Heaters

Ultrasonic induction heating equipment IGBT inverter used, high efficiency and low energy consumption Can work continuously with 100% duty cycle and set up 100% at any load Can replace convention heating method such as heating by flame coal salt bath gas and oil Work frequency 10-30Khz, power 30-250KW Digital display and compact design, light weight, easy for installation and operation Soft switch technology and prefect protection system enhance good reliability. Can equipped with infrared temperature detection system (Optional) Water cooling system, chiller is available Induction Heating Machine Application For bar end or head preheat before hot forging for bolt nut and fastener produce, below table for reference only. Hardening: For gear shaft pin or other metal parts heating, need to know hardness and depth Brazing long bar thread bar heat treatment Pipe heating for elbow produce, hot bender Why Choose Us? 1. More than 20 years of experience in induction heating industry. 2. Free test for choosing the machine model before purchase. 3. Product design research develop and maintain by the Duolin Engineer team, machine lifetime service. 4. Test the machine as customer heating requirements and aging more than 6 hours to guarantee the good quality. 5. Offer installation manual and troubleshooting guide. 6. Use famous brand components Infineon Omron Schneider to ensure quality of material.

Power: 100--1000KW Work Frequency: 0.5-10Khz Application: For billet partial and total hot forging Turnkey induction heating system, including the induction power supply, heating furnace, water cooling system, automatic steel bar feeding, infrared sensor, bar sorting system, easy to put into hot forging production line. IGBT Induction Heating Machine Technical information 1. Good start up performance: IGBT MF induction power supply apply series resonance technology so it can be starts up 100% under any condition. 2. Less indterface to power grid: Less harmonic current and high power factor, Power factoer remaining 0.95 above during machine running. 3. Low energy consumption: in series resonant circuit,voltage at inductor high and current low so energy loss is very low; Soft switch technology applied then switch loss is very low. 4. Water cooled by heat exchanger: Using distilled water as circulating water to avoid sediment and clog of hose. 5. Good reliability: IGBT is a self turn-off transistor that ensures incersion with suvvess and takes protection instantly; IGBT used form Infineon world- renowned manufacturer. 6. High conversion efficiency more than 97.5%: IGBT(Insulated Gate Bipolar Transistor)inversion technology. 7. Energy saving up to 15%-30% compared with SCR technology induction machine: LC series resonance circuit and voltage feedback design, low energy comsumption. 8. Cooper &stainless steel fasteners and radiator, better cooling and anti- electrolysis. Medium Frequency Induction Heating Machine Feature 1: For billet full preheating or local induction heating before hot forging or forming, diameter range wide up to 200mm. 2: Pneumatic pusher, chain delivery system, pick up system three channel and Infrared thermometer system are available. 3: Well designed winding process and high quality copper tube brings result of high efficiency and energy saging. 4: Quick change connection enables replacement heating furnace conveniently. 5: PLC to realize the automatic, save labor and improve the production.

Power 30-300KW Work  Frequency 50-250Khz Digital display Constant power and current output Safe,Low voltage output PLC interface available for automatic work Wide inductance to connect with different heating coil 8 fault indicators to protect machine Water cooled induction power unit and transformer 1. Good start up performance: IGBT MF induction power supply apply series resonance technology so it can be starts up 100% under any condition. 2. Less indterface to power grid: Less harmonic current and high power factor, Power factoer remaining 0.95 above during machine running. 3. Low energy consumption: in series resonant circuit, voltage at inductor high and current low so energy loss is very low; Soft switch technology applied then switch loss is very low 4. Water cooled by heat exchanger: Using distilled water as circulating water to avoid sediment and clog of hose. 5. Good reliability: IGBT is a self turn-off transistor that ensures incersion with suvvess and takes protection instantly; IGBT used form Infineon world- renowned manufacturer. 6. High conversion efficiency more than 97.5%: IGBT(Insulated Gate Bipolar Transistor)inversion technology. 7. Energy saving up to 15%-30% compared with SCR technology induction machine: LC series resonance circuit and voltage feedback design, low energy comsumption. 8. Cooper & stainless steel fasteners and radiator, better cooling and anti- electrolysis. 9. Integrated design with water cooler, inductor, feeding system and three chanel sorting system, infrared sensor,less space for installation. 10. Good reliability, prefect protection system, reliable components, soft switch technology. 11. Customized local input power, 400V+/-10% 50Hz or 600V 60 Hz. 30-50KW High Frequency Induction Heating Machine Technical Advantage 1. Research, design and produced under ISO 9001:2015 by Duolin team, quality and delivery time under control. 2. Machine cabinet sealing,protect the induction heating equipement under complex working environment. 3. Door switch design for safety. 4. Less interference to the power grid, do not need compensation capacitor: High power factor-more than 0.95. 5. Induction heating equipment start under any condition 100%. 6. DSP and HMI technology, display the machine work data and indicate the fault output. 7. 0-10v or 4-20ma signal offered for automatic production line. 8. Intelligent control system,PLC control, connect with factory MES system site management, provide base for modern management of enterprises. https://www.duolin.com/

Under background of industry 4.0 and customer new request for saving the labor, full and semi-automatic production become the new trends in manufacturing industry. Duolin helped our customer for transforming the manual production line to automatic with PLC and robot,especially in hot forging fasteners and gear auto parts and other metal parts induction heat treatment industry. Automatic high frequency induction line has advantage below 1:‌ Improve production efficiency‌: Through precise robotic arms and advanced control systems, automated production lines can realize automatic cutting, grinding, assembly and testing of raw materials, thereby greatly improving production efficiency. Compared with manual operations, automated production lines can work 24 hours a day without interruption, flexibly adjust production plans according to market demand, and ensure that products can be delivered to customers in a timely manner‌ 2:‌ Ensure product quality‌: The introduction of Custom Induction Heating Equipment ensures the stability and consistency of product quality. Robotic arms and control systems can accurately perform operations in each production link, thereby effectively ensuring product quality. In addition, automated production lines can also collect and analyze data in the production process in real time, providing strong support for production management and quality control‌. 3:‌ Improve working environment‌: Automated production can effectively prevent employees from being exposed to high temperature, high humidity, dust, noise and other adverse production environments for a long time and at close range, reduce employee work intensity, reduce the occurrence of work-related accidents, and improve employee health‌. 4:‌ Reduce production costs‌: Automated production lines can replace manual labor to perform large-scale, repetitive and dangerous production actions, effectively improving labor productivity. At the same time, automated production can also reduce labor costs and solve the dilemma of enterprises' difficulty in hiring workers. 5:‌ Improve safety‌: Automated production lines reduce manual operations, thereby reducing safety hazards. Robot and control systems can replace workers to complete some heavy and dangerous work, reducing equipment failure rates and maintenance costs. 6:‌ Intelligent control‌: The application of technologies such as intelligent temperature precision control and synchronous three-stage sorting system enables automated production lines to achieve more refined production control, avoid the outflow of unqualified materials, and improve overall production quality and efficiency. If you have any demand for induction heating production line, don't hesitate to contact Duolin team, we will offer you professional solution.

Medium frequency generators are widely used in various industrial applications for their high efficiency and ability to generate high-quality power.  110kw Induction Heating Generator Application: 1, Standard parts heating forging 2, Smelting of various metal materials 3, Motor rotor heating match 4, Steel pipe end heating tube expansion 5, Mold diathermy 6, Shaft intermediate frequency quenching 7, Weld preheating or tempering after welding MAIN FEATURES Guidance before Order: 1, We only have medium frequency power supply in stocks. We will match for the proper compensation capacitor and induction coil or heating furnace according to the customer's heating workpiece and heating requirements. Therefore, ordering or consulting customers need to provide the following information: (1) The material and size of the heating workpiece; (2) The use of heating and heating temperature, as well as heating time requirements; Is it diathermy or surface heating? If it is surface heating, what is the depth of heating? And so on (3) There is no limit to the mode and size of the induction coil. Like from the inside or the outside? Closed or open coil? Is there any susceptible metal material within 100MM nearby the induction coil? (4) Are there any specific requirements for frequency? (5) Heating atmosphere: in the atmosphere or in the vacuum furnace? Is there a protective gas? (6) Other details related to the equipment scheme? Contact us

Medium frequency generators are widely used in various industrial applications for their high efficiency and ability to generate high-quality power.  160kw Induction Heating Generator Application: Medium Frequency Induction Heating Machine can do diathermy heating before forging, forming, bending etc for standard parts, fasteners, large workpieces, small hardware, straight shank twist drills, overall and partial heat penetration and hot upsetting and hot rolling of twist drills, round steel with a diameter of less than 100mm. 1. Standard parts heating forging 2. Smelting of various metal materials 3. Motor rotor heating match 4. Steel pipe end heating tube expansion 5. Mold diathermy 6. Shaft intermediate frequency quenching 7. Weld preheating or tempering after welding Medium frequency generators MAIN FEATURES Guidance before Order: 1, We only have medium frequency power supply in stocks. We will match for the proper compensation capacitor and induction coil or heating furnace according to the customer's heating workpiece and heating requirements. Therefore, ordering or consulting customers need to provide the following information: (1) The material and size of the heating workpiece; (2) The use of heating and heating temperature, as well as heating time requirements; Is it diathermy or surface heating? If it is surface heating, what is the depth of heating? And so on (3) There is no limit to the mode and size of the induction coil. Like from the inside or the outside? Closed or open coil? Is there any susceptible metal material within 100MM nearby the induction coil? (4) Are there any specific requirements for frequency? (5) Heating atmosphere: in the atmosphere or in the vacuum furnace? Is there a protective gas? (6) Other details related to the equipment scheme?

The induction boiler provides instant hot water. Magnetic induction water heater requires no chimney, is easy to install, compact in size, operates at 100% efficiency, and runs quietly. It is a popular choice for home or hotel heating needs. Magnetic Induction Water Heater Advantages 1. High efficiency and energy saving: The thermal efficiency is over 90%. Under the same conditions, induction heating can save more than 30% of electricity than the resistance heating method, and some even save 80% of electricity. The preheating time can be shortened.  2. Reliable operation: Multiple closed-loop intelligent control systems and perfect protection systems ensure long-term safe and reliable operation of the equipment.  3. Reduce production costs: The heating part adopts a cable structure. The heating cable itself does not generate heat and has a long service life. Magnetic induction hot water heater avoids the need for frequent maintenance and periodic replacement of the heating coil for resistance heating, and there is basically no maintenance cost in the later period.  4. Improve working environment: The heating part has less heat dissipation, and the surface can be touched by hand, which improves the environmental conditions at the production site.  5. Intelligent multi-temperature zone control: The induction room heater uses a LCD screen to display the real-time temperature and set temperature range. The built-in chip can intelligently control the heating speed and output power, and can be flexibly adjusted according to the actual situation. Ultra-high temperature heating electromagnetic heating coils have been applied to manufacturers of plastic products, plastic films, pipes, profiles and similar industries, and have achieved good results. They have the characteristics of convenient installation and strong interchangeability. Better economic benefits than ever.

Descriptions Main features of "ZG-Hitfar" bearing electromagnetic induction heaters: 1. Quick setting of temperature; 2. Real-time temperature display; 3. Automatic over-temperature protection; 4. Automatic heat preservation, etc. APPLICATION The bearing induction heaters are mainly used to heat various types of metal parts such as bearings, gears, bushes, shaft sleeves, diameter rings, pulleys, shrink rings, connectors, etc. The bearing heaters expand by heating to achieve interference The need for assembly. Functions include: quick setting of temperature, real-time temperature display, automatic over-temperature protection, automatic heat preservation, etc. The Structure & Working Principle of Bearing Induction Heater The bearing induction heater is a kind of air-cooling frequency induction heating device, which is composed of induction heating main control, yoke steel, temperature controller & sensor and other accessories. The purpose of heating the bearing is to cause the bearing to produce thermal expansion, so that the bearing can be smoothly sleeved on the shaft. In fact, the working principle of bearing heater is applied electromagnetic induction heating, which is actually the use of magnetic fields. When we put the bearing on the yoke steel, the circuit is closed and a magnetic field is formed. The heated work piece is a equivalent to a resistance. The current in the magnetic field will accumulate every time it passes through the resistance. As a result, the workpiece is also heated. The Advantage & Feature of Bearing Induction Heater - Safe, clean and environmentally friendly Traditional methods, such as live roasting, oil bath, oven roasting, are not only costly but also produce coke smoke, odor and waste oil. The application of induction heaters can replace traditional methods to create a safe and clean working environment. - Fast and without damage After heating, the bearing expanded outward in the cylindrical direction, which can avoid damage during installation. Induction heating is an excellent heating method, and it does not need to be preheated. The bearing can be heated to 120°C in a few seconds or minutes without damaging the pre-lubrication. - Rational design In order to meet the requirements of the industrial environment, the design concept of induction bearing heater for sale is modernization, rationalization, easy operation and high durability. Portable bearing heater is a convenient heater to facilitate the on-site use.

Variable frequency induction heating water heater, is high frequency of electromagnetic induction heating, water and electricity separate completely. Induction geyser has never leakage by using the anti-electric wall and leakage protection switch. It equips with intelligent automatic temperature control operation to avoid electric bar leakage and other unsafe factors. The working principle of electromagnetic induction geyser Induction heating water boiler is based on the principle of electromagnetic induction heating. It uses AC rectification to DC power and then inverts it into high-frequency alternating current. Induction geyser acts on the induction coil to generate an alternating magnetic field. The induction heater body generates countless small eddy currents. The heating furnace (here refers the steel pipe with water passing through) is heated by eddy current collision body, so that the water in the furnace can be heated. There is more than 20mm of insulation material between the water and the coil, but the thermal efficiency can reach 97%, environmental protection and safety, short warm-up time, and fast heating speed. HITFAR electromagnetic induction water heating systems include: frequency conversion electromagnetic heating controller, intelligent operation control system(PLC), electromagnetic induction heating coil, heater body and protection circuit. Please check the below diagram for your kind references! Main Features of 4-15kw Household Use Style, Wall Mounted Type 4KW~15KW 220V-1P Induction Water Heater : 1. No high voltage leakage: water & electricity seperated completely 2. 4-segment programmable timing function 3. Standard modbus RTU communication protocol 4. Touch Screen & PLC 5. World famous brand Infineon IGBT frequency conversion technology 6. Up to 30 kinds of protection functions 7. Perfect reliability design 8. No noise pollution at all 9. No air pollution at all 10. Energy Saving at least 30% than traditional boilers

High frequency induction furnace has the remarkable ability to heat the entire workpiece or selectively target specific areas. This precise control translates into significantly lower power consumption, saving you valuable resources. POWER: this light is on when the control power switch is on. OPERATE: this one is flashing briefly and beeps have been heard constantly when the high frequency induction machine is working. OUTPUT OVERVOL.T: (NO). PHASE FAIL: this light is on shows that 3-phase has failed. If it is single phase, this light will be useless. SHORT CIRCUIT: When the light is on and the alarm is given, the IGBT module of the regulating part may be damaged, or the short circuit sensor may be damaged. Please consult our company for repair. OVER TEMP: When the temperature of these components is lower than 55 ℃, the alarm will be automatically lifted, and the overheat indicator light will go out. WATER FAIL: The light would be on and beeps would been heard if water flows too slow or pipes are blocked, the high frequency hardening machine would stop automatically. OVER CURRENT: the following six conditions may be happened when the light is on: ①signal interfered; ②the internal temperature being too high; ③breaking down of the machine; ④the soft induction ring been short circuited because the crucible or other metallic parts been touched the soft induction ring; ⑤two cycles of the ring been touched each other; ⑥input voltage is too much lower or overloaded.

Crafted with precision and innovation, this Super-Audio High Frequency Solid State Induction Heating Quenching Machine combines Siemens IGBT technology and German inverter expertise to deliver unmatched performance and reliability. 1. High frequency heating for hot upsetting of various high-strength bolts and nuts; 2. High frequency quenching of various gears, sprockets and shafts; 3. High frequency quenching of various axle shafts, leaf springs, shift forks, valves, rocker arms, ball studs and other auto parts. 4. High frequency quenching of various internal combustion engine parts and deceleration surface parts.   5. High frequency hardening of various pliers, scissors, axes, hammers and other hand tools. 6. High frequency hardening for all kinds of picks, drill bits, drill pipes, coal drill bits, air drill bits and other mines. 7. High frequency surface hardening for all kinds of bars, rods, sticks. 8. Diathermy forging heating of bars with a diameter of less than 800mm. 9. Hot upsetting and hot rolling of mechanical spare parts, hardware tools and straight shank twist drills. MAIN FEATURES 1. Adopt Siemens IGBT module as power driving part and unique inverter technology from Germany. 2. 100% load rate, can be working 24-hour per day even in maximum power working mode. 3. Automatic control type: heating time, heating power, holding time, holding power and cooling time can be adjusted. 4. Simple operation steps for any new worker can be learned in several minutes. 5. Simple installation, just connecting the 380V three-phase power supply, water inlet and outlet, and it can be completed in a few minutes. 6.  Solid State induction heater occupies a very small area, the operation is simple, and it can be learned in a few minutes. 7. Especially safe, the output voltage is lower than 36V, avoiding the danger of high voltage electric shock. 8. Heating efficiency is as high as 90% or more, saving energy. 9. Complete automatic protection functions such as over-current, over-voltage, over-temperature, water shortage, and lack of water, and is equipped with a fault self-diagnosis alarm system.

Product Description DIAGONAL FLOW BRAZED HEAT EXCHANGER APPLICATION FOR CENTRAL AIR-CONDITIONING INDUSTRY Product Introduce : Diagonal Flow Brazing Heat Exchanger is special for central air-conditioning , industrial chiller, large-scale heat pump system , etc ... refrigerating fluid use in duplex compressor , its max heat transfer power can reach 600KW , especially optimization design refrigerating fluid type R410A in the structure . Product Feature: High Capacity , High Efficiency , Apply to Polytropic Refrigerant Features : High Thermal Conductivity: Copper is known for its excellent thermal conductivity, allowing for efficient heat transfer between the fluid streams. This results in improved heat exchange performance and reduced energy consumption. Corrosion Resistance: Copper exhibits good resistance to corrosion, making it suitable for handling various fluids, including those with high acidity or alkalinity. It is particularly resistant to pitting corrosion, making copper plate heat exchangers durable and long-lasting. Excellent Heat Transfer Efficiency: The design of copper plate heat exchangers, with their large surface area and optimized plate patterns, promotes enhanced heat transfer efficiency. This enables effective heat exchange even with compact designs, resulting in compact and space-saving heat exchangers. Versatility: Copper plate heat exchangers can be used for a wide range of applications, including heating, cooling, evaporation, condensation, and heat recovery. They find applications in industries such as HVAC, refrigeration, chemical processing, power generation, food processing, and more. Easy Maintenance: Copper plates are relatively easy to clean and maintain. They are resistant to fouling and can be cleaned using various methods, including chemical cleaning or mechanical scrubbing, ensuring optimal heat transfer performance over time. Longevity: Copper plate heat exchangers are known for their durability and long service life. Copper is a robust material that can withstand high pressures and temperatures, making it suitable for demanding industrial applications. Thermal Shock Resistance: Copper exhibits good resistance to thermal shock, allowing copper plate heat exchangers to handle sudden temperature changes without compromising their structural integrity. Environmentally Friendly: Copper is a recyclable material, making copper plate heat exchangers environmentally friendly. They can be recycled at the end of their useful life, reducing waste and promoting sustainability. Application : HVAC (Heating, Ventilation, and Air Conditioning): Copper plate heat exchangers are widely used in HVAC systems for both residential and commercial buildings. They efficiently transfer heat between the air and a refrigerant, allowing for effective heating or cooling. Refrigeration: Copper plate heat exchangers are utilized in refrigeration systems for applications such as refrigeration units, cold storage facilities, and refrigerated transport. They enable the transfer of heat between the refrigerant and the surrounding environment, facilitating the cooling process. Chemical Processing: Copper plate heat exchangers are employed in various chemical processing applications. They facilitate heat transfer during processes such as heating or cooling chemical reactions, condensing or evaporating liquids, and maintaining desired process temperatures. Power Generation: Copper plate heat exchangers play a crucial role in power plants, including thermal power plants and nuclear power plants. They are used to transfer heat from steam or hot water in power generation processes, contributing to efficient energy production. Food Processing: Copper plate heat exchangers are utilized in the food processing industry for applications such as pasteurization, sterilization, and cooling. They ensure efficient heat transfer while maintaining the integrity and quality of food products. Industrial Processes: Copper plate heat exchangers are employed in various industrial processes requiring heat transfer. This includes industries such as pharmaceuticals, pulp and paper, textiles, chemical manufacturing, and metal processing. Renewable Energy Systems: Copper plate heat exchangers are utilized in renewable energy systems like solar thermal systems and geothermal heat pumps. They enable efficient heat transfer in capturing and utilizing renewable energy sources. Waste Heat Recovery: Copper plate heat exchangers are employed in waste heat recovery systems to capture and utilize waste heat from industrial processes or exhaust gases. This improves overall energy efficiency and reduces energy wastage. Workshop : Diagonal Flow Brazed Plate Heat Exchanger For Central Air Conditioning Industry 0 Diagonal Flow Brazed Plate Heat Exchanger For Central Air Conditioning Industry 1 Diagonal Flow Brazed Plate Heat Exchanger For Central Air Conditioning Industry 2 Copper Material : Diagonal Flow Brazed Plate Heat Exchanger For Central Air Conditioning Industry 3 Package Area : Diagonal Flow Brazed Plate Heat Exchanger For Central Air Conditioning Industry 4

The hardening heat treatment furnace is a kind of periodic working machine, mainly used in heating treatment of small metal workpieces, chemical analysis, thermocouple checking, grinding wheel sintering, diamond sintering, smelting or purifying of the rare and precious metals and other scientific experiments. Our machines can be applied in universities and colleges, scientific research institutes, mining enterprises, quality and technology supervision agencies, and other labs. The electric heating chamber aluminum aging furnace is made by welding high- quality cold-rolled plates. The hearth is made of highly heat-resistance materials, such as refractory brick, Mullite brick or ceramic fiber. The heating parts consist of high-temperature resistance wire, silicon carbide rod or MoSi2 rod. We use lightweight bricks or silicon wool felt as insulation materials, and the surface is covered by high-temperature paint. Our box type multipurpose furnace uses PID smart meters to control the temperature, and use high precision thermocouple to ensure the accuracy of temperature adjustment, so we can provide more reliable data for the lab experiments. The heating components of our electric box furnace are all of high quality, they will last longer and serve you well.

Minimum Order: 1 bags

The 250kg iron steel stainless steel melting furnace is mainly used in smelting or melting all kinds of metal. That include iron, steel, aluminum, copper, brass, bronze, silver, gold, etc. It can also be used in the heating treatment of metal. Our electric induction metal melting furnace can be safely applied in all kinds of workplaces and even at home. You can use them at your house, in the exhibition room, in the laboratory, in your factory workshop or in your store. Main Features 1. High efficiency, you just need a few minutes to melt a small batch of metal. 2. Energy-savinig, high stability, safe. 3. 24 hours continuous work ability. 4. All-solid-state IGBT frequency conversion and function adjustment, automatic frequency conversion tracking. 5. Automatic protection against all sorts of functional deficiency to ensure equipment reliability. 6. Manually and automatically adjust to improve the heating quality of the workpiece. 7. Customizable capacity to meet your production needs. Besides high functionality and high efficiency, our blast furnace for iron ore melting can also be easily operated. The machines can pair with all sorts of crucible to melt different metal, from clay graphite crucible, magnesium oxide crucible, to silicon carbide crucible.