الوصف

Mechanical parts processing technical requirements for a summary outline of the processing parts: 1, did not meet the requirements of GB******0 Note the shape of tolerance. 2, did not note the length dimension tolerance ± 0.5mm. 3, did not note radius R5. 4, are not chamfer note C2. 5, acute blunt down. 6, sharp edges down blunt, burr burr.
    Parts surface treatment:
1: On the part machined surface, no defects scratches, abrasions and other damage to parts of the surface.
2:There is no thread surface machining black, bump, Labelling and burrs. All parts need to be coated steel surface before painting must be rust, scale, grease, dust, dirt, salt and dirt, etc. Removed.
 3:Before the rust, first with an organic solvent, lye, emulsifier, steam and other steel parts surface to remove grease, dirt.
4:The surface to be coated and primed by shot peening or hand rust time interval not more than 6h.
5Riveting pieces mutual contact surfaces must be painted before connecting a thickness of *0 ~ *0μm rust. Lap edge applications of paint, putty or an adhesive closure. Damage due to manufacturing or welding primer, to re-painting.
    Part of the heat treatment:
1:After quenching, HRC*0 ~ *5.
2:Carbon steel: *5 or *0Cr parts for high-frequency quenching, **0 ~ **0 ℃ tempering, HRC*0 ~ *5.
3:Carburizing depth of 0.3mm.
4:High-temperature aging treatment.
    After finishing technical requirements, the part is placed after finishing shall not be placed directly on the ground, should take the necessary support and protection measures.
2:Does not allow machined surface rust and moth affect performance, or appearance of life bump, scratches and other defects.
3:Finishing the rolling surface, without peeling after rolling.
4:The final step after the heat treatment of parts, there should be no surface oxide.
   After finishing the mating surfaces of the tooth surface should have sealed annealing parts:
1:Must be soaked in oil before each seal assembly.
2:Strict inspection before assembly and cleared parts processing residual acute angle, burrs and foreign matter. When load to ensure the seal is not scratched.
3:The adhesive should be cleared out of the excess adhesive.