Technologies Archives - Page 29 of 37 - induction heating machine manufacturer

Induction Soldering Stainless Steel Tubing

Induction Soldering Stainless Steel Tubing with IGBT Soldering Heating Units

Objective Heat a.125” (3.175mm) diameter stainless steel tube to a 1” diameter cylinder 1” (25.4mm) tall for a soldering application
Material Stainless steel cylinder and tube
Temperature indicating paint
Lead free solder preform rings
Temperature 300-400 ºF (150-205 ºC)
Frequency 235 kHz
Equipment DW-UHF-4.5 kW, 150-400 kHz induction power supply, equipped with a remote heat station containing two 0.66 μF capacitors (total 1.32 μF).
A three-turn pancake coil induction heating coil designed and developed specifically for this application.
Process Initial tests without solder ensured that the metal reaches the required temperature and the heating pattern on the part.Solder preform rings are placed onto the tube at the joint. The part is placed inside the induction-heating coil heated until the solder melts.
Results/Benefits Programmable and adjustable heating ramp rates achieve the desired heat profile. Too fast a heat profile does not conduct the heat through the joint and too slow a heat cycle vaporizes
or dries the flux causing poor solder flow.

Induction Soldering Steel Parts

Induction Soldering Steel Parts,Wire,Tube,Pipe and Rod with IGBT Induction Heater

Objective To heat a special steel housing to 500(260) ºF(ºC) for a soldering application
Material Steel housing Solder wire and flux
Temperature 500(260) – 550(287.8) ºF(ºC)
Frequency 200 kHz
Equipment DW-UHF-6kW, 150-400 kHz solid state induction power supply with a remote heat station containing two 0.33 mF capacitors (total capacitance 0.66 mF). A custom-designed induction heating coil.
Process A two-turn induction coil is used to deliver the heat energy into the steel housing. A small diameter solder wire is used to form a solder ring for the assembly process. Solder flux is applied
generously to the joint area. Induction power is applied to the assembly until the solder ring flows into the joint. The same coil is used to solder multiple locations on the housing.
Results/Benefits · Ability to solder multiple locations with one coil. No need to change coils.

Induction Soldering Brass Tube-Pipe

Induction Soldering Brass Tube-Pipe-Tubing With RF Soldering Heating System

Objective: Soldering two brass tubes measuring 3/4″ and 1/4″ together for use as cellular phone antennas. The lengths of tubes range from four (4) feet to twelve (12) feet, and must be soldered along the axial side. The joint is to be made using 60/40 Tin Lead Solder and Kestor Rosin paste flux.
Material: Brass Tubes measuring 3/4″ and 1/4″ 60/40 Tin Lead Solder
Kestor Rosin Flux
Temperature: 3750F
Application: Through the use of the the DW-UHF-40KW output solid state induction power supply along with a unique five (5) turn 12″ long channel coil, the following results were achieved:
3750 F was reached and the solder flowed after a heating period of 35 seconds.
A production rate of 24″ per minute was determined to be adequate.
A quality solder fillet was observed after heating and cooling
Equipment: DW-UHF-40kW output solid state induction power supply including one (1) remote heat station containing two (2) capacitors, and a unique five (5) turn channel coil made from 3/16″ copper tubing and measuring 1 1/4″ by 12″.
Frequency: 385 kHz

Induction Soldering Copper Tube

Induction Soldering Copper Tube With High Frequency Heating Units

Objective: To heat a section of 3/8″ copper tubing along with a 900 elbow for soldering. The copper tubing is to be used in Ice Machine Evaporator Assemblies, and soldering takes place after the tubes have been placed within the assembly. Heating must take place in a channel type coil to provide easy access, once the tubing has been installed. Solder can be manually fed after temperature
has been reached.
Material: 3/8″ Thin Walled Copper Tubing and 900 Elbow
Temperature: 6000F
Application: Through the use of the DW-UHF-20kW output solid state induction power supply and a unique three (3) turn channel coil, the following results were achieved:
6000F was reached in 10 seconds.
A quality solder joint was observed with adequate flow and surface texture.
Equipment: DW-UHF-20kW output solid state induction power supply including one (1) remote heat station containing one (1) 1.2 μF capacitor, and a unique three (3) turn channel coil.
Frequency: 200 kHz

Induction Soldering Brass Assembly

Induction Soldering Brass Assembly With High Frequency Soldering Units

Objective: To heat a brass bellows and end cap assembly to 4500F for soldering within 20 seconds. Presently, a soldering iron is used to produce the joint between the bellows and cap. The customer requests a quality solder joint with minimal heating of the bellows to prevent annealing and performance losses. Solder preforms, in the form of flat washers, are to be used to complete this application.
Material: Brass Bellows measuring 2″ in diameter Solder Preforms
Cadmium Free Flux
Temperature: 4500F
Application: The DW-UHF-20kW output solid state induction power supply along with a unique three (3) turn double wound helical coil was utilized to achieve the following results:
4500F was reached and solder flow completed in 6.3 seconds.
A quality repeatable solder joint was observed.
Equipment: DW-UHF-20kW output solid state induction power supply including one (1) remote heat station containing one (1) 1.2 μF capacitor, and a unique three (3) turn double wound helical coil with an inside diameter of 0.4″.
Frequency: 307 kHz

Induction Soldering Brass Rings

Induction Soldering Brass Rings With High Frequency IGBT Induction Heater

Objective: To heat 1 3/4″, 3″ and 6″ diameter brass slip rings and a sheathed copper wire assembly to 3600 F for soldering within three (3) to six (6) seconds. Currently production is accomplished by using a soldering iron and stick feeding rosin cored solder. This process leaves unwanted solder on the side of the slip ring where the soldering iron makes contact. The customer would like to see an increase in joint quality without sacrificing time.
Material: 303 Brass Slip Rings of 1 3/4″, 3″ and 6″ diameters. Sheathed Copper Wire Assembly.
Resin Core Solder, 37% Pb, 63% Sn.
Temperature: 3750F
Application: Through laboratory testing, the DW-UHF-20kW output solid state induction power supply along with a unique four (4) turn “ear muff” type coil produced the following results:
Times to reach 3750 F are as listed below:
– 1 3/4″ in 3 seconds
– 3″ in 3-4 seconds
– 6″ in 5 seconds
Adequate solder flow was observed producing a clean joint.
Solder preforms are recommended to speed up production.
Side loading was facilitated by the unique four (4) turn “ear muff” style coil.
Equipment: DW-UHF-20kW output solid state induction power supply including one (1) remote heat station containing one (1) 1.0 μFcapacitor, a 4-20mA input for fast ramp simulation, and a unique four (4) turn “ear muff” style coil.
Frequency: 265 kHz

Soldering Solar Panels With Induction

Soldering Solar Panels With Induction Heating Units

Objective Heat multiple joints on solar flex circuit strips to 500°F (260ºC) within ten seconds for a soldering application.
Material Flexible solar panel, Solder Plus Paste 63NC-A, 0.0625” (1.59mm) thick Teflon sheets
Temperature 500 °F(260ºC)
Frequency 278 kHz
Equipment • DW-UHF-4.5kW induction heating system equipped with a remote workhead with one 1.2 μF capacitor
• An induction heating coil designed and developed specifically for this application.
Process A specially-designed induction coil is used to provide even heat in the area where the wires on the solar circuits overlap. A very light coat of solder paste is applied to the circuit connections and a small amount of pressure is applied to the Teflon sheets to hold the circuits together. Power is applied for 10 seconds to flow the solder paste and bond the wires to the flex circuits
Results/Benefits Induction heating provides:
• Consistent and repeatable results
• Non-contact clean heating
• Flameless process

Soldering Fiber Optic for Hermetic Sealing

Soldering Fiber Optic Cable for Hermetic Sealing With IGBT Induction Soldering Heater

Objective To heat a Kovar ferrule and fiber optic cable to 297°F within 10 seconds for a soldering application, to form a hermetic seal
Material Gold-coated cable, Kovar ferrule, solder and flux
Temperature 297 ºF
Frequency 360 kHz
Equipment DW-UHF-4.5kW power supply with a specially designed induction coil
Process A specially designed, 4-turn “C” shape coil was used to provide uniform heat to the assembly near the joint area. With this design, the coil can be lowered directly onto the joint; it is not necessary to feed the ferrule assembly through the coil. Flux was applied to the assembly where the ferrule and fiber optic cable were to be joined. RF power was applied for 10 seconds, which caused the solder to melt and flow.
Results/Benefits Consistent and repeatable results were achieved with the DW-UHF-4.5kW power supply and a 10-second heat cycle. The solder flowed evenly and bonded the fiber optic cable to
the Kovar ferrule. With the induction coil’s compact design, a very small surface area was heated with pinpoint accuracy.

induction soldering fiber optic cable

Induction soldering fiber optic cable with high frequency induction heating units

Objective To heat a gold-plated ferrule and fiber optic cable to 475°F within 8 seconds for a soldering application
Material Gold-plated ferrule tube, fiber optic cable, solder preform
Temperature 475 ºF
Frequency 270 kHz
Equipment DW-UHF-4.5kW power supply with a specially designed induction coil.
Process A specially designed, two-turn plate concentrator coil was used to provide uniform heat to the fiber optic assembly. The assembly was placed in a specially designed fixture, then placed inside the induction coil. RF power was applied until the solder flowed and created a solid joint.
Results Consistent and repeatable results were achieved using the DW-UHF-4.5kW power supply and induction coil with a 5 to 7 second heat cycle, depending on the type of solder used (see solder chart below).

Induction Soldering Electrical Circuits

Induction Soldering Electrical Circuits Board With High Frequency IGBT Soldering Heater

Objective To heat multiple joints on flex circuit strips to 180-200°F within seven seconds for a soldering application.
Material Copper bonded to polyester flex circuit strips, Solder Plus Paste 63NC-A, 0.0625” thick Teflon sheets
Temperature 183°F
Frequency 278 kHz
Equipment DW-UHF-4.5kW power supply, remote heat station with one 1.2 μF capacitor and a specially designed induction coil.
Process A specially designed induction coil was used to provide even heat in the area where the fingers of the flex circuits overlap. Initial tests were done to establish a heating pattern and determine time-to-temperature. After a very light coat of the solder paste was applied to the circuit connections, a small
amount of pressure was applied to the Teflon sheets to hold the circuits together. RF power was then applied for 6.5 seconds to flow the solder paste and bond the flex circuits
Results Consistent and repeatable results were achieved using the DW-UHF-4.5kW power supply in 6.5 seconds at 183°F.