Home > News > Steel Billet Induction Heating Production system

Steel Billet Induction Heating Production system

May. 20, 2026

Process Introduction: Steel Billet Induction Heating Production Line

Document Type: Industrial Process Introduction

Application Industry: Metallurgy, Forging, Hot Rolling, Auto Parts

1. Product Overview

The Steel billet induction heating production line is a kind of efficient and environmentally friendly intermediate frequency induction heating equipment specially designed for solid steel billets, round bars and square billets. It is widely used for blank heating before forging, hot rolling, extrusion and piercing process. Compared with traditional gas furnaces and resistance furnaces, the induction billet heating line features fast heating speed, non-contact heating, low oxidation loss and intelligent temperature control. It has become the mainstream heating equipment for medium and large forging factories and steel processing enterprises.

Steel Billet Induction Heating Production Line

2. Applicable Workpieces & Materials

Workpiece Type: Round steel billet, square billet, continuous casting billet
Material Specification: Carbon steel, alloy steel, stainless steel, bearing steel, spring steel
Billet Size: Diameter 20mm–200mm, customized length
Heating Purpose: Forging preheating, rolling heating, upsetting, piercing, thermal forming

3. Working Principle

The steel billet induction heating line adopts IGBT induction heating power supply. After converting the alternating current into specific frequency current, the alternating magnetic field is generated inside the induction coil. The steel billet cuts the magnetic line of force to produce eddy current on the metal surface. Relying on the metal resistance, the billet realizes rapid self-heating from surface to core. By adjusting the power and frequency, the equipment can control the heating penetration depth and ensure uniform temperature inside and outside the steel billet.

Steel Billet Induction Heating Production Line

4. Complete Production Line Process Flow

4.1 Automatic Feeding & Sorting

The raw steel billets are placed on the feeding rack. The hydraulic pusher automatically pushes the billets into the conveying roller table one by one to avoid manual stacking. The photoelectric sensor realizes automatic counting and sorting to ensure regular feeding rhythm.

4.2 Continuous Induction Heating

The steel billet moves forward at a constant speed through the multi-stage induction coil. The temperature rises steadily in sections to avoid thermal shock caused by one-time rapid heating. The multi-temperature zone design ensures small temperature difference between core and surface, meeting strict forging temperature requirements.

4.3 Real-time Temperature Detection

Infrared temperature measuring probes are installed at the heating outlet to monitor the billet temperature in real time. The system automatically adjusts the output power once the temperature deviates from the set value, realizing closed-loop temperature control.

4.4 Discharging & Subsequent Processing

The heated steel billets are sent to the forging press, rolling mill or punching machine through the discharging roller table. Unqualified temperature billets will be automatically sorted out to ensure the stability of follow-up forging quality.

5. Core Equipment Composition

Intermediate Frequency Power Cabinet: IGBT high-frequency module, energy-saving and stable
Induction Heating Coil: Copper tube winding, water-cooled structure, durable and high thermal efficiency
Automatic Conveying Mechanism: Variable frequency speed regulation, adjustable feeding speed
Infrared Temperature Measuring System: Real-time temperature monitoring and data recording
Circulating Cooling System: Industrial cooling tower to ensure long-term continuous operation
PLC Intelligent Control Cabinet: One-key start, automatic alarm and fault diagnosis

Steel Billet Induction Heating Production Line

6. Process Advantages

6.1 Uniform Heating & Stable Forging Quality

The temperature difference between inside and outside of the steel billet is controlled within ±5℃. The metallographic structure is uniform without overheating or burning grain. It effectively improves the toughness and tensile strength of forged products.

6.2 Low Oxidation & Material Saving

The induction heating speed is fast, and the billet stays in high temperature for a short time. The oxide scale rate is less than 1%, which greatly reduces raw material loss compared with traditional coal furnaces.

6.3 High Energy Saving Efficiency

The thermal conversion efficiency of induction heating reaches over 90%. Compared with gas furnaces, the comprehensive energy consumption is reduced by 30%–40%. No open flame combustion, no exhaust gas emission, meeting environmental protection standards.

6.4 Easy Operation & Low Maintenance Cost

The whole line realizes automatic continuous production. Workers only need to set parameters on the touch screen. The modular structure is convenient for daily inspection and replacement of wearing parts, greatly reducing later maintenance cost.

7. Industrial Application

This steel billet induction heating machine is widely used in automotive fasteners, construction machinery forgings, petroleum pipeline accessories, hardware tools and steel rolling industry. It can realize mass continuous heating of steel billets and is an ideal supporting equipment for modern intelligent forging workshops.

Steel Billet Induction Heating Production Line

Next: New Generation Square Steel Billet Induction Heating System