Injection Molding
5 DAY LECTURE/WORKSHOP
OFFERED FIVE TIMES:
January 7-11, 2008 (CRS# 00.716-001)
March 17-21, 2008 (CRS# 00.716-002)
June 9-13, 2008 (CRS# 00.716-012)
July 14-18, 2008 (CRS# 00.716-021)
August 4-8, 2008 (CRS# 00.716-022)
TUITION: $1495
OVERVIEW
This seminar provides comprehensive information about the injection molding process, and covers both the underlying engineering principles as well as their application in the molding environment. Classroom lectures cover the basics of the injection molding process and provide practical analyses that yield results and can be applied in the molding shop.
Injection molding workshops supplement the class material to provide experience with actual machine operation and practical molding techniques. Machine start-up, operation and shutdown procedures are demonstrated. Molding trials that show the relationships between processing variables and part quality are conducted.
Workshop emphasis is on practical setup procedures that optimize molding cycle and product requirements. Troubleshooting techniques and solutions to practical molding problems are also addressed.
CONTENT
Overview of the Injection Molding Process
Attendees will use both electric and hydraulic molding machines, and non-instrumented and instrumented molds.
ENROLLMENT LIMIT
Course enrollment is limited to 12 students.
INSTRUCTORS Stephen Petrie and Andy Routsis
5 DAY LECTURE/WORKSHOP
OFFERED FIVE TIMES:
January 7-11, 2008 (CRS# 00.716-001)
March 17-21, 2008 (CRS# 00.716-002)
June 9-13, 2008 (CRS# 00.716-012)
July 14-18, 2008 (CRS# 00.716-021)
August 4-8, 2008 (CRS# 00.716-022)
TUITION: $1495
OVERVIEW
This seminar provides comprehensive information about the injection molding process, and covers both the underlying engineering principles as well as their application in the molding environment. Classroom lectures cover the basics of the injection molding process and provide practical analyses that yield results and can be applied in the molding shop.
Injection molding workshops supplement the class material to provide experience with actual machine operation and practical molding techniques. Machine start-up, operation and shutdown procedures are demonstrated. Molding trials that show the relationships between processing variables and part quality are conducted.
Workshop emphasis is on practical setup procedures that optimize molding cycle and product requirements. Troubleshooting techniques and solutions to practical molding problems are also addressed.
CONTENT
Overview of the Injection Molding Process
- Molding behavior of thermoplastics; molding functions - plastication & injection, forming & solidification; machine & mold operations, machine sequence; process sequence & variables - plastication, injection, packing & holding, cooling
- Molecular structure - polymer types, amorphous vs. crystalline; thermal characteristics - transitions & energy requirements; flow characteristics - non-Newtonian effects
- Processing mechanisms - feeding, melting & mixing; screw problems & solutions; special screw options: mixing, multi-stage
- Isothermal cavity filling - filling modes - filling problems; thermal effects - flow length, orientation, stresses; runner & gate flows, flow balancing; pressure requirements - pressure traces; packing/holding & cooling-heat transfer effects; pvT applications
- Mold types & configurations: 2-plate, 3-plate, stack, etc.; ejection systems; cooling systems; thermal systems/hot runners
- Injection units - variants & options; clamp systems - toggle, hydraulic, hydromechanical; hydraulic/electrical systems, energy saving features; specialized machines: multicomponent, coinjection, gas-assist, etc.
- Scientific and decoupled molding concepts; troubleshooting; cycle time minimization and yield
- Machine and mold sensors; proportional & servo valves; closed-loop control; velocity and temperature profiling; statistical process monitoring
Attendees will use both electric and hydraulic molding machines, and non-instrumented and instrumented molds.
ENROLLMENT LIMIT
Course enrollment is limited to 12 students.
INSTRUCTORS Stephen Petrie and Andy Routsis
© 1995-2007 University of Massachusetts Lowell,
Continuing Studies, Corporate & Distance Education
Continuing Studies, Corporate & Distance Education