BBH Box-Type Multi-Purpose Furnace

Product Introduction: Overview of the BBH Box-Type Multi-Purpose Furnace—The launch of the BBH pre-pumping box-type multi-purpose furnace has propelled domestic heat treatment equipment to a new level. This series of furnaces organically integrates vacuum technology with controlled-atmosphere techniques, offering significant advantages in terms of environmental protection, energy efficiency, and operational effectiveness. Main Applications: Carburizing/Carbonitriding/Quenching under protective atmospheres, Normalizing, Annealing, and Secondary Heating Quenching. Equipment Features: ◆ The front door is equipped without a flame curtain, greatly improving the working environment. ◆ Nitrogen purging reduces the likelihood of grain-boundary oxidation during both heating and cooling processes. ◆ High safety performance allows for fully automated, unmanned operation. ◆ A high-precision atmosphere control system ensures stable carbon potential within the furnace. ◆ When the furnace is shut down, air cannot enter the furnace chamber, saving time required for atmosphere replacement and significantly shortening the time needed to re-establish the atmosphere upon startup. The carbon potential stabilization time is reduced compared to conventional multi-purpose furnaces, resulting in lower operating costs. ◆ The front chamber uses vacuum pumping for loading and unloading, eliminating the need for a flame curtain at the front door and thus saving substantial fuel gas consumption. The furnace boasts excellent airtightness, dramatically reducing the amount of drip lubricant used. Gas flow rates are reduced by 1/6 to 1/8 compared to traditional multi-purpose furnaces. ◆ In the front chamber, vacuum pumping eliminates the risk of accidents caused by flame-curtain combustion during loading and unloading; it also minimizes oxidation and degradation of quenching oil, keeping the working environment clean and ensuring superior product quality while extending the service life of the quenching oil. All types of quenching oils—including cold and hot oils—can be used with this equipment. ◆ This equipment is fitted with residual oxygen analysis devices in the loading chamber to ensure operational safety. BBH-3R vs. BBH-2R Performance Comparison: ◆ The BBH-3R features an independent vacuum purging chamber that does not interfere with normal furnace operation during vacuum purging, thereby enhancing overall equipment efficiency. ◆ The BBH-3R’s vacuum chamber volume is smaller, reducing nitrogen consumption and lowering energy usage. ◆ The BBH-3R’s design reduces quenching delay time compared to the BBH-2R. ◆ Comparison of Processing Times Between BBH-2R and BBH-3R—Technical Parameters