Melting Metallurgy: Inductive Melting and Casting under Vacuum

PVA Industrial Vacuum Systems GmbH

Melting Metallurgy: Inductive Melting and Casting under Vacuum _____________________________________________________________________________

Vacuum melting and casting systems (type VSG) allow universal application in the inductive melting of metals, alloys and special materials under high vacuum, fine vacuum and controlled

gas atmosphere. In the laboratory and in industrial production, entire blocks and molded parts

are cast with maximum precision and purity. The main areas of application include processing precious metals such as platinum, gold and silver, high purity and fine-alloy metals as well as

high-precision special alloys and silicon for solar cells. In addition to melting processes such as remelting, degassing, cleaning and homogenization, VSG systems are also the right solution for

precision casting with directional solidification of high-temperature Fe-Ni-Co-based materials.

Melting process

Turbo charger

Precious metal alloys

Vacuum Melting and Casting Systems Type VSG _____________________________________________________________________________

The VSG systems can be universally employed for melting of metals, alloys or special materials in crucibles made of

ceramics or graphite under high vacuum, fine vacuum or

different gas atmospheres with subsequent casting into moulds or forms in laboratory or production.

Applications

Melt treatment Investment casting

• Re-melting und alloying • Precision casting • Degassing and Refining • Directional solidification

• Homogenization melting • Single crystal growing

• Recycling

Werkstoffe • Precious metals: Platinum, Gold, Silver, etc.

• Highly pure, highly alloyed steel • High temperature resistant materials on Fe-, Ni-, Co-basis

• Nonferrous metals

• Solar silicone and special materialse • Special- / superalloys

Characteristics

VSG systems are cold-wall furnaces of corrosion-resistant

stainless steel with water-cooled double wall vessel. The melting and casting device consists of a tiltable induction

coil with coaxial power and coolant feedthrough and the mould table. The material of the applied crucibles is adapted

to the melting material. If the melting material is non-reactive

with carbon, crucibles made of graphite or clay-graphitecan be used. Otherwise ceramic crucibles will be used. Where

required crucibles of high-melting metals may also be employed as far as the melting material does not react

with the crucible material. In these cases, the crucible acts

as a secondary winding for power induction. Power is supplied by static medium frequency converter systems.

VSG systems are available as single or multi chamber

systems and consist of the following basic modules: furnace vessel, vacuum pumping unit, power supply and control

system, melting and casting equipment, as well as vacuum-

lock for melt manipulations. These modules are to be supplemented according to need in different versions

combinable and by an extensive selection of accessory mechanisms.

PVA Industrial Vacuum Systems GmbH _____________________________________________________________________________

PVA Industrial Vacuum Systems GmbH is an internationally established supplier of systems and

facilities for developing, producing, treating and refining sophisticated industrial materials using:

Vacuum

High temperature

Plasma

PVA Industrial Vacuum Systems GmbH is a subsidiary of PVA TePla AG. The Wettenberg-based

company is a leading manufacturer of highly innovative vacuum systems. With more than 1,000

plants on the market and 50 years of experience in the high-temperature field, PVA Industrial Vacuum Systems GmbH builds and markets thermal process plants and systems for the

development, manufacture and treatment of high-quality materials at high temperatures.

In conjunction with its own Application & Innovation Lab, PVA Industrial Vacuum Systems GmbH also supports its customers with individual system and application developments - right

up to series production.

PVA Industrial Vacuum Systems GmbH Phone +49 641 68690-0 Im Westpark 10-12 Fax +49 641 68690-822 35435 Wettenberg E-mail ivsinfo@pvatepla.com Germany Home www.pvatepla-ivs.com