ZINC BASED CORROSION PROTECTION COATING FOR STEEL SHEETS FOR MANUFACTURING AN ARTICLE AT ELEVATED TEMPERATURE BY PRESS HARDENING

摘要

A zinc-based anti-corrosion coating is disclosed for steel sheets or steel strips, which for the purpose of hardening are at least in parts heated to a temperature above Ac3 and then cooled at a temperature situated at least partially above the critical cooling speed, the anti-corrosion coating being a coating applied by hot dipping. In addition to at least 75% by weight zinc and possible unavoidable impurities, the coating also contains 0.5 to 15.0% by weight manganese and 0.1 to 10.0% by weight aluminium