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A kind of tin plate passivation solution and passivation process

A technology of tin plate and passivation solution, applied in the field of passivation, can solve problems such as environmental and personal hazards, and achieve the effect of environment-friendly and efficient passivation process

Active Publication Date: 2021-05-28
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the oxidation resistance, corrosion resistance, anti-sulfurization and blackening properties of tinplate, tinplate is usually subjected to passivation treatment. At present, when passivation treatment is performed, the passivation solution is chromium containing hexavalent chromium However, hexavalent chromium in chromate is a very toxic substance, which is extremely harmful to the environment and human body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The tinplate passivation solution that present embodiment adopts, by mass concentration, component is as follows:

[0042] Fluotitanate ion 30g / L, fluozirconate ion 30g / L, permanganate ion 10g / L, hydrofluoric acid 2ml / L, phosphate 5g / L, organosilane 5g / L, and the rest is water.

[0043] In this embodiment, the above tinplate passivation solution is used, and the tinplate with passivation film is obtained through the following tinplate passivation process. Described tin plate passivation process comprises the steps:

[0044] Pretreat the tinned plate to be passivated to obtain the pretreated tinned plate;

[0045] Dilute the passivation solution as claimed in claim 1 to obtain a diluted passivation solution, use the diluted passivation solution to carry out passivation treatment to the pretreated tin-plated plate, and dry to obtain a tin-plated plate containing a passivation film ; During the passivation treatment, the diluted passivation solution is sprayed on the sur...

Embodiment 2

[0053] The tinplate passivation solution that present embodiment adopts, by mass concentration, component is as follows:

[0054] Fluotitanate ion 35g / L, fluozirconate ion 35g / L, permanganate ion 15g / L, hydrofluoric acid 2.5ml / L, phosphate 10g / L, organosilane 6.5g / L, and the rest is water.

[0055] In this embodiment, the above tinplate passivation solution is used, and the tinplate with passivation film is obtained through the following tinplate passivation process. Described tin plate passivation process comprises the steps:

[0056] Pretreat the tinned plate to be passivated to obtain the pretreated tinned plate;

[0057] Dilute the passivation solution as claimed in claim 1 to obtain a diluted passivation solution, use the diluted passivation solution to carry out passivation treatment to the pretreated tin-plated plate, and dry to obtain a tin-plated plate containing a passivation film ; During the passivation treatment, the diluted passivation solution is sprayed on th...

Embodiment 3

[0065] The tinplate passivation solution that present embodiment adopts, by mass concentration, component is as follows:

[0066] Fluotitanate ion 40g / L, fluozirconate ion 40g / L, permanganate ion 20g / L, hydrofluoric acid 3ml / L, phosphate 15g / L, organosilane 8g / L, and the rest is water.

[0067] In this embodiment, the above tinplate passivation solution is used, and the tinplate with passivation film is obtained through the following tinplate passivation process. Described tin plate passivation process comprises the steps:

[0068] Pretreat the tinned plate to be passivated to obtain the pretreated tinned plate;

[0069] Dilute the passivation solution as claimed in claim 1 to obtain a diluted passivation solution, use the diluted passivation solution to carry out passivation treatment to the pretreated tin-plated plate, and dry to obtain a tin-plated plate containing a passivation film ; During the passivation treatment, the diluted passivation solution is sprayed on the su...

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Abstract

The present invention provides a tinplate passivation solution and a passivation process. The passivation solution provided by the present invention has the following components in terms of mass concentration: 30-40g / L of fluorotitanate ions, 30-40g / L of fluorozirconate ions L, permanganate ion 10‑20g / L, hydrofluoric acid 2‑3ml / L, phosphate 5‑15g / L, organosilane 5‑8g / L, and the rest is water.

Description

technical field [0001] The invention belongs to the field of passivation, and in particular relates to a passivation solution and a passivation process for tin-plated plates. Background technique [0002] Tin plate refers to a steel plate coated with a thin layer of metallic tin on the surface. In order to improve the oxidation resistance, corrosion resistance, anti-sulphurization and blackening properties of tinplate, tinplate is usually subjected to passivation treatment. At present, when passivation treatment is performed, the passivation solution is chromium containing hexavalent chromium However, the hexavalent chromium in chromate is a very toxic substance, which is extremely harmful to the environment and the human body. Therefore, developing a chromium-free passivation solution for the passivation of tin-plated plates has become an urgent problem in this field. Contents of the invention [0003] In view of the above problems, the present invention is proposed to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/36C23C22/78C23C22/76
CPCC23C22/364C23C22/76C23C22/78
Inventor 孙宇万一群王振文朱防修王爱红吴明辉李永新胡建军潘东远李海旭方圆王雅晴尹显东方健
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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