Four-in-one brush coating chemical conversion solution

A technology of chemical conversion and conversion liquid, applied in the direction of metal material coating process, etc., can solve the problem of operator hazards, and achieve the effects of comprehensive cost reduction, good film formation and convenient operation.

Inactive Publication Date: 2016-08-03
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Potassium fluoride and lead nitrate used in this patent are harmful to operators

Method used

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  • Four-in-one brush coating chemical conversion solution
  • Four-in-one brush coating chemical conversion solution
  • Four-in-one brush coating chemical conversion solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A four-in-one brush coating chemical conversion solution, the composition of which includes the following components by weight: 10 parts of degreasing agent, 30 parts of rust remover, 100 parts of film forming agent, 5 parts of oxidizing agent, 10 parts of complexing agent, corrosion inhibitor 2 parts of agent, add water to 1000 parts, and adjust the pH value to 1.75.

[0036] The method of using the above-mentioned four-in-one brushing chemical conversion liquid is as follows: first remove the heavy oil and floating rust on the surface of 35CrMnSi steel, and keep the brushed surface dry; After the surface is slightly dry, brush off the air bubbles and excess conversion liquid on the surface; finally place it in a ventilated place to dry naturally.

[0037] Depend on figure 1 It can be seen that the phase composition of the brush-coated conversion coating is zinc phosphate (Zn 3 (PO 4 )2 4H 2 O). Zinc phosphate itself has good corrosion resistance and is a non-cond...

Embodiment 2

[0039] A four-in-one brush coating chemical conversion solution, the composition of which includes the following components by weight: 15 parts of degreasing agent, 25 parts of rust remover, 90 parts of film forming agent, 3 parts of oxidizing agent, 12 parts of complexing agent, corrosion inhibitor 4 parts of agent, add water to 1000 parts, and adjust the pH value to 2.0.

[0040] The method of using the above-mentioned four-in-one brushing chemical conversion liquid is as follows: first remove the heavy oil and floating rust on the surface of 35CrMnSi steel, and keep the brushed surface dry; After the surface is slightly dry, brush off the air bubbles and excess conversion liquid on the surface; finally place it in a ventilated place to dry naturally.

Embodiment 3

[0042] A four-in-one brush coating chemical conversion liquid, its composition includes the following components by weight: 12 parts of degreasing agent, 35 parts of rust remover, 120 parts of film forming agent, 6 parts of oxidizing agent, 13 parts of complexing agent, corrosion inhibitor 5 parts of agent, add water to 1000 parts, and adjust the pH value to 1.6.

[0043] The method of using the above-mentioned four-in-one brushing chemical conversion liquid is as follows: first remove the heavy oil and floating rust on the surface of the 35CrMnSi steel, and keep the brushed surface dry; After the surface is slightly dry, brush off the air bubbles and excess conversion liquid on the surface; finally place it in a ventilated place to dry naturally.

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Abstract

The invention discloses a four-in-one brush coating chemical conversion solution. The conversion solution comprises, by weight, 1-1.5% of degreasing agents, 2.5-3.5% of rust removers, 9-13% of film forming agents, 0.3-0.8% of oxidizing agents, 0.8-1.3% of complexing agents, 0.2-0.6% of corrosion inhibitors, and the balance water. The pH value is adjusted to 1.5-2.0. An application method comprises the steps that firstly, heavy greasy dirt and floating rust on the iron and steel surface are cleaned away, and a brush coating surface is kept dry; secondly, a paint brush is stained with the conversion solution to brush iron and steel repeatedly for 30-60 s, and bubbles and redundant conversion solutions on the surface are brushed away after the surface is slightly dried; and finally, the iron and steel are placed in a ventilating position and dried naturally in the air. By adopting the four-in-one brush coating chemical conversion solution, the four steps of degreasing, derusting, surface conditioning and conversion are integrated at the normal temperature, so that operation is facilitated. The conversion solution is stable in performance and good in film forming performance. A layer of continuous and compact conversion film can be formed on the surface of an iron and steel base body after brush coating, and the corrosion resistance is excellent. The four-in-one brush coating chemical conversion solution is simple in manufacturing method, convenient to operate and high in practicality.

Description

technical field [0001] The invention belongs to the technical field of metal surface modification, in particular to a four-in-one brush coating chemical conversion liquid. Background technique [0002] Chemical conversion treatment has been used in the industrial field for a hundred years, and is widely used in the fields of automobile industry, household appliances, shipbuilding industry, aviation and weaponry. Chemical conversion coatings have multiple functions such as anti-corrosion, wear-resistant and friction-reducing, improving lubricity and adhesion between coatings and metal substrates, and play an important role in the surface protection treatment of steel, aluminum, magnesium, zinc and their alloys. Before the transformation of the traditional process, degreasing, rust removal and surface adjustment are required. The cumbersome process adds difficulty to the operation and control in actual production. The use of degreasing, rust removal, surface adjustment, and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/42C23G1/08C23G1/04
CPCC23C22/42C23G1/04C23G1/083
Inventor 吕宇鹏姜葱葱肖桂勇
Owner SHANDONG UNIV
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