Study on Surface Treatment over the Barrel of Small Arms

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Journal of the Korea Institute of Military Science and Technology 2004;7(1):5-12.

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소구경 총열 표면처리에 관한 연구

채제욱, 김인우, 이영신

¹국방과학연구소
²국방과학연구
³충남대학교 기계설계공학과

Abstract

This paper includes the comparative study between Cr plating and nitriding process with an aim at improving corrosion, wear and maintainability for KNR(Korean Next Generation Rifle) 5.5mm barrel. The endurance test was conducted to compare the performance of standard barrel, Cr plating barrel and nitriding barrel. Main activities are described as follows; optimal Cr plating and nitriding process set-up for KNR 5.56mm barrel; durability test of each barrel(20,000 rounds); salt water immersion test; dispersion, initial velocity, inner diameter data acquisition. According to the results of this firing test, Cr plating barrel is superior to standard barrel and nitriding barrel in view of corrosion, wear and maintainability.

Key Words: Surface Treatment, Cr Plating, Nitriding, Korean Next Generation Rifle, Barrel, Firing Test, Salt Water Immersion Test