Microscopic analysis of various metal tissues
Metallographic obligation from time to time over the years from the metallographic specimen polished surface by microscope observation to qualitatively depict the characteristics of the microstructure of the metal material or the use of various types of standard pictures to compare the method of assessment of microstructure, grain size, non-metallic admixtures and phase texture points, etc., this method is not high precision, evaluation of the punctual with a great deal of subjectivity, which is to the consequences of the reproducibility is not satisfactory, and are in the metallographic specimen Polished surface of the two-dimensional plane determination, the results of its measurement and three-dimensional space real organisation depiction comparison has a certain gap. The emergence of modern body vision science for people to provide a two-dimensional image extrapolated to three-dimensional space science, that is, two-dimensional plane of the measured data and metal materials in three-dimensional space of the theoretical microscopic organisation of the shape, size, quantity and distribution of a science, and can make the material three-dimensional space organisation of the shape, size, quantity and distribution of its mechanical function to establish an intrinsic contact for the scientific evaluation of the material to provide a reliable analysis data. Reliable analysis data for scientific evaluation of materials.
Due to the metal materials in the apparent emblem of the organisation and non-metallic admixtures are not uniformly distributed, so the determination of any one parameter can not only rely on the human eye in the microscope under the determination of a field of view or a few field of view to determine the need to use the method of accounting for more than enough field of view of a number of accounting obligations, in order to ensure that the measurement results of the reliability of the measurement. Assuming that only rely on the human eye in the microscope out of the rest of the visual assessment, its accuracy, consistency and reproducibility are very poor, and the determination of the speed is very slow, and some even due to the amount of obligation is too large and can not be carried out. Image analyser to improve the advanced electronic optics and electronic accounting machine technology to replace the human eye observation and accounting accounting, can be fast and accurate for the determination of accounting significance and data processing, but also has a high degree of accuracy, good reproducibility, to avoid the treatment of elements of the metallurgical assessment of the results of the impact of such characteristics, and simple operation, can be printed directly to the measurement of the declaration, then has become an indispensable means of quantitative metallurgical analysis.
Microscope image analyser is a powerful instrument for quantitative metallographic drilling of materials, but also a good deputy of daily metallographic inspection, can avoid the subjective error brought by manual evaluation, and then also avoid the phenomenon of skin pulling. Although in the daily metallographic inspection, can not and do not have to use the image analyser every time, but when the product quality is abnormal or metallographic tissue level is between qualified and unqualified and can not be judged, then you can use the image analyser to quantitative analysis, to produce accurate results to ensure product quality. The use of image analyser in metallographic analysis, expanding the metallographic inspection testing projects, promoting the improvement of the detection level, on the improvement of the substance of the inspectors is also very useful.
