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Frequently Asked Questions
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An alloy is a mixture of at least two or more metals and/or other chemical elements. A few of the metals commonly used to make Aluminum alloys include boron, copper, lithium, magnesium, manganese, silicon, tin, and zinc.
Aluminum alone has good corrosion resistance but is softer and more ductile then an Aluminum Alloy. Pure Aluminum metal but does not have the strength and durability needed for automotive wheels. Aluminum Alloys are typically lighter and stronger than pure Aluminum. The strength and durability of Aluminum Alloys vary widely not only as a result of the metals and/or other chemical elements components of the specific alloy, but also as a result of manufacturing processes and heat treatments.
It can happen but it is rare. Typically forged wheels do not have porosity and do not pit when chrome plated. Sometimes the forgings can have a forging defect from surface contamination that can leave pit marks. These pits on the surface of forging are caused by improper cleaning of the stock used for forging. The contamination gets embedded into the surface during forging creating pit marks. The Aluminum Alloys itself may have contamination and impurities in it. The contamination and impurities may cause porosity voids or outgassing. Forged wheels with surface corrosion can have pitting. These forging flaws, porosity voids and corrosion pitting in the aluminum alloy base metal if large enough may not be completely filled in during finish or chrome processing and may show through the new finish as a pit.
Many things cause outgassing. Outgassing can be attributed to the metals and/or other chemical elements in the Aluminum Alloy metals and to surface contamination. Outgassing can occur for the following reasons. Both sand and die-cast pouring processes trap gases in castings. Mainly from solidification shrinkage, contamination and trapped air or hydrogen gases when molten metal solidifies. The addition of metals and/or other chemical elements such as Zinc and Silica in Aluminum Alloy can cause outgassing. Contaminants such as silica sand results in sand particles being embedded in the casting, oils, fluxes, water vapor, mold release, reactions to the mold, external components and or any other material that can vaporize during processing can cause outgassing.
No, not completely. However, there are some things we can due to reduce outgassing such as heating and cooling the wheel in between each process. This will help let the gasses escape and reduce the overall outgassing blisters and pits. We typically dont know we are having outgassing issues until the finish is completed and the finish blisters or pits. When this happens, we may have to completely remove the finish and start over. Unfortunately, this delays the entire finish processing time. Occasionally, this happens more than once. At some point we have to say thats as good as we can make the finish because the base metal of the wheel is too poor.
Polishing swirl marks may be visible in areas difficult to access and may vary due to wheel size and design. We cannot get a large buffing wheel into every location to polish the wheel so hand polishing tools are used in these difficult to access areas. Unfortunately, even small hand tools may be too large to properly detail polish the deep recessed areas such as windows or between the spokes. The same problem occurs after the copper plating process has been applied, as it too requires polishing to press the copper into the pours of the metal to eliminate porosity. This pressing is primarily done only to the face of the wheel utilizing upright polishing machines. When required hand tools again are necessary to push the copper into the surface but achieving a perfect result is difficult due to the size of the area which the tools are required to work into. Years past these areas were left rough and would require painting to hide the undesired rough texture. With years of developing better polishing techniques and the development of small hand tools, swirl marks have been minimized resulting in a better full detail polish that todays customers have come to expect.
We are able to sell you many types of wheels even beyond what you see on our web site.
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