A one-piece steel piston that is made from a piston blank that includes a portion (4) that is configured and designed to be displaced to form a cooling gallery (9) and ring belt. The piston blank can be formed by a casting or forging process. The portion t...

A one-piece steel piston that is made from a piston blank that includes a portion that is configured and designed to be displaced to form a cooling gallery and ring belt. The piston blank can be formed by a casting or forging process. The portion that is d...

A one-piece steel piston that is made from a piston blank that includes a portion that is configured and designed to be displaced to form a cooling gallery and ring belt. The piston blank can be formed by a casting or forging process. The portion that is d...

A piston engine has a cooling passage integrated within the piston crown (2) and surrounding rim (3). The cooling passage is formed by rolling the forged rim over the piston neck zone to join the neck (5).

The process involves forging an outline of a part of a piston, suitable to repel a metallic mass (18) in an annular zone while forming an embossing that makes projection in centre of a base (16) with circular contour. The embossing is pierced by a reaming ...

Production of a cooling channel piston comprises shaping a piston blank at least partly in a forging process. At least one peripheral collar and a recess (6) behind the collar are produced during the forging process. The collar is then reshaped so that the...