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Anglicky v odbornch pedmtech"Support of teaching technical subjects in EnglishTutorial: Engineering technology

Topic: Casting basic definitions

Prepared by: Ing. Elena Nov

Projekt Anglicky v odbornch pedmtech, CZ.1.07/1.3.09/04.0002je spolufinancovn Evropskm socilnm fondem a sttnm rozpotem esk republiky.

Casting basic definitions

Casting basic definitions

Netrval formyTrval formyNon permanent forms Permanent forms

Permanent forms

3Non-permanent forms Are made from silicon sand and binder. After solidification of casting are disposed.For manufacturing of non-permanent cast a mould is needed.

Casting basic definitions

Casting basic definitionsMould - is made according to drawing of desired castingMould is bigger than final cast, due to its shrinkage at cooling down. Longitudinal shrinkage of casts.Grey iron 1%Steel 2 %Alloys of Mg 1,2%

Moulds can be:PermanentInvestment / Lost waxPermanent can be used repeatedly.Lost (wax) is melted and replaced by metal.Permanent mold casting:

Casting basic definitions

Creation of hollows Casting basic definitions

Permanent Mold CastingCasting basic definitions

Casting method - Investment / Lost wax model:Casting basic definitions

Non-permanent mouldsAlloys Permanent moulds Loss wax MouldsCoreCore boxTechnical drawingCastingGrey ironSilicon sandSteel

Explain following expressions:

What is produced from silicon sand and binder? For manufacturing of non-permanent form we need mould. How is it made? Why is mould bigger than final product?What is longitudinal cast shrinkage.What mould types do you know?Explain expression Investment / Lost wax

Answer:

MODERN STROJRENSTV PRO KOLU A PRAXI, JOSEF DILLINGER A KOLEKTIVWWW. WIKIPEDIA. CZUsed literature