■ Dentify material
According to the user's requirements, according to the ring gear structure and working conditions, the material's hardenability, tensile strength, wear resistance, etc. determine the material composition, commonly used materials ZG42CrMo, ZG45CrMo, ZG45CrMoNi2, QT700 and so on.
■ Develop product quality ITP plan
Develop an ITP plan to control product quality based on product process and control points.
■ Designmodel process,foundry process
Design the model process, design the casting process according to materials, processing requirements, etc. Procast simulation simulates the casting process and performs MT inspection on the blank.
■ Roughing
Hardness test after roughing, detecting the number of bus bars and the number of points in accordance with the test standard.
■ Defect welding
If the defect is found to be in accordance with the welding repair process, MT, UT inspection and hardness inspection of the weld repair zone are performed after welding.
■ Heat treatment
According to the performance requirements, the heat treatment process is formulated for heat treatment, the performance is tested after heat treatment, and the MT and UT are inspected on the non-machined surface.
■ Semi-finshing
Before the semi-finishing, the stress is eliminated. After the processing, the UT is inspected according to the process requirements. According to the process requirements, the joint surface MT is inspected. After the coarse hobbing, the Girth Gear is released and released.
■ Finishing
Detecting the flatness of the joint surface, the size of the joint surface, the amount of the joint surface misalignment, the joint gap and the joint surface MT inspection, the gear tip hardness is checked for the gear hardness, and the dimensions, shape tolerance and surface roughness of each part are checked after finishing the vehicle. degree Flange hole size and surface roughness meet drawing requirements.
■ Finishing hobbing/comb
Verify the hob, check the end jump and the runout of the Girth Gear, verify whether the process support meets the process requirements, verify the alignment (according to the inspection requirements, 5 times), check the number of teeth, the helix angle and the spiral direction to meet the drawing requirements after fine rolling Check the Girth Gear to jump, check the gear precision, perform MT inspection according to the drawings, and carry out the large and small gear rolling according to the drawings, process or specification.
■ Painting
Package inspection in accordance with drawings, processes and standards.
■ Package
Packing inspection according to drawings, processes and standards.
