The Development Of The National Standards Sample On The Cast Alloy Iron Spectral Analysis

In the physics and chemistry analysis, the standard sample to controls the analysis quality and the enhancement analysis result accuracy has the extremely vital significance. Our country at present the spectral standard sample research and the manufacture also mainly is restricted in the cast steel and the part non-ferrous metal, it could not meet the need of market by far. The cast iron spectral analysis as a result of develops especially difficultly with the standard sample has become now in a spectral analysis technology big technical difficulty.Because the domestic cast alloy iron spectrum standard sample at present does not have foreign inclusion element many standard samples, only can depend upon the spectrum working curve regarding this kind of sample definite value to extend naturally determined, when in the working curve spot in a straight line, naturally extends incompletely turns not definite. Moreover uses the intensity of spectral line which the high content the standard produces to be big, but the low content sample produces the intensity of spectral line is small. When both phase difference big, produces the error is big. Causes the sample determination reliability to reduce greatly, has the possibility to provide the wrong information to the production process. Which is unable to carry on the correct monitoring to the production process, finally causes the product the quality to guarantee with difficulty. Therefore the development of the cast alloy iron spectrum standard sample has the vital significance to instruct the analysis and the production, which is to fill domestic blank project.This research cast alloy iron standard sample through test specimen smelting and the casting, the uniform examination, chemistry definite value, the contrast analysis and erroneous processing and so on four stages, has completed the standard sample applicable scope broad application prospect good development. This is in the advanced level in the world cast alloy iron praise development analysis. In the domestic present standard sample has not included the B element also the alloying element characteristic two value comprehensive cast alloy iron standard sample. Only can depend upon the spectrum working curve regarding this kind of sample definite value to extend naturally determined that, which is easy to have the analysis error. This research cast alloy iron standard sample development through the standard sample configuration, the standard sample uniformity examination, chemistry definite value, the contrast analysis and erroneous processing and so on four stages, develops the cast alloy iron series spectrum standard sample, to instructs to analyze and to reduce all the analysis cost to have the vital significance, has filled the domestic blank.