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What Are The Metal Stamping Parts?
Adaugat pe 25/04/2019 05:23:32 de otsedtalex

The choice of metal stamping materials used depends on the
desired attributes of the finished piece. Stamping is not limited as a
fabrication process to just metals - there are numerous materials that can be
processed through stamping techniques, such as paper, leather, or rubber, But
metals are by far the most commonly used.
In general, metals tend to maintain
their malleability and ductility after stamping. Some used in precision stamping
usually range from soft to medium hardness and carry a low coefficient of flow.
Some of the customary metals and metal types fabricated through stamping
include:
    Precious metals, such as silver, gold, and platinum
   
Ferrous metals, especially iron-based alloys like stainless steel
   
Non-ferrous metals, such as bronze, brass, and zinc
    Non-standard alloys,
such as beryllium nickel and beryllium copper
Ferrous metals are commonly
used in stamping operations, as their low carbon content means they are among
the least private options available resulting in low unit production
costs.
Several important factors and design considerations need to be
addressed when performing Metal Stamping
Parts
 operations.
Finishing Operations
Post-stamping production
operations can include the stamped product going through deburring, tapping,
reaming, and counterboring processes. These allow for the addition of other
parts to be added to a stamped piece or for the correction of imperfections in
finish or removal of sharp Between that may impact safety.
Deburring
involving the removal of shards of cut material that remain on the workpiece
after the stamping operation has been completed. Sharp edges may require
grinding to remove burrs or may need to be flanged over to produce a smoothed
edge and to direct the burred edge to the Inside fold where it will not cause
injuries or be noticed cosmetically.
Design Concepts
Overly narrow
projections should generally be avoided in stamped products, as these may be
more easily distorted and impact the perception of quality in the finished
product.
Where possible, designs should be based on the use of existing dies
for standard shapes and bends. The need to create a custom die for stamping will
increase initial tooling costs.
Avoidance of sharp internal and external
corners in stamped product designs can help reduce the potential for the
development of larger burrs in these areas and sharp edges that require
secondary treatment to remove. Also, a great potential for stress concentrations
exists in sharp corners, which may Cause cracking or subsequent failure of the
part through extended use.
The overall dimensions for the finished product
are going to be limited by the available dimensions of the sheet metal sheets or
blanks, and these limits need to be factored for the material consumed in folds
on edges and flanges and any additional material removal or use. Products may
need to be created in multiple steps and mechanically joined together as a
second step in the production process.
For punching operations, consider both
the direction of punching as well as the size of the punched feature. Generally,
it is best to do punching in one direction, so that any sharp edges produced by
the punch will all be on the same side of the The edges can then be hidden for
appearance purposes and kept away from general access by workers or product
end-users where they might represent a hazard. Punched features should reflect
the thickness of the raw material. A general rule is that punched features
should Be at least twice the material thickness in size.
For bends, the
minimum bend radius in sheet metal is roughly the same as the material
thickness. Smaller bends are more difficult to achieve and may result in points
of stress concentration in the finished part that may subsequently cause issues
with product quality.
When drilling or punching holes, performing these
operations in the same step will help to assure their positioning, tolerance,
and repeatability. As general guidelines, hole diameters should be no smaller
than the material thickness, and the minimum spacing of holes should be at least
Twice the material thickness apart from each other.
Bending operations should
be performed with awareness of the risk or distorting the material, as the
material on the interior and exterior surfaces of the bend point are compressed
and stretched respectively. The minimum bend radius should be approximately
equal to the thickness of the workpiece, again To avoid stress concentration
build up. Flange lengths should be more like three times the workpiece thickness
as a good practice.

Tag-uri: Metal Stamping Parts





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