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

This gas generator, designed specifically for small and medium-sized cold rolling strip steel enterprises in China, operates without the need for liquefied petroleum gas (LPG), coke oven gas, or mixed gas. Instead, it utilizes block coal or coke to produce generator gas for annealing equipment. As one of the leading suppliers in the industry, our factory has engineered this product to ensure zero smoke and pollution. The generator is equipped with advanced automatic dust removal and tar removal systems, achieving clean operation with no black smoke emissions. Trust our China-based factory for your environmentally friendly annealing solutions

    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 & 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.

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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, resulting in high production efficiency.

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    Green & Environmentally Friendly

    After annealing, the surface is bright and free of oxidation, eliminating the need for the traditional acid washing process after annealing. 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, etc.

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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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    The 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.

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    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

    Q What is a bright belt annealing furnace and how does it work?
    A bright belt annealing furnace is an advanced industrial heat treatment equipment that processes metal coils, pipes, and wires in a sealed, oxygen-free environment. It works by placing the workpiece inside a sealed inner cover, which is either evacuated or filled with a high-purity protective gas such as a nitrogen-hydrogen mixture. The outer cover provides the heat source, ensuring the metal is annealed without oxidation or surface discoloration.
    Q What are the key advantages of using a bright annealing furnace over traditional annealing?
    The main advantages include a bright, oxidation-free surface finish that eliminates the need for post-annealing acid washing, superior temperature uniformity (±5℃) for consistent material properties, high efficiency through the double furnace base design enabling near-continuous production, and a more environmentally friendly process that removes acid pollution and wastewater concerns.
    Q What metals and materials are compatible with this equipment?
    This equipment supports a wide range of metals. For non-ferrous metals, it handles copper, copper alloys, and aluminum alloys. For ferrous metals, it is suitable for stainless steel, silicon steel, ordinary carbon steel, and alloy steel — including both coil and wire product forms for intermediate or finished annealing processes.
    Q How is the temperature controlled during the annealing process?
    Temperature is precisely managed through strong convective circulation technology combined with a full computer-based automatic control system. This system oversees the entire process — including heating, heat preservation, and cooling — maintaining the temperature difference within the furnace at ±5℃ to guarantee uniform material properties throughout the entire batch.
    Q What is the maximum loading capacity per furnace, and how is production continuity achieved?
    A single furnace can support a loading capacity of up to 30 tons. Production continuity is achieved through the "double furnace base" design: while one base is actively heating, the second base can simultaneously be unloaded, cooled, and reloaded with new material. This arrangement enables quasi-continuous production and significantly increases overall throughput.
    Q How does the PLC system contribute to the furnace's operation?
    The PLC (Programmable Logic Controller) system plays a central role in automating key operational parameters. It precisely controls the ratio of secondary air intake and saturated steam to the coal seam, manages the conversion of coal into carbon monoxide gas for combustion heating, and handles automatic slag discharge. This ensures consistent, safe, and efficient furnace operation with minimal manual intervention.