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US 11,396,036 B2Granted
Lubrication ring for a mechanical expander for sizing large pipes
AssigneeSMS group GmbH
InventorSarah Hornickel
Life of this patent
Estimating the term…
Abstract
A lubrication ring for a mechanical expander (1) for sizing large pipes comprises a conventionally manufactured ring (12) made of steel, in particular construction steel. Fluid bores are provided in the ring (12). A part (13) of the lubrication ring (6) is manufactured by an additive manufacturing technology.
Claims7
A mechanical expander (1) for sizing pipes,
- comprising:
- a wedge (2), the wedge (2) being movable relative to segments (4) that are pressed radially outward against an inside of the pipes during sizing;
- a draw bar (3) for moving the wedge (2), the draw bar (3) being connected to the wedge (2) by a nut (5);
- a washer (7) and a lubrication ring (6) stacked between the nut (5) and the wedge (2),
- wherein the lubrication ring (6) comprises
- a ring (12) made of solid steel;
- fluid bores provided in the ring;
- and
- an additive manufactured part (13) made of fused metal powder layers,
- wherein the ring (12) made of solid steel is arranged proximal to the wedge (2) and the additive manufactured part (13) is arranged proximal to the washer (7), and
- wherein the additive manufactured part (13) includes at least one enclosed lubricant channel which extends from a face proximal to the washer to the fluid bores in the ring (12).
8 more elements
Dependencies are inferred from the claim text.