Small-sized and irregular sample clamping device and sample preparation method

Abstract

The invention discloses a small-sized and irregular sample clamping device and a sample preparation method. The clamping device comprises a gland and a clamping device main body having a cylindrical structure, and a spring arranged between the gland and the clamping device main body. The sample preparation method comprises the steps of: placing a sample preparation mold on a thermal embedding sample stage, placing a sample at the center of the thermal embedding sample stage, and performing thermal embedding sample preparation on the sample by using a thermal embedding machine; disassembling the mold from the sample after the sample preparation is completed to obtain a ''T''-shaped sample; grinding a test surface of the sample to be flat and clean; and placing the sample in the clamping device for direct reading spectral analysis. The sample preparation method can effectively solve the problem that the small-sized and irregular sample cannot be detected in the direct reading spectrum, and reduces the requirements on the shape and size of the sample.

Description

technical field [0001] The application belongs to the field of chemical analysis of element detection, and in particular relates to a clamping device and a sample preparation method for small-sized and irregular samples. Background technique [0002] Direct-reading spectroscopic analysis technology has been widely used in furnace detection and metallurgical analysis due to its high detection accuracy and fast analysis speed. However, in the actual detection process, it is often encountered that the shape of the sample is irregular or the sample diameter is smaller than the excitation hole of the direct-reading spectrum sample stage. At this time, it will be difficult to directly detect the sample. At present, for the detection of such small samples, the chemical detection of drilling cuttings is commonly used, which is time-consuming and laborious. However, the small sample detection fixtures on the market are only suitable for analyzing rods and linear products with relativ...

AI Technical Summary

Problems solved by technology

However, in the actual detection process, it is often encountered that the sample is irregular in shape or the sample diameter is smaller than the excitation hole of the direct-reading spectrum sample stage. At this time, it is very difficult to directly detect the sample

At present, for the detection of such small samples, the chemical detection of drilling cuttings is commonly used, which is time-consuming and laborious. However, the small sample detection fixtures on the market are only suitable for analyzing rods and linear products with relatively regular shapes, and are not very suitable for samples with irregular shapes. Good fixed clamping, such as the patent CN205607846U discloses a small-diameter steel bar sample direct-reading spectrometer fixture, the two sides of the fixture base are respectively provided with a positioning screw hole communicating with the cylindrical groove, two positioning screw holes Horizontal and face-to-face setting, two screws are respectively screwed in the two positioning screw holes to fix the sample. It is difficult to fix irregular samples with two screws, and there is a certain safety hazard for small samples. It is difficult to sample and detect

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