JPH0721278U - Brazing material for joining parts by high frequency induction heating - Google Patents

Abstract

(57) [Summary] [Purpose] By applying a secondary current to the brazing material itself,
The brazing time can be shortened and the work efficiency can be improved.
Provided is a brazing material for joining members by high frequency induction heating. [Composition] A brazing material for a joining portion of one member and the other member is arranged, and at the same time, the joining portion is induction-heated with a high-frequency current to fix both members with the brazing material. The endless shape that substantially matches the outer diameter shape of the joint is formed, and during induction heating, a secondary current is also applied to the brazing material to promote its melting.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a brazing material for joining members by high-frequency induction heating when a pair of members is brazed by a high frequency induction current.

[0002]

[Prior art]

 Conventionally, for example, when brazing a pair of pipes by a high frequency induction current, it is performed as shown in FIG. That is, one pipe 13 is inserted into the other pipe 12 to a predetermined position, and the rod-shaped silver brazing material 11 which is a brazing material is wound around the joining portion 14 of both pipes 12 and 13 substantially once to form a ring shape. Alternatively, the silver solder 11 formed in advance in a ring shape is inserted from the pipe 13 side and positioned at the joint portion 14. Then, in this state, the heating coil 15 is arranged around the joint portion 14, a high frequency current is supplied to the heating coil 15 from the high frequency inverter device 16, and the pipes 12 and 13 are heated by induction. , The silver solder 11 is melted, and both pipes 12 and 13 are brazed and fixed.

[0003]

[Problems to be solved by the device]

 However, the above brazing material has a problem that the working efficiency is poor, such as a long brazing time. That is, although the silver solder 11 is formed in a ring shape according to the shapes of the pipes 12 and 13, since both ends thereof are separated from each other, a secondary current (induced current) is generated in the silver solder 11 itself during induction heating. Not flowing. Even if both ends of the silver solder 11 are in contact with each other as shown in FIG. 5, the two ends are deformed and separated by heating, so that the silver solder 11 itself receives a secondary current. It does not flow continuously. Therefore, the silver wax 11 is melted only by heating by the secondary current flowing through the pipes 12 and 13, and it takes a long time by itself. For example, in a product having many joints 14 of the pipes 12 and 13, The work efficiency of brazing will be inferior.

The present invention has been made in view of the above circumstances. An object of the present invention is to reduce the brazing time and improve work efficiency by supplying a secondary current to the brazing material itself. It is to provide a brazing material for joining members by high frequency induction heating.

[0005]

[Means for Solving the Problems]

 In order to achieve such an object, the brazing material for joining members by high-frequency induction heating according to the present invention has a brazing material arranged at the joining portion of one member and the other member, and the joining portion is induction-heated with high frequency current. Then, in the case where both members are fixed by the brazing material, the brazing material arranged in the joint is formed in an endless shape that substantially matches the outer diameter shape of the joint.

[0006]

[Action]

 According to the brazing material for joining members of the present invention, since the brazing material is formed into an endless shape in which both ends are joined, an induced current also flows into the brazing material during heating and the brazing material melts quickly. . This improves the working efficiency of brazing, such as shortening the brazing time.

[0007]

【Example】

 An embodiment of the present invention will be described below in detail with reference to the drawings. 1 and 2 show a plan view and a side view of a brazing material according to the present invention. In the figure, the brazing material 1 is formed into a ring shape, for example, silver brazing material, that is, an endless shape having no seam by punching, die molding, or the like.

The brazing material 1 is brazed as shown in FIG. That is, the one end 3a of the pipe 3 is inserted to the predetermined position in the one end 2a of the pipe 2 which is the joining member. Then, the brazing material 1 is inserted from the other end of the pipe 3 and positioned at the joint 4 of the pipes 2 and 3. At this time, even if the brazing material 1 is inserted from the one end 3a of the pipe 3 in advance, the pipe 3 is inserted into the pipe 2 and then the brazing material 1 is placed in the joining portion 4. Good.

In this state, a heating coil 5 having an appropriate shape is positioned around the joint portion 4, and, for example, a foot switch 7 is stepped on to operate the high frequency inverter device 6. When the inverter device 6 operates, a high-frequency current is supplied to the heating coil 5, and this current induces a secondary current, that is, an induced current, in the joint portion 4 of the pipes 2 and 3. In addition, an induced current is also induced in the brazing material 1 arranged in the joint portion 4, and the induced current causes the joint portion 4 of the pipes 2 and 3 to be induction-heated and the brazing material 1 to be melted. A part of the melted brazing material 1 enters between the joint surfaces of the pipes 2 and 3 by the capillary phenomenon, and the joint portion 4 is brazed.

As described above, according to the above-described embodiment, the induced conductive flow also flows through the endless brazing material 1 at the time of heating. Therefore, heating by this current and the induced current flowing through the joint portion 4 of the pipes 2 and 3 is performed. By this, melting of the brazing material 1 is promoted, and the brazing material 1 is quickly melted. Therefore, the brazing time can be shortened, and the work efficiency can be improved for a product having many joints of the pipes 2 and 3, for example.

In the above embodiment, the brazing material is formed into a ring shape, but the present invention is not limited to this. For example, when the joining member is a square pipe, the brazing material is formed into a square shape and the joining is performed. It may be formed in a shape according to the outer diameter shape of the power member.

[0012]

[Effect of device]

 As described above in detail, according to the brazing material for joining members by high frequency induction heating of the present invention, an induction current can be passed through the brazing material itself, which promotes melting of the brazing material and reduces the brazing time. The effect is that the work efficiency can be shortened and the working efficiency of brazing can be improved.

[Brief description of drawings]

FIG. 1 is a plan view of a brazing material according to the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a partially cutaway side view showing the brazing method.

FIG. 4 is a side view showing a conventional brazing material method.

FIG. 5 is a side view of the brazing material.

[Explanation of symbols]

 1 brazing material 2, 3 pipe (joining member) 4 joining part 5 heating coil 6 high frequency inverter device

Claims (1)

[Scope of utility model registration request] 1. A brazing material is arranged at a joint between one member and another member, and the joint is induction-heated by a high frequency current to fix both members with the brazing material. The brazing material is arranged at the joint. A brazing material for joining members by high-frequency induction heating, characterized in that the brazing material is formed into an endless shape that substantially matches the outer diameter shape of the joint.