Work guide for pipe reeling machines and the like and process for treating the same
AssigneeYoungstown Sheet and Tube Company
InventorRobert G. Griffith
Life of this patent
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Abstract
A pipe reeling machine guide for guiding and burnishing an external surface of a pipe having a work contact surface of a composition consisting essentially, in percent by weight, of: 0.70-0.90 carbon, up to 1.75 manganese, 0.08 max. phosphorus, 0.08 max. sulfur, 0.5-1.75 silicon, 8-12.0 nickel, 23-27 choromium, and the balance being essentially iron with residual impurities.
Claims5
A pipe reeling machine external guide for guiding and burnishing an external surface of a pipe, said guide having a work contact surface of a composition consisting essentially, in percent by weight, of:
- 0.70-0.90 carbon;
- up to 1.75 manganese, 0.08 max. phosphorus, 0.08 max. sulfur, 0.5-1.75 silicon, 8-12.0 nickel, 23-27 chromium, and the balance being essentially iron with residual impurities.
A process for treating a pipe reeling machine external guide which comprises:
- heat treating and cooling a guide having an external work contact surface of a steel alloy having a composition consisting essentially, in percent by weight, of:
- 0.70-0.90 carbon, up to 1.75 manganese, 0.08 max. phosphorus, 0.08 max. sulfur, 0.5-1.75 silicon, 8-12.0 nickel, 23-27 chromium, and the balance being essentially iron with residual impurities, in a manner whereby an oxide is formed on said surface.
Dependencies are inferred from the claim text.