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Metal cleaning fluid and cleaning method thereof

A metal cleaning and cleaning liquid technology, which is applied in the field of metal surface treatment, can solve problems such as secondary corrosion of metal copper materials, achieve the effects of reducing waste liquid discharge, reducing excessive erosion, and excellent corrosion resistance

Active Publication Date: 2019-09-17
SUZHOU CHAMPION COATING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if the rinse is thorough, the dissolved oxygen in the deionized water will cause secondary corrosion to the metal copper material during the hot air drying process

Method used

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  • Metal cleaning fluid and cleaning method thereof
  • Metal cleaning fluid and cleaning method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of cleaning solution: 80 parts of oxalic acid, 32 parts of citric acid, 53 parts of sodium dihydrogen phosphate, 18 parts of sodium pyrophosphate, 3 parts of tetrasodium iminodisuccinate, 0.5 parts of dopamine, 0.6 parts of agar, 90 parts of ethanol, with 820 1 part deionized water as solvent. Prepare the cleaning solution at a temperature of 75°C. After the preparation is completed, stir the cleaning solution quickly for 2 hours when the temperature of the cleaning solution drops to 25-28°C.

[0029] Chemical cleaning treatment: Take the metal copper plate with natural corrosion products on the surface and hang it on one end of the ultrasonic vibration head, then immerse the metal copper plate in the cleaning solution, keep the temperature of the cleaning solution at 25°C, turn on the ultrasonic vibration head vibration frequency of 100kHz, and clean for 15 minutes.

[0030] Freeze-drying: Take the metal copper plate out of the cleaning solution and remove ...

Embodiment 2

[0033] Preparation of cleaning solution: 120 parts of oxalic acid, 43 parts of citric acid, 62 parts of sodium dihydrogen phosphate, 20 parts of sodium pyrophosphate, 3.5 parts of tetrasodium iminodisuccinate, 0.6 parts of dopamine, 0.9 parts of agar, 105 parts of ethanol, and 850 parts 1 part deionized water as solvent. Prepare the cleaning solution at a temperature of 75°C. After the preparation is completed, stir the cleaning solution quickly for 3 hours when the temperature of the cleaning solution drops to 25-28°C.

[0034] Chemical cleaning treatment: Take the metal copper plate with natural corrosion products on the surface and hang it on one end of the ultrasonic vibration head, then immerse the metal copper plate in the cleaning solution, maintain the temperature of the cleaning solution at 35°C, turn on the ultrasonic vibration head vibration frequency of 100kHz, and clean for 20 minutes.

[0035] Freeze-drying: Take the metal copper plate out of the cleaning solutio...

Embodiment 3

[0038] Preparation of cleaning solution: 80 parts of oxalic acid, 32 parts of citric acid, 53 parts of sodium dihydrogen phosphate, 18 parts of sodium pyrophosphate, 3 parts of tetrasodium iminodisuccinate, 0.5 parts of dopamine, 0.6 parts of agar, 90 parts of ethanol, with 820 1 part deionized water as solvent. Prepare the cleaning solution at a temperature of 75°C. After the preparation is completed, stir the cleaning solution quickly for 2 hours when the temperature of the cleaning solution drops to 25-28°C.

[0039] Chemical cleaning treatment: Take the metal copper plate with natural corrosion products on the surface and hang it on one end of the ultrasonic vibration head, then immerse the metal copper plate in the cleaning solution, keep the temperature of the cleaning solution at 25°C, turn on the ultrasonic vibration head vibration frequency of 100kHz, and clean for 15 minutes.

[0040] Freeze-drying: Take the metal copper plate out of the cleaning solution and remove ...

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Abstract

The invention discloses a metal cleaning fluid which is used for cleaning stains and corrosion layers on the surface of metal copper. The metal cleaning fluid is characterized by comprising 60-170 parts of oxalic acid, 28-80 parts of citric acid, 45-78 parts of sodium dihydrogen phosphate, 16-48 parts of sodium pyrophosphate, 2-5 parts of tetrasodium iminodisuccinate, 0.3-1.2 parts of dopamine, 0.4-1.8 parts of agar, 110-195 parts of ethanol and 785-950 parts of water. The invention also discloses a cleaning method of the cleaning fluid. The cleaning method comprises the following steps of, S1, preparing the cleaning liquid; S2, carrying out chemical cleaning treatment; S3, carrying out freeze drying; and S4, carrying out injection of high-pressure gas. According to the cleaning fluid and the cleaning method thereof, the surface stains and corrosion products of metal copper materials can be effectively cleaned; and meanwhile, secondary erosion or secondary oxidation corrosion in the final drying process is effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and relates to a metal surface cleaning liquid and a cleaning method thereof. Background technique [0002] Metal copper has good electrical conductivity, thermal conductivity, welding and plastic processing properties, and is widely used in electrical and electronic, light industry, machinery manufacturing, defense industry and other fields. In the atmospheric environment, copper is prone to chemical reactions with environmental media, and copper corrosion occurs. Generally speaking, the corrosion products of copper are mainly copper oxides, hydroxides, and basic carbonates. These corrosion products adhere to the surface of metal copper, which will greatly deteriorate its electrical, thermal and welding properties. In addition, the texture of copper is relatively soft. In industrial applications, different types of coatings are often plated on its surface to increase its hardne...

Claims

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Application Information

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IPC IPC(8): C23G1/06C23G1/10C23G3/00
CPCC23G1/06C23G1/103C23G3/00
Inventor 陈君乐务时
Owner SUZHOU CHAMPION COATING TECH
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