JPS58135779A - Production of clad material - Google Patents

Abstract

PURPOSE:To produce a clad material having excellent peeling strength and conductivity easily , by laminating a stainless steel net and an unsolderable corrosion resistant metallic plate successively on a base metal which is aluminum or an aluminum alloy and subjecting the laminates to electric resistance welding. CONSTITUTION:The four circumferential surfaces of an aluminum bus bar 1 are polished, washed and defatted. On the other hand, a stainless steel net 3 is superposed on one side of a titanium plate 2, and the net 3 is tack welded to the plate 2 by spot welding. The net 3 may be two sheets or may be laminated in 3 sheets The plate 2 with the laminated side on the inner side is bent in conformity with the shape of the bus bar. The bar 1 is put into the bent plate 2, and the bent and joined end 4 of the plate 2 is subjected to titanium welding; at the same time, the surfaces A, B of the plate 2 are welded to the bar 1 by fusion under pressure with a seam welding machine in stripe shapes or over the entire surface thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a cladding material, particularly a base metal made of aluminum or an aluminum alloy, such as titanium, tantalum, or niobium.

This invention relates to a method of manufacturing a clad material by joining together corrosion-resistant metal plates such as zirconium that cannot be soldered.

Conductive bus bars and electrode bodies that require corrosion resistance.

In order to increase the peel strength and conductivity of corrosion-resistant layers in vacuum or pressure towers, etc., conventionally, so-called explosive bonding, which uses the explosive power of gunpowder to join a corrosion-resistant metal plate to a base metal, has been commonly used. However, this explosive bonding had the problem of increasing the processing cost, and because it could not be accurately bonded to the predetermined position of the corrosion-resistant metal plate e-pace metal of a predetermined size, material was wasted. Further, there was a problem in that the number of man-hours required for subsequent processing was also increased.

Therefore, the inventor first proposed a new manufacturing method for cladding materials to solve the following problems caused by explosive adhesion.
Japanese Patent Publication No. 66-11411 (see Japanese Patent Application No. 158-11411).

However, this method is not suitable for base metal l! - Soldering [While applying, a steel mesh and a stainless steel mesh are laminated on a corrosion-resistant metal plate that cannot be soldered, and then the corrosion-resistant metal plate is laminated fRf:, and an electrical resistance of 1lI111 is applied to the soldering surface of the base metal. Therefore, this method also reduces the cost of materials and man-hours for soldering.
Two types of nets [1] There is an increase in material cost and man-hours for laminating, and in addition, since a solder layer and a steel layer are interposed between the base metal and the corrosion-resistant metal plate after joining, the base metal can be separated from the corrosion-resistant metal plate. There was a problem with low conductivity to the plate.

This invention advantageously solves these problems.
By laminating a stainless steel mesh and a corrosion-resistant metal plate that cannot be soldered (f:M) on a base metal made of aluminum or aluminum alloy, and connecting them with electrical resistance, a cladding material with excellent peel strength and conductivity can be created. The present invention provides an easy and inexpensive manufacturing method.

The present invention will be explained below with reference to the drawings.

IIl-411 is an aluminum bus bar (an example of processing when the base metal is made of a titanium plate or rad) First, the four R surfaces of the aluminum bus bar 1 as shown in FIG. 1 are polished, washed and degreased.

On the other hand, on one side of the titanium plate 1, as shown in FIG.

Here, as shown in the first Nm(1) of the stainless steel net It-1, the number of sheets may be eight, or even eight sheets may be laminated.

After that, bend the titanium plate to match the shape of the bus bar with the laminated surface described above inside (Fig. 8 #N), and bend the aluminum bus bar 1 as shown in Fig. 8 and apply titanium** processing to the bending joint end 4 of the titanium plate 3, and apply titanium plate S and B to the busbar 1 in a striped manner or over the entire surface by using a C5Nl1I machine for approximately 2 seconds. ~8! A clad material is manufactured by pressurizing and welding I/C-. This invention is not limited to this processing example, and it is possible to clad round bars and towers and tanks in the same manner as described above. Of course, this method can also be applied to corrosion-resistant metal plates other than titanium.

The test results of the clad material produced by this method will be explained below.

1. Right left U Strict ■ Test piece conditions Base meta A - Aluminum plate thickness 10IIIX Width 50m In addition to stacking titanium plates facing toward each other, 8 pieces of stainless steel mesh (0
, 8 φ x 24 mesh) in the longitudinal center of the titanium plate, and
Seam welding was performed at I Q m, pressure skg/c, and 1111.

(2) Test conditions An aluminum plate and a titanium plate were bent in opposite directions from their center, and a tensile load was applied to the bent end of each plate in the direction of both plates.

■Test result 2, shear tensile test ■Test piece conditions Aluminum & (II Za1011 as base metal)
11 x width 5 Q m x length! la50sm) and a titanium plate as a corrosion-resistant metal plate (11 za 1 x width so wl) +
! The awns (250m111) are overlapped over a length of approximately 80mm at the ends in the longitudinal direction, and the overlapping portion of both is covered with 8 pieces of stainless steel #lI (O, aφX
g4. Seam welding was performed through mesh). Here, this welding was performed at the overlapping portion of the two, with a width of 10 degrees in the width direction, and a pressure of 8 sides.

■Test conditions The ends of the aluminum plate and titanium plate protruding from the welded part are each clamped with an Amsler, and a tensile load is applied to both ends so that shear stress is generated in the welded part.
I let it happen.

■Test results As is clear from these test results, the aluminum plate and titanium plate have high peeling resistance, and the shear strength of the joint between the two is greater than the tensile strength of the titanium plate itself. The cladding material obtained by this method has sufficient durability against the action of external forces in pressure towers and vessels.

Therefore, according to the present invention, not only can a clad material with sufficiently high peel strength and shear strength be obtained, but also the cost of the clad material can be reduced by eliminating the need for soldering and copper netting. In general, during seam welding, the pace metal is joined to the corrosion-resistant metal plate through the stainless steel mesh as a heat generating material, so both
It is possible to achieve a significant improvement in electrical conductivity compared to the case where an intermediate layer is interposed in between.

[Brief explanation of the drawing]

Figure #I1 is a perspective view showing an aluminum bus bar, Figures 2 (a) and (b) are a plan view and side view showing a state in which stainless steel mesh is laminated on a titanium plate, respectively, and Figure 8 is a diagram folded into the shape of an aluminum bus bar. A perspective view showing a bent titanium plate, FIG. 6 (5L), and FIG. 6 (b) are TLE [II figure and 01 view, respectively, showing the state after cladding process. l...Aluminum bus bar, 2...Titanium plate, 8...Stainless steel mesh. Procedural amendment dated August 9, 1982 1. Indication of the case 1982 Patent Application No. 15582 2. Name of the invention Method for manufacturing cladding material & Person making the amendment Relationship to the case Patent applicant Kiyosumi Takayasu 1 , the scope of the W II document is corrected as follows. [+1. Patent - Scope of *T A stainless steel mesh and a non-solderable corrosion-resistant metal plate are sequentially laminated on aluminum, ÷#electronium metal, or ranal heath metal, and these are electrically resistance welded. l1la method for crud wood. ”

Claims (1)

[Claims] L A base metal made of aluminum or alonium alloy, a stainless steel mesh and a corrosion-resistant metal plate that cannot be soldered [sequentially laminated and electrically resistance welded] [Manufacture of a clad material characterized by Method〇