Chemical Analysis Method

 

Principle: Chemical analysis determines whether decarburization occurs by analyzing the chemical composition of the steel surface and interior. The main focus is on the change in the carbon content, because the essence of decarburization is the reduction of carbon on the steel surface. For example, a chemical dissolution method can be used. The steel sample is dissolved in an appropriate reagent, and then the carbon content in the solution is determined using a chemical analysis instrument such as a carbon - sulfur analyzer. The carbon content on the normal steel surface and interior is within a certain range. When the surface carbon content is significantly lower than the normal range, decarburization can be determined.

 

Operation Steps: Firstly, a certain mass of steel samples is accurately weighed. Samples are usually taken from different positions on the surface and interior of the steel. Then, the samples are placed in a suitable dissolution reagent, such as an acid solution (such as hydrochloric acid, nitric acid, etc.), to completely dissolve the steel. Next, a carbon - sulfur analyzer and other instruments are used to analyze the carbon content of the solution. Finally, the carbon content of the surface and interior samples is compared. If the surface carbon content is significantly reduced, it indicates that decarburization has occurred.

 

Scope of Application: It is applicable to situations where high accuracy of chemical composition is required, such as quality inspection institutions and scientific research laboratories. It can accurately measure the change in carbon content and accurately determine the decarburization situation, but the operation is relatively complex and requires professional instrument equipment and chemical analysis techniques.

 

 

 

Dimensions:

Thickness: 3-200mm

Width:1500-4000mm

Length:5000-15000mm

 

Spectroscopic Analysis Method

 

Principle: Spectroscopic analysis is based on the principle that each element has its specific spectral lines. When the atoms in the steel are excited (for example, by electric spark excitation), they will emit light with specific wavelengths. By analyzing the spectra of this light, the content of various elements in the steel can be determined. For decarburization detection, the main focus is on the change in the intensity of the spectral lines of the carbon element. In non - decarburized steel, the intensity of the spectral lines of the carbon element has a relatively stable value. When decarburization occurs, the intensity of the spectral lines of the carbon element weakens.

 

Operation Steps: Firstly, a spectroscopic analysis instrument such as a direct - reading spectrometer is required. After the surface of the steel sample is cleaned, the sample is placed on the excitation platform of the instrument. Then, the instrument excites the sample to make the atoms in the steel emit light. Next, the optical system of the instrument collects this light and decomposes it into a spectrum to analyze the intensity of the spectral lines of the carbon element. Finally, the detection results are compared with the spectral data of the steel in a normal state to determine whether decarburization has occurred.

 

Scope of Application: This method has the advantages of being fast, accurate, and non - destructive. It is suitable for the rapid detection of a large number of steel samples and is widely used especially in the quality control process of steel production. However, the price of the spectrometer is relatively high, and professional personnel are required for operation and maintenance.

 

 

 

 

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