Method for analyzing and detecting oxygen and nitrogen

A detection method, oxygen and nitrogen technology, applied in the analysis of materials, material analysis through optical means, measuring devices, etc., can solve the influence of quantitative analysis reliability and accuracy, the lower limit of analysis cannot meet the requirements of new materials, and cannot Completely eliminate nitrogen interference and other problems, achieve the effect of convenient daily maintenance and maintenance, convenient operation and high conversion efficiency

Inactive Publication Date: 2016-01-06
SUZHOU SABO IND DESIGN
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Problems solved by technology

However, such instruments cannot completely exclude the interference of nitrogen, and the reliability and accuracy of quantitative analysis are affected
There are such work results in China, but the analysis accuracy is low, and the lower limit of analysis cannot meet the requirements of new materials

Method used

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  • Method for analyzing and detecting oxygen and nitrogen
  • Method for analyzing and detecting oxygen and nitrogen
  • Method for analyzing and detecting oxygen and nitrogen

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Embodiment Construction

[0026] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0027] Figure 1-4 It is a structural schematic diagram of an embodiment of the present invention, which includes an analyzer main box A and an analyzer auxiliary box B. The analyzer main box A is provided with a gas extraction unit, and the analyzer auxiliary box B is provided with a detection unit. The air unit and the detection unit are connected through an air circuit and an electric circuit.

[0028] The gas lifting unit includes carrier gas pressure gauge 4, purification furnace 5, carrier gas purification pipe 6, analytical gas pressure reducing valve 7, six-way valve 9, pulse heating furnace 10, dust filter tube 11, reformer 12, sample gas purification pipe 13. The main box A of the analyzer is equipped with a carrier gas inlet A1, a po...

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Abstract

The invention relates to a method for analyzing and detecting oxygen and nitrogen. Oxygen and nitrogen content of steels, nonferrous metals and novel materials can be determined by an infrared detector and a thermal conductivity detector in inert atmosphere by pulse heating to decompose the sample. The analyzing process includes pulse heating the metal powder to be measured to fuse at high temperature in the presence of nickel foil fluxing agent, subjecting the released mixed gases such as CO and N2 to a catalytic reaction in the presence of tombarthite copper oxide in a reformer to form CO2, N2 and H2O, sending to the infrared detector by a high purity carrying gas to determine the oxygen percentage content, absorbing CO2 and H2O by soda asbestos and magnesium perchlorate, and sending to the thermal conductivity detector to determine the nitrogen content. The method has convenient operation and high precision of detection and analysis.

Description

technical field [0001] The invention relates to an oxygen and nitrogen analysis and detection method. Background technique [0002] In recent years, with the research and development of metal materials, the determination of oxygen and nitrogen in metals is essential for the development and production of various steels, non-ferrous metals and new materials such as high-performance titanium alloys. Abroad, inert gas fusion thermal conductivity method and gas chromatography are used to measure argon in metals, and there are commercial instruments for sale. However, such instruments cannot completely exclude the interference of nitrogen, and the reliability and accuracy of quantitative analysis are affected. There are such work results in China, but the analysis accuracy is low, and the lower limit of analysis cannot meet the requirements of new materials. Contents of the invention [0003] The technical problem solved by the present invention is to provide an oxygen and nit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3504
Inventor 丁会张苏陈力航
Owner SUZHOU SABO IND DESIGN
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