In shipyard or marine industries, bulk size of steel plates and structures are used. As the ships have to float on seawater the hull and side wall’s steel structure remains dipped in salty water of sea. Special engineering technique is required to increase the resistance of these structures. Mec Shot helps marine industries by providing inline Surface Treatment Systems (STS) in preservation line.
Mec Shot STS includes preheat treatment for plates, blast cleaning chamber, blow-off chamber, painting chamber with flash-off zone for drying and baking chamber for baking the primed surface of thick plates.
Electric operated convection heating oven with both open ends to facilitate entry and exit of thick plate. The system is suitable for prolong operation. Maximum up to 60°C temperature is required eliminate the moisture from the job and assist in descaling of as well.
OperationsThe plate is kept on the inward side of the roller conveyor. The steel plates pass through inward tunnel and enter into the blasting chamber for blasting purpose. Numbers of blast wheel stations are located strategically around the cabinet fires shots on the components. 
The plates are shot blasted homogeneously on all side. The blasted plates moves forward and enters into outlet vestibules tunnel. A blower constantly blow-off abrasive accumulated on the blasted plates. The air washed and duly shot blasted plates come out from the tunnel to get painted in online painting chamber. 
The reverse jet filter cartridge dust collector is self cleaning system. All filter elements are automatically cleaned with the aid of timer card and solenoid valves. Anti-explosion vent is to be provided.
The semi down draft paint spray chamber is suitable for conventional, airless and electrostatic spray painting. It consists of painting chamber, inlet air filter, paint trap filters, axial flow fan, electric motor, duct and canopy etc. As the job passes through paint booth on slat conveyor, the reciprocating painting guns mounted on X manipulator will paint the plates from both sides.
At both side of this oven batteries of heaters are provided. The painted plates will enter in the baking oven where those painted plates will get baked. The temperature of baking oven is displaced through digital display type temperature controller along with PT-100 sensing probe for highest degree of temperature control depending on requirement.
The complete process is PLC controlled for various parameter and repeatability of process. The system is environment friendly.• Zero speed sensors for positive drives of screw and bucket elevator motors positive drive sensors have been provided.• Job presence sensors physical job presence sensors on the roller conveyer will signal for shot flow.• Job thickness sensors allow the settings of rollers brush wiper and blow fan.• Job width sensors control the airless painting guns stroke.
Contact:Vivek Mehra, Vice President – MarketingMec Shot Blasting Equipments Pvt. Ltd.E-279, M.I.A., Phase Ii, BasniJodhpur – 342005, Rajasthan Tel: +91-291-2740609, 2744068 FAX: +91-291-2742409mail@mecshot.com www.mecshot.com