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Study on Super Anti-friction and Wear Resistanc of the Ring Traveler

Author: ChenYi
Tutor: ZhaoYongWu
School: Jiangnan University
Course: Mechanical Design and Theory
Keywords: Diamond-like carbon Quench-Polish-Quench Wear resistance Surface-status Surface treatment Service life
CLC: TS103.822
Type: Master's thesis
Year: 2012
Downloads: 28
Quote: 0
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Abstract


Ring traveler is very crucial parts of the spinning machine，they are run constantly underconditions of badly dry friction， this leads to the life cycle of bead is only3-5days.Improving the surface quality and tribological properties of the textile bead hasbeen taken seriously by more and more researchers. The life of the ring traveler is thebasic starting point.Hign hardness, wear and friction reduction,low friction coefficientof coating are considered by us too,and QPQ and diamond-like carbon coatingare the main object of the study. Using the GCr15ball and QPQ or DLC plates to carry out asystematic comparison test on the ball-plate friction and wear testing machine, and the testswere in the dry friction condition. We summed up the anti-friction wear andcorrosion performance of related coatings by the experimental phenomena and experimentaldatas, and analyed mechanisms.Experimental results show that:(1) DLC coating can effectively improve the hardness ofthe matrix material, and have good combination with the matrix material. DLC coating has avery low coefficient of friction when the load does not exceed a certain range, the frictioncoefficient increases with decrease of the speed and the load. DLC coating has a small amountof wear and has a low wear rate.(2) QPQ coating has high hardness and good nitrided layerorganizations,the friction coefficient increases with increase of the speed. QPQ coatinghas good abrasion resistance, the friction coefficient increases slowly with increase of the loadwhen the load is low, and the friction coefficient can keep a certain time.(3) The surfaceof QPQ coating form a dense oxide film, on the one hand, the oxide film canimprove the corrosion resistance of the workpiece, on the other hand,oxides filmincrease the oxygen content of the nitride layer, and further improve the corrosion resistanceof the workpiece. In the experiment of Corrosion weight loss and electrochemical, DLCcoating has good corrosion resistance,because of the good performance of theamorphous structure of DLC coating and itssp3. DLC coating has large thickness,so itschemical properties remains stable.

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