Plastics
In this laboratory there will be a few things tested, and experimentally concluded. There will be a determination of the process window for a specific material/mold/machine combination from data collected from flow simulation software. The material that was used was a Bayer USA ABS. Also, to determine the process window using, "mold-area" and "in-mold rheology" diagrams. In test one, the part that was tested using the flow simulation software was drawn in solidworks, and there was a brief overview of moldflow. Test two involved the solidworks part being imported into mold flow and 25 analyses run. The Molding Area Diagram showed that the machine being used would be able to mold all of the parts, achieving the proper temperatures and pressures. Inside the mold area diagram is the optimum processing conditions. All of the points on the graph were feasible on the machine that was being used. The second diagram was the -in-mold Rheology diagram which allows one to gauge where the viscosity was the most stable. With this graph, one is able to determine the optimum operating temperature, injection velocity, and melt viscosity.
Figure one has a dimensioned drawing of the part including the runner and sprue. There were two parameters adjusted, the melt temperature and the injection velocity. There were several parameters that were recorded after the flow simulation was completed. Using line drawings solidworks was able to render a 3-D part. SO, in-mold rheology gives you the optimum flow of the material, where as the mold area diagram gives you the temperatures and velocities that a good part can be produced. The inside box represents the parameters which will be optimum for making the parts. The shear rate of the material has a lot to do with the velocity at which it is injected, and also at the temperature. The area where the curve flattens out is where the melt is at its most stable. 0 was used to run melt flow tests, on the filling portion of the injection process. 28 MPaMaximum Shear Rate 12000 1/secAnalysis of Results For the first week of the experiment there was no data collected, only the part was drawn. Test two of the experiment involved the importing of the part to moldflow then the analyses were run. On this curve, it's where the line begins to flatten out.
Common topics in this essay:
Figure In-mold,
Figure Dimensioned,
Figure Mold,
Molding Diagram,
Analysis Results,
USA ABS,
Experimental Approach,
,
Melt Temperature,
Mold Temperature,
in-mold rheology,
mold diagram,
rheology diagram,
shear rate,
melt temperature,
in-mold rheology diagram,
maximum shear,
diagram flow,
flow simulation,
optimum processing,
mold temperature,
temperature injection velocity,
optimum shear rate,
bayer usa abs,
material bayer usa,
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Acceptance Essays
