Metallographic microscope choice technique
Generally, when purchasing a metallographic microscope, it mainly depends on the purpose of the metallographic microscope. For example, if you just observe the surface of the sample, you still need to take pictures, do you need bright and dark fields, and do you want to do composition analysis? It depends on how much your company's budget is, and it is really true to buy the most cost-effective microscope in a limited budget! The quality and effect of imported metallographic microscopes are better than domestic ones, but the price will be much more expensive. It mainly depends on your budget. If the budget is not enough, domestic metallographic microscopes can also be considered, and the current domestic microscopes are more effective. And the quality has indeed been greatly improved, so you can use it with confidence. The following are the following types that can be divided into various grades according to the performance of the brand for you to choose from:
1. Imported metallographic microscopes: The characteristics of these microscopes are: the optical system adopts infinity, and can provide observation methods such as bright field, dark field, transmission, reflection, and DIC. The lens has high resolution and long service life, but the price is relatively high.
2. Domestic upright metallurgical microscope: This kind of microscope is suitable for general opaque objects, and the magnification requirements are above 100X and below 1000X. It only has bright field, and the lens resolution is low, but it is very cost-effective.
3. Domestic inverted metallographic microscope: The characteristics of this kind of microscope are basically the same as those of domestic upright microscopes, but the lens is at the bottom, the stage is larger, and there is no requirement for working distance. It is more suitable for relatively low prices but larger samples client. besides,
Metallographic microscope is a high-value and high-precision optical instrument, and its core part is the optical imaging system. The quality of the product is related to the effect of imaging and the accuracy of analysis and judgment. When purchasing a metallographic microscope, pay attention to the following two points:
1. In terms of imaging quality, four basic conditions must be met at the same time. The metallographic microscope is to use the principle of optical imaging to obtain the metal microstructure image (that is, the metallographic map), and then conduct qualitative and quantitative analysis on the metallographic map. The quality of the image is the primary indicator to measure the quality of the metallographic microscope. To obtain a clear image must meet the four basic conditions of high contrast, high brightness, good color reproduction and high resolution.
The first three conditions are the most likely to be ignored by users when selecting models. Users should not blindly pursue resolution and ignore the other three aspects when purchasing. Only in this way can they achieve value for money and make the best use of everything.
2. The continuous stability of the mechanical properties of the metallographic microscope should be considered in use. In addition to the imaging quality, the instrument should also be considered to maintain the best working condition stably for a long time under normal use, which we call the continuous stability of mechanical properties.
Metallographic microscope is a high-value and high-precision optical instrument, and its service life can reach more than 30 years. When purchasing, users should also check the manufacturer's choice of materials, manufacturing accuracy, and the scientificity and rationality of mechanical design. . The above two necessary conditions put forward more specific requirements for manufacturers in manufacturing from a practical point of view, and users should also follow the above principles to purchase economical and applicable metallurgical microscopes.
