Environment-friendly 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 difficult extraction of lead-free copper, increased product cost, environmental pollution, etc., to reduce replacement and maintenance costs, product The effect of high quality, no waste water and waste gas emissions

Inactive Publication Date: 2015-02-18
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 de...

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 invention relates to the field of manufacturing and surface treatment and particularly relates to an environment-friendly faucet and a preparation method thereof. The preparation method comprises the following steps: S(1) casting a metal faucet by gravity and physically polishing to obtain the metal faucet with highlight surface; S(2) carrying out physical vapor deposition on nitrides so as to form a nitrided protective film on the outer surface of the metal faucet; and S(3) carrying out chemical vapor deposition on poly-p-xylylene or halides of poly-p-xylylene so as to form organic films on the inner and outer surfaces of the metal faucet. The metal faucet is casted by gravity, the highlight surface is obtained by physical polishing, physical vapor deposition is carried out and then chemical vapor deposition is carried out, and the organic films are deposited on the inner and outer surfaces of the faucet by virtue of good permeability of chemical vapor deposition. The organic films have isolating and screening effects, so that water is not contacted with metals, and therefore, the metal faucet without separation of heavy metals is obtained. The environment-friendly faucet provided by the invention is simple in preparation method and low in production cost.

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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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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