Papers by Author: Wen Xiong Li

Abstract: Aimed to eliminate the harmful residual tensile stress produced on the surface of bearing ring in the conventional bearing processing and join the automatically strengthen and polished technology together, the paper provide a set of new strengthening-polishing bearings equipment, designed to effectively improve the bearing surface’s quality and produce the surface residual stress which can extend the bearing’s fatigue life. The prototype, based on the pre-theoretical design, has been successfully developed, and now is in field testing.

Abstract: Soil moisture detective probe is an important part of automatic irrigation system. Soil moisture probe is usually made of metal material which is easy to be corroded and passivated as long-term working in the damp soil, especially containing acid, alkali and salt. We developed a new soil moisture probe material - the graphite-based cementitious material. The mechanical properties and the conductive properties of the material were tested and we found the graphite-based cementitious material which contains 30% to 50% of graphite could be an applicable material for the soil moisture probe.

Abstract: Through the discussion of the design studies of the injection system belongs to the device of bearing strengthening and polishing, a design of jet and recycling integrated system for the abrasive materials is proposed, during which the defect of traditional injection device is overcomed, the periodic duty of the strengthen strengthening and polishing material injection is achieved, and the bearing strengthening and polishing efficiency is greatly raised, the structural design and the calculation of essential parameter of the injection movement are also given .

Abstract: To further understand the bearing performance’s influence of the plastic deformation after balls and bearing rings surface multiple collision in ball bearing’s strengthening and polishing processing by the strengthening and polishing machine. ABAQUES software is used for finite element analysis in the three-dimensional modeling of multiple collision, and the plastic strengthen the performance of bearings is researched mainly. The results shows that the raceway surface is significant plastic strengthen in multiple collisions, Yield ability is enhanced largely, and surface residual stress state present for the compressive stress. Raceway surface strengthening process requires a particular number of times to ensure the processing, with strengthening processing times increasing, bearing raceway surface strength is saturated, then, the number continued to increase to strengthen, the surface strength is no significant increase. But after the collision of ball, uniform residual compressive stress is forming in the bearing surface, good for improving the fatigue strength and bearing life.