The present invention relates to a method for forming a coating, and more particularly to a method for forming a coating on a wheel and the structure of the coating.
With reference to
However, the coating slice (53) cannot be fully corresponded to the rim (51) and a gap (531) will be formed between the coating slice (53) and the rim (51). Therefore, the wheel body (50) can easily get dirt when the dirt got stuck in the gap (531) after being used for a period of time, and finally the dirt covers the rim (51) so that the vivid appearance of the conventional wheel will be disappeared.
Furthermore, the coating slice (53) will be gradually peeled off from the rim (51) due to the vibration caused by using of the conventional wheel because the coating slice (53) cannot be fully tightly corresponded to the rim (51). The peeling-off situation may cause some parts of the coating slice (53) raised from the rim (51). On one hand this situation may get people injured when under repairing, and on the other this situation will make the appearance of the conventional wheel looks messy.
The weight of the combination of the wheel body (50) and the coating slice (53) will be increased so that the waste of the fuel will be produced when a driving car has the conventional wheel with the coating slice (53) equipped.
The coating slice (53) is easily to be formed a difference of thickness when being rolled on the rim (51), which will make the center of the gravity of the conventional wheel turn aside, so that the conventional wheel will be easily vibrated due to the reason of the deviate of the center of the gravity when operating and accelerate the damage of the wheel body (50).
The present invention provides a method for forming a coating on a wheel to mitigate or obviate the disadvantages of the conventional wheel.
The main objective of the present invention is to provide a method for forming a coating on a wheel and the structure of the coating.
To achieve this objective, the method and the structure in accordance with the present invention comprises a wheel body and a sidewall is formed thereon, at least one indicating zone is set on the sidewall and at least one recess mark is defined therein.
Below are four surface treatments to make a coating on the wheel body.
The foregoing has outlined some of the pertinent objects of the invention. These objects should be construed to be merely illustrative of some of the more prominent features and applications of the intended invention. Many other beneficial results can be attained by applying the disclosed invention in a different manner or modifying the invention within the scope of the disclosure. Accordingly, other objects and a fuller understanding of the invention and the detailed description of the preferred embodiment in addition to the scope of the invention defined by the claims taken in conjunction with the accompanying drawings.
As shown in FIGS. 1 to 8, a method for forming a coating on a wheel in accordance with the present invention comprises the following steps.
Step 1 is a surface powder painting process. In this process, a wheel body (10) is previously processed to make an outer periphery of the wheel body (10) clean and dry, and a mass of powder is spread on the wheel body (10) and baked. The outer periphery of the wheel body (10) is painted to form a color layer (20) after being baked to make the wheel body (10) perform a desired color.
Step 2 is a surface enameling process. In this process, the baked wheel body (10) is coated with enamel to form a guarding layer (30) in order to protect the wheel body (10) from being scrubbed and corroded. The composition of the enamel contains 76% of Resin, 23% of Additive and 1% of Flowagont. The resin includes Acrylic Resin Polymer for being a main reagent and Amino Resin Polymer for being a cross linker.
Below is the chemical formula for the Acrylic Resin Polymer, the percentage of the composition is generally form 50% to 80%. In the preferred embodiment of the present invention, the percentage of the Acrylic Resin Polymer is 53%.
Below is the chemical formula for the Amino Resin Polymer, the percentage of the composition is generally 20% to 40%. In the preferred embodiment of the present invention, the percentage of the composition of the Amino Resin Polymer is 23%. The purpose for the cross linker is to make the powder, the color layer (20) and the guarding layer (30) attach one another easily:
The flowagont contains 0.1% to 0.8% of Paraffin wax for being used as a leveling and wetting agent and the formula for the Paraffin wax is CH3(CH2)14C—O(CH2)24CH3 or 0.1% to 0.8% of Silicon for being used as a Leveling and wetting agent and a Defoamer, the formula for the Silicon is SiR2O.
The Additive contains 10% BaSO4 which has a function to erase the holes formed on the surface of the guarding layer (30) and increases the thickness of the guarding layer (30), and 12% SiO2 to make the guarding layer (30) have anti-acid and anti-alkali qualities.
Step 3 is a surface turning process. In this process, the color layer (20) and the guarding layer (30) are partially removed to form an indicating zone (12) so that the recess mark (121) in the indicating zone (12) still keeps the color layer (20) and the guarding layer (30).
The last process, step 4, is a surface electroplating process. In this process, the wheel body 10 will be surface-electroplated to form an electroplated layer (40), but the recess mark (121) will not be electroplated due to the insulation of the guarding layer (30) so that there will be a visional difference between the color layer (20) and the electroplated layer (40) on the appearance of the wheel body (10). This process can also be instead of plating with chromium.
Here are the advantages of the present invention:
The present invention includes that contained in the appended claims, as well as that of the foregoing description. Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present invention of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts any be resorted to without departing from the spirit and scope of the invention.