Abstract
The paper presents the use of FEM (Finite Element Method) for calculus performing at the injection moulding of a high accuracy part made of plastic material type Polyacetal, referring at: pumping of the mould cavity, thermal resistance and mechanical strength. There are presented: diagrams of variation for the pumping full degree function of time at four temperatures of the mould, thermal representation of the part for the temperature of the mould at 80oC, the results obtained after the part’s testing at drop-test, the results of static stress for the part made of injected plastic material. Keywords: injection moulding, pumping, thermal resistance, mechanical strength