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Annealing Heat Treating

Our Annealing Process
Bluewater's process takes place in two unique stages. First is the softening of the metal through the removal of crystal defects and the internal stresses they cause. Second is the nucleation and growth of new, strain-free grains. 

To avoid oxygenation, scaling and decarburization, Bluewater can carry out the annealing process in protective inert atmospheres such as endothermic gas, hydrogen gas, nitrogen gas, argon gas, or vacuum. Components to be annealed are heated in production furnaces and then slow cooled under a controlled environment. Air atmosphere annealing is also a low cost option for raw material and unfinished parts where decarburization and scaling is permitted. 

Bluewater's facility in Houston, TX specializes in air atmosphere annealing of long raw material products such as bars, tubes, plates, and blocks for the oil and gas industry.

Bluewater's facilities in Coldwater, MI and Chicago use continuous mesh belt furnaces for bright annealing of stainless steel products. These furnaces are able to produce brighter parts with more uniform heating and cooling rates at lower prices than vacuum furnaces.

Annealing Properties
  • Reduces hardness, tensile strength and yield strength
  • Allows for easier machining and forming of materials
  • Removes residual stresses present
  • Removes effects of cold-work hardening
  • Recrystallization can eliminate directionality of rolled or forged microstructures and create fine equiaxed grains
  • Homogenization of grain structure to dissipate alloy segregation present in as-cast structures
Annealing Applications
  • Shaping
  • Stamping
  • Forming
  • Hydroforming
  • Bending
  • Machining
  • Castings
  • Forgings
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