Tool and die steels are covered in BS 4659:1989,although both American nomenclature and a variety of trade names are also in use. Available in high-quality grades, these specifically-designed steels can be grouped broadly according to their intended applic…

Date：2013/05/16

Selective hardening is applied because of one or more of the following reasons:(1) Parts to be heat-treated are so large that conventional furnace heating and quenching becomeimpractical and uneconomical - examples are large gears, large rolls and dies;(2)…

Date：2013/04/08

High-level surface heating of a thermo technically massive body, when the cooling of the surface to be hardened happens due to abstraction of heat into the body so that the hardening medium is not required, is of both practical and theoretical interest. Ti…

Date：2013/04/08

Heat Treating is the process of heating and cooling a steel to obtain desired properties. Various types of heat treatment processes are used to change the following properties or conditions of the steel: - Improve the toughness - Improve the machinabilit…

Date：2013/03/28