“Marine Industry of Russia”
Exhibition Hall,
May 23-25, 2012
Time left till opening of the Forum:
5 days 2 hours 10 minutes
The Ministry of Transportof the Russian Federation FGU «Rostransmodernizatsiya»
General information partners
More on shipbuilding and ship repair equipment
Basic machinery used in building and repair of ships can be classified as follows:
- measurement systems used for operational control of ship status and provision of well-timed repair;
- cutting and welding equipment;
- transport systems used for transportation of seaborne machinery and components within shipbuilding and ship repair shops;
- surface working machinery (shotblasting and grinding equipment);
- paint spraying and drying units.
Automated Non-contacting Measurement Systems
There are various high-precision controls on the market, such as transit and distance-measuring theodolites, tachometers. They form the platform for industrial measurement systems used in engineer structure assembly as well as in tracking of construction deformation and settling with 0.1 mm precision. Special-purpose technologies and equipment based on laser-acoustic excitation of waves were developed and are used for intricate curved shapes.
Cutting and Welding Equipment
Mechanical cutting is the most widespread technology. It advantageously features in high productivity, environmental friendliness (no dust and gas), and possibility of high-grade cutting even of fine parts. However since the operator control is necessary, it cannot be fully automated. In this field such equipment is used as gate, up-cut, disk (rotary) shear and special shearing press with mixed shears.
Laser cutting ensures high precision and processing speed while decreasing product deformation. NC machine used for laser cutting are mainly automated. They can not only cut the product but label it.
As for welding, electric (fuse and pressure) and flame welding is currently popular. Flame welding cannot be automated in full and features with low fusion penetration. With limited working area at the staple, flux-cored welding with special units is used. Arc augmented laser welding seems to be prospective.
Transport Systems (Feed and Distribution Lines)
These are various cranes, trucks, suspended and rail transport systems as well as different conveying units the most actual of them are:
- suspended conveying systems considered to be the most flexible in operation (transported or processed products of small or medium weight are hooked or suspended with special lifting appliances – supports, pallets, etc.);
- band conveyors which are the most gentle in surface processing since owing to “soft” overturning on the band, products on the conveyor are in constant movement;
- roll conveyors (conveyor tables) convenient for operations with long components;
- pan conveyors are the most widespread standard conveyors.
Surface Working Machinery
When constructing and repairing ships, surfaces and mechanisms need corresponding handling, including pre-painting one. Currently, two basic treatment methods are used:
- rotoblast (shot cleaning);
- tread finishing (trovalization, barrel finishing).
Rotoblast advantages with environmentally safe clean the surface from corrosion, scale, old coat of paint and lacquer as well as reinforce and bright it.
Standard rotoblast and shot cleaning equipment comprises a compartment where the treatment is performed and an apparatus ensuring preparation and feeding of abrasive material to the surface.
The equipment used can be mechanical and pneumatic. When using mechanical (rotoblast) equipment, shot or other abrasive material is accelerated by a special rotor or turbine. When using pneumatic (rotoblast, shot cleaning) equipment, air power is used.
Abrasive materials can be various: round and faceted, made of steel or glass, electrocorundum or nutshell. Since abrasive is reusable, special filters, fans, vibratory cleaning bucket elevators, air separators and other mechanisms are used for its cleaning (recuperation).
Box operations can be automated and manual, which is convenient when small and complex surfaces are treated. Special small shot cleaning units which weigh only 7-8 kg are used for manual treatment. Post-treatment cleaning can be done by means of hand-operated facilities (industrial air driven suction cleaners, abrasive collection and regeneration units, etc.).
Tread finishing ensures high level cant rounding, surface leveling and maximum deoiling.
As finish facilities the following units can be used:
- all-purpose circular vibrators which can be used both for initial treatment and for final, “polishing” one;
- centrifugal units used both for initial and final treatment, however they are 20 times more effective than vibrators;
- transfer abrasive installations which are 5 times more effective than centrifugal ones and since the treated parts are fixed and do not touch each other, these installations rule out the possibility of damaging them.
Synthetic and natural components are used as grinding materials. Ceramics is used for high-grade leveling (burring, unevenness removal), brightening and features with optimum price/performance ratio. Synthetic abrasive material is used in gentle final treatment. Steel balls make the surface smooth. For deoiling, cleaning off small particles after polishing, and corrosion prevention, liquid materials are used.
Paint Spraying and Drying Units
Paint spraying and drying units can be split system (paint-spraying and drying booth) or be a part of a complex installation. As a rule, such complex comprises feed and distribution system, cutting and welding lines, shot blast cabinet and paint-spraying and drying line.
Depending on the model, painting can be manual or mechanized with fluid or powder paint. Generally, painting line used in shipbuilding and ship repair does not differ from those used for standard metal work treatment.
As for drying, the most popular basic method is hot air circulation. Air is heated by means of various heat generators and drier gauges ensure temperature maintenance. However, this method entails some operating costs. Less costly method is usage of infrared panels.
Situation in Russia
The same equipment is used both for construction and repair of ships and for treatment of other metal works and hardware items (cars, carriages and so on). Domestic manufacturers offer a great variety of corresponding facilities – from welding machines to shot blasters and customized paint booths.
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By: “Ideological buiseness-projects”
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