Processing method of oxygen, nitrogen and hydrogen analysis test sample by using coring drill

Abstract

The invention relates to a method for processing an oxygen, nitrogen and hydrogen analysis test sample by using a coring drill, which comprises the following steps of: fixing a sampling metal sample plate with the thickness of T by using a clamp; a drill bit with the diameter of phi 1 is used for pre-drilling a hole in the sampling position of the front face of the sampling metal sample plate, andthe drilling depth is H1; repeating the step 2 on the reverse side of the sampling metal sample plate, pre-drilling at the corresponding sampling position, the drilling depth being H2, H1 and H2 satisfying T = H1 + H2 + h, and h being the height of the sampling cylinder; and a hollow drill bit or a coring drill bit with the outer diameter of phi 2 and the inner diameter of phi 3 is used for drilling and sampling at the pre-drilling position of the sampling metal sample plate. According to the method for processing the oxygen, nitrogen and hydrogen analysis test sample by using the coring drill, provided by the invention, when O, N and H samples are processed, the operation is simple, the sample preparation time is saved, the labor intensity is reduced, and the sample preparation is simpleand convenient.

Description

technical field [0001] The invention relates to a method for processing test samples for oxygen, nitrogen and hydrogen analysis by core drilling, and belongs to the field of sample preparation and processing of test samples. Background technique [0002] At present, in the laboratory, the processing methods of columnar samples for oxygen, nitrogen and hydrogen analysis tests generally have the following types: [0003] 1. Process the sample into a rod sample at a low speed by sawing, turning, etc., and then cut it into a columnar sample. Generally, when the sample is processed as a rod-shaped product with a diameter of less than 10mm, this method is used for processing. The disadvantage of this method is that when it is used for plates, the sample must first be processed into a rectangular strip by sawing and other processing methods, and then turned into a circle by turning; when processing a sample with a thicker diameter, it is necessary to prevent the sample from overhe...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that when it is used for plates, the sample must first be processed into a rectangular strip by sawing and other processing methods, and then turned into a circle by turning; when processing a sample with a thicker diameter, it is necessary to prevent the sample from overheating. The bluing will affect the detection value of the subsequent analysis of the sample, so the cutting amount of each cutting process should be controlled, thereby increasing the number of cutting times, resulting in too long processing time

The disadvantage of this method is that if the thickness of the sample is thick, the sample must be ground to a certain thickness before punching, otherwise the punch is easily damaged, or the punched sample exceeds the thickness of the sample measured by the instrument Upper limit; when the hardness of the sample is high, it will also cause the punch to be easily damaged

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