GUN BARREL AND METHOD TO MAKE IT

The substance of the invention is that at the inner surface of the gun barrel coating is applied, this is made of chromium included the total quantity of additives of oxygen, nitrogen and carbon not exceeding 0.05 %, and rare-earth metals in amount of 0.1-0.2%. In the method proposed the metal of th...

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Bibliographische Detailangaben
Hauptverfasser:	DZHUR YEVHEN OLEKSIIOVYCH, ZAITSEV VIKTOR IVANOVYCH, VASYLINA VOLODYMYR HRYHOROVYCH, BORYSIUK MYKHAILO DEMIANOVYCH, NADTOKA VOLODYMYR MYKOLAIOVYCH, CHERNOV YURII KOSTIANTYNOVYCH
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS ANDORDNANCE, e.g. CANNONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MECHANICAL ENGINEERING METALLURGY MOUNTINGS FOR SMALLARMS OR ORDNANCE SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION WEAPONS
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Beschreibung
Zusammenfassung:	The substance of the invention is that at the inner surface of the gun barrel coating is applied, this is made of chromium included the total quantity of additives of oxygen, nitrogen and carbon not exceeding 0.05 %, and rare-earth metals in amount of 0.1-0.2%. In the method proposed the metal of the coating is placed inside the barrel, after that it is evaporated by electric arc discharge with condensation of the metal vapor to the inner surface in the medium with decreased atmospheric pressure. The temperature of the barrel is kept not higherthan 400 DEGREE C. The protective coating obtained by the method is deformed together with the surface layer of the barrel without cracks formation and retains its impermeability for the products of powder burning.