Betekenis van:
iron-grey

Voorbeeldzinnen

1. Comparison between ductile iron castings and grey iron castings
2. CPA 24.51.13: Casting services of grey cast iron
3. Grey iron castings for transmission shafts, crankshafts, camshafts and cranks
4. Concerning the chemical characteristics of castings, both grey and ductile cast iron are alloys of iron and carbon.
5. Grey iron castings for machinery and mechanical appliances excluding for piston engines
6. Grey iron castings for land vehicles excluding for locomotives or rolling stock, construction industry vehicles
7. Grey iron castings for land vehicles (excluding for locomotives or rolling stock, construction industry vehicles)
8. Both standards specify that cast iron materials have to meet the requirements of either EN 1561 or EN 1563 (i.e. grey or ductile cast iron).
9. Grey iron castings for bearing housings and plain shaft bearings (excluding bearing housings incorporating ball or roller bearings)
10. Thus, the argument that castings made of grey cast iron and castings made of ductile cast iron do not share the same basic characteristics is rejected.
11. For instance, in point 3.5, it is mentioned that ‘the product is made of non-malleable cast iron, which can be grey or ductile cast iron’.
12. As concerns the technical characteristics, the investigation demonstrated that ductile cast iron, in contrast to grey cast iron, has technical properties that allow the material to resist higher rupture stress and, more importantly, to be deformed to a significantly higher extent under compressive stress without fracture, i.e. ductile cast iron possesses plastic ductility whereas grey cast iron breaks under compressive stress, i.e. is brittle.
13. These experts’ opinions mainly highlighted the differences between ductile cast iron and grey cast iron in the graphite structure as well as the technical differences, i.e. the fact that ductile iron can be deformed under compressive stress whereas grey iron breaks under the same conditions.
14. It is noted that due to the magnesium added during the production process of ductile iron, the microstructure of the cast iron changes from a flake/lamellar form (grey cast iron) to a spheroidal structure.
15. In order to clarify whether the findings with regard to castings made of grey and ductile cast iron as set out in the definitive measures Regulation were indeed correct, it was examined whether ductile iron castings and grey iron castings were rightly considered to share the same physical, chemical and technical characteristics and end uses, as indicated in the definitive measures Regulation.