AN EFFECT OF IRON BASE METAL THICKNESS ON THE TIN LAYER FORMATION BY HOT DIP GALVANIZATION METHOD

• Main Author: FIRMAN ARIA NUGRAHA (NIM : 10508096); Pembimbing : Prof. Dr. Buchari
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/15701
• Institution: Institut Teknologi Bandung

Until nowdays, most of the construction used structural steel as a major building material. The steel has several disadvantages, one of them is the steel prone to corrosion. To protect the steel from corrosion used steel surface coating (hot dip galvanization method) with metal that resist to corrosion. The research was conducted to determine the effect of the steel base metal thickness on tin layer formation. The research was conducted using carbon steel with carbon content 0.3 %, with its differences thickness such as 0.4 mm, 0.7 mm, 0.9 mm. The differences of steel thickness affects on the formation of layers. On the steel of 0,4 mm, 0,7 mm, 0.9 mm have an average thickness of coating which is formed in a row of 0.09±0.04 mm; 0.14±0.06 mm; 0.25±0.19 mm. That result can be explained by vacancy diffusion processes that occur when dyeing. Corrotion rate measurements carried out by immersing the sample in corrosion medium (water) for 24 hours. The steel that is coated by tin has an average corrosion rate for the base metal thickness of 0.4 mm is 0.426 mmpy, 0.7 mm is 0.374 mmpy, and 0.9 mm is 0 mmpy.