The quality, reliability, durability of the product largely depend on the composition of the alloy used. Deviation from the specified chemical composition can lead to a negative change in properties.
Determination of the chemical composition is one of the most important directions of the production activity of the enterprise, allowing to ensure the stability of technological processes and the required product quality. Stabilization of the metal melting process is achieved both by standardizing the composition of the initial charge materials and by direct control and regulation of the melting process according to the composition of the used and manufactured products. The accuracy and reliability of the control meet the conditions of continuous production. Such requirements are provided by the automation of analysis and control, from the composition of the initial charge materials to the receipt of finished products of a given composition and properties.
To determine the chemical composition in the central plant laboratory of the plant, optical emission and X-ray fluorescent metal analyzers are used. Spectrometers are designed for quantitative analysis of the chemical composition of steels. For example, in carbon steels, you can determine the low content of elements such as carbon, silicon, manganese, phosphorus, sulfur.
The control of the chemical composition of steel is carried out during the acceptance of the metal supplied to the plant, on intermediate (ladle samples) samples during the production process, as well as for acceptance tests of finished products from steels of different grades.
The results of the control of the chemical composition of the metal are drawn up in the accompanying documentation and registered in the passport of the incoming control.
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