Chrome plating & Chrome Plated
Chrome plated wheels. How to spray the wheel with a coating of lacquer. Is only one way. To maintain the splendor of the ward to ward off a shadow to shadow, but can not stand the shine of the chrome plating. The chrome plated wheels on cars. The problems that Plate, then take the time to peel off a thin sheet. Plated wheels because the time is not good enough quality chrome plating. Standard plating. Chup Chup is not a problem if it is not good. Bubbles are formed. Finish the season off a long time ( because the wheel. Often the friction. And must withstand high heat ).
In a country like America. The Japanese tend to use parting or components. The coating CHROMES reasons for its beauty and durability of various automobile manufacturers. Start to finish.The premium comes with chrome bumpers, car bumpers and other parts, including parts made of plastic, about 50 years ago was 20 years ago, the aluminum alloy for casting. To serve as a vehicle. Which is very popular. For consumers. However later, facing the CORROSION because in winter with snow. Necessary to remove the salt. To accelerate the snow melts faster evacuation.On the road because they are loaded with salt. This result in tremendous waste. Aluminum wheels with the surface color only.The salt will corrode the wheel is white (WHITE RUST), which causes corrosion and loss of a wheel. When the surface of the aluminum wheels on the back. Adhesion of the color of the paint is peeling off the life of the wheels Aluminum alloy shortened to just 1-2 years.
Latter, the car manufacturer. The research and find a way to finish on Aluminum alloy wheels. The better the coating with a new color. This technology brings. The electrochemical coating was used. How it is. Chrome plating. Besides durability. Corrosion betters than color. What follows is a byproduct. Beauty and the adhesion among the coating on the surface of the aluminum wheel. Stronger than the surface in other ways. So, chrome plated wheels. It is very popular in overseas American, European and Japanese car manufacturer's were like DAIMLER CHRYSLER, JAGUAR, FORD, LEXUS, FERRARI has set standards for the use in the manufacture of wheel-plated chrome. Products for use in their various vehicles such as ASTM for auto companies that manufacture in America, such as FORD MUSTANG.
JIS is a standard In production for automobile manufacturers in Japan, such as LEXUS ES300 DIN is used for cars. Which originated from Europe, such as JAGUAR S-TYPE, X-TYPE, but standards are mentioned. There are similarities. This is the standard The chrome plated wheels are closer together.
ADHESION TEST
Why?. Surface chrome plated surface of the wheel, so the island is better than coating with paint or plating SPUTTERING because before all the wheels. The surface until smooth. The finish SPUTTERING is the process of polishing. The surface must be smooth. I want to get rid of pores (PITTING) arising from the process of casting out the holes will be trapped air. When the coating to cover the air will expand. The pressure plate is blisters on the skin. When the heat roller. Vehicle speeds. The plate has a coating to peel off later.
Another reason that makes the surface of chrome plated wheels, better adhesion to the surface coating is SPUTTERING after polishing it. Before plating, etching the surface of the wheel is a small crack (MICROCRACK ETCHING), which is invisible to the naked eye, is intended to be embedded into the surface coating (ANCHORING) on the surface of the wheel. And the adhesion between the coating surface. On the surface of the wheel INTERLOCKING (if it is to visualize it, think about the roots of a tree. China to penetrate into the soil) where electricity only. To contribute to the adhesion in accordance with ASTM B571 was determined to test the adhesion of the plated surface. The saw cut through the steel wheel and a second portion of the test is that it requires no surface coating to peel off from the surface of the wheel. Even as a little This means that Wheel or wheels of the accident, the edge of the footpath surface will remain coated and washability. On the surface of the wheel there. Another way to test that. When I get a high temperature. From the car to heat can cause the skin to peel off the plate or not. The test, known as the HEAT SHOCK is already chrome plated wheels. To fire until the temperature at 120 ° C, then dipped in water at room temperature immediately. The results of the test. Is that there can be no blisters or skin peeling off the plating. That means that the adhesion of surface coating on the surface of the wheel. In a state of vacuum.
CORROSION RESISTANCE
May be wondering why?. Aluminum wheels are coated with shiny SPUTTERING unable to withstand the corrosive environment. On the road, an acid - alkaline, because the spray does not have a uniform arrangement of molecules. Should result in a pore. As to not see many on the floor of the coating. The permeability to water and air reacts with aluminum to make new aluminum oxide. This will eat away the surface of the aluminum, then go to the area on the surface of the aluminum on the structure of molecules. Glossy finish, it will not be able to cling to. Then fade out. For this reason, the chrome plating has an advantage over. The chrome plating has several electrochemical mechanisms. This helps to prevent corrosion from this cause. The car manufacturers. Be specified as part of Standard plate Aluminum wheels. 3 ASTM standards and has been specified.
THICKNESS TESTS.
The thickness of the coating surface are important variables that will help. Because of the corrosion resistant coating by electrolysis. The arrangement of molecules in the surface coating has a thickness that is orderly and uniform. The chrome plated until the desired thickness as required. No porous coating on the surface of the water. And air to seep through easily be determined in accordance with ASTM B504 units of microns thick as 30 microns or 80 microns, depending on the surface of the coating layer. Thickness measurement by using X-RAY PROCESSOR, which is used to control and processing. Because they have high accuracy. Electrical potential difference (STEP TEST) mechanism to prevent corrosion. In this manner only. Coated with chrome plated only. The surface coating layers, each layer has a total of 8 electrochemical properties. This will have a metal coating on the surface only. Material coated with a coating made of plastic, of course, SPUTTERING, no such features. The mechanism of this property. Surface of each plate.The nickel is the electrical potential difference. Where the voltage is measured in units of milli volts. As a barrier (BARRIER), covered on the surface of the wheel. Prevent corrosion from the outside. To destroy the surface of aluminum in accordance with ASTM B764 to set the voltage to 120 mV and 20 mV (FORD MOTOR SPECIFICATION) measuring the potential difference. Measured by the value COULOMETRIC METHOD voltage is higher or lower depending on the amount of SULFUR, which must be controlled closely in PRODUCTION LINE such that the thickness And the voltage. Directly result in the prevention of corrosion. Because they need to be tested. To confirm that the chrome-plated wheels. It is resistant to corrosion.CASS TEST such a way that the ASTM B368 standard tests made by the wheels of steel surface after the entering into the incubator experiment. This is a solution of COPPER CHLORIDE AND ACETIC ACID sprayed onto the surface of the wheel that controls the pressure and PH value, as defined. After 66 hours the test will not be any traces of corrosion, so it will be tested. These results confirm that the chrome plated wheels through a premium. It is in beautiful condition for many years the standard 66 hours to comply with the requirements of DAIMLER CHRYSLER, GENERAL MOTOR, etc. The surface of the plate (APPEARANCE) with a surface coating of the metal. A brilliant shine. No dull. Because of the chrome plated surface will not react with air and the oxide (rust) and surface plated metal with high hardness. Do not scratch easily as opposed to a surface coating SPUTTERING it this way. Throw over a marker.(Made of plastic) to cover the top with glossy finish that is sprayed on the bottom. The coating is a marker. Because the glossy finish on the floor. Cannot be exposed to the air. The glossy finishes is exposed to air, it will be dark soon. And pealing off. A personal marker. Usually, a simple scratch from a car wash or a fragment of stone on the road. And cannot withstand UV. UV sunlight will fade to a dark marker and loss of adhesion. When a marker is scratched or dull, this means it will loose its shine as well. If a marker is removed when(Possibly from a fragment of stone on the road) and the glossy finish is dull when exposed to air. Because they are very popular SPUTTERING to finish the job that it's set in an umbrella like toys or furniture. I have a very low cost. All the foregoing. The chrome plating process. Will protects the surface of the wheel, the second direction is to prevent the air pressure beneath the surface plating out (INSIDE OUT PROTECTION) because it is in a vacuum. And prevention of pollution from outside. Destroy the surface of the wheel (OUTSIDE IN PROTECTION) for other parts of the car company used a chrome plated. To be used as a component of the vehicle. It contains, details about the standards of the plate. Are different depending on what parts they use are part of the car as the miles on the meter or by hand to open the door. Perhaps the thickness. The voltage or resistance to corrosion than the aluminum wheels. It is a parts manual. However the car's bumper or grille is, chrome plated. I have higher standards.It must withstand pollution outside the car. Standards mentioned above are just some of the key only. The number of the ASTM or JIS standard has been defined and contributes to its beauty. And durability of chrome wheels as standard, which is controlled DUCTILITY matter. The flexibility of the coating surface. On impact the car or MICRO POROSITY, a standard support feature. The corrosion resistance of chrome plated wheels.