In short, heat treating is used to achieve the desired properties of the alloy such as hardening or softening. There are multiple methods used to do this, annealing, quenching, and tempering are a few.
These are two different methods that are opposites. Surface hardening is used to stiffen a steel. Usually a steel is heated, a catalyst is applied to the surface and then the steel is quenched in an oil bath or waterbath, this hardens the surface of the steel. Annealing on the other hand, the steel is heated and then allowed to cool slowly. This softens the steel and allows it to be drawn or hammered to form a different shape.
because it removes the tempering(hardness) of the object, generally on the surface, and makes it easier to work the metal without ruining your tools or "work" hardening the surface.
annealing for steels
spherodizing, normalizing, full annealing, process annealing, and stress relief
Annealing is making something stronger or more resolute. An example sentence would be: The annealing has to be done before it's complete.
The annealing temperature may be too low for this experiment.
Annealing is the heat treatment given to a semiconductor material. Annealing is the process by which the lattice damages are repaired. The damages are generally done by ion implantation on semiconductor material.
annealing means the process of heating a metal to increase its softness and reduce its brittle nature.
Generally used to improve the properties of the metal. For example to make it tougher or harder. Metals that have been cold worked will have areas of built up stress, which will waken the metal. Heat treatment can be used to remove the weak areas. Which heat treament is used depends on the desired properties of the final metal. Some examples are : Annealing Normalizing Quench Hardening Case hardening
mostly is the hardening done by induction hardening machine, I know also manufactures that do this using the flame hardening method.
in my opinion surface hardening is applied only on the surface while the true hardening is applied in the whole part of the metal....