Technical Brief - Running a Mixed Load with Differing Coating Thicknesses
Thickness
Using the Mickabooh Control & Tracking System, you can process multiple work orders each with a different coating
thickness requirement in the same run. To allow your operators to use this feature, the Allow load size changes options
must be set for each rectifier. Open the rectifier settings by
clicking Rectifier > Settings menu item. When the Rectifier
Settings window opens, make sure to select the Allow load
size changes option. This is a rectifier specific option and must
be set for each rectifier that load size changes will occur.
When load size changes are enabled, the operator will be able
to adjust the load size when a program is resumed from a
pause. Load size changing is allowed when one of the
following are true;
• The program is running under Curre
Current Density Control
OR
• The program is associated with a part
Allow load
size changes
Please see the Mickabooh Systems' Technical Brief - Creating a
Program or the Mickabooh Systems' Technical Brief - Creating a Part for details about creating programs and parts.
As mentioned above,, when changing the load size for a rectifier is enabled, the operator will have the opportunity to
adjust the process area in the bath when a program resumes from a paused condition. It doesn't matter what initiated
the pause condition (either by the operator
rator clicking the pause button, program pause, etc).
As an example of how to change the load size, assume you are running a mixed load with 3 work orders; each with a
varying amount of process area. Work order #1 has 10 square feet, work order #2 has 20 square feet and work order #3
has 30 square feet. The operator puts the entire load into the process tank, and runs a program to ramp to 18 ASF and
hold there for 60 minutes. After running
unning 30 minutes, the operator pauses
the process and removes all of the parts that constitute work order #2 (20
square feet). When the operator clicks the Resume button he will be
asked if the load size has changed. Clicking Yes will allow the operator to
adjust the load size in the process bath. If the load size has not changed,
chan
the operator should click No. Clicking Cancel will cancel the Resume
operation and the process will remain paused.
Process control doesn't give you good quality, it gives you consistent quality.
Quality comes
mes from consistently doing things right.
If the operator chooses to change the load size the Change Load Size window will appear with all of the work orders
listed. The operator
or can then either select the work order(s) to remove, or he can select the amount of process area that
has been removed. For our example, the operator remove
removed the material for work order #2, he would click work order
#2. The operator cannot remove a work order AND specify the area. He must either select a work order OR enter the
amount of area removed. If the operator clicks the cancel button, the
load size will not be changed and the process will remain paused.
If the operator selects area to remove and clicks OK, a confirmation box
will be shown and the user can either accept the change or not. If the
operator clicks No, the load size will not be changed and the process
will remain paused. If the operator clicks Yes, the process load size will
be changed and the rectifier's current output will be adjusted to
maintain the correct current density. The rectifier will then begin its
pre-process
process count down and the program will resume in the normal
fashion.
There is no limit to the number of times you can
adjust the process
ess load size during a process so
you can run as many work ordersa with different
coating requirement as you need.
Load size changes are also recorded on the process report and in the process data files. When the process report is
created, it will state when a load size change occurred and how much area was removed. The report will also state when
a particular work order was pulled from the process bath.
Process control doesn't give you good quality, it gives you consistent quality.
Quality comes
mes from consistently doing things right.