due to lack of proper press equipment. 3. The density of aluminum alloy is almost 3 times less than steel. Aluminum crankcase with the same thickness three times easier than steel. Meanwhile, a sheet has to bend, and to protect selected soft alloy, the strength is lower than the strength of steel. To achieve acceptable stiffness, increase the thickness. As a result, the gain in weight is not obtained.
Aluminum alloy, a protective layer is damaged on the obstacles, oxidized, but thanks to the gray color of the oxide is not so much noticeable, like corrosion on the steel surface. Cost aluminum crankcase in five to six times more expensive than steel. 4. Plastic Manufacturer of plastic protective casing for reasons of cheaper technologies have moved from the glass, time-consuming to manually lay out on the chopped glass fiber (pulp), comfortable sprayed a special gun. But the fact that only a seamless fiberglass, reinforced resin (binder), can provide its high strength. In the case of pulp its individual particles are not related with each other, and a crankcase has the properties of the resin.
This is about the characteristics of the monitor computer. Tolerant properties are achieved in this case, only thicker. As a result, plastic cover obtained significantly heavier than a similar strength and stiffness of the metal. The only consolation – the weak strength of protection of chopped glass fiber offers hope that in a frontal crash protection and burst not interfere with the engine to go down. Metal crankcase after a strong blow with a sledgehammer to straighten your garage, the protection of the same of chopped glass fibers of such a strike just burst, and you have to buy a new one. Meanwhile, during the state of the car in a traffic jam in hot weather plastic crankcase can be heated from the engine so that produces hazardous compounds, which are sucked into the ventilation system car and get into the lungs of the occupants. 5. Crankcase AvtoSchIT AvtoSchIT Company uses a powerful pressing equipment that enables to produce light and rigid crankcase, reliably protecting aggregates car. Cutting sheet produced by plasma cutting, ensuring protection carter smooth contours of any shape. Mass models crankcase manufactured by stamping in the individual dies of steel 2 mm thick. On the advantages of protection, manufactured using this technology, as described above. Less massive models provide rigidity deep rifts – the ribs with a pitch of 100 mm. the entire width of the crankcase protection, molded in the die. Protection for SUVs and minivans are made of steel with a thickness of 3 mm. Powerful press equipment allows molded ribs including at them.