JPS6234687A - Production of joining member - Google Patents

Abstract

PURPOSE:To increase the joining accuracy and joining strength of the metallic compound sheet for decoration by constraining the outer periphery of a multilayer material by plural members and by joining the remaining outer peripheral face of the multilayer material by diffusion with pressing it. CONSTITUTION:The constraining member is formed by the main body 5 of the constraining member and pressure member 6. The main body 5 of the constraining member is assembled with more then two pieces of members. Plural metallic sheets (angle) having different materials of pure silver and pure copper, etc. are charged by overlapping alternately into this detachable joining container. The necessary joining pressure is given to the multilayer material by fitting a pressing member 7 into the through hole 5a of the main body 5 of the constraining member and by pinching the charged multilayer material between the space with the pressure member 6. since plates 8, 8 are inserted as well by abutting to the inner peripheral face 5c of the main body 5 of the constraining member. If necessary, an intermediate plate 9 is inserted between the pressure member 6 and pressing member 7. The necessary joining member is obtd. by raising the temp. of the inside of this container by keeping it in the prescribed vacuum and by joining with diffusion by a fixed pressure under uniform heating.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention is a method for diffusing a multilayer material formed by stacking a plurality of metal plates or square metal rods of different materials, or a plurality of both. The present invention relates to a method for manufacturing a joining member in which these metal plates and/or square metal bars are joined together by joining them together, and in particular, a method for manufacturing such a joining member using a decomposable joining container. It's about how to do it.

[Conventional technology]

In general, bonded members made by bonding dissimilar metals together, such as watch bands, watch cases, watch dials, eyeglass frames, etc.
Conventionally, bonding members commonly used in accessories such as rings, bracelets, brooches, sundants, lighters, cigarette cases, buckles, tie clips, cufflinks, and fountain pens, as well as various crafts, have been made of metal surfaces. Forge welding method and roll pressure welding method to join metallurgically.

It is manufactured by various methods such as explosion bonding method and extrusion method.

However, in all of these bonding methods for bonding metal materials, it is difficult to maintain the thickness of each bonding layer at a predetermined dimension because the amount of deformation of the metal materials due to the heat compression process during bonding is extremely large. Especially the accessories and accessories mentioned above.

When joining dissimilar metals with different tones in the production of various crafts, etc., the difference in the amount of deformation between the dissimilar metals increases, making it difficult to form regular beautiful patterns. .

Since the number of layers that can be bonded is limited to 2 to 3 layers at most, the present inventors first attempted to bond dissimilar metals to produce a decorative metal composite plate. We adopted the diffusion bonding method, which minimizes the amount of deformation of the metal material (
Japanese Patent Application Laid-Open No. 55-30326 and Patent Application No. 7919-1983
No. 4).

[Problem that the invention seeks to solve]

However, the diffusion bonding method involves applying high pressure under high vacuum and high temperature to bond metal materials.

When used to join multilayer materials made by stacking multiple types of metal plates or square metal bars made of different materials, the melting point, coefficient of thermal expansion, deformation resistance, etc. of each material that makes up the multilayer material differs. There is a difference in the amount of hot deformation between each material, and in the case of plates or square bars made of materials with a large amount of hot deformation, this will protrude to the edges of the multilayer material during joining, so each plate or square bar will be Not only will the thickness dimensions of the bonding layers become uneven, making it impossible to maintain the desired thickness of each bonding layer, but also the protrusion of the edges will result in a clean (unfinished) surface of the bonding members, which will result in The finishing process is time-consuming and labor-intensive, and the yield is reduced by 1. In addition, if the welding pressure is lowered or the welding time is further shortened to avoid the above-mentioned extrusion, the bonding strength of the finished bonded members decreases. There was a possibility that the bonding itself would not be achieved.

[Findings based on research]

Therefore, the inventors of the present invention have conducted various studies to solve such problems.

(1) When each metal plate or each square metal bar constituting the multilayer material is joined together by diffusion bonding to produce a joined member in which the multilayer material is integrated, the outer periphery of the multilayer material is The multilayer material is restrained by a restraining member that surrounds the multilayer material from the outer periphery in close contact with a part of the surface, and is pressed against the multilayer material while being in close contact with the remaining portion of the outer peripheral surface of the multilayer material. When the multilayer material is pressed by a moving pressing member,
(2) A container in which the multilayer material is accommodated by the restraining member and the pressing member, while the restraining member prevents the formation of the protruding portion; If the container is an excuse-type joining container in which the restraining member is disassembled into two or more separate members, it becomes easier to take out the joining member from the container after joining.

I found out.

[Failure to solve the problem]

This invention was invented based on the above knowledge, and it improves the joining accuracy of the joining member when manufacturing the joining member by joining dissimilar metals by diffusion bonding.
The purpose is to increase the bonding strength of it.

Multiple types of metal plates or square metal bars made of different materials.

Alternatively, by stacking a plurality of both of these on top of each other to form a multilayer material, and then joining each of the metal plates and/or square metal bars constituting this multilayer material to each other by diffusion welding, the multilayer material A method for manufacturing a joining member in which the multilayer material is integrated with a restraining member that is in close contact with a part of the outer peripheral surface of the multilayer material to surround and restrain the multilayer material from the outer periphery, and the remainder of the outer peripheral surface of the multilayer material. and a pressing member that presses against the multilayer material while in close contact with the multilayer material, and the multilayer material is charged into a one-disassembly joint container in which the restraining member is disassembled into two or more separate members. do.

The method is characterized in that the diffusion bonding is performed.

[Specific structure and operation of the invention]

Hereinafter, the specific structure and operation of the present invention will be explained.

1. Multi-layer material The metal material constituting the multi-layer material is 1. For example, the above-mentioned joints used for manufacturing accessories, ornaments, various crafts, etc.
If the component is to be manufactured, metals with different shades can be used, for example pure silver, pure copper or white.

Yellow and red gold alloys are used, and these materials are 1
For example, after being formed into a plate 1 as shown in FIG. 3 or a square bar 3 as shown in FIG.

They are stacked to form a multilayer material 2.4 made of three types of metals A, B, and C', and if necessary, these plates and square bars may be mixed to form a multilayer material. good.

2. Disassembleable jointed container (a) The restraint member, which is one component of the restraint member jointed container, consists of a restraining member main body 5 having a prismatic through hole 5a formed in the center, as shown in FIG. It is composed of a plate-shaped pressure receiving member 6,
The pressure receiving member 6 fits into the through hole 5a and closes the lower opening thereof, and the bottom surfaces of the pressure receiving member 6 and the restraining member main body 5 are placed on a pressure holder of a diffusion bonding machine.

The pressure receiving member 6, as shown in FIG. 2(a),
This is made larger in size than the opening of the through hole 5a, and brought into close contact with the bottom surface of the restraining member main body 5 from the outer periphery to close the lower opening of the through hole 5a. Alternatively, as shown in FIG. 2(b), the lower opening of the through hole 5a may be placed on the protrusion 5b formed on the inner periphery of the lower opening of the restraining member main body 5. to prevent the pressure-receiving member 6 from bending during pressurized joining.

This may be supported by the support member 10.

The restraining member main body 5 shown in FIG. 1 is a block-shaped integral piece, but this! l! Consisting of one or more members that can be expanded and folded as appropriate, or two or more members that can be assembled,
Of course, the restraining member main body 5 may be formed by assembling these members together using appropriate locking means 1 such as bolts and nuts. If it is composed of one or more collapsible members, it becomes easy to remove the joining member from the joining container after joining.

(b) A member that is fitted into the pressing member cloth, which is another component of the pressing member bonding container, and is tightly fitted into the through hole 5a by receiving the pressing force of the pressure rond of the diffusion bonding machine. The charged multilayer material is clamped between the pressure receiving plate 6 and the joining pressure necessary to manufacture the joining member is applied to the multilayer material.
As shown in the figure, if the wall is particularly thick, this pressing member 7
The parallelism when pressing the multi-layered material is precisely maintained, thereby achieving further improvement in joining accuracy.

(C) Side plate In a joining container having the above configuration.

In contact with the inner circumferential surface 5C of the restraining member main body 5,
When the two side plates 8, 8 are inserted facing each other as shown in the figure, not only can the end surfaces of the joining members be finished more neatly, but also after joining, the side plates 8, 8 can guide the joining members from the through hole 5a, Since it is easy to pull out from the through hole 5a, it can be used as an auxiliary member of the main joint container as needed.

(d) Intermediate plate Also, in the various joint containers described above, as shown in FIG.
When the intermediate plate 9 is inserted into the through hole 5a between the pressure receiving member 6 and the pressing member 7 and in contact with the pressure receiving member 6, the joining container is disassembled after joining and the joining member is removed from inside the through hole 5a. When taken out, the joining member easily comes out of the through hole 5a, so this intermediate plate can also be used as an auxiliary member of the main joining container if necessary.

Of course, materials that can withstand high temperature and high pressure are used as the materials constituting each member of the bonded container as described above.

For example, Cr: l2-14%, Mo: 5%, F
e: 0.5%.

A super heat-resistant alloy HA 713C having a composition consisting of Si: 0.5%, Co: 1.0%, and Ni: the balance (weight %) is advantageously used.

3. Bonding conditions The bonding conditions applied in this invention are not particularly limited, and various bonding conditions used in normal diffusion bonding can be applied, and the bonding temperature is appropriately determined mainly depending on the melting point of the materials to be bonded. generally 2'X 10-
1 under vacuum degree of 5~2 X I O''''' Torr
．． Bonding is carried out at a pressure of 3-3.3 kg/lu2. In this invention, the multi-layered materials are restrained from the outside by the welding vessel and joined while suppressing undesirable deformation of the materials during bonding, so higher pressure can generally be applied than in conventional diffusion bonding that does not use the welding vessel. .

[Examples and effects based on the examples]

Next, the present invention will be explained by examples and in comparison with comparative examples.

Example 1 Pure silver with a silver-white color and pure copper with a red copper color are used as raw materials. Prepare a plate with a thickness of 0.52U+, then cut out a metal plate with a width of 50m and a length of 260H. After degreasing 60 of each material metal plate, as shown in Figure 1. Inner dimensions (dimensions of through hole 1a): Silver plates and copper plates are stacked alternately and charged into a disassembleable joining container with width 50.2m x length 60.3m x height 80U, and diffusion welded. The temperature was raised while maintaining the degree of vacuum: 2 X I O-' Torr or higher in the machine, and soaking at 830°C was continued for 1 hour.

Diffusion bonding was performed under the conditions of maintaining a constant pressure of 9 tons at that temperature for 3 hours.

Next, when the joining member taken out from the joining container was cut into a 2B width in the thickness direction using a multi-wire cutter and the cut surface was examined, the width of each hue was 0.51 to 0.52B, and the overall thickness was is 61.6IILI+, and apart from the joint surface, 1 tension・ild, '25 kg/rt
It was an' woyo.

Example 2 Yellow-toned 18-gold alloy (Au: 75.15.Ag
: 20.0. Cu: 4.85. Figures are weight percentages (the same applies hereafter).

Gold alloy (Au: 75.15.Ag:
4.85°Pd: 20.0) and red 18 gold alloy (Au near 5.15.Ag: 5.0.Cu
: l 9.85) is used as the material. Each thickness: 0
．． Prepare a 32H11 board, then make a width of 50 pieces and a length of 6 pieces.
Cut out the metal plate 011111 and make each material metal plate 60
After degreasing each piece, it is a disassembleable jointed container that has the shape shown in Figure 1 and has internal dimensions of width: 50.2 mm x length: 60.3 B x height = class 100. The yellow, white, and red colors were stacked alternately in this order and charged in a diffusion welding machine, and the temperature was raised while maintaining a vacuum level of 2 X I O''' Torr or higher, and the temperature was increased to 800°C for 1 hour.
After continuing CI thermal heating, temperature: 8 as the first stage bonding.
00℃, pressure = 4-6 tons, held for 1.5 hours, temperature = 830℃, pressure crab 7-9 as second stage bonding
Bonding by diffusion bonding was carried out under the condition of holding at a temperature of 1.5 ton for 3 hours.

Next, the joining member taken out from the joining container was cut into 6 widths in the thickness direction using a multi-wire saw, and the cut surface was examined.The width of each hue was 0.30~0.32rnx, and The thickness is 55.9 mm, and the tensile strength at the joint surface ζ is z2kg/lu? That was it.

Note that in this example, no intermediate plate was used in the bonding container.

Example 3 A 18-gold alloy (Au: 75.15.A) with a white color tone
g: 4.85. Pd: 20.0) and yellow 1
Gold alloy (Au: 75.15.Ag: 12.5
．． The material is Cu: 12.35). Prepare a board with a thickness of 1.03B and a width of 5011'L.
After cutting out a metal plate with a length of 60yoa and degreasing 15 of each material metal plate, it had a shape as shown in Figure 1, and was 50.2mm wide x 60.3m long.
The white and yellow materials were placed in a decomposable bonding container with an inner dimension of 508 x height, stacked one on top of the other, and heated in a diffusion welding machine while maintaining a vacuum level of 2 x 10-'Torr or higher. After continuing soaking for 1 hour at 740°C, the temperature was near 40°C and the pressure =
Hold for 1.5 hours at 9 to 7 tons, temperature = 760°C as second stage bonding, 3 at pressure crab 6 to 4 tons.
Diffusion bonding was carried out under the conditions of time hold.

Next, the joining member taken out from the joining container was cut in the thickness direction with a multi-wire saw to a width of 2 ul + width, and when the cut surface was examined, the width of each hue was 1.00 to 1.02 mm.
m, the total thickness was 45.6++tm, and the tensile strength at the joint surface was 20 kg/mx2 or more.

Comparative Example Next, for comparison, other materials were used, except that the decomposable joint container according to the present invention was not used in a multilayer material formed by stacking the same metal plates as those joined in Example 3. Diffusion bonding was performed under the same conditions as in Example 3 to produce a bonded member.

This joining member was cut 2B in the thickness direction using a multi-wire saw.
When I cut it at the width and examined the cut surface, the width of each hue was 0.55M for yellow, 1.01ffOI for white, and 0.36U for red.
The total thickness was 28.8L11, and the tensile strength at the joint surface was 7 to 10 ky/Mx2.

From the above results, it can be seen that the present invention, which uses a one-disassembly type joining container, can produce a joining member having better dimensional accuracy and joining strength than the comparative example.

[Comprehensive effect of the invention]

As is clear from the above description, according to the present invention, plates or square bars made of multiple types of metal materials can be accurately joined with excellent joining strength. The present invention can provide an industrially useful effect in that a durable joint member with a precise and beautiful finish can be provided at a high yield in the fields of ornaments, various crafts, and the like.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the disassembleable joint container used in the present invention, broken down into individual constituent members, and Fig. 2 is a vertical cross-sectional side view showing a modified example of the restraint member incorporated into the disassembleable joint container. FIGS. 1, 3, and 4 are views showing examples of multilayer materials joined according to the present invention. In fig. 1...Metal plate, 2, 4...Multilayer material. 3... Metal square bar, 5... Restraint member body. 6... Pressure receiving member, 7... Pressing member, 8...
...Side plate, 9...Intermediate plate.

Claims (7)

[Claims] (1) A multilayer material is formed by stacking a plurality of metal plates and/or square metal bars made of different materials on top of each other, and then each metal plate and/or each metal constituting the multilayer material is stacked on top of each other. In the method of manufacturing a jointed member in which the multilayer material is integrated by joining square bars to each other by diffusion welding, the multilayer material is bonded to the outer circumference of the multilayer material in close contact with a part of the outer peripheral surface of the multilayer material. a restraining member that surrounds and restrains the
a pressing member that presses against the multilayer material while being in close contact with the remaining portion of the outer peripheral surface of the multilayer material, and the restraining member is disassembled into two or more separate members; The method for manufacturing a bonding member, comprising charging the multilayer material into a container and performing the diffusion bonding. (2) In the bonded container, the restraint member includes a restraint member main body having a prismatic through-hole, and a pressure-receiving member that closes one opening of the through-hole;
Claim 1, characterized in that the multilayer material is inserted into the through hole from the other opening of the through hole so as to be freely pushable, and the multilayer material is clamped and pressurized with the pressure receiving member. A method for manufacturing a joining member. (3) In the joint container, the side plate has one side brought into close contact with the inner circumferential surface of the restraining member main body facing the through hole,
The method for manufacturing a joining member according to claim 2, wherein the joining member is inserted into the through hole. (4) In the joint container, an intermediate plate is inserted between the pressure receiving member and the pressing member in contact with the pressure receiving member, or The method for manufacturing a joining member according to item (3). (5) In the joint container, the pressing member is made of a particularly thick member, as described in any one of claims (2) to (4). A method for manufacturing a joining member. (6) In the joint container, the restraining member main body is composed of a block-shaped integral piece;
A method for manufacturing a joining member according to any one of claims (2) to (5). (7) In the joint container, the restraint member expands,
Any one of claims (2) to (5), characterized in that it is composed of one or more foldable members or a plurality of assembleable members. A method for manufacturing a joining member according to.