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High-nitrogen nickel-free antibacterial stainless steel watch case and manufacturing method thereof

A technology of antibacterial stainless steel and high-nitrogen stainless steel, which is applied in clocks and watches, metal processing equipment, electronic timers, etc., can solve the problems of watch cases containing nickel, low hardness, and easy wear, and achieve the goal of improving quality, increasing hardness, and reducing costs Effect

Inactive Publication Date: 2016-09-07
依波精品(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a high-nitrogen nickel-free antibacterial stainless steel watch case and its preparation method, aiming to solve the problems of the existing watch case containing nickel, low hardness and easy wear

Method used

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Embodiment Construction

[0025] The present invention provides a high-nitrogen nickel-free antibacterial stainless steel watch case and a preparation method thereof. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] The invention provides a method for preparing a high-nitrogen nickel-free antibacterial stainless steel case, which comprises the steps of:

[0027] A. Weigh the raw materials containing Ag according to a certain proportion, then mix them evenly, place them in a ball mill after mixing, and carry out high-energy ball milling under flowing nitrogen for 46-50 hours to obtain high-nitrogen stainless steel powder;

[0028] The specific step A is to select chromium powder, molybdenum powder, manganese powder, iron pow...

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Abstract

The invention discloses a high-nitrogen nickel-free antibacterial stainless steel watch case and a manufacturing method thereof. According to the high-nitrogen nickel-free antibacterial stainless steel watch case disclosed by the invention, Ag is combined with high nitrogen, so the antibacterial effect of Ag can be played, and the hardness and wear resistance of the watch case can be improved as well, therefore the high-nitrogen nickel-free antibacterial stainless steel watch case has a huge market value. According to the watch case disclosed by the invention, nickel element in the watch case is removed, the requirements of European Union ROSH environmental protection certification are fully carried out, so harms caused by nickel allergy are reduced to zero; moreover, the safety of the watch case is improved, and a quite good foundation is laid for China-made watch cases to break into and occupy international markets. Besides, according to the high-nitrogen nickel-free antibacterial stainless steel watch case disclosed by the invention, the mechanical properties of stainless steel are improved, good toughness and plasticity of the stainless steel are maintained; the strength of the stainless steel can be further improved; the yield strength can be higher than 2Gpa; the wear resistance of the stainless steel watch case is improved as well.

Description

technical field [0001] The invention relates to the field of watch cases, in particular to a high-nitrogen nickel-free antibacterial stainless steel watch case and a preparation method thereof. Background technique [0002] In recent years, the price of nickel has risen, and the price of austenitic stainless steel has continued to increase. Cost reduction has become a way for enterprises to survive and develop. Nickel ion is a potential sensitizing factor, which can induce toxic effects, cell destruction and inflammation in the vicinity of biological implants, and has teratogenic and carcinogenic hazards to living organisms. The survey shows that: 10%-20% Women and 2% of men are affected by nickel ions. Therefore, it is the development trend of the watch industry to use nitrogen instead of nickel to develop high-performance nickel-free stainless steel. [0003] Existing case materials are generally made of 304L and 316L stainless steel, but due to their poor hardness, corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/22B22F1/00C22C38/38C22C38/22C22C38/02G04G17/08
CPCG04G17/08C22C38/004C22C38/007C22C38/02C22C38/22C22C38/38B22F3/225B22F2998/10B22F1/103B22F1/108B22F2003/248B22F3/1021B22F2009/043
Inventor 杨丽李达钟飞邬治平付伟猛
Owner 依波精品(深圳)有限公司
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