论文部分内容阅读
应用于核能装备的奥氏体不锈钢部件经过TIG焊接后,在生产和维修过程中容易产生裂纹,严重影响相应装备的正常运行和使用寿命。研究表明裂纹的产生和生产焊接过程中的冷却温度有很大的关系。传统的接触式测温如热电偶测温法没法测量焊接过程中的冷却温度。基于FLIR-SC7500多通道测温相机成功开发了一套以数字图像技术和红外热辐射测温技术为原理的双色红外测温系统,并将其测量结果和传统的单色法测温结果进行对比,表明开发的双色测温法具有可行性和有效性。
After the TIG welding of the austenitic stainless steel components used in nuclear equipment, cracks easily occur in the production and maintenance processes, which seriously affect the normal operation and service life of the corresponding equipment. Studies have shown that the generation of cracks has a great relationship with the cooling temperature in the production of welding. Conventional contact thermometry such as thermocouple temperature measurement method can not measure the cooling temperature during welding. Based on the FLIR-SC7500 multi-channel temperature camera, a set of two-color infrared temperature measurement system based on digital image technology and infrared thermal radiation temperature measurement technology has been successfully developed. The measurement results are compared with the traditional one-color temperature measurement results , Indicating that the development of two-color temperature measurement method is feasible and effective.