For high-precision induction hardening, a vertical induction scanner is ideal for hardening a wide range of pins, axles, shafts and rollers. Hardness depths up to 15mm can be achieved.
Dimensions: Max parts diameter 175mm, Max length 1800mm
Flame hardening is a reliable and time-proven alternative to other types of heat treatment and the savings can be tremendous.
Flame hardening will save you money and help increase profits, because it…
gives higher hardness for increased life
provides more efficient productivity
reduces downtime and maintenance costs
hardens selected areas only
reduces costs because of less coverage
less distortion
less machining and grinding, and
less processing time
Rolls and Shafts
Flame hardening is the best and sometimes the only way to heat treat large rolls.
Minimum distortion and higher surface hardness is combined with ductilitiy and core strength.
The ‘progressive spin’ method ensures a uniform hardness over the entire roll surface.
We can flame harden rolls up to 1000mm in diameter.
Sheaves, Rope Drums and Slew Rings
Flame hardening dramatically reduces wear on load bearing rope groove areas and bearing surfaces on slew rings and thrust bearings.
We Can Perform Full or Partial Groove Area Hardening.
Lifting Capacity 20 Tonnes
Machine Ways and Rails
Today’s modern flexible machining systems and automated transfer lines have many flame hardened components, including
Replaceable Ways
Fabricated Basesmachine Ways and Rails
Precision Guide Rails
Cast Beds and Pallets
Whatever your needs, we have the experience to process these parts for optimum results.
Dies and Moulds
Flame hardening of dies and moulds reduces wear and increases die life.
Large automotive dies provide ideal examples of the proper application of flame hardening and can be handled as readily as small ones.
Smaller dies may require hardening of shut-off or runner areas only. Instead of buying new dies, flame hardening allows the reworking of old dies by making shape modifications and re-flame hardening.
Dies can be finished and tried out before they are finally flame hardened for production runs.
The flame hardened areas are usually adjacent to the die working faces so there is a minimum of heat exposure which eliminates distortion.
Applications
Plastic mould dies
Metal stamping, blanking, forming and shearing dies
Suitable materials
Alloy steels
Plain carbon steels
Ductile iron
Cast iron
Stainless steels
Gears and Sprockets
Replacement of worn gears can be expensive, time-consuming and difficult.
Increase the life of gears, sprockets and gear racks with flame hardening.
By only hardening the wear areas of the gears, the base metal keeps its original tensile strength.
General through-hardening, normalising and tempering of small or large components is possible in our atmosphere-controlled stress relieving furnaces or large bogie hearth furnace.
oil hardening steels
air hardening steels
Max dimensions: L 3800mm, W 1400mm, H 1500mm
Anealing
Components requiring annealing can be processed in one of our vacuum-sealed quench or bogie hearth furnaces, depending on the size of the component and the surface finish required.
The Alpha Heat Treatment standard nitriding process uses a controlled gas atmosphere incorporating a diffusion stage. This eliminates the detrimental effects of the ‘white layer’ which occurs in conventional nitriding processes.
This coating gives a great looking black finish, combined with excellent protection against rust. Our ‘hot liquid bath’ process is also long lasting and very durable, even when parts are subjected to flexing. We offer a 24 hour service. Faster turnarounds can be arranged.
Maximum dimensions: Diameter 450mm, Length 500mm
Architectural Blackening
At Alpha Detroit Heat Treatment we can also blacken large architectural pieces by hot dipping steel into quenching oil.
Although not as good a coating as the authentic black oxide coating, it results in a slightly uneven mottled blackened look which appeals to some customers for a non-corrosive environment, giving a rustic blackened appearance.
Maximum dimensions: Length 3,000mm, Width 1,150mm, Height 1,350mm
