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A kind of environmental protection faucet and preparation method thereof

A leading and environmentally friendly technology, applied in mechanical equipment, ion implantation plating, gaseous chemical plating, etc., can solve the problems of difficulty in lead-free copper extraction, increase in product cost, and environmental pollution, and reduce replacement and maintenance costs. The effect of high quality, no waste water and waste gas discharge

Inactive Publication Date: 2016-09-07
GUANGDONG YINENG NANO SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of producing faucets with this copper alloy material are: on the one hand, it is difficult to refine the lead-free copper, and the cost is high, resulting in a substantial increase in product cost; Oxidation, green copper oxide is easy to form on the surface of the faucet, affecting water quality
In the prior art, there is also a chemical lead washing process to wash off the lead on the surface of the faucet, but this can only wash off the lead on the surface of the faucet. This method only temporarily relieves the heavy metals from exceeding the standard, and the lead in the inner layer will remain as time goes by. It will precipitate to the surface, and lead washing is a kind of high-concentration acidification, polluting the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method for an environment-friendly golden copper faucet, comprising the following processing steps:

[0034] Step (1), the metal copper faucet is cast by gravity, and the metal faucet with high-gloss surface is obtained through physical polishing;

[0035] Step (2), performing physical vapor deposition of nitride, the nitride is titanium nitride, so that a nitride protective film is formed on the outer surface of the metal faucet, and the thickness of the nitride protective film is 0.2 μm;

[0036] Step (3), performing chemical vapor deposition of parylene to form an organic film on the inner and outer surfaces of the metal faucet, and the thickness of the organic film is 10 μm.

[0037] Among them, the specific processing method of the step (2) is to put the polished metal faucet into a vacuum coating machine for physical vapor deposition: step A1, use plasma glow cleaning, argon gas 250 sccm, bias voltage 2500V, Time 6min; step A2, carry out cathodic ar...

Embodiment 2

[0041] A method for preparing an environment-friendly silver-white copper faucet, comprising the following processing steps:

[0042] Step (1), the metal copper faucet is cast by gravity, and the metal faucet with high-gloss surface is obtained through physical polishing;

[0043] Step (2), performing physical vapor deposition of nitride and zirconium nitride to form a nitride protective film on the outer surface of the metal faucet, and the thickness of the nitride protective film is 0.4 μm;

[0044] Step (3), performing chemical vapor deposition of octafluoroparylene to form an organic film on the inner and outer surfaces of the metal faucet, and the thickness of the organic film is 12 μm.

[0045] Among them, the specific processing method of the step (2) is to put the polished metal faucet into a vacuum coating machine for physical vapor deposition: step A1, use plasma glow cleaning, argon gas 280sccm, bias voltage 2800V, Time 5.5min; step A2, carry out cathodic arc ion dep...

Embodiment 3

[0049] A method for preparing an environment-friendly light golden copper faucet, comprising the following processing steps:

[0050] Step (1), the metal copper faucet is cast by gravity, and the metal faucet with high-gloss surface is obtained through physical polishing;

[0051] Step (2), perform physical vapor deposition of nitrides, the nitrides are titanium-zirconium nitride alloys, the mass ratio of titanium to zirconium in the titanium-zirconium nitride alloys is 1:1, so that a nitrided protective film is formed on the outer surface of the metal faucet, The thickness of the nitride protective film is 0.5 μm;

[0052] Step (3), performing chemical vapor deposition of parylene to form an organic film on the inner and outer surfaces of the metal faucet, and the thickness of the organic film is 15 μm.

[0053] Wherein, the specific processing method of the step (2) is to put the polished metal faucet into a vacuum coating machine for physical vapor deposition: step A1, use...

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Abstract

The present invention relates to the fields of manufacturing and surface treatment, in particular to an environmentally friendly faucet without precipitation of heavy metals and its preparation method, including the following processing steps: step (1), casting a metal faucet by gravity, and obtaining a metal faucet with a high-gloss surface by physical polishing Step (2), carrying out physical vapor deposition of nitride, so that the outer surface of the metal faucet forms a nitride protective film; step (3), carrying out chemical vapor deposition of parylene or parylene halides, so that the metal faucet An organic film is formed on the inner and outer surfaces. The metal faucet is cast by gravity, the high-gloss surface is obtained by physical polishing, physical vapor deposition is carried out, and then chemical vapor deposition is carried out. Using the good permeability of chemical vapor deposition, an organic film is deposited on the inner and outer surfaces of the faucet. This layer of organic film It plays the role of isolation and shielding, so that water and metal do not contact, thereby obtaining a metal faucet without precipitation of heavy metals. The preparation method of the invention is simple and the production cost is low.

Description

technical field [0001] The invention relates to the fields of manufacturing and surface treatment, in particular to an environment-friendly faucet without heavy metal precipitation and a preparation method thereof. Background technique [0002] The material of the existing metal faucet is mainly copper, which is generally formed by gravity casting, and then the finished product is prepared by a water electroplating process. The metal faucet produced in this way, its metal surface is in direct contact with water, and heavy metals in the faucet material and electroplating layer, such as lead, chromium and nickel, will slowly precipitate into the water, polluting the water quality, and the precipitation of heavy metals will cause serious harm to the human body. Environmental leaders have always been a research hotspot in the industry. [0003] Chinese patent application number is 200610005689.2 invention patent, discloses a kind of lead-free copper alloy, and its copper alloy ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C28/00C23C14/34C23C14/06C23C16/44F16K27/00
CPCC23C14/0641C23C14/34C23C16/44C23C28/00F16K27/00
Inventor 肖桥兵邓洪
Owner GUANGDONG YINENG NANO SCI & TECH
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