Vacuum Systems
The core competency of PVA TePla is to build systems for vacuum and pressure sintering of hard metals. The COD plants designed for this purpose are also supremely suitable for sintering ceramics, a material that is being used in increasing measure in car and engine production due to its low specific weight.
Tools with outstanding material properties such as abrasion resistance and therefore tool life are manufactured in the thermal sintering processes under vacuum conditions and the subsequent hot isostatic processes under gas pressures of up to 100 bar. The high temperature regularity of the PVA TePla systems ensures that the products are all of a high quality.
One key industrial process, namely the melting and casting of metals, generates considerable benefits for the quality and precision of end products when performed under vacuum conditions. The process involves the melting and cleaning of precious metals, the alloying of special materials in graphite and ceramic crucibles, and the casting of blocks and moulded parts free of holes and pores. Vacuum melting and casting facilities are used, for example, to purify gold and platinum by melting, as well as for moulded items such as machine parts, turbine blades, medical implants such as hip joints, and heart valves. Vacuum processes performed under high temperatures ensure that no oxidation occurs and that the workpieces remain free of pores. This, in turn, means uniformly pure materials with very low variation in physical parameters.
Vacuum Heat Treatment Systems
 | The core competency of PVA TePla is to build systems for vacuum and pressure sintering of hard metals. The COD plants designed for this purpose are also supremely suitable for sintering ceramics, a material that is being used in increasing measure in car and engine production due to its low specific weight. |
 | COV Heat Treatment Systems with Graphite Resistance HeaterCOV heat treatment systems are high performance most efficient furnaces with a wide working-temperature and application range. Due to the compatibility with all kind of process gases and the fully automatic process ...  more |
 | COD Vacuum-Pressure Sintering Furnances (Sinter HIP)COD Sinter-HIP furnaces combine the dewaxing, vacuum-sintering and subsequent isostatic densification under pressure gas of metals and ceramics. COD systems optimize all the necessary process functions and ... more |
 | MOV Heat Treatment Systems with Metal Resistance Heater
MOV heat treatment furnaces are ideal for the treatment of sophisticated materials if high temperatures and an absolutely clean hydro-carbon free atmosphere are required. |
| IOV Induction Heated Heat Treatment-SystemsInductively heated vacuum heat treatment systems with high operating temperatures specially for the manufacture of hard materials. Standardized components for a broad application spectrum and useful space volumes ... more |
| VSG: Vacuum-Melting- and Casting Systems
Proven and economic solution for the inductive melting of materials under vacuum-/protective gas-atmosphere and casting. |
Special Systems
Special Systems for research systems
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 | Multi-chamber brazing system ABI The multi-chamber brazing system ABI is ideally suited for the economic brazing of mass parts. Originally this system has been developed for the brazing of metal-ceramic over voltage arrestors (Arrestor Brazing In-Line). more |
 | Vacuum-DryerPVA vacuum / gas or air circulation drying systems are available as batch systems in chest type construction for integration in cleaning lines or as a separate cabinet version and, where special applications are ... more |
 | Vacuum Pressure Sintering System MODBased on the graphite heated sinter HIP furnace series COD, PVA has designed, in accordance with the special process requirements, a vacuum - pressure sinter furnace for carbon sensitive MIM parts, designed as ... more |
 | Hydrogen Drying OvenThis furnace is equipped with a gas circulation system which .serves to accelerate the drying process of hard metal parts in a hydrogen rich environment. A modern SPS is integrated to enable Monitoring of the load being treated ... more |
Special Components
 | Research facilities require consistently special designed systems and components for their plants. manufactures and supplies those components along the customers design and specification. In particular for the plasma and fusion research, but also for synchrotron labs, physical institutes of universities or aerospace industry PVA TePla supplies special components since many years meeting the high standards required in basic and application-oriented research as well. |
 | Positive Ion Neutral Injector "PINI"Research on fusion energy is basically plasma research on big machines. The design, engineering and manufacturing of these machines and their components is an essential part of the research. Knowledge from many fields have to be collected and combined to build and improve those research plants... |
 | Gridholder System
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 | Port - ScreeningScattered particles hit the walls of the confinement everywhere. Especially in the region of feedthroughs and ports in the vessel particular screening is needed. The component shown consists of a double walled header tube with 13 cooling fingers. Each finger consists of an inner stainless tube as water feed, a outer tube of TZM for the return and the actual beam stopper from graphite. These parts from different materials are brazed and welded to each other, the structure is leaktight to better than 10-9 mbl/sec. To achieve the mechanical accuracy of 0.3 mm in parallelism and angle for the cooling fingers to eachother has been a ambitious requirement.... |
| RF-Source housingThe walls consist of 6 mm stainless steel sheet and have Ø 3 mm lengthwise drills for the water cooling. The manifold channels are intgrated in the flanges. The walls are palted with electrodeposited copper on the inside to optimize the conditions for discharge and heat distribution. Several of these housings have been delivered to Max Planck Institut für Plasmaphysik (IPP) in Garching.... more |
| Ion Source for IPP Garching – RADI ExperimentThe source body is approx. 800 x 760 mm big. The backplate carries 4 RF driver units and is slidable to allow an optimizing of the source volume for maximum dicharge efficiency. Water cooling is realized by lenghtwise channels in the walls. In particular the challenge has been to realize the radial sealing to a leak tightness of 1 x 10-9 mbl/s for the backplate in the big welded wall construction. The source is used by IPP to analyze discharge conditions with respect to ITER.... more |
| NeutraliserHigh precision chambers made of water cooled copper walls, where an ion beam can be charge exchanged to a neutral atomic beam in a neutral gas. To avoid deflection of the incoming ion beam by the nearby strong magnetic fields, the whole neutraliser is screened by pure iron. Connections for beam diagnostics, thermocouples and water cooling, the component is designed to be used in high vacuum. The neutralisers shown come in operation in WENDELSTEIN 7-X, Max Planck Institute for Plasma Physics. ... more |
| Heat transfer elements HTEFor diagnostic purposes ion beams are shot directly to beam dumps. The components shown are called Heat Transfer Elements (HTE) and form a water cooled beam dump surface. 240 of the shown Heat Transfer Elements are used in SST-1 in Institute for Plasma Research, Ahmedabad, India. They are made from CuCrZr by EB welding, He-leak rate is smaller than 10-9 mbarl/sec and they are operated with a cooling water pressure of approx. 15 bar. The HTE's have to absorb up to 1 kW/cm2 in a steady state operation, peak load can be more than 2 kW/cm2 in a 15-20 sec pulse ... more |
- 02/23/12
CIPVTrade Show in Beijing, China
more - 03/29/12
Annual Report 2011