Handbook-Hardsurfacing, Building

Fig. 18-1. Here is a large piston which has been rough-turned in preparation for bronze surfacing. Fig. 18-3. This 26-in. piston, with all grooves filled and then overlaid, is ready for machining. Fig. 18-2. As piston is rotated in a preheating furnace, bronze is deposited in the grooves. Fig. 18-4. This photograph shows a resurfaced 18-in. piston during the final machining operation.