Heat Transfer Analysis of the Tantalum-plated Barrel

Accurate calculation of temperature distribution in the barrel tube is of great importance for the barrel design. In this paper, a numerical heat conduction model of PCrNi3MoVA tube plated with tantalum coating at the inner surface is established. Based on the finite difference method, the temperature distribution of different coating schemes is calculated. The origin of rifling which is the most serious part of erosion and wear is selected as the object of study. When it comes to different coating thickness, we focused on the variation of temperature at the bore surface and the interface of Tantalum coating and steel substrate. The numerical results show that the thickness of the coating is of great significant to the temperature of the substrate.