Steel Type Selection

Stainless steel must be selected according to usage and environment in order to extend the life cycle and maintain the fine exterior.

Storing and transporting

Stainless Steel has good corrosion resistance because the surface has a passivity layer and needs to be handled with care to protect and maintain this film.

Storing

When storing, it is important to avoid exposure to moisture, dust, oil, lubricant, in order to prevent rust and reduced/lowered corrosion resistance when welding. When exposed to moisture, the pace of corrosion accelerates when the protective film is not applied. Store in a dry and well ventilated place preferably in the original package covering. Materials with protective film should be kept away from direct sunlight and the film should be inspected regularly. If the film shows signs of deterioration (film lifespan is approx.3 months), it should be replaced immediately. When packaging materials including paper get wet, they should be removed immediately to prevent surface corrosion.and maintain this film.

transporting

When transporting, rubber or wood support/underpinning should be used to avoid surface scratching. Special stainless equipment should be used and to avoid smudges from fingerprints, gloves should be worn.

Forming and Construction

Cut and Press

For punching and shearing, more pressure is required and when cutting the space between the dice and blade should be precise to prevent hardening of the pads and work Plasma and Laser cuts are recommended; if gas or arc cutting is unavoidable, grinding and heat treatment must be applied as necessary.

Bending Process

Bending of sheets is (thickness of 2mm or less) possible for 180ˇ? flat working. However, to reduce cracking of bent areas it is recommended to apply the same inner radius as the sheet thickness. Bending of plates (thickness of 200mm and over) in rolling direction should be twice the thickness of the plate; bending in a tight angle to rolling direction should be 4 times the curvature radius. When bending, to prevent cracking of the welded areas, surface grinding is recommended.

Drawing

When deep drawing, friction and surface damage is likely to occur. Therefore, lubricants must be pressure resistant and heat resistant and after drawing, molding grease on the surface must be removed thoroughly.

Welding

Grease, moisture, and paint should be removed to enable welding. The welding bar must be selected for each steel. When tack welding, pitch must be shorter than carbon steel and when removing slag, a stainless brush must be used. After welding, grinding treatment and cleaning process are needed to prevent local corrosion and diminished hardness.

Notice When Building

Stainless steel is shipped with a protective film to prevent scratching and contamination, but over time problems related to adhesive residues and heat treatment can occur. When removing film after molding, surface must be cleaned. Tools should be stainless steel tools and when used on other steels, the tool must be cleaned. Make sure tiles and cleaning detergents do not come in contact with the stainless steel surface. When stainless steel comes in contact with such materials, it must be cleaned immediately. At construction sites, stainless steel should not be exposed to cement and dust. After construction, the stainless steel must be cleaned with detergent and water. Chemically colored, etched, painted and coated materials are susceptible to discoloration and surface scratches and repair work is difficult.