Abstract: A method of cooling a load provided in a load compartment in a furnace chamber of a furnace of a hot isostatic pressing device includes releasing hot pressure medium from the load compartment. Cool pressure medium is provided for enabling it to fall through the released hot pressure medium outside the load compartment. The thus obtained mixed pressure medium is led into the load compartment. A hot isostatic pressing device includes a load compartment having an aperture near an upper portion thereof configured to vent warm pressure medium into a region surrounding the compartment and a conduit configured to introduce cool pressure medium into the region surrounding the compartment for mixing with the warm medium. The compartment also includes an aperture near a lower portion thereof configured to receive a mix of warm and cool pressure medium from the region surrounding the compartment.

Abstract: The invention relates to a press of pressure cell type, which comprises a press chamber in which a diaphragm device is arranged. The diaphragm device includes a diaphragm which together with a press plate forms a pressure cell and is adapted to exert a forming pressure on a workpiece in the press chamber. The edge area of the diaphragm is placed in an annular diaphragm support. The press of pressure cell type also comprises actuating means which are adapted to actively exert a force on the diaphragm support in the direction of the press plate, the diaphragm support pressing the edge area of the diaphragm against the press plate so that an initial seal is provided between the diaphragm at its edge area and the press plate, which seal is built up when supplying pressure medium to the pressure cell by expansion of the diaphragm. The invention also relates to a diaphragm device, a method for applying a pressing power and a method for exchanging a diaphragm in a press of pressure cell type.

Abstract: The present invention relates to an isostatic press for high pressure treatment of a product having a temperature below 0° C., said isostatic press comprising a pressure chamber adapted to contain a first pressure medium, and a container which is placeable in the pressure chamber. The container which is placeable in the isostatic press is adapted to hold the product and a second pressure medium, the container being closable to keep the first pressure medium separated from fluid communication with the second pressure medium. The container is further provided with a pressure transfer means device adapted to transfer pressure from the first pressure medium to the second pressure medium, and a body which is made of a material with low adiabatic heat emission relative to adjoining substances, so that the body from adjoining substances absorbs heat, which is generated by adiabatic temperature rise during the high pressure treatment.

Abstract: The present invention relates to a press of pressure cell type, a tray for use in a press of pressure cell type and a method. The tray comprises a tray frame, which defines a space for arranging a forming tool and/or a work-piece. Prestressing means are arranged on the external surface of the tray frame and induce a compressing prestress which acts in planes parallel to the plane of the tray. The tray frame presents a curvature along its entire circumference.

Abstract: The invention relates to a forming tool for forming sheet blanks in a diaphragm press of the kind comprising an openable, closed pressure chamber, which is divided in a gas and liquid tight manner by means of a flexible diaphragm. The forming tool is arranged on one side of the diaphragm and a sheet blank to be formed is arranged between the forming tool and the diaphragm. The opposite side of the diaphragm is pressurized by a fluid being supplied at high pressure to cause the flexible diaphragm to deform and, thus, the sheet blank to be pressed against the forming tool. The forming tool comprises an elongate cutting and flanging tool along at least part of its periphery and/or around an intended opening in the sheet blank.

Abstract: A method for durability treatment or sterilization of a pumpable material by high pressure treatment of the same in a high pressure press for killing and/or inactivating harmful microorganisms and enzymes in the material includes placing the pumpable material into a flexible bulk container with a larger volume than the end-user or consumer containers in which the material is intended to be packed, placing the bulk container in a high pressure press and subjected to high pressure treatment, removing the bulk container from the press. The material may be moved from the bulk container to end-user containers by arranging, in a sterile manner provided, connector on the bulk container, which, via a tube connects the interior of the bulk container with an emptying system, for the purpose of draining the pumpable material into the end-user or consumer containers, or into an intermediate storage tank.

Abstract: A method for durability treatment or sterilization of a pumpable material by high pressure treatment of the same in a high pressure press for killing and/or inactivating harmful microorganisms and enzymes in the material includes placing the pumpable material into a flexible bulk container with a larger volume than the end-user or consumer containers in which the material is intended to be packed, placing the bulk container in a high pressure press and subjected to high pressure treatment, removing the bulk container from the press. The material may be moved from the bulk container to end-user containers by arranging, in a sterile manner provided, a connector on the bulk container, which, via a tube connects the interior of the bulk container with an emptying system, for the purpose of draining the pumpable material into the end-user or consumer containers, or into an intermediate storage tank.

Abstract: A method to provide a high pressure press with a replaceable wear liner. The wear liner is first inserted into the cylindrical pressure chamber of the press and the pre-stressed by the application of an excess pressure above the yield point. The excess pressure is sufficient to increase the diameter of the wear liner and produce a residual radial compressive stress that holds the wear liner in place. When the wear liner is removed from the press it is dismantled. The advantage of the invention is that the replaceable wear liner, and a high pressure press comprising it, may be relatively inexpensive to produce and the replaceable wear liner may be quickly and simply replaced.

Abstract: The invention relates to a method for durability treatment or sterilisation of a pumpable material by high pressure treatment of the same in a high pressure press for killing and/or inactivating harmful microorganisms and enzymes in the material. In the method, the pumpable material is filled into a flexible bulk container (1) with a larger volume than the end-user or consumer containers in which the material is intended to be packed. Then the bulk container is placed in a high pressure press and subjected to high pressure treatment at a pressure of at least 2000 bar. After completed high pressure treatment, the bulk container is removed from the press.

Abstract: A device for molding objects includes a mold having a molding space enclosed therein and adapted to be filled by a fluid mold material intended to solidify therein. The fluid mold material is injected under pressure into the molding space and solidifies under this high pressure. A chamber receives the mold and is filled with a medium. The medium filling the chamber and surrounding the mold is pressurized. The pressurized medium acts upon the mold from all directions with at least the same pressure magnitude as the pressure of the mold material within the mold. Therefore, the mold is isostatically balanced by the forces acting upon the mold by the mold material and the medium.

Abstract: An isostatic press for hot isostatic pressing having a pressure vessel (1) in which a furnace chamber (2) is arranged with a space (3) between the furnace chamber (2) and the walls of the pressure vessel (2). The furnace chamber (2) has a heat-insulating mantle and heat-insulating top wall and bottom wall, and passageways (5, 6) are arranged in the walls of the furnace chamber (2). A gas outlet means is arranged in the interior of the furnace chamber (2). Gas is removed directly from the furnace chamber (2) by the gas outlet means. Advantages include that treated articles (11) are cooled rapidly, as cooling takes place during the same time as decompression. Articles (11) may also be rapidly cooled to a temperature at which they are easily handled.

Abstract: A device in hot isostatic pressing has first, second and third pumps. The first pump is adapted to pump a cooled pressure medium emanating from a cooling loop in the pressure vessel upwardly from a first space to a second pump which is arranged in a second space located above the first space but below a load space. The second pump is arranged to pump a mixture of the cooled pressure medium and a warm pressure medium emanating from the second space upwardly through the load space. The third pump is arranged in the second space to pump a warm pressure medium emanating from this space to the second pump for pumping the warm pressure medium by the second pump.

Abstract: A device in a pressure vessel for hot isostatic pressing utilizing a furnace chamber (3) surrounded by a heat insulating member (4), a carrier (5) arranged in the furnace chamber and adapted for carrying loads (6) and which has lateral walls (8) with a space with respect to said member. An arrangement (12) for heating gases present in the furnace chamber is arranged in the bottom region (11) of the chamber and the lateral walls of the carrier are provided with layers (17) having a high heat insulating capacity.