high frequency brazing - induction heating machine manufacturer

induction brazing carbide tip onto steel head teeth

high frequency induction brazing carbide tip onto steel head teeth process Objective In this application test, induction brazing carbide tip onto steel working head teeth. Induction Brazing Equipment DW-UHF-10kw induction brazing machine Customized induction heating coil Materials • Steel working head teeth • Brazing paste Key Parameters Power: 4.5 kW Time: 6 seconds Induction Brazing Process: … Read more

induction brazing and soldering technology

HLQ Induction heating systems are value added systems that can fit directly into the manufacturing cell, reducing scrap, waste, and without the need for torches. The systems can be configured for manual control, semi-automated, and all the way up to fully automated systems. HLQ induction brazing and soldering systems repeatedly provide clean, leak-free joints for … Read more

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 … Read more

Induction Brazing Copper T Pipe With Induction Heating Machine

Induction Brazing Copper T Pipe With Induction Heating Machine Objective Evaluate replacing of flame copper t pipe brazing with induction brazing. Equipment DW-HF-25kw high frequency induction heating machine Materials • Copper main tube – 1.13” (28.7 0mm) OD 1.01” (25.65 mm) ID • Riser tube copper – 0.84” (21.33 0mm) OD, 0.76” (19.30 0mm) ID … Read more

High frequency induction brazing steel tube to steel fitting

High frequency induction steel tube to steel

High frequency induction brazing steel tube to steel fitting Objective Handheld high frequency induction brazing of a steel tube to a steel fitting Recommended Equipment The recommended equipment for this application is the DW-UHF-6KW-III handheld induction brazing heater heat station. Materials: Steel tube to steel fitting braze using Lucas-Milhaupt Easy FLO 3 brazing alloy rings and … Read more

Brazing copper tube to brass fitting

High frequency Induction brazing copper tube to brass fitting process Objective Induction brazing copper to brass fitting using brazing alloy and flux within 60 seconds. Equipment 1.DW-UHF-6KW-III handheld induction heater 2 turn helical coil Materials • Brass fitting • Copper tubing • Silver brazing alloy (pre-formed) • Flux Key Parameters Temperature: Approximately 1350 °F (732°C) … Read more

Induction Brazing Machine

Induction Brazing Machine&Soldering Equipment

Main characteristics:

1. IGBT module and inverting technologies of the first generation been used.

2. Simple structure and light weight and easy for maintenance.

3. Simple to operat ,afew minutes is enough to learn it.

4. Simple to install,installation can be done by unprofessional person very easily.

5. advantages of the model with timer,the power and the operatingtime of the heating period and the rain period can be preset repectively,to realize a simple heating curve,this model is suggested to use for batch production to improve the repeatability.

6. The separated models are designed to fit the dirty surrounding of some cases.

Specifications：

Series	Model		Input power Max	Input current Max	Oscillate frequency	Input Voltage	Duty cycle
M . F .	DW-MF-15 Induction Generator		15KW	23A	1K-20KHZ According to the application	3*380V 380V±20%	100%
	DW-MF-25 Induction Generator		25KW	36A
	DW-MF-35Induction Generator		35KW	51A
	DW-MF-45 Induction Generator		45KW	68A
	DW-MF-70 Induction Generator		70KW	105A
	DW-MF-90 Induction Generator		90KW	135A
	DW-MF-110 Induction Generator		110KW	170A
	DW-MF-160 Induction Generator		160KW	240A
	DW-MF-45 Induction Heating Rod Forging Furnace		45KW	68A	1K-20KHZ	3*380V 380V±20%	100%
	DW-MF-70 Induction Heating Rod Forging Furnace		70KW	105A
	DW-MF-90 Induction Heating Rod Forging Furnace		90KW	135A
	DW-MF-110 Induction Heating Rod Forging Furnace		110KW	170A
	DW-MF-160 Induction Heating Rod Forging Furnace		160KW	240A
	DW-MF-15 Induction Melting Furnace		15KW	23A	1K-20KHZ	3*380V 380V±20%	100%
	DW-MF-25 Induction Melting Furnace		25KW	36A
	DW-MF-35 Induction Melting Furnace		35KW	51A
	DW-MF-45 Induction Melting Furnace		45KW	68A
	DW-MF-70 Induction Melting Furnace		70KW	105A
	DW-MF-90 Induction Melting Furnace		90KW	135A
	DW-MF-110 Induction Melting Furnace		110KW	170A
	DW-MF-160 Induction Melting Furnace		160KW	240A
	DW-MF-110 Induction Hardening Equipment		110KW	170A	1K-8KHZ	3*380V 380V±20%	100%
	DW-MF-160Induction Hardening Equipment		160KW	240A
H . F .	DW-HF-04 Series	DW-HF-4KW-A	4KVA	15A	100-250KHZ	Single phase 220V	80%
	DW-HF-15 Series	DW-HF-15KW-A DW-HF-15KW-B	15KVA	32A	30-100KHZ	Single phase 220V	80%
	DW-HF-25 Series	DW-HF-25KW-A DW-HF-25KW-B	25KVA	23A	20-80KHZ	3*380V 380V±10%	100%
	DW-HF-35 Series	DW-HF-35KW-B	35KVA	51A
	DW-HF-45 Series	DW-HF-45KW-B	45KVA	68A
	DW-HF-60 Series	DW-HF-60KW-B	60KVA	105A
	DW-HF-80 Series	DW-HF-80KW-B	80KVA	130A
	DW-HF-90 Series	DW-HF-90KW-B	90KVA	160A
	DW-HF-120 Series	DW-HF-120KW-B	120KVA	200A
U . H . F .	DW-UHF-3.2KW		3.2KW	13A	1.1-2.0MHZ	Single phase220V ±10%	100%
	DW-UHF-4.5KW		4.5KW	20A
	DW-UHF-045T		4.5KW	20A
	DW-UHF-045L		4.5KW	20A
	DW-UHF-6.0KW		6.0KW	28A
	DW-UHF-06A		6.0KW	28A
	DW-UHF-6KW-B		6.0KW	28A
	DW-UHF-10KW		10KW	15A	100-500KHZ	3*380V 380V±10%	100%
	DW-UHF-20KW		20KW	30A	50-250KHZ
	DW-UHF-30KW		30KW	45A	50-200KHZ
	DW-UHF-40KW		40KW	60A	50-200KHZ
	DW-UHF-60KW		60KW	90A	50-150KHZ

Induction Brazing Basics

Induction Brazing Basics for jointing copper,silver,brazing,steel and stainless steel,etc.

Induction Brazing uses heat and filler metal to join metals. Once melted, the filler flows between close-fitting base metals (the pieces being joined) by capillary action. The molten filler interacts with a thin layer of the base metal to form a strong, leak-proof joint. Different heat sources can be used for brazing: induction and resistance heaters, ovens, furnaces, torches, etc. There are three common brazing methods: capillary, notch and moulding. Induction brazing is concerned solely with the first of these. Having the correct gap between the base metals is crucial. A too-large gap can minimize the capillary force and lead to weak joints and porosity. Thermal expansion means gaps have to be calculated for metals at brazing, not room, temperatures. Optimum spacing is typically 0.05 mm – 0.1 mm. Before you braze Brazing is hassle-free. But some questions should be investigated — and answered — in order to assure successful, cost-effective joining. For instance: How suitable are the base metals for brazing; what’s the best coil design for specific time and quality demands; should the brazing be manual or automatic?

At DAWEI Induction we answer these and other key points before suggesting a brazing solution. Focus on flux Base metals must usually be coated with a solvent known as flux before they are brazed. Flux cleans the base metals, prevents new oxidation, and wets the brazing area prior to brazing. It is crucial to apply sufficient flux; too little and the flux may become
saturated with oxides and lose its ability to protect the base metals. Flux is not always needed. Phosphorous-bearing filler
can be used to braze copper alloys, brass and bronze. Flux-free brazing is also possible with active atmospheres and vacuums, but the brazing must then be performed in a controlled atmosphere chamber. Flux must normally be removed from the part once the metal filler has solidified. Different removal methods are used, the most common being water quenching, pickling and wire brushing.

Brazing Brass To Copper With Induction

Brazing Brass To Copper With Induction

Objective: To braze brass end-connectors to copper tubes used in aircraft assembly air lines Material brass end connectors, copper tubes of different diameters

Temperature 1400 ºF 750°C

Frequency 350 kHz

Equipment DW-UHF-4.5KW induction heating system, including a three turn helical induction coil using two 0.33μF capacitors (total 0.66μF)

Process For smaller diameter parts, flux is applied to the entire part and the copper tube to brass joint is assembled using brazing preforms (allowing for the same amount of braze in each joint). The assembly is placed in the coil and heated for 20-30 seconds reaching a temperature of 1400°F. For larger copper tube assemblies, the same process is used, but the braze alloy is stick-fed to the joint to prevent the alloy from flowing out of the joint. A foot switch control is recommended to enable better control of the process.

Results/Benefits

Economy: Power is consumed during the heating only

Consistency: the results of braze joints are repeatable and uniform

High Frequency Induction Brazing Diamond Inserts

High Frequency Induction Brazing Diamond Inserts

Objective: Induction Brazing diamond inserts to a steel drilling ring

Material : • steel ring and diamond inserts • Braze shim preform • Flux

Temperature :1300 – 1350 (700 – 730) °F (°C)

Frequency :78 kHz

Equipment: DW-HF-15kW, induction heating system, equipped with a remote heat station containing two 0.5 μF capacitors (total 0.25 μF) An induction heating coil designed and developed specifically for this application.

Process: A multi-turn, internal-external helical coil (A) is used to generate the required heating pattern. Initial tests on the ring alone determine system tuning. Flux is applied to the part and the braze shims are inserted into the counter-bored holes (B). This is followed by the synthetic diamonds. The part is loaded into the coil and weight is placed onto the diamonds (C). RF Induction Heating power is applied until the braze flows. The power is turned off and the part air cools to room temperature.

Results/Benefits • reduced ring warping compared to furnace induction heating • decreased cycle time due to reduced ramp-up and cooldown times