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Flange surface anti-rust treatment method

A flange surface, anti-rust treatment technology, applied in the direction of pretreatment surface, surface coating liquid device, coating, etc., can solve the complex geometry of flange connection, damage to the integrity of pipeline system, galvanic corrosion, etc. problems, to achieve the effect of improving fatigue strength and corrosion resistance, solving crevice corrosion, and improving rust resistance

Inactive Publication Date: 2018-11-13
CHAOHU NANTE PRECISION MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the complex geometry of the flange connection, gap corrosion between two flange surfaces and galvanic corrosion between different metals are prone to occur, which will seriously damage the integrity of the pipeline system. Therefore, we propose a method Blue surface antirust treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First prepare anti-corrosion coatings, thinners, curing agents and coating tools in advance, check the quality certification documents, Chinese signs and inspection reports of anti-corrosion coatings, thinners and curing agents, etc., to ensure that their varieties, specifications and performance meet the requirements Specify the technical requirements of the product and relevant national standards; clean up the rust, oil, dust and other debris on the surface of the flange before painting; prepare the anti-corrosion paint and thinner according to the mass ratio of 9:1 before painting, and stir evenly , Mix evenly and mature for 30 minutes before use. When brushing, first go up and then down, first difficult and then easy, and keep the color consistent, uniform thickness, avoid flowing, in order to prevent dripping and flowing, the brush should not be dipped too full, dipped to the length of the bristles Half; mix the anti-corrosion paint, diluent and curing agent accordi...

Embodiment 2

[0025] In embodiment one, add following operation:

[0026] The anticorrosion coating, diluent and curing agent in the step (1) should not have phenomena such as skinning, agglomeration, and gel.

[0027] First prepare anti-corrosion coatings, thinners, curing agents and coating tools in advance, check the quality certification documents, Chinese signs and inspection reports of anti-corrosion coatings, thinners and curing agents, etc., to ensure that their varieties, specifications and performance meet the requirements According to the technical requirements and relevant national standards of specified products, among them, anti-corrosion coatings, thinners and curing agents should not have skinning, agglomeration, gel, etc.; remove rust, oil, dust and other sundries on the surface of the flange before painting. Clean up; before painting, prepare the anti-corrosion paint and thinner according to the mass ratio of 9:1, and stir evenly, mix evenly and mature for 30 minutes befor...

Embodiment 3

[0029] In embodiment two, add following operation:

[0030] In the step (1), the anticorrosion coating adopts a zinc finish paint, the diluent adopts a kind of in acetone, methyl ethyl ketone, cyclohexanone, benzene, toluene, xylene, n-butanol and styrene, and the curing agent adopts aliphatic amines and aromatic One of the amines.

[0031] First prepare anti-corrosion coatings, thinners, curing agents and coating tools in advance, check the quality certification documents, Chinese signs and inspection reports of anti-corrosion coatings, thinners and curing agents, etc., to ensure that their varieties, specifications and performance meet the requirements According to the technical requirements and relevant national standards of specified products, among them, anti-corrosion coatings, diluents and curing agents should not have skinning, agglomeration, gel, etc. Among them, zinc topcoat is used for anti-corrosion coatings, and acetone, methyl ethyl ketone, and environmental prot...

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PUM

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Abstract

The invention discloses a flange surface anti-rust treatment method which comprises the following steps: material preparation: preparing anti-corrosion coating, a diluent, a curing agent and a coatingtool in advance, and checking quality certificates, Chinese signs, inspection reports and the like of the anti-corrosion coating, the diluent, the curing agent and other products, so as to guaranteethat the varieties, the specifications, the properties and the like of the specified products meet the technical requirements and the related national standards; base surface treatment: clearing ironrust, oil dirt, dust and other impurities on the surface of a flange before coating; and primer coating: blending the anti-corrosion coating and the diluent according to a mass ratio of 9:1 before coating, carrying out uniform stirring, and carrying out coating by using the anti-corrosion coating blended with the diluent 30 minutes after uniform mixing and curing, wherein the upper part is coatedat first and then the lower part is coated during the coating process, the difficult coating operation is performed before the easy coating operation, the color consistency is kept, and the thicknessuniformity is ensured. By adoption of the flange surface anti-rust treatment method disclosed by the invention, the anti-rust capability of the flange can be effectively improved, and the problem thatthe integrity of a pipeline system is severely damaged by both the clearance corrosion between flange surfaces and the galvanic corrosion between different metals can be solved.

Description

technical field [0001] The invention relates to the technical field of flange antirust, in particular to a flange surface antirust treatment method. Background technique [0002] Flange is otherwise known as flange flange or flange. Flanges are parts that are connected to each other between shafts and are used for connection between pipe ends; they are also useful for flanges on equipment inlets and outlets, And can be used as connection between two equipments, example reducer flanges. Flange connection or flange joint refers back to the detachable connection of flange, Gasket and bolt as a team of combined sealing structure. Pipe flange refers back to the flange used for piping in the pipeline installation, And used on the equipment refers to the inlet and outlet flange of the equipment. There are holes in the flange, and the bolts tightly connect the two flanges. The flanges are sealed with gaskets. Flanges are divided into threaded (screw connection) flanges, welding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/10
CPCB05D3/102B05D7/14
Inventor 陈盛远王胜陈勇孙海峰贾飞
Owner CHAOHU NANTE PRECISION MFG