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| Tooling Specifications |
Dies shall be constructed of P-20 steel pre-hardened
to 28-30 Rc. Equivalent steels may be used only when approved by Martin
Pultrusion Group.
Die sections shall be stress relieved after rough
machining.
Steel shall be sized to provide a minimum of 1.250
inch from the edge of the cavity to the outer edge of the steel.
Entrance and exit ends shall have a .250"
radius.
Cavity surfaces shall be polished to a 10 micro-inch
finish or better.
Cavity and radiused ends of the die should be hard
chrome plated to .001" to .0015" thickness.
Parting lines shall be chrome plated around the
corners and sparked off.
All inserts shall be finish ground after assembly to
assure best match for even heating by platen or strip heaters.
All die surfaces to be parallel to within +/-.001"
along the length of the die.
Jack screws shall be provided to facilitate complete
disassembly of the die.
All insert retainer bolts shall be standard a length
3/8" - 16 thread.
All die assembly bolts shall be a standard 1/2" - 13
thread.
The use of non standard bolts must be approved by
Martin Pultrusion Group and one extra set of these bolts provided with the
finished die.
Minimum bolt thread engagement shall be one
half-inch (1/2").
Where practical, tap drill holes shall be drilled
through to facilitate clean-out of resin and debris.
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Die and cavity dimensions, dowel and bolt hole
patterns, mandrel lengths and tolerances shall be specified separately.
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| 615 Golden Oak Parkway Oakwood Village, OH 44146 USA ph:440.439.9130 fax:440.439.9131 |
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