Heating atmosphere control is a critical control point in the heat treatment process. In an unregulated atmosphere environment, workpieces are prone to oxidation and decarburization, which leads to reduced surface hardness, diminished wear resistance and a significant increase in subsequent machining costs. The launch of the new-generation multi-purpose furnace with precise controlled atmosphere proportioning enables real-time dynamic regulation of atmosphere composition, with oxygen content controlled below 5ppm, effectively eradicating oxidation and decarburization defects. Boasting multi-process compatibility, this furnace can meet the requirements of various atmosphere heat treatment processes such as carburizing and nitriding.
Traditional controlled atmosphere furnaces are plagued by issues like low proportioning precision and slow response, making them unable to meet the heat treatment demands of workpieces made from diverse materials. The multi-purpose furnace with precise controlled atmosphere proportioning is equipped with a high-precision gas analysis module and an intelligent proportioning algorithm. It can automatically match the optimal atmosphere components according to workpiece materials (e.g., carbon steel, alloy steel, stainless steel). For example, it precisely controls the concentration ratio of CO, CO₂ and CH₄ in the carburizing process, and accurately regulates the NH₃ decomposition rate in the nitriding process. Meanwhile, the furnace is furnished with a real-time atmosphere leakage monitoring function to ensure the stability of the furnace atmosphere.
In application tests on products such as automotive gears and precision bearings, the surface carbon concentration fluctuation of workpieces processed by this furnace is ≤ 0.05%, no obvious oxide scale is formed, the subsequent machining allowance is reduced by 30%, and the comprehensive production cost is cut down by 15%. The promotion and application of this technology will drive the homogenization improvement of heat treatment quality in the field of precision machinery manufacturing.
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