JP3000706U - Electrode disk for seam welding - Google Patents

Abstract

(57) [Summary] [Objective] Electrode disk with tungsten alloy attached to the outer circumference of the electrode disk for seam welding [Composition] The center part 1 of the conductive function part and the outer part 2 of the durability function part are Attached or diffusion bonded

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electrode disc of a seam welding machine, in which a tungsten alloy material having a high melting point is brazed or diffusion-bonded to the outer periphery of the electrode disc.

[0002]

[Prior art]

 When performing seam welding, the usage status of the electrode discs is examined. The upper and lower electrode discs are pressed through the weldment, and rotation and energization are performed. During this welding operation, welding heat is generated in the welded portion. Conventionally, this electrode disk has been made of a copper alloy such as chrome copper or beryllium copper that does not hinder the conduction of welding current. However, in addition to the fact that the softening temperature of these materials in practical use is close to the welding temperature, the shape of the electrode disk softens and deforms due to the application of the pressing force and the rotating force, and correction work was frequently required.

[0003]

[Problems to be solved by the device]

 Therefore, there is a need for a material that can obtain stable seam welding results by reducing the shape deformation of the electrode disk. In addition, when seam welding various new materials, new demands have arisen, such as not wanting the copper component to come into direct contact with the welded material for reasons such as prevention of electrical contact.

[0004]

[Means for solving the problem]

 In the past, as a method for solving these problems, the compositional study of a copper alloy material satisfying all the functions centering on the conductive function has been conducted, but in the present invention, the function of the electrode is divided and configured. I thought about it. First, looking at the functionality of the electrode disc, it is a function that guides electricity to the center of the disc. It is a function that receives external heat such as welding heat, pressure, and rotational movement during welding work on the outer periphery of the disc. Or the function to eliminate the copper component. Next, looking at the properties of the materials, the ones that are suitable for conducting electricity are chromium copper and beryllium copper that have been used conventionally. As a material that withstands external force or eliminates the copper component, a high melting point tungsten material and a good conductor of silver and copper are used as a sintered alloy, but the conductivity function is somewhat inferior. As a structure incorporating these divided functions, we adopted a method that uses chromium copper and beryllium copper, which are good conductors, in the central part and uses tungsten alloy in the roll or diffusion bonding to the outer peripheral part where durability is required. It is a thing.

[0005]

[Action]

 As a result, the durability and weldability of the electrode disk can be improved without loss of welding energy due to electrical resistance at the center.

[0006]

【Example】

 Using this method, it is possible to make electrode discs that meet the various conditions required for weldments, and it is also possible to adapt seam welding of new materials. In addition, it is possible to maintain uniform welding conditions for a long time without shape deformation and to improve weldability, which can minimize line stop loss due to electrode modification when incorporating a seam welder into an automatic production line, and improve quality. This will increase stability in management.

[Brief description of drawings]

FIG. 1 is a sectional view of the present invention.

FIG. 2 is a front view of the present invention.

[Fig. 3] Side view of a seam welder mounting example of the present invention

[Explanation of symbols] 1 is the center of the electrode disc 2 is the outer periphery of the electrode disc 3 is the power source of the seam welding machine 4 is the upper electrode power feeding mechanism of the seam welding machine 5 is the lower electrode power feeding mechanism of the seam welding machine 6 is seam welding Machine upper electrode pressurizing cylinder 7 is upper electrode disc 8 is lower electrode disc

Claims (1)

[Scope of utility model registration request] 1. An electrode disk in which a tungsten alloy is attached to the outer periphery of an electrode disk for seam welding.