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China High Hydrogen Gas Annealing Furnace for Steel Strips by Leading Suppliers and Factory

Our gas generator is specifically engineered for small and medium-sized cold rolling strip steel enterprises in China. It is designed to operate without liquefied petroleum gas (LPG), coke oven gas, or mixed gases, utilizing block coal or coke as a reliable source for generator gas to power annealing equipment, As a leading supplier and factory, we ensure that our gas generators produce no smoke or pollution. With advanced features such as automatic dust removal and tar removal systems, our products achieve zero pollution and eliminate black smoke emissions, making them an eco-friendly choice for steel manufacturers. Choose our innovative solutions to enhance your production process while prioritizing environmental sustainability in China's industrial sector

    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.

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    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 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 the traditional acid washing process. 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 fully 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

    What is a bright belt annealing furnace and how does it work?
    A bright belt annealing furnace is an advanced industrial heat treatment equipment designed for metal coils, pipes, and wires. It works by placing the workpiece 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). Heating is applied through the outer cover, effectively isolating oxygen to prevent oxidation and maintain a bright metal surface.
    What metals and materials can be processed in a bright annealing furnace?
    This equipment 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, alloy steel, and other coil and wire products requiring intermediate or finished annealing treatment.
    How precise is the temperature control inside the furnace?
    The bright annealing furnace uses strong convective circulation technology to achieve highly uniform heating. The temperature difference within the furnace can be maintained within ±5℃. The entire heating, heat preservation, and cooling process is automatically managed by a computer control system, ensuring consistent and reliable material properties throughout each production cycle.
    Why is bright annealing considered more environmentally friendly than traditional annealing?
    Traditional annealing often results in surface oxidation and scale formation, which requires subsequent acid washing processes to clean the metal surface. These acid washing processes generate acid pollution and wastewater that require costly treatment. Bright annealing, by using a protective atmosphere, produces an oxide-free, bright surface finish — completely eliminating the need for acid washing and its associated environmental challenges.
    What is the "double furnace base" design and what are its production benefits?
    The "double furnace base" design means two furnace bases share the system. While one base is actively heating its workload, the other can simultaneously be in the cooling or loading stage. This staggered operation enables quasi-continuous production, significantly increasing overall output efficiency. A single furnace loading capacity can reach up to 30 tons, making it highly suitable for large-scale industrial manufacturing.
    How is the combustion and heating process controlled in the furnace?
    The furnace uses secondary air inlet and saturated steam to convert coal into carbon monoxide gas, which is fed into the covered furnace for combustion and heating. The ratio of air intake and steam to the coal seam is precisely and automatically controlled by a PLC (Programmable Logic Controller) system. Additionally, slag discharge is performed automatically, reducing manual intervention and improving operational safety and efficiency.