20 mm (0.78") I.D. Dry Pellet Pressing Die - Die-20D

Die-20D is a Complete pressing die with 0.78 " I.D. is ready for you to make 20 mm diameter sample pellet.

SPECIFICATIONS:

Modle	Die-20D
Die Sleeve Height	2" (50 mm)
Diameter	Sleeve ID. Ø 20mm, Sleeve OD. Ø 51mm
Whole set pressing die includes	One 20 mm I.D. core die made of hardened steel and highly polished with hardness HRC 60 - 62 Ra 0.08μm highly polished steel One steel sleeve for core die protection Two pushing rods (12 mm long and 70 mm long) highly polished and perfectly fitted into die. Two steel support plates One steel cylinder for releasing out the sample. Max. Load: 30 metric Ton (at room temperature), or 940 MPa equivalent
Pressing die installation schematic
Cautions	Please must always wear protection goggles during operation !!! The pressing die cannot be used for pressing powder with particle size < 30 mircon. Small particles may slip into the gap between pushing rod and steel sleeve and cause damages to the sleeve during the compression. Ball mill and sieve the powder and apply only the 32~75 mircrons powder to the pressing die to avoid the damages. Please consider using the 3'' Dia. Sieve Set No.200&450 Mesh to seperate the 32~75 microns particles from the powder clumps. Please clean the mould via ethanol after the completion of each experiment.             Please use alcohol to clean the pressing die every time before use and store it in a dry place with antirust oil after operation to avoid rusting on the surface, because all pressing dies are made by high-stretched carbon steel for achieving high hardness to meet essential requirements of making ceramic or metal samples. Otherwise, the pressing surface could probably get scratched. To avoid damaging the die core and sleeve, we strongly recommend you use the professional laboratory hydraulic pressers which ensure the most even pressing interface and uniform pressure force. For pressing sticky metal powders such as Al, Mg, Zn, it is necessary to use dry or alcohol-based tool lubricant to lubricate the die and sleeve set to reduce friction during the compression.  Do not press flammable, explosive materials.
Application Notes	You may consider using BNMR for easy mold release. Please click the picture below to order.
Steps to make sample pellet	Mixing and grinding chemical powder by agate mortar or Ball Mill Calcine mixed the powder in a high temp furnace under suitable temperature Crushing and Grinding calcined powder again by mortar or ball mill Put calcined powder into the die Pressing sample by a pressing machine under suitable pressure Take out pellet sample from die ( You may use CIP to press again to increase density about 5 - 10%.) Sintering the pellet under suitable temperature Then, a new material sample is formed!

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