Sheet Metal Bending and Shear | Metal Fabrication

Sheet metal forming refers to the working on sheet metal to generate useful shapes.Sheet metal are usually made by forming material in a cold condition, although many parts formed in a hot condition because the material when heated, it has a lower resistance to deformation.Strips or blanks are very often used as raw materials, and formed on presses or bending machines using appropriate tools. The shape of the part generally corresponds to the shape of the tool.




 
Characteristics of Sheet metal are: high productivity, highly efficient use of material, easy servicing of machines, the ability to employ workers with relatively less basic skills, and other advantageous economic aspects.
 
Parts made from sheet metal have many attractive qualities: good accuracy of dimension, adequate strength, light weight, and a broad range of possible dimensions, from minute parts to large parts of aeroplane structures.The materials suitable for sheet metal forming should have sufficient ductility so that it will not break or crack during operation. If failures are likely to occur, intermediate annealing operations and additional steps in the process may be necessary.
 
Work-hardening steel such as stainless steels limit the amount of drawing and bending that may be performed in one operation. Low-carbon steel is the most commonly used material for press-working operations because of its good formability.For deep drawing, steel with 0.05 to 0.08 per cent carbon and 0.25 to 0.50 per cent manganese are suitable. Non ferrous metals such as aluminium alloys, brass, bronze, monel metal, silver alloys, etc. are also widely used for production useful products through sheet metal forming.


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