Direct reading spectrometer standard sample analysis method - Database & Sql Blog Articles

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[Article introduction]

The spectral grinding machine is the main spectroscopy equipment used for spectral sample polishing in the preparation of spectral samples. After the sample is polished by the spectral sample grinding machine, the spectral sample can obtain a bright mirror surface, which is more conducive to accurate spectral analysis.

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JB-750 type

The photoelectric direct reading spectrometer can analyze the content of various elements such as carbon, silicon, sulfur, manganese, phosphorus, chromium and nickel in the metal.

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The operation of electric direct reading spectrometer can be divided into: grinding sample, slit scanning, standardization, sample control calibration and sample analysis.

The following describes the method for analyzing the sample by its sample:

Grinding sample:

The preparation of the sample is carried out in the later stage, that is, grinding on the grinding machine, the side of the sample to be tested must be flat, so that the texture of the sample is clear, and the fit between the sample and the excitation table can be ensured.

This will ensure the tightness of the gas flushing chamber and allow the sample to be better excited.

The standard samples that have just been purchased and the surface of the samples taken from the workshop are untreated. Spectrometers cannot directly analyze them. We need to smooth and smooth the samples to analyze them on the spectrometer. The sample tool uses a special grinding machine. The AC220V motor drives the 36-mesh sandpaper or grinding wheel to rotate. In the process of grinding the sample, we must balance the sample on the sandpaper, and apply even force. Otherwise, the ground sample will be polished. It will not be smooth and a gradient will appear. When grinding the sample, the sample should be ground in the same position, do not swing back and forth or left and right, so that the grain surface of the ground sample is always in the same direction, do not appear cross-grain. Since iron or stainless steel samples are difficult to grind, if the surface temperature of the sample is particularly high, we can use local cooling after cooling water, and then grind until the sample is smoothed and the surface texture is uniform. After the sample is ground. We can't touch the surface of the grinding by hand or other things, and don't let the dust cover the surface, which will affect the analysis accuracy.

JB-750 photoelectric direct reading spectrometer has the advantages of fast analysis speed, good repeatability and good stability. It is widely used in metallurgy, machinery and other industrial sectors, for online analysis before smelting furnace and product inspection of central laboratory. One of the effective means of controlling product quality.