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Room-temperature passivation liquid for cast iron cylinder

A passivation liquid and cylinder technology, applied in the direction of metal material coating process, can solve the problem of not meeting the passivation requirements of cast iron cylinder film, and achieve the effect of eliminating heating equipment, meeting passivation requirements and saving energy.

Inactive Publication Date: 2014-12-31
WUXI LUOSHE TECH VENTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It still cannot meet the film passivation requirements of cast iron cylinders

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A room temperature passivation solution for cast iron cylinders, the passivation solution consists of the following components by weight percentage: phytic acid 13%, selenite 4%, ferrous sulfate 0.5%, sodium benzoate 3%; triethanolamine 14% , industrial sodium carbonate 2.5%, bromic acid 0.5%, benzotriazole 0.4%, industrial alcohol 2.5%, isothiimidazolone 0.6%, tap water balance.

Embodiment 2

[0015] A room temperature passivation solution for cast iron cylinders, the passivation solution consists of the following components in weight percentage: phytic acid 15%, selenite 3%, ferrous sulfate 1.5%, sodium benzoate 2%; triethanolamine 16% , industrial sodium carbonate 1.5%, bromic acid 0.8%, benzotriazole 0.2%, industrial alcohol 3.5%, isothiimidazolone 0.4%, tap water balance.

Embodiment 3

[0017] A room temperature passivation solution for cast iron cylinders, the passivation solution consists of the following components in weight percentage: phytic acid 14%, selenite 3.5%, ferrous sulfate 1.0%, sodium benzoate 2.5%; triethanolamine 15% , industrial sodium carbonate 2.0%, bromic acid 0.65%, benzotriazole 0.3%, industrial alcohol 3.0%, isothiimidazolone 0.5%, tap water balance.

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PUM

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Abstract

The invention discloses a room-temperature passivation liquid for a cast iron cylinder. The room-temperature passivation liquid comprises, by weight, 13-15% of phytic acid, 3-4% of seleninic acid, 0.5-1.5% of ferrous sulphate, 2-3% of sodium benzoate, 14-16% of triethanolamine, 1.5-2.5% of industrial sodium carbonate, 0.5-0.8% of bromic acid, 0.2-0.4% of benzotriazole, 2.5-3.5% of industrial alcohol, 0.4-0.6% of isothia-imidazolone and the balance tap water.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to a room temperature passivation solution for cast iron cylinders. Background technique [0002] Metal passivation treatment is an important part of metal surface engineering. The essence of metal passivation treatment is to carry out chemical reactions in the corresponding treatment liquid under the specified process conditions and process parameters to form a chemical conversion film on the surface, also known as passivation. membrane. The passivation film should not only give the metal surface a certain degree of protection and decoration, but also prevent the corrosion of the metal surface by the corrosive medium in the atmosphere. In the transfer process, the metal workpiece must meet the technical requirements of the passivation film layer equivalent to the conventional phosphating film layer before spraying and painting, and must be suitable for various spraying a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/50
Inventor 高忠清
Owner WUXI LUOSHE TECH VENTURE
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