apex seals shotpeened? what does that mean and how to do it?
#2
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Shot peening is used to relieve surface tension in parts. I don't see how you could use shotpeening on an apex seal without basically destroying it. Cryotreating would be a better option. There is another way to relieve the surface tension but I don't remember what it is.
#4
Originally Posted by RETed
Hmmm...I always thought shotpeening is shooting a special media to compress the surface?
-Ted
-Ted
thats what i thought...by shotpeening u encourage strain hardening......which gives u stronger finished product....downside is.....shotpeening has a chance of warping the part and the part is not as ductile as before....i think u meant to say annealing...which is heating the part until it reaches softening temperature
#5
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Shotpeening INDUCES residual surface stresses by shooting a media (shot) at the part causing localised compressive platic deformations in the surface. It would be bad on apex seals, because, well you want them to seal, and shot peening will put little bumps all over them which will stop them from sealing as effectively.
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Definition from: http://www.ndt-ed.org/GeneralResourc...y/letter/s.htm
Shot Peening - A carefully controlled process of blasting a large number of hardened spherical or nearly spherical particles (shot) against the softer surface of a part. Each impingement of a shot makes a small indentation in the surface of the part, thereby inducing compressive residual stresses, which are usually intended to resist fatigue fracture or stress-corrosion cracking.
more info here:
http://www.metalimprovement.com/shot_peening.php
Shot Peening - A carefully controlled process of blasting a large number of hardened spherical or nearly spherical particles (shot) against the softer surface of a part. Each impingement of a shot makes a small indentation in the surface of the part, thereby inducing compressive residual stresses, which are usually intended to resist fatigue fracture or stress-corrosion cracking.
more info here:
http://www.metalimprovement.com/shot_peening.php
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Originally Posted by RoughRex
which are usually intended to resist fatigue fracture or stress-corrosion cracking.
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