Precious Metals

//Precious Metals
Precious Metals2018-10-27T09:03:44+05:30

Vacuum Melting & Casting

Precious Metals

Vacuum investment casting is the process used in lost-wax technique to get a metal replica from wax or resin patterns.
The pattern is designed and then built in wax or resin by different equipment as CNC, 3D printers, by means of wax injection in a mould, or even manually.
You may use either investment molds or metal permanent molds.
Furnaces or complete foundries setup for casting of Au, Ag, Pt or Pd alloys can be supplied for any application, including vacuum melting into permanent molds.

In detail, TOPCAST offers:
  • TVC Vacuum casting machines (dual chamber system) to get detailed and porosity-free surfaces;
  • TCE Centrifugal vacuum casting machines for high performance levels of the metal, thin and large surfaces, difficult and detailed parts;
  • TVM Vacuum Induction Melting Furnace (VIM) pouring by gravity, to pour large ingots of Platinum and PGM alloys with reduced porosity;
  • FCC Burnout furnaces for wax / resin removal and refractory mould baking.

TOPCAST also provides installation and commissioning on site.

Vacuum Melting & Casting

TVC – Bottom Pouring

TVC are pressure over vacuum casting machine designed to meet the more severe needs in lost wax casting production. They use a bottom pouring mechanism to transfer the metal from the crucible to… Details >

Vacuum Melting & Casting

TCE – Centrifugal Casting

TCE are consistent, robust and easy to use vacuum centrifugal vacuum casting machines designed for small and medium casting laboratories. They can be manufactured in Class A or Class B. TCE in Class… Details >

Vacuum Melting & Casting

TVM – High Vacuum

Vacuum Induction Melting (VIM) furnaces allow to obtain results unattainable by conventional furnaces, since they allow to melt and cast reactive alloys such as titanium or inconel, or reduce the porosity… Details >

Vacuum Melting & Casting

FCC – Burnout and De-waxing

TOPCAST offers a wide range of electrical burnout furnaces for baking molds. They provide also wax removal and collection functions. They provide also wax removal and collection functions. The furnace… Details >

Induction Melting

Precious Metals

TOPCAST induction furnaces can be used for melting precious metals (gold, silver, platinum group family).
The smaller models are with manual extraction of the crucible, the larger ones are tilting crucible.

TOPCAST’s induction furnaces design uses the latest and most advanced IGBTs modules available worldwide.
IGBT-based proprietary design, high-performance induction generator is equipped with soft-switching and frequency automatic tracking technology.

Induction Melting

TMF-R Tilting Furnaces

Topcast TMF-R are coreless induction furnaces capable of melting ferrous, non-ferrous, precious metals. The case of the crucible can be tilted, drive can be electrical, hydraulic or by hand-wheel. Details >

Induction Melting

TMF – Manual Extraction Furnaces

Topcast TMF are induction furnaces of small size capable of melting any type of metal: ferrous, non-ferrous metals, precious. The crucible is extractable by means of special clamps, so the capacity… Details >

Powders / Atomizer

Precious Metals

For precious metal powder production, TOPCAST has developed water and gas Atomizing Furnaces, complete with cyclone filtering system and dryer for a key in hands solution. Gold alloy powders and silver alloy powders are commonly used in SLM systems for 3D rapid prototyping of jewellery.

Powders / Atomizer

TMA-G – Gas Metal Atomizer

TMA is a family of powder atomization plants designed to produce metal powders. They are based on an induction furnace working under protective atmosphere in a chamber where molten metal is poured and… Details >

Powders / Atomizer

TMA-W – Water Metal Atomizer

TMA-W is a family of powder atomization plants designed to produce metal powders. They are based on an induction furnace working under protective atmosphere in a chamber where molten metal is poured and… Details >

Ingots, Sheets, Rods, Tubes, Grains

Precious Metals

TOPCAST designs and manufactures vacuum and inert-gas furnaces for precious metal ingots, sheets, rods and grains production in batch production.

Ingots, Sheets, Rods, Tubes, Grains

TCC – Vacuum Continuous Casting Machines

TCC Vacuum Continous Casting machines have been design with the most up-to-date technologies to give you semi-finished products with the best quality and in the shortest time. With only one machine, you… Details >

Ingots, Sheets, Rods, Tubes, Grains

TIP – Precious Metal Ingots

TIP furnaces are designed to manufacture any size of ingots, from 100 g to kilo-bar either in gold or silver. Details >

Ingots, Sheets, Rods, Tubes, Grains

TVCd-L – Sheets and Rods

This family of furnaces are used to produce high quality semi-finished product, like sheets or rods, starting by raw materials melted by induction heating in a protective atmosphere and then poured in… Details >

Ingots, Sheets, Rods, Tubes, Grains

TVM – High Vacuum

Vacuum Induction Melting (VIM) furnaces allow to obtain results unattainable by conventional furnaces, since they allow to melt and cast reactive alloys such as titanium or inconel, or reduce the porosity… Details >

Ingots, Sheets, Rods, Tubes, Grains

TMF-G – Open System

Topcast TMF-G induction melting plants are made for producing metal grains. The melting crucible pours the metal in a multihole tundish from which the metal droplets drip down in a… Details >

Ingots, Sheets, Rods, Tubes, Grains

TVC-XL-G – Closed System

Topcast TVCd-G furnaces are used to produce high quality and homogenous master alloys grains, starting from raw material molten by induction heating in a protective atmosphere, and then poured into… Details >

Recovery & Refining

Precious Metals

For the refinery and recovery of precious metals, precious ashes melting, alloy homogenization and scraps melting, TOPCAST proposes its wide line of Induction Melting Furnaces, starting from 5 kW to 500 kW.
Joystick-assisted crucible tilting mechanism is provided either with electro-mechanical or hydraulics control.
Supplies may also include water chillers, fume extraction systems and all ancillary equipment for foundries.

Recovery & Refining

TIP – Precious Metal Ingots

TIP furnaces are designed to manufacture any size of ingots, from 100 g to kilo-bar either in gold or silver. Details >

Recovery & Refining

TMF-R Tilting Furnaces

Topcast TMF-R are coreless induction furnaces capable of melting ferrous, non-ferrous, precious metals. The case of the crucible can be tilted, drive can be electrical, hydraulic or by hand-wheel. Details >

Assay & Test

Precious Metals

For precious metal assaying TOPCAST proposes a key-in-hand solution for cupellation assay lab. The offer includes:

  • drill, precision balance and assay preparation mill;
  • a fast and efficient  induction cupellation furnace for assays on multiple sample at a time, capable of reaching the working temperature in very short times. To save energy, the oven can be switched off after work without compromising the heating system;
  • separating hood for multiple assay and fumes scrubber;
  • training of personnel in assay laboratory in the area of Arezzo, Italy.
Assay & Test

TCF – Cupellation and Precious Assay

Cupellation furnaces series TCF are used in the assay process of precious metals alloys. Cupellation is a procedure with the purpose to remove all non noble metal from the alloy to test. Details >