A process in which tooling plugs are inserted to critical areas of the part during the quenching process to limit the dimensional changes of the part such as a spline.
Gleason Die Quenching
A quench press is a machine that uses concentrated forces to hold an object as it is quenched. These types of quench facilities are used to quench large gears and other circular parts so that they remain circular.
Vacuum Heat Treating
Vacuum furnaces are used in a wide range of applications in both production industries and research laboratories. At temperatures below 1200 °C, a vacuum furnace is commonly used for the heat treatment of steel alloys. Many general heat-treating applications involve the hardening and tempering of a steel part to make it strong and tough through service. Hardening involves heating the steel to a predetermined temperature, then cooling it rapidly in water, oil or suitable medium.
Hardening - Atmosphere
Atmosphere – Martensitic transformation, more commonly known as quenching and tempering, is a hardening mechanism specific for steel. The steel must be heated to a temperature where the iron phase changes from ferrite into austenite.
Automated Gas Nitriding
In gas nitriding the donor is a nitrogen-rich gas, usually ammonia (NH3), which is why it is sometimes known as ammonia nitriding. When ammonia comes into contact with the heated work piece it dissociates into nitrogen and hydrogen. The nitrogen then diffuses onto the surface of the material creating a nitride layer.
Hardening - Neutral salt bath
Salt baths are used in a wide variety of heat treatment processes including neutral hardening, liquid carburizing, liquid nitriding, austempering, martempering and tempering. Parts are loaded into a pot of molten salt where they are heated by conduction, giving a very readily available source of heat. The core temperature of a part rises in temperature at approximately the same rate as its surface in a salt bath.
Case hardening is specified by "hardness" and "case depth". The case depth can be specified in two ways: total case depth or effective case depth. The total case depth is the true depth of the case. For most alloys, the effective case depth is the depth of the case that has a hardness equivalent to HRC50; however, some alloys specify a different hardness (40-60 HRC) at effective case depth.