Heat Treating Services
After castings and/or
machinings, many parts require heat treatment services. We can
provide the heat treatment services to our customers at minimal
costs. Heat treatment services include:
1. Annealing:
Slowly cool down in furnace to soften cast alloy steels
before machining.
2. Normalizing:
Cooling in the air to increase impact strength and toughness, with
low hardness. Some parts that could not be water quenched or oil
quenched, can be harden with normalizing, e.g. martensitic stainless
steels, high alloyed cast irons, Nihard, NiResist etc.
3. Quenching:
Usual way to get the hardness. Either water quenching or oil
quenching is available, depending on type of alloys. Ductile cast
irons and high alloyed steels are normally quenched in oil. While
medium carbon steels can be quenched in water.
4. Induction Hardening:
With induction hardening, parts can be harden to have high hardness
at the surfaces, while retain toughness inside. Examples of parts
candidate for induction hardening are gears, sprocket wheels,
shafts, links, etc.
5. Surface Hardening:
Besides induction hardening, many parts can be surface harden by
means of nitriding, carburizing and carbonitriding. Furnaces may be
atmosphere controlled or vaccuum furnaces. Case depths vary upon
hardening methods.
6. Tempering:
After hardening, parts need to be tempered to increase
its ductility and toughness. Internal stresses are also decreased
with temper.
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