Method of producing cold-worked centrifugal cast tubular products
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United States of America Patent
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Mar 8, 2016
Grant Date -
Jul 2, 2015
app pub date -
Mar 13, 2015
filing date -
Aug 17, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A method of making a seamless, tubular article comprises subjecting a cast tubular workpiece of a corrosion resistant alloy to at least about a 25% wall reduction at a temperature below a recrystallization temperature of the workpiece using a metal forming process comprising at least one of radial forging, rolling, pilgering, and flowforming. The cast tubular workpiece is a centrifugally cast tubular workpiece comprising an inner diameter and an outer diameter.
First Claim
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International Classification(s)
- F16L:PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR ....
- B21J:FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURN....
- B21C:MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PR....
- B22D:CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY ....
- C22F:CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS MET....
- C21D:MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS....
- B21D:WORKING OR PROCESSING OF SHEET METAL OR METAL TUBE....
- B21B:ROLLING OF METAL
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