Vacuum Heat Treatment & Brazing
Vacuum Heat Treatment & Brazing
Vacuum heat treatment is now a well established practice in the aerospace (OEM and repair), land based turbines, automotive and tool industries.
The main advantages of this process are:
- Bright oxide-free finishes
- No carburisation or decarburisation
- Fluxless brazing
- Controlled heating
- Repeatability
- No hazardous fumes or toxic waste.
Consarc vacuum furnaces are recognised as industry standards in many specialised applications such as:
- Solution heat treatment of single turbine blades
- Hardening of tool steels
- High vacuum brazing
- Vapour phase aluminising of turbine blades and vanes
- Hydrogen sintering of honeycomb seals
- Diffusion bonding of titanium turbine fan blades
- Vacuum Sintering of Powder Metals.
Consarc vacuum furnaces are also widely found in more general heat treatment applications such as bright annealing, stress relieving and tempering.
Graphite & Metallic Hot Zones
Consarc offers graphite and metallic hot zones, with graphite being the heat treaters' preferred option for most processes due to its longer life, lower replacement cost and reduced power consumption. Composite hot zone constructions utilising metallic, graphite and/or ceramic fibre materials are also available to meet specific customer requirements.
Convection Heating
Fan assisted convection heating systems are offered for operation in the temperature range up to 750C where heat transfer by radiation is not at its most effective, particularly with densely packed loads. These systems allow faster heating rates leading to greater furnace efficiency in operations such as tempering and provide overall cycle time reductions in all heat treatment operations
Gas Quench
Gas quench systems are available to meet process requirements ranging from fan assisted cooling to rapid, uniformly controlled Multiflow high pressure quenching operations.
Quench rate in a vacuum furnace is directly related to both the pressure and velocity of the gas. Consarc exploits both these factors, with pressures of up to 10 bar and velocities in excess of 90ms-1 (200mph). The design of the gas ducting, flow distribution and heat exchanger are optimised to maintain the uniformity of high cooling rates developed by the turbine type blower throughout the furnace.
Configurations - Horizontal, Vertical and Clamshell
Consarc manufacture a wide range of horizontal, bottom loading and top loading vacuum heat treatment furnaces. Consarc also offers the unique Clamshell ® split chamber furnace design with its inherent advantages of easy access for loading and maintenance. All furnaces can be engineered to meet a variety of customer requirements with working sizes ranging from 30 to 2000 kg.
The following tables list our standard range of models but Consarc can manufacture specific systems to meet customer requirements. Power supply can be altered to suit individual load weight and charge configurations.
Clamshell Furnace - Standard Sizes
| Model No. | Diameter (mm) | Height (mm) | Power(kVA) | Water(l/min) | Approx. Floor Space(mm) |
| FVS 32-45-51 | 450 | 510 | 45 | 95 | 3300W x 4100D x 2300H |
| FVS 42-61-76 | 610 | 760 | 110 | 395 | 3900W x 4600D x 2900H |
| FVS 51-76-76 | 760 | 760 | 150 | 450 | 4500W x 5700D x 2900H |
| FVS 51-76-90 | 760 | 900 | 180 | 450 | 4500W x 5700D x 3200H |
| FVS 56-100-100 | 1000 | 1000 | 200 | 490 | 5000W x 6500D x 3500H |
| FVS 56-122-137 | 1220 | 1370 | 275 | 490 | 5200W x 6500D x 3750H |
| FVS 56-150-150 | 1500 | 1500 | 400 | 490 | 5700W x 6500D x 3900H |
Horizontal Furnace - Standard Sizes
| Model No. | Width(mm) | Height(mm) | Length(mm) | Power(kVA) | Water(l/min) | Approx. Floor Space(mm) |
| FH 60-45-60 | 600 | 450 | 600 | 75 | 95 | 5500W x 4800D x 3650H |
| FH 60-60-60 | 600 | 600 | 900 | 110 | 395 | 5500W x 5000D x 3750H |
| FH 76-60-90 | 760 | 600 | 900 | 150 | 450 | 5900W x 5000D x 4000H |
| FH 76-76-90 | 760 | 760 | 900 | 200 | 490 | 5900W x 5200D x 4000H |
| FH 90-76-122 | 900 | 760 | 1220 | 250 | 490 | 6500W x 7000D x 4700H |
| FH 90-90-122 | 900 | 900 | 1220 | 275 | 490 | 6500W x 7000D x 4700H |
| FH 100-100-150 | 1000 | 1000 | 1500 | 400 | 490 | 7400W x 7500D x 4850H |
Bottom Loading Furnace - Standard Sizes
| Model No. | Diameter(mm) | Height(mm) | Power(kVA) | Water(l/min) | Approx. Floor Space(mm) |
| FVB 86-122-150 | 1220 | 1500 | 300 | 490 | 5800W x 5800D x 6200H |
| FVB 96-150-150 | 1500 | 1500 | 375 | 550 | 6000W x 6000D x 6200H |
| FVB 96-150-180 | 1500 | 1800 | 390 | 550 | 6000W x 6000D x 6500H |
| FVB 96-180-180 | 1800 | 1800 | 450 | 550 | 6300W x 6300D x 6500H |
| FVB 106-200-200 | 2000 | 2000 | 480 | 600 | 6500W x 6500D x 6700H |
Top Loading Furnace - Standard Sizes
| Model No. | Diameter(mm) | Height(mm) | Power(kVA) | Water(l/min) | Approx. Floor Space(mm) |
| FVT 18-25-25 | 250 | 250 | 15 | 55 | 1350W x 1750D x 1700H |
| FVT 32-45-60 | 450 | 600 | 50 | 100 | 3300W x 2700D x 3000H |
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