Teknologi Dan Rekayasa FITTING OF SHIP CONSTRUCTION

CUT TING PLATES/PROFILES 1. Cutting flat plates to the required profiles has In the past decade become highly automated, very sophisticated machine tools having been introduced for this purpose. In the main, cutting is achieved by the use of an oxy-fuel flame or plasma Arcs. 2. PLATE PROFILERS Where a plate is to be cut into one or more, or a series of complicated shapes, a profiling machine is employed. At present where these employ gas cutting, the machines are generally referred to as ‘flame profilers’. All flame, or plasma-arc profilers have some form of auto-matic control Teknologi dan Rekayasa

Flow Of Production Process) Fabrication Shop Teknologi dan Rekayasa

CONSTRUCTION COMPONENT CUTTING 1.Display detail structure plan and ship building component . 2.Display connections. 3.Display structure lasing. 4.Display development standards and code for modern slip with facilities numerical cutting (nc) necessary done ready- drawing to nesting-plan. Teknologi dan Rekayasa

Flame Cutting Control System Teknologi dan Rekayasa

Forming machines • Using mechanical or hydraulic presses. Shearing machine (mechanical) • Using mechanical or hydraulic presses. Forming machines 1) Mechanical presses - energy stored in a flywheel is transferred to the movable slide on the down stroke of the press. - quick - acting , short stroke. 2) Hydraulic presses - slower - acting, longer stroke. Hydraulic deep drawing press Teknologi dan Rekayasa

Bending of machine

Bending and Contouring Three-roll bender: sometimes does not provide uniform deformation in thin- gauge sheet due to the midpoint of the span ,localisation of the strain. Often need the forth roll. (b) Wiper-type bender: The contour is formed by successive hammer blows on the sheet, which is clamped at one end against the form block. Wiper rolls must be pressed against the block with a uniform pressure supplied by a hydraulic cylinder. (c) Wrap forming: The sheet is compressed against a form block, and at the same time a longitudinal stress is applied to prevent buckling and wrinkling. Ex: coiling of a spring around a mandrel Teknologi dan Rekayasa

Bending and Contouring Pipe bending machine Profile bending machine Teknologi dan Rekayasa

Bending • A process by which a straight length is transformed into a curved length. • produce channels, drums, tanks. Teknologi dan Rekayasa

Gap Presses Teknologi dan Rekayasa

Forming Shell Plates HEAT LINE BENDING The ‘heat-line’ bending procedure is a widely used technique toobtain curvature in steel plates for shipbuilding purposes. Teknologi dan Rekayasa

Frame Bending Teknologi dan Rekayasa

The End