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




