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Heat Treatment

Heat treating is a process in which metal is heated and cooled under tight controls to improve its properties, performance and durability. One of the best ways to shape metal is by applying heat in great temperatures so it softens and can be easily worked. Below are some ways in which metals can be altered through heat treatment:

 

  • Batch Furnaces: An insulated heating system that manually treats metal and handles one work load at a time

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  • Continuous Belt: Metals parts pass through a primary heating chamber for rapid thermal processing on an assembly line treatment system

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  • Induction: A process where heat is induced within the part itself by circulating electrical currents

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  • Vacuum: This heat treatment method allows for an even heating of the metal due to the lack of external elements that could temper with the process. Most often, this is done by evacuating a tightly sealed heat treating chamber by means of a vacuum pumping system

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  • Annealing: A process used to reduce hardness, increase ductility and help eliminate internal stresses

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  • Brazing: A process which joins parts by heating them and applying a filler metal that has a melting temperature below that of the base metal. Filler metal flows into the joint by capillary attraction. Brazing is typically done with a torch or in a furnace

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  • Nitriding: A surface hardening treatment where nitrogen is added to the surface of metals during heating to improve durability

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  • CarboNitriding: An austenitic case hardening process with the addition of nitrogen, used to increase wear resistance and surface hardness through the creation of a hardened surface layer.

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  • Carburizing:  A surface hardening treatment which absorbs carbon during the heating process

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  • Tempering: Heating a metal to a specific temperature in order to remove the hardness and increase the strength

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  • Quenching: Quenching is a rapid way of bringing a metal back to room temperature heat treatment to prevent the cooling process from dramatically changing the metal's microstructure

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  • Normalizing: Material is heated to a temperature approximately equivalent to the hardening temperature

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  • Cryogenic Treating: Metal is cooled to extreme temperatures, which is beneficial for corrosion and stress

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  • Steam Treating: An oxide layer is steamed over the surface of a metal to increase density, magnetism, and corrosion resistance

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  • Stress Relieving: A process where material is heated to a point under its critical temperature, but high enough to induce relief of stresses placed on the metal by welding, cold working and extensive

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  • Flattening: During the heating process, metals are also subjected to pressure so the overall shape is flattened

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  • Straightening: A machine press heats metal parts, while simultaneously adding stress in order to straighten the piece

 

Globally, industries are making major advancements in the operations involving the heating and cooling process of metal. This is due to the wide number of benefits heat treatment offers when it comes to certain desirable mechanical and physical characteristics.

 

The global heat treating market size is expected to reach USD 122.34 billion by 2025, according to a new report by Grand View Research, Inc. Increasing penetration of metal treatment services in automotive, aerospace, construction, energy, and metalworking applications is expected to act as a key market driver.

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Is your business taking full advantage of the thousands of eligible candidates working in the heat treating industry? The Heat Treating Recruiters at Laminin Corp can help. Contact us today!

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