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Galvanized and electrophoretic paint coated gas steel pipe and preparation method of galvanized and electrophoretic paint coated gas steel pipe

A technology of galvanized steel pipe and electrophoretic paint, applied in the direction of electrophoretic coating, pipe, rigid pipe, etc., can solve the problem that galvanized steel pipe cannot withstand acid and alkaline environment corrosion, and galvanized steel pipe is not very effective in rust prevention and ultraviolet resistance. Good, reduce the service life of gas pipelines, etc., to achieve the effect of improving rust and ultraviolet resistance, good acid and alkali resistance, broadening the scope of use and environmental adaptability

Active Publication Date: 2017-03-22
济南迈科管道科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, galvanizing technology is mostly used for surface treatment of steel pipes. Galvanized steel pipes cannot withstand corrosion in acidic and alkaline environments. In addition, galvanized steel pipes are not very effective in antirust and UV resistance.
Gas steel pipes are mostly used outdoors. During the use of gas steel pipes installed outdoors, due to rainfall, acidic substances in the atmosphere, and ultraviolet rays, it is easy to cause damage to the steel pipe matrix of outdoor gas steel pipes, reducing the use of gas pipes. At the same time, most of the surface colors of galvanized steel pipes do not match the colors of other pipelines and their connectors used in conjunction with them, which affects the aesthetics of the construction. It is necessary to spray protective paint on the entire pipeline connected to galvanized steel pipes to unify the color of the pipelines, increasing Protective paint material consumption
How to overcome the defects that galvanized steel pipes cannot withstand corrosion in acidic and alkaline environments, improve the antirust and ultraviolet resistance effects of galvanized steel pipes, prolong the service life of gas pipelines, and realize the surface color of galvanized steel pipes and other pipelines used in conjunction with them The consistent color of the connectors is a technical problem that needs to be solved

Method used

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  • Galvanized and electrophoretic paint coated gas steel pipe and preparation method of galvanized and electrophoretic paint coated gas steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Such as figure 1 As shown, a galvanized electrophoretic paint steel pipe for gas, including a steel pipe substrate, is characterized in that: the surface of the steel pipe substrate has a galvanized layer and an electrophoretic paint layer in turn, the galvanized layer is the inner layer, and the electrophoretic paint is Outer layer: the thickness of the galvanized layer is 55 μm, the thickness of the electrophoretic paint layer is 30 um, adhesion ≤ grade 1, impact force ≥ 70kg.cm, pencil hardness ≥ H, UV resistance 400h, acid resistance 3 hours (6mol);

[0019] The electrophoretic paint layer is an acrylic epoxy resin paint layer.

[0020] A method for preparing a galvanized electrophoretic paint steel pipe for gas, characterized in that it comprises the following steps:

[0021] A. Galvanizing steps for the steel pipe substrate: when the steel pipe substrate is galvanized, the temperature of the galvanizing solution is 435°C, the galvanizing time is 45 seconds, the w...

Embodiment 2

[0027] Such as figure 1 As shown, a galvanized electrophoretic paint steel pipe for gas, including a steel pipe substrate, is characterized in that: the surface of the steel pipe substrate has a galvanized layer and an electrophoretic paint layer in turn, the galvanized layer is the inner layer, and the electrophoretic paint layer is Outer layer; the thickness of the galvanized layer is 60 μm, the thickness of the electrophoretic paint layer is 40 um, adhesion ≤ grade 1, impact force ≥ 70kg.cm, pencil hardness ≥ H, UV resistance 500h, acid resistance 4 hours (6mol);

[0028] The electrophoretic paint layer is an acrylic epoxy resin paint layer.

[0029] A method for preparing a galvanized electrophoretic paint steel pipe for gas, characterized in that it comprises the following steps:

[0030] A. Galvanizing steps for the steel pipe substrate: when the steel pipe substrate is galvanized, the temperature of the galvanizing solution is 455°C, the galvanizing time is 55 seconds,...

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Abstract

The invention discloses a galvanized and electrophoretic paint coated gas steel pipe and a preparation method of the galvanized and electrophoretic paint coated gas steel pipe. The galvanized and electrophoretic paint coated gas steel pipe comprises a steel pipe substrate, and is characterized in that a galvanizing layer and an electrophoretic paint coating layer are sequentially arranged on the surface of the steel pipe substrate. The galvanizing layer is an inner layer. The electrophoretic paint coating layer is an outer layer. The thickness of the galvanizing layer is 55-60 microns. The thickness of the electrophoretic paint coating layer is 30-40 microns. The grade of the adhesive force is equal to or smaller than 1. The impact force is equal to or larger than 70 kg.cm. The pencil hardness is higher than H. The galvanized and electrophoretic paint coated gas steel pipe resists UV for 400-500 h. The acid resistance is 3-4 h (6 mol). The defect that a traditional galvanized steel pipe cannot resist acidic corrosion and alkaline corrosion is overcome, the rust-proof effect and the UV resistant effect of the galvanized and electrophoretic paint coated gas steel pipe are improved, the durable years of the galvanized and electrophoretic paint coated gas steel pipe and a gas pipeline connected with the galvanized and electrophoretic paint gas coated gas steel pipe are prolonged, and the market share is increased.

Description

technical field [0001] The invention belongs to a pipe product for pipeline connection and a preparation method thereof, in particular to a galvanized electrophoretic paint steel pipe for gas and a preparation method thereof. Background technique [0002] At present, galvanizing technology is mostly used for surface treatment of steel pipes. Galvanized steel pipes cannot withstand corrosion in acidic and alkaline environments. In addition, the anti-rust and ultraviolet resistance effects of galvanized steel pipes are not very good. Gas steel pipes are mostly used outdoors. During the use of gas steel pipes installed outdoors, due to rainfall, acidic substances in the atmosphere, and ultraviolet rays, it is easy to cause damage to the steel pipe matrix of outdoor gas steel pipes, reducing the use of gas pipes. At the same time, most of the surface colors of galvanized steel pipes do not match the colors of other pipelines and their connectors used in conjunction with them, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/14C25D13/06C25D13/20F16L9/02
CPCC25D13/04C25D13/14C25D13/20F16L9/02
Inventor 孔令磊任艳青杨超张传兵张德刚姜永
Owner 济南迈科管道科技有限公司
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