| 摘要 |
The sailing boat rudder production process of rudders in one piece, i.e. the monocoque system: a two-part symmetric mould from a firm material is covered in a release agent, then the laminated rudder shell is produced and the rudder axis with spokes is inserted into the laminated bottom half of the shell. Next, a layer of "combi flou" is applied and the bag is positioned into the mould. A strip of three layers of glass fibre fabric is attached over the "combi flou" fabric and the bag, so that half of the strip width covers the bag. A layer of glass fibre fabric is placed under the rudder axis and Termanto strips are placed under the spokes. The glass fibre and mat fabric are applied over the spokes and wound around them. Pipes for a two-way airflow are attached to the bag and the air is sucked out of it. The two halves of the mould are firmly attached together and air is blown into the bag. After an hour, the bag is removed from the mould. When the resin in the rudder has dried, PU-foam is injected into the mould. After about an hour the mould is opened and the rudder can be removed from it. The excess resin is then trimmed off and the openings that formed during filling with PU are sealed. |
