Today aluminum is used in almost all industries and its share continues to grow. Due to the light weight, non-susceptibility to corrosion and high ductility, aluminum sheets are practically indispensable in machine, ship and aircraft construction.
Manufacturing of sheet aluminum
To obtain aluminum sheets with a thickness of up to 6 mm, the blanks go through two stages, these are:
cold deformation (rolling), to obtain thinner, up to 6 mm, sheets.
The high plasticity of aluminum makes it possible to obtain the necessary products after cold working.
Sheets of pure aluminum are instantly covered with a thin film of aluminum oxide, which reliably prevents it from corrosion and interaction with other substances. However, the industry often uses various aluminum alloys, regulated by the GOST 21631 standard. Such alloys improve the required characteristics of aluminum sheets.
Properly manufactured sheet aluminum should be free of any visible surface defects, such as cracks, bubbles, corrosion spots and tears. Burn marks are also unacceptable. The surface of the sheet should be uniformly glossy or matt, depending on the grade of the alloy.
Various industries that consume aluminum sheets require the production of aluminum sheets in non-standard designs. These include, for example, perforated aluminum.
The perforated sheet can have a thickness of 0.5 to 6 mm, with various types of perforation: round, square and slotted.
The second non-standard way of making aluminum sheets is corrugated sheet. The surface of the corrugated aluminum sheet is matt and rough with a convex, repetitive pattern. This surface has two noticeable advantages:
it increases the heat dissipation area and therefore is in demand in refrigeration units and radiators.
it improves grip. This is important for anti-slip surfaces used in transport..