JP2000135570A - Welding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve easy welding by putting an iron family metal as a welding intermediate material between members to be welded and bringing electrodes into contact with the members to be welded. SOLUTION: As a welding intermediate material 2, an iron family metal with low conductivity (normally iron) is used. Under the condition that this intermediate material 2 is put between members 1 to be welded, electrodes 3 are brought into contact with them from the top and bottom and current is applied at spots. As a result, the iron family metal with low conductivity or high electric resistance value generates high heat, melts, and is cooled and solidified, so that each of the members 1 is welded. If the iron family metal of the welding intermediate material 2 is copper-plated in advance, the entire copper-plating after welding can be made uniform. If a semi-solid or solid mixture of flux and metal powder such as iron, silver or brass is used as the welding intermediate material 2, the electric resistance value increases due to the flux to melt the metal powder, thus enabling the welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for electrically welding non-ferrous metals having high electrical conductivity, such as copper, brass, and aluminum. The present invention relates to a welding method for easily joining non-ferrous metals such as brass and aluminum.

[0002]

2. Description of the Related Art Conventionally, methods of joining metals include electric welding, gas welding, brazing, soldering, bonding, etc. In particular, non-ferrous metals having a high conductivity in the manufacturing process of decorative articles, crafts and the like. , But most of them were done by brazing.

[0003]

However, in the above-mentioned soldering, a metal having a lower melting point than each of the joining members is heated and melted by using a gas or the like to join the joint members. Otherwise, it is difficult to join, and the technique of bringing into close contact is a time-consuming operation, and a dangerous operation due to heating using a gas or the like.

[0004]

The present invention has been made in view of the above-mentioned problems,
It is a method that is created as a result of study, and is a method of electrically welding each joining member of non-ferrous metals such as copper, brass, aluminum, etc., and interposing an iron group metal as a welding intermediate material between the joining members, The welding electrode is brought into contact with the joining member and welded, and the welding intermediate material is plated with copper. In addition, metal powder and flux are mixed between the joining members as a welding intermediate material. A semi-kneaded or solid metal powder mixture is interposed, and a welding electrode is brought into contact with the joining member and welded.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method in which the joining of non-ferrous metals such as copper, brass, and aluminum is replaced by brazing and easy electric welding is performed.

[0006]

According to the welding method of the present invention, an electric welding of a non-ferrous metal having a high electric conductivity is used as a welding intermediate material to mix an iron group metal having a low electric conductivity or a metal powder with a flux to form a semi-kneaded or solid state. This is made possible by using a mixed metal powder.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the welding method of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view illustrating a general embodiment of a welding method according to the present invention, and FIG. 2 is a side view illustrating an embodiment in which a decorative portion of the welding method according to the present invention is extended. FIG. 3 is an explanatory side view of an embodiment in which the positions of the welding electrodes are changed in the welding method of the present invention.

The present invention relates to a method for electrically welding non-ferrous metals having high electrical conductivity, such as copper, brass, and aluminum.
The present invention relates to a welding method for easily joining non-ferrous metals such as brass and aluminum, and a method for electrically welding respective joining members 1 of non-ferrous metals such as copper, brass and aluminum. 1, an iron group metal is interposed as a welding intermediate material 2, and the respective welding electrodes 3 are brought into contact with and welded to the respective joining members 1;
It is a method in which copper plating is applied to the welding intermediate material 2 and, in addition, a method of electrically welding each joining member of non-ferrous metals such as copper, brass, and aluminum, between the respective joining members 1. A metal powder and a flux are mixed as a welding intermediate material 2 and a semi-kneaded or solid metal powder mixture is interposed, and the respective welding electrodes 3 are brought into contact with the respective joining members 1 and welded. Things.

That is, the joining member 1 embodying the present invention is a non-ferrous metal having high conductivity such as copper, brass, aluminum, etc., which are widely used for decorative articles, crafts, and the like. Even when the welding electrode 3 was brought into contact with each of the electrodes 1 and a current was passed, the electric conductivity was high, so that the material could not be heated as much as it melted, and it was impossible to perform electric welding.

The present invention enables the electric welding of non-ferrous metals having high conductivity such as copper, brass and aluminum. That is, as the welding intermediate material 2, an iron group metal having low conductivity, generally iron In this case, a welding intermediate 2 made of an iron group metal is interposed between the joining members 1.

As shown in FIG. 1, the welding electrode 3 is brought into contact with both upper and lower surfaces in a state where the welding intermediate member 2 is interposed between the respective joining members 1, and a current flows in a spot manner. An iron group metal having a low electric conductivity due to an electric current, that is, an iron group metal having a large electric resistance value generates high heat, is melted, and solidified by cooling, so that the respective joining members 1 are welded.

Further, according to a second aspect of the present invention, there is provided the welding method according to the first aspect, wherein the iron group metal of the welding intermediate material 2 is previously plated with copper. The entire copper plating can be made uniform.

In addition, in the welding method according to the third aspect of the present invention, a metal powder such as iron, silver, or brass is mixed with a flux as a kneaded material in the welding intermediate material 2 to form a semi-kneaded or solid material. In this case, a metal powder mixture formed into a shape is used. In this case, the electric resistance is increased by the flux, and the metal powder is melted to enable welding.

Further, in the embodiment in which the decorative portion 2a shown in FIG.
a is extended and welded, and the decoration applied to each joining member 1 is assisted by the welding intermediate material 2a. Depending on the ornaments, the decorativeness can be improved. .

Next, in the embodiment shown in FIG. 3 in which the position of the welding electrode 3 is changed, one joining member 1 is mounted on a mounting table, and the end of the joining member 1 is connected to the one welding electrode. 3
The welding intermediate 2 is placed on the upper surface of the one joining member 1, and the other joining member 1 is placed on the upper surface of the welding intermediate 2, and the other is placed on the upper surface of the joining member 1. The welding electrode 3 is abutted and welded, and can be implemented even if the welding electrode 3 is brought into contact with the welding electrode 3 at a distance from the welding surface to be welded.

[0017]

According to the present invention, a non-ferrous metal having a high conductivity is used as a welding intermediate, and a ferrous metal or a metal powder having a low conductivity is mixed with a flux to form a semi-kneaded or solid material. This is made possible by using a metal powder mixture formed into a shape, and enables easy welding, and is a highly practical invention.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a general embodiment of a welding method according to the present invention.

FIG. 2 is an explanatory side view of an embodiment in which a decorative portion of the welding method of the present invention is extended.

FIG. 3 is an explanatory side view of an embodiment in which the positions of the welding electrodes are changed in the welding method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Joining member 2 Welding intermediate material 2a Decorative part 3 Welding electrode A

Claims (3)

[Claims] 1. A method for electrically welding non-ferrous metal joining members such as copper, brass, aluminum, etc., wherein an iron group metal is interposed as a welding intermediate material between said joining members. A welding method wherein the respective welding electrodes are brought into contact with and welded to the joining member. 2. The welding method according to claim 1, wherein said welding intermediate material is plated with copper. 3. A method of electrically welding non-ferrous metal joining members such as copper, brass, aluminum and the like, wherein a metal powder and a flux are mixed between said joining members as a welding intermediate material and semi-kneaded. A welding method comprising: interposing a metal powder mixture in a shape or a solid shape; and welding and welding respective welding electrodes to the respective joining members.