from high quality wire, each particle is cut to a length about equal
to its diameter. If required, the particles are conditioned (rounded)
to remove the sharp corners produced during the cutting process.
Strict Quality Control procedures are required to be able to manufacture
cut wire shot meeting all common industry specifications as well
as many individual customer specifications.
||As-cut particles are an effective abrasive due to the sharp edges created
in the cutting process. However, as-cut shot is not a desirable
shot peening media. The sharp edges, which are potentially damaging
to fatigue life, must be removed in a process called "conditioning".
Conditioned Cut Wire (CCW) shot is normally
manufactured in two degrees of conditioning - Normal Conditioning
which meets the shape requirements of SAE J441 specification, and
the more rounded Special Conditioning which meets the requirements
of Aerospace specifications such as AMS 2431.
Special ConditioningAMS 2431
Depending on application, various hardness
ranges are available with cut wire media. Generally, the higher the
hardness of the media, the lower the durability. However for shot
peening applications, the shot used should be at least as hard as
Almen strips or the part being peened, whichever is harder. Common
Hardness Ranges in Carbon Steel Cut Wire Shot are: Blasting Applications
- HRC 45-50; Shot Peening high strength parts such as carburized gears
and springs HRC 55-60; and Shot Peening softer parts - HRC 50-55.
Versatility - One
of the most important aspects of cut wire shot is its versatility.
Cut Wire Shot can be made from many materials: Stainless Steels
(Type 302, Type 304, Type 430 and others), 1070 Carbon steel of
various hardness levels, Aluminum, Zinc and Nickel alloys. Size
of media is not limited to the standards. Conditioning is offered
in Standard degrees: As-cut, Normal and Special. Other degrees of
Conditioning are, and can be supplied as well. Hardness ranges other
than those discussed above can also be supplied.
Source: Premier Shot Company,