Most vacuum furnaces currently active in the heat-treating world incorporate some form of, or combination of, graphite-felt insulation, with either a foil or board internal facing in the furnace hot-zone construction. The graphite felt used in high-temperature furnaces is either PAN-based or Rayon-based.

Insulating castable refractories Plicast LWI 24 HS and aluminum-resistant Plicast Al-Tuff LWI 24 HS are both a safe choice for lightweight refractory linings inside high-temperature furnaces, incinerators boilers.

Sandvik acquired privately owned Thermaltek Inc., a manufacturer of high-temperature furnace systems and metallic heating elements based in Concord, N.C. Thermaltek operates out of a 42,000-square-foot facility with approximately 30 employees. According to Sandvik, the acquisition adds strength to its position in industrial heating, a strategically important growth area for our Kanthal division within Sandvik Materials Technology. Thermaltek, which will continue to go to market under its own brand, will be reported as part of the division Kanthal within business area Sandvik Materials Technology.

High-temperature furnaces must withstand high temperatures that melt materials, such as titanium, without damage.

Many factors come into play during the vacuum sintering process, from the size and materials used in the furnace hot zone to whether debinding and sintering processes are combined in a single unit.

Founded way back in 1912 as the “Replaceable Heating Elements” company in New York, Lindberg/MPH was named after the owner’s patented, replaceable heating elements for research heating applications.

High-temperature furnaces must withstand high temperatures that melt materials, such as titanium, without damage. Usually made of graphite, these furnaces frequently cause contamination with reactive carbon, which can cause damage to the manufactured products. Fully metallic furnaces and heating elements made of suitable materials, on the other hand, are a clean solution. 

Redi-Shapes precast shapes are designed to help steel and aluminum makers significantly reduce the time and labor costs required to repair furnace refractory linings.

Vacuum sintering is one of the unsung heroes of industrial metallurgy. In this crucial process, materials are heated in a vacuum environment until they are almost at the point of melting.

Andritz received an order from China’s HBIS Group Co. Ltd. to supply two strip processing furnaces. One furnace is for a continuous annealing line and will be used to produce the latest generation of advanced high-strength steels (AHSS). The annual capacity of the line is 825,000 tons. The second furnace is for a continuous hot-galvanizing line to produce hot-rolled products up to 6 mm thick. The annual capacity of the line is 412,000 tons. Production of the first coil on these two lines is scheduled for the first quarter of 2020.