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China Full Hydrogen Bell Annealing Furnace - High Efficiency, Low Noise | Leading Suppliers & Factory

The full hydrogen bell annealing furnace is an advanced heat treatment solution that utilizes hydrogen as a protective gas. Unlike traditional bell furnaces that combine hydrogen with nitrogen, our full hydrogen bell furnace operates using 100% hydrogen for optimal heat conduction. This innovation ensures superior heat transfer, as hydrogen's heat conduction speed is seven times faster than that of nitrogen, allowing for efficient heat delivery from the radial direction of steel coils, As a leading China supplier and factory of advanced furnace technology, we emphasize the advantages of using hydrogen in our processes. Hydrogen, being highly reactive at elevated temperatures, effectively converts oxide residues into water vapor. This characteristic greatly enhances the annealing quality of cold-rolled thin plates, making our furnaces the preferred choice for manufacturers seeking high-quality results, Additionally, hydrogen's low density—only 1/14 that of nitrogen—significantly reduces fan power consumption and lowers equipment noise, contributing to a more efficient and quieter operation. Trust our full hydrogen bell annealing furnace to deliver exceptional performance and quality in your heat treatment processes

    Product Introduction

    1.6:1

    The configuration ratio between the furnace and the heating cover is reduced. The traditional HNX furnace is 2:1, that is to say, two HNX furnaces are equipped with one heating cover. The ratio of the furnace cover is reduced to 1.6:1 due to the extremely short cooling time of the all-hydrogen furnace, which saves the floor area and reduces the investment.

    40%

    The use of 100% hydrogen as a protective gas, corrugated inner casing, large gas flow and high speed burner, combined gas/water cooling and strong convection can increase production by 30% to 40%.

    PPm Level

    No oxidation phenomenon, due to the realization of reliable two PPm level (millionth) of the seal, enough washing time, advanced control means, annealed steel coil will not have oxidation color.

    Frequently Asked Questions

    What is the furnace to heating cover ratio in this all-hydrogen system?

    The configuration ratio is optimized to 1.6:1 compared to the traditional 2:1 ratio in HNX furnaces, significantly shortening cycle times and saving plant floor space.

    How does the equipment achieve a 30% to 40% production increase?

    The productivity boost is driven by using 100% pure hydrogen protective gas, high-speed burners, corrugated inner casings, high gas flow, and an advanced combined gas/water strong convection cooling system.

    How is oxidation prevented during the annealing process?

    Oxidation is prevented through a precision seal rated at two PPm level (parts per million), adequate atmosphere washing time, and advanced automated process control.

    How does the 1.6:1 configuration reduce capital investment?

    Because fewer heating covers are needed per furnace base due to rapid cooling cycles, equipment acquisition costs and required plant foundation space are greatly minimized.

    Will annealed steel coils show any discoloration or surface defects?

    No. Thanks to the ultra-tight PPM-level sealing and thorough purging cycles, the annealed coils retain their clean surface without any oxidation color.