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erformance-forging roughcast - forging annealing-UT flaw - roughing(mechanical tests)-heat treatment (hardening and tempering) - UTflaw - semi finishing - finishing - MT
2.Large forgings: cylinder body, gear,gear shaft forging roughcast - surface inspection – roughing - UTflaw - UT flaw detector heat treatment - finishing semi-finishing -MT
3.Welding structure: racks, chassis,wheel box
Plate into the factory (chemicalcomposition analysis, mechanical properties test) - pretreatment -for sheet metal cutting-welding-seam UT or RT flaw - annealingtreatment - roughing-finishing- vibration destressing-hot blasting-finishing
5-4 Major parts of themanufacturing process.


