The Ncs Testing Technology Co., Ltd.

Qiaochu Zhang

Lei Yu

Yunhai Jia

Liangjing Yuan

Liang Sheng

Haizhou Wang

Cheng Jin

Xiaoke Hao

Baibing Li

Chunyan Zhang

Xiaofen Zhang

Shaoyin Li

An ultra-high-speed fully automatic precision spectral analysis system for rare earth metals and its working method is disclosed. The system includes a central control server, a precision numerical control rotary table communicatively connected with the central control server, a sample loading-clamping device, an automatic weighing device, an automatic ranging device, an analyzing surface machining device, a rare-earth spark emission spectrometer, and an automatic marking device; the sample loading-clamping device is arranged to fix a test sample of a rare earth metal, the automatic weighing device is arranged to weigh the test sample in real time, and the automatic ranging device, the analyzing surface machining device, the rare-earth spark emission spectrometer, and the automatic marking device are set up around the precision numerical control rotary table to perform the corresponding work processes respectively.

Ultra-high-speed fully automatic precision spectral analysis system for rare earth metals and working method thereof

A spark spectrometry for inclusions content distribution on the surface of large size metallic materials, comprising the following steps: analyzing the surface of large-size metallic materials by spark discharge continuous excitation scanning, obtaining a mixture intensity distribution data of the solid solution and inclusions of an element on the surface of the large-size metallic materials; the relative frequency distribution diagram of spectral intensity is subjected to peak fitting of normal distribution and Gumbel distribution, obtaining an extreme value distribution data of spectral intensity of the inclusions; a size information of the inclusions in a small sample and that of the largest inclusions are correlated with the spectral intensity distribution data of inclusions, obtaining a result of content distribution of the inclusions on the surface of the large size metallic materials. The invention can quickly obtain accurate distribution information of inclusions of various elements on the surface of metallic materials.

Spark spectrometry for inclusions content distribution on the surface of large size metallic materials

A measurement deviation correction method and system for spark discharge analysis of a large-size metal material includes: performing line-by-line scanning measurement on a surface of the material to obtain a line component content, performing in-line correction on the line component content by adopting a line linear fitting model, and performing inter-line correction by taking a total average value obtained by eliminating an extreme value from a line component content distribution to obtain an inter-line corrected component content; performing column-by-column scanning measurement on the surface of the material to obtain a column component content, performing in-column correction on the column component content by adopting a column linear fitting model, and performing inter-column correction by taking a total average value obtained by eliminating an extreme value from the column component content; and coupling the inter-line corrected component content and the inter-column corrected component content to obtain an optimal measurement component content.

Measurement deviation correction method and system for spark discharge analysis of large-size metal material

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Beijing, China

Qiaochu Zhang