Tableware and method for surface treatment thereof, substrate having hard decorative coating film and method for production thereof, and cutlery

A surface treatment and tableware technology, applied in the field of tableware surface treatment, can solve problems such as unhygienic, lost cutlery and tableware, troubles, etc.

Inactive Publication Date: 2002-11-20
CITIZEN WATCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is troublesome to wash this kind of cutlery together with other cutlery, and the surface of the cutlery will be worn due to mutual contact
[0017] Especially in places where a large number of cutlery is used, such as school kitchens and company canteens or restaurants, the work efficiency of cutlery cleaning is poor
[0018] In addition, the cutlery that sinks to the bottom of the washing basin will come into contact with the dirt deposited on the bottom, which is very unhygienic
[0019] In addition, there are various other problems, such as the possibility of losing cutlery when using it outdoors near the water, or accidentally dropping the cutlery to the bottom of the water

Method used

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  • Tableware and method for surface treatment thereof, substrate having hard decorative coating film and method for production thereof, and cutlery
  • Tableware and method for surface treatment thereof, substrate having hard decorative coating film and method for production thereof, and cutlery
  • Tableware and method for surface treatment thereof, substrate having hard decorative coating film and method for production thereof, and cutlery

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no. 1 approach

[0153] refer to figure 1 , figure 2 , image 3 with Figure 4 A first embodiment of the present invention is described.

[0154] Such as figure 2 As shown, a surface hardened layer 101 is formed on the surface of titanium or titanium alloy tableware (hereinafter referred to as "titanium tableware) 100. Surface hardened layer 101 extends to a depth of about 20 microns from the surface. Surface hardened layer 101 is divided into first hardened layer 102 and a second hardened layer 103, nitrogen 104 and oxygen 105 diffuse in the first hardened layer 102 to form a solid solution, and oxygen 105 in the second hardened layer 103 diffuses to form a solid solution. It is observed that the first hardened layer 102 extends from the surface To a depth of about 1 micron, there is a second hardened layer 103 in a region deeper than this depth. Nitrogen 104 and oxygen 105 diffuse in the first hardened layer 102 to form a hardened layer that is particularly high in hardness and has th...

no. 2 approach

[0241] A second embodiment of the present invention is described below.

[0242] The purpose and basic function of each step of the second embodiment are the same as those of the aforementioned first embodiment. The second embodiment differs from the first embodiment in that the heating step and the hardening step are performed under atmospheric pressure. The second embodiment is also different from the first embodiment in that when the heating step is carried out under atmospheric pressure, an inert gas is introduced into the vacuum chamber to prevent the titanium tableware from reacting with impurity components other than nitrogen and oxygen components, because the titanium tableware Made of active metal.

[0243] In the heating step of the second embodiment, it is preferable to evacuate the vacuum chamber, then pass an inert gas into the vacuum chamber to adjust the pressure to atmospheric pressure, and the heating is performed under atmospheric pressure. However, it is a...

no. 3 approach

[0278] Refer below Image 6 A third embodiment of the present invention is described.

[0279] Image 6 Shown is the structural representation of the titanium tableware that the present invention makes. In this embodiment, by the ion plating method (that is, the dry plating method for making the titanium tableware 200), on the surface hardened layer 101 of the titanium tableware 100 produced by the first or second embodiment, a layer containing nitrogen is formed. The TiN coating film 201 of titanium oxide is used as a golden yellow hard coating film.

[0280] A method of forming the TiN coating film 201 of titanium nitride as the golden yellow hard coating film in this embodiment mode will be described below.

[0281] First, the titanium tableware 100 produced in the first or second embodiment is washed with an organic solvent such as isopropanol, and the titanium tableware is placed in an ion plating device (not shown). The ion plating device is a commonly used device, s...

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Abstract

The tableware of the present invention comprises Ti or a Ti alloy, and has a surface hardened layer comprising a first hardened layer formed in a region from the surface to an arbitrary depth in which nitrogen and oxygen diffuse to form a solid solution, and a second hardened layer. The hardened layer is formed in any region deeper than the first hardened layer. The tableware surface treatment method of the present invention is to form a hardened surface layer. The base material with hard decorative coating of the present invention contains Ti or Ti alloy, and has an internal hardened layer comprising first and second hardened layers on its surface, wherein a hard decorative coated film is formed on the surface of the internal hardened layer. The cutlery of the present invention includes an operating portion and a handle having floating means such as a hollow portion. The invention can obtain the titanium tableware with good long-term scratch resistance and good appearance quality, and increase the decorative value of the tableware. A surface treatment method for obtaining titanium tableware with high productivity is also provided. The invention can provide a base material with a hard decorative coating film with good scratch resistance and high surface hardness and a production method thereof. Since the cutlery and tableware of the present invention can float in water, the cutlery and tableware are unlikely to touch each other. Therefore, the cutlery is not easy to scratch. Plus, the utensils are lightweight and easy to hold.

Description

technical field [0001] The present invention relates to tableware (cutting utensils and cutlery such as knives, forks and spoons) and methods for surface treatment of tableware. More specifically, the present invention relates to titanium or titanium alloy tableware, the surface of which has been hardened by surface treatment, and a surface treatment method for tableware. [0002] The invention also relates to a substrate with a hard decorative coating and a method for producing the substrate. Specifically, the present invention relates to substrates, such as camera bodies, mobile phone bodies, portable radio bodies, video camera bodies, lighter bodies, personal computer mainframes, etc., and more particularly relates to hard decorative coatings The base material and the production method of the base material specifically refer to a base material having an inner hardened layer formed on the surface thereof and a hard decorative coating film formed on the surface of the inner ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47G21/00B44C1/04B44C1/14B44C5/04B44F9/10C23C8/34C23C28/00
CPCA47G21/00B44C1/04B44C1/14B44C5/0415B44F9/10C23C8/28C23C8/34C23C8/80C23C28/324C23C28/325C23C28/34Y10T428/12576
Inventor 串田八郎福村丰宫行男
Owner CITIZEN WATCH CO LTD
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