JPH05161989A - Wide member - Google Patents

Abstract

PURPOSE:To constitute one wide member that the mechanical strength of joined part is strong and the appearance is beautiful by arranging over two members composed of the aluminum and/or the aluminum alloy and welding the contacting parts with laser beam. CONSTITUTION:Over two members of shape of the prescribed width extruded from an extruding machine or the rolled plate are arranged, the contacting parts are welded with laser beam and one wide member is composed, or the contacting surfaces of over two members are adhered with the adhesive agent, the contacting parts are welded with laser beam so that the forming layer of above adhesive agent is sealed, and one wide member is composed. Further, at the time for welding with laser beam the contacting parts of over two members, and, at least, one of filler material or Si powder is interposed at the contacting parts.

Description

Detailed Description of the Invention

[0001]

This invention relates to aluminum and / or
Alternatively, a wide member formed by arranging shape members of aluminum alloy (hereinafter referred to as aluminum material), shape members and plate members or plate members in parallel, and laser welding their contact portions to form one wide member. It is about.

[0002]

2. Description of the Related Art An aluminum material is obtained by placing a billet in an extruder, passing it through an extrusion die, and extruding it into a predetermined shape. The cross-sectional width of this extruded member is
When the upper limit is determined by the unique size of the extruder container and a wider extrusion member is desired, another extruder having a larger container size is used. However, there are cases where even that extruder cannot handle it, and at this time, each company asks only a few companies in Japan that have a large extruder that can obtain the desired extrusion width to manufacture. There is. Therefore, the production of these few machines cannot catch up even if they are in full-time operation, and it is the current situation that the market needs for wide members are not sufficiently met.

[0003]

Therefore, in order to obtain such a wide member, two or more members having a predetermined width extruded from the extruder are arranged in parallel, and the contact portions thereof are, for example, bonded or arc welded. A means of joining with is conceivable. However, even if a wide member can be provided, such a conventional technique requires a long time for the joining work, and requires extra work such as removing the extra portion of the joining part, and However, there is a problem in that it is not possible to obtain a product that is satisfactory in appearance, such as reliability, which is mainly mechanical properties, or welding distortion. The present invention solves the above-mentioned problems of the prior art, has a small excess of the joining portion, firmly joins the facing portions of two or more members arranged in parallel, and has a wide appearance with a beautiful appearance. It is intended to provide a member.

[0004]

The above object can be achieved by the following constitution. The configuration of the present invention is a shape member or a plate member made of an aluminum material, and a member having a predetermined width is
It is characterized in that a single wide member is formed by arranging them side by side and laser welding their contacting portions, and the facing surface of a shape member or a plate member made of two or more aluminum members arranged in parallel. Are bonded by an adhesive, and the contact portion is laser-welded so that the forming layer of the adhesive is sealed,
It is characterized in that one wide member is configured.
Further, in laser welding the contact portion of the shape members or plate members made of two or more aluminum materials arranged in parallel, at least one of the filler material and the Si powder may be interposed in the contact portion. In addition, it is also a feature.

[0005]

With the above-described means, the abutting portions of the two or more aluminum members which are arranged in parallel are firmly joined by laser welding. The adhesive layer applied and formed on the contact surface is sealed inside by laser welding, and as a result, does not come into contact with air and its quality does not change. When laser welding is performed, the joining becomes stronger by interposing a filler material or Si powder. In the above description, the extruded shape member has been described as the member forming the wide member, but a strong joining force can be obtained even with a plate member formed by rolling.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1A and 1B are cross-sectional views for explaining a joining mode of a contact portion between members forming a wide member according to the present invention. In FIG. 1 (a), reference numerals 1 and 2 are extruded shape members made of two aluminum materials having a predetermined width extruded from an extruder and having a so-called hollow structure including hollow portions 1b and 2b in a sectional shape. Is an example of.
The extruded shape members 1 and 2 are arranged in parallel with their end portions 1a and 2a facing each other, and the upper and lower contact portions 5 and 5 are intensively irradiated with a laser beam from a laser oscillator and laser-welded.
As the laser for this processing, any known solid-state laser such as Nd: YAG laser, CO ₂ laser, CO laser, or gas laser may be used. It is important for the laser welding conditions to select a state in which a sufficient penetration depth can be obtained at the joints of the members arranged in parallel. For example, if the laser oscillator is a CO ₂ laser and has a capacity of 5 kw,
A welding speed of about 4 m / mim. Is optimal, and this point is the same in the examples of the following figures.

FIG. 1 (b) shows an example of extruded shape members 1 and 2 having no hollow portion in cross section. The extruded shape members 1 and 2a are arranged in parallel with each other, and a laser is provided at the contact portion 5. A laser beam is intensively emitted from an oscillator to perform laser welding.

FIG. 2 is a cross-sectional view for explaining a joining form in the case where a filler material is provided at a contact portion between members constituting a wide member according to the present invention and welding is performed. The extruded profile members 1 and 2 having a hollow structure including hollow portions 1b and 2b in the cross-sectional shape are
The end portions 1a and 2a are arranged in parallel with each other, and the filler materials 6 and 6 are provided on the upper and lower contact portions 5 and 5, respectively.
6 irradiates the laser beam intensively from the laser oscillator,
Laser welding. In the contact portions 5 and 5, instead of the filler material,
Si powder may be interposed, and when the laser beam is intensively irradiated from the laser oscillator to the filler material or the Si powder, the irradiation parts of the extruded shape members 1 and 2 are efficiently melted by conduction heat, Form a weld.

FIGS. 3A and 3B are cross-sectional views showing another example for explaining the joining mode of the contact portions of the shape members forming the wide member according to the present invention. FIG. 3 (a)
As shown in Fig. 2, extruded profile members 1 and 2 having a so-called solid structure, which does not include a hollow portion in the cross-sectional shape, have end portions 1a and 2a.
The two are opposed to each other and arranged side by side, and an adhesive is applied and formed on the contact surface to adhere them. Reference numeral 7 is a forming layer of this adhesive. As the adhesive, a thermosetting resin such as phenol resin, epoxy resin, unsaturated polyester, which is a general-purpose structural adhesive, and a thermoplastic resin such as polyvinyl acetate, polystyrene, polyamide, polyacryl, methacryl resin are used as raw materials. An organic adhesive that is used, or an inorganic adhesive such as an alkali silicate, silica sol, or phosphoric acid adhesive can be used. The extruded shape members 1 and 2 are welded to each other so that the welding groove 8 is formed in advance, and the Si powder 6 ′ suspended in an organic solvent is provided near the surface of the welding groove. Apply with a brush or sprayer. The organic solvent has a high volatility, a small surface tension, and a large effect of dispersing Si powder, such as acetone, ethanol,
Methanol, benzene, petroleum solvent, etc. are used. Then, after the organic solvent is vaporized, the Si powder 6'is intensively irradiated with a laser beam from a laser nozzle 9 as shown in FIG. 3 (b), and is extruded by conduction heat from the Si powder 6 '. The materials 1 and 2 are welded to form the welded portion 4. If the welded portions 4 are formed on the front and back surfaces of the extruded shape members 1 and 2 facing each other, the joining force between the extruded shape members 1 and 2 is further enhanced. The adhesive forming layer 7 is completely sealed by laser welding.

4 (a), 4 (b) and FIG. 5 are sectional views showing still another example for explaining the joining form of the contact portions of the shape members constituting the wide member according to the present invention. Is.
As shown in FIG. 5, the extruded profile members 1 and 2 having a hollow structure including hollow portions 1b and 2b in their cross-sectional shapes have end portions 1a and 2a.
However, as shown in FIG. 4 (a), it has an open structure and has engaging portions 1c and 2c. An adhesive is previously applied to the outer surface of the engaging portion 1c and the inner surface of the engaging portion 2c, and the end portions 1a and 2a are opposed to each other and engaged in the direction of the arrow, as shown in FIG. 4 (b). , Glue. Reference numeral 7'denotes an adhesive forming layer for joining the engaging portions 1c and 2c. Then, the contact portion 5 of the extruded shape members 1 and 2 is intensively irradiated with a laser beam from a laser oscillator to perform laser welding. The adhesive forming layer 7'is completely sealed by laser welding and shielded from the outside air.

By adopting any one of the above-described joining forms, as shown in FIG. 6, the extruded shape members 1, 2 and 3 constituting the wide member are laser-welded at the contact portions 5, respectively. The wide member 10 is obtained. Although the extruded shape member is described as the member forming the wide member in the above-described embodiment, the same joining mode can be adopted for the plate member formed by the rolling process.

The following table briefly compares the wide member according to the present invention with a conventional wide member in which, for example, the welded portion is joined by arc welding or only with an adhesive.

[0013]

[Table 1]

[0014]

As described above, according to the present invention,
Two or more members of a predetermined width extruded from the extruder are arranged in parallel, and the opposing portions are joined by laser welding to form one wide member, so compared with the conventional joining means by arc welding, for example. As a result, the welding speed is high, and no extra work is required to remove the extra metal at the joint.
Therefore, while the joining work can be completed in a short time, the mechanical strength of the joined portion is large, and the reliability can be sufficiently satisfied. Furthermore, because laser welding is performed in the air and in minute spots, the material to be processed only heats locally, the welding speed is high as described above, and the heat input is small, so the material is affected by heat. It is possible to perform welding with less distortion, since there is little risk that the performance of the product will deteriorate. In addition, the welded portion does not rise, the appearance is beautiful, and a product similar to a large-sized extruded member can be obtained.

[Brief description of drawings]

FIG. 1A and FIG. 1B are cross-sectional views for explaining a joining mode of a contact portion between members forming a wide member according to the present invention.

FIG. 2 is a cross-sectional view for explaining a joining mode in the case where welding is performed by interposing a filler material at a contact portion between members constituting the wide member according to the present invention.

3 (a) and 3 (b) are cross-sectional views showing another example for explaining a joining mode of a contact portion between members constituting the wide member according to the present invention.

4 (a) and 4 (b) are cross-sectional views showing still another example for explaining the joining mode of the contact portions of the members forming the wide member according to the present invention.

5 is an overall cross-sectional view of FIG.

FIG. 6 is a side view of the wide member according to the present invention.

[Explanation of symbols]

 1, 2, 3 ... Extruded shape member 1a, 2a ... End portion 1b, 2b ... Hollow portion 1c, 2c ... Engaging portion 4 ... Welding portion 5 ... Contact portion 6 ... Filler material 6 '... Si powder 7,7 '... Adhesive forming layer 8 ... Weld groove 9 ... Laser nozzle 10 ... Wide member

Claims (3)

[Claims] 1. A shape member or plate member made of aluminum and / or an aluminum alloy, wherein two or more members each having a predetermined width are arranged in parallel, and their contact portions are laser-welded to form one wide member. A wide member characterized by being formed. 2. Aluminum and / or two or more juxtaposed.
Alternatively, a single wide member that is laser-welded so that the contact surface of a shape or plate made of an aluminum alloy is adhered with an adhesive and the contact forming portion seals the formation layer of the adhesive. A wide member, characterized in that 3. Aluminum and / or two or more juxtaposed.
Alternatively, at the time of laser welding the contact portion of a shape or plate made of an aluminum alloy, at least one of a filler material and Si powder is interposed in the contact portion.
Alternatively, the wide member according to claim 2.