zielsicher Englisch, Metalltechnik, Schulbuch

Read the text about forging, then draw lines from the forging tools in the picture to their English names and German translation. Forging is a manufacturing process to shape metal using compressive forces. The blows are delivered by a hammer. Advantages: saving material (because changing the shape does not produce any chips or off cuts), saving time (complicated shapes can be achieved relatively quickly), higher strength of the work piece (because the fibre orientation is not changed). Disadvantages: less accuracy, temperatures that are too high burn the material and make it unusable. There are two forging techniques: Free form forging: manual and individual, one of the oldest crafts; The artist-blacksmith has to shape the work piece freely on the anvil with a hammer, a forging furnace is needed nearby. Closed die forging: Moulding tools (upper and lower “forging dies”) are built into a forging press; used for serial production. German English Schmiedehammer Amboss Schmiedezange Lederschürze Lederhandschuhe forging hammer anvil forging tongs leather apron leather gloves Metal forming of fine sheet metal. Dividing (or cutting) is the mechanical cutting operation used on various materials without producing any chips. It is mainly applied to sheet metal. There are three groups of dividing. Label them with terms from the word bank. Then match them with the pictures. Draw lines. cutting with two approaching blades  knife edge cutting  shear cutting knife edge cutting shear cutting cutting with two approaching blades Mosaic Think about one of Vienna’s famous symbols, the,  Pummerin in St. Stephen’s Cathedral. Which technique was applied to achieve such an enormous shape as well as its sound?  Casting Think about a horse. That important “horse accessory” brings luck. What is it, and how is it made?  A forged horseshoe 11 A2 12 A2 Word bank 11 compressive Druck- blow hier: Schlag strength hier: Festigkeit fibre orientation Faserlauf accuracy Genaugkeit free-form forging Freiformschmieden closed die forging Gesenkschmieden 12 knife edge cutting Messerschneiden shear cutting Scherschneiden cutting with two approaching blades Beißschneiden 81 15 Non-cutting operations in detail Nur zu Prüfzwecken – Eigentum des Verlags öbv