Machining Chips Research Articles

Basic Factors in Hot-Machining of Metals

Abstract This paper presents the results of research on the influence of basic metal-cutting quantities when machining metals at elevated temperatures. Much of the investigation centered around some of the commoner high-temperature alloys. Studies on the mechanics of cutting at elevated temperatures were made in which such basic quantities as chip friction, shear strength, and machining constant were measured. In addition, tool-chip interface temperatures were calculated. These data were correlated with data obtained from milling tool-life tests on the same materials. Two main factors oppose each other in their effect on tool life in hot-machining. These are the increased ease with which the heat-softened tool material can be abraded away and the decreased ability of the heat-softened chip and workpiece to produce such abrasion. It was found that these two factors can be evaluated roughly from tool-temperature data taken in combination with data on the mechanics of cutting.

高速度鋼屑より特殊金屬囘收に就て

The present paper deals with recovery of special metallic elements from scraps of the refining, melting, fabrication and machining, the surface scalings, grinding and machining chips and ingot scraps of high-speed steels containing cobalt, tungsten and vanadium, as follows:-I. Introduction.II. Different grades of scraps from the manufacture of high-speed steel.III. How cobalt, tungsten and yanadium may be recovered from the high-speed steel scraps?IV. Conclusfon.