3D Systems ProX DMP 300 User Manual - page 61
57
3D SYSTEMS, INC
.
PN:80-D27 Rev.B
MACHINE PREPARATION
Loading the feeding piston
Operations described below complement and follow on from the Preparation Assistant "Step 3 : Loading powder" on page
WARNING: REACTIVE POWDERS
THE MANUFACTURING CHAMBER MUST BE INERT BEFORE POWDER MANIPULATION (O
2
LEVEL 1%
MAXIMUM) .
Before the first use of metal powder, ensure absence of humidity in the powder, which would affect its flow. That is why
sifting and oven drying are strongly recommended .
Implement the following operations :
•
Sieve the fresh powder once,
•
Place the fresh powder into a large tray in order to obtain a thin layer (maximum 4cm),
•
Place the tray in the oven at 70°C for 24 hours, in order to dry the powder out completely . As a good practice, shake
the powder delicately from time to time in order to speed up the process of moisture loss,
•
Sieve the powder again .
WARNING: REACTIVE POWDERS
DO NOT HEAT THE POWDER IN CASE THE OVEN IS NOT INERT . FLAMMABLE POWDERS ARE PROVIDED IN
SEALED INERT PACKAGING FREE OF HUMIDITY .
1 . Press the unlock door button . The door is still locked during the next 10 seconds .
After the 10 seconds, open the airlock door (1) .
2 . Pull the carriage and put the powder cans on a whole plate (2) (see "Plate
preparation and loading" on page 58 for details on how to prepare
the whole plate) . Make sure to put the cans fully inside the whole plate
surface .
3 . Push the carriage inside the airlock (3) and close the airlock door .
4 . Start the
Loading powder cans
cycle on the control panel (see "Step 3 : Loading
powder" on page 41) . The cans will be placed automatically on the sintering piston .
5 . Position the feeding piston .
6 . Press the unlock door button .
7 . Lower the lever, open the sliding door and then the gloves door (4) .
8 . Pour (5) and smooth (6) the powder in the feeding piston .
9 . Put the empty cans on the plate .
10 . Close the gloves door .
11 . Lock the door .
12 . Move down the tamping piston .
13 . Raise the feeding piston to tamp the powder .
14 . Move up the tamping piston .
15 . Start the
Unloading powder cans
cycle on the control panel (see "Step 3 : Loading
powder" on page 41) . The cans will be placed automatically on the airlock .
16 . To continue loading powder with other cans, then repeat from the step 1 .
1
10s
2
3
5
6
4