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Ford Explorer Center Cap (1999 - 2001), shown mounted to a cast aluminum wheel. A center cap, or centercap is a decorative disk on an automobile wheel that covers a central portion of the wheel. Early center caps for automobiles were small and primarily served the purpose of keeping dirt away from the spindle nut and wheel bearings of vehicles. [1]
Wire wheel center caps in the 1930s had a spring-loaded retention clip system that has been used on many hubcaps and center caps on every style of car and truck to the present day. [citation needed] Steel wheels in the 1930s had retention clips mounted to the wheel that snapped into a lip in the back of the cap. Wood wheels were a special option.
Legislative bills were proposed in several US states to ban spinner-type wheels and hubcaps that simulate movement even when a vehicle is stopped because they could be disconcerting to other motorists and present a safety hazard. [20] [21] Spinners were popular during the early-2000s within the hip-hop community of the United States. Since the ...
Diammonium phosphate (DAP; IUPAC name diammonium hydrogen phosphate; chemical formula (NH 4) 2 (HPO 4)) is one of a series of water-soluble ammonium phosphate salts that can be produced when ammonia reacts with phosphoric acid. Solid diammonium phosphate shows a dissociation pressure of ammonia as given by the following expression and equation: [2]
The term "mag wheels" became synonymous with die-cast wheels made from any material, from modern aluminium alloy wheels to plastic and composite wheels used on items like bicycles, wheelchairs, and skateboards. [4] [5] However, pure magnesium wheels are no longer produced, being found only on classic cars. Pure magnesium suffers from many problems.
There are two common methods to manufacture diamond grinding cup wheels: hot pressing and cold pressing. The hot pressing method is to directly sinter the diamond segments in molds under a certain pressure in the dedicated sintering press machine, and then fix or connect the diamond segments onto the grinding wheel’s body via high-frequency welding, laser welding or mechanical mosaic method.
Giving dap is a friendly gesture of greeting, agreement, or solidarity between two people that has become popular in Western cultures, particularly since the 1970s, stemming from African American soldiers during the Vietnam War.
Cellulose acetate phthalate (CAP), also known as cellacefate and cellulosi acetas phthalas, is a commonly used polymer phthalate in the formulation of pharmaceuticals, such as the enteric coating of tablets or capsules and for controlled release formulations.