Product Overview
Induction Quenching and Tempering System, also known as induction Q&T heat treatment line, is a fully automated continuous induction heat treatment solution that integrates induction austenitizing, spray quenching, online induction tempering and finished cooling in one production unit. It adopts electromagnetic induction heating principle to rapidly heat steel workpieces to quenching temperature, then performs precise spray quenching to form martensite structure, followed by online low-temperature induction tempering to eliminate residual stress, reduce brittleness and enhance workpiece toughness and ductility, realizing one-stop quenching & tempering treatment for metal parts.
Compared with traditional box furnace or continuous furnace heat treatment, induction quenching and tempering features fast heating speed, selective heating, minimal oxidation, small workpiece distortion and low energy consumption. It is widely used for bulk heat treatment of carbon steel, alloy steel, structural steel bars, solid shafts, seamless tubes, drill pipes and OCTG pipes, delivering consistent metallurgical structure and stable mechanical properties for mass manufacturing.
Working Principle
Induction Austenitizing: Medium/high frequency power supply generates alternating electromagnetic field. The workpiece produces eddy current for rapid non-contact heating up to austenitizing temperature, with fast temperature rise and short holding time.
Precision Spray Quenching: Immediate controlled spray quenching after reaching target temperature to obtain hard martensite phase and achieve required surface hardness.
In-line Induction Tempering: Continuous low-temperature induction heating below phase transition point to relieve quenching stress, improve impact toughness and prevent delayed cracking, without large drop of target hardness.
Cooling & Discharging:Cool treated parts to ambient temperature, automatic conveying and discharging, ready for next process.
Core Features & Advantages
High Production Efficiency & Continuous Operation Continuous feeding & discharging design, adjustable line speed. Heating completes in seconds instead of hours in traditional furnaces, suitable for 24h mass production, greatly shortening production cycle and increasing throughput.
Precise Temperature & Process Control Equipped with IGBT power source, PLC + HMI touch screen, infrared pyrometer closed-loop temperature monitoring. Heating power, conveying speed, quenching flow and tempering temperature can be preset according to steel grade, workpiece dimension and hardness requirement, ensuring repeatable heat treatment results and low part-to-part deviation
Small Distortion & Low Oxidation Localized rapid heating reduces overall thermal expansion; short high-temperature holding time minimizes surface decarburization and oxidation. Workpieces maintain good dimensional accuracy, lower scrap rate and less post-processing grinding workload.
Energy Saving & Environment Friendly Energy directly acts on workpiece instead of heating the whole furnace chamber, high thermal efficiency, lower power consumption than furnace heat treatment. No open flame, less waste gas emission, clean workshop environment.
Modular & Customizable Structure Horizontal / vertical type optional. Induction coils, power rating, conveyor, quenching system can be customized based on workpiece size, bar diameter, pipe wall thickness and output demand. Easy integration with upstream and downstream production lines.
Stable Metallurgical Performance Uniform hardness layer, balanced strength and toughness after Q&T treatment. Effectively improves wear resistance, tensile strength and fatigue life of steel components.
Application & Processed Workpieces
Workpiece Types: Solid steel bars, alloy bars, transmission shafts, axle shafts, seamless steel tubes, welded pipes, oil casing, drill rods, sucker rods, fasteners, construction machinery pins and track links.
Applicable Industries:
Automotive industry: crankshaft, camshaft, axle, gear shaft, heavy-duty auto structural parts
Oil & Gas: OCTG casing, drill pipe, sucker rod
Mining & Construction Machinery: high-strength pins, track chain, hydraulic cylinder rods
Steel processing factory: steel bar and pipe heat treatment service
Railway & heavy equipment: high load structural steel components
Material Range: Carbon steel, medium carbon alloy steel, alloy structural steel, boron steel etc.
FAQ
01.What is induction quenching and tempering?
02.What is the difference between induction Q&T and furnace quenching tempering?
03.Can you customize induction quenching tempering line?
04.What mechanical properties can be achieved after induction quenching and tempering?
why choose us
✅ Advanced IGBT induction heating technology, high power factor and energy-saving, reduce your production cost.
✅ Wide power & frequency range, support custom design to match your working process: metal quenching, brazing, forging, melting, heat treatment.
✅ Complete protection functions: over-current, over-voltage, over-temperature, water shortage protection for safe operation.
✅ Each unit undergoes full performance inspection before delivery to guarantee stable continuous running.
✅ ISO9001 certified, stable quality for long-time industrial operation.
✅ Experienced engineering team: quick technical consultation, operation guidance, remote troubleshooting and after-sale service.
✅ Flexible order terms, fast lead time and professional packaging for sea shipment.
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