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Ceramic transforming agent

A technology of ceramic agent and sodium fluoride, applied in the direction of metal material coating process, can solve problems such as heavy metal environmental pollution, and achieve the effects of low production cost, excellent coating adhesion, and cost reduction

Active Publication Date: 2017-05-31
东莞市精诚环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What cannot be ignored is that while the zinc phosphate treatment agent brings a lot of convenience to everyone, the heavy metals in the discharged waste liquid bring serious pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0018] The preparation method of the vitrifying agent is as follows: step 1: first pour deionized water into the mixer, then add fluozirconic acid and nitric acid into the deionized water, start the mixer, control the stirring speed to 30-40 rpm, The stirring time is 15-20 minutes, stirring until the fluozirconic acid and nitric acid are completely dissolved.

[0019] Step 2: Add zirconium nitrate and sodium fluoride to the mixer to obtain a mixture, heat the temperature of the mixture in the mixer to 55°C, control the stirring speed to 80 rpm, stir until the zirconium nitrate and sodium fluoride are completely dissolved, and wait for the mixer to When the temperature of the inner mixture is lowered to 30°C and the mixer is in the process of continuous stirring, add ammonium molybdate, citric acid and tartaric acid in sequence, and when the ammonium molybdate, citric acid and tartaric acid are stirred until they are completely dissolved, the mixer continues to stir for another ...

Embodiment 1

[0029] A vitrifying agent consisting of the following components by weight: nitric acid: 7%, fluorozirconic acid: 10.5%, zirconium nitrate: 4%, sodium fluoride: 0.7%, ammonium molybdate: 4%, citric acid: 5.5% , tartaric acid: 5%, hydroxylamine hydrochloride: 6%, chrome-free passivation additive AlbritectCP40: 0.13% and deionized water: 57.17%.

[0030] The preparation method of the vitrifying agent is as follows: Step 1: first pour deionized water into the mixer, then add fluozirconic acid and nitric acid into the deionized water, start the mixer, control the stirring speed to 32 rpm, and the stirring time For 19 min, stir until the fluozirconic acid and nitric acid are completely dissolved.

[0031] Step 2: Add zirconium nitrate and sodium fluoride to the mixer to obtain a mixture, heat the temperature of the mixture in the mixer to 55°C, control the stirring speed to 80 rpm, stir until the zirconium nitrate and sodium fluoride are completely dissolved, and wait for the mixer...

Embodiment 2

[0041] A vitrifying agent, composed of the following components by weight: nitric acid: 7.5%, fluozirconic acid: 11%, zirconium nitrate: 5%, sodium fluoride: 0.8%, ammonium molybdate: 4.5%, citric acid: 6% , tartaric acid: 6%, hydroxylamine hydrochloride: 7%, chrome-free passivation additive AlbritectCP40: 0.16% and deionized water: 52.04%.

[0042] The preparation method of the vitrifying agent is as follows: step 1: first pour deionized water into the mixer, then add fluozirconic acid and nitric acid into the deionized water, start the mixer, control the stirring speed to 36 rpm, and the stirring time For 16 min, stir until the fluozirconic acid and nitric acid are completely dissolved.

[0043] Step 2: Add zirconium nitrate and sodium fluoride to the mixer to obtain a mixture, heat the temperature of the mixture in the mixer to 55°C, control the stirring speed to 80 rpm, stir until the zirconium nitrate and sodium fluoride are completely dissolved, and wait for the mixer to...

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PUM

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Abstract

The invention relates to a ceramic transforming agent. The ceramic transforming agent is composed of, by weight, 6.6%-8.7% of nitric acid, 9.7%-13.4% of hexafluorozirconic acid, 3.0%-6.0% of zirconium nitrate, 0.5%-1.0% of sodium fluoride, 3.7%-5.9% of ammonium molybdate, 5.0%-7.0% of citric acid, 4.5%-7.0% of tartaric acid, 5.0%-8.0% of hydroxylammonium chloride, 0.1%-0.2% of chromium-free passivation additive Albritect CP40 and 42.8%-61.9% of deionized water. The ceramic transforming agent is a zirconium film treating agent. A layer of nanoscale ceramic transforming film is generated on the surface of a material treated through the ceramic transforming agent, so that the material has excellent coating adherence, corrosion resistance and impact resistance. The metal material treated through the ceramic transforming agent can pass the cross-cut test and the 50 KG stamping test after being coated, the time of a salt spraying test can be 500 hours or above, the ceramic transforming agent does not contain heavy metals such as phosphorus, nickel and manganese, is free from slag and conforms to European Union WEEE&RoHS instruction requirement, the metal materials such as steel, galvanized plates, pure aluminum and aluminum alloys are treated simultaneously, and tank liquid does not need to be replaced. The production cost is low, and the ceramic transforming agent does not need to be heated when used and is energy saving, environmentally friendly and free from pollution.

Description

technical field [0001] The invention relates to the field of treatment agents applied to metal materials such as steel, galvanized sheets, pure aluminum and aluminum alloys before coating. The invention is a zirconium-based film treatment agent, in particular to a vitrification agent. Background technique [0002] Although the traditional zinc phosphate treatment agent contains a large amount of heavy metals such as nickel and manganese, it is widely used in the pre-treatment of metal materials due to its simple process and low price. What cannot be ignored is that while the zinc phosphate treatment agent brings a lot of convenience to everyone, the heavy metals in the waste liquid it discharges bring serious pollution to the environment. With the increasing awareness of environmental protection of human beings and the continuous innovation of national environmental protection policies, the status of phosphating treatment has been inevitably shaken. Therefore, the developme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/44C23C22/73
CPCC23C22/44C23C22/73
Inventor 粟飞
Owner 东莞市精诚环保科技有限公司
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