EXPERIMENTAL ANALYSIS OF EFFECT OF SHEAR FORCE IN DIFFERENT GATE LOCATION OF POLYACETAL
Keywords:
Polyacetal, Simulation, Shear stress, Gate locationAbstract
Injection moulding process is very intellectual one due to its high precision and repeated production. The Quality products from the injection moulding process are complicated because of more process parameters to be controlled simultaneously. Gate is an important part of the mould where molten melt is entered through it. Small design changes in gate location will affect quality of products. So Computer aided design and simulation software are normally used before positioning gates in real mould. Also the shear force at gate area is important one for moulders to maintain quality. The shear stresses formed in the gate area are reating quality problems like weld line, sink mark and jetting. But calculating shear force in gates are difficult to predict during processing. This problem occur more in crystalline polymers like Polyacetal. So we have made a simulation analysis of shear force in different gate location to find out the lowest shear force arrived gate location by using analysis software moldex. We made this analysis for ‘O’ ring made by polyacetal.