From Wikipedia, the free encyclopedia
|This article does not cite any references or sources.|
Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2008)
Sheet metal embossing is a process for producing raised or sunken designs or relief in sheet metal. This process can be made by means of matched male and female roller dies, or by passing sheet or a strip of metal between rolls of the desired pattern.
The metal sheet embossing operation is commonly accomplished with a combination of heat and pressure on the sheet metal depending on what type of embossing is required. Theoretically, with any of these procedures, the metal thickness has change in its composition.
Metal sheet is drawn through the male and female roller dies producing a pattern or design on the metal sheet. Depending on the roller dies used, different patterns can be produced on the metal sheet. This pressure and a combination of heat actually "irons" while raising the level of the image higher than the substrate to make it smooth. The term "impressing" enables one to distinguish an image lowered into the surface of a material, in distinction to an image raised out of the surface of a material
In most of the pressure embossing operation machines, the upper roll blocks are stationary, while the bottom roll blocks are movable. The pressure with which the bottom roll is raised is referred to as the tonnage capacity.
Embossing machines are generally sized to give 2" of strip clearance on each side of an engraved embossing roll. Many embossing machines are custom-manufactured, so there are no industry-standard widths. It is not uncommon to find embossing machines in operation producing patterns less than 6" wide all the way up to machines producing patterns 70"+ wide.
- The ability to form ductile metals
- Use in medium to high production runs
- The ability to maintain the same metal thickness before and after embossing
- The ability to produce unlimited patterns, depending on the roll dies
- The ability to reproduce product with no variation
Commonly Used Materials
- Aluminium (all alloys)
- Aluminium (T1/T2)
- Cold rolled steel
- Galvanized steel
- High strength, low alloy, steel
- Hot rolled steel
- Steel (All Alloys)