Multilayer stainless steel sheets
Multilayer stainless steel sheet is rolled based on inexpensive low-alloy steel grades. Coating of the sheet serve as non-ferrous metals, for example aluminium or high-alloy stainless steel. Hot rolled pairs of such sheets gives a two-layer sheet. The top layer, more resistant to corrosion, protects the metal from moisture, industrial condensate, corrosive environment, This method allows to reduce the cost of production by saving expensive materials.
The inner padding from cheap low carbon steel is rolled between two sheets of high-alloyed hot method. Standard production technology of three-layer sheet is as follows. A couple of stainless steel plates of high thickness set in the mold. To avoid sintering, they are pre-coated chromium oxide, and then between these layers is filled with carbon steel. When edge sealed, the sheet is rolled to a predetermined thickness.
Between two sheets of high-alloy steel are placed two sheets of carbon steel separated by protective strips. Edge brewing, and the sheet is rolled. After rolling the leaves are separated from each other and subjected to heat treatment at a temperature of about 1250 °C. With this technology receive twice the double-layer stainless steel.
Industrial chemicals, food, petroleum refining, pulp and paper industry. Due to the high technological and operating characteristics, the multilayer sheets are widely used by engineering, thermal power, where the production process involves high temperatures I. aggressive environments. Thanks to such materials of new generation have the opportunity to improve the technology of production and to ensure long term reliable operation of the whole complex of equipment. Today multiwall sheets are also used in architecture and construction as a material for a designer finish.
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