APEX™ QUICK RELEASE DIE
2
QS-26300-6
With the top pressing anvil and base locator plate fitted to the Press, the APEX Die is ready to use.
Tips for First Time Use
1)
Latch set-up
Gently push the die body down to its first latch position.
The top of the body should then be level with the tabs
(see Figure 5).
Caution
: do not allow the tabs to protrude above the
level of the die body.
2) Sample guidelines
The optimum pressing regime depends strongly on the
properties of the sample, in particular:
•
Density
•
Compressibility
•
Strength of binding
The effects of these properties may be mitigated with additives or use of aluminium support cups.
Trials are required to determine the optimum sample mass. Begin with the recommended
amounts, adjusting the sample quantity between runs to achieve the desired pellet thickness.
Example pressing of Portland Cement in aluminium support cups:
Push the support cup into the die body so that it rests on the bottom of the cavity and then fill with:
•
9-12 g of sample for 32 mm dies
•
12-15 g of sample for 40 mm dies
Example free pressing of Portland Cement:
Fill the die directly with the following trial amounts of sample:
•
5-6 g of sample for 32 mm dies
•
6-8 g of sample for 40 mm dies
N.B
—
In both cases, the cement powder is pre-mixed and homogenised with a starch-
based binding additive in a cement-binder ratio of 4:1. The masses given above are of the
homogenised mixture.
Whatever the fill weight of sample used, the following maximum final pellet thicknesses must be
observed:
The maximum final pellet thickness is:
7.5 mm if using the polished plate;
9.5 mm without the polished plate.
Pelletising Accessories
Part
32 mm Al support cups
CX0505E
40 mm Al support cups
CX0545E
Binding additive (¼ g tablets) CX0625E
Level
Figure 5 Die set at the first latch position
