ALD Vacuum Technologies GmbH
ALD Vacuum Technologies GmbH
ALD Vacuum Technologies GmbH | Date: 2015-06-29
The decontamination of contaminated graphite, in particularly of irradiated graphite. According to the present invention, this means a method of separating volatile radionuclides from contaminated graphite and transforming the graphite together with non-volatile radionuclides into a form which is suitable for final disposal. The method according to the present invention comprises the step of heating up the contaminated graphite for obtaining treated graphite, a step of compacting the treated graphite for obtaining a molded body and optionally a step of embedding the treated graphite in a matrix material for obtaining a sheathed molded body. The molded body comprising the treated graphite can be finally disposed and stored under low safety requirements depending on the country-specific requirements. So the volume of such material which requires a particularly laborious and thus particularly cost-intensive final disposal and storage, in particularly an underground storage in deep ground regions, can considerably be reduced. The last one also results in considerably reduced costs, when contaminated graphite which accrues every year in high amounts has to be disposed.
ALD Vacuum Technologies GmbH | Date: 2017-05-24
The present invention relates to the decontamination of contaminated graphite, in particular of irradiated graphite. According to the invention, this is understood as meaning a method for separating volatile radionuclides from contaminated graphite and transforming the graphite together with non-volatile radionuclides into a form appropriate for ultimate storage. The method according to the invention comprises heating up the contaminated graphite to obtain treated graphite, compacting the treated graphite to obtain a formed piece and optionally embedding the treated graphite in a matrix material to obtain an encapsulated formed piece. Depending on the requirements specific to the country concerned, disposal and storage of the formed piece comprising the treated graphite is possible with less demanding safety requirements. As a result, the volume of such material that requires particularly sophisticated and consequently particularly cost-intensive disposal and storage, particularly storage deep underground, can be reduced significantly. This also leads to significantly reduced costs for the disposal of contaminated graphite, large quantities of which occur on an annual basis.
ALD Vacuum Technologies GmbH | Date: 2017-01-11
The invention relates to a hybrid crucible comprising a frame and a base plate. Said crucible is characterized by the selection of materials for the two crucible components, optimized in terms of heat conductivity. The crucible is suitable for producing crystalline materials. A method is also described.
ALD Vacuum Technologies GmbH | Date: 2015-03-06
A hybrid crucible comprising a frame and a bottom plate. The crucible is characterized by the selection of material of these two components, which have been optimized in terms of thermal conductivity. The crucible is adapted to produce crystalline materials. Moreover, a method for producing crystalline material is disclosed.
ALD Vacuum Technologies GmbH | Date: 2016-12-09
The invention relates to a method and device for thermally treating workpieces, the device including a cooling chamber and two or more carburizing or heating chambers in which the workpieces are heated to a temperature of 950 to 1200 C. by means of radiation, such as direct heat radiation from a heating device.
Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: NMP.2011.4.0-1 | Award Amount: 17.87M | Year: 2012
The ExoMet proposal revolves around innovative liquid metal engineering and the application of external physical fields, in order to significantly influence the microstructures and properties of light alloys, such as aluminium and magnesium. Three types of external fields will be explored, namely: electromagnetic, ultrasonic and intensive mechanical shearing. To meet the future EU challenges of lightweighting and pollution reduction, especially relevant in transportation, it is necessary to improve the castability of light alloys, to enhance grain and eutectic refinement in monolithic alloys, and to develop new high-strength nanocomposites using nano-reinforcers which have only recently become available. Significant mechanical property improvements are foreseen in ExoMet - including 50% increases in tensile strength and ductility, as well as creep resistance up to 300-350 degC (currently limited to about 200 degC in Al and Mg alloys). This applies to both shape castings and wrought products like extruded profiles, bar, cable, sheet and plate. Manufacturing scale-up will be tackled in ExoMet, using a variety of techniques such as low and high-pressure die casting, sand casting, investment casting, differential-presssure casting, twin-roll casting, ultrasound-assisted casting and twin-shear casting. The application of external fields to these industrial techniques is novel and would bring about major savings in energy, scrap and processing cost. Having developed the field-enabled processes and produced high-quality light alloys and nanocomposites, the next stage of ExoMet will be prototypying and the assessment of industrial applications in four selected commercial sectors: (i) automotive powertrain and chassis, (ii) aircraft and aero-engine structures, (iii) space satellite and rockets, and (iv) high-strength high-conductivity Al electrical cabling. Computer modelling, rig-testing, standardisation, life-cycle analysis and patenting will also be undertaken.
ALD Vacuum Technologies GmbH | Date: 2015-11-25
A method for producing metal alloys. The method allows the production of metal alloys consisting of at least two metals having a high melting point difference. Here, the higher melting metal is melted first and the lower melting metal is melted with a delay by means of heat transfer whereupon the metals mix together. This enables to obtain metal alloys with high purity and low evaporation losses, which in particular allow the use of contaminated starting components such as recycled metal.
ALD Vacuum Technologies GmbH | Date: 2014-01-16
A mobile melting device for consolidating contaminated scrap and to a corresponding method. The melting device has a crucible chamber and a crucible base. The crucible is arranged on the crucible base during operation, and the crucible base and the crucible chamber together form a gas-tight furnace housing. It is thus possible to carry out the method in a vacuum or under protective gas such that even a reactive material can be consolidated. The melting device can be assembled and disassembled with little effort.
ALD Vacuum Technologies GmbH | Date: 2014-04-15
A process and apparatus for thermochemically hardening workpieces is provided incorporating the following steps, carried out in a variable sequence: one or more carburizing steps, each in a carbon-containing gas atmosphere at a pressure of less than 50 mbar, the workpieces being held at temperatures of 900 to 1050 C.; if appropriate, one or more diffusion steps, each in a gas atmosphere at a pressure of less than 100 mbar; and one or more nitriding steps, each in a nitrogen-containing discharge plasma at a pressure of less than 50 mbar, the workpieces being held at temperatures of 800 to 1050 C.
ALD Vacuum Technologies GmbH | Date: 2015-10-01
A remelting furnace is disclosed. An electrode rod drive with an electrode rod, as well as a retaining ring to retain a high-current cable, are arranged on a platform which is located on a weighing cell. Even though the position of the high-current cable changes during lowering of the electrode rod supporting a consumable electrode, the recorded weight portion of the high-current cable remains the same, which means that ultimately the change in the weight of the consumable electrode can be determined with the weighing cell.