Corrosion-resistant galvanizing bath

Abstract

The utility model discloses a corrosion-resistant galvanizing bath which comprises a galvanizing bath body, a composite layer structure is arranged on the galvanizing bath body, and the composite layer structure comprises a corrosion-resistant lining layer, a middle layer, a base layer and a corrosion-resistant outer layer. The anti-corrosion lining layer is made of a polytetrafluoroethylene material, the middle layer is made of a glass fiber reinforced epoxy resin composite material, the base layer is made of a stainless steel plate, and the anti-corrosion outer layer is made of a fluorocarbon coating. The stainless steel plate base layer has enough thickness and can provide stable shape and strength support for the whole galvanizing bath; the middle layer has relatively high strength and rigidity, and can effectively disperse stress and prevent the tank body from being deformed or damaged when bearing the pressure of a galvanizing solution and possible external impact force, so that the stability of the galvanizing tank in a long-term use process is guaranteed; the anti-corrosion lining layer and the anti-corrosion outer layer have good chemical corrosion resistance.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of corrosion-resistant galvanizing tank. BACKGROUND

[0002] Galvanizing is a kind of surface treatment process widely used in metal protection and decoration, and galvanizing tank as the key equipment in the process of galvanizing, its performance directly affects the quality and production efficiency of galvanizing product.

[0003] In traditional galvanizing process, galvanizing tank is exposed to high temperature, strong acid and alkali galvanizing solution and humid, corrosive industrial environment for a long time, and it faces serious corrosion problem, therefore the present application provides a kind of corrosion-resistant galvanizing tank. SUMMARY

[0004] The main purpose of the utility model is to provide a kind of corrosion-resistant galvanizing tank, to solve the above technical problems.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of corrosion-resistant galvanizing tank, including galvanizing tank body, the galvanizing tank body is equipped with composite layer structure, the composite layer structure includes anticorrosion inner lining, intermediate layer, base layer and anticorrosion outer layer;The anticorrosion inner lining is made of polytetrafluoroethylene material, the intermediate layer is made of glass fiber reinforced epoxy resin composite material, the base layer is made of stainless steel plate, and the anticorrosion outer layer is made of fluorocarbon paint.

[0006] On the basis of the above scheme and as the preferred scheme of the above scheme: the thickness of the anticorrosion inner lining is 3-8mm, and the inner surface of the anticorrosion inner lining is provided with grid-shaped texture structure;The grid unit length of grid-shaped texture structure is 2.5-2mm.

[0007] On the basis of the above scheme and as the preferred scheme of the above scheme: the thickness of the intermediate layer is 5-12mm.

[0008] On the basis of the above scheme and as the preferred scheme of the above scheme: the thickness of the base layer is 8-15mm.On the basis of the above scheme and as the preferred scheme of the above scheme: the thickness of the anticorrosion outer layer is 0.5-2mm.

[0009] The utility model has the beneficial effects as follows: in the utility model, the stainless steel plate base layer has sufficient thickness, can provide stable shape and strength support for the whole galvanizing tank;The intermediate layer has higher strength and rigidity, can effectively disperse stress when bearing the pressure of galvanizing solution and possible external impact force, prevent tank body deformation or damage, guarantee the stability of galvanizing tank in long-term use process;The anticorrosion inner lining and anticorrosion outer layer have good chemical corrosion resistance. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a schematic diagram of the overall structure of the present application. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme in the embodiments will be clearly and completely described below in combination with the drawings in the embodiments. However, the following specific embodiments and examples are only for the purpose of illustration, and are not a limitation on the present application.

[0012] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0013] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0014] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0015] In the present utility model, unless otherwise expressly provided and limited, the first feature is "on" or "under" the second feature, which can be direct contact of the first and second features, or indirect contact of the first and second features through an intermediate medium.

[0016] Referring to the drawings Figure 1 The corrosion-resistant galvanizing tank in the embodiment comprises a galvanizing tank body, a composite layer structure is arranged on the galvanizing tank body, the composite layer structure comprises an anticorrosion inner lining layer 1, an intermediate layer 2, a base layer 3 and an anticorrosion outer layer 4; the anticorrosion inner lining layer 1 is made of polytetrafluoroethylene material, the intermediate layer 2 is made of glass fiber reinforced epoxy resin composite material, the base layer 3 is made of stainless steel plate, and the anticorrosion outer layer 4 is made of fluorocarbon paint.

[0017] In the embodiment, the anticorrosion inner lining layer 1 is made of polytetrafluoroethylene, and the thickness thereof is in the range of 3-8 mm, preferably 5 mm. The anticorrosion inner lining layer 1 can effectively prevent the galvanizing solution from corroding the tank body, and can also take into account the cost and the utilization of the internal space of the tank body to some extent; polytetrafluoroethylene has extremely low surface energy, so that the galvanizing solution is difficult to adhere to the surface thereof, thereby significantly reducing the accumulation of zinc slag on the tank wall; polytetrafluoroethylene has extremely strong chemical corrosion resistance and can resist various strong acid and strong alkali media including hydrochloric acid, sulfuric acid and sodium hydroxide, and still maintains stable chemical properties in an environment with a temperature in the range of 200 DEG C to 260 DEG C, thereby ensuring that the anticorrosion inner lining layer 1 is not corroded under various complex working conditions in the galvanizing process.

[0018] Preferably, the inner surface of the layer is processed with a specific micro-texture structure, the micro-texture is distributed in a grid shape, the side length of the grid unit is 0.5-2 mm, the depth is 10-50 microns, and the width is 5-20 microns; the micro-texture can destroy the surface tension of the galvanizing solution, promote the more uniform distribution of zinc ions in the galvanizing process, effectively improve the quality and uniformity of the galvanizing layer, and reduce the defects of the plated layer.

[0019] In the embodiment, the intermediate layer 2 is made of glass fiber reinforced epoxy resin composite material, wherein the weight ratio of glass fiber to epoxy resin is 3:7 to 5:5, more preferably 4:6; the glass fiber is selected from alkali-free glass fiber, the monofilament diameter of the glass fiber is 5-15 microns, and the length is 3-8 mm, so that the glass fiber can provide good reinforcing effect for the composite material.

[0020] The thickness of the intermediate layer 2 is between 5-12mm, preferably 8mm, which can effectively enhance the strength and rigidity of the whole tank structure, can bear the pressure from the internal zinc plating solution and certain external impact force, and prevent the anticorrosive inner lining from being damaged due to external force.

[0021] In the embodiment, the base layer 3 is made of stainless steel plate, and the stainless steel material is 316L stainless steel; the thickness of the base layer is 8-15mm, preferably 10mm, which serves as the main structural framework of the whole zinc plating tank, provides basic shape and strength support, and can bear various stresses of the whole zinc plating tank during transportation, installation and use.

[0022] In the embodiment, the outer surface of the base layer 3 is coated with a layer of anticorrosive paint with a thickness of 0.5-2mm, which is fluorocarbon paint; the fluorocarbon paint has excellent chemical corrosion resistance, can resist the corrosion of various corrosive gases and media such as sulfur dioxide, hydrogen sulfide and salt spray, further prevents the corrosion of external environmental factors such as humid air and acid-base gas to the base layer, and significantly prolongs the service life of the zinc plating tank.

[0023] The above embodiments are only preferred embodiments of the utility model, and do not limit the protection scope of the utility model, so that: equivalent changes made according to the structure, shape and principle of the utility model should be covered in the protection scope of the utility model.

Claims

1. A corrosion-resistant galvanizing bath characterized by: The galvanizing tank body is provided with a composite layer structure, which comprises an anticorrosion inner lining layer, an intermediate layer, a base layer and an anticorrosion outer layer; the anticorrosion inner lining layer is made of polytetrafluoroethylene material, the intermediate layer is made of glass fiber reinforced epoxy resin composite material, the base layer is made of stainless steel plate, and the anticorrosion outer layer is made of fluorocarbon paint.

2. A corrosion resistant galvanizing bath according to claim 1, characterized in that: The thickness of the anticorrosion inner lining layer is 3-8 mm, and the inner surface of the anticorrosion inner lining layer is provided with a grid-shaped texture structure; the grid unit of the grid-shaped texture structure has a side length of 2.5-2 mm.

3. A corrosion resistant galvanizing bath according to claim 2, wherein: The thickness of the intermediate layer is 5-12 mm.

4. A corrosion resistant galvanizing bath according to claim 3, wherein: The thickness of the base layer is 8-15 mm.

5. A corrosion resistant galvanizing bath according to claim 4 wherein: The thickness of the anticorrosion outer layer is 0.5-2 mm.

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