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Author: industrialsaver | Total views: 105 Comments: 0
Word Count: 644 Date: Wed, 20 May 2009 7:59 PM

Brake Bending & Cold Forging And Their Different Processes

Brake bending is often referred to as press brake bending. It is commonly described as the bending of a metal sheet on press brakes. Straightforward as the process may sound, the complexities arise in the determination of the proper size of materials or tools to complete the output. This being so, it is but relevant to know more about the different processes to produce brake bends.

The coining process

This brake bending process came from the idea of minting coins. A 90 degree bend will only be obtained when a high amount of pressure is applied on the material. While the process is extremely accurate and repeatable, there is a tendency that it may crack or break on the outside radius.

The bottom bending process

Bottom bending is a brake bending process that allows the punch to travel towards the bottom of the pressing tool. This is highly favorable than the coining process since it requires lesser tonnage. A downside of the technique is seen because there is a need to use different tooling techniques in order to get hold of or control the spring.

The air bending process

Last among the popular brake bending processes is air bending. Also known as three point bending, this technique is said to be the most flexible of all press brake bending processes. Even at a very low tonnage, the desired output from the process will already be derived. With only one tool to use, the material may bend in a variety of angles.

Brake bending is commonly applied to metal sheet bending as well as box and pan brakes. Using high grade materials during the operation will make the process all worth it. This is said to prevent the possibilities of marring during the operation. A manufacturer should carefully choose among variables before selecting a process.

Cold forging is a process in metal working that basically makes use of a pressing tool or a die. Whatever the shape of the pressing tool used in the process will also be the shape of the output. It is usually done in room or near room temperature. At some points, it is also known as cold heading.

Basic cold forging process

The simplest form of the cold forging process evolves on some steps. It starts when a bar or wire stock is placed at the stamping or pressing tool. The most common results are nails, screw with a head or a bolt. Once these outputs undergo another cold heading process, the shape may be changed to other forms. The most common examples are the heads of screw drivers or knurls.

More complicated cold forging processes

Aside from the process described above, there are other complicated processes behind cold forging. These things are described as follows

Forward Extrusion . A punch is used in order to push the billet through a pressing tool. The material flows in a similar direction as that of the punch. This is commonly used in reducing wall thickness as well as in the production of solid shapes like circles, triangles and rectangles.

Backward Extrusion . Unlike in forward extrusion, this process takes the opposite direction going to the upper portion of the punch. This is famous in the production of inner and outer circular diameters or rectangles forming around a circle.

Side Extrusion . This process apparently goes in a sideways direction from the punch.

These are among the popular processes behind cold forging. Ironing, nosing, radial forging and upsetting may also be involved. A combination or a sequence of these processes may be employed in the production of an output. This will enable the manufacturer to produce different shapes and designs to the material.

About the Author

Visit our Custom Manufacturing Marketplace (www.MFGmatch.net) to post and explore offerings for Bake Bending services, Cold Forging and other metal fabrication, product design and metalworking solutions.

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