VACUUM FURNACE

Heat treatment equipment. Vacuum furnace
MAIN PAGE

return to main page of heat treatment equipment

 

VACUUM FURNACES FOR SINTERING AND HOT PRESSING

 

VACUUM FURNACES FOR SINTERING WITH DEWAXING

To achieve a high density and to remove gases and contaminants with preliminary sintering and removal of the binder, the vacuum sintering furnace with dewaxing of casting metal under pressure can be performed in a gas atmosphere where muffle gas output will remove binders or other outgassing products, preventing them contact with the heating element and the area at the same time improving temperature uniformity. The actual sintering process may be performed under high vacuum or in a gas to remove any contaminants from the article. This design ensures that the parts are disengaged completely through the gas flow during the output cycle of the binder and sintered to full density.

 

VACUUM FURNACES FOR SINTERING WITH DEWAXING
Vacuum furnace for sintering

All control of flow, temperature and partial pressure is computerized and automated. All operating data, such as temperature, gas flow, pressure, total power and gas consumption recorded for each pass.

This type of furnace performs cost-effective production and ensures high quality as well as an appropriate effective method.

 

The use of furnaces:

  • Solid Metals & Materials (borides, carbides, nitrides, silicides).
  • Refractory metals.
  • High-speed tool steels.
  • Permanent magnets, tantalum capacitors.
  • Speed steel and stainless steel.
  • Materially ceramic such as SiC, SiN, BC, Al2O3.

Furnaces Features:

  • Treatment of any metal with any binder.
  • Treatment in nitrogen, hydrogen, argon or air.
  • Treatment from atmospheric pressure to partial pressure and high vacuum.
  • Programmable control of any parameter in any segment, while output of the binder or sintering.
  • Less process gas, electricity, less processing time and footprint is used.

 

VACUUM PRESSES FOR HOT PRESSING

Vacuum furnaces for sintering in hydrogen are specifically designed to meet the needs of a diversified market and demanding customers.Reliable, user-friendly design of equipment helps to increase productivity, improve product quality. Furnaces are equipped with an automatic electric drive with pneumatic clamps for easy and full access to the loading area. The heating zone is made of refractory material, ensures rapid heating and temperature uniformity. Protective atmosphere provides uniform heating furnace working space, the surface quality of finished products and energy saving. Furnaces have good security features and reliability.

VACUUM PRESSES FOR HOT PRESSING
VACUUM PRESSES FOR HOT PRESSING

The use of furnaces:

  • Sintering of Ta-alloys, molybdenum, tungsten carbide.
  • Sintering of magnetic and iron alloys.
  • Sintering of bronze, brass, stainless steel.
  • Sintering of steel alloys.

 

The advantage of furnaces:

  • An independent system of protection against overheating.
  • Instant cooling system.
  • Analyzer of the race point of gas atmosphere.
  • Heating system bottom of the furnace to achieve the exact parameters of temperature uniformity.

 

VACUUM PRESSES FOR HOT PRESSING

Vacuum presses for hot pressing process all known ceramic materials. Presses are available with insulation of graphite, tungsten, molybdenum mesh with the heating zone formed of carbide. As a protective atmosphere high vacuum, inert environment, reducing atmosphere, oxidizing atmosphere can be used. Equipment body is made of steel plate that protects the press from changes such as distortion or deformation occurring in the conventional welded frame. The design of the equipment makes the possibility of processing products under high pressure, pre-calculated theoretically. Vacuum presses can operate at high temperatures of the heating zone, have a multilayer insulation and complex thermal control system. The alarm system, hydraulic and atmospheric pressure control valves, control system lock, equipment stop, water supply and control system provide additional safety overheat.

Hot vacuum presses
Hot vacuum presses

The use of presses:

  • Vacuum sintering materials.
  • Diffusion bonding.
  • Ceramic technology.
  • Metalworking.

 

The advantages of the presses:

  • Improved performance and safety.
  • Passed quality control for safety.
  • Temperature uniformity.
  • Automatic control and data acquisition system.
  • Simple thermal dewaxing process, a sintering process under high pressure.

 

VACUUM FURNACES FOR HEAT TREATMENT

General characteristics of vacuum furnaces for hardening, tempering and soldering

Heat treatment of details in a vacuum furnace is an established practice in the aerospace industry (production and repair), production of land-based turbines, automotive, manufacturing tools. In a vacuum, which excluded any surface modification, such as carburizing, oxidation, scaling or decarburization. After treatment in a vacuum furnace products acquire a bright and clean surface, and in some cases, ready to use. Heat treatment in vacuum can be applied to a wide range of heat treatment, from hardening, to tempering, aging, annealing. The process of vacuum heat treatment is reproducible type of heat treatment. Both process - heating and cooling can be performed in a furnace chamber. Design of vacuum furnaces is accompanied by increased quality control.

heat treatment in vacuum

The use of furnaces:

  • Hardening of tool steel.
  • Soldering in high vacuum.
  • Aluminizing of turbine blades and vanes.
  • Sintering in hydrogen cell seals.
  • Diffusion welding of turbofan blades.
  • Carburizing injection system.
  • Carburizing gear elements.

 

Advantages of vacuum furnaces:

  • The equipment may be integrated into the production line.
  • purification steps exception.
  • bright, without oxidation of the surface of finished products.
  • flux-free solder.
  • Controlled heating.
  • Reproducible process.
  • No toxic waste and hazardous gases.

 

 

heat treatment in vacuum furnace

 

Vacuum hardening furnace

This furnace is the most advanced vacuum hardening furnace with gas hardening system, designed for a wide range of thermal treatments, including cooling, hardening, tempering, degassing, annealing and soldering speed steel and special products of the aerospace industry. The furnace has a compact design, is equipped with a high speed fan, heat exchanger. The equipment has minimum consumption of gas, electricity, water and a working space. Insulation and heating elements provide long and reliable service of the furnace.

Advantages of the furnace:

  • Performance 100- 2000 kg.
  • The heating element is made of metal or graphite.
  • Hardening gas quality. Max. pressure of 9 bar.
  • Easy to operate. Human-machine interface.

 

Vacuum Hardening furnace.
Vacuum Hardening furnace.

The use of furnaces:

  • Alloy steel, stainless steel, elastic alloys.
  • Hardened stainless steel.
  • Heat treatment in the aerospace industry.
  • Heat treatment of bearing steel.
  • Heat treatment of stainless steel.
  • Heat treatment of titanium alloys.

 

Vacuum tempering furnace

The process of tempering is carried out by immersing the product in the furnace chamber for a time necessary to bring to the product of the strength and ductility. Tempering is a complex process, in the process of tempering it is necessary to pay attention to the time, temperature uniformity, the cooling process. In addition, the product should not lose bright metal surface after the procedure. Vacuum furnaces for tempering perfectly follow the above conditions. The line is made of heating nickel, chromium, equipped with a thermal shield of SUS304steel, vacuum pump, rapid cooling system and automatic control panel is versatile, reliable and user-friendly design.

Vacuum tempering furnace .

The use of furnaces:

  • Alloy steel, flexible alloy, stainless steel, bearing steel.
  • Hardened stainless steel.
  • Heat treatment in the aerospace industry.
  • Heat treatment of bearing steel.
  • Heat treatment of stainless steel.
  • Heat treatment of titanium alloys.

The advantage of furnaces:

  • Uniformity of temperature is achieved through the circulation of hot air.
  • Performance 100- 2000 kg.
  • The heating cables are made of nickel or chromium.
  • Easy to operate. Human-machine interface.
  • Programmable temperature control.

 

Vacuum soldering furnaces

Soldering of metals occurs when the brazing material comes in contact with the diffusion metal components during the vacuum heat treatment. Finished products are bright and clean. Furthermore, vacuum soldering of parts is an environmentally friendly process. In absence of oxygen flux for soldering is required, the final product does not contain pores and is not oxidized. The vacuum soldering furnace offers one of the most reliable methods of connection products, having a number of advantages. These furnaces are particularly recommended for manufacturers of tools and complex parts.

Vacuum soldering furnaces.

The use of furnaces:

  • Aerospace.
  • Satellite connection.
  • Electronics.
  • Medicine.
  • Nuclear fusion and splitting.

The advantage of furnaces:

  • Flux-free soldering.
  • No hazardous gases and toxic wastes.
  • Uniformity of temperature.
  • Excellent air tightness and reliability.
  • Synchronicity of vacuum brazing and heat treatment.
Full specifications of vacuum furnaces for soldering (click to read more)

 

Vacuum induction furnaces

General characteristics of vacuum induction furnaces

Initially, vacuum induction furnaces used to make alloys of certain properties to meet the requirements of specialized industries. Nowadays production of high quality materials with a wide range of applications is the most important task. Alloys obtained by treatment in an induction furnace used in very difficult situations, including super alloys that can withstand the highest possible temperature, stainless steel for nuclear applications, as well as magnetic alloys with high purity and permeability.
Thus, vacuum induction furnace is an indispensable tool for the production of special alloys that require processing in a vacuum or in an inert gas atmosphere to avoid a reaction with atmospheric oxygen. Vacuum furnaces are ideally suited for metals with a high degree of purification without the presence of oxidation impurities.

Vacuum induction furnaces are particularly suitable for melting and casting of iron, nickel, cobalt and their alloys, in vacuum or controlled atmosphere to achieve the desired production requirements, providing high performance, ease of operation and low maintenance costs.

Vacuum induction furnaces

The use of furnaces:

  • Melting and casting of special steel and alloys with very complicated composition in vacuum atmosphere or inert gas atmosphere.
  • Shaped castings.
  • Production of powder.
  • Directional solidification / casting of single crystals.
  • Casting electrodes.
  • Continuous casting.

The advantage of furnaces:

  • Easy to operate, maintain, precise control.
  • High level of operational reliability and good accessibility.
  • The ability to batch processing of small dimensions.
  • Automatic control and data processing (drawing up the minutes).
  • Reliable protection system of vacuum atmosphere.
  • Low production costs.
  • A wide range of standard accessories and options to fully adapt to the specific requirements of the customer.
  • Strict control of the chemical composition of the alloy.

 

Vacuum induction furnaces for melting in skull

Melting in a vacuum induction skull - the method of metal melting in segmented, copper induction coil chamber, a water cooling system in vacuum in order to produce reactive metals and alloys of high purity and low content of impurities. Vacuum induction melting furnace in skull is used mainly for processing reactive metals.

The use of furnaces:

  • Metal products of high purity.
  • Reactive metal: titanium, zirconium, tantalum.

The advantage of furnaces:

  • Low cost of feed material.
  • Suitable for simultaneous processing of various alloys in a furnace chamber, eliminating the possibility of cross chemical reactions.
  • They work under an inert gas under pressure, which eliminates or minimizes losses of alloy.
  • Characterized by short cycle times.

 

 

Vacuum furnaces for arc remelting

Vacuum arc remelting furnaces (VAR process) perform a process of continuous remelting in vacuum. Advantages of arc remelting is allocation of a large amount of energy and control need. Innovative technology, design management systems and processes, allows processing in a vacuum of special steels, super alloys, alloys of iron, nickel, cobalt, titanium, to achieve strength properties, heat resistance and the quality of the components products.

Vacuum furnaces for arc remelting (ВАР proccess)

The use of furnaces:

  • Super alloys for the chemical industry.
  • Special alloys for the electronics industry.
  • Special alloys for the aerospace industry.
  • Structural steel for the turbine and generator shafts.
  • Melting of reactive metals (titanium, zirconium and their alloys).

The advantage of furnaces:

  • Removal of associated gases, such as hydrogen and nitrogen.
  • Minimizing the content of unwanted trace elements with high vapor pressure.
  • Increased rates of metals purity and their alloys.
  • Directional solidification, low shrinkage of the metal.
Vacuum furnaces for arc remelting (ВАР proccess)