Use of a Zn-Ni alloy for preparation of Zn-Ni alloy hot-dip galvanizing bath

摘要

A Zn-Ni alloy having a high Ni content is used for supplying Ni and Zn into a hot dip galvanizing bath. This alloy is characterized by being produced by using a flux consisting of a fused-salt former, which forms a salt having a melting temperature of 700C or less, and Na2B4O7 and occasionally additionally Na2CO3. By using such an alloy, the bath can be quickly prepared, and Zn and Ni can be supplied to the bath without leaving the undissolved residue.