What is Sheet Metal Process>

What is Sheet Metal?

Sheet Metal Process

A piece of metal whose thickness is between 0.15mm to 6.35mm (depends upon area). Anything thinner is referred to as a foil and thicker is considered as a plate. Sheet thickness is generally measured in gauge. Greater the gauge number, thinner the sheet of metal. Sheet metal can be cut, bent and stretched into nearly any shape. Generally two types of operations are performed - Forming And Cutting.

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Types Of Sheet Metal Dies:-

1). Simple Die

Simple Die

Simple dies or single action dies perform single operation for for each stroke of the press slide. The operation may be cutting or forming operations.

2). Compound Die

Compound Die

In these dies, two or more operations may be performed at one station. Such dies are considered as cutting tools since, only cutting operations are carried out.

3). Combination Die

Combination Die

In this die also, more than one operation may be performed at one station. It is different from compound die, in this die a cutting operation is combined with a bending or drawing operation, due to that it is called combination die.

4). Progressive Die

Progressive Die

A progressive die has a series of operations. At each station, an operation is performed on a work piece during a stroke of the press.

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Types Of Sheet Metal Operations:-

1). Blanking

Blanking

A piece of sheet metal is removed from a larger piece of stock. Removed piece is useful in blanking and can't be considered as scrap.

2). Fine Blanking

Fine Blanking

A second force is applied underneath the sheet, directly opposite the punch. This technique produces a part with better flatness and smoother edges.

3). Piercing Or Punching

Piercing Or Punching

The typical punching operation, in which a punch pierces a hole into the sheet.Removed piece is scarp in this operation.

4). Trimming

Trimming

Punching away excess material from the perimeter of a part, such as trimming the flange from a drawn cup.

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5). Slitting

Slitting

Cutting straight lines in the sheet, no scrap is produced.

6). Shearing

Shearing

Shearing is defined as separating material into two parts. Is uses shearing force to cut the sheets.

7). Bending

Bending

Bending is a metal forming process in which a force is applied to a piece of sheet metal, causing it to bend at an angle form the desired shape.

8). Lancing

Lancing

Creating a partial cut in the sheet, so that no material is removed. The material is left attached to be bent and form a shape, such as tab, vent or louver.

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