The fracture surfaces of the SPCs samples made at injection temperature
from 200 to 240[degrees]C after peel testing are shown in Fig.
That temperature is increased somewhat in the plunger, and increased further to final injection temperature
in the hot-runner nozzle.
and pressure during extrusion.
After a number of trials injection temperature
, injection pressure, and clamp pressure and injection time were optimized for different powder loadings.
Recommendation: Using instrumented wax injection trials with a step block mold, recent research evaluated the restraint of geometrical features by the metal die and process parameters such as dwell time, platen temperature, injection pressure and injection temperature
Temperature conditions were set similar to the MMA method: the injection temperature
was 275 [degrees]C and the oven temperature was programmed at 15 [degrees]C/min from 325 [degrees]C.
Measurements taken on instrumented molds have shown that a polymer may remain at its injection temperature
for approximately one-half second before it begins to cool dramatically.
The metal injection temperature
is set to achieve a 30% to 50% volume fraction of primary solids.
The influences of skin/ core volume ratio, injection temperature
, and core injection delay time on penetration length and width are analyzed in detail.
The wax patterns were made using 864 Red Wax with the injection temperature
Design advantages are said to include a pre-assembled screw and head zone direction injection temperature
control units, a compact unified base, and simplified cooling and wiring systems, including redesigned double-pass heaters for ease of piping and wiring.
To perform the analysis the injection temperature
, mold temperature, ejection temperature, material, and thickness must be chosen.