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US 4,078,412 AGranted
Support shoes and methods of supporting metal members such as seamless tubes
AssigneeColumbiana Foundry Company
InventorsLewis A. Way, Robert C. Williams
Life of this patent
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AssigneeColumbiana Foundry Company
InventorsLewis A. Way, Robert C. Williams
Estimating the term…
A support shoe and a method are provided for supporting metal members being formed at high temperatures, particularly during piercing and reeling of seamless tube, by the steps of passing said member, over one or more supporting shoes positioned to support the metal member, particularly while said member passes between the rolls of the piercing mill and/or the reeling mill with said shoe being formed of an alloy comprising 0.015% to 1.5% carbon, about 35% to 65% cobalt, about 15% to 35% chromium and up to about 25% iron and amounts of boron, nickel, silicon, molybdenum, vanadium, aluminum, tantalum, tungsten, titanium, copper and columbium for imparting the qualities generally associated therewith without detrimentally affecting the hot hardness and resistance to erosion of said alloy at said elevated temperature.
A method of supporting metal members being formed at elevated temperatures such as during piercing and enlarging a seamless tube, comprising the steps of passing said metal member at an elevated temperature over one or more supporting shoes positioned to support said member, said support shoe being formed of an alloy consisting essentially of 0.015% to 1.5% carbon, about 35% to 65% cobalt, about 15% to 35% chromium, up to about 25% iron and amounts of boron, nickel, silicon, molybdenum, vanadium, aluminum, tantalum, tungsten, titanium, copper and columbium for imparting the qualities generally associated therewith without detrimentally affecting the hot hardness and resistance to erosion of said alloy at said elevated temperature.
A support member having a surface adapted for moving contact on a moving metal member at elevated temperature to be supported consisting essentially of about 0.015% to 1.5% carbon, about 35% to 65% cobalt, about 15% to 35% chromium, up to about 25% iron and amounts of boron, nickel, silicon, molybdenum, vanadium, aluminum, tantalum, tungsten, titanium, copper and columbium for imparting the qualities generally associated therewith without detrimentally affecting the hot hardness and resistance to erosion of said alloy at said elevated temperature.
Dependencies are inferred from the claim text.