# US 4,391,403 A · Method of explosion-welding rolling billets intended for package rolling

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- Number: US 4,391,403 A
- Document ID: US4391403A
- Status: Granted
- Kind: A
- Application number: 06/253,822
- Filed: 1981-04-13
- Granted: 1983-07-05
- Earliest claimed: 1980-04-23
- Assignees: Nitro Nobel AB
- Inventors: Ingemar P. Persson
- Web page: https://patentgrep.com/patent/US4391403A

## CPC

- B23K 20/08: Explosive welding
- 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

## Abstract

A method of manufacturing a compound plate by explosion-welding, the compound plate being intended for package-rolling. The plating material is smaller in area than the base material so that an edge is formed around the periphery of the base material, this free edge surface being protected by the attachment of metal strips, after which an explosive charge, the area of which is at least as great as that of the base material, is placed on top of the plating material and detonated.

## Claims

### Claim 1

A method of manufacturing a compound plate by explosion-welding, said compound plate being intended for subsequent package-rolling, characterised in that the plating material is smaller in area than the base material so that an edge is left around the periphery of the base material without any plating, that this free edge surface of the base material is protected by the attachment of metal strips, that an explosive charge is placed on top of the plating material, said charge having an area at least as great as that of the base material, after which the explosive charge is detonated.

### Claim 2 (depends on 1)

A method according to claim 1, wherein the detonation of the explosive charge is initiated along a line.

### Claim 3 (depends on 1)

A method according to claim 1, wherein the detonation of the explosive charge is initiated at a point.

### Claim 4 (depends on 1)

A method according to claim 1, wherein at each firing only one plating sheet is explosion-welded to the base material.

### Claim 5 (depends on 1)

A method according to claim 1, wherein at each firing two or more plating sheets are simultaneously explosion-welded to the base material in parallel.