Preparation method of high-carbon stainless steel standard sample

Abstract

The invention discloses a preparation method of a high-carbon stainless steel standard sample, belonging to the field of detection of metallurgical samples. The preparation method disclosed by the invention comprises the steps of designing a casting mould, baking the casting mould and a steel ladle, selecting components, controlling the process of a casting process, demoulding, detecting physical performances, processing the sample, detecting the homogeneity of chemical components, carrying out deterministic analysis and determining effective height. The physical performances, the structural state, the component range and the homogeneity of the standard sample prepared by the invention can be satisfied; furthermore, the preparation cost is reduced; the sampling number is increased; at least 100 standard samples can be prepared every time; the number is above 20 times of that of die casting sampling; the preparation number can satisfy current production requirements; and thus, the standard sample preparation process has very high practical value and great popularization value in other matter test rooms.

Description

technical field [0001] The invention belongs to the detection field of metallurgical samples, in particular to a method for preparing high-carbon stainless steel standard samples. Background technique [0002] The spark source atomic emission spectrometer is the main equipment for sample analysis in the furnace smelting process. It is necessary to use the control sample as the carrier of the value transfer and report the analysis results. The use of high-quality spectral control samples will improve the accuracy of furnace detection, so as to accurately guide the batching of the furnace smelting process. The chemical composition of steel in different periods of stainless steel smelting is very different, especially the composition of molten steel melted in the smelting furnace is different from other periods, and the carbon content is very high, which directly affects the accuracy of spectral analysis of other elements. Therefore, the same smelting period must be used. Cont...

AI Technical Summary

Problems solved by technology

The control samples prepared by this method have many defects such as small sampling volume, low qualified rate of standard sample preparation, and poor uniformity between blocks.

At present, with the continuous increase in the output of steel products and the large-scale use of automatic spectral detection lines in front of the furnace, the demand for control samples has increased sharply, and the traditional preparation methods are far from meeting the needs of production.

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