PENGARUH KOMPOSISI AMONIUM CHLORIDE NUMBER (ACN) DAN SUHU TERHADAP KUALITAS BAJA HASIL PROSES FLUXING DI PT BONDI SYAD MULIA GRESIK

In the industry, corrosion is a problem caused by electrochemical reactions between metals and their environment. The metal most commonly used iron (Fe). One way to overcome using Hot Dip Galvanizing (HDG) method. Before HDG process carried out, it necessary pretreatment, one of which fluxing process. Fluxing pre-coating so that more durable against dipping in solution ZnCl2 NH4Cl. PT Bondi Syad Mulia not yet optimal, corrodes faster. factors influence changes quality are changing composition solution, temperature time. This research was conducted see effect ACN (Ammonium Chloride Number) immersion variables consisted constant variables, namely 1.5; 1.75; 2.00; 2.25; 2,50 at 50; 55; 60; 65; 70°C. variable time 10 minutes. as result flux analyzed colorimeter application including specifications form red color holding oxidation. has optimal results 2.00 with 60°C for minutes, can withstand 60