초록 ▼

A member used in contact with a hot dip galvanizing bath, such as a sinker roll, a support roll or a bearing, is produced by nitriding stainless steel to form a nitride layer and a nitrogen-diffused layer on the surface thereof. The member used in contact with a hot dip galvanizing bath is formed on

A member used in contact with a hot dip galvanizing bath, such as a sinker roll, a support roll or a bearing, is produced by nitriding stainless steel to form a nitride layer and a nitrogen-diffused layer on the surface thereof. The member used in contact with a hot dip galvanizing bath is formed on its surface with the nitride layer by nitriding it in a salt bath containing a cyanide, a cyanate, a carbonate and the like or by heat-treating it in an atmosphere containing ammonium or nitrogen.

대표청구항 ▼

[ What is claimed is:] [1.]1. A hot dip galvanizing bath apparatus having a component comprising a sinker roll, a support roll or bearing and wherein said component having a nitrided layer and a nitrogen diffused layer on the surface obtained by nitriding it in a salt bath containing a cyanide, a cy

[ What is claimed is:] [1.]1. A hot dip galvanizing bath apparatus having a component comprising a sinker roll, a support roll or bearing and wherein said component having a nitrided layer and a nitrogen diffused layer on the surface obtained by nitriding it in a salt bath containing a cyanide, a cyanate and a carbonate and/or by heat-treating it in an atmosphere containing ammonia and/or nitrogen.