EUROPEAN STEEL TECHNOLOGY AND APPLICATION DAYS 2017 - ESTAD 2017

Wire surfaces undergo many transformations on their way to the finished product. They are a very important key factor for the strength and quality of the wire. Fine steel wires have a small diameter such as 80 to 150 μm, however they have to resist high strength up to 3900 MPa during their application. During their production, any kind of surface damage has to be avoided. Another important issue, which has to be handled carefully during production of fine wires, is the scale. The aim of this work is to collect and describe the surface defects characteristics of rolled and drawn fine steel wire. The severity of the characterized flaws is described and rated. The development of the surface defects was observed over the producing process and the effects on the final product are visualised. Methods of finding suitable scale compositions for the fine wire production are declared and the characteristics of the scale are defined. To reenact the mechanical descaling on a lab scale, the wire samples were bended step by step by using a bending machine.