Babjak N. Increase of reliability of power contact connections electropneumatic contactor electric locomotives of a direct current

Processes of operation and repair of a rolling stock. The purpose of work - increase operational Reliability works that reductions in price of repair of power contact connections electro pneumatic contactor electric locomotives of a direct current by replacement or restoration of copper contacts by composite materials (pseudo-alloys). Methods of probability theory and reliability, mathematical statistics are used. For the first time for an estimation of non-failure operation and a resource of contacts the mathematical model of physical formation of consecutive refusals by criterion of wear process is put. The new model of an estimation of reliability of technological process of restoration of details of a rolling stock is developed. For the first time-brazed laws of influence of operational characteristics are established on wear resistance of contacts. The developed technology is introduced in locomotive depot Nignedneprovsk-Uzel Pridneprovsky of the railway. Efficiency in money’s worth makes 56 thousand grn. In one year on the specified depot. Sphere of use is the railway transportation.