induction brazing stainless steel to copper

Objective Induction Brazing stainless steel to copper tubing. Objective is to evaluate induction brazing solution. Customer is looking to reduce defects and for a cleaner brazing environment. Due to different pipe size and lower volume – evaluation is performed with a induction brazing system. Test1 Equipment DW-HF-25kw induction brazing machine Materials Copper to Stainless steel … Read more

induction brazing stainless steel tubing process

induction heating theory

Induction Brazing stainless steel tubing and stainless steel fittings Technology Objective Induction Brazing stainless steel tubing and stainless steel fittings Equipment DW-UHF-20kw induction brazing machine Materials 1.75″ (44.45mm) Hexagon fitting Power: 10.52 kW Temperature: 1300°F (704°C) Time: 30 seconds Results and Conclusions: Induction heating pinpoints the heat to the desired area of the part Improved process control for … Read more

induction brazing stainless steel to steel

High frequency magnetic induction brazing stainless steel to steel process HLQ team was provided with 2 different parts to be brazed in our test laboratory. Objective: Induction Brazing of a 0.15’’/ 3.81mm stainless steel pin to a steel base. Equipment:  DW-UHF-6KW-III handheld induction brazing system  Industry: Appliances & HVAC Materials: Steel hexagon (base 1’’/ 25.4 mm diameter; 0.1’’/ … Read more

High Frequency Brazing Stainless Steel Fittings

High Frequency Brazing Stainless Steel Fittings Objective High Frequency Brazing stainless steel fittings to corogated (SS) hoses. The hoses are with sizes ID 1.575in (40mm) and ID 2.99in (76 mm).  The customer has never used induction heating before and is not familiar with the induction process. The goal of this test is to prove the strength of … Read more

Handheld Brazing Stainless Steel Tube

Handheld Brazing Stainless Steel Tube With Handheld Induction Heater Objective Induction Braze stainless steel tubes to copper tubes with handheld induction brazing heater. Objective is to evaluate induction brazing solution. Customer is looking to reduce defects and for a cleaner brazing environment. Due to different pipe size and lower volume – evaluation is performed with … Read more

Brazing stainless steel with induction

High frequency induction brazing stainless steel tube to stainless steel fitting with DW-HF-25kw-A induction heater.

Objective

Brazing stainless steel tubing and stainless steel fittings

Equipment

DW-HF-25kw-A induction brazing machine

Materials
1.75″(44.45mm) Hexagon fitting

Power: 10.52 kW
Temperature: 1300°F (704°C)
Time: 30 seconds

Results and Conclusions:

  • Induction heating pinpoints the heat to the desired area of the part
  • Improved process control for precise heating to a desired temperature
  • Power on demand and rapid, consistent heat cycles
  • Technology without pollution, which is both clean and safe

Induction Brazing Carbide To Stainless Steel

Induction Brazing Carbide To Stainless Steel Shaft With IGBT Heating Units

Objective Brazing a cone shaped carbide to a stainless steel shaft for a digger
Material Cone shaped carbide 1.12” (28.4mm) dia, 1.5”(38.1mm) tall, stainless steel shaft 1.12” (28.4mm) dia and various length, black brazing flux and braze shims
Temperature 1500 ºF (815 ºC)
Frequency 277 kHz
Equipment • DW-UHF-10 kW induction heating system, equipped with a remote workhead containing two 1.0μF capacitors for a total of 0.5μF
• An induction heating coil designed and developed specifically for this application.
Process A three turn helical coil is used to braze the carbide to the shaft. The steel shaft is fluxed and the braze shim placed on top. The carbide tip is fluxed and placed on top of the shim, lining up the countersunk hole in the carbide. The hole is not fluxed because the flux outgases and causes the carbide to build up pressure and attempt to repel from the shaft. Power is applied for 85 seconds for the braze shim to flow and make a good joint.
DAWEI’s customer has a customer who is unhappy with the braze quality of their digger so our customer is looking for a better quality brazing process. DAWEI’s customer is very happy with the sample brazed diggers and the help he received from the Ameritherm lab in developing his brazing process.
Results/Benefits Induction heating provides:
• Rapid localized heating only where needed
• Creates clean, controllable joints
• Hands-free heating that involves no operator skill for manufacturing
• Even distribution of heating

brazing carbide to shaft

 

 

 

 

 

 

induction brazing carbide to shaft

 

 

 

 

 

 

 

brazing carbide to stainless steel shaft

Brazing Stainless Steel To Copper With Induction

Brazing Stainless Steel To Copper With Induction  Heater

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

Induction Brazing Stainless Steel

Induction Brazing Stainless Steel Car grill 

Objective Braze an end plug on a stainless steel car grill before powder coating application
Material Stainless steel car grill 0.5” x 0.19” (12.7mm x 4.8mm), end plugs and braze ring
Temperature: 1350 ºF (732°C)
Frequency:400 kHz
Equipment •DW-UHF-6kW-III induction heating system, equipped with a remote workhead containing one 0.66μF capacitor.
• An induction heating coil designed and developed specifically for this application.
Process A three turn square shaped helical coil is used to heat the end of the grill. End plugs are inserted into the grill and the assembly is inserted into the coil for 30 seconds. The braze flows to create a neat and clean leak-proof joint.
Results/Benefits Induction heating provides:
• Rapid localized heat to joint area only
• Minimized oxidation reduces cleaning time
• Hands-free heating that involves no operator skill for manufacturing
• Even distribution of heating

Induction Brazing Stainless Steel

Induction Brazing Stainless Steel

Objective
1st Application: Braze hub assembly to needle holder
2nd Application: Braze Large tube to ring joint
Material: 1st Application: Steel hub assembly and needle 0.1″ dia(2.5mm) 2nd Application: Steel tube 1″ OD (25.4 mm) and ring
Temperature 1400 ºF (760 ºC)
Frequency 325 kHz for brazing the needle 0.1″ dia (2.5mm) 259 kHz for brazing ring to steel tube 1″ OD (25.4 mm)
Equipment • DW-UHF-4.5KW induction heating system, equipped with a
remote workhead containing two .66 μF capacitors for a total of 1.32 μF
• Two induction heating coils, designed and developed specifically for this dual application.

Process 1st application: A two-turn helical coil is used to heat the hub assembly on the needle holder for 10 seconds. The coil concentrates the heat on the hub only, as the needle is magnetic and the hub material is non-magnetic. A small
diameter braze wire is used to supply sufficient amount of braze creating a strong aesthetically pleasing bond. 2nd application: A three-turn helical coil is used for brazing the large tube to the ring joint for 3-5 minutes. A braze ring is
used to supply sufficient amount of braze to create an aesthetically pleasing bond.

Results/Benefits Induction heating provides:
• Even distribution of heating, provides even flow of braze alloy for an aesthetically pleasing bond
• System flexibility allows for the same unit to be used for two different applications which is a cost saving.