Innovative technologies and methods of hardening dies for pressing hard-composite powder materials

The article analyzes scientific literature, describes basic wear mechanisms of dies for cold pressing powders and presents innovative methods of hardening dies for pressing hard-composite materials. On the basis of the review of domestic and foreign scientific literature and experimental results of the Institute of Hydrodynamics, named after Lavrentyev (Siberian Branch of the Russian Academy of Sciences), the authors offer methods for improving wear resistance and toughness of dies, such as detonation spraying and cold spraying. Additionally, the article outlines the detonation spraying process with the help of the Russian automated complex CCDS 2000 and compares cold spraying with other known coating methods. The authors also consider the main problem of coating dies for pressing hard-composite powder materials by means of detonation spraying and cold spraying. The authors describe the dependence of the quality of coating on certain factors. The theme discussed is urgent for science and many branches of industry since the increase of wear-resistance, toughness and service life allows to reduce production costs and time for machine servicing.