Laser-induced breakdown spectrograph for rapid analysis of metallurgical components and analysis method therefor

A technology of laser-induced breakdown and composition analysis, applied in the field of laser-induced breakdown spectrometer and analysis, which can solve the problems of low cost of use

Inactive Publication Date: 2012-10-24
AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In summary, there is no device that can adapt to different melt temperatures, can measure multiple elements at the same time, and has a low-cost rapid composition measurement system in front of the furnace.

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  • Laser-induced breakdown spectrograph for rapid analysis of metallurgical components and analysis method therefor
  • Laser-induced breakdown spectrograph for rapid analysis of metallurgical components and analysis method therefor
  • Laser-induced breakdown spectrograph for rapid analysis of metallurgical components and analysis method therefor

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Embodiment Construction

[0048] Next, use the device and method of the present invention to analyze the contents of C and Mn in ordinary carbon steel.

[0049] figure 1 It is a specific embodiment of the device of the present invention, wherein nanosecond laser 1, multi-channel photoelectric direct reading spectrometer 2, synchronous control device 3, component analysis computer 4, mirror 5, focusing lens 6, sample chamber 7, sample Container 8 , argon supply system 9 , collecting lens 10 , optical fiber 11 .

[0050] Nanosecond laser 1 adopts Nd:Yag Q-switched pulsed laser, wavelength 1064nm, pulse width ≤ 8ns, pulse energy 150mJ, works in single shot mode, beam diameter 6mm;

[0051] The delay time of the synchronous control device 3 is 1us;

[0052] The argon pressure of the argon supply system 9 is 0.15MPa;

[0053] Optical fiber 11 core diameter 400um, anti-ultraviolet treatment, armor package, 1 meter long;

[0054] Focusing lens 6 adopts the convex lens of focal length 30cm, diameter 7cm; ...

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Abstract

The invention discloses a laser-induced breakdown spectrograph for rapid analysis of metallurgical components and an analysis method therefor, and belongs to the technical field of metallurgical component analysis. The laser-induced breakdown spectrograph comprises a nanosecond laser, a multi-path photo-electric direct-reading spectrometer, a synchronous control device, a component analysis computer, a reflector, a focusing lens, a sample chamber, a sample container, an argon supply system, a collection lens and an optical fiber. The nanosecond laser and the component analysis computer are connected by a cable. The component analysis computer and the multi-path photo-electric direct-reading spectrometer are connected by a cable. The multi-path photo-electric direct-reading spectrometer and the synchronous control device are connected by a cable. The synchronous control device and the component analysis computer are connected by a cable. The analysis method comprises establishment of all non-matrix element working curves and measurement of all non-matrix element content values of unknown samples. The laser-induced breakdown spectrograph and the analysis method have the advantage that in detection analysis, accurate detection results can be obtained in 1 minute without pretreatment on a sample and the precision satisfies on-site analysis requirements.

Description

technical field [0001] The invention belongs to the technical field of metallurgical component analysis, and in particular provides a laser-induced breakdown spectrometer and an analysis method for rapid analysis of metallurgical components. Background technique [0002] In the process of metal smelting, in order to ensure the quality, multiple pre-furnace composition analyzes must be carried out. Currently, the commonly used rapid analysis methods are mainly spark photoelectric direct reading spectroscopy and fluorescence spectroscopy. For each analysis, it is necessary to take samples, send samples, grind samples, and test, and it takes 4 minutes at the fastest to get the results. This reduces the efficiency of analysis, increases energy consumption, and is difficult to meet the requirements of modern smelting production. [0003] For this reason, metallurgists have continuously developed rapid analysis methods for metallurgical composition, and these rapid analysis metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63
Inventor 吴少波李潘杨小军孙彦广于立业张云贵苏胜石
Owner AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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