Technical Report The Construction of Alloy Wheels :: Design and Technology

Technical Report The Construction of Alloy WheelsIntroductionAluminium profane wheels are now utilize in all branches of repel Racing,ranging from Touring cars and Rally cars to Formula One cars. TheAlloy wheels offer far superior mechanical properties than theconventional steel wheels formerly used. These benefits includereduced un-sprung weight, i.e. non held by the suspension, providingmore precise steering input and improved responsiveness.Alloy wheels also improve acceleration and braking due to thereduction of weight. The added strength of a quality mixture wheel cansignificantly reduce wheel/tire deflection in cornering. This isparticularly critical with a vehicle equipped with high exercisetires where lateral forces may approach 1.0g. The metals in alloywheels are excellent conductors of heat - improving heat dissipationfrom the stops - reducing risk of brake fade under demandingconditions. Additionally, alloy wheels can be designed to allow moreair to flow over the br akes, this can help cooling.The alloy used in the finest road wheels today is a blend of aluminiumand other elements. The term mag wheel is sometimes incorrectly usedto describe alloy wheels. Magnesium is generally considered to be anunsuitable alloy for road usage due to its brittle nature andsusceptibility to corrosion.Nowadays, on that point are basically ternion ways in which alloy automotivewheels are constructed. The three types can be referred to simply bycast, billet and forged.Casting is a relatively flash way to produce a high-quality,fairly strong alloy wheel many aftermarket alloy wheels designed forstreet use are made this way. touch wheels are machined from a solidchunk of material and forging uses intense heat and pressure totransform a slug of alloy material into the utmost shape of a wheel.This report will focus mainly on the casting processes used.Casting ProcessesThe most common process of constructing alloy wheels is One-PieceCasting, there are a number of m ethods to do this, and the most basicis Die Casting, this process is used world wide throughout the castingindustry and is not exclusive to alloy wheels.The Die Casting process uses a permanent mould usually made of metal,which generally means that there is high tooling be compared toother methods of casting, but this high tooling cost is combined withlow production costs. This means that die casting is suitable forproducts with a large production number. on that point are four main processes in the die casting family, these areGravity Die Casting insistency Die CastingLow Pressure Die CastingSqueeze CastingGravity Die CastingThis process is the most simple of the four, the mould or die, whichis generally made in two halves, is filled with molten metal, in the