To the outside of the car wheels are equally important attribute, as a person - his shoes (the analogy is almost complete). A neat, polished "shoes" can revive the badly battered "suit." Therefore, the aesthetes in this matter is extremely meticulous.
However, besides aesthetic value, any accessory carries a lot of utilitarian functions. Wheel of the car communicates with the road, ensuring that it is moving. It is a pneumatic bus takes all the bumps and changes in the profile of the road.
A well-chosen auto the - this and safety on the road, and efficient fuel consumption, and longer transmission life, and excellent design.
Wheel drive cars are distinguished by their affiliation to a particular vehicle, the wheel design and manufacturing technology.
On manufacturing
- Steel
- alloy (cast and forged)
by design
- collapsible
- disposable (one-, two-, three-component) in the collapsible wheel disc and rim are connected by threaded connections.
Steel wheels
currently have the most widespread. Consist of a rim and welded to it drive (plates), made from sheet steel. Steel wheels equipped with most cars at manufacturing plants.
Features:
- low price;
- ability to recover from collapse, because the impact they burst, and crumple.
Disadvantages:
- a lot of weight;
- limited by design;
- low corrosion resistance due to the quality of coverage (the lowest corrosion resistance of disks coated with enamel and electrophoresis).
Alloy Wheels
They are made of alloys based on aluminum and magnesium by casting or forging. On many properties, they are better than steel. The main purpose of alloy wheels - to increase the attractiveness of your car.
Also, alloy wheels reduce the wheel weight, and weight reduction of a part (which includes the wheel) improves the smoothness, increases driving safety and reduces wear on suspension parts.
Given an ideal geometry, with good balancing completely eliminated the unpleasant vibration. Typically, the money spent on the set of cast wheels back at resale vehicle.
Light-alloy wheels in turn are divided into cast and wrought iron.
Alloy wheels
Cast CD has a granular internal structure of the metal, and this is its main disadvantage: if a long ride on potholes in the metal is in the process of accumulation of microcracks (invisible and therefore dangerous) that sooner or late show themselves - a large impact disk may split.
Disadvantages:
- frailty (to provide mechanical strength, it is necessary to increase the thickness of the walls, which reduces the coveted prize in weight);
- want to protect the surface, as without it the disc quickly covered with a whitish oxide film and loses its marketability.
Forged
Forged metal which has a layered fibrous structure is extremely durable. Forged keeps a heavy blow at the very least it is not broken, as cast, and bend without cracking, which is certainly safer. Crumple it is theoretically possible, but rather smashed suspension than pomnetsya flange forged wheels.
Features:
- High strength and rigidity;
- lightness and high corrosion resistance.
Disadvantages:
- high price;
- limited by design.
Pour and forge drive of aluminum and magnesium alloys. If you place the light-alloy wheels in order "from minus to plus" for purely technical parameters, the series will be:
- cast magnesium drive (easy, but whimsical, fast crack),
- die-cast aluminum disc (normal for These high quality)
- forged aluminum wheels (durable and easy)
- forged magnesium disk (heavy-duty and lightweight).
But with the drive, understandable, not only the technical parameters of the play. Advise immediately reject extremes: magnesium wheels, as cast and forged - very rare, they usually do only custom-made for sports cars. The price of magnesium may be $ 1000 apiece.
