Many people as well as companies are choosing metal bellows
as their preferred choice. The benefits of metal bellows are the fact that they
can be compressed when pressure is exerted on them and then they are able to
readily return to their normal size when the pressure has been taken off of
them. Metal bellows expand easily as well as mold to the environment due to
their flexibility and ease with air flow. Metal bellows are an extreme
advancement from their previous counterparts being leather bellows which did
not expand as readily.
If you are looking for metal bellows, they come in two
different types including formed and welded. Metal bellows which are welded
come when different bellows are welded together. Welded bellows are also called
edge welded bellows or diaphragm bellows. The other type, formed bellows, use
different processes to create them such as cold forming, electroforming and
hydro forming. Formed bellows are made by reworking tubes as in deep drawing.
The benefit with welded bellows is the fact that they can be made with a low
price point in mind and have a higher sustainability than formed bellows.
Although welded bellows are often preferred, they do have a few drawbacks a
well. Welded bellows have a tendency to have a reduced metal strength at the
weld joints and this is due to extremely high temperatures of the welding
process. Welded bellows are made using a variety of different metals and
alloys. Formed bellows differ in the fact that they are made using only alloy
that offer very good elongation such as brass. The problem with welded bellows
is that they are not made using elongation materials such as brass because
materials such as brass are not good for welding purposes and therefore cannot
be used in welded bellows. Overall, the choice is up to the individual and the
job at hand in determining which metal bellow works for them.
