Vacuum TreatmentsVacuum Hardening
Vacuum hardening is an improvement over conventional hardening in that the component surface is protected from possible negative effects of exposure to a gaseous atmosphere. Vacuum treated material is quenched in gas or liquid, depending on the specification requirements. The expression “vacuum hardening” is used here to differentiate the process from conventional hardening. It should also be noted that “hardening” is usually referred to as “quenching”. BENEFITS- Increased strength
- Increased hardness
- Improved fatigue life
- Increased wear resistance
Not sure which process or service is right for you? Contact our global team of heat treat experts and let them guide you or fill out the contact form to put you in touch with one of our experts!
Vacuum TreatmentsVacuum Tempering
Not sure which process or service is right for you? Contact our global team of heat treat experts and let them guide you or fill out the contact form to put you in touch with one of our experts!Vacuum Tempering is almost always required after hardening, both in an atmosphere furnace as well as in vacuum, to reduce the hardness and brittleness of the treated material to a desirable level. Generally, it is not necessary to use vacuum tempering after vacuum hardening, i.e., conventional tempering is most of the time used. Vacuum tempering may be used on high-value products when a totally clean surface appearance is required. The expression “vacuum tempering” is used here to differentiate the process from “conventional tempering”.BENEFITS- Reduces the stress after quenching
- Reduces the brittleness generated by only hardening/quenching
- Increases material toughness
- Precise control of the hardness level
Vacuum TreatmentsVacuum Annealing
The process is virtually identical to conventional annealing, except that premium quality vacuum annealing protects a component’s surface from chemical reactions with gases present in the atmosphere. Not sure which process or service is right for you? Contact our global team of heat treat experts and let them guide you or fill out the contact form to put you in touch with one of our experts!
Vacuum TreatmentsVacuum Brazing
Vacuum Brazing uses a vacuum furnace, but it is not, strictly speaking, a heat-treating process. Brazing is a process of joining two components with a metallic bond by briefly liquefying the latter while the assembly is under vacuum conditions. Not sure which process or service is right for you? Contact our global team of heat treat experts and let them guide you or fill out the contact form to put you in touch with one of our experts!
Vacuum TreatmentsVacuum Carbonitriding
Vacuum carbonitriding is a thermal process of simultaneously diffusing both carbon and nitrogen into ferrous alloys under partial pressure. This leads to an extremely hard and wear-resistant surface. Vacuum carbonitriding is a significant improvement over conventional gas carbonitriding. The process contains all of the inherent benefits of vacuum carburizing, but also has the additional benefit of precise computer control of surface ammonia content. Furthermore, this process does not require any additional refractory burnouts so not only is the end product of higher quality, but it is often less expensive than with competing conventional gas processes.Not sure which process or service is right for you? Contact our global team of heat treat experts and let them guide you or fill out the contact form to put you in touch with one of our experts!
Vacuum TreatmentsVacuum Carburizing
Vacuum carburizing is a state-of-the-art thermal process where carburizing is effected under very low pressures. First the parts are heated in vacuum to above the transformation temperature of the alloy. Then they are exposed to carbon-carrying gas, or gas mixtures, under partial pressure. Nitrex has developed a revolutionary process called “Pulse- Pressure”, a method quickly becoming the industry standard. Relative to conventional carburizing, the main advantages of the method are:- repeatable results to within ±0.001″ (±25µm),
- significantly reduced size changes and distortion,
- improved fatigue strength,
- better control of the surface layer chemistry,
- the process is environmentally friendly
