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US 7,743,965 B2Granted
Process to deposit a protective coating on the inner wall of a tube, and notably a gun barrel produced according to this process
AssigneeGiat Industries
InventorsYann Guilmard, Pascal Sabourin, Jean-Luc Coupeau, Alain Proner, Jean-Philippe Dacquet
Life of this patent
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Abstract
A method for setting a protective coating on the inner wall of a tube includes providing a cylindrical sleeve, then setting on the outer surface of the sleeve a layer of a thermo fusible material, then machining the sleeve to provide it with an external diameter corresponding to the tube internal diameter, positioning the sleeve in the tube, and finally soldering the sleeve on the tube by applying heat.
Claims17
A process of making a gun barrel, the process comprising the following steps:
- providing a cylindrical sleeve,
- placing a layer of thermo fusible material on an external surface of the cylindrical sleeve,
- machining the cylindrical sleeve with the thermo fusible material thereon to give the cylindrical sleeve an external diameter that corresponds to an internal diameter of a tube,
- positioning the cylindrical sleeve in the tube, and
- heating the cylindrical sleeve from inside the cylindrical sleeve with no added powder using a localized heating means that is positioned within the sleeve to solder the cylindrical sleeve in the tube.
2 more elements
Dependencies are inferred from the claim text.