![]() ![]() Insulated rail joint bar is generally applied to the automatic block district, cut off the electricity.Įxpansion joint bar is also called rail expansion device, including stock rail and switch rail. The compromise rail joint is used to connect two types of rail tracks. Related fasteners of rail connection include rail joint bar, fish bolts, rail nuts, spring washer.Īccording to the functions, rail joint bar can be divided into common rail joint bar, compromise rail joint bar, conductor-rail bond, glued insulation rail joint, expansion rail joint and welded joint. Rail joint bar, also known as railway fish plates, is used to connect two rail tracks into a continuous railway line. ![]() To be specific, C stand for strength of extension, Mn stand for strength and tenacity, Si stand for density, P stand for cold brittleness, S stand for hot brittleness. Each chemical element stands for one kind of property. The rail track is mainly made up of carbon and ferrum. So improving the purity of rail track is one of the effective ways to reduce fatigue damage, increase reliability and prolog the service life of rails. The quality problems of rail track are fatigue damage mostly caused by inclusions, flaw of rail track. To ensure the high reliability of rail track, the premise is high purity and reasonable chemical component of material. Rail material means the chemical composition and metallographic structure of rail track. Provide continuous, smooth and low-resistance rolling surface for wheel, guide the train to move forward.īear huge vertical pressure from wheel and transfer the load to the railway sleepers.
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