China Made Type WJ-8 Rail Fastening Systems for High-Speed Railway
WJ-8 Rail Fastening Systems is a kind of rail fastener for high-speed railway, which is composed of screw spikes, flat washers, rail clips, insulators, gauge baffles, under-rail pads, base plates, resilient pads, nylon dowels, etc.
WJ-8 Rail Fastening Systems is used for 60kg/m steel rail with the gauge of 1435mm.
The fatigue performance of WJ-8 Rail Fastening Systems has no damage to all parts after 3 million load cycles, the gauge expansion is less than 6mm, and the buckling force change is ≤20%; the rail longitudinal resistance change is ≤20%; the joint static stiffness change is ≤25% has no damage to all parts after 3 million load cycles, the gauge expansion is less than 6mm, and the fastening force change is ≤20%; the rail longitudinal resistance change is ≤20%; the joint static stiffness change is ≤25%.
There are two types of rail pads for WJ-8 Track Fastening Systems. The static stiffness of type A pad is 30~40kN/mm, which is suitable for 250km/h passenger dedicated line (taking into account freight); the stiffness of type B pad is 20~26kN/mm, which is suitable for 350km/h passenger dedicated line; the ratio of dynamic and static stiffness is not more than 2.0.
