【摘要】 在概述国内外轧钢加热炉内钢坯辐射测温原理基础上,重点研究了炉内钢坯温度在线红外测试新技术新方法。该项技术是从炉内辐射测温光程空间干扰场性质和钢坯表面特性研究出发,在系统分析测温数模和辐射传输方程基础上,提出用光谱滤波技术,自相关测量方法,实时判断处理了非稳态随机跳变干扰,应用现场绝对定标数据,在线扣除各温程段等效背景干扰,由所测等效辐射中分离出“钢坯表面温度”辐射信息。我们研制的测温系统运行稳定,维修方便,在1200℃左右测温相对误差ΔT/T≤1～1.5％,并实现了开环温度控制。更多还原

【Abstract】 Based on the summarized principles of radiation temperature measurement for slabs in re-heating furnace, research on a new on-line infrared technique for temperature measurment inreheating furnace was carried out. The technique prcceeded from nature of the space interference field and characteristics ofslab surface in reheating furnace. On the basis of systematic analysis of mathematic modeland equation cf radiant transfer, a real time diagnosis and treatment method has been wor-ked out, in which the spectral filter and auto-correlation measurement are used of non stati-onary random fluctuation interferrence. Therefore, the radiant information of surface temperature might be obtaine dthrough me-asured equivalent radiation after deducting various background interferences from absolutecalibration data. The operation of developed system is stable and easy to maintain. The relative error△T/T≤1～1.5％ of measurment near 1200℃. The open loop control of temperature has been re-alized.更多还原