Method for analyzing and detecting content of nitrogen in alloy

A determination method and technology of nitrogen content, applied in the field of alloys, can solve the problems of easy explosion, cumbersome operation, and large consumption

Inactive Publication Date: 2018-09-07
TAIYUAN HEAVY IND
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  • Abstract
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Problems solved by technology

In the relevant literature, some adopt the automatic sampling method of wrapping the sample in a tin capsule and nickel capsule and placing it in a nickel basket, which is cumbersome; some use silver nitrate, potassium nitrate and other nitrate reference materials as calibration curves, The analysis results have good traceability, but the nitrate content is as high as 30%-50%, which consumes a lot of reagents, especially basic cotton and graphite crucibles, and nitrate is highly oxidizable and explosive, which has certain dangers

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  • Method for analyzing and detecting content of nitrogen in alloy
  • Method for analyzing and detecting content of nitrogen in alloy

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Embodiment Construction

[0016] In order to make the purpose, technical solution and advantages of the invention clearer, the invention will be further described in detail below in conjunction with specific examples. Although exemplary embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0017] The main instruments and reagents used in the analysis and determination method of nitrogen content in the alloy provided by the invention include but are not limited to:

[0018] Prototype grinding machine (Dongxin brand MZF-1 rapid all-round prototyping machine, Shanxi Quality Inspection Institute Technology Center)

[0019] Oxygen, nitrogen and hydrogen analyzer (ONH836, LECO,...

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Abstract

The invention provides a method for analyzing and detecting the content of nitrogen in alloy. The method comprises the following steps: weighing an alloy sample to be detected, and grinding the alloysample to be detected to form powder; covering the alloy sample to be detected with a flux, and heating the alloy sample to be detected to melt the alloy sample to be detected in order to generate nitrogen; and introducing the generated nitrogen into an oxygen, nitrogen and hydrogen analyzer in order to obtain the content of nitrogen in the alloy sample to be detected. The method for analyzing anddetecting the content of nitrogen in alloy has the advantages of simplicity, fastness, small low detection limit, overcoming of complex sample treatment processes of a chemical method, high efficiency, energy saving, environmental protection, broad application prospect, and bringing of long-term economic and social benefits in future practical production.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an analysis and determination method for nitrogen content in alloys. Background technique [0002] Nitrogen is added to stainless steel as an alloying element, which can replace part of nickel-containing stainless steel. Human organs are allergic to nickel-containing production engineering materials and nickel is expensive. Nitrogen can replace it, which not only reduces production costs but also can reduce plasticity. Improve the hardness, strength and corrosion resistance of steel, and improve the stability of austenite. After nitrogen forms stable nitrides with silicon, molybdenum and other elements, the creep and durable strength of steel are improved, and a highly dispersed nitride layer can be obtained by nitriding the surface of steel parts, which can obtain good comprehensive mechanical properties. [0003] The content of nitrogen in ferroalloys changes due to smelting, h...

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Application Information

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IPC IPC(8): G01N33/20
Inventor 李晓云
Owner TAIYUAN HEAVY IND
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