Studi Eksperimental Pertambahan Berat Las Blok 7 Lambung Kapal Ferry Ro-Ro 1500 GT

Abstract

Before World War II, steel ship construction used rivet construction. However, along with the development of technology, welding methods were created and are a technique for joining steel construction with results that are tighter, simpler and cost-effective for assembly. Welding is the process of joining materials by heating them to welding temperature, with or without standard pressure, and with or without the use of filler metal. The weight of the weld metal can affect the light weight tonnage (LWT) and weight or weight group of the ship and the cost of the ship. How much weld metal increases the weight of the steel structure in block 7 of the 1500 GT Ro-Ro Ferry Ship using the SMAW (Shielded Metal Arc Welding) welding process is the aim of this research. The approach was carried out experimentally, by making several specimens based on the welded construction design and welding specification procedures (WPS) for the 1500 GT Ro-Ro Ferry Ship. The increase in weld weight on an experimental basis was 2.13%, or in other words, from a total welding length of 2,395.56 meters, we obtained an increase in weld metal weight of 1,059.95 kg from the total weight of the block 7 hull structure of the 1500 GT Ro-Ro Ferry Ship of 48,595.0 kg.