Prezentace na téma: "Tutorial: Engineering technology Topic: Casting to temporary forms Prepared by: Ing. Elena Nová Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002."— Transkript prezentace:
Tutorial: Engineering technology Topic: Casting to temporary forms Prepared by: Ing. Elena Nová Projekt Anglicky v odborných předmětech, CZ.1.07/1.3.09/04.0002 je spolufinancován Evropským sociálním fondem a státním rozpočtem České republiky.
Procedure: Model is made in accordance to drawing Half of model is laid on modeling desk Suitable frame is superimposed and model is sand- rammed After ramming excessive sand is raked away by a ruler Frame is turned by 180 deg. and second half of model is superimposed Gating system, exhaust and second frame is rammed Frame is put together and weighted Cooled raw casting is removed Exhaust system and gating is removed
Procedure for machine forming is the same as with hand forming except ‘ramming and raw casting separation is done by machines. Machined forms and resulting casts are more accurate with smoother surface.
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