JPH11179567A - Explosive welding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent adjacent base metal plates from joining to each other and to ensure firm joining between the base metal group and a sheet of clad material by arranging with spaces apart plural base metal plates having the same or different materials, shapes and dimensions and maintaining constant spaces between the base metal group and the sheet of clad material. SOLUTION: The height of a sand bed 5 is adjusted so that faces to be joined are approximately of the same height in three plates of a base metal group 2, which for example consists of one carbon steel plate having a thickness of 100 mm and a diameter of 400 mm and two round stainless steel plates having a thickness of 100 mm and 200 mm each and a common diameter of 400 mm, with these base metal plates placed on the bed 5 with about 50 mm space 9 apart in-between for example. A titanium sheet 1 as a clad material having for example a thickness of 3 mm, width of 450 mm and a length of 1,350 mm is then placed on the bed, with specific spaces 8 apart from these three plates of base metal group, and with an explosive 6 placed on full surface of the titanium sheet 1. By exploding this explosive 6 with an electric cap 7, the titanium sheet 1 is explosive-welded onto the upper face of the carbon steel and of the stainless steel plates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an explosive pressure bonding method for metal plates utilizing the explosive force of explosives.

[0002]

2. Description of the Related Art A clad plate obtained by explosive pressure bonding is required to have a combination of various metals. In general, a method of manufacturing a clad plate by an explosion pressure bonding method is a method in which a bonding material is joined to the entire surface of a flat base material, and this manufacturing technology has already been disclosed in many patents and literatures.
These clad plates are widely used as basic industrial materials.

[0003] Conventionally, when a joining material is to be joined to a base material group consisting of the same or different materials, shapes, and dimensions, a method of arranging one joining material for each base material and performing explosive pressure bonding has been adopted. And spent a great deal of time and effort. As an example of joining a plurality of base materials (composites) to one composite material (base material), for example, as disclosed in JP-A-50-29455, an annular composite material is formed on a part of the base material surface. Or one end surfaces of a plurality of mating materials of the same material butted together without any gap as in the invention of Japanese Patent Publication No. 44-6465 and Japanese Patent Publication No. 52-4500, for example. In the meantime, this is joined to one base material at the same time by a single explosion pressure bonding, and thereafter, a method of manufacturing a clad material in which a butt portion of the end surface of the joined material is welded, or for example, the method disclosed in As described above, a method of explosively bonding a joining material to an upper surface to be joined of a plurality of base materials of the same material and, at the same time, joining side surfaces of adjacent base materials together is a very difficult technique.

[0004]

However, in many cases, each of them has only one metal plate as a base material, and when there are a plurality of base materials, these adjacent base materials are joined together. In addition to the above technique, the materials, shapes, dimensions, and the like of the base materials need to be the same. Therefore, no study has been made on a method for simultaneously joining a plurality of base materials composed of the same or different materials, shapes, and dimensions to one sheet of a composite material.

In view of these circumstances, there has been a demand for an epoch-making method of explosive crimping which can simultaneously join a plurality of base material groups and one composite material by one explosion crimping. The present invention provides an explosion pressure bonding method capable of simultaneously joining a single laminated material and a base material group without joining a plurality of base material groups made of the same or different materials, shapes and dimensions to each other. The purpose is to provide.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have stated that a plurality of base materials made of the same or different materials, shapes, and dimensions are arranged at intervals from each other; By keeping the gap between the base material group and one piece of the bonding material constant, the base materials arranged adjacent to each other are not joined, and the base material group and one piece of the bonding material are firmly connected. The present inventors have found an explosion pressure bonding method for bonding to the dies, and have accomplished the present invention.

In the description of the present invention, the term "space" means the distance formed between adjacent base materials, and the term "gap" means the distance between the surfaces to be joined formed between the base material and the composite material. Respectively. That is, according to the present invention, a bonding material is arranged with a certain gap with respect to a surface to be joined of a base material which is left standing on a base,
In the method of explosion crimping to drive the composite material using the explosion energy toward the surface to be joined of the base material and to join the opposing surfaces, the base material is composed of a plurality of base material groups,
An object of the present invention is to provide a method of explosive crimping, wherein a certain interval is formed between each base material. The base material group and the bonding material here are not particularly limited as long as they are metal materials used for normal explosion compression bonding, such as steel materials and non-ferrous metal materials, similarly to the conventional explosion compression bonding method. Can also be applied as a material.

[0008] In addition to the use of a metal having the same material, size and shape as each base material, for example, when the same size and shape are used for different materials, or when the same material is used but the size and shape are different. Various arrangements are possible. In addition, if the base material shape is different,
It is possible to arbitrarily combine shapes such as disk, rectangle, column, and cone, and to arrange base materials with various plate thicknesses at the same time. Is possible. Here, the fixed interval refers to an interval provided on the end face of the base material so that the base material groups do not join with each other. What is necessary is just to keep the interval which a comrade does not contact. Specifically, it is desirable to form at least an interval of at least 3 mm or more, preferably at least the thickness of the composite material, or about the thickness of the base material in advance.

[0009] In addition, in order to keep the interval between the base materials reliably, it is preferable to arrange an intervening material made of metal or non-metal between the base materials. As a specific method of arranging the inclusions made of metal or nonmetal, for example, a molded body made of metal, wood, rubber, resin, paper, or the like cut out in advance according to the contour of the base material is used as the inclusion, and May be placed by inserting a base material into the base material, or metal, wood, rubber, resin,
Many small pieces made of paper, ceramics, or the like may be arranged between the base materials as inclusions. Further, for example, for a base material having a complicated contour, a liquid low-melting metal, a resin, or the like may be poured between the base materials, and may be arranged as inclusions by solidifying the material. It is possible to apply to a base material shape.

On the other hand, when arranging an inclusion made of metal, the position of the base material group fluctuates due to the collision of the joining material, and the inclusion and the base material are fixed in advance by welding so as not to hinder good joining. And good. In particular, when arranging nonmetallic inclusions, when using a material that is easily gasified by collision of the bonding material during explosion bonding, the surface facing the bonding material should be a thin metal plate or metal foil. It is important to coat in advance to prevent gas generation at the time of collision. As a material used for the surface coating of the inclusions, a thin plate made of stainless steel, an aluminum foil with an adhesive, a copper foil, or the like is effective, but not particularly limited to these materials.

Further, as another method for maintaining the interval between the base material groups,
There is a method of arranging a plurality of base materials on a base made of metal or non-metal at regular intervals between base materials, fixing the base materials to these base materials, and then mounting the base material on a base. As the base, any solid having rigidity such as a metal plate, a resin plate, and wood can be used without any particular limitation. Further, the base material may be fixed to the laying board instead of the base.

As a fixing method, for example, when fixing on a base made of metal, welding or using an adhesive, or when fixing on a base made of non-metal, such as, for example, wood or styrene foam, Using an adhesive, or
A concave shape may be formed on the base in advance according to the contour of the bottom surface of the base material, and the base material may be fixed by placing the base material in each of the concave portions. There is no particular limitation on the fixing method itself.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment will be described.

[0014]

Embodiment 1 Embodiment 1 of the present invention will be described with reference to FIG. One circular carbon steel sheet having a thickness of 100 mm and a diameter of 400 mm, a thickness of 100 mm, a diameter of 400 mm, and a thickness of 2
A set of three base materials 2 each of which is a circular stainless steel plate having a diameter of 00 mm and a diameter of 400 mm is adjusted. The height of the sand base is adjusted so that the surfaces to be joined are substantially at the same height. It was left on the base 5 at an interval 9 of about 50 mm. A fixed gap 8 is provided between these three base material groups, and a titanium plate 1 having a thickness of 3 mm, a width of 450 mm, and a length of 1350 mm is placed thereon as a bonding material, and an explosive 6 is placed on the titanium plate. It was fully mounted. The explosive was detonated by an electric detonator 7, and a titanium plate was explosively pressed on the upper surfaces of a carbon steel plate and a stainless steel plate. As a result of performing an ultrasonic flaw detection test on the obtained three clad materials, it was confirmed that almost all surfaces were joined.

[0015]

Embodiment 2 Embodiment 2 of the present invention will be described with reference to FIG. Three circular aluminum plates 2 each having a thickness of 15 mm and a diameter of 200 mm were previously drilled with holes in accordance with the contours of the aluminum plate to a thickness of 15 mm, a width of 250 mm, and a length of 7
The aluminum plate was fitted into a 50 mm rubber plate 3 such that the surface to be joined of the aluminum plate was facing upward. The surface of the rubber plate facing the surface to be joined of the bonding material is made of aluminum coating material 1.
0 was pasted. The assembly of the aluminum plate and the rubber plate is 10 mm thick, 250 mm wide, and 75 mm long.
It was left standing on a base 5 with a 0 mm wooden floor plate 4 interposed. A fixed gap 8 is provided between the base material group and an aluminum plate 1 having a thickness of 10 mm, a width of 250 mm, and a length of 750 mm is placed thereon as a bonding material, and the explosive 6 is placed on the entire surface of the aluminum plate. Was placed. This explosive was detonated by an electric detonator 7, and one aluminum plate was explosively pressed on three aluminum plates and the upper surface of a rubber plate. 15m thickness by explosion crimping
m, three aluminum plates with a diameter of 200 mm and a thickness of 10
Thus, a clad plate was obtained in which a single aluminum plate having a thickness of 250 mm, a width of 250 mm and a length of 750 mm was integrated. As a result of an ultrasonic inspection test of the obtained clad material, it was confirmed that almost all surfaces of the aluminum surfaces where the aluminum surfaces were subjected to explosive pressure bonding were joined.

[0016]

The explosion treatment capacity of the explosion crimping method of the present invention shown in Examples 1 and 2 is about three times as large as that of the conventional explosion crimping method. There is a considerable effect. In addition, as the number of materials to be a base material group increases,
The effect can be exerted greatly.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of Example 1.

FIG. 2 is a sectional view of an embodiment of Example 2.

[Explanation of symbols]

 1: Laminated material 2: Base material 3: Inclusions 4: Laying plate 5: Base 6: Explosive 7: Electric detonator 8: Gap 9: Spacing

Claims (6)

[Claims] 1. A bonding material is arranged with a predetermined gap from a surface to be joined of a base material left standing on a base, and the bonding material is driven toward a surface to be bonded of the base material using explosion energy. A method of explosive crimping, wherein opposing surfaces are joined to each other, wherein the base material is composed of a plurality of base material groups, and a certain interval is formed between the base materials. 2. A base material group comprising a plurality of same or different materials,
2. The method for explosive crimping according to claim 1, wherein the method comprises shape and size. 3. The explosion crimping method according to claim 1, wherein an intervening member made of a metal or a non-metal is arranged between the base materials. 4. The method for explosive crimping according to claim 3, wherein when the metal inclusion is disposed between the base materials, the inclusion and the base material are fixed by welding. 5. The method according to claim 3, wherein the step of arranging the non-metallic inclusions between the base materials includes previously covering the surface of the inclusions facing the joining material with a metal foil or plate. Explosion crimping method as described. 6. When arranging a plurality of base materials on a base made of metal or non-metal at intervals between base materials, these base materials are fixed to the base in advance. And the explosion crimping method according to 2.