Induction Brazing in a Controlled Atmosphere
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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.
Benefits of Induction Brazing in a Controlled Atmosphere
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Meets tight production tolerances with precise localized heat to small areas creating pinpoint accuracy
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Increases production rates with faster heating cycles
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Reduces defect rates with repeatable, reliable heat
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Eliminates variability from operator-to-operator, shift-to-shift
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Maintains metallurgical characteristics of the individual metals
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.
Braze 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...
Annealing 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.
Crucible 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.
Braze Copper Tube to Brass Fitting
To use induction heating to braze a copper tube to a brass fitting using a preform braze wire.
Brazing 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.
Brazing 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.
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.
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What parameters can limit controlled amosphere brazing with induction?
Brazing within an atmosphere is done by using a flux. This flux is not wished for in some applications the product is used for due to its corrosive nature. In addition brazing in atmosphere will result in more cleaning requirements after the joint was created
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Why is atmosphere brazing beneficial in cold atmospheres?
Cold atmospheric brazing is typically considered low temperature joining of two metals at temperatures upto 500 degrees Celsius. This results in faster heat cycles, less power requirement, quicker cooling cycles and less distortion due to the lower temperature input.
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What are the benefits of atmosphere brazing?
Due to the fact that brazing in an atmosphere is less complex than in an inert atmosphere the production rate is greatly increased. In addition less complex investment is required as it does not require specialized equipment to create an inert atmosphere or vacuum. Brazing in atmosphere is more versatile as setup changes are easily conducted in order to produce different parts
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What Parameters can Limit Atmosphere Brazing with Induction?
Brazing within an atmosphere is done by using a flux. This flux is not wished for in some applications the product is used for due to its corrosive nature. In addition brazing in atmosphere will result in more cleaning requirements after the joint was created
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Why is Atmosphere Brazing Beneficial in Cold Atmospheres?
Cold atmospheric brazing is typically considered low temperature joining of two metals at temperatures upto 500 degrees Celsius. This results in faster heat cycles, less power requirement, quicker cooling cycles and less distortion due to the lower temperature input.
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What are the Benefits of Atmosphere Brazing?
Due to the fact that brazing in an atmosphere is less complex than in an inert atmosphere the production rate is greatly increased. In addition less complex investment is required as it does not require specialized equipment to create an inert atmosphere or vacuum. Brazing in atmosphere is more versatile as setup changes are easily conducted in order to produce different parts
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Your induction controlled atmosphere brazing question..
AMBRELL CORPORATION
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Rochester, NY 14606
United States
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AMBRELL B.V.
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7556 BS Hengelo
The Netherlands
AMBRELL Ltd.
Unit 6, Space Business Centre
Tewkesbury Road
Cheltenham, GLOS, GL51 9FL
United Kingdom
F: +31 546 788 154