Novel'three-in-one 'aluminum alloy degreaser and treatment process

Abstract

The invention discloses a novel'three-in-one 'aluminum alloy degreasing agent and a treatment process. The degreasing agent comprises the following components: 30-50 g / L of an oxidizing agent, 3-10 g / L of an auxiliary agent, 2-10 g / L of an accelerator, 1-10 g / L of a corrosion inhibitor, 0.1-5 g / L of a surfactant and 0.1-3 g / L of a solubilizer. The oxidizing agent comprises at least one of sulfuric acid, phosphoric acid and glacial acetic acid; the auxiliary agent comprises at least one of sodium nitrate and ferric nitrate; the accelerator is at least one of ammonium bifluoride, ammonium chloride and ammonium sulfate; the corrosion inhibitor is at least one of citric acid, sodium stearate and urea; the surfactant comprises at least one of sodium hydroxy propyl sulfonate, sodium dodecyl benzene sulfonate and OP-10; the solubilizer comprises at least one of propylene glycol, alkyl amide and isopropanol. The method has the advantages of being simple in treatment procedure, easy to operate, good in oil removal effect, environmentally friendly and the like, can meet industrial production requirements and has wide application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of metal surface treatment, and in particular to a novel "three-in-one" aluminum alloy degreasing agent and a treatment process. Background Art

[0002] Aluminum alloy has good physical and chemical properties, plays an important role in many fields, and is an indispensable material for the development of modern society. The surface treatment process of aluminum alloy is a key link to ensure the performance, aesthetics and sustainable use of aluminum alloy materials. It is of great significance to improve the quality of aluminum alloy, extend its service life and promote sustainable development. Generally, aluminum alloys can adopt corresponding surface treatment technologies under different service conditions, such as passivation treatment, coloring treatment, spraying treatment, etc. The above treatment processes all require pretreatment of aluminum alloys. At present, the traditional aluminum alloy pretreatment process mainly includes degreasing, alkali etching, and lightening processes. The process is complicated and the steps are cumbersome. And hydrofluoric acid is usually used as the main component of the treatment. This substance is extremely corrosive and poses a great threat to the human body and the environment, which violates the "Green China" strategy. The invention patent number is 201710287447.5, which discloses a pretreatment liquid and a pretreatment method for improving the corrosion resistance of aluminum alloys. Although the formula does not contain hydrofluoric acid and the degreasing effect is good, the treatment process is relatively cumbersome and includes degreasing-alkali etching-acid etching and other treatment steps. The invention patent number 201480002140.0 discloses a surface treatment method for aluminum alloys. After degreasing, etching and other processes, a high-gloss surface can be obtained, but its process flow is complicated and involves operations such as heating, which makes it difficult to be widely promoted in engineering. The invention patent number 202010771629.1 discloses a pretreatment agent for aluminum alloy workpieces and its preparation method, which realizes the integration of degreasing, glossing and passivation processes. However, the preparation of the treatment liquid must be done in a fixed order and is time-consuming, which cannot improve the treatment efficiency.

[0003] Therefore, a three-in-one degreasing pretreatment process that integrates degreasing, alkali etching, and polishing processes came into being. The three-in-one degreasing pretreatment process not only improves the processing efficiency and quality, but also reduces production costs and environmental impacts, meeting the production needs of modern industry. However, the traditional three-in-one degreasing pretreatment still has defects: First, incomplete degreasing can easily lead to obvious spots on the surface of aluminum; second, aluminum materials with complex alloy components are prone to form gray-yellow attachments on the surface after treatment; third, the brightness of aluminum materials after treatment does not meet the standards; fourth, the cost consumption is relatively high. Therefore, the development of a green, environmentally friendly, simple process, and good treatment effect aluminum alloy degreasing formula and treatment process is an application problem that needs to be solved urgently in current industrial production. Summary of the invention

[0004] The purpose of the present invention is to provide a novel aluminum alloy degreasing agent and treatment process which has the advantages of simple treatment process, easy operation, environmental friendliness and good degreasing and cleaning effect and combines degreasing, alkali etching and polishing processes into one.

[0005] The technical solution of the present invention is as follows: the sample should be subjected to the following operations: water washing - three-in-one treatment - water washing - drying

[0006] Step 1: Prepare a new "three-in-one" aluminum alloy degreasing agent, the components and contents of the degreasing agent are: oxidant 30-50g / L, auxiliary agent 3-10g / L, accelerator 2-10g / L, corrosion inhibitor 1-10g / L, surfactant 0.1-5g / L, solubilizer 0.1-3g / L. Add each component to a corrosion-resistant container, the balance is water, and stir evenly to obtain a new "three-in-one" aluminum alloy degreasing agent.

[0007] The oxidant comprises at least one of sulfuric acid, phosphoric acid and glacial acetic acid, preferably a mixture of sulfuric acid, phosphoric acid and glacial acetic acid, and the addition ratio thereof is 1-10:1-5:1-3;

[0008] The auxiliary agent includes at least one of sodium nitrate and ferric nitrate, preferably a mixture of sodium nitrate and ferric nitrate, and the addition ratio is 1-5:1-3;

[0009] The accelerator is at least one of ammonium bifluoride, ammonium chloride and ammonium sulfate, preferably a mixture of ammonium bifluoride, ammonium chloride and ammonium sulfate, and the addition ratio is 1-3:1-5:1-4;

[0010] The corrosion inhibitor is at least one of citric acid, sodium stearate and urea, preferably a mixture of citric acid, sodium stearate and urea, and the addition ratio is 1-5:1-4:1-3;

[0011] The surfactant includes at least one of sodium hydroxypropyl sulfonate, sodium dodecylbenzene sulfonate and OP-10, preferably a mixture of sodium hydroxypropyl sulfonate, sodium dodecylbenzene sulfonate and OP-10, and the addition ratio is 1-2:1-4:1-3.

[0012] The solubilizer includes at least one of propylene glycol, alkyl amide, and isopropanol, preferably a mixture of propylene glycol, alkyl amide, and isopropanol, and the addition ratio is 1-8:1-5:1-6;

[0013] Step 2: Immerse the aluminum alloy workpiece to be treated in the degreasing agent at room temperature and take it out after 15-150 seconds.

[0014] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0015] The method uses a new type of "three-in-one" aluminum alloy degreasing agent configured in advance to perform surface treatment on an aluminum alloy workpiece to be degreased.

[0016] The design concept of the present invention is: a good degreasing effect can be achieved through the synergistic effect of the oxidant, adjuvant, accelerator, corrosion inhibitor, surfactant and solubilizer in the degreasing agent. At the same time, the new "three-in-one" aluminum alloy degreasing agent can well overcome the shortcomings of ordinary "three-in-one" aluminum alloy degreasing treatment.

[0017] The oxidant plays a major role in the degreasing agent, which can dissolve and peel off the natural oxide film formed on the surface of aluminum and aluminum alloy; the exposed aluminum alloy matrix reacts with the oxidant to activate the aluminum surface.

[0018] The role of the auxiliary agent is to assist the oxidant to achieve a good oil removal effect, which is mainly achieved by enhancing the oxidizing property of the oxidant through the ionized ions.

[0019] The added accelerator can accelerate the dissolution of the oxide film on the surface of the aluminum alloy, eliminate or reduce extrusion die marks and other defects, and make the surface of the aluminum profile smooth, smooth and uniform.

[0020] The added corrosion inhibitor can moderately inhibit aluminum corrosion during the process and reduce aluminum consumption. The corrosion inhibitor can form a relatively complete protective film on the surface of the aluminum alloy to prevent excessive corrosion of the aluminum alloy surface.

[0021] The added surfactant has the following functions: 1. Decomposing grease, breaking down oil into smaller molecules and promoting oil removal; 2. Increasing surface tension, making it easier for it to contact the oily surface.

[0022] The added solubilizer has the following functions: 1. To increase the viscosity of the solution and regulate the fluidity of the solution to enhance the oil removal effect; 2. To promote the mutual dissolution of organic matter and aqueous solution system, which is conducive to forming a uniform system.

[0023] The advantages and beneficial effects of the present invention are:

[0024] 1. The degreasing agent of the present invention can effectively solve the problems of spots and attachments, and has a good degreasing effect and high cleaning efficiency, which is in line with the "Green China" strategy. The treated metal surface is clean and has a certain brightness;

[0025] 2. The present invention provides a novel "three-in-one" aluminum alloy degreasing agent and treatment process, which is simple to operate, and the amount of chemicals involved in the process flow is relatively small and the price is relatively low, and the water consumption is greatly reduced, which saves resources and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is the morphology of the aluminum alloy after degreasing treatment in Example 1;

[0027] Figure 2 This is the morphology of the aluminum alloy after degreasing treatment in Example 2;

[0028] Figure 3 This is the morphology of the aluminum alloy after degreasing treatment in Example 3;

[0029] Figure 4 This is the morphology of the aluminum alloy after degreasing treatment in Example 4;

[0030] Figure 5 This is the morphology of the aluminum alloy after degreasing treatment in Example 5;

[0031] Figure 6 This is the morphology of the aluminum alloy after degreasing treatment in Example 6;

[0032] Figure 7 This is the morphology of the aluminum alloy after degreasing treatment in Example 7;

[0033] Figure 8 This is the morphology of the aluminum alloy after degreasing treatment in Comparative Example 1;

[0034] Fig. 9 This is the morphology of the aluminum alloy after chemical polishing treatment in Comparative Example 2;

[0035] Fig.10 This is the morphology of the aluminum alloy after chemical polishing treatment in Comparative Example 3; DETAILED DESCRIPTION

[0036] Example 1

[0037] The specific steps are as follows:

[0038] Step 1: Prepare a new "three-in-one" aluminum alloy degreaser, the components and contents of the degreaser are as follows: oxidant: sulfuric acid 10g / L, phosphoric acid 10g / L, glacial acetic acid 10g / L; auxiliary agent: sodium nitrate 5g / L, ferric nitrate 5g / L; accelerator: ammonium bifluoride 0.6g / L, ammonium chloride 1g / L, ammonium sulfate 0.8g / L; corrosion inhibitor: citric acid 1g / L, sodium stearate 1g / L, urea 1g / L; surfactant: sodium hydroxypropyl sulfonate 1g / L, sodium dodecylbenzene sulfonate 2g / L, OP-101.5g / L; solubilizer: propylene glycol 1g / L, alkylamide 1g / L, isopropanol 1g / L. Add each component to a corrosion-resistant container, the balance is water, stir evenly, and get the "three-in-one" aluminum alloy degreaser.

[0039] Step 2: Immerse the aluminum alloy workpiece to be treated in a degreasing agent at room temperature and take it out after 30 seconds.

[0040] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0041] Example 2

[0042] The specific steps are as follows:

[0043] Step 1: Prepare a new "three-in-one" aluminum alloy degreaser, the components and contents of the degreaser are as follows: oxidant: sulfuric acid 20g / L, phosphoric acid 10g / L, glacial acetic acid 6g / L; auxiliary agent: sodium nitrate 2g / L, ferric nitrate 3g / L; accelerator: ammonium bifluoride 1g / L, ammonium chloride 1g / L, ammonium sulfate 1g / L; corrosion inhibitor: citric acid 0.5g / L, sodium stearate 0.4g / L, urea 0.3g / L; surfactant: sodium hydroxypropyl sulfonate 1g / L, sodium dodecylbenzene sulfonate 3g / L, OP-101g / L; solubilizer: propylene glycol 0.8g / L, alkylamide 0.5g / L, isopropanol 0.6g / L. Add each component to a corrosion-resistant container, the balance is water, stir evenly, and get the "three-in-one" aluminum alloy degreaser.

[0044] Step 2: Immerse the aluminum alloy workpiece to be treated in the degreasing agent at room temperature and take it out after 15 seconds.

[0045] Step 3: Put the aluminum alloy workpiece into water for cleaning and then dry. After mixing, the "three-in-one" aluminum alloy degreasing agent is obtained.

[0046] Example 3

[0047] The specific steps are as follows:

[0048] Step 1: Prepare a new "three-in-one" aluminum alloy degreaser, the components and contents of the degreaser are as follows: oxidant: 40g / L sulfuric acid, 8g / L glacial acetic acid; auxiliary agent: 5g / L sodium nitrate, 3g / L ferric nitrate; accelerator: 1g / L ammonium bifluoride, 5g / L ammonium chloride, 4g / L ammonium sulfate; corrosion inhibitor: 1g / L citric acid; surfactant: 1g / L sodium hydroxypropyl sulfonate, 0.5g / L sodium dodecylbenzene sulfonate; solubilizer: 0.5g / L propylene glycol, 1g / L alkylamide. Add each component to a corrosion-resistant container, with the remainder being water, and stir evenly to obtain the "three-in-one" aluminum alloy degreaser.

[0049] Step 2: Immerse the aluminum alloy workpiece to be treated in a degreasing agent at room temperature and take it out after 60 seconds.

[0050] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0051] Example 4

[0052] The specific steps are as follows:

[0053] Step 1: Prepare a new "three-in-one" aluminum alloy degreaser, the components and contents of the degreaser are as follows: oxidant: 30g / L sulfuric acid, 20g / L phosphoric acid; auxiliary agent: 3g / L sodium nitrate; accelerator: 3g / L ammonium bifluoride, 3g / L ammonium chloride, 3g / L ammonium sulfate; corrosion inhibitor: 3g / L citric acid, 4g / L sodium stearate, 3g / L urea; surfactant: 0.5g / L sodium hydroxypropyl sulfonate, 0.3g / L OP-10; solubilizer: 1g / L propylene glycol, 0.5g / L alkylamide. Add each component to a corrosion-resistant container, with the remainder being water, and stir evenly to obtain the "three-in-one" aluminum alloy degreaser.

[0054] Step 2: Immerse the aluminum alloy workpiece to be treated in a degreasing agent at room temperature and take it out after 150 seconds.

[0055] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0056] Example 5

[0057] The specific steps are as follows:

[0058] Step 1: Prepare a new "three-in-one" aluminum alloy degreaser. The components and contents of the degreaser are as follows: oxidant: 10g / L sulfuric acid, 25g / L phosphoric acid, 15g / L glacial acetic acid; auxiliary agent: 5g / L ferric nitrate; accelerator: 1g / L ammonium bifluoride, 1g / L ammonium chloride; corrosion inhibitor: 3g / L citric acid, 3g / L sodium stearate, 3g / L urea; surfactant: 0.1g / L sodium hydroxypropyl sulfonate; solubilizer: 0.5g / L propylene glycol, 1g / L isopropyl alcohol. Add the components to a corrosion-resistant container, with the remainder being water, and stir evenly to obtain the "three-in-one" aluminum alloy degreaser.

[0059] Step 2: Immerse the aluminum alloy workpiece to be treated in a degreasing agent at room temperature and take it out after 30 seconds.

[0060] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0061] Example 6

[0062] The specific steps are as follows:

[0063] Step 1: Prepare a new "three-in-one" aluminum alloy degreasing agent, the components and contents of the degreasing agent are as follows: oxidant: sulfuric acid 40g / L; auxiliary agent: sodium nitrate 3g / L, ferric nitrate 3g / L; accelerator: ammonium bifluoride 1g / L, ammonium sulfate 4g / L; corrosion inhibitor: citric acid 5g / L, urea 3g / L; surfactant: sodium dodecylbenzene sulfonate 1g / L; solubilizer: alkylamide 0.2g / L, isopropanol 1.2g / L. Add each component to a corrosion-resistant container, with the remainder being water, and stir evenly to obtain the "three-in-one" aluminum alloy degreasing agent.

[0064] Step 2: Immerse the aluminum alloy workpiece to be treated in a degreasing agent at room temperature and take it out after 90 seconds.

[0065] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0066] Example 7

[0067] The specific steps are as follows:

[0068] Step 1: Prepare a new "three-in-one" aluminum alloy degreaser, the components and contents of the degreaser are as follows: oxidant: 30g / L sulfuric acid, 15g / L phosphoric acid; auxiliary agent: 5g / L sodium nitrate, 5g / L ferric nitrate; accelerator: 5g / L ammonium bifluoride; corrosion inhibitor: 5g / L citric acid, 4g / L sodium stearate; surfactant: 1g / L sodium hydroxypropyl sulfonate, 1g / L sodium dodecylbenzene sulfonate, 1g / L OP-10; solubilizer: 0.1g / L alkylamide. Add each component into a corrosion-resistant container, with the remainder being water, and stir evenly to obtain the "three-in-one" aluminum alloy degreaser.

[0069] Step 2: Immerse the aluminum alloy workpiece to be treated in a degreasing agent at room temperature and take it out after 30 seconds.

[0070] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0071] Comparative Example 1:

[0072] The specific steps are as follows:

[0073] Step 1: Prepare a traditional degreasing agent, degreasing agent components and content: sulfuric acid 150g / L. Add sulfuric acid and the balance water into a corrosion-resistant container and stir evenly.

[0074] Step 2: Immerse the aluminum alloy workpiece to be processed in the degreasing agent and take it out after 3 minutes.

[0075] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0076] Step 4: Prepare an alkaline etching solution, the components and content of which are: 50g / L sodium hydroxide. Add sodium hydroxide and the balance water into a corrosion-resistant container and stir evenly.

[0077] Step 5: Heat the alkaline etching solution to 50°C.

[0078] Step 6: Immerse the aluminum alloy workpiece to be treated in the alkaline etching solution and take it out after 3 minutes.

[0079] Step 7: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0080] Step 8: Prepare a traditional light emitting liquid, the composition of which is 200g / L sulfuric acid and the balance is water.

[0081] Step 9: Immerse the aluminum alloy workpiece to be processed in the polishing liquid at room temperature and take it out after 4 minutes.

[0082] Step 10: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0083] Comparative Example 2:

[0084] The specific steps are as follows:

[0085] Step 1: Prepare a new "three-in-one" aluminum alloy degreasing agent, the components and contents of the degreasing agent are as follows: oxidant: sulfuric acid 10g / L; auxiliary agent: sodium nitrate 2g / L; accelerator: ammonium bifluoride 1.5g / L; corrosion inhibitor: citric acid 0.5g / L, sodium stearate 0.3g / L; surfactant: sodium dodecylbenzene sulfonate 6g / L, OP-101g / L; solubilizer: propylene glycol 0.05g / L. Add each component to a corrosion-resistant container, with the remainder being water, and stir evenly to obtain the "three-in-one" aluminum alloy degreasing agent.

[0086] Step 2: Immerse the aluminum alloy workpiece to be treated in the degreasing agent at room temperature and take it out after 20 seconds.

[0087] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0088] Comparative Example 3:

[0089] The specific steps are as follows:

[0090] Step 1: Prepare a new "three-in-one" aluminum alloy degreaser, the components and contents of the degreaser are as follows: oxidant: sulfuric acid 1g / L, phosphoric acid 10g / L; auxiliary agent: sodium nitrate 1g / L, ferric nitrate 1g / L; accelerator: ammonium bifluoride 5g / L, ammonium chloride 5g / L, ammonium sulfate 4g / L; corrosion inhibitor: citric acid 5g / L, sodium stearate 6g / L; surfactant: sodium hydroxypropyl sulfonate 2g / L, sodium dodecylbenzene sulfonate 2g / L, OP-102g / L; solubilizer: alkyl amide 100g / L. Add each component into a corrosion-resistant container, with the balance being water, and stir evenly to obtain the "three-in-one" aluminum alloy degreaser.

[0091] Step 2: Immerse the aluminum alloy workpiece to be treated in a degreasing agent at room temperature and take it out after 200 seconds.

[0092] Step 3: Put the removed aluminum alloy workpiece into water, clean it and then dry it.

[0093] The degreasing performance of the chemical degreasing liquid of Examples 1-7 of the present invention was compared with that of Comparative Examples 1-3. A 6061 aluminum alloy of 25 mm × 25 mm × 2 mm was used as the experimental material, and the experimental material was treated by the treatment processes of the above-mentioned embodiments and comparative examples, respectively. After the test, the experimental material was subjected to the following tests:

[0094] (1) After the aluminum alloy workpiece is degreased, it is washed with water and the continuity of the water film is observed visually (it is acceptable if it is maintained for at least 30 seconds).

[0095] (2) Calculate the oil removal rate and corrosion rate of aluminum alloy workpieces.

[0096] Calculation of oil removal rate:

[0097]

[0098] Calculation of corrosion rate:

[0099]

[0100] Where, η-oil removal rate, %; v-corrosion rate, g / (m 2 ·h); m0-initial mass of clean test piece, g; m1-initial mass of oiled test piece, g; m2-mass of clean test piece after degreasing, g; m3-mass of oiled test piece after degreasing, g; A-surface area of ​​clean test piece, cm 2 ; t-test time, h.

[0101] (3) The aluminum alloy workpiece was tested using a NB300 series gloss meter at an angle of 60° to measure the gloss of the test material.

[0102] The test results are shown in Table 1.

[0103] Table 1

[0104]

[0105]

[0106] It can be seen from the above test results that all process water film continuity tests are qualified, and Examples 1-7 meet the corrosion rate of aluminum materials in industrial production ≤ 0.2g / (m 2 ·h) requirements, while Comparative Examples 1-3 cannot meet the requirements.

[0107] Compared with comparative examples 1-3, the treatment effects of Examples 1-7 of the present invention have higher oil removal rates, higher glossiness, and better oil removal effects.

[0108] In summary, the degreasing agent and treatment process of the present invention can achieve a superior degreasing effect to that of conventional degreasing agents and treatment processes, and has the advantages of simple treatment process, easy operation, and environmental friendliness, and can meet the needs of industrial production.

Claims

1. A new type of "three-in-one" aluminum alloy degreasing agent, characterized by: Oxidants, adjuvants, accelerators, corrosion inhibitors, surfactants, solubilizers.

2. The novel "three-in-one" aluminum alloy degreasing agent according to claim 1 is characterized in that: According to mass and volume, each liter of degreasing liquid contains 30-50g / L of oxidant, 3-10g / L of auxiliary agent, 2-10g / L of accelerator, 1-10g / L of corrosion inhibitor, 0.1-5g / L of surfactant, 0.1-3g / L of solubilizer, and the balance of water.

3. The novel "three-in-one" aluminum alloy degreasing agent according to claim 1 is characterized in that: The oxidant includes at least one of sulfuric acid, phosphoric acid, and glacial acetic acid; the auxiliary agent includes at least one of sodium nitrate and ferric nitrate; the accelerator is at least one of ammonium bifluoride, ammonium chloride, and ammonium sulfate; the corrosion inhibitor is at least one of citric acid, sodium stearate, and urea; the surfactant includes at least one of sodium hydroxypropyl sulfonate, sodium dodecylbenzene sulfonate, and OP-10; the solubilizer includes at least one of propylene glycol, alkylamide, and isopropanol.

4. The novel "three-in-one" aluminum alloy degreasing agent according to claim 1 is characterized in that: The oxidant is selected as a mixture of sulfuric acid, phosphoric acid and glacial acetic acid, and the addition ratio is 1-10:1-5:1-3; the auxiliary agent is selected as a mixture of sodium nitrate and ferric nitrate, and the addition ratio is 1-5:1-3; the accelerator is selected as a mixture of ammonium bifluoride, ammonium chloride and ammonium sulfate, and the addition ratio is 1-3:1-5:1-4; the corrosion inhibitor is selected as a mixture of citric acid, sodium stearate and urea, and the addition ratio is 1-5:1-4:1-3; The surfactant is selected as a mixture of sodium hydroxypropyl sulfonate, sodium dodecylbenzene sulfonate and OP-10, and the addition ratio is 1-2:1-4:1-3. The solubilizer is selected as a mixture of propylene glycol, alkyl amide and isopropanol, and the addition ratio is 1-8:1-5:1-6.

5. A treatment process using the novel "three-in-one" aluminum alloy degreasing agent as claimed in any one of claims 1 to 4, characterized in that: The steps include: Step 1: Prepare a new "three-in-one" aluminum alloy degreasing agent. The components and contents of the degreasing agent are as follows: 30-50g / L oxidant, 3-10g / L auxiliary agent, 2-10g / L accelerator, 1-10g / L corrosion inhibitor, 0.1-5g / L surfactant, and 0.1-3g / L solubilizer. Add the components to a corrosion-resistant container, with the remainder being water. Stir evenly to obtain the new "three-in-one" aluminum alloy degreasing agent. Step 2: Immerse the aluminum alloy workpiece to be treated in a degreasing agent at room temperature and take it out after 15-150 seconds; Step 3: Put the taken out aluminum alloy workpiece into water, clean it and then dry it.

6. The treatment process of a novel "three-in-one" aluminum alloy degreasing agent according to claim 5 is characterized in that: The processing temperature described in step 3 is room temperature.

7. The treatment process of a novel "three-in-one" aluminum alloy degreasing agent according to claim 5 is characterized in that: The processing time described in step 4 is 15-150s.

Images