Normalizing process of S355J2 steel plate: normalize the S355J2 steel plate in the bottom furnace, normalizing temperature is 880-910℃, holding time is 1.8-2.2min/mm, that is to get the required S355J2 + N steel plate. 355j2 + N steel plate is mainly used in large machinery manufacturing, equipment base, large welded steel structure, construction, bridge and other fields. With the continuous development of economy and the large-scale demand of equipment, the demand of ultra thick A588 grade A heavy plate, S355J2 + N steel plate is increasing gradually.
Compared with , boiler steel plates should have the following properties: (1) High medium temperature strength: low and medium pressure boiler drums use steel with a lower yield point, high pressure boilers use steel with a high yield point (2) Good plasticity, impact toughness, cold bending and welding performance (3) The notch sensitivity is small, that is, the sensitivity to the stress concentration caused by the opening of the steel plate surface and the welding of the pipe head is small,A588 grade A heavy plate.
A588 grade A heavy plate,The correct choice of billet type, section shape, size and weight are of great significance to steel rolling production Steel rolling production has certain technical requirements for raw materials, such as steel type, section shape, size, weight, and surface quality The consideration of these technical requirements is necessary to ensure the quality of steel It should also be specifically considered when determining and selecting the blank The rolling method can be divided into cold rolling and hot rolling according to the rolling temperature,A588 grade A heavy plate.
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The company specializes in heavy plate cutting, carbon steel pplate processing, carbon plate welding processing and sales of wide and thick steel plates It has high-quality CNC steel plate cutting and processing equipment, a professional technical personnel team, and supporting logistics distribution and after-sales service system BBN company provides customers with solutions at low prices, high quality, and fast response service,A588 grade A heavy plate.
