High Hydrogen Gas Bright Belt Annealing Furnace - China Suppliers and Factory for Eco-Friendly 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. 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.
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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. 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 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 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
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What is a bright belt annealing furnace and how does it differ from a conventional annealing furnace?
A bright belt annealing furnace performs heat treatment in a sealed, oxygen-free environment using protective gases (such as nitrogen-hydrogen mixtures) or vacuum conditions. Unlike conventional annealing furnaces, it prevents oxidation and decarburization, allowing the metal surface to remain bright and clean after processing — eliminating the need for subsequent acid washing.
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What metals and materials are suitable for processing in a bright belt annealing furnace?
The furnace is suitable for a wide range of 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, typically in the form of coils, pipes, or wires.
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How is the furnace temperature controlled and how uniform is it during operation?
The furnace uses strong convective circulation technology combined with a fully automatic computer control system. This maintains the temperature difference within the furnace to within ±5℃, ensuring highly uniform heat distribution throughout the entire batch and consistent material properties across all treated parts.
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What are the environmental benefits of using a bright belt annealing furnace?
Because the bright annealing process produces an oxide-free surface, the traditional acid pickling step after conventional annealing is completely eliminated. This removes the generation of acid wastewater and toxic fumes from the production process, making the operation significantly cleaner and more environmentally compliant.
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How does the "double furnace base" design improve production efficiency?
The double furnace base design allows two furnace bases to operate in alternating cycles. While one base is in the heating phase, the other can be simultaneously cooled and reloaded with new material. This staggered workflow enables near-continuous production, maximizing throughput and reducing idle time significantly.
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How is the combustion heating process managed and controlled in this furnace?
Secondary air inlet and saturated steam are introduced to convert coal into carbon monoxide gas, which is then fed into the covered furnace for combustion and heating. The ratio of air intake and steam relative to the coal seam is precisely and automatically managed by the PLC control system, with automatic slag discharge to ensure stable and clean operation.