Coating-processing process for marine-climate resisting engineering-part surface coating

A technology for processing technology and marine climate, which is applied in the direction of surface coating liquid devices, coatings, special surfaces, etc., can solve the problems of coating hardness, poor corrosion resistance, limited coating thickness, complicated electroplating process, etc., to achieve The effect of simple equipment, excellent corrosion resistance, and broadened application range

Active Publication Date: 2012-05-23
JIANGSU LINLONG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the prior art also adopts the electroplating process to form the coating, but the electroplating process also has the following defects: 1. The metal to be plated must be placed in the electrolytic tank for electroplating treatment; 2. The metal to be plated needs to be sprayed before electroplating. Therefore, not all metal parts can be electroplated; 3. The electroplating process is complicated and the cost is very high; 4. The thickness of the coating formed by the electroplating process is limited, so the hardness and corrosion resistance of the coating are poor.

Method used

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  • Coating-processing process for marine-climate resisting engineering-part surface coating
  • Coating-processing process for marine-climate resisting engineering-part surface coating

Examples

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Embodiment 1

[0061] Select the "connecting bolt" (material 40CrNiMo), a key part of an offshore wind turbine, to derust, degrease, clean, and pretreat the workpiece, and apply paint to the surface of the workpiece by brushing, dipping, spraying, etc. . The coated workpiece is first pre-baked in a drying oven at 80°C for 15-20 minutes, and then baked and solidified in a sintering furnace at 100-200°C for 25-30 minutes. Or use other heating methods, bake and cure at 100-200°C for 25-30 minutes. After cooling the baked workpiece to room temperature, repeat the above coating and baking process for secondary coating.

[0062] The conventional paint protection treatment was used, but significant corrosion occurred after only a few months. The paint and the coating method of the present invention are used to form a 20 μm thick coating, and then coated with 15 μm thick polysiloxane, and the accelerated corrosion simulation test results show that its durability can exceed 20 years in the seawater...

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Abstract

The invention relates to a coating-processing process for marine-climate resisting engineering-part surface coatings, which comprises the followings steps of: preprocessing a workpiece; configuring a coating solution, wherein the coating solution comprises aluminum-zinc-silicon alloy powder, an organic solvent, a nano-oxide particle enhancer, deionized water, a binder, a corrosion inhibitor, a dispersant and a thickener; coating; preliminarily drying; roasting and curing; cooling; and coating for the second time after cooling the roasted workpiece to the room temperature.

Description

technical field [0001] The invention relates to a coating treatment process for the surface coating of marine weather-resistant engineering parts. Background technique [0002] Offshore and marine engineering equipment is located in an environment with rainy, high temperature, salty fog and strong wind currents. According to the ISO9225 environmental evaluation standard, its service conditions are generally >C5 level, which belongs to the extremely harsh environment. The exposed parts will be subject to the combined effects of strong atmospheric corrosion, electrochemical corrosion and airflow erosion, and the service life of various steel structures is much lower than that of the general inland outdoor environment. For example, the wind power generation equipment in service under marine climate conditions is directly exposed to the extreme corrosive atmosphere due to the external components of the unit such as the nacelle, the engine cover, the tower, the blade root flan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/00B05D5/06B05D7/24B05D3/02
Inventor 冯立新张敏燕缪强
Owner JIANGSU LINLONG NEW MATERIALS
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