Induction Brazing in a Controlled Atmosphere 

Induction Brazing in a Controlled Atmosphere

Why braze in a controlled atmosphere?

Induction brazing in controlled oxygen-free atmospheres under normal or close-to-normal atmospheric pressure is known as atmospheric brazing, allowing for reduced oxidation and improved control over the process.

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Benefits of Induction Brazing in a Controlled Atmosphere 

  • Meets tight production tolerances with precise localized heat to small areas creating pinpoint accuracy

  • Increases production rates with faster heating cycles

  • Reduces defect rates with repeatable, reliable heat

  • Eliminates variability from operator-to-operator, shift-to-shift

  • Maintains metallurgical characteristics of the individual metals

atmospheric brazing benefits

controlled atmosphere brazing Application Notes

Select from our collection of controlled atmosphere brazing notes, taken from years supporting our customers. Read how we helped to solve their process heating challenges.


image: Braze a thin walled tube to a steel cap in a hydrogen atmosphereBraze a thin walled tube to a steel cap in a hydrogen atmosphere

A single turn helical coil is used to heat the quartz tube and the tube assembly. The tube assembly is held in place inside the quartz tube by a copper fixture and hydrogen is fed into the quartz tube...

image: Annealing stainless steel caps for a dental applicationAnnealing stainless steel caps for a dental application

Our client had a requirement to anneal large quantities of work-hardened stainless steel crowns. Induction was suggested for its precise, controllable heating. Since oxidation is unacceptable in the finished dental product, induction heating is the appropriate choice for heating in an inert atmosphere.

image: Crucible Melting a variety of materials in a nitrogen atmosphereCrucible Melting a variety of materials in a nitrogen atmosphere

The crucible is heated using an induction coil with a four turn pancake at the base that extends upward into a three turn helical coil.

image: Braze Copper Tube to Brass FittingBraze Copper Tube to Brass Fitting

To use induction heating to braze a copper tube to a brass fitting using a preform braze wire.

image: Brazing Copper Tube AssembliesBrazing Copper Tube Assemblies

To heat a copper tube assembly in an inert atmosphere to 1450°F within 45 seconds for brazing without flux or acid wash clean-up.

image: Brazing Hydraulic Hose AssembliesBrazing Hydraulic Hose Assemblies

To heat a steel hydraulic hose fitting in an inert atmosphere to 2200°F within 7 seconds for brazing without any carbon buildup.

image: Annealing steel tubes in an inert atmosphere Annealing steel tubes in an inert atmosphere

Induction annealing heats steel tubes to 2000 ºF (1093 ºC) in an inert atmosphere for very small areas within precise production tolerances. A two-turn concentrator coil is used to heat the stainless steel tube. The annealing process takes place in an inert atmosphere to prevent oxidation.

Frequently Asked controlled atmosphere brazing Questions

Frequently Asked controlled atmosphere brazing Questions

Four Ways To Contact Ambrell for Support

AMBRELL CORPORATION

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Rochester, NY 14606
United States
 

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F: +1 585 889 4030

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S: +1 585 889 0200

AMBRELL B.V.

Holtersweg 1
7556 BS Hengelo
The Netherlands
 

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T: +31 880 150 100

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AMBRELL Ltd.

Unit 6, Space Business Centre
Tewkesbury Road
Cheltenham, GLOS, GL51 9FL
United Kingdom

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T: +44 1242 514042

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