Hot isostatic pressing arrangement

摘要

In an aspect of at least one embodiment of the invention, there is provided a hot isostatic pressing arrangement for treatment of articles by hot isostatic pressing. The arrangement includes a pressure vessel including a furnace chamber including a heat insulated casing and a furnace for heating of a pressure medium during pressing, and a ‘heat exchanger unit’ or heat absorbing material located below the furnace chamber. In another aspect of at least one embodiment of the invention, there is provided a method for treatment of articles in a hot isostatic press. The press further includes a pressure vessel enclosing a furnace chamber and a ‘heat exchanger unit’. The method includes the steps of loading the articles into the furnace chamber, performing pressurized and heated treatment of the articles, cooling the articles and unloading of the articles. All the steps are performed while the ‘heat exchanger unit’ remains located inside the pressure vessel. Heat is transferred to and from the ‘heat exchanger unit’ at different portions of the hot isostatic pressing cycle.

主权项

1. A hot isostatic pressing arrangement for treatment of articles by hot isostatic pressing, comprising:
a pressure vessel including:
a furnace chamber comprising a heat insulated casing and a furnace for heating of a pressure medium during pressing, the furnace chamber being arranged to receive and hold the articles, anda passive heat exchanger unit located below said furnace chamber and arranged for exchanging thermal energy with the pressure medium, wherein the passive heat exchanger unit is arranged inside the pressure vessel such that the passive heat exchanger unit is completely enclosed by the pressure vessel, and does not require an exchange of fluids with a source that is external to the pressure vessel, during operation of the pressing arrangement, wherein the passive heat exchanger unit is arranged such that the pressure medium is used for cooling and heating the passive heat exchanger unit, whereby thermal heat can be transferred from the pressure medium to the passive heat exchanger unit when the passive heat exchanger unit is cooler than the pressure medium during cooling of the articles, wherein thermal heat of the pressure medium is absorbed by the passive heat exchanger unit, and from the passive heat exchanger unit to the pressure medium when the pressure medium is cooler than the passive heat exchanger unit during heating of the articles, wherein thermal heat having been absorbed in the passive heat exchanger unit is dissipated to the pressure medium.