Steels as a Material for Rail Tracks...

Steels as a Material for Rail Tracks Railways were originally uniquely identified with the material of their initial construction and now are technically identified by the characteristic contact of ?steel wheel on steel rail?. The phrase ?Railways need steel ? steel needs railways?, defines the relationship between steel industry and the railways. Presently railways rely on a wide variety of steels for its materials requirement. It is since steel meets the requirements of cost, weight, reliability, crashworthiness, maintainability and inspection required by the railways. Large varieties of steels are used by railways for its requirement for (i) rolling stock (locomotives, coaches, and wagons), (ii) rail tracks (permanent way), (ii) electric traction, and (iv) infrastructure. A wide variety of steels is needed by railways. These include flat products, structural products, bar and wire products, special products like rails, wheels and axles, tubular products and steels for reinforcement. Steels required by railways are in the form of castings, rolled products and fabricates products. The quality of steels needed by railways varies with the application. The quality of steels used are mild steel, other plain carbon steels, alloy steels, high strength steels, wear resistant steels, corrosion resistant steels, spring steels, electrical steels, and stainless steels etc. Further some steels need special processing to meet the specific requirements of railways. The requirement of various steels is getting updated on a continuous basis with the advancement of rail engineering. For this, railways and the steel industry work in close co-ordination with each other. The rail track is known as a stable structure. It ensures the transportation of trains through providing a dependable surface for their wheels. As to the development of rail track, it has a long history. The first rail track was made of wood and had continued...