What Is Induction Heating Coil&Inductor?

What is induction heating coil & inductor? The varying magnetic field required for induction heating is developed in the induction heating coil via the flow of AC (alternating current) in the coil. The coil can be made in many shapes and sizes to custom fit a specific application. The coils can range from tiny coils made of copper tubing used for precise heating of extremely small parts in applications such as soldering and ferrule heating to large coil assemblies of copper tubing used in applications such as strip metal heating and pipe heating. What is the importance of the induction heating coil (inductor)? The induction coil design is one of the most important aspects of an induction heating system. The coil is a custom design to give your work piece or part the proper heating pattern, maximize efficiency of the induction heating power supply’s load matching system, and to accomplish these tasks while still permitting ease of loading and unloading your part.

induction hardening process

High Frequency Induction Hardening  Process

Induction hardening is used in particular for the hardening/quenching of bearing surfaces and shafts as well as intricately shaped parts where only a specific area needs to be heated. Through the choice of the operating frequency of the induction heating system, the resulting depth of penetration is defined. Additionally, it can be decided if the area is to be hardened in the air, with water or with a special hardening emulsion. Depending on the cooling medium, different degrees of hardness are achieved. Induction hardening can be realized as a manual or automated solution. There is also the possibility to harden in a continuous process.

• Suitable for hardening and tempering of various workpieces, such as induction hardening of shafts, gears, guide rails, discs, pins, and other parts;
• It has the functions of continuous hardening, simultaneous hardening, segmented continuous hardening, and segmented simultaneous hardening;
• Use numerical control system or PLC and frequency conversion speed regulation system to realize workpiece positioning and scanning, and connect PLC and induction heating power supply to realize fully automated production.
• Vertical (hardening of shaft parts) + horizontal (hardening of gear ring parts)

Hardening is one of HLQ induction heating power systems's main application areas. Hundreds of our hardening solutions are at work around the world—many of them within the automotive industry. The main benefit of induction heating for hardening is that it takes just a few seconds. In a furnace, the same process can take hours or even days. How is that possible? The answer is that induction is phenomenal at generating heat fast. This, in turn, means you can integrate hardening in the production process. Hardening in a furnace, on the other hand, is more time-consuming (greater heat loss) and requires moving the components either to your own furnace or to that of a subcontractor. In-line integration of hardening reduces your lead times considerably. You get full control over quality, delivery times and costs. There's no need to transport kilos of components back and forward, which saves energy and the environment.And last but not least, you cut down the amount of administration to a minimum. HLQ Induction Heating Power Systems has many years of experience in inductive hardening and tempering of diverse workpieces. At the heart of each Hardening system is HLQ Induction Heating Power Systems Induction Heat Power Source, the industry's most advanced induction frequency converter. These acclaimed converters help ensure optimum hardening results—day in day out, year after year The induction hardening machine includes Vertical Scanning , Horizontal (centerless) Scanning and customized machines—and serial and/or parallel compensated induction power sources with a wide range of output power and frequencies.

• This series hardening machine tool uses numberic control technology, has continuous, simultaneous, sectionally-continuous and sectionally-silultaneous quenching functions, it is mainly used for induction quenching of shafts, discs, pins and gears, and featured by high quenching precision. hardening machine tool used by connecting with medium frequency, superaudio frequency, high frequency and ultrahigh frequency induction heating machine.
• CNC quenching/hardening machine tool feature:
• CNC system:The high-frequency quenching machine CNC system can compile and store a variety of quenching process programs according to different workpiece requirements.
• HMI: programming type and human machine interface displays in English and Chinese.
• Control adjust: it can control the heating power to start, stop, parts heating and cooling time, rotation speed and movement speed.
• Lathe: adopt welded structure with good rust-proof functions.
• Top adjustment parts: adopt electric adjustment, to realize clamping of different length work piece.
• Work table system: adopt ball screw and servo motor to drive, driving light, high guide precision and accurate positioning.
• Main shaft rotation system: adopt variable frequency regulating to realize parts rotation speed continuous adjusted.
• Electric control part: the machine tool has power-loosing protection function, has high safety and reliability.
• Frame: made by thick steel plates, with window and sliding doors, prevent water splash, easy to load parts and monitor hardening process.

CNC vertical hardening/quenching machine tool This series hardening machine tool uses numberic control technology, has continuous, simultaneous, sectionally-continuous and sectionally-silultaneous quenching functions, it is mainly used for induction quenching of shafts, discs, pins and gears, and featured by high quenching precision. hardening machine tool used by connecting with medium frequency, superaudio frequency, high frequency and ultrahigh frequency induction heating machine. According to the different of workpiece, there are vertical type, horizontal type，closed type, customized type, etc. 1.Standard SK-500/1000/1200/1500 workpiece moving type For shafts, discs, pins and gears hardening 2.SK-2000/2500/3000/4000 Transformer moving type , Used for heating length more than 1500mm shaft 3.Closed type : Customized for big shaft ,More clean work environment. 4.Horizontal hardening machine tool SK-500/1000/1200/1500/2000/2500/3000/4000  Used for smooth shaft 5.Customized type Technical Parameter

Model	SK-500	SK-1000	SK-1200	SK-1500
Max heating length（mm）	500	1000	1200	1500
Max heating diameter（mm）	500	500	600	600
Max holding length（mm）	600	1100	1300	1600
Max weight of workpiece（Kg）	100	100	100	100
Workpiece rotation speed（r/min）	0-300	0-300	0-300	0-300
workpiece moving speed（mm/min）	6-3000	6-3000	6-3000	6-3000
Cooling method	Hydrojet cooling	Hydrojet cooling	Hydrojet cooling	Hydrojet cooling
Input voltage	3P 380V 50Hz	3P 380V 50Hz	3P 380V 50Hz	3P 380V 50Hz
Motor power	1.1KW	1.1KW	1.2KW	1.5KW
Dimension LxWxH (mm)	1600 x800 x2000	1600 x800 x2400	1900 x900 x2900	1900 x900 x3200
weight（Kg）	800	900	1100	1200

 

Model	SK-2000	SK-2500	SK-3000	SK-4000
Max heating length（mm）	2000	2500	3000	4000
Max heating diameter（mm）	600	600	600	600
Max holding length（mm）	2000	2500	3000	4000
Max weight of workpiece（Kg）	800	1000	1200	1500
workpiece rotation speed（r/min）	0-300	0-300	0-300	0-300
workpiece moving speed（mm/min）	6-3000	6-3000	6-3000	6-3000
Cooling method	Hydrojet cooling	Hydrojet cooling	Hydrojet cooling	Hydrojet cooling
Input voltage	3P 380V 50Hz	3P 380V 50Hz	3P 380V 50Hz	3P 380V 50Hz
Motor power	2KW	2.2KW	2.5KW	3KW
Dimension LxWxH (mm)	1900 x900 x2400	1900 x900 x2900	1900 x900 x3400	1900 x900 x4300
weight（Kg）	1200	1300	1400	1500

CNC hardening/quenching machine tool feature: 1.CNC system:The high-frequency hardening machine CNC system can compile and store a variety of quenching process programs according to different workpiece requirements. 2.HMI: programming type and human machine interface displays in English and Chinese. 3.Control adjust: it can control the heating power to start, stop, parts heating and cooling time, rotation speed and movement speed. 4.Lathe: adopt welded structure with good rust-proof functions. 5.Top adjustment parts: adopt electric adjustment, to realize clamping of different length work piece. 6.Work table system: adopt ball screw and servo motor to drive, driving light, high guide precision and accurate positioning. 7.Main shaft rotation system: adopt variable frequency regulating to realize parts rotation speed continuous adjusted. 8.Electric control part: the machine tool has power-loosing protection function, has high safety and reliability. 9.Frame: made by thick steel plates, with window and sliding doors, prevent water splash, easy to load parts and monitor induction hardening process.     [caption id="attachment_6788" align="alignnone" width="600"]  [/caption]

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 a wide range of parts including fuel lines, heat exchangers, gas distributors, manifolds, carbide tooling, and more. Principles of Induction Brazing & Soldering Brazing and soldering are processes of joining similar or dissimilar materials using a compatible a filler material. Filler metals include lead, tin, copper, silver, nickel and their alloys. Only the alloy melts and solidifies during these processes to join the work piece base materials. The filler metal is pulled into the joint by capillary action. Soldering processes are conducted below 840°F (450°C) while brazing applications are conducted at temperatures above 840°F (450°C) up to 2100°F (1150°C). The success of these processes depends upon the assembly’s design, clearance between the surfaces to be joined, cleanliness, process control and the correct selection of equipment needed to perform a repeatable process. Cleanliness is ordinarily obtained by introducing a flux which covers and dissolves dirt or oxides displacing them from the braze joint. Induction Brazing Filler Materials Induction Brazing filler metals can come in a variety of forms, shapes, sizes and alloys depending on their intended use. Ribbon, preformed rings, paste, wire and preformed washers are just a few of the shapes and forms alloys that can be found. The decision to use a particular alloy and/or shape is largely dependent on the parent materials to be joined, placement during processing and the service environment for which the final product is intended. Many operations are now conducted in a controlled atmosphere with a blanket of inert gas or combination of inert / active gasses to shield the operation and eliminate the need for a flux. These methods have been proven on a wide variety of material and part configurations replacing or complimenting atmosphere furnace technology with a just in time - single piece flow process. Clearance Affects Strength Clearance between the faying surfaces to be joined determines the amount of braze alloy, capillary action / penetration of the alloy and subsequently the strength of the finished joint. The best fit up condition for conventional silver brazing applications are 0.002 inches (0.050 mm) to 0.005 inches (0.127 mm) total clearance. Aluminum is typically 0.004 inches (0.102 mm) to 0.006 inches (0.153 mm). Larger clearances up to 0.015 inches (0.380 mm) usually lack sufficient capillary action for a successful braze. Brazing with copper (above 1650°F / 900°C) requires the joint tolerance kept to an absolute minimum and in some cases press fit at ambient temperatures to assure minimum joint tolerances while at the brazing temperature. Induction heating has proven to be a valuable aid in the joining process for many reasons. Rapid heading and precise heat control offers the possibility of localized heating of high strength components without significantly changing the material properties. It also allows for the brazing of difficult materials such as aluminum and sequential, multi-alloy brazing and soldering of close proximity joints. Induction heating in brazing and soldering applications is readily adaptable to production line methods, permitting strategic arrangement of the equipment in an assembly line, and if necessary, heating by remote control. Frequently, induction brazing and soldering permits a reduction in the require number of part fixtures, with the minimal heating of the fixtures increasing life span and maintaining accuracy in alignment of the components to be joined. Since operators need not guide the induction heating source, both hands are left free to prepare assemblies for joining. HLQ induction brazing equipment delivers quality, consistency, configurable throughput, and quick change-over tooling for various production needs. The Radyne induction brazing and soldering product line offers standard solutions for brazing: Aluminum Copper Brass Stainless steel Carbide And more…

ultrasonic welding fabric machine for bonding nonwoven fabric

ultrasonic welding fabric machine| ultrasonic nonwoven fabric welder | ultra sonic nonwoven fabric welding equipment with Automatic Frequency Chasing

Main Functions:

1.According to the product requirements,drive mode can choose pneumatic, hydraulic or servo motor drive. 2. The welding temperature, heating time, cooling time, welding depth, pressure, transit time are adjustable parameters,etc 3.In accordance with the requirements of welding procedure, can choose semi-automatic or fully automatic mode; 4.Should be a variety of materials, can adjust the welding procedure

Model	2015B	2018B	1522A	1526A
Frequency	20KHZ		15KHZ
Power	1500W	1800W	2200W	2600W
Max Stroke	75-100mm
Welding Time	0.01-9.99sec
Welding Area	φ100mm	φ120mm	φ150mm	φ200mm
Dimensions	450*750*1100mm
Weight	90KG

  Application Area: Automobile industry, household appliances, electronics, medical,packaging, daily necessities, etc. Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. Beverage bottle, cosmetic bottle, medicine bottle, jar etc.

Application Industry	Application Products
Automotive:	the car door welded baffle welding, automobile, car mats welding, automotive bumper repair welding, cotton insulation doors, seat wipers, engine cover, radiator cap spot, etc
Consumer Products:	daily necessities, stationery, filter, folder and shell, pen stand, cosmetics box shell, the end of the toothpaste tube seal, mirror, insulated cup, lighter.
Electronics:	recording, audio tape boxes and core wheel, disk enclosure, the board of mobile phone batteries and rectifier transformers, switches and sockets, remote control,
Home appliances:	Balance ring, electronic clock, electric trumpeter hair dryer, steam iron water tank,
Toy:	plastic toys, water guns, aquatic life video game, children dolls, plastic gifts, etc
Film & Fabric:	Filters, Shower Curtains, Biodegradable Bag, Non-Woven Face Mark,..etc.
Packaging:	Plastic pallet, Corrugated tray, hollow crate welding, zip lock welded, etc
Medical:	Surgical Instruments,Testing Equipment,filters,I-V units,insulated trays..etc.

  Main Features 1. Ultrasonic plastic Welder, manually tuning, simple to use and maintenance. 2. Welding by time, delay time, weld time and hold time. Working pressure is adjustable. 4. Precise and high quality imported pneumatic parts 5. High quality transducer and booster. 6. Self-protection: Over-Current, Frequency Deviation, Over-Temperature 7. Available in 4 frequencies – 15 KHz, 20 KHz ,35 KHz and 40 KHz. 8. Quick application changeover, high welding seam strength. 9. Suitable for high cadences and short cycle times. Ultrasonic Welding Horns/ultrasonic welding molds: Applications: ultrasonic welding nonwoven fabric machine | Ultrasonic welding plastic machine is widely used in automotive industry, electronic industry, medical industry, household appliances, woven apparel, office supplies, packaging industry, toy industry, and so on. Automotive industry: plastic body parts, car doors, automotive dashboard, lights, mirrors, sun visor, interior parts, filters, reflective material, reflective spike, bumper, cable, plastic filter for motorcycle , Radiator, brake fluid tank, oil cups, water tanks, fuel tank, air hose, exhaust purifiers, the tray plate, and so on. Plastic Electronics: prepaid water meters, communications equipment, cordless phones, mobile phone accessories, cell phone case, battery case, charger, maintenance valve regulated lead-acid batteries, 3-inch floppy disk, U disk, SD card, CF card, USB connection, Bluetooth devices, and so on. Stationery: folder, album, folding boxes, PP hollow board, pen loops, ink cartridges, toner cartridges, and so on. Medical and Daily products: watches, kitchen utensils, oral liquid bottle caps, drip caps, mobile phone accessories, golden soft brush, and daily necessities, handle, security caps, cosmetics bottle, coffee pot, washing machines, air dehumidifiers, Electric irons, electric kettles, vacuum cleaners, speakers, cover and metal face grille and other civil engineering and so on. Health products: children's products, air mattresses, clothes hangers, gardening supplies, kitchenware sanitary ware, shower, shower head, and so on.       [wpforms id="3947"]

Shrink Fit Steel Gear onto Shaft

Shrink Fit Steel Gear onto Shaft With High Frequency Induction Heating Units Objective Heat the bore of a hardened spur steel gear to shrink fit onto a gear motor shaft. This is part of a chair for the disabled. Material Steel gear 2.5” (63.5mm) OD, .75” (19mm) ID x .625” (16mm) thick, temperature indicating paint Temperature 400 ºF (204 ºC) Frequency 300 kHz Equipment • DW-UHF-3.2 kW induction heating system, equipped with a remote workhead containing two 0.66 μF capacitors for a total of 1.32 μF • An induction heating coil designed and developed specifically for this application. Process A four turn helical internal coil is used to heat the gear bore. The coil is inserted into the gear bore and power is applied for 90 seconds to reach the required 400 ºF (204 ºC) and expand the gear bore. The gear is then placed on the shaft and allowed to cool, creating the shrink fit between the gear and the shaft. Results/Benefits Induction heating provides: • No pre-heat cycle, heat is available on demand • Energy efficient, heats only the part, not the atmosphere around it • Controlled, even distribution of heating • Faster production times

Induction Soldering Brass To Copper

Induction Soldering Brass To Copper With IGBT High Frequency Heating Equipment Objective To heat brass and copper for soldering application on medical equipment Material Brass ring, brass and copper pieces 5.11” (130mm) long, 4.3” (110mm) OD & 0.3” (7mm) at thickest point and solder rings Temperature 392 ºF (200 ºC) Frequency 306 kHz Equipment • DW-UHF-10 kW 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 This process is completed in two steps that use a 3 turn helical coil. The first process is to solder the brass ring to the copper piece which takes 85 seconds. The second step is to solder a large brass piece to the first assembly. This process takes 50 seconds for a total process time of two minutes 15 seconds. Results/Benefits Induction heating provides: • Hands-free heating that involves no operator skill for manufacturing • Even distribution of heating • Faster process time, current process takes 5 minutes • Consistency by using solder rings                                              

Aluminum Can Recycling Furnace with induction heating

The top 200^1200kg Induction Heating Aluminuim Can Recycling Furnace for recycling and melting aluminum scraps,ingots,cans and dross material.

Operation Steps:

• An Induction Aluminum scraps/ingots/cans recycling furnace operator will place aluminum parts or aluminum ingot/scrap as a charge in the induction melting aluminum recycling furnace and start the furnace to begin the melting process. Adding more aluminum charge this process is advisable as molten aluminum transmits the heat better.
• When temperature of the aluminum reaches 1220.66°F it turns to liquid. Any residue from the coating and paint from the cans will float on the surface. This byproduct is called dross and can be skimmed by a steel ladle. This needs to cool before it can be disposed off safely.
• Next, the crucible (furnace) will pour out pure aluminum. Usually, Hydraulic tilting mechanism provided to pour large quantities of liquid metals.
• Finally, with care, the molten aluminum will be poured into mould to cool down and then slide out for use.

Advantages of induction aluminum can recycling furnace: 1, save energy and reduce the environmental temperature Original diesel furnace workshop on pollution, but also the auxiliary exhaust pipeline, inside and outside the furnace heat has a large number of distribution in the workshop, resulting in high temperature workshop. So is the original furnace condition, most escapes to the air, there is heat conduction loss, the production of large power consumption, increase the cost of production. At the same time, the ambient temperature increases. The electromagnetic induction heating process, the heating element is through magnetic field heating, in order to reduce the loss of heat conduction, fast heating, melting rapidly, thus reducing energy consumption. Reduce electricity consumption. After the comparison of the experimental test and modification, the power saving effect is 20%-40%. 2, rapid heating, temperature control accurate real-time Electromagnetic induction heating method is through the magnetic field lines make heating rapid heating, the rapid melting Aluminum Alloy. The temperature control is real-time and accurate, which improves the quality of the product and improves the production efficiency! 3 and long service life, simple maintenance The traditional electric melting induction furnace heating method is to use resistance wire heating, resistance wire in the high temperature environment for a long time in the use of oxidation will result in reducing its service life, high maintenance costs. The electromagnetic heating coil is made of insulating material and high temperature wire, so the service life is long and without any maintenance. 4, power Electromagnetic induction heating with the development and maturity of the technology, the production process and technology of components, software, such as reliable protection of the current power can be 2-200KW. 5, safe The utility model adopts the electromagnetic induction heating, which can reduce the surface temperature of the machine, and the human body can be safely touched, so as to avoid the occurrence of burn and scald accidents caused by the traditional heating mode and protect the production safety of the employees. Features 1 energy saving and environmental protection, Germany's IGBT power devices, high reliability, stable operation and low maintenance costs. 2) the frequency of the digital phase locked loop tracking, automatic load impedance matching. 3 power closed-loop control, to avoid the temperature change caused by the power down. 4) over voltage, under voltage, lack of phase, over current, over heat protection, real-time display of the parameters, fault diagnosis and alarm; leakage automatic alarm, cut off the power supply and the working state of real-time display. 5) PID heating control system, uniform heating temperature, prevent molten aluminum temperature drift, burning less, homogeneous metal components to improve the product qualification rate. 6 (LED) digital temperature controller, measuring and controlling the temperature accuracy of up to 3 degrees centigrade, the quality of aluminum soup is good, the melting temperature rises quickly, the furnace temperature is easy to control, the production efficiency is high; 7) the integral structure of polycrystalline mullite fibers of furnace, small volume, good insulation property, low energy consumption, high efficiency, temperature above 1200 degrees, long service life; 8. The operation is simple and the power can be adjusted with the work; 9 (100%) load duration, maximum power, to ensure the operation of 24 hours. Melting capacity of SMJD series electric aluminum cans recycling melting furnace:   

Type	Input Power	Melting Capacity			Max Temperature
		steel, stainless steel	copper, gold, silver (scrap, Slag)	aluminum, aluminum alloy, Aluminum scrap, Aluminum slag, pop can	1800℃
SMJD-463	60 KW	200 KG	500 KG	200 KG
SMJD-480	60 KW	150 KG	500 KG	150 KG
SMJD-580	80 KW	200 KG	600 KG	200 KG
SMJD-600	60 KW	230 KG	560 KG	230 KG
SMJD-900	120 KW	300 KG	900 KG	300 KG
SMJD-905	80 KW	300 KG	900 KG	300 KG
SMJD-1250	80 KW	400 KG	1200 KG	400 KG
SMJD-1250	120 KW	450 KG	1350 KG	450 KG
SMJD-1500	120 KW	500 KG	1500 KG	500 KG
SMJD-1550	120 KW	520 KG	1560 KG	520 KG
SMJD-1700	160KW	600 KG	1700 KG	600 KG
SMJD-2300	160KW	800 KG	2000 KG	800 KG
SMJD-3100	200KW	1200 KG	3000 KG	1200 KG

[pdf-embedder url="https://dw-inductionheater.com/wp-content/uploads/2018/10/SMJD-melting-aluminum-furnace-parameter.pdf" title="SMJD melting aluminum furnace parameter"]       [pdf-embedder url="https://dw-inductionheater.com/wp-content/uploads/2019/03/Aluminium-Scraps-Recycling-Melting-Process.pdf" title="Aluminium Scraps Recycling Melting Process"]

Induction Brazing Aluminum Pipes

Induction Brazing Aluminum Pipes Objective: Brazing two aluminum pipes simultaneously to an aluminum evaporator core Material 2 aluminum pipes 0.72" (18.3mm) diameter, evaporator core 9.88" x 10.48" x 1.5" thick (251mm x 266.3mm x 38mm), braze rings Temperature 610 ºF (321 ºC) Frequency 250 kHz Equipment • DW-UHF-20KW induction heating system, equipped with a remote workhead containing two 1.5μF capacitors for a total of 0.75μF • An induction heating coil designed and developed specifically for this application. Process A four turn helical pancake coil is used to heat the 2 pipes simultaneously. Three braze rings are placed on each joint and power is applied for 90-100 seconds to create a leak proof joint on both pipes. Narrative • Customer is requiring a 40 seconds heat time for both brazes. In order to meet this requirement 3 units will be utilized to braze 2 joints each for a total of 6 joints in 90-100 seconds. The customer is currently using a flame process which can burn away the thin flange at the joint area and create scrap parts. By switching to induction for this application the customer is decreasing their scrap parts and also increasing their quality and production rate. Results/Benefits Induction heating provides: • Repeatable leak free joints • Increased part quality, less scrap • Hands-free heating that involves no operator skill for manufacturing • Even distribution of heating

handbook of induction heating eddy current

PDF handbook of induction heating eddy current

Both induction heating and eddy current testing work with coils, generators, ac-current and ac-voltage, frequencies, field strength and induction law. Contrary to heating of the test parts, the eddy current test does not want to heat the parts at all but wants to examine them for their metallurgical microstructure, thus for their mechanical features like hardness, case depth or alloy. The eddy current test does not provide absolute values (e.g. "56 HRC" or "2.6 mm case depth"). The eddy current test does detect fine differences in micro-structure with high sensitivity. In the production line, within a fraction of a second, a non-destructive 100 % test for • hardness • case depth • hardness run out, hardness pattern • tensile strength • carbon content • soft spots • surface decarburisation is completed, and thus quick corrective reactions to any variance from the specified structure can be realized. With a suitable mechanical part handling arrangement, the transport from the hardening station to the test station takes only a few seconds. Faulty parts, caused by a damaged inductor, a jammed quench nozzle or an unknown reason are immediately detected, providing an enormous savings in time and costs! [caption id="attachment_7309" align="alignright" width="1024"] induction-heating-eddy-current.[/caption] Different from the induction heating, the energy for eddy current testing is very small, in the milliwatt range. Field strength is low and permeability is in the range of the initial permeability. Test frequencies ranging from some Hz to some hundreds of kHz provide information on undesired structures via the frequency dependent penetration depth of the eddy current and on the formation of permeability. Very small electrical signals require a very precise evaluation in order to assure their differentiation from ambient interferences. A small drift from variation in temperature and high long term stability are absolutely necessary. Digitization of input voltages immediately at the front end of the electronic evaluation is of huge advantage. Handbook-Induction-Heating-Eddy-Current-Paper-EN

induction coating removal for removing paint

Induction coating removal principle

The induction disbonder works by the principle of induction. Heat is generated in the steel substrate and the bonding is broken. The coating is then removed entirely without disintegrating and completely free from contaminating agents, i.e. blast media.This obviously makes disposal and recycling of waste easier and cheaper. Even inside the pittings and cracks in the surface the coating is disbonded. The HLQ Induction heating works by fast transfer of energy to the steel substrate, as a result securing a controlled heating of the surface and fast removal of most types of coatings.

What is induction coating removal?

The HLQ Induction coating removal system is a state-of-the-art induction heating tool that rapidly strips paint and tough, high-build coatings. It is a faster, cleaner and safer way to strip coatings.

What are the benefits?

Induction heating can outperform traditional paint-stripping methods. Abrasive blasting or disk grinding are generally more labour intensive and come with other issues such as the cost of enclosure or containment and collection of blast media, plus the filtration or separation of the coating materials for disposal. In many urban projects these are prime considerations and extremely costly to overcome. Whereas, when coatings are removed by induction, the only waste is the coating itself which in most cases can be swept or even vacuumed like any other workshop waste.

Safer working environment: The controlled, localized heat results in significantly reduced fumes and toxic dust.

Easy clean-up: The coating material mainly peels off in flakes rather than being pulverized.

Noiseless operation: Operators can work in public areas without creating a disturbance.

Mobile: The equipment is rugged and reliable but still light-weight and easy to move around worksites.

Reduced energy consumption: Fast, accurate and repeatable heat delivery makes the coating removal process extremely energy efficient.

Method flexibility: Spot heating, scanning, freehand and semi-automatic.

No limitations: The system can be used at flat surfaces, round contours, inside/outside corners, both sides of substrate, round rivets, etc.

Where is it used?

Induction coating removal is used in many industries, such as ships/marine, buildings, storage tanks, pipelines, bridges and offshore.

induction heating involves using alternating current and an induction coil to generate a powerful electro-magnetic field. When used properly, this field generates heat below a coating on a steel substrate, resulting in the coating de-bonding quickly and easily from the metal surface. At Alliance, we use this process to remove coatings from steel such as:

• Multiple coatings including epoxies, urethanes and others
• Lead paint
• Fire-retardant coatings (PFPs)
• Glued and vulcanized rubber as well as chlorinated rubber

Induction Coating Removal On Storage Tanks – The Induction Heating System for coatings removal is highly suitable for fast and efficient stripping of large surfaces or for inspection of weld seams in storage tanks. Experience from work on tank bottoms have shown that thick glass-fiber (5-6 mm) can be removed with stripping rates up to 10-12 m2/hr. while thinner traditional painting systems can be removed in rates up to 35 m2/hr. Not only does the Induction system yield great economic benefits like higher stripping rates and minimal waste disposal, but it is also enables environmentally – and operator friendly operation. Induction Coating Removal On Pipelines – The patented HLQ Induction Heating System for coatings removal has proven to be very effective on pipes and live pipeline projects around the world. It efficiently and safely removes coatings such as Coal Tar, Ebonite, 3LPE/3LPP, rubber and other tough linings with thickness up to 30 mm. Coatings removal with HLQ Technologies is cost effective and does not produce additional grit or water waste, yielding great potential for savings in logistic handling, especially in remote areas.The coatings is removed easily in strips or pieces that is easy to put in waste bags for disposal without risk of contamination to air, ground or water. ​ Working distance from the main unit is up to 100m that allows a flexible and efficient operation. HLQ has developed a patented solution that eliminates the risk of overheating the surface when using the induction system on steel. This has been a prerequisite in the process of successfully receiving approval for use on live oil- and gas pipelines.

Induction Hardening Steel Part with High Frequency Hardening Machine

The goal of this induction heating application is to heat complex shape steel tools for hardening and integrate the process on a conveyor line to increase productivity. Industry: Manufacturing Equipment: DW-UHF-10KW induction hardening machine Materials: Steel tool parts Power: 9.71kW Time: 17 secs Coil: Custom designed 4 turn helical coil. The Process: The induction coil is designed to provide uniform heat to the entire part. The induction heat is applied to the entire part. The sample is then quenched into water. The exact time and power of the induction heat have to be determined based on the specific hardening and production requirements. The benefits of induction hardening for tools parts include fast heating, increased production rates, increased energy efficiency, automation and repeatability. DW-UHF induction heating systems are widely used for similar induction hardening applications. [wpforms id="3947"]

Aluminum Billet Heating Furnace

Continous Aluminum Billet Heating Furnace/Aluminium Alloys Billet Heater for the heating Aluminum Billets/Rods/Bars before the hot formging, extrusion, hot rolling and cutting,etc.

Induction Heating is a proven, reliable and efficient method of heating  hot forming aluminum alloys. However, aluminum alloys have material properties that, if unaccounted for, can result in unexpected challenges. Understanding the unique facets of the induction heating of aluminum can be achieved by considering the properties that make aluminum alloys such advantageous materials. Given that aluminum and its alloys offer numerous advantages over many other metals, it is not surprising that inquiries about induction billet-heating equipment increasingly involve the heating of aluminum alloys. Many of these inquiries focus on how the induction heating of aluminum differs from the induction heating of other materials – typically steels – and how these differences affect heating quality, efficiency and productivity. Electromagnetic induction is well-suited for the heating of aluminum-alloy billets. However, there are some critical, yet easily overlooked, realities of aluminum billet heating that should be considered when designing, operating and maintaining this type of equipment. Fundamentally, the induction heating of aluminum alloys is no different than that of other common materials (e.g., carbon-steel and stainless steel alloys). It is ultimately material-property differences that set apart the induction heating of aluminum alloys from other metals. These material-property differences, if unaccounted for, can result in unexpected equipment performance and practical challenges. Because the users of most continuous induction billet-heating systems are familiar with the induction heating of steels and carbon-steel and stainless steel alloys, they provide a convenient point of reference in the consideration of the continuous heating of aluminum-alloy billets. HLQ Induction Equipment Co.,Ltd specializes in continous aluminum billet heating furnace/aluminium billet heater for heating aluminum billets/bars/rods before the hot formging, extrusion, hot rolling and cutting,etc.