GB410121A - Process for producing grooved rails and railway rails - Google Patents

Abstract

410,121. Making railway rails. EVANS, 0., 27, Chancery Lane, London.- (Vereinigte Stahlwerke Akt.-Ges.; 69, Breitesstrasse, D³sseldorf, Germany.) Nov. 7, 1932, No. 31429. [Classes 83 (i) and 83 (ii).] Casting composite articles.-A compound ingot, for use in rolling rails, is made by pouring hard or manganese steel into one compartment of a partitioned mould, removing the partition while the steel is still molten in the interior, and pouring soft steel to fill the mould. In some cases the soft steel is poured first. The partition 2 may take the form shown in Figs. 2, 8, may have its edges packed with asbestos to prevent leakage, may be held in place by stays 7 which are removed with the partition, and may be provided with a ring 34, Fig. 14, so that a head 35 is formed to prevent the second pour from overflowing into the shrinkage space. If poured from the top the block cast first may be held in position by a staple 9, Fig. 3, by a rod 13, Fig. 4, or one or more recesses 12 in the base 10, or by more than one of these means. The second or both pours may be from the bottom. Two compound ingots may be cast in one large mould by inserting a dividing plate on both sides of which a partition 2 is arranged. A large compound ingot may be forged, to reduce its cross section, and cut into a number of small ingots which are rolled to form rails. For double headed rails with two hard treads, ingots with two hard steel blocks 30, Fig. 12, and one soft steel body 31 are cast. The partition may be coated to prevent it from sticking to the cast metal.