About HLQ Induction Equipment
HLQ Induction Equipment Co., Ltd. is an engineering-focused induction heating equipment manufacturer in China, providing industrial induction heating machines, induction melting furnaces, induction hardening systems, induction brazing machines, induction forging heaters, induction PWHT systems, air-cooled induction heaters and customized electromagnetic heating solutions. With more than 15 years of experience in induction heating equipment manufacturing and application development, HLQ supports customers in metal heat treatment, brazing, welding, forging, melting, preheating, shrink fitting, coating removal, pipeline heating, reactor heating and non-ferrous metal recycling. Our goal is to help global manufacturers improve heating efficiency, reduce energy consumption, stabilize process quality and build safer, cleaner production lines.
Who We Are
HLQ Induction Equipment Co., Ltd. specializes in the
design, manufacturing and application support of induction heating machines and electro-vacuum atmosphere furnaces. The company serves customers who need reliable heating equipment for industrial production, metal processing, equipment maintenance, foundry operation, welding preparation, thermal assembly and customized heating processes.
Unlike suppliers that only sell standard machines, HLQ focuses on engineering-based solutions. Every induction heating project starts from the customer’s material, workpiece size, target temperature, heating time, production rhythm, installation space, power supply condition and process objective. Based on these details, we help customers select the proper power, frequency, induction coil, cooling method, fixture, control system and automation level.
Our equipment range includes high frequency, super-audio frequency, medium frequency and ultra-high frequency induction heating systems. According to the existing company information, HLQ offers transistor converters from approximately 500Hz to 2.0MHz and IGBT power sizes from 5kW to 5000kW, covering a wide range of industrial heating requirements.
What We Manufacture
HLQ manufactures and supplies induction heating equipment for both standard applications and custom-engineered heating projects. Our product line is designed to serve small workshops, medium-sized factories, large industrial plants, maintenance contractors, foundries, pipe fabrication companies, automotive suppliers, mining equipment recyclers, chemical equipment manufacturers and metal processing facilities.
| Product Category | Main Applications | Typical Industries |
|---|---|---|
| Induction Brazing Machines | Copper tube brazing, brass joint brazing, carbide tool brazing, HVAC parts brazing | HVAC, refrigeration, tools, automotive, electrical parts |
| Induction Hardening Machines | Shaft hardening, gear hardening, pin hardening, bearing race hardening, surface heat treatment | Machinery, automotive, mining, agriculture, power transmission |
| Induction Forging Heaters | Steel bar heating, billet forging, aluminum billet heating, brass extrusion heating | Forging plants, extrusion plants, fastener factories, metal forming lines |
| Induction Melting Furnaces | Aluminum, copper, brass, bronze, steel, iron and precious metal melting | Foundries, recycling plants, metal casting workshops, laboratories |
| Induction PWHT Systems | Post weld heat treatment, pipe weld preheating, stress relieving, field heating | Oil and gas, pressure vessels, pipelines, boilers, shipbuilding |
| Air-Cooled Induction Heaters | Pipeline preheating, coating removal, field maintenance, equipment repair | Construction, pipeline service, steel structure, offshore maintenance |
| Custom Induction Heating Systems | Reactor heating, waste oil heating, mill liner recycling, thermal oil heating, steam superheating | Chemical, petrochemical, recycling, energy, environmental equipment |
Our Engineering Philosophy
Induction heating is not only an electrical product; it is a complete thermal process. A successful system must match the power supply, frequency, coil design, material properties, heat transfer path, fixture, cooling system and control logic. HLQ’s engineering philosophy is to design induction equipment around the actual heating result, not only around machine power.
| Engineering Factor | Why It Matters | HLQ Approach |
|---|---|---|
| Material | Steel, copper, aluminum, brass, graphite and stainless steel respond differently to induction heating. | Select suitable frequency, power density and heating method according to material behavior. |
| Workpiece Size | Diameter, wall thickness, weight and geometry affect heating depth and cycle time. | Design coil shape and power level based on real workpiece dimensions. |
| Target Temperature | Brazing, forging, melting, hardening and PWHT require different temperature windows. | Match heating curve, temperature control and process monitoring. |
| Heating Time | Cycle time affects production capacity and energy consumption. | Calculate power margin and heating efficiency before final model selection. |
| Coil Design | The induction coil determines magnetic field distribution and heating uniformity. | Provide customized coil design for special parts and production processes. |
| Cooling System | Stable cooling protects the power supply, coil and capacitor components. | Recommend water-cooled or air-cooled solutions according to site conditions. |
| Automation | Repeatability depends on stable process control. | Offer manual, semi-automatic and PLC-controlled systems. |
Main Induction Heating Applications
HLQ induction heating equipment is used in many industrial heating processes where fast, clean, localized and controllable heating is required. Compared with flame heating, resistance heating or conventional furnaces, induction heating can often provide higher energy efficiency, shorter heating time, cleaner operation and better temperature repeatability.
| Application | Typical Process | Equipment Solution |
|---|---|---|
| Induction Brazing | Heating copper, brass, carbide, stainless steel or aluminum joints with brazing filler | High frequency or super-audio frequency induction brazing machine |
| Induction Hardening | Surface hardening of shafts, gears, pins, sprockets and guide rails | CNC hardening machine with customized induction coil and quenching system |
| Induction Forging | Heating billets, rods, bars and blanks before forging or extrusion | Medium frequency billet heating system with automatic feeding |
| Induction Melting | Melting aluminum, copper, brass, bronze, steel, iron and precious metals | Coreless induction melting furnace with manual or hydraulic tilting |
| Induction PWHT | Post weld heat treatment and stress relieving of welded joints | Flexible cable induction heating system with temperature recorder |
| Induction Preheating | Pipe weld preheating, steel plate preheating and component heating | Air-cooled or water-cooled induction heating system |
| Shrink Fitting | Heating gears, bearings, rings, rotors and sleeves for assembly | Induction shrink fitting heater with precise temperature control |
| Coating Removal | Heating steel substrate to remove paint, coating or bonded layers | Portable induction coating removal system |
| Reactor and Pipeline Heating | Heating vessels, pipes, fluids, thermal oil or process materials | Customized electromagnetic induction thermal system |
Industries We Serve
HLQ equipment is designed for industrial users who need stable heating performance, continuous production capability and practical engineering support. Our solutions can be used in both factory production lines and field maintenance environments.
| Industry | Typical Requirement | HLQ Solution |
|---|---|---|
| Automotive Manufacturing | Brazing, hardening, shrink fitting, heat treatment | Induction brazing systems, hardening scanners and assembly heaters |
| Metal Forging and Forming | Fast billet heating before forging, extrusion or rolling | Continuous induction billet heating systems |
| Foundry and Recycling | Melting aluminum, copper, brass, bronze, steel and iron | Medium frequency induction melting furnaces |
| Oil and Gas | Pipeline preheating, PWHT, coating removal and flow assurance heating | Portable induction heating systems and custom pipe heating solutions |
| Mining and Heavy Equipment | Hardening, brazing, mill liner recycling and equipment repair | Induction hardening, heating and separation systems |
| Chemical and Petrochemical | Reactor heating, thermal oil heating and process pipe heating | Custom electromagnetic induction heating systems |
| Electrical and HVAC | Copper tube brazing, contact brazing and connector heating | High frequency induction brazing machines |
| Energy and Environmental Equipment | Waste oil heating, steam superheating, metal recovery and recycling | Customized induction heating and thermal processing equipment |
Why Customers Choose HLQ
Customers choose HLQ because we combine induction power supply manufacturing, coil design, process engineering and application experience. Many induction heating problems cannot be solved by a standard machine alone. The real solution often requires a suitable coil, correct frequency, stable cooling, accurate temperature control and good fixture design.
| Reason | Customer Benefit |
|---|---|
| More than 15 years of industry experience | Practical understanding of brazing, hardening, forging, melting and custom heating processes. |
| Wide product range | One supplier for high frequency, medium frequency, air-cooled, water-cooled and custom systems. |
| Engineering-based model selection | Machines are selected according to real material, temperature, time and production requirements. |
| Customized induction coils | Better heating uniformity, higher efficiency and improved process repeatability. |
| Industrial-grade control and protection | Self-control and self-protection functions help improve safety and reliability. |
| Global application support | Support for overseas customers, distributors, OEM projects and custom production lines. |
| Focus on energy saving and clean heating | Helps customers reduce fuel use, open flame risk, smoke and workshop pollution. |
Our Custom Solution Process
For customized induction heating projects, HLQ follows a clear engineering process. This helps customers avoid incorrect model selection, insufficient power, poor coil design or unstable heating results.
| Step | What We Do | Information Needed from Customer |
|---|---|---|
| 1. Application Review | Understand the heating purpose and production target. | Material, workpiece drawing, weight, size and heating objective. |
| 2. Process Calculation | Estimate required energy, heating time, temperature range and power margin. | Initial temperature, target temperature, cycle time and output requirement. |
| 3. Model Selection | Select suitable power, frequency, cooling type and control method. | Site voltage, frequency, transformer capacity and installation conditions. |
| 4. Coil and Fixture Design | Design coil geometry and mechanical support according to the workpiece. | Workpiece photos, drawings or samples. |
| 5. System Proposal | Provide equipment configuration, technical parameters and optional automation. | Required production mode: manual, semi-automatic or automatic. |
| 6. Manufacturing and Testing | Build equipment and test key functions before delivery. | Confirmation of technical requirements and operation conditions. |
| 7. Installation Support | Provide guidance for wiring, cooling, operation and maintenance. | Workshop layout, utilities and operator training needs. |
Engineering Capabilities
HLQ supports both standard induction heating equipment and special heating systems. Our engineering capability covers electrical power design, induction coil design, heating process optimization, thermal layout planning, cooling system matching and automation integration.
| Capability | Description |
|---|---|
| Power Supply Selection | Selection of IGBT or medium-frequency power supplies according to heating depth, cycle time and load condition. |
| Induction Coil Design | Customized single-turn, multi-turn, split, channel, pancake, flexible cable or special-shaped coils. |
| Thermal Process Design | Heating time calculation, temperature rise estimation, heat loss analysis and power margin recommendation. |
| Cooling System Matching | Water chiller, cooling tower, closed-loop cooling or air-cooled system configuration. |
| Automation Integration | PLC control, temperature monitoring, recipe control, alarm system and production data recording. |
| Application Development | Custom heating solutions for new materials, special workpieces and non-standard industrial processes. |
Quality and Reliability
Industrial induction heating equipment must operate safely under high current, high temperature, cooling water circulation and continuous production conditions. HLQ pays attention to electrical protection, mechanical structure, coil insulation, cooling stability and process reliability.
The current company page states that HLQ pays attention to research and development as well as after-sales service, and that the company follows ISO9000-2000 processing requirements. This should be presented more clearly as a quality management and customer support advantage on the About Us page. [oai_citation:2‡dw-inductionheater.com](https://dw-inductionheater.com/about-us)
| Quality Focus | Practical Meaning |
|---|---|
| Electrical Protection | Overcurrent, overvoltage, water shortage, phase loss and overheating protection help improve equipment safety. |
| Cooling Protection | Stable cooling protects the induction coil, capacitor and power electronics. |
| Coil Insulation | Good insulation design reduces short-circuit risk and improves coil service life. |
| Process Testing | Testing helps confirm machine function before delivery and reduces commissioning risk. |
| After-Sales Support | Operation guidance, spare parts support and troubleshooting help customers maintain stable production. |
Typical Equipment Parameters
HLQ induction heating equipment can be selected according to different frequency ranges, heating depths and production processes. The following table is a general reference. Final parameters should be confirmed according to the actual workpiece and application.
| Equipment Type | Typical Power Range | Typical Frequency Range | Common Applications |
|---|---|---|---|
| High Frequency Induction Heater | 5-200kW | 30-200kHz or higher | Brazing, small part hardening, thin surface heating |
| Super-Audio Frequency Induction Heater | 30-300kW | 10-50kHz | Medium-depth hardening, brazing, shaft heating |
| Medium Frequency Induction Furnace | 100-2000kW or customized | 500Hz-10kHz | Forging, melting, large workpiece heating |
| Air-Cooled Induction Heater | Customized | Application dependent | PWHT, pipe preheating, coating removal, field maintenance |
| Custom Electromagnetic Heating System | Customized | Application dependent | Reactor heating, thermal oil heating, steam superheating, recycling systems |
Applications by Material
| Material | Induction Heating Applications | Engineering Notes |
|---|---|---|
| Carbon Steel | Forging, hardening, annealing, preheating, PWHT | Good magnetic coupling below Curie temperature; widely used for induction heating. |
| Stainless Steel | Brazing, annealing, shrink fitting, reactor heating, pipe heating | Requires correct frequency and coil design for efficient heating. |
| Copper and Brass | Brazing, melting, annealing, shrink fitting | High conductivity requires suitable power and frequency selection. |
| Aluminum | Billet heating, melting, brazing and heat treatment | Requires proper coil design because aluminum is non-magnetic and highly conductive. |
| Graphite | High-temperature furnace heating, crucible heating, special thermal systems | Useful for indirect heating of non-metallic or corrosive materials. |
| Nickel-Based Alloys | Melting, heat treatment, brazing, high-temperature processing | Often requires controlled atmosphere or vacuum for high-quality applications. |
Global Supply and Support
HLQ supplies induction heating equipment to customers in different countries and industries. For international projects, we support voltage customization, English technical communication, export packaging, remote installation guidance and spare parts recommendations.
Why Induction Heating?
Induction heating is widely used because it can heat metal rapidly, locally and without direct flame contact. It is suitable for modern factories that require cleaner heating, faster temperature rise, precise energy control and easy automation. For many metal heating processes, induction heating can reduce open flame risk, improve working conditions and help stabilize production quality.
| Compared Item | Induction Heating | Traditional Flame or Furnace Heating |
|---|---|---|
| Heating Speed | Fast and localized | Usually slower and less focused |
| Temperature Control | Easy to control by power and time | More dependent on operator experience |
| Working Environment | Cleaner, no direct combustion at the heating point | May create flame, smoke, gas and heat radiation |
| Automation | Easy to integrate with PLC and production lines | Often more difficult to automate precisely |
| Energy Use | Energy is delivered directly to the workpiece area | More heat may be lost to surroundings |
| Process Repeatability | High when coil, fixture and control system are well designed | May vary more with operator and flame condition |
Frequently Asked Questions
1. What does HLQ Induction Equipment manufacture?
HLQ manufactures induction heating machines, induction brazing systems, induction hardening machines, induction forging heaters, induction melting furnaces, induction PWHT systems, air-cooled induction heaters and customized electromagnetic heating systems for industrial applications.
2. How many years of experience does HLQ have?
The current company information states that HLQ has more than 15 years of experience in induction heating machines and electro-vacuum atmosphere furnace manufacturing and marketing. [oai_citation:4‡dw-inductionheater.com](https://dw-inductionheater.com/about-us)
3. Can HLQ design customized induction heating systems?
Yes. HLQ can design customized systems according to material, workpiece size, heating temperature, production capacity, cycle time, installation conditions and automation requirements. Custom projects may include special coils, fixtures, cooling systems and PLC controls.
4. What information should I provide for model selection?
Please provide the material, workpiece size and weight, heating temperature, heating time, production quantity, available power supply, cooling water condition, photos or drawings of the workpiece, and whether manual or automatic operation is required.
5. What industries use HLQ induction heating machines?
HLQ machines are used in automotive, metal forging, foundry, copper and aluminum recycling, HVAC, oil and gas, pipeline construction, pressure vessel manufacturing, mining equipment, chemical equipment, electrical components and general machinery manufacturing.
6. Can induction heating replace gas or flame heating?
In many brazing, forging, hardening, preheating, shrink fitting and melting applications, induction heating can replace or improve traditional flame and gas heating. The final decision depends on material, temperature, workpiece geometry, production capacity and investment budget.
Contact HLQ for an Induction Heating Solution
If you are looking for an induction heating machine manufacturer, induction furnace supplier or customized electromagnetic heating solution, HLQ can help you evaluate the correct equipment configuration for your process. Send us your material, workpiece size, heating temperature, required cycle time and production capacity. Our engineering team will recommend a suitable power supply, frequency, coil design, cooling system and control method.
HLQ Induction Equipment Co., Ltd.
Induction Heating Machine Manufacturer in China
Email: sales@dw-inductionheater.com
Tel / WhatsApp: +86-13155965571
Address: Jiangbei Village, Wusha Area, Chang’an Town, Dongguan City, Guangdong Province, China
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