JPH0716793B2 - Cladding board manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention uses an indirect heating method or an electric heating method to stack two or more types of cladding material plates having greatly different ductility and roll them to produce an electric or electronic material. The present invention relates to a method for manufacturing a cladding plate.

[Conventional technology]

In general, a method using an indirect heating method shown in a schematic cross-sectional view in FIG. 1 is employed to manufacture a cladding plate of different materials having greatly different ductility.

That is, as shown in FIG. 1, both the high-ductility cladding material plate 2 and the low-ductility cladding material plate 3 both unwound from the uncoilers 11 and 12 are embedded with the heater 6. The refractory material 7 and the pine cone 9 are fed into a heating furnace 10, heated in an inert gas or reducing gas atmosphere, fed to a rolling roll 4, and rolled to form a clad plate 1. It is molded.

[Problems to be Solved by the Invention] However, by using the above-mentioned conventional method, the cladding material plate 2 having a higher ductility and the cladding material plate 3 having a lower ductility are used.
When and are fed to the rolling rolls 4 and clad, the clad material plate 2 of the larger ductility rewound from the uncoiler 11
In many cases, wrinkles are often generated on the surface of the cladding material plate 2 while being heated in a long heating furnace 10. If the cladding material plate 3 is clad with the rolling rolls as it is, a clad plate having wrinkles on the surface is manufactured and cannot be shipped as a product, and the wrinkles may cause breakage due to external force.

[Means for solving problems]

Therefore, the present inventors, from the above viewpoints, as a result of conducting research to produce a wrinkle-free clad plate, a stepped roller is provided near the front of the rolling roll, and the stepped rollers are alternately arranged. Passing through the clad material plate with the larger ductility causes a slight tensile resistance, absorbs the difference in elongation at the time of clad caused by the difference in ductility, and at the same time prevents the formation of wrinkles by passing through the stepped rollers. I got the knowledge that.

The present invention has been made based on the above findings, and two or more types of cladding material plates having greatly different ductility are heated at high temperature in an inert gas or reducing gas atmosphere, and then pressure-bonded in layers to form a cladding plate. In the method for producing the above, a tensile resistance is imparted by passing the clad material plate having a higher ductility through a stepped roller arranged in front of the rolling roll, and then the one having a greater ductility imparted with the above tensile resistance. It is characterized by a method for producing a clad plate, in which the clad material plate and the clad material plate having a smaller ductility are stacked and fed to a rolling roll and rolled at a processing rate of 25 to 50%.

Here, the processing rate is set to 25 to 50% because if it is less than 25%,
This is because joining becomes insufficient, and if it exceeds 50%, the thickness ratio is not constant and a defective shape is likely to occur. To further improve the joining property, it is preferable to carry out rolling several times.

〔Example〕

Next, the method of the present invention will be specifically described by way of examples with reference to the drawings.

FIG. 2 is a schematic sectional view showing a manufacturing process of a cladding plate by the method of the present invention.

As shown in FIG. 2, the heating furnace 10 used in the method of the present invention is newly provided with stepped rollers 5, 5 ', 5 "and a guide 8, and the others are the same as those in FIG. Therefore, the description of the numbers in the drawings is omitted.
5 ′ and 5 ″ are arranged near the outlet of the heating furnace 10 or in the pineapple 9 and immediately before the rolling roller. Further, since they are exposed to high temperature, the material is manufactured by ceramics,
The structure is such that it can be moved vertically and horizontally depending on the thickness of the cladding material plate 2 having the greater ductility.

In the cladding plate manufacturing apparatus having such stepped rollers 5, 5 ′, 5 ″, the cladding material plate 2 having the larger ductility is rewound from the uncoiler 11 and heated in an inert gas or reducing gas atmosphere. Heated to a high temperature through 10
It is fed to the rolling roll while passing through the stepped rollers 5,5 ', 5 "alternately up and down. By alternately passing the stepped rollers 5,5', 5" up and down, the clad material plate with the larger ductility In No. 2, tensile resistance is added and the difference in elongation during rolling due to the difference in ductility is absorbed.

Further, by passing the stepped rollers 5, 5 ', 5 ", the wrinkles on the surface of the cladding material plate 2 generated during the heating by passing through the heating furnace 10 are removed, and the wrinkles on the surface are removed. Since the clad material plate 2 having the larger ductility is immediately fed to the rolling roll 4 and rolled, a clad plate having no wrinkles on the surface is manufactured.

On the other hand, since the clad material plate 3 having the smaller ductility has less elongation and less wrinkles due to heating, it is fed to the rolling roll 4 as it is.

In this way, the two types of cladding material plates that have been sent 2,
In No. 3, the clad plate 1 having the wrinkles on the surface is manufactured by overlapping and rolling with the rolling rolls.

Now, as the material of the cladding material plate 2 having a larger ductility, Ag, Au, Pt or Cu, which is known as a metal having a large ductility and having a good electric conductivity and thermal conductivity, is selected. Mo was selected as the material for the material plate 3.
The Mo is relatively difficult to bond and has poor workability, but has a thermal expansion coefficient close to that of Si and ceramics, and is relatively excellent in thermal conductivity. Because there is.

That is, as the cladding material plate 3 having the smaller ductility, a Mo plate having a length of 2000 mm, a width of 70 mm and a thickness of 1 mm is prepared, and a length of 1000 mm, a width of 70 mm and a thickness of 1 mm are prepared. SS with
The material was screwed and the leader was made into a coil,
Also, as the cladding material plate 2 with the larger ductility, the length: 2
000mm × width: 70mm × thickness: 1mm prepared Ag, Au, Pt or Cu plate respectively, length: 1000mm × width: 70mm
× Thickness: A SS material leader having a dimension of 1 mm was spot-welded into a coil shape.

The Mo plate coil is unwound from the uncoiler 12, heated through the heating furnace 10 and fed to the rolling roll 4, while Ag, Au,
The PT or Cu plate coil is also rewound from the uncoiler 11 and is heated in the heating furnace 10 while the different rolls 5, 5 '
5 ″ and a guide 8 are fed to the rolling roll 4. The temperature in the heating furnace 10 is maintained at 800 ° C.

The Mo and Ag, Au, Pt or Cu plates fed to the rolling rolls 4 are overlapped with each other and roll pressed at a working rate of 30% to form a clad plate.

No wrinkles were found on the surface of any of the four types of cladding plates obtained as a result.

〔The invention's effect〕

As described above, according to the method of the present invention, a clad plate having no wrinkles on the surface of the clad material plate having a large ductility can be easily manufactured with good yield, and the effect on workability and economy is There is a great one.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a manufacturing process of a cladding plate by a conventional method, and FIG. 2 is a schematic sectional view showing a manufacturing process of a cladding plate by the method of the present invention. 1 …… Clad plate, 2 …… Clad material plate with greater ductility, 3 …… Clad material plate with less ductility, 4 …… Rolling rolls, 5,5 ′, 5 ″ …… Differential rollers, 6… … Heater, 7 ……
Refractory material, 8 …… Guide, 9 …… Matsuful, 10 …… Heating furnace, 11,1
2 ... Uncoiler.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoki Uchiyama 1-8-41 Tenmabashi, Kita-ku, Osaka City, Osaka Prefecture Mitsubishi Metals Co., Ltd. Osaka Smelter (72) Hiromichi Saito 3-10 Kamisooka, Shiki City, Saitama Prefecture -1 Hokuko Metal Co., Ltd.

Claims (1)

[Claims] 1. A method for producing a cladding plate by heating two or more types of cladding material plates having greatly different ductility in an atmosphere of an inert gas or a reducing gas at high temperature and then pressure-bonding them one over the other. Tension resistance is imparted to the clad material plate by passing it through different rollers arranged in front of the rolling rolls.Then, the clad material plate with the higher ductility and the clad material with the lower ductility with the above tensile resistance. A method for manufacturing a clad plate, which comprises stacking the material plate and feeding it to a rolling roll and rolling at a processing rate of 25 to 50%.