Brazing copper tube to brass fitting

Brazing copper tube to brass fitting https://dw-inductionheater.com/brazing-copper-tube-to-brass-fitting.html?feed_id=272794&_unique_id=67d6e793b2d58

Induction Brazing Copper Tube of Heat Exchanger

Induction Brazing Copper Tube of Heat Exchanger https://dw-inductionheater.com/induction-brazing-copper-tube-of-heat-exchanger.html?feed_id=270822&_unique_id=67be28da7d6f7

Induction Brazing Copper Tube For Refrigeration

Induction Brazing Copper Tube For Refrigeration https://dw-inductionheater.com/induction-brazing-copper-tube-for-refrigeration.html?feed_id=270358&_unique_id=67b839f53075d

Induction Handheld Brazing Copper To Steel Tube

Induction Handheld Brazing Copper To Steel Tube https://dw-inductionheater.com/induction-handheld-brazing-copper-to-steel-tube.html?feed_id=270097&_unique_id=67b542963dcc2

induction brazing copper and brass rods

induction brazing copper and brass rods https://dw-inductionheater.com/induction-brazing-copper-and-brass-rods.html?feed_id=270010&_unique_id=67b4458c8dc61

Brazing Copper Tubing with Induction

Brazing Copper Tubing with Induction https://dw-inductionheater.com/product/brazing-copper-tubing-with-induction?feed_id=269314&_unique_id=67ab120973c92

Induction Brazing copper to copper pipes

Induction Brazing copper to copper pipes https://dw-inductionheater.com/induction-brazing-copper-to-copper-pipes.html?feed_id=268096&_unique_id=679a9050d61c9

Induction Brazing Copper to Stainless Steel Process

Induction Brazing Copper to Stainless Steel Process https://dw-inductionheater.com/high-frequency-induction-brazing-copper-to-stainless-steel-process.html?feed_id=267951&_unique_id=6798963684669

Induction Brazing Copper To Copper Parts

Induction Brazing Copper To Copper Parts https://dw-inductionheater.com/induction-brazing-copper-to-copper-parts.html?feed_id=267371&_unique_id=6790ad14138c7

induction Brazing copper rods to brass strips

induction Brazing copper rods to brass strips https://dw-inductionheater.com/induction-brazing-copper-rods-to-brass-strips.html?feed_id=267023&_unique_id=678bbb8201bea

Induction Brazing Copper Tube

Induction Brazing Copper Tube https://dw-inductionheater.com/product/induction-brazing-copper-tube?feed_id=261948&_unique_id=6746dff1a34f0

Induction Brazing Copper Billets

Induction Brazing Copper Billets https://dw-inductionheater.com/product/induction-brazing-copper-billets?feed_id=261803&_unique_id=6744e5b0417f8

induction Brazing copper rods to brass strips

Objective

Induction Brazing copper rods to brass strips to replace torch operation. The current torch process results in excessive contaminants on the assembly, and requires extensive rework after the induction brazing operation.

Equipment

DW-UHF-10KW INDUCTION BRAZING MACHINE



Two turn open end conveyor coil

Materials

• Copper coupon plate and copper rod

• Braze wire – EZ Flo 45

• Braze alloy – 45% Silver, 1/32 DIA

Key Parameters – TEST 1

Power: 7.2 kW

Temperature: Approximately 1350° F (732° C)

Time: Average time – 100 seconds

Process and Results:

For Induction brazing copper plate to copper rod,, EZ Flo 45 braze wire was cut into 2” lengths and placed in the interface area. In a production situation, EZ Flo 45 brazing paste is recommended. The assemblies were set up and heated for an average time of 100 seconds to flow the alloy and achieve the braze.

Key Parameters – TEST 1

Power: 6 kW

Temperature: Approximately 1350° F (732° C)

Time: Average time – 2.5 minutes

Process and Results:

For Induction brazing copper rod to brass plate,, EZ Flo 45 braze wire was cut into 2” lengths and placed in the interface area. In a production situation, EZ Flo 45 brazing paste is recommended. The assemblies were set up (see photographs) and heated for an average time of 2.5 minutes to flow the alloy and achieve the braze.

Due to the metal resistance differential between copper and brass, the brass bar heat preferentially. The induction heating coil designed to braze the bars to the plate section heats the rods and the heat is transferred to the plate more by conduction than induction causing the bars to initially reach temperature prior to the plate. If the materials are the same (cooper to copper or brass to brass, this is not a problem. If the bar is copper and the plate is brass there are not issues – only when the bar is brass and the plate is copper. This requires the power to be reduced to allow tie for heat transfer from the brass rod to the copper plate.

Key Parameters – TEST 1

Power: 7.2 kW

Temperature: Approximately 1350° F (732° C)

Time: Average time – 2 minutes

Process and Results:

For Induction braze copper coupon plate and copper rod,, EZ Flo 45 braze wire was cut into 2” lengths and placed in the interface area. In a production situation, EZ Flo 45 brazing paste is recommended.

The assemblies were set up  and heated for an average time of 2 minutes to flow the alloy and achieve the braze.

Results/Benefits:

• induction brazing Strong durable joints


• Selective and precise heat zone, resulting in less part distortion and joint stress than welding


• Less oxidation


• Faster heating cycles


• More consistent results and suitability for large volume production, without the need for batch processing


• Safer than flame brazing

https://dw-inductionheater.com/wp-content/uploads/2020/05/induction-Brazing-copper-rods-to-brass-strips-1.png?v=1590226201
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Induction Brazing Copper To Copper Parts

Objective

Induction Brazing Copper to Copper parts Spacer. The workpieces were heated to 2012˚F (1100˚C) in 1 minutes.

Recommended Equipment

The recommended equipment for this application is the  DW-HF-45kw induction heating machine

Materials:

• Copper section: 0.55” thick x 1.97” long x 1.18” wide x 0.2” long (14 mm thick & 50 mm long x 30 mm wide x 5 mm long)


• Copper spacer: 0.55” thick x 1.57” long x 0.79” wide x 0.08” long (14 mm thick & 40 mm long x 20 mm wide x 2 mm long)


• Brazing alloy: 5% silver brazing rod

Power: induction heating power supplies up to 30 kW

Temperature: 2012˚F (1100˚C)

Time: 1 minutes

https://dw-inductionheater.com/wp-content/uploads/2020/05/High-frequency-Induction-Brazing-Copper-To-Copper-Parts.png?v=1588728728
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Induction Brazing Copper to Stainless Steel Process

High Frequency Induction Brazing Copper to Stainless Steel Process Technology

Objective

The objective of this induction brazing copper to stainless steel using a DW-UHF-40kw induction heating power supply with a custom heating station

Equipment

DW-UHF-40KW Induction Heating Power Supply

HLQ custom coil

Key Parameters

Power: 23.65 kW

Temperature: Approximately 1300°F (704)°C

Time: 3.5 mins

Materials

Cooper

4.5″ OD

0.5″ Wall Thickness

Stainless Steel  4″ OD

Braze Joint 2″

Process:

In order to start the induction brazing of copper to stainless steel the part was centered on a turntable. The induction brazing coil was then positioned around the copper because it is less efficiently heated than stainless steel. As the part was rotating, approximately 25kW were being applied to the coil. Once the brazed joint was close to the ideal brazing temperature, the alloy was hand fed onto the joint. The induction brazing of cooper to stainless steel was completed and successful.

Results/Benefits:

The result of the induction brazing copper to stainless steel application testing was a positive one, the induction brazing was completed and the copper to stainless steel was done seamlessly. This test resulted in high quality and repeatability of the brazed joints, increased productivity and control of the time and temperature.

 

https://dw-inductionheater.com/wp-content/uploads/2020/04/induction-brazing-copper-to-stainless-steel.jpg?v=1587209214
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Induction Brazing Copper to Stainless Steel Process

High Frequency Induction Brazing Copper to Stainless Steel Process Technology

Objective

The objective of this induction brazing copper to stainless steel using a DW-UHF-40kw induction heating power supply with a custom heating station

Equipment

DW-UHF-40KW Induction Heating Power Supply

HLQ custom coil

Key Parameters

Power: 23.65 kW

Temperature: Approximately 1300°F (704)°C

Time: 3.5 mins

Materials

Cooper

4.5″ OD

0.5″ Wall Thickness

Stainless Steel  4″ OD

Braze Joint 2″

Process:

In order to start the induction brazing of copper to stainless steel the part was centered on a turntable. The induction brazing coil was then positioned around the copper because it is less efficiently heated than stainless steel. As the part was rotating, approximately 25kW were being applied to the coil. Once the brazed joint was close to the ideal brazing temperature, the alloy was hand fed onto the joint. The induction brazing of cooper to stainless steel was completed and successful.

Results/Benefits:

The result of the induction brazing copper to stainless steel application testing was a positive one, the induction brazing was completed and the copper to stainless steel was done seamlessly. This test resulted in high quality and repeatability of the brazed joints, increased productivity and control of the time and temperature.

 

https://dw-inductionheater.com/wp-content/uploads/2020/04/induction-brazing-copper-to-stainless-steel.jpg?v=1587209214
https://dw-inductionheater.com/induction-brazing-copper-to-stainless-steel-process.html
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Induction Brazing copper to copper pipes

High Frequency Induction Brazing copper to copper pipes Process

Objective: Induction Brazing copper to copper pipes

Equipment: DW-UHF-6KW-III handheld induction brazing heater

Materials:  Six Copper pipes (9.5 mm)

Power: 6 kW

Temperature: 1475 °F/ 800°C

Time: 20 seconds

Process:

The DW-UHF-6KW-III handheld induction brazing system with robot can automatically induction braze multiple joints located in predefined positions. For this brazing application a wire feeder was mounted to the DW-UHF-6KW-III induction brazing heater, which feds the alloy onto the copper joints. A nitrogen nozzle was also added to reduce oxidization of the joints, this helps minimize the brazed joints cleaning procedure. The robotic system is programmed to move to each joint and apply power for a pre-programmed amount of time. This ensures a repeatable and reliable brazing process. The induction brazing of copper to copper was performed successfully within 20 seconds per joint at 1475 °F.

The DW-UHF-6KW-III handheld induction brazing heater is ideal for flameless brazing of refrigerator compressors, heat exchangers, home appliance components and complex HVAC assemblies.

https://dw-inductionheater.com/wp-content/uploads/2020/04/Induction-Brazing-of-copper-to-copper-pipes-2.png?v=1586935463
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