Full Hydrogen Bell Annealing Furnace - Top China Suppliers & Factory for Efficient Heat Treatment Solutions
Product Introduction
⚡ 1.6 : 1
The configuration ratio between the furnace and the heating cover is reduced. The traditional HNX furnace is 2:1 — two HNX furnaces are equipped with one heating cover. Thanks to the extremely short cooling time of the all-hydrogen furnace, the ratio is reduced to 1.6:1, which saves floor area and reduces investment.
📈 40%
The use of 100% hydrogen as a protective gas, corrugated inner casing, large gas flow and high-speed burner — combined with 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) sealing, sufficient washing time and advanced control methods, annealed steel coils will not have any oxidation color.
Frequently Asked Questions
❓ What does the 1.6:1 furnace-to-heating-cover ratio mean?
The 1.6:1 ratio means that for every 1.6 furnaces, only one heating cover is required. Compared to the traditional 2:1 ratio, this improvement reduces the required floor space and lowers overall equipment investment costs, made possible by the shorter cooling cycle of the all-hydrogen furnace.
❓ Why is 100% hydrogen used as a protective gas?
100% hydrogen provides superior thermal conductivity compared to traditional nitrogen-hydrogen mixtures. This enables faster heating and cooling cycles, improved surface quality of the annealed steel coils, and contributes to the significant 30%–40% increase in production efficiency.
❓ How does the system achieve PPm-level sealing?
The system uses advanced sealing technologies to maintain a two PPm (parts-per-million) level seal. This ensures that oxygen and moisture cannot enter the furnace atmosphere, combined with sufficient purging time and precision control systems to completely prevent oxidation on steel coil surfaces.
❓ What role does the corrugated inner casing play in performance?
The corrugated inner casing design increases the surface area for gas circulation, promoting more uniform heat distribution around the steel coil. Combined with a large gas flow and high-speed burner, it significantly enhances the heating and cooling efficiency of the furnace system.
❓ How does combined gas/water cooling improve the annealing process?
Combined gas/water cooling with strong convection allows for a much faster and controlled cooling rate. This significantly shortens the total annealing cycle time, which is the key reason the furnace-to-cover ratio can be optimized to 1.6:1, ultimately boosting throughput by up to 40%.
❓ What are the main advantages of this all-hydrogen furnace over traditional HNX furnaces?
Compared to traditional HNX furnaces, the all-hydrogen furnace offers a more efficient 1.6:1 equipment ratio (vs. 2:1), a production increase of 30%–40%, and guaranteed oxidation-free results through PPm-level sealing. These advantages translate to lower capital costs, smaller facility footprints, and higher quality output.