JPS5920701A - Colored wheel for automobile and motorcycle - Google Patents

Abstract

PURPOSE:To obtain a colored wheel of which colored coating film has been improved in peel resistibility by such an arrangement wherein a colored coating film is composed by such a method that the surface of a wheel made of steel is first electroplated by nickel and it is further covered by a film of chromate, and then a transparent or colored paint is further coated on the surface. CONSTITUTION:A double-layered nickel layer of approx. 7.5mum in thickness is formed by electroplating a wheel made of steel by nickel, and then a film of colored chromate of approx. 200Angstrom in thickness is formed. A transparent and colorless urethane resin paint is coated to the internal and external circumferential surfaces of this wheel into a thickness of approx. 15-20mum. In this case, if a colorless chromate film is formed, a colored paint is to be applied. The ground nickel layer and the colored chromate film are seen in bright golden color through the transparent paint and a colored wheel which is excellent in durability can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a novel colored wheel for use in automobiles and motorcycles.

Conventionally, steel wheels used for automobiles and motorcycles (hereinafter simply referred to as "vehicles") are prone to cracking, so in order to increase their corrosion resistance, they are coated with either a single layer or multiple layers of nickel by electroplating on the surface. 1111.1 is formed, and furthermore, when the top layer is exposed to wind and rain and comes into contact with dust, dust, etc., the nickel underlayer is On top of that, a single or multiple layer of chromium is formed. This nickel and chrome laminate is 21. It has already been proven that the car 4'+i0 is extremely durable.

In recent years, everything has become more colorful and individualized.The car industry has also been affected by this trend, with aluminum cars now being colored with aluminite, and steel cars being fitted with aluminium. Add coating 11 to the device and add J'L1.
These cars 'H1 and iD have appeared. Particularly in the case of motorcycles aimed at young people, the demand for decorative decorations is gradually increasing. However, even when paint is applied, the adhesion of the paint is poor, and when used under harsh conditions such as on wheels, the paint peels off and the product loses its commercial value.

The present invention aims to provide a colored wheel for important use, which is increasingly in demand, by solving the problem described in item 1 above.

The present invention involves forming a nickel layer of a required thickness by electroplating as in the past, or forming an overlapping layer of nickel and chromium, and then applying a colorless or colored chromate coating to the steel. The above layer is coated, and if the chromate film is a colorless chromate film, a transparent colored paint and a colorless paint film 4 are applied in double coats, and if the chromate film is a colored chromate film, a transparent colorless paint 4 is applied. It is equipped with military colored wheels coated with paint Fl.

- The chromate film adheres very well to the two metals and the chromium, and furthermore, the corrosion of both metals.
On the other hand, it is possible to improve the heat resistance and impact resistance of the color, but on the other hand, it is weak in the air, has poor abrasion resistance, and also decomposes due to dehydration reaction at around 200"C. Because of its characteristic of chromate coating, it has not been used at all to break the electroplated nickel layer or chromium layer of wheels. However, the inventor has developed a coating that has good adhesion to the chromate coating. 1 on top of the chromate film [By applying this, the above-mentioned drawbacks of the chromate film are compensated for, and the applied paint is assumed to be a nickel layer or chromium that is strongly electroplated beyond the area where It was discovered that the material adhered to the layer.

In addition, as a paint that has good adhesion to the chromate film, the main component of the chromate film is hydrated acid f hyflom, and a large number of oh
This urethane resin has the property of forming hydrogen bonds with the OH groups.

Evokiss 9 fingers, acrylic (1 fat, etc.) ← T's and all types are good.

A first embodiment of the invention will now be described.・j(1゛steel U(
After shaping it into Lλ shape, the opening was welded and nickel-plated using the conventional method, followed by 1 hour of acid and nickel electroplating.
Approximately 7.5 thick! Two nickel layers are formed. Next, perform 8-method chromate treatment to give a thickness of approximately 20 g.
Cover the nickel layer with a colored chromate film of No. 07-.

Next, apply a transparent colorless urethane resin □ coating 1 to a thickness of about 1 on the surface of the chromate film, mainly on the inner peripheral surface and side surfaces of the wheel.
Apply 5 to 20 microns using an appropriate method and dispose of colored wheels.

The colored wheel is coated with a transparent paint and has a very thin chromate film, giving it a golden-yellow appearance due to the colored nature of the nickel layer and the chromate film, making it an extremely decorative colored wheel.

As shown in the test results described below, this colored wheel has a paint film that adheres tightly to the wheel to a degree of T, and the paint film does not peel off even when used under severe conditions.

A second embodiment of the invention will now be described. [No.] A wheel made in the same manner as in Example 1 was heated and then heated with acid.

A two-layer nickel layer having a thickness of approximately 7.57 mm is formed by nickel electrolysis according to a conventional method. Next, after washing with water, chromium electroplating is performed according to the fTζ method to form a chromium layer with a thickness of about 0.2 tt on the nickel underlayer. Next, chromate treatment is performed using a conventional method to coat the overlapping layers of nickel and chromium with a chromate film approximately 20 OA thick, mainly on the surface of the chromate film near the inner peripheral surface and side surfaces of the wheel.
Apply transparent urethane resin paint of appropriate color to a thickness of approximately 1.
Apply 5/l using an appropriate method, and then apply a transparent, abrasive urethane resin paint to a thickness of approx. Due to the extremely thin film, the chromium layer that serves as the base layer, and the colored nature of the paint, the color given appears to shine, making it highly decorative.

This colored wheel is shown in the test results described below. The paint film adheres extremely tightly to the wheels, and even when used under harsh conditions, the paint film does not adhere to the wheels.

Samples without chromate film in the first and second examples
41 (wheel coated with transparent urethane resin layer 1 [approx. 15 to 20μ of 11 on top of two 75/l thick Nokel layers) and sample 2 (7.5/l thick, # A wheel made of two nickel layers, a chrome layer with a thickness of i%'EI O,2It, and a transparent colored and colorless urethane resin paint coated on top of that with a thickness of about 1.5 tt respectively); Tables 1 to 3 do not show comparison tests of the colored wheels of Examples 1 and 2 with Trial Sample 43 and Sample 1.

Table 1. Paint film adhesion test notes Sample 1.2: 0 indicates peeling; Sample 3.4: 0 indicates complete adhesion without peeling Table 2. Impact test method for coating film: DuPont method, weight: 3.00 y, height: 20 c1n Table 3. Corrosion resistance test of paint film Note: Salt spray test is based on JiS Z 2371 cattle test.
rjs H6617 From the results shown in Table 1, it has been proven that the coating film of the colored wheel according to the present invention has extremely strong adhesion. Tables 2 and 3 also show that the adhesive strength of the coating film of the colored wheel according to the present invention is very high.

Since the present invention has the above-mentioned configuration, it has a final effect.

A colored wheel with an extremely high f1+ paint film adhesion could be obtained by skillfully combining several conventional construction methods, so it could be provided at a relatively low cost.

(2) The combination of the lower plating layer and the colored nature of the chromate film and the colored nature of the transparent coating has created a mansion-like color tone, so the product 1 + Ii value is increased and sold. Contribute to expansion.

+311 [! Since the color can be changed to suit one's preference with relative ease, the product responds quickly to customer requests and contributes to the expansion of sales channels.

Patent Applicant Takasago Seisakusho Co., Ltd. (Voluntary) Proceedings December 17, 1939 Director General of the Patent Office 1. Case No. 132794 2. Title of invention Automobiles and Automobiles Relationship between the two-wheeled vehicle wheel 3 and the person making the amendment f'l Patent applicant address: 3-20-1-4, Touya, Kusatsu City, Shiga Prefecture, Agent 5, Date of notification of reasons for refusal: Showa Year, Month, Day (Delivery date, Month/Date, 1939) 6. Subject of amendment Detailed explanation of the invention column 7 of the specification, Contents of the amendment Contents of the amendment as shown in the attached sheet (1) Detailed explanation of the invention column (a) Description page 5, line 10, f-]-bokis”,
Corrected to "epoxy".

) In the third line of page 10 of the same page, [quick response J] is corrected to [-quick response J.

Claims (1)

[Claims] 1) Nickel plated on the surface of a steel wheel by electroplating.
Or, after forming a multi-layer coating and further performing chromate treatment to cover the layer with a chromate film, a transparent, colorless or colored coating is applied to the surface of the chromate film mainly on the inner peripheral surface and side surface of the wheel. Colored wheels for automobiles and motorcycles, which are coated with any suitable paint alone or in combination. 2) It is characterized in that two layers of nickel are formed on the surface of a steel wheel by electroplating, and then this layer is coated with a chromate film of the same color, and then a transparent colorless paint is applied to the surface of the chromate film. A colored wheel according to claim 1. 8] A single layer or multiple layers of chromium is formed on the base layer of either a single layer or multiple layers of nickel by electroplating on the surface of a steel motorcycle, and then chromate treatment is performed to form the overlapping layer. An automobile comprising: coated with a chromate film, and then any suitable transparent, colorless or colored paint applied singly or in combination to the surface of the chromate film, mainly on the inner peripheral surface and side surfaces of the wheels. and colored wheels for motorcycles. 4) After forming two layers of nickel and a single layer of chromium □ on the surface of a steel wheel by electroplating, and then coating the overlapping layers with a colorless chromate film, a transparent colored chromate film is applied to the surface of the chromate film. The colored wheel according to claim 3, characterized in that a transparent colorless paint is applied using a paint as a base.