Abstract
The purposes of the 19th Sectional Committee (Special Steel Material Section) of the Japan Society for the Promotion of Scientific Research are in the investigation and study of causes of defects which occur in special steel materials and also of methods of preventing such defects. In order to accomplish the objects, special care should be taken for the heating and cooling of the steel materials and their forging operations. The Sectional Committee has first examined the forging operation, and found that the names of various operations employed in different works in Japan and the methods of representing the forging ratio are varied. After careful investigation and study, those which are used in comparatively large number of the works have been adopted, and a method of representation has been established. The results are herein published. It is desired that the works in general will accept the recommendations of the Committee.
