Brothers Inspection offering the following NDT (Non Destructive Testing) Services:- Positive Material Identification(PMI), Ultrasonic Testing, Radiograpy Testing, Magnetic Particle Testing , Dye Penetrant Testing and many more of Non Destructive testing available from Us. Although we support our client projects with many more NDT disciplines (see our list under Specialist manpower) these are the main NDT services offered independently on a project basis.
Heat Treatment is the controlled heating and cooling of metals to alter their physical and
mechanical properties without changing the product shape. Heat treatment is sometimes done
inadvertently due to manufacturing processes that either heat or cool the metal such as
welding or forming.
Heat Treatment is often associated with increasing the strength of material, but it can also be
used to alter certain manufacturability objectives such as improve machining, improve
formability, restore ductility after a cold working operation. Thus it is a very enabling
manufacturing process that can not only help other manufacturing process, but can also
improve product performance by increasing strength or other desirable characteristics.
Steels are particularly suitable for heat treatment, since they respond well to heat treatment and
the commercial use of steels exceeds that of any other material. Steels are heat treated for one
of the following reasons:
1. Softening
2. Hardening
3. Material Modification
Common Heat treatment
Softening (Stress Relieved) : Softening is done to reduce strength or hardness, remove
residual stresses, improve toughnesss, restore ductility, refine grain size or change the
electromagnetic properties of the steel.
Restoring ductility or removing residual stresses is a necessary operation when a large
amount of cold working is to be performed, such as in a cold-rolling operation or
wiredrawing.Annealing full Process, spheroidizing, normalizing and tempering austempering,
martempering are the principal ways by which steel is softened.
Hardening : Hardening of steels is done to increase the strength and wear properties. One of
the pre-requisites for hardening is sufficient carbon and alloy content. If there is sufficient
Carbon content then the steel can be directly hardened. Otherwise the surface of the part has
to be Carbon enriched using some diffusion treatment hardening techniques.
Material Modification : Heat treatment is used to modify properties of materials in addition to
hardening and softening. These processes modify the behavior of the steels in a beneficial
manner to maximize service life, e.g., stress relieving, or strength properties, e.g.,cryogenic
treatment, or some other desirable properties, e.g.,spring aging