Alloy wheels are made from an alloy of Aluminium or Magnesium. Alloys are the mixtures of pure metals and other elements. The reason for opting alloy wheels is that these provide greater strength over pure metals. On the other hand, Aluminium and Magnesium alloys offer same strength at the lighter weight with better heat conduction and improved cosmetic appearance over pure metal wheels. Although steel is also an alloy of Iron and Carbon, the term ‘alloy wheel’ is reserved for wheels made from non-ferrous alloys. Many owners also prefer heavy stainless steel rims in their vehicles due to being a heavy-duty variant and aesthetically beautiful.
Alloy and Steel Rim Straightening: Potholes, raised manhole covers, or curbs, are a few obstacles that can bend your wheel. In such cases, the bend announces itself by causing the car to vibrate or making abrupt sounds.
Back in the dark ages, when both men and wheels were all steel, a good mechanic could take a bent steel wheel and pound it out with a hammer. This technique was not very precise. However, the mechanic was still able to bend the steel back to the point where the wheel could make contact with the tire and hold air.
Nowadays, some mechanics still offer to hammer out bent Aluminium wheels. Do not allow any mechanic to hammer out your Aluminium wheels as most likely the outcome will be a cracked or destroyed wheel. Even if it does not crack, the alloy will be damaged and will never be the same. The best way to deal with such a situation is to visit an auto-shop that has modern wheel straightening equipment that can get the job done without any issues.
At Sundar Tyres we are well-equipped to deal with such a situation with technologies supported by high-tech equipment and experienced technical staff. We do not believe in hammering out every situation as we trust in precision. Some of the techniques popularly employed by tyre retailers and reputed auto-shops are explained here.
- Cold Roller Technology: This technology involves placing a mechanically-powered roller against the wheel and pressing the bend out as the wheel spins on a broaching machine. No actual metallurgy or annealing is performed in this process and this is carried out without any heat. This is a major reason that this process carries a significant risk of cracking the wheel. In addition, this method is restricted to radial bends and generic machines cannot affect the wheel laterally.
- Hydraulic Assistance: It’s a technique that requires the wheel to be placed on a rack which centers the wheel to read it through a dial gauge. The wheel is then heated and rammed by the hydraulic rams located at various points on the rack. However, the efficiency of this technique entirely depends on the skill of the operator. A skilled and experienced operator can make your wheel new in no time whereas an inexperienced operator can ruin it in no time.