10:51 AM 25 Oct, 2021
Off-Road Rims: What You Need to Know About Them
Many drivers, being happy owners of an off-road car, try to install alloy wheels on it, which are presented on the domestic market in a fairly wide range.At the same time, the main criterion that most often pays attention to is the design of the wheel. However, it should be understood that it is necessary to be guided not only by the appearance of the goods.
As you know, according to the manufacturing method, rims for SUVs can be divided into three main types: stamped steel, light alloy cast and forged.
Off-Road Steel Rims
Wheels from this category are the cheapest and easiest to manufacture. Their rim is rolled from steel strip and welded to a stamped steel disc. Such wheel models are usually installed at large car factories. The undoubted advantage of such wheels is the possibility of straightening if the wheel is suddenly crumpled due to a collision with an obstacle, as well as the fact that these products are crushed, but not broken.
The disadvantages of such wheels are a large mass and low corrosion resistance. In addition, their appearance usually leaves much to be desired. Currently, specialized companies produce discs from special steels, which stand out in terms of design and are lighter than standard options, but also cost a little more.
The production technology of cast wheels involves the use of aluminum or magnesium alloys. Their main advantages are low weight (approximately 15-30% lower than that of steel models), high strength characteristics and corrosion resistance. Unfortunately, the surface of aluminum wheels is covered with an oxide film, which worsens their appearance. Therefore, cast off-road wheels are treated with several layers of durable varnish, which is resistant to adverse environmental influences.
The main disadvantages that cast wheels have are the high cost and the inability to restore if they were crushed after hitting an obstacle. Moreover, the cast metal does not have a directional crystal structure, so the wheels have to be made thicker to provide the required mechanical strength.
Forged Off-Road Wheels
The rims, known as "forged", are produced by hot stamping technology from magnesium and aluminum alloys. Their advantages are low weight, high strength and rigidity characteristics, as well as very high corrosion resistance. They do not require additional surface protection. In the event of a collision with an obstacle, the forged wheel will be crushed, but not destroyed, and cracks will not form in it. During forging, the structure of the metal is fibrous, and during manufacture, the necessary direction of the fibers can be set, due to which the product is given the necessary strength. Forged wheels have a mass 1.5-2 times less than steel wheels with the same dimensions.
The main disadvantages of forged wheels are high cost. Due to the peculiarities of production, the appearance of forged wheels is not as representative as cast ones.
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