Influence Of Sample Temperature Change On LIBS And Compensation Technology

The real-time monitoring of the content change of different elements during the smelting process of the alloy and the adjustment of the control process of the smelting furnace are important for improving the metallurgical production efficiency and product quality.LIBS online detection technology has been widely used in many fields due to its advantages in real-time,in-situ,non-contact,and detection stability.However,in actual production,due to the presence of matrix effects,etc.,LIBS technology is more suitable for the detection of a sample with a relatively stable temperature,while the measurement effect is not ideal for a sample with a large and unstable temperature change.Based on the previous work,this paper establishes a set of compensation formula by studying the effect of sample temperature on LIBS measurement,and includes the control circuit and signal processing circuit for the electrical design of the smelting control process.Finally,experimental methods are used to verify the application of LIBS technology to the field of smelting control,which can result in extremely high product quality and productivity.Through a large amount of data reading and sorting in the early stage,aiming at the existing technical methods and detection methods,the research content and significance of this article are first determined,that is,by observing the experimental phenomena caused by changes in the sample temperature,the LIBS quantitative analysis results are compensated.And apply it to the field of smelting control to improve product quality.In the experiment,spectral intensity data of relevant elements at different sample temperatures were obtained.Through analysis,it was found that the spectral line intensity value reached a relative steady state at a certain temperature stage.According to this rule,partial least squares method was used for quantitative analysis,and the results of the experiment were compensated by the method of split line segmentation.Good results were obtained.Finally,in order to apply LIBS technology to the field of metallurgy,a metallurgical control process was designed.Through experiments,the application of LIBS technology to the field of metallurgy not only improves the accuracy of element detection,but also improves the response speed of the system and improves the production efficiency.The work done in this article is: First,in order to ensure the accuracy of the test device,this article redesigned the original device and designed a set of temperature measuring equipment;second,through a large number of experiments,analyzed the temperature change of the sample.Metal and non-metal elements,duration of plasma and different influences of sample ablation volume;thirdly,the temperature compensation formula was established by studying the relationship between sample temperature and spectral line intensity;fourth,combined with LIBS technology,optimized smelting Control the process and conduct electrical automation design of its smelting process.The results show that the application of LIBS technology to the field of alloy smelting can increase the response speed of the system and increase the production efficiency.