Heat Treatment Furnaces
Posted by Vico Casting Export Company Limited at 30/11/2022
Heat treatment is a series of industrial and metallurgical operations used to change a material's physical, and sometimes chemical, properties. Metallurgical applications are the most popular. Many other materials, such as glass, are also subjected to heat treatments. Heat treatment is the process of heating or cooling a material to severe temperatures to produce a desired result such as hardening or softening. Annealing, case hardening, precipitation strengthening, tempering, and quenching are all heat treatment procedures.
It is worth noting that, while the phrase "heat treatment" refers to techniques in which heating and cooling are done purposely to change attributes, heating and cooling frequently occur inadvertently during other manufacturing processes such as hot forming or welding. Heat treatment is the process of heating or cooling a material to severe temperatures to produce a desired result such as hardening or softening. Annealing, case hardening, precipitation strengthening, tempering, and quenching are all heat treatment procedures.
Metallic materials have a microstructure made up of tiny crystals known as "grains" or crystallites. Heat treatment is an effective method for manipulating metal characteristics by influencing the rate of diffusion and cooling inside the microstructure. During heat treatment, an alloy's characteristics might change due to two mechanisms.
The crystal structure is made up of atoms arranged in a precise pattern known as a lattice. This rearrangement, known as allotropy or polymorphism, can occur numerous times at various temperatures for a given metal. Diffusion causes the atoms of the dissolved element to spread out, aiming to produce a homogeneous distribution within the crystals of the base metal when it is soluble.
When swiftly cooled, many metals and nonmetals undergo a martensite transition. The atoms of the solute become trapped within the lattice as the crystal matrix shifts to its low temperature configuration.
When some alloys, such as steel, are rapidly cooled, the martensite transition hardens the metal, whereas in others, such as aluminum, the alloy softens.