HARDFACING PROCEDURE AND MODERN EQUIPMENTS IN G. D. R.

This paper describes the recent developments of hardfacing procedures and advanced automatic welding systems in The Central Institute of Welding of The German Democratic Republic. The "A-B-Z-V" system, or hardfacing-loading-filler material-procedure, makes it well choosing the deposit procedure and the filler materials. The morden overlaying systems, according to the classification of hard faced compoments, are provided, such as ZIS12-63——specifically programing robot designed to hardface rotators, ZIS12-96——automatic equipment designed for internal hardfacing bores, ZISl3-43——hardfacing unit suitable for rails, ZIS15-40——portable hardfacing welder, robot designed for the hardfacing of side plates and robot for hardfacing the coal-ball forming dies.