Stock material or miscellaneous articles – All metal or with adjacent metals – Plural layers discontinuously bonded
Patent
1998-05-07
2000-06-13
Zimmerman, John J.
Stock material or miscellaneous articles
All metal or with adjacent metals
Plural layers discontinuously bonded
428609, 428614, 428661, B32B 324, B32B 1500
Patent
active
060747641
DESCRIPTION:
BRIEF SUMMARY
FIELD OF INVENTION
This invention relates to a cladding material wherein a corrosion resistant metal lining is seam-welded on a metal substrate.
BACKGROUND OF INVENTION
In a conventional method for manufacturing a cladding material, a corrosion resistant metal lining (such as Ti (titanium) or Zr (zirconium)) is bonded to an Fe (iron)-based, a Cu (copper)-based or Al (aluminum)-based metal substrate by a seem welding method. For example, it has been proposed various seem-welding techniques for manufacturing such cladding materials such that a Cu thin plate and a stainless steel mesh are inserted between the Fe-based metal substrate and a corrosion resistant metal lining, and the laminate thereof are integrated by seem welding (Japanese Utility Model Publication No.24459 of 1982), that a Cu mesh, a stainless steel mesh and a corrosion resistant metal lining are laminated on a Pb--Sn solder-coated Cu substrate and integrated each other by seem welding (Japanese Patent Publication No.22422 of 1981), and that a stainless steel mesh are inserted between the Al-based metal substrate and a corrosion resistant metal lining, and the laminate thereof are integrated by seem welding (Japanese Patent Publications No.38269 of 1985 and No.7155 of 1986).
However, all in these prior arts, a conventional metal mesh which is produced by knitting two sets of metal wires has been used. Such mesh is expensive since the manufacturing process thereof comprises many steps such as wire drawing and knitting.
The object of this invention is to offer a cladding material which has an excellent bonding strength and can be produced at a cheaper cost by using a metal mesh produced according to a simple manufacturing process.
SUMMARY OF THE INVENTION
For accomplishing the object mentioned above, the cladding material according to claim 1 has the following constitution. a metal substrate, a metal mesh layer placed on said metal substrate comprising an expanded metal mesh whose openings are formed by making staggered cuts in a metal plate over the whole part thereof so that each cut passes through the thickness of said metal plate, and expanding said metal plate in a direction intersecting the length of said cuts thereby opening each cut, and a metal lining which is placed in contact with said metal mesh in opposition to said metal substrate with said metal mesh inbetween. The metal substrate, the metal mesh layer and the corrosion resistant metal lining are bonded together.
In such cladding material, the metal substrate and the metal lining are strongly bonded together through the metal mesh layer, and the expanded metal used for the metal mesh layer is easy to manufacture and may contribute to a cost reduction of manufacturing the cladding material.
The expanded metal may be prepared more specifically by a method that the portions on both sides of each cut of the metal plate is deformed along the thickness thereof in opposite direction each other for opening each cut. A rolling may be performed against the expanded metal obtained.
The cladding material can be constructed so as to comprise a resistance welded zone which bonds the metal substrate, the metal mesh layer and the metal lining together. The resistance welding zone can be formed by a seam welding method, a spot welding method or other resistance welding method. The seam welding method is particularly preferable for this invention. More specifically, the metal mesh layer and that metal lining are laminated on the metal substrate in this order. Roller electrodes are urged to the laminate with a designated pressure and send electric current thereto for resistance heating. Then, the roller electrodes are relatively rolled on the laminate for forming seam welded zone. The electric current may be sent into the laminate by using a plurality of roller electrodes which pinch the laminate therebetween. On the other hand, a method without pinching the laminate between the roller electrodes, such as series seam welding, is also available. In the series seam welding process, a roller ele
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Showa Entetsu Co., Ltd.
Snider Ronald R.
Zimmerman John J.
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