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1100℃ high temperature continous tunnel furnace oven kiln.png

1100 Cesius High Temperature Nitrogen Continous Tennel Furnace Oven Kiln

In the field of industrial heat treatment, 1100°C is a critical temperature node—it avoids the equipment and material challenges posed by ultra-high temperatures (greater than 1600°C) while meeting the sintering, annealing, or curing requirements of most medium-sized materials, such as electronic ceramics, powder metallurgy components, and specialty glass. As the core equipment for continuous heat treatment in this temperature range, the 1100°C high-temperature tunnel furnace, with its stable and controllable characteristics, has become a standard feature in the electronics, metallurgy, and materials industries.

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    Technical Parameters
    Structure and Operating Principle
    Definition and Core Value of an 1100°C High-Temperature Tunnel Furnace
    Material Selection

    Core Structure

    1. Core Structure

    Furnace: Constructed of high-temperature-resistant materials (such as 80mm thick insulation and SUS310S stainless steel), the furnace body features a narrow internal heating channel and is rust-resistant with a paint finish on the exterior.

    Heating System:

    Heating Elements: 0Cr27Al7M02 high-temperature resistance wire is used for temperatures below 1000°C; silicon carbide rods (resistant to 1450°C) or silicon-molybdenum rods (resistant to 1750°C) are optional for higher temperatures.

    Layout: Heat is evenly distributed along the length of the furnace body, transferring heat through radiation, convection, and conduction.

    Conveyor: Teflon mesh belt or SUS310S stainless steel mesh belt, resistant to high temperatures and corrosion, ensuring continuous and uniform material transport.

    Temperature Control System:

    Sensor: Thermocouple array monitors temperature in real time.

    Control Algorithm: A dynamic PID parameter fine-tuning model combines fuzzy control with a neural network to achieve a temperature control accuracy of ±1.5°C.

    Execution Layer: Temperature stability is ensured by adjusting heating element power and conveyor speed. 2. Workflow

    The material enters the furnace via a conveyor belt, undergoes drying, curing, or sintering at a preset temperature, and is then discharged from the discharge port. The cooling section uses air cooling to accelerate temperature reduction, while an exhaust system minimizes heat loss.

     

    Core Value

    An 1100°C high-temperature tunnel furnace is an industrial furnace that uses a tunnel-like structure to achieve continuous material conveying and heat treatment at 1100°C ±5°C (typical temperature control accuracy). Its core characteristic is "medium-high temperature continuity": materials (or carrier trays) are transported at a constant speed through the furnace chamber via a drive system. The furnace chamber is divided along its length into functional sections: a preheating zone (200-400°C), a heating zone (400-1100°C), a holding zone (1100°C ±5°C), and a cooling zone (1100-200°C). Each zone is independently temperature-controlled, creating a precise gradient thermal environment. Compared to traditional batch-type box furnaces, its advantages lie in three aspects:

     

    First, large-scale production efficiency. For example, for the sintering of electronic ceramics (such as MLCC dielectric layers), a single 1100°C tunnel furnace can process 5,000-10,000 pieces per day, 5-8 times that of a box furnace, significantly reducing energy consumption and labor costs per unit product. Second, process consistency and stability. Through zoned temperature control (temperature difference between zones ≤ ±3°C), precise drive speed adjustment (error < ±0.1m/min), and atmosphere uniformity control (oxygen content fluctuation within the furnace < ±2%), the thermal history (heating rate, holding time, and cooling curve) of the same batch of materials is highly consistent, significantly improving product qualification rates (for example, the MLCC sintering qualification rate has increased from 85% in a box-type furnace to over 95%).

     

    Third, energy efficiency and environmental advantages. The 1100°C temperature range falls within the medium-high temperature range, eliminating the need for high-cost heating elements (such as graphite rods or tungsten-molybdenum products) required in ultra-high temperature furnaces (>1600°C). Furthermore, waste heat recovery (for example, using exhaust gas from the furnace tail to preheat the combustion air) can reduce energy consumption by 20%-30%. The enclosed structure, combined with an exhaust gas treatment system (dust removal and denitrification), reduces emissions of pollutants such as dust and NOx, meeting the green manufacturing requirements of the "dual carbon" goals.

    Material Selection

    1. Furnace Body Material

    Chromium-manganese-nitrogen casting: Contains chromium, manganese, and nitrogen, offering excellent creep and oxidation resistance, suitable for temperatures up to 1000°C.

    Stainless Steel: The inner chamber is made of SUS316S#, while the outer chamber is cold-bent to ensure corrosion resistance and structural stability.

    1. Conveyor Belt

    SUS310S stainless steel mesh belt: High-temperature (1100°C) and corrosion-resistant, suitable for high-temperature environments.