Sheet metal

What is SHEET-METAL?

Sheet metal

Sheet-Metal is a metal made in thin, flat pieces by an industrial process.

It is one of the basic forms used in metal and it can be cut and apply in different sizes.

Countless everyday items are made from sheet metal.

Thickness can vary greatly; Very thin sheets are consider foil or leaf, and the pieces are consider thicker than 6 mm (0.25 in) thick, which is called plate steel or “structural steel”.

Sheet metal is available in flat pieces or coil strips.

The coil is made by running a continuous sheet of metal through the roll slit.

Sheet-Metal is a metal made in thin, flat pieces by an industrial process.

There are many different metals which can be made in sheet metal

  • Aluminum
  • Brass
  • Copper
  • Steel
  • Tin
  • Nickel
  • Titanium.

For decorative use, some important sheet metals include Silver, Gold, and Platinum

Where we used SHEET-METAl?

Sheet metal is used in automobile and truck (lorry) bodies, plane fuses and wings, medical tables, terraces for buildings (architecture) and many other applications.

With high magnetic permeability, the sheet metal of iron and other materials, also known as laminate Steel Corps, has applications in transformers and electric machines.

Historically, an important use of sheet metal was in the plate armor worn by horseback armor, and there are many decorative uses in sheet metal, including horse tack.

Sheet metal workers are also known as “tin bassers” (or “tin knockers”), a name that is produced by the hammer of the sides of the border when installing a tin roof.

Forming Processes

1.Bending

Bending

Source:- WIKIPEDIA

Bending is a manufacturing process that produces a V-shaped, U-shaped or channel size with a straight axis in dummy materials, the highest sheet metal

Commonly used equipment include box and pan brake, brake press and other special machine press.

2.Curling

Curling is the process of making a sheet metal that is used to make edges in hollow rings.

It is the process of making a sheet metal that is used to make edges in hollow rings.

The other parts are curl to do their primary work, such as the door hinges.

3.Decambering

It is a metal process to remove chamber, horizontal turn from a strip-shape material.

This can be done for a finite length segment or coil.

It resembles the plane of the flattening process, but is on the deform edge.

4.Deep Drawing

Deep Drawing

Source:- WIKIPEDIA

Drawing is the process of making one where the metal is spread in a form or dies.

The depth of the part being made in the deep diagram is more than half of its diameter.

It is used to make automotive fuel tank, kitchen sink, to-piece aluminum can etc.

Deep drawings are usually called draw reductions. The greater the depth, the more deduction is required.

Deep drawing can be accomplish with short cuts by heating the workpiece, for example in the formation of the sync.

In many cases, the material is rolled on the mill in both directions to help in deep drawing.

It leads to a more uniform grain structure which limits tearing and is refer to as “draw quality” material.

5.Expanding

The extension is a process of cutting or stamping slits like a stretcher bond in bricks in an alternative pattern, and then open the sheet in a conforming fashion.

It is used in applications where air and water flow is desired when light weight is desire at the cost of a solid flat surface.

A similar procedure is used in other materials such as paper to make low-cost packing papers with better-supporting properties than flat paper alone.

6.Hemming and seaming

Hemming and seaming

Source:- WIKIPEDIA

Hemming and seaming are two identical metal processes, in which a sheet metal edge is roll on itself.

Hemming is a process in which the edge is flown in itself,

while one seam connects to the edges of the two materials.

 Typically one is used to strengthen the edges, burr and rough edges and improve the appearance.

Generally, in the food industry, canned goods, on amusement park cars, metal roofs (with roof seamer) and used in the automotive industry.

TYPES:

There are two types of hemmed edges:

  • Closed hem 
  • Open hem

 The closed hem is completely flush, while an open pole has an air pocket in the turn. The main difference is that the tonnage required for a closed hem is much higher than an open hem.

7.Hydroforming

Hydro Forming

Source:- WIKIPEDIA

Hydroforming is a process that corresponds to the deep drawing, in which the part is constructs by dragging the blank on a stable die.

The required power is generated by the direct application of workpiece or high bladder, which is in contact with workpieces, rather than in the mechanical or hydraulic press, rather than the running portion of the die.

Unlike deep drawing, hydroforming usually does not include draw reduction – the piece is form in one step.

8.Incremental Sheet Forming

Single-point-incremental-sheet-forming

Source:- WIKIPEDIA

The process of creating incremental sheets or making the ISF is basically the process of making sheet metal working or sheet metal.

 In this case, a sheet is made into a final shape by a series of processes in which small incremental distortion can be done in each series.

9.Laser Cutting

sheetmetal lesae cutting

Source:- WIKIPEDIA

Sheet metal can be cut in different ways, from hand tools like tin tools to very large power scissors.

With the advancement in technology, sheet metal cutting has turned towards computers for precise cutting.

Many sheet metal cutting operations are based on the numerically controlled (CNC) laser cutting or multi-tool CNC punch press on the computer.

10.Press brake forming

press sheetmetal

Source:- WIKIPEDIA

It is a form of bending that is used for the production of long, thin sheet metal parts.

The metal bending machine is called a press brake.

At the lower part of the press, there is a V-shaped drain which is called die.

In the upper part of the press, there is a punch that presses the sheet metal in the V-shape die, which bends it.

11.Punching

Punching is a formation process that uses a punch press to emphasize a tool, called punch, to make a hole through the workpiece.

Punching applies to many types of materials, which come in sheet form including sheet metal, paper, vulcanise fiber and some forms of plastic sheets.

Punch often dies passing through the work.

A scrap slip from the hole is stored in the dying process.

Depending on the material, this slug can be recycle and can be reuse or discard.

12.Rolling

Rolling is the process of making metal work or metal. In this method, the stock is pass through one or more pairs of rolls to reduce the thickness.

It is used to make a thickness uniform.

It is classified according to its temperature of rolling.

  1. Hot Rolling: This temperature is above the recrystallisation temperature.

 

  1. Cold Rolling: This temperature is below the recycling temperature.

 

  1. Warm rolling: This is used in temperature between hot rolling and cold rolling.

13.Spinning

metalspining

Source:- WIKIPEDIA

Spinning is used to make a piece of sheet stock in a rotating form (mandrel) to form tubular (axis-symmetric) parts.

Rollers or rigid equipment suppresses the stock against the form, drag it until it fills the size of the stock form.

Spinning is used to make rocket motor casing, missile nose cones, satellite dishes, and metal kitchen funnels.

14.Stamping

stamping

Source:- WIKIPEDIA

Stamping (also known as pressing) is the process of placing flat sheet metal in a stamping press in blank or coil form, where a device and die surface make the metal in a pure shape.

15.Water Jet Cutting

Water jet cutting

Source:- WIKIPEDIA

A water jet cutter, also known as waterjet, is a device capable of controlled alarms in metal or other materials using high velocity and pressure water jet, or a mixture of water and an abrasive material .

Water jet cutter, also called water jet or water jet, is an industrial tool capable of cutting various types of materials using very high pressure jets of water or water and an abrasive material.

16.Wheeling

englishwheel

Source:- WIKIPEDIA

 The process of using English Wheel is called wheeling. This is basically the process of making metal work or metal.

The English Wheel is used by a craftsman to make compound curves from a flat sheet of metal of aluminum or steel.

It is expensive because highly skilled labor is required.

It can produce different panels by the same method.

A stamping press is used for high numbers in production.

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