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korosi+kapal+baja KOROSI KAPAL BAJA 

Corrosion of steel ships resulted in the decline of strength and life of the vessel, thus reducing the safety assurance cargo and passenger ships. To avoid greater losses due to sea water corrosion corrosion protection is required on a vessel plate. corrosion in the vessel can tackle a variety of ways such as by using a sacrificial anode vessel and paint the ship. The ship is a steel vessel with all the buildings are made of steel alloy with a chemical composition suitable for ship construction standards issued by the bureau of ship classification (Standards: ABS, BKI, DNV, RINA, GL, LR, BV,, NK, KR, CCS and etc. ) with steel class: A, B, C, D and E.

(Grade: A, B, D, E, AH32, AH40, DH32, DH40, A32, A36, D32, D36 and etc.) with thickness: 8 mm s / d 100 mm, width: 1500 mm s / d 2700 mm, length: 6 ms / d of 13 m. Steel for ship construction is generally divided into three parts, namely ordinary steel ship construction, ship construction steel with high voltage, and steel forgings. Steel for ship construction has mechanical properties that have got approval from the BKI.
The following are the mechanical properties of the vessel steel plate by BKI in 2006
mechanical properties of + steel + plate + ship + + + according to BKI CORROSION OF STEEL SHIPS
Use of steel plates for ship building has a high risk of damage, especially the occurrence of corrosion on a steel plate which is an electrochemical process, due to sea water environments that have very low resistivity + 25 Ohm-cm, when compared with fresh water + 4,000 Ohm-cm, ( Caridis, 1995) and in accordance with the positioning plate on the hull.
The position of the hull steel plate is divided into three parts, namely:

    Always water submerged the base plate strip, plate bilga lane and lane side of the plate until the full minimum.
    And out of the water column of the plate side of the ship laden water at least up to a maximum laden water
    No water submerged the plates from the side lane up to a maximum laden ship's main deck

Corrosion of steel vessels can be divided into 5 types of corrosion that is equitable, pelobangan, stress corrosion, erosion corrosion and corrosion crack.

    Cloudy corrosion or uniform corrosion throughout the surface of the plate is usually attacked by corrosion on the plate that is above the water line.
    Pelobangan corrosion (pitting corrosion), on the surface of the plate place the longer holes that will grow in and eventually be able to penetrate the vessel plate.
    Stress corrosion (stress corrosion), corrosion of the plates that bear the major burden.
    Erosion corrosion (errosion corrosion), corrosion occurs on the receiving material flowing fluid particle collisions at high speed.
    Gap corrosion (crevice corrosion), corrosion occurs in the gap, the tongs, the connection and the area covered animals and small plants.

Corrosion of steel ships can be reduced to a minimum so that the corrosion rate of steel vessels get smaller, the corrosion can not be stopped 100% due to ship steel as well as humans even though we are very good at keeping the health of the ends is dead also. as well as corrosion of steel ships, we can only suppress the corrosion rate to a minimum so that life can ship in accordance with the original plan in order to suppress the value of the losses by comparing corrosion in steel vessels

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