Control of coating of members

摘要

An in-line process is disclosed for galvanising an elongate member with a coating that comprises zinc and aluminium. The aluminium is in a range of 5-20 wt%. The process comprises cleaning and applying a flux that is free from alkali metal to an external surface of the member. The process also comprises drying the flux on the member and pre-heating the member. The process further comprises passing the pre-heated member through a bath comprising the coating of zinc and aluminium and then removing the coated member.