Crossings

Heat Treated Welded Crossing (HTW)

Crossing

Rahee’s HTW crossing is a monolithic structure, where the Vee is formed from two separate pieces of rails, with a steel plate sandwiched in between.The plate is Electro-slag welded and planed to form a solid nose. The weld metal hardness, at the top of the rail head and in the weld cross section, ranges from 330 to 360 BHN.

The Wing Rails are head hardened through induction hardening method with subsequently controlled cooling, to obtain fine pearlitic grain structure. The Wing Rails and the Vee are bolted together by high tensile bolts, to form a complete HTW crossing. These crossings can withstand axle loads as high as 25 tones under varying traffic conditions and can be welded to the adjoining rails.

HTW crossing can be designed and manufactured as per the client’s specific requirements. Rahee has supplied various types of HTW crossings such as Acute, Obtuse, Diamond, Curved, Extended Nose Type, and Crossings with clothoidal entry.

Advantages

 

Swing Nose Crossing

Rahee can manufacturing and supply Swing Nose Crossing (SNC).

SNC helps you meet the new age requirements for high speed with high comfort level, which demands continuous movement of rolling stock over gapless tracks and turnouts. Here, the movable nose of the crossing alternately couples with either side of the track, to form continuous rolling tracks. This ensures smooth passage of wheels and reduces jerks, enhancing the life cycles of both wheel and crossing.

The crossings have flexibly moving points and splice rails. Longitudinal compensation during setting is achieved through a special bolting between the points, and splice rails which permit relative displacement. As a result, there is no need for an expansion joint in the closure rail. The use of standard rail sections ensures a wide selection of material.
Designs are available with or without a continuous base plate.

Advantages

 

Fabricated Crossings

Fabricated or Built up (Bolted) crossings are made by machining of rolled sections of rails and these suit the resilient condition of the railway track. These Crossings can be repaired by surface welding in-situ to enhance their service life. These can be single or double (Diamond) or Multiple (Scissor) crossings.