WO2017161580A1 - Agent de gravure alcaline pour matériau d'aluminium et procédé de prétraitement de gravure alcaline pour matériau d'aluminium - Google Patents

Agent de gravure alcaline pour matériau d'aluminium et procédé de prétraitement de gravure alcaline pour matériau d'aluminium Download PDF

Info

Publication number
WO2017161580A1
WO2017161580A1 PCT/CN2016/077418 CN2016077418W WO2017161580A1 WO 2017161580 A1 WO2017161580 A1 WO 2017161580A1 CN 2016077418 W CN2016077418 W CN 2016077418W WO 2017161580 A1 WO2017161580 A1 WO 2017161580A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
aluminum
parts
alkali
sodium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/077418
Other languages
English (en)
Chinese (zh)
Inventor
王饶玲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Hengzhaozhi Technology Co Ltd
Original Assignee
Shenzhen Hengzhaozhi Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Hengzhaozhi Technology Co Ltd filed Critical Shenzhen Hengzhaozhi Technology Co Ltd
Priority to PCT/CN2016/077418 priority Critical patent/WO2017161580A1/fr
Publication of WO2017161580A1 publication Critical patent/WO2017161580A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/32—Alkaline compositions
    • C23F1/36—Alkaline compositions for etching aluminium or alloys thereof

Definitions

  • the present invention relates to the technical field of metal surface treatment, and in particular to an aluminum alkali etchant and an aluminum alkali pretreatment method.
  • the surface treatment technology of the workpiece is usually applied.
  • the surface treatment of aluminum, iron and their alloys goes deep into all walks of life.
  • aluminum is usually anodized, or painted, etc.
  • the surface of the aluminum is usually pretreated, such as degreasing, degreasing, and alkali etching, prior to these surface treatments.
  • alkali etching treatment as an example, after the etching treatment, a uniform decorative appearance is produced on the surface of the aluminum workpiece. Mild defects such as roll marks, stretch marks, scratches, and scratches are often removed.
  • the conventional alkali etching agent is usually made of sodium carbonate, sodium sulfate, sodium nitrate or the like, and is supplemented with other additive components.
  • the corrosion effect of these alkali etchants is insufficient, and the degree of corrosion is difficult to control, which is not conducive to monitoring the alkali corrosion effect with the ruthenium, resulting in poor reliability of alkali corrosion quality and inconsistent effects.
  • Sodium hydroxide alone is prone to excessive corrosion, many fumes, and the bath is susceptible to aging.
  • an aluminum alkali etchant and an aluminum alkali etch pretreatment method are provided, which have a good alkali corrosion effect and are easy to control the alkali corrosion effect and have a long service life of the bath.
  • An aluminum alkali etchant for alkali etching pretreatment before surface treatment of aluminum comprising component A and component B, said component B being a solid base, said component A comprising the following Parts by weight: 250-500 parts of sorbitol solution, 20-25 parts of sodium thiosulfate, 10-20 parts of sodium nitrite, 15-30 parts of sodium tripolyphosphate, 25-50 parts of sodium gluconate, 180 -300 parts of water
  • an aluminum alkali etching pretreatment method comprising the steps of: formulating the component A in the aluminum alkali etchant as described above; adding the component A to the alkali etching tank, and then adding the group B Parts, formulated as an aluminum alkali solution
  • the aluminum material is immersed in the bath to control the mass content of the free base in the solution to be 50-80 g/L, the temperature is 40-7 0 ° C, and the treatment is for 2-20 minutes.
  • the A component includes a plurality of components, wherein the sorbitol liquid and the sulfur Sodium sulfate is the main complexing agent, and sodium tripolyphosphate and sodium gluconate make the complexation more uniform. Since the A component and the B component are separated from each other, the desired component can be added with the hydrazine to control the alkali etching effect, and the use is more convenient and effective.
  • the present embodiment provides an aluminum alkali etchant for alkali etching pretreatment before surface treatment of aluminum, which comprises component A and component B, the component B is a solid base, and the A
  • the components include the following parts by weight: 250-500 parts of sorbitol solution, 20-25 parts of sodium thiosulfate, 10-20 parts of sodium nitrite, 15-30 parts of sodium tripolyphosphate, 25-50 parts of glucose Sodium, 180-300 parts water.
  • the component A further includes 1-2 parts of sodium fluoride and 1.5-3 parts of alkaloid.
  • the sodium thiosulfate is preferably in the range of 30-40 parts by weight.
  • the sorbitol liquid preferably has a weight fraction of 300 to 400.
  • the parts by weight of the sodium nitrite are preferably 12-15.
  • the sodium tripolyphosphate is preferably 15-20 parts by weight, the sodium gluconate is preferably 30-40 parts by weight, and the water is preferably 200-250 parts by weight.
  • the weight ratio of component B to component A is preferably 5-10:1, more preferably 6-8:1.
  • sorbitol liquid and sodium thiosulfate are the main complexing agents, sodium tripolyphosphate and sodium gluconate make the complexation more uniform, sodium fluoride is an auxiliary agent, and the complexing speed is increased, and the alkalinity is adjusted.
  • the role of the PH value is the main complexing agents.
  • Another aspect of the present embodiment provides an aluminum alkali etching pretreatment method comprising the steps of: formulating the component A in the aluminum alkali etchant as described above; adding the component A to the alkali etching tank Then, adding component B, preparing aluminum alkali etchant solution, immersing the aluminum material in the bath liquid, controlling the mass content of the free base in the solution to be 50-80 g / L, the temperature is 40-70 ° C, treatment 2 -20 minutes.
  • the free alkali content and the aluminum content of the solution in the tank are monitored, and the monitoring method is as follows: 5 ml of the bath liquid sample is taken from the alkali etching tank, diluted with water 100 ml, and then added with a few drops of phenolphthalein indication Agent, then The mixture was titrated with 0.05 mol/L hydrochloric acid until the color changed from red to colorless, and the consumed hydrochloric acid was recorded as a milliliter; then the neutralized sample was immediately added to 5 g of solid NaF, after adding new NaF. If the solution does not change red within 1 minute, the titration reaction is completed, and the acid consumed is b ml.
  • Effective corrosion alkali amount 1.33 (3a- b) g/L
  • dissolved aluminum bg / L.
  • the amount of alkali added in this embodiment that is, the component B and the amount of component A are determined according to the content of aluminum, and the content of aluminum is in a different range, and the total amount of free alkali and the total amount of component A should be The following table is as follows.
  • the component B i.e., alkali
  • the component B is added in an amount such that the ratio of the added weight of the component B in the bath to the weight of the component A is 5-10:1.
  • the aluminum material is degreased and degreased before being subjected to alkali etching, and then washed with water. After re-alkaline treatment, rinse with water, dry, and set aside.
  • the aluminum alkali etchant of the present embodiment is widely used in the aluminum processing industry to pretreat the surface of the aluminum material to form a desired effect, and to remove some defects of the surface of the aluminum material, such as mild defects. Roll marks, stretch marks, scratches, scratches, etc. are often removed. Matte-free alkali etching is suitable for almost all rolled, stretched, molded and extruded aluminum parts, except for silicon-rich cast aluminum alloys.
  • Embodiment 1 [0017] The ingredients are first mixed according to the following parts by weight: 250 parts of sorbitol solution, 20 parts of sodium thiosulfate, 10 parts of sodium nitrite, 1 part of sodium fluoride, 1.5 parts of betaine, 15 parts of sodium tripolyphosphate 25 parts of sodium gluconate, stirred, mixed evenly, 180 parts of water to form component A, and then prepare component B.
  • aluminum alkali etching pretreatment method 6g / l A component is added into the alkali etching tank, and then added 60g / l B component, formulated into an aluminum alkali etching agent solution, the aluminum material is immersed in the bath , Temperature is about 50 ° C, treatment for 10 minutes, removal, water rinsing, nitric acid light out (Note: The nitric acid is emitted by immersing the profile in a 10% nitric acid solution for one minute to remove impurities and black ash on the surface of the profile) , rinsed with water, dried, ready for subsequent surface treatment
  • the components are first mixed according to the following parts by weight: 350 parts of sorbitol solution, 22 parts of sodium thiosulfate, 12 parts of sodium nitrite, 1.2 parts of sodium fluoride, 2 parts of pearline, 20 parts of sodium tripolyphosphate 35 parts of sodium gluconate, stirred, evenly mixed, 220 parts of water to form component A.
  • Aluminum alkali etching pretreatment method 6.5g / l A component is added into the alkali etching tank, and then added 65g / l B component, formulated into an aluminum alkali etching agent solution, the aluminum material is immersed in the bath The temperature is about 50 ° C, treated for 10 minutes, taken out, rinsed with water, lighted with nitric acid, rinsed with water, and dried for subsequent surface treatment.
  • the appearance of the sand surface is formed on the surface of the aluminum material, and it is found that the surface of the aluminum material is uniformly corroded, no pitting or corrosion is observed, and the gas during the corrosion process is also greatly reduced, even if the bath liquid is long. It is still active, aluminum can still work up to 140g/l, and the inside of the tank is not easy to crystallize.
  • the ingredients are first mixed according to the following parts by weight: 400 parts of sorbitol solution, 23 parts of sodium thiosulfate, 15 parts of sodium nitrite, 1.5 parts of sodium fluoride, 1.5 parts of pearline, 25 parts of sodium tripolyphosphate 40 parts of sodium gluconate, stirred, evenly mixed, 260 parts of water to form component A.
  • Aluminum alkali etching pretreatment method 7g / l A component is added into the alkali etching tank, and then 70g / l B component is added to prepare an aluminum alkali etching agent solution, and the aluminum material is immersed in the bath liquid. The temperature is about 50 ° C, treated for 15 minutes, taken out, rinsed with water, lighted with nitric acid, rinsed with water, dried, ready for subsequent surface treatment. [0027] After the above treatment, the appearance of the sand surface is formed on the surface of the aluminum material, and it is found that the surface of the aluminum material is uniformly corroded, no pitting or corrosion is observed, and the gas during the corrosion process is also greatly reduced, even if the bath liquid is long. It is still active, aluminum can still work up to 140g/l, and the inside of the tank is not easy to crystallize.
  • the ingredients are first mixed according to the following parts by weight: 450 parts of sorbitol solution, 24 parts of sodium thiosulfate, 18 parts of sodium nitrite, 1.8 parts of sodium fluoride, 2 parts of pearline, 30 parts of sodium tripolyphosphate 45 parts of sodium gluconate, stirred, evenly mixed, 280 parts of water to form component A.
  • Aluminum alkali etching pretreatment method 7.5g / l A component is added into the alkali etching tank, and then 75g / l B component is added to prepare an aluminum alkali etching agent solution, and the aluminum material is immersed in the bath liquid.
  • the temperature is about 50 ° C, treated for 15 minutes, taken out, rinsed with water, lighted with nitric acid, rinsed with water, and dried for subsequent surface treatment.
  • the appearance of the sand surface is formed on the surface of the aluminum material, and it is found that the surface of the aluminum material is uniformly corroded, no pitting or corrosion is observed, and the gas during the corrosion process is also greatly reduced, even if the bath liquid is long. It is still active, aluminum can still work up to 140g/l, and the inside of the tank is not easy to crystallize.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

La présente invention concerne un agent de gravure alcaline pour un matériau d'aluminium, qui est utilisé pour un prétraitement de gravure alcaline avant un traitement de surface d'un matériau d'aluminium, et qui comprend un composant A et un composant B. Le composant B est une base solide. Le composant A comprend les composants suivants en parties en poids : 250 à 500 parties de sorbitol, 20 à 25 parties de thiosulfate de sodium, 10 à 20 parties de nitrite de sodium, 15 à 30 parties de tripolyphosphate de sodium, 25 à 50 parties de gluconate de sodium, et 180 à 300 parties d'eau. L'invention concerne également un procédé de prétraitement de gravure alcaline pour un matériau en aluminium.
PCT/CN2016/077418 2016-03-25 2016-03-25 Agent de gravure alcaline pour matériau d'aluminium et procédé de prétraitement de gravure alcaline pour matériau d'aluminium Ceased WO2017161580A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/077418 WO2017161580A1 (fr) 2016-03-25 2016-03-25 Agent de gravure alcaline pour matériau d'aluminium et procédé de prétraitement de gravure alcaline pour matériau d'aluminium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/077418 WO2017161580A1 (fr) 2016-03-25 2016-03-25 Agent de gravure alcaline pour matériau d'aluminium et procédé de prétraitement de gravure alcaline pour matériau d'aluminium

Publications (1)

Publication Number Publication Date
WO2017161580A1 true WO2017161580A1 (fr) 2017-09-28

Family

ID=59900951

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/077418 Ceased WO2017161580A1 (fr) 2016-03-25 2016-03-25 Agent de gravure alcaline pour matériau d'aluminium et procédé de prétraitement de gravure alcaline pour matériau d'aluminium

Country Status (1)

Country Link
WO (1) WO2017161580A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230066680A (ko) * 2021-11-08 2023-05-16 박성수 시트용 금형 및 그 도금 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101676439A (zh) * 2008-09-18 2010-03-24 浙江帝龙新材料股份有限公司 铝带材连续阳极氧化自动生产线
CN103952741A (zh) * 2014-04-17 2014-07-30 佛山市三水雄鹰铝表面技术创新中心有限公司 铝合金阳极氧化线处理工艺
CN104313582A (zh) * 2014-10-31 2015-01-28 湖州织里天荣铝材添加剂厂 一种新型铝合金碱蚀添加剂及其制备方法
CN104451818A (zh) * 2014-11-17 2015-03-25 中国人民解放军空军工程大学 一种绝缘金属板及其制作方法
CN104962920A (zh) * 2015-07-27 2015-10-07 马鞍山市华冶铝业有限责任公司 一种铝型材碱蚀液及其制备方法、应用和应用方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101676439A (zh) * 2008-09-18 2010-03-24 浙江帝龙新材料股份有限公司 铝带材连续阳极氧化自动生产线
CN103952741A (zh) * 2014-04-17 2014-07-30 佛山市三水雄鹰铝表面技术创新中心有限公司 铝合金阳极氧化线处理工艺
CN104313582A (zh) * 2014-10-31 2015-01-28 湖州织里天荣铝材添加剂厂 一种新型铝合金碱蚀添加剂及其制备方法
CN104451818A (zh) * 2014-11-17 2015-03-25 中国人民解放军空军工程大学 一种绝缘金属板及其制作方法
CN104962920A (zh) * 2015-07-27 2015-10-07 马鞍山市华冶铝业有限责任公司 一种铝型材碱蚀液及其制备方法、应用和应用方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"jian3shi2cao2ye4ge4wan4fenlce4ding4", ESSENTIALS OF ALUMINIUM PROFILE INDUSTRY IS 09000 FILES, 31 January 2004 (2004-01-31), pages 207 - 208 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230066680A (ko) * 2021-11-08 2023-05-16 박성수 시트용 금형 및 그 도금 방법
KR102610278B1 (ko) * 2021-11-08 2023-12-04 박성수 시트용 금형 및 그 도금 방법

Similar Documents

Publication Publication Date Title
US4009115A (en) Composition and method for cleaning aluminum at low temperatures
HU176364B (en) Aequous coating solutions of acidic reaction for aluminium surfaces
USRE32661E (en) Cleaning aluminum at low temperatures
TW554020B (en) Magnesium conversion coating composition and method of using same
CA2784150C (fr) Procede de pretraitement de l'aluminium et nettoyant a haut pouvoir d'attaque chimique, qui est utilise dans ce procede
US2650156A (en) Surface finishing of aluminum and its alloys
CN110257838B (zh) 铝型材喷粉前处理工艺
US2671717A (en) Chemical brightening of aluminum
US20150354078A1 (en) Method for forming film on aluminum or aluminum alloy, pretreatment liquid therefor, and product thereof
WO2017161580A1 (fr) Agent de gravure alcaline pour matériau d'aluminium et procédé de prétraitement de gravure alcaline pour matériau d'aluminium
US2154455A (en) Cadmium bright dip
US2288007A (en) Corrosion resistant film on zinc
US5462634A (en) Surface-treated aluminum material and method for its surface treatment
US2628925A (en) Bright corrosion resistant coating of metals
US2795518A (en) Process for treating steel, zinc, and aluminum to increase corrosion resistance
US3725138A (en) Production of synthetic patina
JP7307815B2 (ja) 色測定を含むアルミニウム合金製の平らな製品の表面処理
WO2018006276A1 (fr) Agent de gravure alcalin de longue durée et matériau d'aluminium et son procédé de prétraitement par gravure alcaline
CN112593221A (zh) 一种抗氧化的铝合金表面处理剂
CN110541168B (zh) 镍去除剂和镍去除方法
US2851386A (en) Method for coating zinc and zinc alloy sheets
US2041331A (en) Method of treating magnesium articles
JP2684472B2 (ja) 表面処理アルミニウム材料およびその処理方法
CN119776837B (zh) 一种抛光剂及抛光方法
US3301719A (en) Chemical conversion coating for magnesium

Legal Events

Date Code Title Description
NENP Non-entry into the national phase

Ref country code: DE

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16894933

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 16894933

Country of ref document: EP

Kind code of ref document: A1