Standard for repair and polishing of turnouts and rails

- Oct 23, 2018 -

Standard for repair and polishing of turnouts and rails


  1. The non-acting side of the standard rail has no fat edge, the plane is smooth, no protruding and burr.

  2. Basic rail action while polishing standard basic rail action without fat side, planing smooth, no protruding, burr.


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3. The surface of the flange is a circular arc of R80~R13, measured with 1 m straight ruler, and the unevenness is not more than 0.3 mm.


4. The surface of the flange of the wing rail and the flange is a circular arc of R80~R13, measured with 1m ruler, and the uneven alignment is not more than 0.3 mm.


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5. The standard splice has no fat edge, the width of the joint is not more than 3 mm, the depth is not more than 2 mm, and the grinding angle is 45 °~ 60 °.


6. After the rail is polished with standard fertilizer, the rail side is flat and has no obvious convex and concave. The error of irregularity is not more than 0.3 mm, and the longitudinal slope should be more than 1 ‰.