Silver product and method of manufacturing silver product

一种制造方法、银制品的技术，应用在制造工具、磨削机床的部件、表面抛光的机床等方向，能够解决加工性差等问题，达到平滑度高、抑制金属过敏的产生、保持外观性的效果

Active Publication Date: 2021-01-01
MISTY COLLECTION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, pure silver and SV999 have insufficient Vickers hardness (hereinafter, sometimes abbreviated as HV) and mechanical strength as products, and not only have poor processability, but also have the problem of being difficult to maintain their shape for a long time.

Method used

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  • Silver product and method of manufacturing silver product
  • Silver product and method of manufacturing silver product
  • Silver product and method of manufacturing silver product

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0054] The first embodiment is a silver product, which is characterized in that it is a silver product formed of pure silver or a silver alloy having a purity of 99.9% by weight or more, the Vickers hardness of the silver product is 60HV or more, and as figure 1 As shown in (a) to (b), the height of the peak (S1) of 2θ=38°±0.2° in the X-ray diffraction pattern obtained by XRD analysis of the silver product is h1, and 2θ=44°± When the height of the peak (S2) at 0.4° is set to h2, such as figure 2 As shown, the value of h2 / h1 is 0.2 or more.

[0055] should be explained, figure 1 (a) is based on the X-ray diffraction pattern obtained by XRD analysis of Example 1, figure 1 (b) shows an X-ray diffraction pattern obtained by XRD analysis based on Comparative Example 1.

[0056] in addition, figure 2 It is a graph showing the relationship between the Vickers hardness (initial value) of a silver product and the ratio (h2 / h1) of the height (h1, h2) of a predetermined peak in an ...

no. 2 Embodiment approach

[0167] The 2nd embodiment is a kind of manufacturing method of silver product, it is characterized in that, the manufacturing method of the silver product that is formed by pure silver or the silver alloy that has 99.9% by weight or more purity, comprises following steps (1)~(2 ).

[0168] (1) The process of preparing a silver product of a prescribed shape

[0169] (2) Use a magnetic cylinder to carry out surface treatment on a silver product of a specified shape to make it work-hardened, so that the Vickers hardness of the silver product of the specified shape is 60HV or more, and the X-ray obtained by XRD analysis of the silver product of the specified shape In the ray diffraction diagram, when h1 is the peak height of 2θ=38°±0.2° and h2 is the peak height of 2θ=44°±0.4°, the value of h2 / h1 is 0.2 or more.

[0170] 1. Preparation process of silver products of specified shape

[0171] It is a process of preparing pure silver or a silver alloy having a purity of 99.9% by wei...

Embodiment 1

[0225] 1. Preparation process of silver products of specified shape

[0226] Silver having a purity of 100% by weight was prepared, and vacuum-deposited on a tempered glass substrate with a thickness of 0.5 mm using a metal vapor deposition apparatus to form a silver thin film with a thickness of 1 μm.

[0227] 2. Cartridge handling

[0228] use Figure 8 A magnetic cylinder apparatus, Pritic M (Puraioriti Co., Ltd.) shown in outline, performs cylinder processing on a silver thin film on a prepared strengthened glass substrate.

[0229] That is, 1000 g of water, 100 g of a silver product of a predetermined shape, 100 g of a magnetic material made of a spherical SUS (SUS304) with a diameter of 1 mm, and 1 g of a gloss agent were thrown into the stirring layer inside the tube device.

[0230] Next, the cartridge device was driven, and for the cartridge treatment, the cartridge treatment was performed for 10 minutes while rotating the stirred layer in the horizontal direction / v...

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Abstract

Provided are a silver product which has high hardness (HV), rarely undergoes metal corrosion, rarely undergoes discoloration, and is produced by using pure silver and an ultra-high purity silver alloy, and a method for producing the silver product. The silver product is characterized by being composed of pure silver or a silver alloy having a purity of 99.9 wt% or more and has a Vickers hardness of 60 HV or more, and the value of h2 / h1 is 0.2 or more, where h1 is the height of a peak having a 2 [theta] of 38 degrees minus or plus 0.2 degrees in an X-ray diffraction pattern obtained by XRD analysis of the silver product, and h2 is the height of a peak having a 2 [theta] of 44 degrees minus or plus 0.4 degrees.

Description

technical field [0001] The present invention relates to a silver article and a method for manufacturing the silver article. [0002] In particular, it relates to a silver product having high hardness and less occurrence of metal allergy, metal corrosion, discoloration, etc. despite using pure silver and a silver alloy having a purity of 99.9% by weight or more, and a method for producing the same. Background technique [0003] Conventionally, for silver products such as silver tableware, SV925, which is a silver alloy having a purity of about 92.5%, has been mainly used. [0004] From the viewpoint of imparting high hardness, this SV925 contains a predetermined amount of copper and the like as other metal components, so it becomes the cause of metal allergy, metal corrosion, and discoloration when silver products such as silver tableware come into direct contact with the skin. [0005] Therefore, for the purpose of reducing the occurrence of metal corrosion, etc., a silver ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B44C1/18A44C27/00B23P9/00
CPCB44C1/18B23P9/00C22F1/14C22C5/06B24B31/02A44C27/003A44C27/002B24B49/006
Inventor 宗形正美宗形幸太郎
Owner MISTY COLLECTION CO LTD
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