法国一种专利的离子氮化装置,能使内径变化的管件(武器身管)内膛获得均匀的氮化层。由图1和图2可见,该装置的关键部分是结构巧妙的中空阳极,并采取了分段控温的方法。该阳极同轴地插入需氮化管件(阴极)的中央,共外表面与管件内表面的间距沿全长相 France A patented ion nitriding device that enables a uniform nitrided layer in the bore of a pipe (weapon barrel) with varying internal diameters. From Figure 1 and Figure 2 shows that the key part of the device is a cleverly structured hollow anode, and adopted a method of temperature control section. The anode is coaxially inserted into the center of the tube to be nitrided (cathode), and the distance between the common external surface and the internal surface of the tube is along the entire length