The large 476 and 952 cubic foot capacity Despatch TAD/ TFD walk-in ovens are the perfect choice for annealing large-size or large batch metal components. Multiple temperature operations are controlled by up to eight programs. The interior is aluminized steel and features a plate floor with truck tracks for easy accessibility into the chamber. Maximum temperature is 343°C (650°F).
The Despatch LBB forced convection oven offers temperatures up to 204°C (400°F) which is ideal for annealing plastic. The stainless steel interior and top-mounted fan and heater make this oven a great choice for applications that may create spills. A combination of horizontal and vertical airflow offers excellent temperature uniformity. Available in benchtop and cabinet sizes.
The LAC benchtop and cabinet ovens features horizontal recirculating airflow for exceptional temperature uniformity up to 260°C (500°F). The size and temperature of this oven also make it an ideal choice for annealing plastics. The LAC also features easy-to-use programmable controls, a design that is easy to clean and service and superior quality.
Despatch’s LCC and LCD benchtop clean process ovens offer air or nitrogen atmosphere and temperatures up to 260°C (500°F) or 350°C (662°F). These characteristics make the LCC/LCD ovens the perfect choice for annealing product that requires a clean process, such as medical device plastics. The ovens are stackable so you can increase production without losing space.
Despatch’s LCC/LCD2-14 clean process cabinet ovens offer the same temperature capabilities as the benchtop models in a larger size, and add a third atmosphere option of Class A. The LCC/LCD2-14 annealing ovens are designed to meet the demands of production and large scale R&D environments and are CE compliant.
These reach-in ovens have exceptional temperature uniformity up to 343°C (650°F). The higher temperature capability is suitable for annealing or aging metals. The RFD Class A model was designed to meet NFPA requirements for annealing applications that include flammable solvents or large amounts of moisture removal.
The large size and maximum 343°C (650°F) temperature of the TAD/TFD walk-in ovens make these models a perfect choice for annealing large-size or large batch metal components. Multiple temperature operations are controlled by up to eight programs. The interior is aluminized steel and features a plate floor with truck tracks for easy accessibility into the chamber.
Despatch offers a wide selection of high performance industrial ovens designed for annealing applications. These annealing ovens feature a variety of chamber sizes and temperature capabilities, as well as exceptional temperature uniformity, flexibility and tight process control and monitoring.
Despatch’s high performance annealing ovens are used around the globe within a variety of industries, including technology, transportation, healthcare and industrial manufacturing.
Annealing is the most commonly used for treating metals, but other materials, including glass and plastics, can be annealed. Depending on the material, annealing temperatures range from less than 100 degrees C to more than 1000°C., a process that can take hours or several days.
During the annealing process, a metal, plastic or glass is heated to a specifi c temperature or color and then the metal is cooled at a controlled, specifi ed rate. This process changes the physical and chemical properties of the material to make it more malleable, or improve ductility; provide stress relief and create a new microstructure.
A specialized annealing oven gives users the ability to tightly control and monitor the heating and cooling process, allowing for proper recrystallization to occur within the material. The materials are annealed at the eutectic point and then allowed to cool. Annealing often softens the materials so they can be shaped or cut more easily, but can also increase its strength and ductility. Metals are often annealed to prepare them for further heat treatments.
Annealing Metal PipesThe environment; temperature maintained, both during and after the annealing process; and cooling rate are critical. Typical temperatures used in heat treating the most common materials include:
Annealing is not required in all plastic molding; some stresses can be eliminated without the annealing process, depending on the design and materials.
Annealing plastics is recommended based on the following conditions:
These are usually non-uniformed stresses that can lead to premature failure. Advantages of Annealing Plastics Plastics that have been stress relieved offer:
Plastics require different annealing conditions and temperatures:
Despatch designed and built a custom FCH2-12 furnace for a special component annealing application. Per the customer’s request, the FCH incorporated HEPA filtration of fresh air and a 316L interior for improved chamber cleanliness. Other features included modulating dampers on the fresh air and exhaust to allow a controlled cooling rate and a large forced exhaust fan to promote rapid cooling after a cycle. A Watlow F4 controller with WatView software was provided to support a variety of cycle profiles with a highly flexible profiling controller.
The FCH2-12 furnace is available with standard design features including 1350°F (732°C) maximum temperature rating, 7 inches of layered insulation, 304 stainless steel fully welded interior, horizontal airflow with adjustable supply and return louvers and a 5 HP recirculation drive motor. The oven is capable of temperature uniformity of ±1% or better after stabilization. This oven is compatible with a variety of high temperature processes.