Coating method for water-based paint for engineering machines

A coating method and technology of water-based coatings, applied in anti-corrosion coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve problems such as difficulty in meeting the coating requirements of construction machinery, avoid the disadvantages of paint film, and achieve dimensional stability. Good performance and flexibility

Pending Publication Date: 2017-10-10
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing construction machinery coating lines are all designed according to solvent-based coatings. In the process of converting into water-based coatings, various paint film defects are prone to occur, and it is difficult to meet the coating requirements of construction machinery.

Method used

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  • Coating method for water-based paint for engineering machines
  • Coating method for water-based paint for engineering machines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Substrate pretreatment: refers to the shot blasting treatment of the steel material construction machinery substrate, and then wiped with a solvent to remove rust, oil, dust, cutting fluid, anti-flying agent, flaw detection agent, etc. on the surface of the substrate to obtain pretreatment base material.

[0033] Baking after spraying the primer and leveling: keep the ambient temperature between 10-30°C and the ambient humidity ≤75%, and adjust the surface temperature of the substrate to be 5°C higher than the dew point temperature. The above-mentioned pretreated substrate is then subjected to a spray primer.

[0034]Wherein said primer is made up of A component and B component, and said A component is made up of waterborne epoxy resin, auxiliary agent (containing RAYBO60, U.S. Ruibao, 1% by weight), filler, pigment and water, so The B component is a water-based fatty amine curing agent. Mix 5 parts by mass of component A and 1 part by mass of component B, and use a p...

Embodiment 2

[0039] Substrate pretreatment: refers to the shot blasting treatment of the aluminum alloy engineering machinery substrate, and then wiped with a solvent to remove rust, oil, dust, cutting fluid, anti-flying agent, flaw detection agent, etc. on the surface of the substrate to obtain pretreatment base material.

[0040] Baking after spraying the primer and leveling: keep the ambient temperature between 10-30°C, the ambient humidity ≤75%, and adjust the surface temperature of the substrate to be 3°C higher than the dew point temperature. The above-mentioned pretreated substrate is then subjected to a spray primer.

[0041] Wherein said primer is made up of A component and B component, and said A component is made up of waterborne epoxy resin, auxiliary agent (containing RAYBO60, U.S. Ruibao, 1.5% by weight), filler, pigment and water, so The B component is a polyamide curing agent. Mix 4 parts by mass of component A and 1 part by mass of component B, and spray it with a pressu...

Embodiment 3

[0046] Substrate pretreatment: refers to the shot blasting treatment of the cast iron construction machinery substrate, and then wiped with a solvent to remove rust, oil, dust, cutting fluid, anti-flying agent, flaw detection agent, etc. on the surface of the substrate to obtain pretreated Substrate.

[0047] Baking after spraying primer and leveling: keep the ambient temperature between 10-30°C, ambient humidity ≤75%, and adjust the surface temperature of the substrate to be 4°C higher than the dew point temperature. The above-mentioned pretreated substrate is then subjected to a spray primer.

[0048] Wherein said primer is composed of A component and B component. The A component is composed of water-based epoxy resin, additives (including RAYBO60, American Ruibao, 0.8% by weight), filler, pigment and water, and the B component is a water-based fatty amine curing agent. Mix 6 parts by mass of component A and 1 part by mass of component B, and spray it with a pressure-feedi...

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Abstract

The invention provides a coating method for water-based paint for engineering machines. The method comprises the following steps that a base material is pretreated; primer is sprayed, and baking is conducted after leveling; and finishing coat is sprayed, and baking is conducted after leveling, wherein the primer is water-based epoxy corrosion resisting primer, and the finishing coat is water-based crylic acid polyurethane finishing coat. By adoption of the coating method and in cooperation with the specific water-based paint for coating of the engineering machine base material, the defect of a paint film can be effectively avoided, and the flexibility, corrosion resistance and durability of the paint film are greatly improved.

Description

technical field [0001] The invention relates to the technical field of painting, in particular to a special water-based paint painting method for engineering machinery. Background technique [0002] In recent years, with the increasingly serious environmental pollution, industrial coating, as one of the sources of man-made emissions of volatile organic compounds (VOC), seriously affects the atmospheric environment. In order to protect the environment and prevent pollution, various localities have formulated emission standards for air pollutants in the industrial coating process. At present, most construction machinery coatings use solvent-based coatings. The products contain a large amount of toxic and harmful substances and are flammable and explosive. Construction machinery coatings are developing in the direction of environmental protection. Water-based coatings are low-carbon and environmentally friendly coating methods. Accepted by more and more people, water-based coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D7/00B05D3/02C09D163/00C09D175/04C09D5/08
CPCB05D3/0254B05D7/14B05D7/544B05D2202/10B05D2202/15B05D2202/25B05D2503/00B05D2504/00C09D5/08C09D163/00C09D175/04B05D2420/01B05D2420/02
Inventor 王瑞宏郭晓峰郭晓猛周泽钱李幕英
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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