Modeling and Analysis of Temperature Compensation for Multi-temperature Zone Sintering Furnace Temperature Sensing

The surface temperature of workpieces in a multi-temperature zone sintering furnace is an important parameter to characterize the performances system. Due practical structural properties furnace, however, conventional way measurement cannot detect exact directly, making it difficult control system precisely. To address such issue, this paper proposes, for first time best our knowledge, compensation algorithm based soft-measurement technique compensate measuring points. Specifically, we analyze heat-transfer mechanism within electric heating and workpiece establish mathematical model first, then calculate radiative heat transfer coefficient between diffuse gray using discrete radiation method. Finally, soft proposed applied temperature. Both simulations experiments with are conducted verify correctness effectiveness different cases. Results show that could help maintain difference range limit ±5°, which much better as compared methods.