At the production site in Orel quality control of manufactured products is carried out by the Quality Control Department. Welding operations are performed with different kinds of weld joints examination. These techniques are divided into two groups: non-destructive (when the weld joint is not broken) and destructive.
Severstal Steel Solution has a certified laboratory of ultrasonic inspection and carries out tests in compliance with all the required rules and regulations. According to the tests results our certified specialists prepare quality confirming documents, protocols and quality certificates.
- Visual and Dimensional Control
VDC is a very efficient and convenient way to identify various defects. This type of control refers to non-destructive methods and is based on getting initial information about the tested object with the help of optical instruments and measurement tools. In practice it is proved that this method of control is a reliable source of accurate information about the compliance of welded elements to technical specifications.
Visual inspection checks the quality of blank pieces and joints readiness for welding as well as the quality of welded joints.
Certified specialists from Severstal Steel Solutions with the help of visual inspection check all the products with welded joints in accordance with the set standards and requirements regardless of the application of other VDC types.
- Ultrasonic Testing (UST)
Ultrasonic inspection of welded joints refers to non-destructive methods and is an effective way to detect defects in welded joints and steel products at different depths. For different types of welded joints the corresponding ultrasonic testing techniques are applied.
Ultrasonic inspection detects surface and internal defects of metals and alloys, quality of products and welded joints. Certified specialists of Severstal Steel Solutions with the help of lab equipment examine products for compliance with the set standards and requirements and basing on the results provide UST protocols and quality certificates.
- Metallographic Examination
of Welded Joints
Some part of the welded joints is advisable to be exposed to destruction in order to get more reliable and accurate information about the properties of the joints. A macrographic examination is a study of a large section of a welded joint cut out of a welded plate or another product transversely to this joint. The studied surface of the sample usually includes an overall section of welding deposit with adjacent areas of heat effected zones and zones of the main unaltered metal. Macroexaminations detect defects like poor welding penetrations, cracks, pores, slag inclusions, coarse granulation of the main and deposited metal, structural discontinuity and others.
- Welded joints quality control on the automatic submerged arc
Large section is taken as a test cut out of a finished product.
Lincoln Electric DC-1000 + NR-5
Flanges 12 mm + web 5 mm
Type of connection
Three way joint
CВ-08ГА, diameter 4 mm
ESAB FLUX OK 10.71
- Welded joints quality control in areas where semiautomatic full
wire welding is applied
Welding of a column. Large section is taken as a test cut out of a finished product.
EWM Wega 501, M 2.20
10 mm + 5 mm + 8 mm
Type of connection
Three way joint
CВ-08Г2С, diameter 1,2 mm
AR (18%), co2 (82%)
- Welded joints quality control on the automatic submerged arc welding lines