Measurement method of contents of niobium, vanadium and titanium elements in nitralloy
A technology of nitrided alloy and element content, applied in the determination of titanium content, vanadium, and niobium in nitrided alloys, can solve the problems of inaccurate detection of niobium, vanadium and titanium, and achieve the effect of ensuring accuracy
Inactive Publication Date: 2017-11-24
BEIJING SHOUGANG CO LTD
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[0003] The present invention solves the technical problem that niobium, vanadium and titanium elements in nitrided alloys cannot be accurately detected by providing a method for determining the contents of niobium, vanadium and titanium elements in nitrided alloys
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[0024] The embodiment of the present invention provides a method for determining the contents of niobium, vanadium, and titanium elements in nitrided alloys, which solves the technical problem that niobium, vanadium, and titanium elements in nitrided alloys cannot be accurately detected, and meets the requirements of niobium, vanadium, and titanium elements in nitrogen-containing steel smelting. Production control requirements of vanadium and titanium elements.
[0025] In order to solve the above technical problems, the general idea of the embodiments of the present invention is as follows:
[0026] The invention provides a method for determining the contents of niobium, vanadium and titanium elements in nitrided alloys, comprising:
[0027] Weigh the nitrided alloy powder sample to be tested, add concentrated HNO 3 , concentrated HCl, concentrated HF and 1+1H 2 SO 4 The mixed acid was used to dissolve the sample by microwave digestion;
[0028] Using the microwave dige...
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Abstract
The invention discloses a measurement method of contents of niobium, vanadium and titanium elements in nitralloy, and belongs to the technical field of the detection and the analysis of alloying elements. The measurement method comprises the following steps of weighing and taking a to-be-measured nitralloy powder sample, adding mixed acid of thick HNO3, thick HCl, thick HF and 1+1H2SO4, and dissolving the sample by adopting a microwave digestion method; dissolving the to-be-measured sample into multiple portions in a parallel manner, adding niobium, vanadium and titanium standard solutions of different concentrations into the multiple portions of dissolution solutions respectively, and fixing volumes for measurement; measuring the volume-fixed dissolution solutions by adopting an inductively coupled plasma mass spectrometer, and analyzing the contents of the niobium, vanadium and titanium elements in the sample, wherein 103Rh is adopted as an internal standard element; the power of plasma is 1,300W to 1,500W; the sampling depth is 13mm to 17mm. The method is used for realizing the accurate measurement of the contents of trace-amount niobium, vanadium and titanium in the nitralloy, and meets the production control demand of the niobium, vanadium and titanium elements when nitrogen-containing steel is smelted.
Description
technical field [0001] The invention relates to the technical field of detection and analysis of alloy elements, in particular to a method for determining the contents of niobium, vanadium and titanium elements in nitrided alloys. Background technique [0002] Generally, iron and steel smelting process needs to add ferroalloy to adjust the chemical composition of molten steel to meet the special properties of steel. Among them, ferrosilicon nitride and silicon manganese nitride alloy are the main raw materials for smelting nitrogen-containing steel. Niobium, vanadium, and titanium residual elements in ferrosilicon nitride and silicon-manganese nitride alloys will affect the control of niobium, vanadium, and titanium components in the smelting of nitrogen-containing steel, and ultimately affect the performance of the steel, so accurate inspection is required. However, due to the special material structure of ferrosilicon nitride and silicon manganese nitride alloy, it is diff...
Claims
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IPC IPC(8): G01N27/62G01N1/44
CPCG01N1/44G01N27/62
Inventor 杜士毅王贵玉费书梅崔全法顾红琴庞振兴刘佳
Owner BEIJING SHOUGANG CO LTD