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Reparos em plástico

Plastic Repairs

Carroceria · página 312 de 566 · 501-25-54 · parte 5 de 6

Página 312 do Manual de Carroceria: Reparos em plástico
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501-25-54 Body Repairs - General Information 501-25-54 DESCRIPTION AND OPERATION openings to ensure the original strength properties. Tools and equipment also familiar from paint repairs can be used in making adhesive repairs to thermoplastic components. Angle grinders and belt sanders can be used to grind out scratches and splits. Orbital sanders with extractors are used for fine sanding. The infrared heater is used to provide fast and certain drying throughout. Plastic adhesive set TO BE UPDATED LATER Item Description 1 2-component adhesive 2 Cartridge gun 3 Mixing tube Apart from the components shown, other materials may be needed to bond plastics, depending on the repair position. For large scale repairs, it may be necessary to insert reinforcement panel strips and reinforcement matting as fixing aids. Repair sequence during plastic adhesive bonding: NOTE: Follow the manufacturer's guidelines when using adhesives. ‡ Prepare the location of the bond. Remove paint residues and sand the area to be bonded. Drill out the ends of the split to stop it spreading further. Prepare the bond location into a V-shape and clean it with plastic cleaner. ‡ Apply the adhesive. The two-component adhesive is applied to the cleaned and primed repair location using a hand gun. Spread and smooth the adhesive using a flexible plastic spatula. ‡ Rework the bond location. After cooling, sand the raised adhesive. Clean the sanded repair surface using plastic cleaner. Apply plastic primer thinly to the repair surface. Apply paint. GRP repairs GRP material is hard and brittle in its strength properties. Because of these material properties, splits and openings often result in cases of serious damage. The stability of GRP parts is impaired if the glass fiber reinforcement is cracked. The component must be replaced in cases of serious damage that affect the structure. Minor damage (such as abrasion, splits up to 80mm, holes up to approx. 60mm diameter, etc.) can be repaired to a technically and visually perfect standard, provided that the damage does not occur in heavily used or hard-to-reach areas. To ensure perfect repair results, observe the following points: ‡ The room temperature should be at least 15°C and the air should be as dry as possible. ‡ The repair location must be thoroughly dry and clean. ‡ Before the repair, the GRP part being repaired must be dried using an infrared heater or in a drying oven. ‡ In cases of large splits and fractures, the strength of the outer skin can be re-established by backing with a reinforcement material. Tools and equipment from the paint shop can be used to carry out repairs to GRP parts. Angle grinders and belt sanders can be used to grind out scratches and splits. Orbital sanders with extractors are used for fine sanding. GRP repair set TO BE UPDATED LATER