This unit operation simulates the removal of extra material from a molded object. It also can be used as a generic operation that reduces the mass of a discrete entity. The user specifies the amount of bulk material removed from each part and the program calculates the flowrate of the bulk output stream and the new bulk amount (mass/unit) of the treated entity.
If the equipment size option is in Design Mode and the operating throughput exceeds the maximum throughput, then, the program assumes multiple, identical units operating in parallel with an operating throughput of less than the maximum. If the equipment size option is in Rating Mode and the operating throughput exceeds the rated throughput of the step (which is equal to the rated throughput of each unit times the number of units), a warning message is displayed advising the user to increase the number of units or reduce the operating throughput.
To account for electricity consumption, the user can either specify the power demand (in kW) or the specific power requirement (in kW/parts-min). In the second case, the specific power requirement times the operating throughput yields the power consumption.
The interface of this operation has the following tabs:
● Oper. Cond’s, see Trimming: Oper. Conds Tab
● Utilities, see Discrete Throughput Operations: Utilities Tab
● Labor, etc, see Operations Dialog: Labor etc. Tab
● Description, see Operations Dialog: Description Tab
● Batch Sheet, see Operations Dialog: Batch Sheet Tab
● Scheduling, see Operations Dialog: Scheduling Tab