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High Hydrogen Gas Bright Belt Annealing Furnace for Steel - Eco-Friendly Solution by China Suppliers and Factory

Introducing our advanced gas generator tailored for small and medium-sized cold rolling strip steel enterprises in China. Unlike traditional systems that rely on liquefied petroleum gas (LPG), coke oven gas, or mixed gases, our innovative solution utilizes block coal or coke to produce generator gas for annealing equipment, As a leading factory and supplier in the industry, we proudly offer a gas generator that operates without smoke and pollution. It is equipped with automatic dust removal and tar removal functions, ensuring zero pollution and no black smoke emissions. Experience a cleaner, more efficient production process with our specialized equipment designed to meet the needs of modern steel enterprises

    Product Introduction

    The bright belt annealing furnace is an advanced industrial equipment used for non-oxidative heat treatment of metal coils, pipes, wires, etc. in a protected atmosphere or vacuum environment. Its core objective is to eliminate internal stress in the material, improve mechanical properties, while maintaining the original bright surface of the metal and avoiding the formation of oxide scales and decarburization layers.

    Core Principles and Characteristics

    The core principle is to isolate oxygen. The workpiece is placed inside a sealed inner cover, evacuated or filled with high-purity inert/reducing protective gases (such as a nitrogen-hydrogen mixture), and then heated through the outer cover. The main features of this equipment include:

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    Uniformity & Precise Temperature Control

    Utilizing strong convective circulation technology, the temperature difference within the furnace can be kept within ±5℃, ensuring uniform material properties. The entire process is automatically controlled by a computer, which is precise and reliable.

    High Production Efficiency

    The "double furnace base" design is commonly adopted. When one furnace base is in heating mode, the other can be cooled and loaded, enabling quasi-continuous production. The loading capacity of a single furnace can reach 30 tons.

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    Green & Environmentally Friendly

    After annealing, the surface is bright and free of oxidation, eliminating the need for traditional acid washing. This fundamentally solves the problems of acid pollution and wastewater treatment.

    🔩 Application Scope

    This equipment is applicable to a variety of metal materials and is mainly divided into two categories:

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    Non-Ferrous Metals

    Finished bright annealing of copper and copper alloys, aluminum alloys, and other non-ferrous metal materials.

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    Ferrous Metals

    Intermediate or finished annealing of coil and wire products such as stainless steel, silicon steel, ordinary carbon steel, alloy steel, etc.

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    Full Automatic Control System: Controls and manages the whole process of heating, heat preservation, and cooling of each hood furnace, providing reliable guarantee for the production of users. Secondary air inlet and saturated steam are used to convert coal into carbon monoxide gas and feed it into a covered furnace for combustion and heating. The proportion of air intake and steam to coal seam is automatically controlled by PLC system, and slag is automatically discharged.

    Frequently Asked Questions

    Q1 What is the primary purpose of a bright belt annealing furnace?
    The primary purpose of a bright belt annealing furnace is to perform non-oxidative heat treatment on metal coils, pipes, and wires within a protected atmosphere or vacuum environment. It eliminates internal stress, improves mechanical properties, and preserves the bright, oxide-free surface of the metal — avoiding the formation of oxide scales and decarburization layers.
    Q2 How does the furnace prevent oxidation during the annealing process?
    The furnace isolates oxygen by placing the workpiece inside a sealed inner cover, which is either evacuated or filled with high-purity inert or reducing protective gases — typically a nitrogen-hydrogen mixture. Heating is then applied through the outer cover, ensuring no contact between the metal surface and ambient oxygen throughout the entire process.
    Q3 What is the temperature uniformity achievable inside the furnace?
    By utilizing strong convective circulation technology and a fully automated computer control system, the temperature difference within the furnace can be maintained within ±5℃. This high degree of uniformity ensures consistent material properties across the entire batch being processed.
    Q4 What metals and alloys are compatible with this annealing furnace?
    The bright belt annealing furnace is compatible with both non-ferrous and ferrous metals. Non-ferrous applications include copper, copper alloys, and aluminum alloys. Ferrous applications include stainless steel, silicon steel, ordinary carbon steel, and alloy steel — covering a wide range of coil and wire products for intermediate or finished annealing.
    Q5 Does using this furnace eliminate the need for acid washing after annealing?
    Yes. Because the annealing process takes place in a sealed, oxygen-free environment, the metal surface remains bright and completely free of oxidation after treatment. This eliminates the need for the traditional acid washing (pickling) process, fundamentally solving the associated issues of acid pollution and industrial wastewater treatment.
    Q6 How does the "double furnace base" design improve production efficiency?
    The double furnace base design allows one furnace base to be in active heating mode while the other is simultaneously undergoing cooling and loading operations. This staggered workflow enables quasi-continuous production, significantly reducing downtime between cycles. With a single furnace loading capacity of up to 30 tons, overall production efficiency is greatly enhanced compared to single-base configurations.