shaped electrode, and a large amount of heat is produced, the specially-shaped electrode is cooled by cooling water timely, so that the spot welding can be carried out continuously, and the reliability and the continuity of the production can be realized.

Description

technical field [0001] The invention relates to a spot welding tool, in particular to an electrode used for resistance spot welding of vehicles made of stainless steel. Background technique [0002] Stainless steel vehicles have gradually occupied the dominant position in the urban railway vehicle market, and the market demand is increasing, and stainless steel vehicles adopt resistance spot welding technology, which requires spot welding equipment to implement spot welding on the structure of the vehicle. The roof structure of stainless steel vehicles is relatively complicated. The equipment for spot welding the roof is a C-shaped structure. When spot welding the roof corrugated plate at the roof curved beam and the roof side roof plate, due to the influence of the surface structure of the roof curved beam with a width of 38mm, the roof corrugated part of the lower semi-enclosed part of the "already" shaped beam cannot be realized Spot welding of plate and side roof plate....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/30
Inventor 康丽齐
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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