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Stx heavy industry
The main business: shipbuilding , engine and water treatment The presented process : shipbuilding
3 part of shipbuilding in stx industry 1. steel cutting 2. block 3. deck house
1. Steel cutting process
Cutting Equipment FLAME PLANER
Principle of cutting process Gas cutting The way to cut By The heat of metal and oxygen gas. Plasma cutting The way to cut By arc discharge using the electrical energy.
2. Block process Welding(assembly) painting
welding Welding joins metals by melting it and adding a filler metals to form a pool of molten metal that cools to become a strong joint. Energy sources: gas flame, electric arc, laser, friction.
Welding used in block *Submerged arc welding *Gas tungsten arc welding *Gravity welding *CO₂ gas arc welding
Submerged arc welding Weld arc is covered by a flux powder which is fed into the weld zone by gravity through a nozzle. Flux completely covers the molten metal and prevents weld from oxidization and spatter. http: //www. youtube. com/watch? v=Uns 93 e 4 Ha. NU&feature=related
Gas tungsten arc welding GTAW(텅스텐AW)=TIG(Tungsten inert gas) A filler metal is supplied from a filler wire. http: //www. youtube. com/watch? v=VEEpik. DY 058
Gravity welding Gravity devices use the weight of electrode and holder to produce arc movement along the joint
CO₂ gas arc welding use CO ₂ gas in protective gas as a kind of gas welding GMAW(gas metal arc welding).
painting The finished block will be transported to the paint shop by the transporters. it was clothed through secondary , tertiary painting of the ship after the primary blasting work.
Painting Surface preparation Surface Inspection Painting Dry Final inspection (Block) Dry Touch up
3. Deck house Process is similar to block As deck houses are manufactured based on the requirements of individual ship owners, building a deck house requires the highest level of technology, and experts who are able to meet the diverse needs of customers