Anticorrosion process for marine galvanized fastener

Abstract

The invention discloses an anti-corrosion process for a marine galvanized fastener, which is implemented by using a bolt, a screw, a nut, a gasket, a check ring, a rivet and a combined piece for the marine galvanized fastener, and comprises the following steps in sequence: preparing, mixing paint, filtering and standing, brushing the galvanized fastener and drying by air. Through the technical processes of paint mixing, filtering, standing, galvanized fastener brushing, air drying and the like, the corrosion resistance of the exposed galvanized fastener is better enhanced, and the use quality of the marine galvanized fastener is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of anti-corrosion technology, and in particular relates to an anti-corrosion technology method for marine galvanized fasteners. Background Art

[0002] Fasteners include bolts, screws, nuts, washers, retaining rings, rivets, assemblies and other types. The galvanizing requirements on their surfaces mainly play an anti-corrosion and decorative role. Fasteners are a large-volume and widely used basic component on marine equipment. Their product quality and reliability play an important role in equipment performance and structural safety. Marine equipment needs to face harsh environments such as salt spray, mold, high and low temperatures during operation, so higher requirements are placed on the surface corrosion resistance of fasteners.

[0003] The corrosion resistance of fasteners is determined by the thickness of the galvanized layer. Common galvanizing processes include electro-galvanizing, hot-dip galvanizing, sherardizing, mechanical galvanizing, etc. These mature processes have general technical specifications and standards, and there are special standard requirements for the thickness of the fastener coating.

[0004] Considering that the coating of the fasteners of marine equipment alone cannot meet the working environment of salt spray corrosion, fungal corrosion, etc. in the ocean, it is necessary to apply anti-corrosion varnish on the surface of the exposed galvanized fasteners to ensure the quality of the marine galvanized fasteners. Summary of the invention

[0005] In view of this, the present invention provides an anti-corrosion process method for marine galvanized fasteners to ensure high reliability of marine galvanized fasteners in working environments such as salt spray corrosion and fungal corrosion.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a process for anti-corrosion of marine galvanized fasteners, the implementation object is marine galvanized fasteners including bolts, screws, nuts, washers, retaining rings, rivets and assemblies, the steps are as follows: S1, preparation: select 1504 epoxy ester self-drying insulating varnish and xylene as a diluent, and clean the measuring cup to be used with anhydrous ethanol and clean water respectively; S2, paint mixing: put the self-drying insulating varnish in a measuring cup, add xylene diluent to dilute the self-drying insulating varnish for paint mixing, and use a viscometer to dynamically measure the viscosity of the paint during the paint mixing process to ensure that the working viscosity is between 12 and 18 seconds; S3, filter and let stand: Stir the prepared paint thoroughly with a glass rod, and filter it with a 200-mesh filter sieve until all bubbles in the solution escape before use; S4, galvanized fasteners brushing: Dip the prepared varnish with a brush and evenly apply protection to the exposed parts of the installed marine galvanized fasteners; S5, Self-drying: After the painted marine galvanized fasteners are allowed to self-dry for 24 hours, the anti-corrosion process is completed before the next installation operation can be carried out on the equipment.

[0007] Furthermore, when measuring the viscosity in step S2, the ambient temperature is ensured to be 25±5°C.

[0008] Furthermore, the step S3 is left to stand for no less than 20 minutes.

[0009] The beneficial effect of the present invention is that the present invention can better enhance the anti-corrosion performance of exposed galvanized fasteners through the process of paint mixing, filtering and standing, brushing galvanized fasteners, self-drying and the like, thereby ensuring the use quality of marine galvanized fasteners. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The present invention is a process flow chart of the anti-corrosion of marine galvanized fasteners. DETAILED DESCRIPTION

[0011] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0012] Before describing the embodiments of the present invention in detail, the application environment of the present invention is described first.

[0013] The technology of the present invention is mainly applied to the anti-corrosion process of marine galvanized fasteners. Experience shows that marine equipment needs to face harsh environments such as salt spray, mold, high and low temperatures during operation. Galvanized fasteners used for installation and fastening of marine equipment cannot meet the working conditions of salt spray corrosion, mold corrosion, etc. in the ocean by their own coating alone. Therefore, it is necessary to apply anti-corrosion varnish on the exposed surface of galvanized fasteners to ensure the quality of marine galvanized fasteners.

[0014] like Figure 1 The embodiment of the present invention discloses a corrosion protection process for marine galvanized fasteners, and the implementation object is marine galvanized fasteners including bolts, screws, nuts, washers, retaining rings, rivets and assemblies, and the steps are as follows: S1 preparation; S2 paint mixing; S3 filtering and standing; S4 galvanized fasteners brushing; S5 self-drying. The corrosion protection process for marine galvanized fasteners is described in detail through this embodiment as follows.

[0015] S1, preparation.

[0016] Select 1504 epoxy ester self-drying insulating varnish and xylene as a diluent, and clean the measuring cup to be used with anhydrous ethanol and clean water respectively.

[0017] S2, paint mixing.

[0018] Place the self-drying insulating varnish in a measuring cup, add xylene diluent to dilute the 1504 epoxy ester self-drying insulating varnish for paint mixing. During the paint mixing process, use a viscometer to dynamically measure the viscosity of the paint to ensure that the working viscosity is between 12 and 18 seconds. When measuring the viscosity, ensure that the ambient temperature is 25±5℃.

[0019] S3, filter and let stand.

[0020] Use a glass rod to fully stir the prepared paint. After stirring evenly, filter it through a 200-mesh filter screen and let it stand for no less than 20 minutes until all the bubbles in the solution have escaped before use.

[0021] S4, galvanized fasteners brush coated.

[0022] Dip a brush into the prepared varnish and evenly apply protective paint to the exposed parts of the installed marine galvanized fasteners.

[0023] S5, self-drying. After the painted marine galvanized fasteners are self-dried for 24 hours, the anti-corrosion process is completed. The equipment can then be installed in the next step.

[0024] In summary, the anti-corrosion process method for marine galvanized fasteners of the present invention can better enhance the anti-corrosion performance of exposed galvanized fasteners through the process of paint mixing, filtering and standing, brushing galvanized fasteners, and self-drying, thereby ensuring the use quality of marine galvanized fasteners.

[0025] Those skilled in the art can intuitively understand other advantages and effects of the present invention from the contents described in this specification. The details of this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

Claims

1. A process for anti-corrosion of marine galvanized fasteners, for marine galvanized fasteners including bolts, screws, nuts, washers, retaining rings, rivets and assemblies, characterized in that: The steps are as follows S1, select 1504 epoxy ester self-drying insulating varnish and xylene as a diluent, and clean the measuring cup with anhydrous ethanol and clean water respectively; S2, put the self-drying insulating varnish in a measuring cup, add xylene to dilute the self-drying insulating varnish, and use a viscometer to dynamically measure the viscosity of the paint to ensure that the working viscosity is between 12 and 18 seconds; S3, stir the prepared paint thoroughly with a glass rod, and filter it with a 200-mesh filter screen until all bubbles in the solution escape; S4, use a brush to dip the prepared varnish and evenly apply it to the exposed parts of the installed marine galvanized fasteners; S5, after the painted marine galvanized fasteners have dried for 24 hours, the anti-corrosion process is completed.

2. The anti-corrosion process for marine galvanized fasteners according to claim 1, characterized in that: When measuring the viscosity in step S2, the ambient temperature is maintained at 25±5°C.

3. A corrosion protection process for marine galvanized fasteners according to claim 1 or 2, characterized in that: The step S3 is left to stand for no less than 20 minutes.

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