zielsicher Englisch, Metalltechnik, Schulbuch

Work with a partner. Use the internet or your book about technology and materials to collect the missing data in the tables. Choose one of the steels mentioned below. Develop a presentation pointing out the five required items. Work in groups and present your results to the class. Material number: 1.0501 1.2842 1.5752 1.2312 Steel grade: tempering steel cold worked steel case hardening steel tempered tool steel German translation Vergütungsstahl Kaltarbeitsstahl Einsatzstahl gehärteter Werkzeug- stahl Required items: 1. Chemical composition 2. Possible heat treatment methods 3. Fields of application (purpose of use) – give examples 4. Range of hardening temperatures 5. Range of annealing temperatures 06 A2–B1 Annealing colours for carbon tool steel Annealing Temperature in °C white-yellow 2 straw yellow 630 gold yellow 680 yellowish brown 740 murrey 780 red 810 crimson 850 violet 900 dark blue 950 cornflower 1000 light blue 1100 blue-grey 1200 grey >1300 Heating colours Heating Temperature in °C dark brown 550 murrey 630 dark-red 680 dark cherry-red 740 cherry-red 780 light cherry-red 810 light red 850 good light red 900 orange 950 light orange 1000 yellow 1100 light yellow 1200 yellow-white >1300 07 A2–B1 102 Unit 19 Interaction Nur zu Prüfzwecken – Eigentum des Verlags öbv