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High Hydrogen Gas Annealing Furnace for Steel - Eco-Friendly Technology by China Suppliers and Factory

Introducing our innovative gas generator, specifically 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 gas, our solution utilizes block coal or coke to produce generator gas, perfect for annealing equipment, As a leading manufacturer and supplier in the industry, our gas generator stands out with its smokeless operation and zero pollution. With advanced features including automatic dust removal and tar removal, you can trust our equipment to ensure a clean and efficient production environment, free from harmful emissions. Choose our factory for environmentally friendly solutions that enhance your steel processing operations in China

    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 computer — 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. Single furnace loading capacity reaches 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:

    🟡 Non-Ferrous Metals
    • Copper and copper alloys
    • Aluminum alloys
    • Finished bright annealing applications
    ⚙️ Ferrous Metals
    • Stainless steel
    • Silicon steel
    • Ordinary carbon steel & alloy steel
    • Coil and wire — intermediate or finished annealing

    🖥️ Full Automatic Control System: Controls and manages the entire process of heating, heat preservation, and cooling of each hood furnace, providing a reliable guarantee for user production.

    🔥 Efficient Combustion Technology: Secondary air inlet and saturated steam are used to convert coal into carbon monoxide gas, which is fed into the covered furnace for combustion and heating. The proportion of air intake and steam to coal seam is automatically controlled by the PLC system, and slag is automatically discharged.

    Frequently Asked Questions
    Q1 What is the main purpose of a bright belt annealing furnace?
    The bright belt annealing furnace is designed to perform non-oxidative heat treatment on metal coils, pipes, and wires. Its primary goal is to eliminate internal stress, improve mechanical properties, and maintain the metal's bright, oxide-free surface without the need for post-annealing acid washing.
    Q2 How does the furnace prevent surface oxidation during heat treatment?
    The workpiece is placed inside a sealed inner cover, which is either evacuated or filled with high-purity inert or reducing protective gases — such as a nitrogen-hydrogen mixture. This oxygen-isolation mechanism prevents the formation of oxide scales and decarburization layers on the metal surface.
    Q3 What is the temperature uniformity performance inside the furnace?
    Through strong convective circulation technology, the temperature difference within the furnace chamber can be controlled within ±5℃. This ensures highly consistent material properties throughout the entire batch, and the full process is managed automatically by a computer control system.
    Q4 What metals and materials can be processed in this furnace?
    The furnace supports a wide range of metal materials. For non-ferrous metals, it handles copper, copper alloys, and aluminum alloys. For ferrous metals, it processes stainless steel, silicon steel, ordinary carbon steel, and alloy steel — covering both intermediate and finished annealing of coil and wire products.
    Q5 How does the double furnace base design improve production efficiency?
    The double furnace base configuration allows one base to be in active heating mode while the other is simultaneously being cooled and reloaded. This overlap of operations enables quasi-continuous production, significantly reducing downtime and increasing overall throughput. A single furnace can accommodate a loading capacity of up to 30 tons.
    Q6 What environmental benefits does the bright annealing furnace offer compared to traditional methods?
    Because the bright annealing process prevents surface oxidation entirely, the traditional acid washing step required after conventional annealing is completely eliminated. This removes the associated acid pollution and wastewater treatment challenges, making the process significantly more environmentally friendly and compliant with modern green manufacturing standards.