METALLURGY
Metallurgy is the one basic discipline
required to evaluate the physical properties of
balls, both in process and as finished products.
From the tensile strength of the raw material, to
the crush strength of the finished ball, many
metallurgical tests must be performed. Each
material presents different problems to our
metallurgy department: The prior grain size in
some steel is very critical, alloy segregation is
an important factor in most copper base alloys,
the case depth and its hardness are important in
surface treated metals.
SPHERICITY
Measuring the roundness of a ball is no
problem using the Talyrond system. This system is
our fastest accurate method of measuring
roundness. The ball being inspected on the
Talyrond remains at rest on the table while the
test probe is rotated accurately around it. A
permanent polar chart recording is produced. The
overall accuracy of this machine is one millionth
of an inch. The calibration is verified by
standards traceable to the National Institute of
Standards and Technology (NIST).
INSPECTION
Our dimensional measuring lab is world
renowned. It is equipped with an outstanding
array of sophisticated optical, mechanical and
electro-mechanical measuring machines. In
addition to maintaining the quality of our own
products, our lab is for hire. We engage in
research and development, product evaluation, and
failure analysis that is related to dimensional
metrology.
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BALL SIZING
KITS
Ball sizing is the process of forcing an
oversize ball through the inside diameter of a
metal part. It will increase the diameter a
controlled amount and greatly improve the surface
texture.
We manufacture a complete line of fractional
inch ball sizing kits. The kits include rods to
push the ball through, and extreme pressure
lubricant to improve surface texture and extend
the useful life of the ball. Ask for
literature.
INSPECTION BALL
KITS
We manufacture metrology ball kits in
Fractional Inch, 1/32" through 1", Decimal Inch,
.100" through 1", and Metric Diameters, 1mm
through 24mm. These ball kits are used primarily
for inspection. By using two different diameter
balls, internal tapered diameters can be
measured. Balls are excellent for measuring
dove-tails and pitch diameter of threads or
gears. For tube bending, there is no better way
to check the finished product for minimum
diameter than with ball.
SURFACE FINISH
The surface texture or micro finish of a ball
is easily evaluated using the C.E.J. Multimi. This
instrument is a multibeam microinterferometer.
Vertical magnification of 500,000 times is just
ordinary for the Multimi, which has an ultimate
resolution of .02 millionths of an inch.
Photographic documentation may be provided in the
form of a microinterferogram. The calibration of
this instrument is based on a natural standard,
the green light band of mercury, 5461
Angstrom.
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