Sample preparation method capable of realizing quick detection of nitrogen composition

Abstract

The invention discloses a sample preparation method capable of realizing quick detection of nitrogen composition and relates to preparation methods of nitrogen detection samples. Through the sample preparation method, the problems that currently, detection time is long, and a before-furnace rapid production requirement cannot be met are solved. The sample preparation method comprises the steps that after molten iron is smelted, iron liquid is poured into a nitrogen detection mold; after the iron liquid is solidified, the sample is taken out and cooled to normal temperature, and the tail of thesample is knocked off; and an oxide layer on the tail of the sample is removed, and the tail is air-dried. The mold comprises a first mold part and a second mold part which are detachably connected,wherein the first mold part and the second mold part define a sample preparation cavity, one end of the sample preparation cavity is provided with a pouring cavity, the sample preparation cavity is communicated with the pouring cavity, the sample preparation cavity and the pouring cavity are both cylindrical cavities, and the pouring cavity is larger than the sample preparation cavity. When the nitrogen detection sample is prepared through the method, the molten iron is directly taken to be poured to form the nitrogen detection sample, it is not needed to form another sample through pouring and then process the sample into the nitrogen detection sample, the sample can be quickly prepared and used for detection, before-furnace rapid detection of the nitrogen composition is realized, and production control is stabilized.

Description

technical field [0001] The invention relates to a preparation method of a nitrogen detection sample, and more specifically relates to a sample preparation method capable of rapidly detecting nitrogen components. Background technique [0002] With the advancement of science, researchers have made in-depth research on nitrogen, and have proved the two sides of nitrogen. Within a certain range of nitrogen content, the material properties of castings can be improved, but if it exceeds a certain amount, there will be negative effects, and nitrogen pores will appear in the product, which will lead to the scrapping of products in batches, which is difficult to solve. [0003] At present, there are two commonly used nitrogen detection methods. One detection method is to use spectral detection, but the detected nitrogen composition has a large deviation. For precise production, it cannot meet the requirements of precise production. Another detection method is to use an oxygen-nitrog...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a sample preparation method that can realize rapid detection of nitrogen components in order to solve the shortcomings of the prior art that the long sample preparation time leads to long detection time and cannot meet the requirements of rapid production in front of the furnace.

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