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SPI Classifications
- Type 101 Mold: This tool is capable of one million
cycles or more. Mold base is a minimum 280 BHN (Rc 30). Molding
surfaces (cavities and cores) must be hardened to a minimum
of Rc 50 and, where possible, have a hardened wear plating.
All other details, such as slides, heel blocks, gibs, wedge
blocks, etc, should also be of hardened tool steels with wear
plating. Part ejection should be made utilizing a guided plate
with replaceable hardened posts and bushings. All slides used
in side coring should have replaceable hardened wear plates.
Electroless nickel plating of all water channels is recommened
to inhibit rust. Parting line locks are required.
- Type 102 Mold: This tool is not capable of exceeding
one million cycles. This mold is identical to the Type 101 with
the following items not required: guided ejection, hardened
slide wear plates, plated water channels, and wear plated cavities.
All other extras are optional. This tool is a medium to high
production tool that is good for abrasive materials and/or close
tolerance products.
- Type 103 Mold: This tool is capable of under 500,000
cycles. Mold base is to be a minimum of 165 BHN (Rc 15-17).
Cavities and cores to be a minimum of 280 BHN (Rc 30). All other
extras are optional. This is a medium production tool at an
economical price range
- Type 104 Mold: This tool is capable of under
100,000 cycles. Mold base is of mild steel or aluminum. Cavities can
be of aluminum or mild steel or any other agreed upon material. All
other extras are optional. This mold is a low production mold and
is used as a limited production tool on non-abrasive materials.
- Type 105 Mold: This tool is capable of no
more than 500 cycles. The mold base may be constructed from cast metal
or epoxy or any other material offering sufficient strength to produce
the minimum prototype pieces. This tool is only for prototype purposes
only. All other extras are optional.
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