annealing furnace

What is an Annealing Furnace

Annealing is a heat treatment technique used to change a metal’s chemical. Physical characteristics to decrease its hardness and increase its ductility. The operation of an annealing furnace involves heating the sample above the temperature of recrystallization and then cooling it after the sample has been kept at this temperature for an appropriate period. The annealing process modifies the ductility and hardness qualities of a sample by causing the atoms inside it to spread within the crystal lattice and reducing the number of dislocations. The sample begins to recrystallize as it cools.

Annealing Furnace

An annealing furnace is frequently utilized to create a more uniform, homogenous internal structure and to relieve internal tensions. Annealing is a heat treatment that modifies a material’s physical and occasionally chemical characteristics to make it more ductile and less hard, improving its workability. It entails raising a material’s temperature over its recrystallization point, holding it there for the right length of time, and then cooling it down.

Phases of Annealing 

Recovery, recrystallization, and grain gain are the three phases of the annealing process that take place when the material’s temperature rises.

  • Recovery: All annealing processes involve a lower temperature period during which recovery takes place before the emergence of fresh grains free of strain. By eliminating internal tensions caused by dislocations, which are essentially linear flaws, the metal is soften as a result. The form and size of the grain remain constant.
  • Recrystallization: When grains that have been distort by internal forces nucleate and grow again. A process known as recrystallization takes place. Grains increase (the third step) if annealing is allow to continue after recrystallization is finish.
  • Grain Growth: Grain growth only happens if annealing is allowed to proceed after recrystallization is complete. Additional heat treatment would be necessary since the material’s microstructure begins to coarsen during grain growth and the material may lose part of its strength.

Feature of Furnace

The processing of copper or stainless steel wire, rod, strand, strip, and tube products is the general purpose of commercial furnace. Copper, copper alloys, nickel, nickel chrome, titanium, stainless steel, and refractory metals are all excellent candidates for these furnaces. Depending on the material being treat and the intend result, different annealing procedures may be use. It offers a large selection of industrial processes that can be use for annealing among other heat treatment procedures. There are custom furnaces to perform any annealing process, including final, full, intermediate, partial, and recrystallization annealing, in a range of time and temperature.


By raising the material’s temperature over the recrystallization point. An annealing furnace makes it more ductile and suitable for further processing. In essence, annealing furnaces and ovens are use to modify the hardness. And strength of a material, release internal tensions, and increase ductility.

The treated material’s mechanical or electrical qualities and machinability are enhance by annealing. Heating hot rolled steel above the temperature of recrystallization also shapes and forms it. Although annealing steel and alloy steel is frequently do. Other metals including copper, brass, and aluminum can also gain from the procedure.

Make use of the Best Equipment

Industrial furnaces from various manufacturers can be use for several heat treatment operations, including annealing. Few suppliers also have provisions for creating custom furnaces that meet precise criteria. And that particular annealing furnaces can be use for a variety of materials. Get in touch with the best service provider in your neighborhood. If you have any questions about the selection of annealing furnaces. Spending quality time in discussion and exploring the commercial furnace. Types would help in avoiding any unexpected breakdowns in the business operations.