Abstract
Hot isostatic pressing technology is considered one of the most progressive modern methods for the production of billets and products from metal powders. This technology is most widely used for the production of dense, non-porous products from metal powders, as well as for the densification of shaped castings, for example, from titanium alloys. At the same time, the microstructure of pressed products made of atomized metal powders is distinguished by a particularly high dispersion and uniformity, and the pressed material - by increased strength and toughness. A characteristic feature of the technology is the use of a form-building tooling - a capsule that changes its geometry under barothermal action, to which a number of rather stringent requirements are imposed. In the structure of such a capsule, it is customary to distinguish between two elements - the shell, or the capsule itself, and the embedded elements that shape the complex external and internal surfaces of the future product and are removed at the final stages of the technological process. The article deals with the selection of materials and methods for manufacturing structural elements of capsules for hot isostatic pressing of metal powders in the context of the identified shortcomings, hazards and risks of the existing process, determines the conditions and outlines measures to reduce and eliminate them.
Keywords
Hot isostatic pressure, capsule, metal powder, structural element, embedded element.