# US 4,393,122 A · Clad steel plates

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- Number: US 4,393,122 A
- Document ID: US4393122A
- Status: Granted
- Kind: A
- Application number: 06/224,537
- Filed: 1980-12-18
- Granted: 1983-07-12
- Earliest claimed: 1979-04-18
- Inventors: Akira Takayasu
- Web page: https://patentgrep.com/patent/US4393122A

## CPC

- B23K 35/004: {at least one of the workpieces being of a metal of the iron group}
- B23K 20/08: Explosive welding
- B23K 20/227: with ferrous layer
- B23K 35/005: {at least one of the workpieces being of a refractory metal}
- B32B 15/01: all layers being exclusively metallic {(making layered metal workpieces by pressure cladding B23K20/22; making coatings with a metallic material characterised by its composition C23C30/00)}
- Y10T 428/12347: Plural layers discontinuously bonded [e.g., spot-weld, mechanical fastener, etc.]
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A clad steel plate having a sandwich structure obtained by sandwiching a thin copper sheet and a stainless steel net between a plate of steel such as carbon steel, alloy steel or the like and an anticorrosive plate of metal such as titanium, tantalum, niobium, zirconium or the like, wherein the steel plate and anticorrosive metal plate are bonded to each other through the net and thin copper sheet by local welding between mutual portions to be joined. The clad steel plate can be produced cheaply and simply, and has excellent electrical and heat conductivities.

## Claims

### Claim 1

A clad steel plate produced by sandwiching a thin copper sheet and a stainless steel net between a steel plate and an anticorrosive metal plate and locally bonding them to each other by welding.