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US 4,069,358 AGranted
Method for cladding heavy gage plate
AssigneeOlin Corporation
InventorsJoseph Winter, Derek E. Tyler
Life of this patent
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Abstract
A method of cladding metal plate with a protective layer of copper or copper base alloy is disclosed. The metal plate is contacted with a standing waveform of molten copper or copper base alloy in order to provide the cladding layer. This clad composite material is used to provide corrosion resistance for the metal plate substrate and an inexpensive alternative to solid thick sheets of copper or copper base alloy to deter corrosion.
Claims13
A method of cladding plate comprising the steps of:
- a. providing a clean, smooth metal substrate in plate form having a thickness of from 1/8 to 2 inches selected from the group consisting of iron and iron alloys;
- b. heating the plate to a temperature between 200.degree. and 1000.degree. C;
- c. providing a bath of molten metal cladding material selected from the group consisting of copper and copper base alloys at a temperature above that of the heated substrate plate, wherein the temperature of said metal cladding material ranges from 1100.degree. to 1400.degree. C;
- d. forming a standing wave of the molten metal in the bath;
- e. contacting at least one surface of the heated substrate plate with the top portion of the standing wave of molten cladding material in at least one pass through the contacting station to form a composite clad plate wherein the cladding thickness ranges from 0.01 to 0.5 inch, wherein the substrate plate contacts the standing wave of cladding material at a speed ranging from 2 to 40 inches per minute;
- and
- f. removing the composite clad plate from the contacting station, to be subsequently formed if desired.
4 more elements
Dependencies are inferred from the claim text.