The most important and most basic elements in steel are the five major elements of carbon, sulfur, silicon, manganese and phosphorus. The content of the five major elements directly affects the performance and grade of the steel. Among them, carbon and sulfur are important elements in determining the specifications and quality of steel products. It is also the most important measuring element of metal element analyzers.
Determination of carbon content and sulfur content by metal element analyzer
The most important and most basic elements in steel are the five major elements of carbon, sulfur, silicon, manganese and phosphorus. The content of the five major elements directly affects the performance and grade of the steel. Among them, carbon and sulfur are important elements in determining the specifications and quality of steel products. It is also the most important measurement element of the metal element analyzer. Carbon with a carbon content higher than 1.7% is called cast iron, and steel with less than 1.7% is called high carbon steel. Carbon content is higher than 0.6%. The carbon content is 0.25%-0.60% called medium carbon steel, and less than 0.25% is called low. Carbon steel.
How to determine the carbon and sulfur content in steel?
First, the sample is burned into oxygen in a high-temperature furnace to generate and escape CO2 and SO2 gas, so as to separate the carbon and sulfur from the metal elements and their compounds. The methods for determining the CO2 and SO2 contents are as follows:
(1) Volumetric method: The gas volume method and the non-aqueous titration method are commonly used, and the sulfur content is determined by an iodometric method and an acid-base titration method. Among them, the gas volume method measures carbon and iodine amount of statutory sulfur, which is fast and accurate. It is the most commonly used method for the joint determination of carbon and sulfur in China. The accuracy of stainless steel "target=_blank> stainless steel analyzer, the lower limit of carbon content is 0.050%, sulfur content The lower limit is 0.005%.
(2) Infrared method: The determination of carbon and sulfur by infrared method is also accurate, rapid and sensitive. The infrared instrument used is high in automation and the price is high.
(3) Determination of carbon and sulfur in metals, as well as ICP method, X-ray fluorescence method, mass spectrometry, chromatography, activation analysis, etc. The sensitivity of some methods can reach 10-10%. The generation and development of high-speed analysis The requirements and conditions at the time were related.
In the steel-making furnace, we must race against time and demand high speed. The core of the analysis of metal element analyzers is the five elements in steel. The focus of the five elements is the analysis of carbon and sulfur. Now the instruments and methods of elemental analysis, although involving various fields, the sales volume and turnover of analytical instruments for carbon and sulfur. It accounts for more than 70% of high-speed analytical instruments.
For more product information, please visit the company website.
High-frequency infrared carbon and sulfur analyzer http://
Infrared carbon sulfur meter http://
Element Analyzer http://
Multi-element analyzer http://
Spark direct reading spectrometer http://
Carbon and sulfur analysis instrument http://
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