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A method for removing the paint layer on the surface of ironware

A paint layer and iron tool technology, which is applied in the field of removing the paint layer on the surface of iron tools, can solve the problems of large environmental pollution, easy generation of harmful gases, and adverse effects on workpiece substrates.

Active Publication Date: 2016-01-20
JIANGSU PENGFEI GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the paint removers used in the existing chemical treatment methods are organic solvents, which cause great environmental pollution.
The baking heat treatment law is prone to produce harmful gases and has an adverse effect on the workpiece substrate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Sample preparation: Spray a layer of 0.2mm thick paint layer on the polished iron plate. The paint is Red Lion alkyd antirust paint, and the spraying operation is carried out according to the product instructions.

[0011] Cool the iron plate sprayed with paint to -30°C, keep it at this temperature for 15 minutes, and then quickly immerse it in a paint stripping solution with a temperature of 40°C. The paint stripping solution is sodium hydroxide and octylphenol polyoxyethylene ether OP -10 mixed aqueous solution (the concentration of sodium hydroxide is 5wt%, the concentration of octylphenol polyoxyethylene ether OP-10 is 1wt%), and at the same time, it is treated with ultrasonic waves with a frequency of 5MHz for 30min, taken out, rinsed, and the surface of the iron plate The paint layer is completely peeled off.

Embodiment 2

[0014] Sample preparation: Spray a layer of 0.3mm thick paint layer on the polished iron plate. The paint is HEMPEL Epoxy Paint 15570, and spray according to the product instructions.

[0015] Cool the iron plate sprayed with paint to -20°C, keep it at this temperature for 20 minutes, and then quickly immerse it in a paint stripping solution with a temperature of 45°C. The paint stripping solution is sodium hydroxide and octylphenol polyoxyethylene ether OP -10 mixed aqueous solution (the concentration of sodium hydroxide is 2wt%, the concentration of octylphenol polyoxyethylene ether OP-10 is 1wt%). The paint layer is completely peeled off.

Embodiment 3

[0018] Sample preparation: Spray a layer of 0.4mm thick paint layer on the polished iron plate. The paint is Red Lion brand alkyd antirust paint, and the spraying operation is carried out according to the product instructions.

[0019] Cool the iron plate sprayed with paint to -15°C, keep it at this temperature for 10 minutes, and then quickly immerse it in a paint stripping solution at a temperature of 50°C. The paint stripping solution is sodium hydroxide and octylphenol polyoxyethylene ether OP -10 mixed aqueous solution (the concentration of sodium hydroxide is 4wt%, the concentration of octylphenol polyoxyethylene ether OP-10 is 0.5wt%), and at the same time, it is treated with an ultrasonic wave with a frequency of 1MHz for 50min, taken out, rinsed, and the surface of the iron plate The paint layer is completely peeled off.

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PUM

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Abstract

The invention discloses a method for removing a paint layer on the surface of an iron tool. The method comprises the following steps of performing heat preservation on a workpiece at the temperature of minus 15-minus 30 DEG C for 10-20min, then immersing into a paint stripping solution, and performing ultrasonic treatment for 30-50min, wherein the paint stripping solution contains 2-5wt% of sodium hydroxide, 0.5-1wt% of octylphenol polyoxyethylene ether OP-10 and the balance of water. The method disclosed by the invention has the advantages of simplicity in operation, good paint stripping effect, wide range of application and little environmental pollution.

Description

technical field [0001] The invention relates to a method for removing the paint layer on the surface of iron tools. Background technique [0002] In order to prevent iron workpieces from rusting, a layer of anti-rust paint is usually sprayed on the surface of iron tools. The paint layer will age and fall off due to long-term exposure, or when the workpiece is being repaired, such as welding, it is necessary to remove the rust on the surface of the workpiece. The paint is completely removed for repainting or repairs. Most of the paint strippers used in the existing chemical treatment methods are organic solvents, which cause great environmental pollution. The baking heat treatment method is prone to produce harmful gases and has an adverse effect on the workpiece substrate. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and a method for removing the paint layer on the surface of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/19C09D9/04
Inventor 杨龙兴
Owner JIANGSU PENGFEI GROUP