Model |
EQ-Die-05D -GP-4S
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| Dimensions |  
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| Weight | 1 Lbs
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| Material | Made of high purity ( >4N ) and high-density graphite (HIP)
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Whole set pressing die includes | - One sleeve dies with 55mm O.D and a tapered hole for two split sleeve inserts.
- Two split die inserts with 1/2"(12.7mm) I.D. for easy releasing of the sample
- Two polished pushing rods to ensure a perfect fit in the die
- Max. Working temperature
- 399ºC in air
- > 400 ºC need inert gas protection
- 2200oC Max. in high vacuum or high purity Ar gas
- Max. sustainable pressure is 50Mpa (~0.6 ton applied on the die)
- The die is specifically designed for our OTF-1200X-VHP4 to meet the high-temperature requirement
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Steps to make sample pellet
| - Mixing and grinding chemical powder by agate mortar
- Calcine mixed the powder in a high temp furnace under suitable temperature
- Grinding calcined powder again by mortar
- Placing the two die inserts in the center hole of the die
- Put calcined powder into the die inserts
- Pressing sample by a pressing machine under suitable pressure
- Take out pellet sample from the die by easily taking out and opening the split die inserts
- Sintering the pellet under suitable temperature (optional)
- Then, a new material sample is formed.
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| Instruction Video |  
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| Cautions | - Please must always wear protective goggles during operation !!!
- The pressing die cannot be used for pressing powder with a particle size < 30 microns. Small particles may slip
- into the gap between the 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 microns powder to the pressing die to avoid the
- damages.
- Please consider using the 3'' Dia. Sieve Set No.200&450 Mesh to separate the 32~75 microns particles from the
- powder clumps. Please clean the mold via ethanol after the completion of each experiment. ( Pic. 1)
- You may use BN coating as mould release (Pic 2)
 Pic 1  Pic 2
- Please use alcohol to clean the pressing die every time before use and store it in a dry place.
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| Application Note | - You may consider using EQ-BNMR for easy mold release. Please click the picture below to order.
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