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US 2022/0178328 A1Published application
Near-Net Shape Single-Piece Piston Blanks
AssigneeKs Kolbenschmidt US, Inc.
InventorsDavid J. Boye, Bryan Quinn, Joseph Stojkov, Joshua Cota, Scott D. Bailey
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Abstract
A one-piece piston blank of near-net shape wherein the piston blank has a flange disposed opposite a skirt, the flange being spin-bendable to form a cooling channel with reduced preliminary removal of material relative to conventional forged piston blanks.
Claims1
A one-piece piston blank of near-net shape formed by:
- heating a billet;
- while heated, shaping the billet by at least one hit in a die;
- allowing cooling of the shaped billet;
- heating a pre-flange portion of the shaped billet while maintaining a skirt portion at a temperature sufficiently cool to retain its shape;
- and
- upsetting the pre-flange portion of the billet to form a flange, thereby forming a near-net shape piston blank,
- wherein the flange of the piston blank is disposed opposite the skirt, the flange being spin-bendable to form a cooling channel with reduced preliminary removal of material relative to conventional forged piston blanks.
4 more elements
Dependencies are inferred from the claim text.