Technology and equipment for hydrostatic treatment of materials

Abstract

The main requirements of the quality of products are the homogeneity of technological and service properties, the improved characteristics of strength and plasticity, endurance and brittle failure resistance. In recent years many investigations into developing the High Hydrostatic Pressure Technologies (HHPT) and equipment to meet these requirements have been carried out by scientific schools of Academicians, L. F. Vereshchagin, G. V. Kurdyumov, A. I. Tselikov and A. A. Galkin in the USSR. The physical basis of these technologies is represented by the plastic deformation effects under high pressure: material plasticization’, strain ageing², decrease of a carbide inhomogeneity³, use of a liquid as a machining tool⁴ etc. HHPT are widely spread and especially promising in metallurgy as the ferrous metals account for more than 96% of the total structural material consumption in machine building, while assortment of products is about 5000 profile sizes of bars, 30 000 profile sizes of tubes, 50 000 types of metalware.