Production of water transmission parts and fittings using aluminum with hard-anodized alumina / zirconia composite coating and corrosion-resistant and antibacterial Zno-Ag nanostructure coating

Abstract

Currently, brass alloy is the most common material used in water transmission parts and fittings. Brass alloys used with nickel coating on its surface are converted into the final product. However, the use of aluminum parts and fittings, in addition to low specific gravity, has useful capabilities such as relatively good corrosion resistance and no limitations in the supply of resources and mines for the production of metal in raw form. If aluminum is also coated with nanostructured oxide coatings, its corrosion resistance, wear resistance, and surface hardness increase significantly, so that brass is no match for it. After solving the problem of corrosion resistance and wear resistance of aluminum alloys, these are the only advantages of aluminum that appear, including low density, high strength-to-weight ratio, lower price, biocompatibility, greater recyclability, and so on. The purpose of this invention is to produce aluminum parts and water fittings with an alumina / zirconia composite coating and a nanostructure coating consisting of ZnO-Ag in order to reduce the price compared to brass alloy, increase corrosion resistance, wear and durability, and most importantly, increase the health of these parts.

Description

Description of the invention Title of the invention Production of water transfer parts and fittings using aluminum with hard-anodized alumina / zirconia composite coating and corrosion-resistant and antibacterial Zno-Ag nanostructure coating Production of water transmission fittings & parts and connections using aluminum with hardened alumina / zirconia composite coating and Zno-Ag nano structure coating, resistant to corrosion and antibacterial. Technical background of the relevant invention Section A: Human Needs Subsection: Health and Hygiene, Section C: Chemistry-Metallurgy Subsection: Chemistry Sub-sector: Metallurgy Section F: Mechanical Engineering Subsection: Engineering in its general sense Technical problem and stating the objectives of the invention Currently, brass alloy is the most common material used in water transmission parts and fittings. Brass alloys used with nickel coating on its surface become the final product. Brass is an alloy of copper and zinc that usually also contains tin and arsenic. Arsenic is a very toxic element for the human body, especially when it is introduced into drinking water. In addition, the use of nickel as one of the carcinogenic elements is extremely harmful. Also, the high density of brass increases the weight and, as a result, the high cost of raw materials for making parts and fittings. However, the use of aluminum parts and fittings, in addition to its low specific gravity, has useful capabilities such as relatively good corrosion resistance and no limitation in the supply of resources and mines for the production of metal in raw form. If aluminum is also covered with nanostructured oxide coatings, its corrosion resistance, wear resistance and surface hardness increase significantly, so that brass is not considered a competitor for it.After solving the problem of corrosion and wear resistance of aluminum alloys, these are the only advantages of aluminum that appear, including low density, high strength-to-weight ratio, lower price, biocompatibility, greater recyclability, etc. The purpose of this invention is to produce aluminum water components and fittings with alumina / zirconia composite coating and nanostructure coating consisting of ZnO-Ag in order to reduce the price, increase corrosion resistance, wear and durability, and most importantly, increase the health of these components. A description of the state of the prior art and the history of developments related to the claimed invention. As stated, currently the main material used in water transmission fittings is MS58 brass alloy, which is produced and supplied with nickel plating and has problems such as low wear resistance, unhygienic, high density, low strength-to-weight ratio and high price. On the other hand, a search in intellectual property databases found similar cases as follows: Title of the invention: Manufacturing of nickel-aluminum composite powder by mechanical alloying process for use in flame spraying, plasma spraying and high velocity flame spraying (HVOF) processes Registration number: 42635 Title of the invention: Heat treatment process for aging non-simple parts made of high-strength aluminum alloys using a hot water-polymer environment to eliminate distortion while maintaining mechanical properties. Registration number: 87071 Title of the invention: Synthesis of nanostructured composite powder with a weight percentage of 80% aluminum and 20% alumina using mechanical alloying method Registration number: 38501 Title of the invention: Production of fiber-metal layered composites (FMLs) consisting of 2024 aluminum sheet and epoxy resin reinforced with carbon / aramid hybrid fabric by manual layering method Registration number: 84073 Title of the invention: Changing the cross-section of all aluminum to optimize the coil manufacturing industry with the ability to increase the amperage and mechanical strength of the coil Patent number: 39333 Title of the invention: Water-splitting collectors using aluminum alloys with oxide nanostructure coating Patent number: 91179 Title of the invention: Manufacturing and improving the wear properties of aluminum-based nanocomposite with silica reinforcement for use in engine pistons Patent number: 97932 Title of the invention: Process for creating an antibacterial, self-cleaning, anti-wear supercoating on ceramic products Patent number: 102844 Title of the invention: Corrosion and abrasion resistant threaded pipe head for screw connection of pipes. Registration number: 27456 Title of the invention: Anti-wear surfaces of ceramic-metal composite alloy and its process Registration number: 92374 Title of the invention: Special nano-coating to prevent corrosion and abrasion Registration number: 74785 By examining the specifications of the aforementioned inventions, the differences with the present invention are as follows: -In the present design, it is claimed that in order to prevent corrosion and increase the resistance of aluminum, a coating has been created on it using the hard-anodized alumina / zirconia composite process. This process has been created for the first time, and there is no similarity in the aforementioned cases and even in the searches conducted. -In the present design, it is claimed that the nano-structure of Zno-Ag has been used in the form of a powder coating on the product to create antibacterial properties. This process has been created for the first time, and there is no similarity in the aforementioned cases and even in the searches carried out. Providing a solution to an existing technical problem along with an accurate, sufficient, and integrated description of the invention In this design, to produce this product, parts and fittings are first cast or extruded from aluminum ingots, then machined, and after this stage, the parts enter the hard anodized stage. Hard anodizing is performed on aluminum surfaces in several steps. These steps are as follows: In the first step, the surface of the part is cleaned using alkaline materials and other solvents, removing all grease and dirt. In the next step, the surface of the work is exfoliated using a soda solution, which is also called etching. The result of this step is a piece with a matte surface. The next step is the main hard anodizing step. In this step, a direct current of electricity is passed through the electrolyte liquid (consisting of sulfuric acid). In this operation, aluminum acts as the anode and another metal, which can be titanium, lead or steel, acts as the cathode. In this step, a layer of oxide is formed on the surface of the metal. The important point in this part is the addition of nano zirconia to the electrolyte liquid. In this step, at the end of the hard anodizing process, a composite consisting of alumina and zirconia is created on the parts and connections. And in the final stage, sealing and sealing are performed. The pores of the porous layer are hydrated and filled to create a smooth and polished surface. After the hard anodizing process, a polymer coating with a nano-structure of Zno-Ag is sprayed onto the surfaces and subjected to a kiln firing process. Finally, the part can be used as a water transfer connection with high corrosion resistance, longevity, and antibacterial properties. Explanation of shapes, maps and diagrams Processing of alumina composites, toughened with zirconia A clear and precise statement of the advantages of the claimed invention over prior inventions. 1-Light weight 2- High strength 3- Surface hardness and hardness 4-Corrosion resistance 5-Chemical stability 6-Abrasion resistance 7- Hygienic and biocompatible coating 8-Heat resistant 9- Very high adhesion of the coating to the aluminum substrate 10-High durability and resistance of the coating against UV rays 11- Neutrality of coverage and lack of reactivity 12- Reasonable price Description of at least one implementation method for implementing the invention In this invention, grade 6000 aluminum was used and after casting or extruding and turning the alloy, the desired part is ready for coating. Considering the choice of a specific alloy, extrusion and turning can be done completely industrially. For example, in this stage, a tube of this alloy was prepared and turning and finishing was done on the desired part. Then, after degreasing and performing the initial steps for coating, the desired part was placed in a plating bath and by applying a current of about 80 microns, a composite nanostructure coating was created on the aluminum. Considering the low cost of manufacturing this part and its many advantages over brass products in the market Explicit mention of the industrial application of the invention The justification for examining the three essential principles of an invention is as follows: -First paragraph (Newness and novelty in the world) As mentioned in the description, for the first time, aluminum / zirconia composite has been used for aluminum for water transmission connections. On the other hand, to create antibacterial properties, a Zno-Ag nanostructure polymer coating has been added. -Second paragraph (the matter is not obvious to a person of ordinary skill) Regarding the issue of the design being simple and understandable for people with ordinary skills, as explained earlier, aluminum alone cannot be used in this design, so during a process that increases oxidation on aluminum, we create an oxide layer called alumina. During the process, by adding zirconia, a final composite layer consisting of alumina and zirconia is created, which increases the efficiency of the product. - Third clause (usable in industry in a broad sense) This invention is used as a widely used product in the construction industry, agriculture, and any field that requires the use of water connections.

Claims

Claim What is claimed: Claim 1) The production of water transmission parts and fittings using aluminum with hardanodized alumina / zirconia coating and Zno-Ag nanostructure coating is a design with the aim of producing these products with high corrosion resistance and antibacterial properties. Claim 2) In accordance with claim number 1, to create a corrosion-resistant composite coating on aluminum parts during the hard anodizing process, nano zirconia oxide with a purity of 99 percent and dimensions of 30 to 50 nanometers is added to the electrolyte solution. Claim 3) In accordance with claim 1, to create an antibacterial coating, a ZnO-Ag nanostructure is added to the polyester resin that is added to the parts after the hard anodizing process. Claim 4) In accordance with claims 2 and 3, this process can be applied to all parts and connections that are used in the field of water revolution.

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