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Method for analyzing chemical composition of seamless steel pipe with carbon and sulfur analyzer

12-03-2020 12:28 PM CET | Industry, Real Estate & Construction

Press release from: Nansteel Manufacturing Co.,Ltd

Method for analyzing chemical composition of seamless steel

Steps of carbon and sulfur analyzer to analyze chemical composition of seamless steel pipe

The carbon-sulfur analyzer analyzes the chemical composition of seamless steel pipes. The principle is that the carrier gas (oxygen) is purified and then introduced into the high-frequency furnace. The sample is oxidized by oxygen at the high temperature of the combustion furnace, so that the carbon and sulfur in the seamless steel pipe sample is oxidized to CO2 CO and SO2, the generated oxides pass through the dust removal and water purification device, and are loaded into the sulfur detection cell by oxygen to determine sulfur. After that, the mixed gas containing CO2, CO, SO2, and O2 enters the heated catalyst furnace, where it undergoes catalytic conversion of CO→CO2, SO2→SO3. After this mixed gas enters the desulfurization reagent tube, Import the carbon detection cell to measure carbon. The residual gas is discharged from the analyzer to the outdoors. At the same time, the analysis results of carbon and sulfur are displayed on the LCD of the host in the form of %C and %S.

Carbon and sulfur analyzer to analyze chemical composition of seamless steel pipe

The infrared carbon and sulfur analyzer is suitable for all kinds of steel (including carbon structural steel, high-quality carbon structural steel, low-alloy high-strength structural steel, stainless steel, cast steel, etc.). It is also suitable for the analysis of various ferroalloys, pig iron, limestone, glass, ceramics and other inorganic materials. Since the spectral analysis is the surface analysis of the sample, and the carbon-sulfur analysis is a deep sampling during the sample sampling process, it can more accurately reflect the characteristics of the sample. The currently used carbon and sulfur analyzer is the CS-444 of American Reco Company, and its instrument has the following analysis characteristics:

Analysis range: (based on 1g sample) carbon: 0.6ppm-6%; sulfur: 0.6ppm-0.4% (the analysis range can be expanded by reducing the sample weight); accuracy: carbon: 0.3ppm or  0.5%RSD sulfur: 0.3ppm or 1.5%RSD; Readable position: carbon/sulfur 0.001ppm; calibration: linear, single point, multi-point, manual; analysis time: 40 seconds

The carbon-sulfur analyzer has good linearity. The equipment must be maintained and calibrated before the analysis work, and the data shall be verified with reference materials. This analysis method is also a comparative analysis method. The analysis results of unknown samples can be rounded off according to the deviation of the standard material, and the rounded analysis results will be reported after confirmation.

In order to complete a large number of production inspection tasks, and according to the characteristics of the current seamless steel pipe production structure and future development direction, some large-scale precision instruments are updated. The analytical instruments used in the current analysis mainly include: direct reading spectrometer, carbon and sulfur analyzer, X Ray fluorescence, potentiometric titrator, ultraviolet-visible spectrophotometer, atomic absorption spectrometer, plasma emission spectroscopy, plasma emission mass spectrometry, etc. At present, these instruments can complete the corresponding seamless steel pipe analysis element detection task according to different analysis methods and principles. To complement each other, broaden the scope and field of analysis.

Xueshi Rd, Yuelu Technology Industrial Park, Changsha,China

Nansteel Manufacturing Co.,Ltd, today an ISO - 9001:2008, certified Company. are a prominent Manufacturer, Stockist and Exporter of carbon steel pipe, stainless steel pipe, structural section, fittings and OCTG in various materials including Stainless Steel, Carbon Steel, Alloy Steel. in standard size and as per our customers’ requirements and drawings. Products from Nansteel are used widely in Nuclear Power Plants, Thermal Power Stations, Atomic Power Plants, Oil & Gas, Petrochemical, Fertilizers, and Chemicals & Pharmaceuticals.Together with the know-how which technical power and the many years and spontaneity service, we supply the product of good quality with economies of scale to the customer. Moreover, it had become the company compared is equipping the best role of competitive power improvement with the customer. We grew as the novelty one enterprise grows the partner relationship which goes out it pursues to be strong, continuity. Nansteel is a growth-oriented company, providing exceptional quality and service with competitive pricing on all of our products. We take pride in our employees, products and service, all of which have contributed to years of growth. This philosophy has earned us a solid reputation for excellence within our industry. For more,visit:

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