After optimizing the process, the effective hardened layer depth of the tooth root is 1.4mm, as shown in Figure 1. The optimized and improved gear hub successfully passed the 1200 hour bench durability life test. 1) Optimization and improvement of drawings: technical requirements are added, and the hardened layer...
It mainly analyzes the root causes from the aspects of part failure form, part design, material, processing, assembly, use and maintenance; 1. Failure mode According to the analysis of macroscopic fracture failure pictures (Fig. 1 ~ 6), the fracture is fatigue fracture, which originates from the spline root, and...
The central transmission structure of the bulldozer developed by a company is shown in Figure 1. When the whole machine works for 800 ~ 1000 hours, it is found that the single track does not move and cannot turn. After disassembling the central drive, it is found that the...