BLANK FOR GUN BARREL, METHOD FOR MAKING GUN BARREL AND GUN BARREL Russian patent published in 2004 - IPC

FIELD: processes for making gun barrels, possibly for all types of firearms. SUBSTANCE: blank of gun barrel includes steel rod made at least of two types of steel. At least one of said two types of steel is in the form of powder steel. Rod is subjected to multiple twisting around its lengthwise axis during one or several stapes of how working. Rod is twisted until leading angle of helical line in range 45 - 90 degrees. Then twisted rod is drilled or punched along its lengthwise axis. EFFECT: enhanced strength properties of gun barrel. 10 cl, 3 dwg, 1 ex