Gun barrels life closely related to the gun barrels temperature variation. On the basis of analyzing gun barrels temperature various characteristics and rules during machine-guns firing, according to gun barrels life factors and their impact on gun barrels life, test programs under different shooting combined conditions and gun barrels temperature field testing programs are designed. Through the gun barrels temperature dynamic tests and test results during shooting, analyze and put forward the relationship between gun barrels temperature rising and firing specification. Which provides the experimental basis for choice of machine-gun barrels life stresses and analysis of the life-ended rules.
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