TW202003232A - Housing and method for making same - Google Patents

Abstract

A housing includes a substrate and a coating formed on a surface of the substrate. The substrate is titanium or titanium alloy. A plurality of nano-holes are formed on the surface of the substrate. The nano-holes are completely filled with the coating, and the coating completely covers the surface of the substrate where the nano-holes are not formed. The disclosure further provides a method for making the housing.

Description

Shell and manufacturing method of shell

The invention relates to a shell and a manufacturing method of the shell.

The nano-ceramic paint film has the characteristics of high hardness. However, after applying it to the metal surface, it will be prone to chipping when performing CNC machining and other mechanical processing.

In view of this, there is a need for a housing with strong binding force.

The invention also provides a manufacturing method of the shell.

A shell includes a base material and a coating layer formed on the surface of the base material, the base material is titanium or a titanium alloy, a plurality of nano-holes are formed on the surface of the base material, and the nano-holes are coated by the The layer is completely filled, and the coating layer completely covers the surface of the substrate where the nanopores are not formed.

A method for manufacturing a shell includes the following steps:

Provide a substrate, the substrate is titanium or titanium alloy;

Performing surface treatment on the substrate to form a plurality of nanopores on the surface of the substrate;

Spraying the surface of the substrate on which nanopores are formed to form a coating, wherein the nanopores are completely filled by the coating, and the coating completely covers the surface of the substrate on which the nanopores are not formed .

In summary, the shell improves the bonding force between the substrate and the coating layer by forming nanopores on the surface of the substrate. Wherein, the nano-holes are roughly honeycomb-shaped. The nanopores are completely filled with the coating to form an anchor effect, thereby improving the bonding force between the coating and the substrate. At the same time, the operation of this case is simple, and the ceramic coating used is water-based coating, which is more environmentally friendly. In addition, the preparation of the casing does not need to be carried out under a high-temperature environment, and the safety performance of the operation is improved.

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons with ordinary knowledge in the technical field without making creative work fall within the protection scope of the present invention.

It should be noted that when a component is said to be "fixed" to another component, it can be directly on another component or it can also exist in a centered component. When a component is considered to be "connected" to another component, it can be directly connected to another component or there can be centered components at the same time. When a component is considered to be "set on" another component, it may be set directly on another component or there may be a centered component at the same time.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terminology used in the description of the present invention herein is for the purpose of describing specific embodiments, and is not intended to limit the present invention.

Referring to FIG. 1, a preferred embodiment of the present invention provides a housing 10. The casing 10 may be a casing of an electronic device such as a mobile phone, a tablet computer, a casing of a mechanical device, or a car decoration.

The casing 10 includes a base material 101 and a coating layer 103.

The material of the substrate 101 is titanium or titanium alloy. The titanium alloy may be TAD, TA0, TA1, TA2, TA3, TA4, TA5, TA6, TA7, TA9, TA10, TB2, TB3, TB4, TC1, TC2, TC3, TC4, TC6, TC9, TC10, TC11 or TC12.

In this embodiment, a plurality of nano-holes 1011 are formed on the surface of the substrate 101. The nanopore 1011 is an irregular cavity with a pore diameter of tens to hundreds of nanometers. Specifically, the nanopore 1011 is substantially honeycomb-shaped.

Please refer to FIG. 2 together. The nano-holes 1011 are accompanied by a number of irregular protrusions 1012. Of course, the protrusion 1012 is not limited to be formed beside the nano-hole 1011, but may be formed in the nano-hole 1011 or any part of the substrate 101. Wherein, the protrusion 1012 belongs to a part of the base material 101.

In this embodiment, the nano-holes 1011 are formed by surface-treating the substrate 101. For example: The substrate 101 is placed in a pickling solution, the pickling at 15-95 ^o C 2-30 minutes to form a plurality of nanopores surface of the substrate 1011 to 101. In this embodiment, the ratio of the pickling solution is: 1-8% organic acid, 1-15% inorganic acid, 0.1-3% additive, 0.5-4% hydrogen peroxide and 83- 97% pure water. Wherein, the organic acid is one or more of acetic acid, formic acid and oxalic acid. The inorganic acid is one or more of hydrofluoric acid, sulfamic acid, and nitric acid. The additive is one or more of potassium fluoride, sodium fluoride, magnesium fluoride, and copper sulfate.

The coating layer 103 is formed on the surface of the substrate 101 having nanopores 1011. Wherein, the surface of the substrate 101 includes the surface of the nanopore 1011. In this embodiment, the coating 103 is a nano-ceramic coating.

Specifically, the surface of the substrate 101 on which the nano-holes 1011 are formed is sprayed with an aqueous nano-ceramic coating, so that the nano-holes 1011 are completely filled with the aqueous nano-ceramic coating, and the aqueous nano-ceramic coating is completely covered The coating layer 103 is formed on the surface of the substrate 101 where the nano-holes 1011 are not formed. Wherein, the water-based nano-ceramic paint enters the nano-hole 1011 to form an anchor effect, thereby improving the bonding force between the coating 103 and the substrate 101.

The invention also provides a manufacturing method of the housing 10, which includes the following steps:

Provide a substrate 101. The material of the substrate 101 is titanium or titanium alloy. The titanium alloy may be TAD, TA0, TA1, TA2, TA3, TA4, TA5, TA6, TA7, TA9, TA10, TB2, TB3, TB4, TC1, TC2, TC3, TC4, TC6, TC9, TC10, TC11 or TC12.

Cleaning substrate 101. In this embodiment, after degreasing the base material 101 with a degreasing agent, the base material 101 is washed with two pure waters to clean the dust and oil stains on the surface of the base material 101.

Configure pickling solution. In this embodiment, the ratio of the pickling solution is: 1-8% organic acid, 1-15% inorganic acid, 0.1-3% additive, 0.5-4% hydrogen peroxide and 83- 97% pure water. Wherein, the organic acid is one or more of acetic acid, formic acid and oxalic acid. The inorganic acid is one or more of hydrofluoric acid, sulfamic acid, and nitric acid. The additive is one or more of potassium fluoride, sodium fluoride, magnesium fluoride, and copper sulfate.

A surface treatment is performed on the cleaned substrate 101 to form a plurality of nanopores 1011 on the surface of the substrate 101. Specifically, the substrate 101 after washing into said pickling bath, pickling at 15-95 ^o C 2-30 minutes to form a plurality of nanopores surface of the substrate 1011 to 101. Wherein, the nano-hole 1011 is an irregular cavity with a diameter of tens to hundreds of nanometers. Specifically, the nanopore 1011 is substantially honeycomb-shaped.

Further, a number of irregular protrusions 1012 are accompanied by the nano-holes 1011. Of course, the protrusion 1012 is not limited to be formed beside the nano-hole 1011, but may be formed in the nano-hole 1011 or any part of the substrate 101. Wherein, the protrusion 1012 belongs to a part of the base material 101.

The surface-treated substrate 101 is washed with water. Specifically, the above-mentioned surface-treated substrate 101 is rinsed with two pure waters to remove the acid pickle on the surface.

The surface of the substrate 101 on which the nano-holes 1011 are formed is sprayed with a nano-ceramic paint to form a coating layer 103.

Specifically, using a nano-ceramic paint, an air spray gun is used to spray the surface of the substrate 101 formed with nano-holes 1011, so that the nano-holes 1011 are completely filled with the nano-ceramic paint, and the nano-ceramic paint is made It completely covers the surface of the substrate 101 where the nano-holes 1011 are not formed, thereby forming the coating layer 103. Wherein, the nano-ceramic paint enters the nano-hole 1011 to form an anchor effect, thereby improving the bonding force between the coating 103 and the substrate 101. In this embodiment, the nano-ceramic paint is a water-based nano-ceramic paint.

Further, it can be understood that, after washing with water, the substrate 101 or the correspondingly processed substrate 101 may be dried.

The present invention will be specifically described below by examples.

Example 1

The base material 101 used in this embodiment is a titanium alloy.

Cleaning the substrate 101: at 50 ^o C, use a degreasing and degreasing agent to degrease the substrate 101 for 1.5 minutes, and then wash the substrate 101 with two passes of pure water to clean the surface of the substrate 101 Dust and oil stains.

Configuration acid pickling solution: The ratio of the acid pickling solution is: 3.7% sulfamic acid, 1.2% formic acid, 0.9% potassium fluoride, 2.1% hydrogen peroxide and 92.1% pure water.

Perform surface treatment on the cleaned substrate 101: put the cleaned substrate 101 into the above-mentioned configured pickling solution, and pickle at room temperature for 19 minutes to form a surface on the substrate 101 A plurality of nano holes 1011 are formed. There are a number of irregular protrusions 1012 beside the nano-hole 1011 or within the nano-hole 1011.

Washing the surface-treated substrate 101 with water: washing the substrate 101 forming the nanopores 1011 with two pure water to remove the pickling solution on the surface of the substrate 101.

Spraying the substrate 101 after water washing: using a water-based nano-ceramic coating, the surface of the substrate 101 with the nano-holes 1011 formed is sprayed with an air spray gun, so that the nano-holes 1011 are treated by the water-based nano The ceramic paint is completely filled, and the water-based nano-ceramic paint completely covers the surface of the substrate 101 where the nano-holes 1011 are not formed, thereby forming a coating layer 103.

Test Results:

Hundred grid test: Adhesion test is performed on the surface of the coating 103 by using the hundred grid test. After testing, the coating 103 has no paint layer falling off, reaching ASTM grade 5B.

In summary, the housing 10 improves the bonding force between the substrate 101 and the coating layer 103 by forming nano-holes 1011 on the surface of the substrate 101. Wherein, the nano-hole 1011 is substantially honeycomb-shaped. The nano-hole 1011 is completely filled with the nano-ceramic paint to form an anchor effect, thereby improving the bonding force between the coating 103 and the substrate 101. At the same time, the operation of this case is simple, and the ceramic coating used is water-based coating, which is more environmentally friendly. In addition, the preparation of the housing 10 does not need to be performed in a high-temperature environment, and the safety performance of the operation is also improved.

The above embodiments are only used to illustrate the technical solutions of the present invention but not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those with ordinary knowledge in the technical field should understand that the technical solutions of the present invention can be modified or Equivalent replacement, without departing from the spirit and essence of the technical solution of the present invention.

10‧‧‧Housing 101‧‧‧ Base material 1011‧‧‧Nanopore 1012‧‧‧protrusion 103‧‧‧Coating

FIG. 1 is a schematic cross-sectional view of a housing according to a preferred embodiment of the present invention. FIG. 2 is a partial schematic diagram of the housing shown in FIG. 1.

no

10‧‧‧Housing

101‧‧‧ Base material

1011‧‧‧Nanopore

103‧‧‧Coating

Claims (10)

A shell includes a base material and a coating layer formed on the surface of the base material. The improvement is that the base material is titanium or a titanium alloy, and a plurality of nano-holes are formed on the surface of the base material. It is completely filled with the coating, and the coating completely covers the surface of the substrate where the nanopores are not formed. The casing as described in item 1 of the scope of the patent application, wherein the nanopores are irregular recesses with pore diameters of tens to hundreds of nanometers. The casing as described in item 1 or 2 of the patent application scope, wherein the nanopores are in a honeycomb shape, and there are a number of irregular protrusions beside or within the nanopores. The casing as described in item 1 of the patent application scope, wherein the titanium alloy may be TAD, TA0, TA1, TA2, TA3, TA4, TA5, TA6, TA7, TA9, TA10, TB2, TB3, TB4, TC1 TC2, TC3, TC4, TC6, TC9, TC10, TC11 or TC12. The casing as described in item 1 of the patent application scope, wherein the coating is a nano-ceramic coating. A method for manufacturing a housing, the improvement of which includes the following steps: providing a substrate, the substrate is titanium or a titanium alloy; performing surface treatment on the substrate to form a plurality of nanopores on the surface of the substrate ; Spraying the surface of the substrate on which the nano-holes are formed to form a coating, wherein the nano-holes are completely filled by the coating, and the coating completely covers the substrate on which the nano-holes are not formed surface. The method for manufacturing a casing as described in item 6 of the patent application scope, wherein the surface treatment of the substrate means the surface treatment of the substrate with an acid solution, wherein the preparation of the acid solution The ratio is: 1-8% organic acid, 1-15% inorganic acid, 0.1-3% additive, 0.5-4% hydrogen peroxide, and 83-97% pure water. The manufacturing method of the shell as described in item 7 of the patent application scope, wherein the organic acid is one or more of acetic acid, formic acid and oxalic acid, and the inorganic acid is one of hydrofluoric acid, sulfamic acid and nitric acid Or more, the additive is one or more of potassium fluoride, sodium fluoride, magnesium fluoride, and copper sulfate. The method for manufacturing a casing as described in item 6 of the patent application range, wherein the nano-holes are irregular recesses with a pore diameter of tens to hundreds of nanometers. According to the manufacturing method of the shell according to item 6 or 9 of the patent application scope, wherein the nanopores are in a honeycomb shape, and there are a number of irregular protrusions beside or in the nanopores.

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