Martensitic wire with thin polymer coating
AssigneeNV Bekaert SA
InventorsLuc Stefaan Ledoux, Haiqiang Yang, Naqiao Qi
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Abstract
An elongated steel element (12) with a martensite, tempered martensite, bainite or sorbite structure has a polymer coating (16) with a thickness lower than 20 μm immediately upon the elongated steel element (14). The friction coefficient and corrosion resistance are both improved by the polymer coating at a lower cost.
Claims16
An elongated steel element with a martensite, tempered martensite, bainite or sorbite structure, said steel element having a polymer coating immediately upon said elongated steel element, said polymer coating having a thickness lower than 20 μm.
A method of manufacturing a coated elongated steel element, said method comprising the following steps:
- (a) austenitizing an elongated steel element;
- (b) rapid cooling said elongated steel element to have a martensite, bainite or sorbite structure;
- (c) immersing said elongated steel element in a bath with a polymer to provide a polymer coating of lower than 20 μm to said elongated steel element.
Dependencies are inferred from the claim text.