Method for measuring contents of silicon, manganese, phosphorus, molybdenum, copper, titanium, magnesium, lanthanum, cerium and yttrium in raw cast iron

Abstract

The invention provides a method for measuring the contents of silicon, manganese, phosphorus, molybdenum, copper, titanium, magnesium, lanthanum, cerium and yttrium in raw cast iron. The method comprises the following steps: (1) sample pretreatment: weighing a sample, adding nitric acid, heating, dissolving and cooling in sequence, and then diluting and filtering to obtain a sample solution; (2) selecting a standard sample, repeating the treating process in the step (1), and adding elements to be measured to obtain a calibration solution; (3) measurement: respectively performing ICP-AES detection on the sample solution and the calibration solution, and quantifying by a calibration curve method to obtain the contents of silicon, manganese, phosphorus, molybdenum, copper, titanium, magnesium, lanthanum, cerium and yttrium in the sample solution. According to the method for measuring the contents of silicon, manganese, phosphorus, molybdenum, copper, titanium, magnesium, lanthanum, cerium and yttrium in the raw cast iron, the pretreatment operation is simple, convenient, quick and accurate; the instrument detection conditions are optimized; the analysis speed is high, the analysis result is high in stability, and the accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of chemical analysis of metal material components, in particular to a method for measuring the content of silicon, manganese, phosphorus, molybdenum, copper, titanium, magnesium, lanthanum, cerium and yttrium in raw cast iron. Background technique [0002] Pig iron, also known as pig iron or cast iron, generally refers to an alloy of iron with a carbon content of more than 2%. According to the different forms of carbon in pig iron, it can be divided into steelmaking pig iron, foundry pig iron and nodular cast iron. Pig iron has high carbon content, is hard in performance, wear-resistant, and has good castability, but is brittle and has almost no plasticity, so it can be cast but not forged. In addition to iron and carbon, raw cast iron also contains elements such as silicon, manganese, and phosphorus. The matrix is ​​complex and affects the quality of raw cast iron. Sometimes in order to effectively improv...

AI Technical Summary

Problems solved by technology

However, the main matrix element in raw cast iron is iron, and the content of matrix elements in the analyzed sample solution is high, and there is a matrix effect.

Moreover, iron and steel alloy elements are generally line-rich elements, and there is partial or complete overlap interference between spectral lines.

It can be seen that the matrix in raw cast iron is complex, and various elements interfere with each other. There are many difficulties in the simultaneous determination of multiple elements, and further research and exploration are still needed.

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