JP4289598B2 - Brazing treatment method and apparatus using halogen lamp in combination with induction heating - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat treatment method and apparatus for a member such as brazing of parts made of components having different thicknesses by induction heating.
[Prior art]
[0002]
In the brazing process of the torque converter shown in FIG. 2, when a plurality of turbine blades 3 having a complicated shape are brazed to the spacer or the casing 2, it is difficult to uniformly heat the thin blade by induction heating. Conventionally, a method of brazing by heating the entire member with an electric furnace or the like has been performed.
[0003]
[Problems to be solved by the invention]
However, furnace heating such as the above-described electric furnace requires a large furnace facility, and furnace heating has a problem that it takes time.
On the other hand, as described above, high-frequency induction heating is convenient as a method for short-time heating or partial heat treatment, but high-frequency induction is used in the case of brazing thin plates or heating surfaces of members with severe irregularities. There is a problem that it is difficult to heat uniformly by heating.
[0004]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a method and an apparatus for heat-treating a member by solving the above problems by heating in combination with a halogen lamp and high-frequency induction heating.
[0005]
[Means for Solving the Problems]
According to the brazing heat treatment method of the present invention, in brazing a component constituted by brazing a thick member and a thin member, the thick member is induction-heated and the thin member is heated by a halogen lamp. both members poppy brazing is characterized in that to form the said part. Thus, efficient brazing can be performed by induction heating a thick member suitable for induction heating and heating a thin member difficult to induction heating with a halogen lamp. This is effective for brazing the turbine blade and casing of the torque converter described above.
[0006]
Further, the brazing heat treatment apparatus for a member according to the present invention includes a silica glass on one or more surfaces into which the component is inserted in brazing of a component constituted by brazing a thick member and a thin member. a plate is sealed provided chamber, and a halogen lamp for heating the thin member of the component which is charged into the chamber is transmitted through the silica glass plate, of the components in combination to the halogen lamp It has an induction heating means for heating a thick member . According to such an apparatus for heating the workpiece through the silica glass plate, the coolant is not applied to the halogen lamp when quenching and cooling the member, so that the lamp can be prevented from being damaged.
[0007]
In addition, the brazing heat treatment apparatus for members according to the present invention is characterized by comprising gas introducing means for introducing atmospheric gas into the chamber or vacuum means for evacuating the chamber. According to such an apparatus, for example, the member can be protected by atmospheric gas during brazing , or can be heat-treated while preventing oxidation by protecting it in a vacuum.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be specifically described with reference to the illustrated embodiments. Embodiments of the present invention is to brazing the turbine blades of the torque converter casing. FIG. 1 is a cross-sectional view of a heat treatment apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of a torque converter (work) that is a brazing member according to an embodiment of the present invention.
[0009]
Hereinafter, description will be made based on these drawings. In FIG. 2, the workpiece 1 according to the first embodiment has an inner casing 4 disposed inside an outer casing 2, and a plurality of blades 3 are mounted between the outer casing 2 and the inner casing 4. The blade 3 and the outer casing 2 are fixed by being brazed by inserting the projection 3b of the blade 3 into the hole 2a provided in the outer casing 2. Further, the blade 3 and the inner casing 4 are fixed by being brazed by inserting the projection 3a of the blade 3 into the hole 4a provided in the inner casing 4.
[0010]
The embodiment of the present invention performs this brazing . FIG. 1 is a cross-sectional view of the heat treatment apparatus 10. In the figure, the chamber 11 has a box shape in which a silica glass 12 is provided on the upper surface and is sealed. The workpiece 1 can be loaded and extracted into the chamber. A support base 13 for supporting the workpiece 1 is provided in the chamber 11, and the support base 13 is rotated by a shaft portion 13a to rotate the workpiece during heating.
[0011]
An induction heating coil 14 is provided below the workpiece 1 in the chamber 11 to heat the lower side of the workpiece 1. Exhaust gas is introduced into the chamber 11 through a conduit 11a, so that the atmosphere in the chamber can be adjusted. The chamber 11 can be evacuated by a conduit 11a. A halogen lamp 21 is provided on the upper side of the silica glass at the top of the chamber, and heat rays are concentrated on the brazing portion by the reflector 22 .
[0012]
The operation of brazing the member with the apparatus having the above configuration will be described.
The outer, assembles the inner casing and the blade, the workpiece 1 coated with brazing material to said braze charged into the chamber 11 and placed on the support table 13. Next, the chamber 11 is evacuated and the inside of the chamber 11 is evacuated or a non-oxidizing gas such as nitrogen is introduced. While rotating the workpiece 1, the thick lower casing portion is heated by the induction heating coil 14, and the thin upper blade is heated by the halogen lamp 21. Then, the brazing material applied to the brazing portion is melted and the member is brazed .
[0013]
When the brazing is completed, the work 1 is cooled and removed from the chamber 11 to complete. As described above, since the atmosphere in the chamber 11 is adjusted, the workpiece can be properly brazed without being oxidized. Such a workpiece cannot be heated uniformly by induction heating alone, but can be heated by halogen lamp heating.
[0014]
That is, since the casing is thick, it can be heated by induction heating, and since the shape is large and the heat capacity is large, induction heating is efficient. On the other hand, the blade has a small thickness and is difficult to increase in temperature by induction heating, but is suitable for halogen lamp heating because of its small heat capacity. In addition, since the casing assembled with the blade has a complicated shape, induction heating is difficult, but efficient brazing can be performed by combining induction heating and halogen lamp heating as described above.
[0015]
As described above, in the heat treatment method of the present invention, induction heating and a halogen lamp are used together to braze a member. Heating of a thin plate with a shape becomes possible. As a result, in the case of brazing the turbine blades of the torque converter, the cost can be reduced because rapid processing is possible and large equipment such as total heating by a furnace is not required .
[0016]
Thus, heat treatment can be efficiently performed by heating in combination with heating by a halogen lamp and induction heating.
[0017]
In addition , it is characterized in that local irradiation, such as the back side of a member, which is difficult to heat normally, can be performed by narrowing the beam of the halogen lamp and performing local irradiation.
[0018]
In addition, the heat treatment apparatus of the present invention provides a silica glass plate between the work and the halogen lamp, and permeates the silica glass plate to heat the work, so that the cooling liquid is applied to the halogen lamp during quenching. Will not be damaged.
[0019]
In addition, since the heat treatment apparatus of the present invention heats the work through the silica glass plate in a sealed case, the atmosphere to be treated can be freely controlled, so that the work is not oxidized and brazing is easy. it can.
[0020]
【The invention's effect】
As described above, according to the heat treatment method and apparatus of the present invention, a large facility such as furnace heating is not required, and the combined use of high- frequency induction heating and a halogen lamp makes it difficult to perform high-frequency induction heating alone. Since the member can be heated at a uniform temperature, the cost can be reduced, for example, by brazing a blade of a torque converter.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a heat treatment apparatus according to a first embodiment of the present invention.
FIG. 2 is a view showing a brazed portion of a work (torque converter) according to a first embodiment of the present invention.
[Explanation of symbols]
1 Workpiece (torque converter), 2 outer casing, 3 blades, 4 inner casing, 10 heat treatment device ( brazing device), 11 chamber, 12 silica glass plate, 13 support member, 14 induction heating coil, 21 halogen lamp, 22 a reflector

Claims (5)

In brazing of parts constituting the member and thin member thick brazed to member induction heating of thick and a thin member poppy brazing heating to both members by a halogen lamp the component A brazing treatment method using a halogen lamp in combination with induction heating . The brazing method according to claim 1, wherein the component is a casing of a torque converter . In brazing a component formed by brazing a thick member and a thin member, a chamber in which a silica glass plate is provided on one or more surfaces into which the component is inserted is sealed, and in the chamber A halogen lamp that heats the inserted thin member of the component through the silica glass plate; and induction heating means that heats the thick member of the component in combination with the halogen lamp. Brazing processing equipment that uses a halogen lamp in combination with induction heating . 4. The brazing apparatus according to claim 3, further comprising gas introducing means for introducing atmospheric gas into the chamber or vacuum means for evacuating the chamber . 4. The brazing apparatus according to claim 3, wherein the component is a casing of a torque converter .

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