Furnace/

Heat Treating Furnaces

Heat treating furnaces heat a material and then bring it to a desired temperature. From there the material is cooled, which allows the furnace to instill increased strength, or aging within the material. This allows manipulation of the material to alter the physical, chemical and mechanical properties. The physical properties most often refer to how hard or soft the material is. Heat treating furnaces add billions of dollars per year in value to metal products, especially steel and nonferrous products, by imparting specific properties to the parts. These properties are often critical to the proper function of the heat-treated parts.

TevTech, LLC
North Billerica, MA
978-667-4557
TevTech provides laboratory and industrial high temperature vacuum furnaces and components. Custom products include Sintering systems, CVD reactors, graphitization systems, graphite purification systems, crystal growers, gas distribution systems, metal or carbon hot zones and process control systems. Our engineers support our high temperature furnace systems with training and maintenance.
Furnace Brokers, Inc.
Tolland, CT
860-875-3712
We buy and sell industrial heat treating furnaces and industrial baking ovens worldwide, including walk in ovens, cabinet ovens, heat treat furnaces, induction heaters, vacuum furnaces and internal oil quench furnaces. We have the largest database of available heat treating equipment in the world. Check out our inventory by visiting our website today!
The GRIEVE CORPORATION
Round Lake, IL
847-546-8225
The Grieve Corporation is a manufacturer of industrial furnaces-electric box furnaces, high-temperature furnaces plus pit, bench and floor furnaces. We have been providing highly sophisticated, quality furnaces since 1949. Contact us for your needs.
Keith Company, Inc.
Pico Rivera, CA
800-545-4567
Furnace manufacturer, Keith Company, makes standard or custom furnaces that will process a vast range of products and materials. Laboratory furnaces, gas furnaces and electric furnaces are among our products. Aerospace, foundry, heat-treating, specialty metals and other manufacturers benefit from our products. Keith Company works hard to meet or exceed your expectations. Give us a call today!
S.M. Engineering Co. Inc.
North Attleboro, MA
508-699-4484
S.M. Engineering builds the world`s finest annealing furnaces, belt furnaces, multiple tube furnaces, batch furnaces & retort pit furnaces for solving a variety of electronics strip annealing, brazing & heat treating problems for electronics annealing, automotive & jewelry manufacturers. In business since 1958 and looking forward to bringing you quality customer service & products 53 years later!
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Industry Information

Heat Treating Furnaces

Some of the industries that are served by heat treating furnaces include pharmaceutical, automotive, packaging, assembly, electronics and textile. Techniques used by heat treating furnaces include precipitation strengthening, annealing, aging, quenching, tempering and selective hardening. Hardening can be broken down further to differential, flame, induction or case hardening. Precipitation strengthening involves changes in solid solubility as temperature varies. Annealing can be used for normalizing or stress relieving and comprises the processes of heating, holding temperature and then cooling in order to accomplish a specific state for the material being heated. Aging or precipitation hardening results in a softer metal. Quenching is quickly cooling from a high temperature. Tempering is often used on brittle materials to make it tougher, it can also be used to manipulate the color of the metal. Case hardening involves making the surface layer of a steel material substantially harder through heat treating.

Heat treating furnaces employ a process that involves three steps. First, the part is heated to a specified temperature (up to 2400.25ºF). It is then held at that temperature for the required amount of time, which may be as short as a few seconds or as long as 60 hours. Finally, the part is cooled either in the furnace or by quenching methods, depending on how quickly the part needs to be cooled. Things to keep in mind when purchasing are uniformity, control, airflow and rate of rise. Uniformity is ensuring the temperature is the same throughout the system. Control regards how easily the system is monitored and adjusted.  Airflow refers to the type of ventilation you want/need. Finally, rate of rise regards to how fast you want to be able to increase the temperature.