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Making Of ERW Tube by james harris





Making Of ERW Tube by
Article Posted: 06/15/2013
Article Views: 365
Articles Written: 6
Word Count: 400
Article Votes: 0
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Making Of ERW Tube


 
Manufacturing
Steel tube come as a flat steel strip that has been further slit to the actual width for the end tube size. For converting it into round tube it has been passed thorough series of rolls. Further it has been passed through a weld box. For ERW tube the weld box uses electrical resistance of the steel to create heat. The specific heat welds the two edges of the steel together. Adopting this way will produce a solid weld that is more solid and stronger than the original steel.

As soon as the process completes the welding surface left behind which is known as flash is removed if there is a need to do so. After the flash process, the next step is the traveling of the tube through a cooling box which is full of special coolant. Once the traveling process completes the tube then passes through different finishing rolls. These rolls are used to make the final dimensions and to change the shape of the tube. Some common shapes are round, rectangle, oval, square and octagon. After the finishing process the tube is then coated with some anti-rust liquid for the protection of steel tube.

At the end the tube passes through a cutoff that cuts the tube into the lengths required. The tube mostly moves via mills at a very high speed. The time consumed in the process of entering into the mills and through the cutoff is few minutes.

There are a number of secondary processes that are to be performed after the tube is being manufactured. Some of the common items are;

Dedimpling

Dedimpling process can be done at the same time when cutting process is in progress and it can be used as a secondary process also. The dedimple process is carried on with the help of a machine that removes the dent from the tube by inserting plugs.

Deburring

Deburring is the process where a tube passes through a machine with spinning wire brushes. These brushes make the end of the tube smooth and remove the toothed edges left after cutting the tube. This is done when the tube will be exposed at the end of the product.

Coating

The coating is a process where the tube is being coated with a metallic like zinc, or chrome for a shiny finish. The tube can also be coated with powder or paint.

Related Articles - erw tube, steel tube bending,

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