Product Overview

This product adopts a vertical integrated structure design, with the furnace body arranged vertically. It features small floor area, concentrated heat, and is equipped with a mature medium frequency power control system, delivering uniform heating and low metal oxidation loss. It is suitable for industrial processing scenarios such as bar through heating, pre-forging heating, pipe fitting heat treatment, and local heating of profiles.

The complete set of vertical longitudinal medium frequency induction heating equipment is composed of medium frequency power cabinet (KGPS/IGBT optional), compensating capacitor bank, vertical induction furnace body, water cooling system, up and down feeding mechanism, temperature control and detection box, console and other components. It is mostly used for overall or local heating of steel, iron, copper, aluminum, alloy bars, round steel and pipes, featuring fast heating speed, controllable temperature, uniform workpiece heating and low metal burning loss, and is compatible with continuous heat treatment production lines for single/batch long profiles.

Non-standard equipment with different power, furnace chamber sizes and conveying speeds can be customized according to the diameter, length, heating temperature and production capacity requirements of workpieces.

Core Features

• High space utilization: With vertical longitudinal layout, the equipment occupies less horizontal space, which facilitates connection with production lines and fits production workshops with limited factory space.
• Reasonable energy consumption control: Adopting medium frequency variable frequency heating technology, it has low electric energy conversion loss. Compared with traditional gas and resistance heating equipment, its energy consumption is significantly optimized; the closed furnace chamber structure reduces heat leakage and lowers high temperature in the workshop.
• Uniform and stable heating: Induction coils are arranged longitudinally around the workpiece, resulting in small radial and axial temperature difference of long profiles, avoiding local overheating and overburning, and ensuring consistent quality of forging and heat treatment workpieces.
• Complete magnetic shielding configuration: The furnace body is equipped with a magnetic shielding structure, which reduces magnetic field leakage, lowers electromagnetic interference, and improves the operation stability of the power supply and surrounding electronic control equipment.
• Digital intelligent control: Equipped with an integrated digital control system, heating power, heat preservation time and conveying speed can all be adjusted. It has a built-in real-time temperature acquisition module, which facilitates standardized process control.
• Long-term water cooling protection: The induction coil and furnace body frame are equipped with circulating water cooling structure, which continuously takes away operating heat, slows down coil aging, and extends the continuous operation time of the equipment.
• Multi-specification customization service: Furnace length, power and automatic loading and unloading mechanism can be customized according to workpiece material, outer diameter, length and heat treatment process.
• Automatic loading and unloading: Equipped with a vertical conveying mechanism, the vertical feeding and discharging of workpieces is smooth. It can connect with forging presses and quenching tanks to realize continuous automatic production.
• Flexible and convenient startup: It supports no-load startup, no preheating of the furnace body is required, adjustment for production and specification change is simple, and it is suitable for alternate processing of multiple varieties of workpieces.

Working Principle

The vertical longitudinal medium frequency induction heating furnace operates based on the principle of electromagnetic induction heating, following the law of electromagnetic induction e=W*-dΦ/dt. The medium frequency power supply converts power-frequency alternating current into medium-frequency alternating current, which is fed into the vertically wound induction coil to generate an alternating magnetic field; the magnetic field passes vertically through the metal workpiece in the furnace chamber, inducing eddy currents inside the workpiece. Joule heat is generated by the metal's own resistance, heating the workpiece uniformly from the inside out to complete the through heating and heat treatment processes. The entire heating process does not require an external heat source, featuring fast heating response and good thermal efficiency performance.

Technical Parameters

• Rated applicable workpiece specification: Customized according to customer's workpiece size
• Heating capacity: Non-standard design available according to production line requirements
• Working frequency: Adjustable within 1–8kHz, customization supported
• Temperature control range: Adjustable from room temperature – 1300℃ (customizable)

Applicable Scenarios

It is widely used in industries such as through heating of forgings, heat treatment of round steel bars, heating of copper and aluminum pipes, hot upsetting of standard parts, quenching and tempering of shafts, thermoforming of hardware profiles, preheating of scrap metals and other fields.

Technical Parameters of Vertical Medium Frequency Induction Heating Furnace