Application Book: Heating Solutions for All Industries | Page 19
PROCESS CONTROL
ANNEALING MANUFACTURING PROCESS
Band Heaters mounted to cylindrical shapes create annealing chambers for small parts. Annealing is a heat
treatment that alters the physical and sometimes chemical properties of a material to increase its ductility and
reduce its hardness, making it more workable.
Application
A manufacturing company processes small steel alloy parts for the electronics
industry. Tungsten rods used as electrodes in crystal processing are a major part
of their business and these require annealing as part of their manufacturing.
Other small steel parts require heat to add or remove minerals from the chemical
composition, or change the grain structure. Test parts are processed one at a time
or in small batches. Different soak temperatures and cooling rates will produce
different results with regards to the metal grain structure. It is necessary that
temperatures are uniform within the chamber to achieve the desired result.
Solution
BriskHeat band heaters provide the heat required for a low temperature annealing
process. To save energy and decrease cycle times, small chambers which may be
made by the customer are used as ovens. Cylindrical heating chambers can be made
from stainless steel or ceramic materials up to 12 inches (305 mm) in diameter
BriskHeat Mica Band Heaters are installed around the circumference of the chamber
and secured in place by the integrated clamps. Several heaters of the same diameter
can be installed as a group to evenly heat the entire length of the cylinder. Each
heater includes an integrated thermocouple for temperature measurement. Cloth
insulators may be used to decrease heat loss. Parts to be heat treated are place inside
the chamber and a lid used to cover the opening to retain heat during the annealing
process. A variety of temperature controllers may be used for each heater depending
on the size and amp requirements. Benchtop controllers such as the SDX or SDC can
be used to control heaters rated for 15 amps or less. For larger heaters, BriskHeat’s
MPC2 series controllers may be the better choice.
BriskHeat Band Heaters can be used for application temperatures up to 850°F
(454°C) and have a high temperature galvanized sheath to provide oxidation
resistance in high humidity areas. Mica insulation provides electrical insulation at high
temperatures. Nickel/Chromium resistance wire is evenly wound around the heating
surface to produce uniform heat distribution. Band heaters are approximately 1/8
inch (3 mm) thick and available in sizes as small as 3-1/2 inches (89 mm) diameter
x 1 inch (25 mm) wide, up to 12 inches (305 mm) diameter x 2 inches (51 mm) wide.
For diameters between 1 inch (25 mm) to 3 inches (76 mm), BriskHeat offers a line of
Nozzle Heaters with similar features and benefits.
Products
Industries
Band Heaters
Nozzle Heaters
Custom Cloth Insulators
SDX, SDC, and TB4000 Controllers
General Manufacturing
Types of Users
Lab Managers
Process Engineers
Manufacturing Engineers
Scientists
Chemists
Toll Free: 800-848-7673 | Phone: 614-294-3376 | BriskHeat.com | Email: [email protected] | Fax: 614-294-3807
© BriskHeat Corporation. All Rights Reserved. 20-01
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