Brazing Stainless Steel To Copper With Induction Ā Heater
Objective Braze a stainless steel braided hose to copper elbows for aĀ braided hose assembly.
Material Stainless steel braided hose 3/8ā (9.5mm) OD, copper elbowĀ 1/4ā (6.3mm) OD, braze preform rings and black flux
Temperature 1400 ĀŗF (760 ĀŗC)
Frequency 300Ā kHz
Equipment ā¢ DW-UHF-6kW-III induction heating system, equipped with aĀ remote workhead containing two 0.33Ī¼F capacitors for aĀ total of 0.66Ī¼F
ā¢ An induction heating coil designed and developedĀ specifically for this application.
Process: A two turn helical coil is used to heat the braided hoseĀ assembly. Braze rings are placed at the joint on the copperĀ elbow and flux is applied to the entire surface of the assembly.
The assembly is placed in the heating coil and the braze flowsĀ within 30-45 seconds. This creates a liquid and gas tight brazeĀ between the copper and stainless steel braided hose.
Results/Benefits Induction heating provides:
ā¢ Liquid and gas-tight braze
ā¢ Energy efficient heat in a minimal amount of time
ā¢ Controllable braze flow through the use of braze rings
ā¢ Even distribution of heating