Full Hydrogen Bell Annealing Furnace - High Efficiency Heat Treatment from China Suppliers and Factory
Product Introduction
The configuration ratio between the furnace and the heating cover is reduced. The traditional HNX furnace is 2:1 — two HNX furnaces equipped with one heating cover. The ratio is reduced to 1.6:1 due to the extremely short cooling time of the all-hydrogen furnace, which saves floor area and reduces 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. Through reliable PPm-level (parts per million) sealing, sufficient washing time, and advanced control measures, the annealed steel coil will exhibit no oxidation discoloration.
Frequently Asked Questions
It means that for every 1.6 furnaces, only one heating cover is required. This is an improvement over the traditional 2:1 ratio used in standard HNX furnaces, resulting in reduced floor space usage and lower overall investment costs.
All-hydrogen furnaces use combined gas and water cooling along with strong convection technology. Hydrogen has superior thermal conductivity compared to nitrogen-hydrogen mixtures, which dramatically speeds up the cooling phase and allows for a more efficient furnace-to-cover configuration.
100% hydrogen combined with a corrugated inner casing, high-volume gas flow, high-speed burners, and strong convection significantly improves heat transfer efficiency. This combination can increase overall production capacity by 30% to 40% compared to conventional systems.
PPm (parts per million) level sealing refers to an extremely tight sealing standard that limits oxygen infiltration to just a few millionths of a unit. This level of precision ensures that the annealing atmosphere remains pure enough to completely prevent surface oxidation on the steel coil.
No. Thanks to PPm-level sealing integrity, sufficient gas purging time, and advanced process control, the annealed steel coil will not exhibit any oxidation-related discoloration. The surface quality is maintained at a high standard throughout the annealing process.
Yes. The optimized 1.6:1 furnace-to-cover ratio, rapid cooling capability, and up to 40% productivity improvement make this system well-suited for high-volume, continuous production environments where efficiency, space saving, and steel surface quality are all critical requirements.