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US 6,381,893 B2Granted
Weapon barrel having a hard chromium inner layer
AssigneeRheinmetall W & M GmbH
InventorsGert Schlenkert, Hartmut Wagner, Horst Reckeweg
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Abstract
A weapon barrel includes a hard chromium layer provided on an inner barrel surface. The hard chromium layer contains at least 500 fissures/cm in a cross-sectional plane.
Claims2
A method comprising the steps of
- (a) applying a hard chromium layer to an inner face of a weapon barrel;
- (b) increasing a number of microfissures in said hard chromium layer to at least 500 fissures/cm in a cross-sectional plane for improving a thermal shock resistance of said hard chromium layer;
- and
- (c) using said hard chromium layer as an internal coating for the weapon barrel.
1 more element
A method comprising the steps of
- (a) applying a hard chromium layer to an inner face of a weapon barrel;
- (b) increasing a number of microfissures in said hard chromium layer to at least 500 fissures/cm in a cross-sectional plane and to at least 150 fissures/cm in an upper surface of said hard chromium layer for improving a thermal shock resistance thereof;
- and
- (c) using said hard chromium layer as an internal coating for the weapon barrel.
1 more element
Dependencies are inferred from the claim text.