Thrust tile bulk chord 491. lmm, the radius of 2085mm. 359.4n fly head chord m, radius of 1577. smm, thick 42mm, tungsten gold tile. Tile back in the circumferential direction has 126 wide 1.6mm, depth 4. smm heat sinks, as well as four radial slots. Wherein the two is out of the fuel tank (with a beveled bottom), two for the bar off the circumferential cooling groove. Its structure is complex and difficult process, and the required thickness in Taiwan 24 watts is not more than 0.06mm. Especially circumferential 126 small heatsink, after several test process, finally adopted a special single-blade machining was successful. To control the thickness of 24 watts, using a grinding process tile back; in order to grind order to create better conditions, good flatness should be controlled tungsten surface in the processing tile back requirements to leveling the joint surface (car Tungsten When the surface of a car tire out); tungsten gold tiles fixed on the tire ride block using spot welding methods. To reduce the deformation and damage, requiring as little as possible the amount of spot welding, weld grinding approach adopted when taken down, claimed the gold surface when grinding tungsten good.
Mirror board manufacturing mirror plate outer diameter 4170mm, the inner diameter of 3155mm, thickness 138mm. Mirror radial straightness 0.01mm, roughness mix 0.2 m, the occlusal surface straightness 0.025mm, and the mirror parallel 003mm, mix roughness 1.6 m. Because thin, easily deformed, cause difficulties to the process. According to GE Canada's process, combined with our experience, we use the pad after the first roughing polished cylinder, reprocessing of the occlusal surface, checking straightness, turning machining the mirror, the mirror shape and position tolerances to meet the requirements of the drawings, and then research polishing process solutions to meet the roughness, processing a mirror plate full compliance with the requirements of the drawings.
Axial thrust head to head manufacturing welded structures, welding and forging thrust head twice by a steel plate. Its outer diameter 417omm, an inner diameter of 3050mm, high 477smm. Smooth outer rotor surface roughness of 0.4 spell m, workpiece weight 15380kg. Its outer edge on one side there is a spigot 25mm thick, the other side of the circle high 171. smm rims, are susceptible to damage when the workpiece stand, caused difficulties to stand up, so the eventual adoption plus side skids way, with polyester felt around the bag, so that when you stand up in this two unstressed. Its blind pin hole 8 is also a small 64.2 CNC gantry milling; smooth outer rotor surface grinding and polishing process is used.
Closures of processing. The machine has five kinds of closures, it is difficult to manufacture two closures made of sheet aluminum.
Large cap sleeve, bottom ring, cylinder and other parts of the servomotor axes used compression tool kit to address the liner deformation and assembly difficulty. The guide vanes, lower journal precision, roughness demanding. To shorten the processing cycle, eliminate wicket journal ovality, we use anti-car holder and whirling tool and were rough, finishing, reached the drawing requirements to ensure the machining accuracy. Guide bearing body tungsten using 1/4 valve casting tools, cooling water pipes, the base and the corresponding scraping tool tungsten sump positioning tool to solve the sump casting and machining problems. Since the stator plate, high pressure requirements specified bit indexing, it was first used in welding-chip positioning tools to ensure the quality of products after welding (later Guigang, GAOBAZHOU and other units using this method).
In Ertan tooling design in the unit, so that a common, borrowing combined with reduced tooling costs, such as rotor earth stent processing 200t turntable, wheel balancing tools, water guide assembly with support London-style seat ring, the central body hanging tools, and other large rotor spider spreader tool uses LIJIAXIA unit tooling. Ertan crew conducted to meet the requirements under the premise modify, add some parts to reach with GM, borrowing purposes.
In short, by learning foreign tooling technology, combined with their actual production tooling our conventional processing conditions according to Ertan unit designed and tooling on some past structural modifications utilization are in line with production requirements to ensure the unit's normal Ertan working on tools to manage also gained some experience, it has laid a good foundation for the processing of the Three Gorges unit.
