1008 複合表面改質による鉄道車輪の乗り上がり脱線防止に関する研究

概要

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There is still very much serious accident of railroad vehicles in the inside and outside of Japan. Many of causes of the derailment accident of a railroad are that a wheel overcomes a rail by high friction coefficient contact of a wheel flange and the rail side. Although lubricating oil is used in order to prevent high friction, it has various problems such as environmental pollution by the superfluous application, and an increase in the friction coefficient by evaporation dryness. Then, this research considered lubricous-ization by the surface modification for the purpose of development of the self-lubricous-ized railroad wheel which can prevent derailment of railroad vehicles to non-lubricating oil. DLC coating railway wheel and MoS_2 coating railway wheel were carried out the friction and abrasion test that assumed the travel in actual high load and under the high-speed slide by using 2 cylinders rolling contact testing equipment. Consequently, the compound surface reforming DLC coating film was indicated with being the very effective film which can prevent the carry riser derailment. The MoS_2 composite coating film on the wheel disk showed the maximum traction coefficient of 0.06. It implies that dry lubrication has possibility of preventing wheel climbing because the adhesive coefficient of the coating is lower than that of conventional oil.
一般社団法人日本機械学会の論文
2003-09-19