Preheating Furnace – Product Description
Preheating Furnace – Product Description - Image 2

Preheating Furnace – Product Description

The preheating furnace is an industrial heating device designed to heat workpieces or materials to a specified temperature before further processing or heat treatment. It uses electric heating, gas heating, or hot air circulation to preheat metals, molds, billets, and other materials, improving their ductility, stability, and bonding performance during subsequent operations. Widely used in forging, casting, extrusion, heat treatment, pre-welding heating, coating, and other industrial fields.

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Order now to upgrade your thermal processing with stable and efficient preheating!

Key Features

  • Precise Temperature Control
    Equipped with advanced PID temperature controllers and imported sensors, ensuring high accuracy with temperature control precision up to ±1 °C.

  • Fast & Even Heating
    Optimized heating element layout and high-efficiency hot air circulation system ensure uniform temperature distribution inside the chamber, with no hot spots.

  • Durable Construction
    The furnace body is welded with thick steel plates and lined with high-density insulation bricks and ceramic fibers, resistant to high temperatures and corrosion—ideal for heavy-duty industrial environments.

  • User-Friendly & Safe
    Features a touch-screen interface, with built-in safety protections such as over-temperature alarms, overload protection, and auto shutoff.

  • Multiple Heating Options
    Available with electric heating, gas heating (natural gas or LPG), and infrared heating, depending on your application requirements.

  • Customizable Design
    Supports customization of chamber size, number of heating zones, loading method (e.g., trolley type, hoisting type, or rail-mounted), and other parameters to meet your specific needs.

Technical Specifications

Item Range / Options
Operating Temperature Ambient to 300 °C / 500 °C / 800 °C / 1000 °C (customizable)
Chamber Size 800×600×600 mm to 3000×2000×1500 mm (customizable)
Heating Method Electric / Natural Gas / LPG / Infrared
Temperature Accuracy ±1 °C to ±3 °C (based on control system)
Heating Element Resistance wire / Heating tube / Burner
Control System Digital controller / PLC with touchscreen
Furnace Body Structure Steel shell + insulation cotton + stainless steel liner
Safety Functions Over-temperature alarm, power-off protection, delayed start, fault diagnostics
Power Supply AC 380V / 50Hz (3-phase, 5-wire)

Typical Applications

  • Forging Industry: Billet preheating to improve forgeability

  • Casting Processes: Mold or sand core preheating to prevent cold shuts

  • Heat Treatment Prep: Relieve internal stress and improve uniformity

  • Welding Applications: Preheating steel plates to prevent cracks

  • Coating Lines: Preheating parts before painting to improve adhesion and curing

  • Extrusion Lines: Preheating aluminum profiles or plastics for better forming

Installation & Maintenance

  1. Installation

    • Place the unit on a level, well-ventilated surface free from flammable materials;

    • Verify that the power supply matches the nameplate before wiring; ensure proper grounding;

    • Run a no-load test and calibrate the temperature control system before production use.

  2. Maintenance

    • Regularly clean the furnace chamber and remove dust or debris from heating elements;

    • Check the temperature controller, thermocouples, and relays for normal function;

    • Every 6 months, inspect wiring terminals, insulation layers, and door seals for aging or loosening.

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