BULLETIN VOL 75

ISBN: 9780260725530 Géneros: TB Sinópsis: Excerpt from Bulletin Vol 75 Proceedings SeptemberOctober 1973The history and development of the design of rail is depicted with emphasis on how design changes came about as needs for greater strength and stiffness devel oped as a result Of service failures and as problems Of existing designs were recognizedThe chemical composition Of rail steel has undergone a number of changes as to the percentages of various constituents such as carbon manganese and silicon Other elements such as chromium vanadium molybdenum titanium columbium and aluminum have been added in various amounts in an effort to produce a tougher and stronger rail steel that would better resist abrasion deformation and the development Of various types Of defects These problems have increased in recent years due to the upward trend in wheel loads train speeds and locomotive horsepowerFull heat treatment oil quenched and tempered and several manners of surface hardening of conventionalanalysis steel rails have been developed and employed in an attempt to retard the development of service problems that are common under adverse loading conditionsAbout the PublisherForgotten Books publishes hundreds of thousands of rare and classic books Find more at wwwforgottenbookscomThis book is a reproduction of an important historical work Forgotten Books uses stateoftheart technology to digitally reconstruct the work preserving the original format whilst repairing imperfections present in the aged copy In rare cases an imperfection in the original such as a blemish or missing page may be replicated in our edition We do however repair the vast majority of imperfections successfully any imperfections that remain are intentionally left to preserve the state of such historical works