So the weight of large diameter items can not be locally available turning lathe processing, processing and use of boring machine will solve the problem. Processed in the order: the main rotor will be disposed of with a boring machine in the work platform, with the rotor will be fixed on the plywood platform, but not too tight, in order to adjust positions. Spindle were used at both ends of adjustable-1.30 stent support to be fixed, Bai Fenbiao (Qian Fenbiao be) placed on the spindle boring machine (placing the tool axis), to end the axis for the base level. Bai Fenbiao right end with the main rotor from the top of the slow movement for vertical reciprocating, according to Bai Fenbiao measurement readings at both ends of spindle height adjustment, when Bai Fenbiao measured value less than or equal to 0.1 mm, while on the main shaft which is below water level. Use the same method of correction on both sides of main spindle parallel with the boring machine, and then the rotor splints, 1.30 stent-jail, adjusted Boring Machine Tool Turning to the axis of depth to the standard value, start boring machine to work. Turning process, the process should strictly control its spindle Care, the error in the control ± 0.02mm. Finally, technological requirements, turning to install the first thrust ring key parts of its length of 30 mm, diameter of 160 mm. 3 security and reliability of accounting positions in the welding generator rotor at the top and bottom of the first thrust, here mainly to bear the weight of the rotating generator and water thrust and shaft diameter (180 mm) than to install the key thrust of the first ring diameter shaft (160mm), functioning unit at the Department for the main generator rotor load, wheels, axle and water, such as axial thrust load, torque is very small, as long as welding reliable, functioning unit will be safe and reliable. Welding suffered at the axial force for N: N = runner runner weight of water thrust + + + main generator rotor weight of the weight of water thrust F: Type in: D for diameter wheels; H for the head; y water The density; k for the coefficient. Check the drawings for the weight of equipment components: Runner weight 1 t, spindle weight of 0.6 t, generator rotor 4.8 t, is: N = 14 +1 +4.8 +0.6 = 200 (kN) welding parts for the greatest stress Q: Q = N / S '= 200/0.0254 34 = 7.86 (MPa) <225MPa-in: S' as the principal axis cross-sectional area. According to GB, 35 bar and 506 electrode tensile strength: 1,2-Weld to 265 MPa, 3级Weld to 225 MPa. A point of order, Weld reached 1,2-class standards, not checked. 4 welding flaw detection test to ensure the welding quality of the welding parts for the ultrasonic flaw detection test.