Pellet Die set for making 40 mm (~1 9/16 inch) pellets from powders.
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Die Set includes: Die sleeve, plunger rod, 2 x spacers, release ring and base plate.
40 mm (~2 inch) pellet die sets are commonly used for pellet preparation for XRF which require larger surface area compared to other techniques and for thin film research for making sputtering targets and pulsed laser deposition targets. These wider diameter dies can take large loads through them - 40 tons which is beyond the limit of most lab presses. You do not need to get to such high forces though for great pellets.
Die made of hardened tool steel (Rockwell hardness >C60) for long lasting trouble free performance. Sleeve is polished to high tolerances to allow the hardened tool steel plunger to slide through perfectly. Plunger and spacers are made from high yield strength steel, machined and polished to high tolerance for the perfect fit. Interior surfaces ground to mirror-like finish.
For an animation of die assembly, powder pressing and release click here.
|Yield Strength Hardened Steel||80,000 psi (550 MPa)|
|Recommended max loading @ 50 %||40,000 psi (275 MPa)|
|Recommended max force||78,000 lb (39 ton, 345 kN)|
|Typical force for quality pellets||10000-29000 lb (5-15 ton, 43-130 kN)|
|Die sleeve inner diameter||40 mm (1.97 inch)|
|Die sleeve height||50 mm (1.97 inch)|
|Die sleeve outer diameter||70 mm (2.76 mm)|
|Assembled height with spacers (w/o powder)*||104 mm (4.09 inch)|
|Assembled height no spacers (w/o powder)*||84 mm (3.31 inch)|
*If making thicker pellets, the die set can operate just the same without spacers