Gun barrel manufacturing methods

摘要

A method of forming a gun barrel from a gun liner is disclosed that includes applying one or more coatings to the gun barrel liner such as just a top coating or a bond coating and then a top coating. The method may also include (before applying one or more coatings): threading an outer surface of the gun barrel liner proximate a first end of the gun barrel liner; threadedly coupling the first end of the gun barrel liner to a gun chamber; fixedly coupling the gun barrel liner to the gun chamber. The method may also include heat treating the coating layer(s), contouring the outer coating layer, applying a ceramic top coating to the contoured outer coating layer of the gun barrel liner, and/or sealing the gun barrel with a liquid metal sealer.

主权项

1. A method of manufacturing a gun barrel comprising:
threading an outer surface of a gun barrel liner proximate a first end of the gun barrel liner; threadedly coupling the first end of the gun barrel liner to a gun chamber; fixedly coupling the gun barrel liner to the gun chamber; and applying one or more coatings to the gun barrel liner, wherein applying one or more coatings comprises:
cold gas-dynamic spraying the gun barrel liner with a top coating comprising at least one of titanium powder, titanium alloy powder, aluminum powder, aluminum alloy powder, titanium-aluminum matrix powder, chromium powder, chromium alloy powder, cobalt powder, cobalt alloy powder, iron powder, iron alloy powder, nickel powder, and nickel alloy powder; orapplying a bond coating comprising a nickel based alloy or superalloy to the gun barrel liner; and then cold gas-dynamic spraying the gun barrel liner with a top coating comprising at least one of titanium powder, titanium alloy powder, aluminum powder, aluminum alloy powder, titanium-aluminum matrix powder, chromium powder, chromium alloy powder, cobalt powder, cobalt alloy powder, iron powder, iron alloy powder, nickel powder, and nickel alloy powder.