Production Process
Hot Dip Galvanizing: An Overview
Hot Dip Galvanizing is a process that involves applying a metallic zinc coating to chemically washed steel or iron by immersing it in a molten zinc bath at a temperature of around 450° Celcius.
Hot Dip Galvanizing adalah proses melapisi permukaan besi dan baja yang telah dibersihkan dengan cara mencelupkannya ke dalam cairan zinc yang dipanaskan pada suhu sekitar 450° Celcius.
Hot dip galvanizing has been in use for over 150 years, has established itself as the most effective solution to combat corrosion.
Research suggests that galvanized coatings corrode significantly slower than untreated steel, with estimates ranging from 18 to 80 times slower.
Proses hot dip galvanizing telah digunakan selama lebih dari 150 tahun dan terbukti sebagai solusi terbaik dan paling praktis untuk masalah karat.
Riset menunjukkan bahwa lapisan galvanis memiliki tingkat korosi sekitar 18 hingga 80 kali lebih lambat dibanding besi dan baja tanpa perlindungan galvanis.
01
Surface Preparation
This initial step involves thorough cleaning and pickling operations to eliminate any dirt, grease, rust, or scale present on the surface.
Meliputi pembersihan dan pencucian besi dan baja untuk menghilangkan kotoran, minyak, karat, cat, lemak, dan lainnya.
02
Prefluxing
Following surface preparation, this step focuses on dissolving any oxide that may have formed on the iron or steel surface after pickling. It also serves to prevent the formation of further rust.
Membersihkan sisa-sisa oksida yang mungkin terbentuk selama proses pembersihan.
03
Galvanizing
In this crucial stage, the cleaned and oxide-free iron or steel is immersed into a bath of molten zinc, ensuring complete coverage and adhesion of the protective coating.
Melibatkan pencelupan besi dan baja yang sudah bersih dan bebas oksida ke dalam cairan zinc di dalam bak.
04
Finishing
The final step encompasses various procedures including quenching, removal of excess zinc from the product, and meticulous inspection to guarantee the quality and uniformity of the galvanized finish.
Meliputi proses quenching, pembersihan kelebihan zinc dari permukaan, dan inspeksi quality control.
The durability of galvanized steel is directly proportional to the thickness of the coating. alternative methods such as electro-galvanizing and cold galvanizing, which result in thinner corrosion solutions, are not as resilient as hot-dip coatings.
Perlindungan besi dan baja galvanis bergantung pada ketebalan lapisan galvanis. Metode pelapisan lain seperti electroplating dan cold galvanizing tidak seefektif hot dip galvanizing karena ketebalan lapisannya yang lebih tipis.