How to Design Extrusion and Injection Molding Equipment with
Computer Programs
2 DAY LECTURE/WORKSHOP
OFFERED ONCE:
August 14-15, 2008 (CRS# 00.749-021)
TUITION: $1045
OVERVIEW
Polymer processing machinery can be designed on the basis of empirical data gathered from experience and then optimized by means of experiments. This kind of trial and error method, however, can involve huge costs. Furthermore it can also be difficult to determine the combinations of variables that influence the efficiency of the machine by this method alone. This seminar shows how by applying computer programs to modern design problems, experimentation can be minimized and in some cases, even avoided. The seminar begins with the analysis and storage of rheological and thermal properties of a polymer in a resin data bank by means of a computer program. Examples will be shown as to how this data can be applied to design extrusion screws, dies and injection molds best suited to process a given resin reliably with the help of computer programs. Methods of assessing the available machinery as
to their ability to process a given resin
optimally will also be discussed. A special feature of this seminar is that
every participant will have the opportunity to calculate practical examples with
the software presented under the guidance of the instructor. The seminar is
intended for practicing engineers, polymer scientists and technicians. Lab
personnel dealing with measurement and acquisition of polymer data will get to
know new methods of data storage. Seminar material includes a hand-out on the
software and a free copy of Design Formulas for Plastics Engineers by Natti S.
Rao.
CONTENT
Polymer Properties
Pressure Drop Calculations in the Runners of an Injection Mold
INSTRUCTOR
Dr. Natti S. Rao
2 DAY LECTURE/WORKSHOP
OFFERED ONCE:
August 14-15, 2008 (CRS# 00.749-021)
TUITION: $1045
OVERVIEW
Polymer processing machinery can be designed on the basis of empirical data gathered from experience and then optimized by means of experiments. This kind of trial and error method, however, can involve huge costs. Furthermore it can also be difficult to determine the combinations of variables that influence the efficiency of the machine by this method alone. This seminar shows how by applying computer programs to modern design problems, experimentation can be minimized and in some cases, even avoided. The seminar begins with the analysis and storage of rheological and thermal properties of a polymer in a resin data bank by means of a computer program. Examples will be shown as to how this data can be applied to design extrusion screws, dies and injection molds best suited to process a given resin reliably with the help of computer programs. Methods of assessing the available machinery as
to their ability to process a given resin
optimally will also be discussed. A special feature of this seminar is that
every participant will have the opportunity to calculate practical examples with
the software presented under the guidance of the instructor. The seminar is
intended for practicing engineers, polymer scientists and technicians. Lab
personnel dealing with measurement and acquisition of polymer data will get to
know new methods of data storage. Seminar material includes a hand-out on the
software and a free copy of Design Formulas for Plastics Engineers by Natti S.
Rao.CONTENT
Polymer Properties
- Storage of thermodynamical data for the solid and molten state of a polymer in a resin data bank
- Analysis of shear viscosity as a function of shear rate and temperature with four rheological models and storage of the resulting viscosity constants in a data bank with a computer program
- Computer simulation of extruder output as a function of resin viscosity, screw speed, melt temperature and screw geometry
- Parametrical study of the variables: resin properties, barrel temperature, screw speed extruder output and screw geometry in relation to solids melting and melt temperature with a computer program
- Studying the effect of throughput, resin viscosity, melt temperature and die dimensions to achieve a uniform melt flow distribution in a Coat-Hanger Die with a computer program
- Finding the spiral gap for a uniform distribution of the melt flow in spiral dies
- Injection molds
Pressure Drop Calculations in the Runners of an Injection Mold
INSTRUCTOR
Dr. Natti S. Rao
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Continuing Studies, Corporate & Distance Education
Continuing Studies, Corporate & Distance Education