A water-based memory metal wire drawing liquid and its application

Abstract

The present invention relates to a water-based memory metal wire drawing liquid and its application. The raw materials for preparing the water-based memory metal wire drawing liquid include amino alcohol, alcohol amine borate, polyol, aliphatic dibasic acid, lubricant, corrosion inhibitor, sedimentation agent and bactericide. The water-based memory metal wire drawing liquid adopts water as the base solvent and is prepared by adding specific ingredients and a reasonable proportion of each component. The water-based memory metal wire drawing liquid has excellent wire drawing performance and stability, can effectively control deformation during the memory metal processing process, and improve processing efficiency and product quality. The surface roughness Ra of the processed memory metal is 100-200nm, the gloss value is 100-150Gu, the lines are clear, and the texture is good.

Description

Technical Field

[0001] The invention belongs to the technical field of metal processing, and in particular relates to a water-based memory metal wire drawing liquid and an application thereof. Background Art

[0002] Shape memory metals are a class of materials that exhibit properties such as shape memory, superelasticity, corrosion resistance, and adjustability. They are widely used in medical devices, aerospace, automotive, and mechanical industries. However, due to their unique properties, shape memory metals are prone to deformation during processing, affecting the precision, performance, and appearance of the product. Therefore, wire drawing fluids have become an indispensable processing agent in the field of shape memory metal processing.

[0003] CN115491250A discloses a high-speed precision copper wire drawing liquid and a preparation method thereof, comprising the following raw material components by weight: 23-24 parts castor oil, 5-6 parts polyether oil, 3-4 parts 2,6-di-tert-butyl-p-cresol, 30-35 parts ethanol, 10-12 parts synthetic oil, 3-5 parts terephthaloyl chloride, 15-16 parts polyethylene glycol 300, 20-24 parts anti-wear oil, and 1000-2000 parts water. The high-speed precision copper wire drawing liquid uses castor oil and polyether oil as blending oils, which can be effectively combined and dissolved in each other, effectively reducing the temperature and ensuring the lubrication effect. The high-speed precision copper wire drawing liquid of the present invention can achieve a maximum drawing speed of 40m / sec, effectively and quickly reducing the temperature of the die and the wire rod during the drawing process, ensuring stable production quality, and effectively protecting the service life of the die.

[0004] CN103614200A discloses a copper wire high-speed drawing liquid and a preparation method thereof, which are characterized in that the liquid is made from the following raw materials in parts by weight: 20-24 parts of castor oil, 2-3 parts of sodium petroleum sulfonate, 1-2 parts of benzotriazole, 1-2 parts of 2,6-di-tert-butyl-p-cresol, 30-35 parts of ethanol, 10-12 parts of kerosene, 1-2 parts of sodium alginate, 2-3 parts of terephthaloyl chloride, 10 parts of polyethylene glycol-2008-10 parts of dodecyl stearic acid, 10-14 parts of an anti-wear agent, and 1000 parts of water. The anti-wear agent of the invention is added with nano-aluminum nitride powder to promote heat dissipation, increase film-forming properties, and extend the service life of the drawing die. The lubricity, corrosion resistance, and cleaning properties can be matched over a long period of time, the particle dispersion state is fine and stable, and the service life is long. The liquid is used for processing thin copper wire or ultrafine copper wire, overcomes abnormal wire diameter phenomena such as wire shrinkage and wire breakage, and the quality of the drawn copper wire is stable.

[0005] Currently, most of the memory metal drawing fluids on the market are organic solvent-based, which have the disadvantages of high volatility and strong odor, and do not meet environmental requirements. In addition, the cooling effect during the drawing process is poor, and the metal surface after the drawing process is rough and has low gloss. Therefore, it is necessary to develop a water-based memory metal drawing fluid. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the object of the present invention is to provide a water-based memory metal drawing liquid and its application.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a water-based memory metal drawing liquid, wherein the raw materials for preparing the water-based memory metal drawing liquid include amino alcohol, alcohol amine borate, polyol, aliphatic dibasic acid, lubricant, corrosion inhibitor, precipitant and bactericide.

[0009] This invention innovatively develops a water-based memory metal drawing fluid. This fluid uses water as a base solvent and is prepared by adding specific ingredients in a rationally proportioned ratio. This fluid exhibits excellent drawing performance and stability, effectively controlling deformation during the memory metal processing process, improving processing efficiency and product quality. The processed memory metal achieves a surface roughness Ra of 100-200nm and a glossiness of 100-150Gu, with clear lines and a good texture.

[0010] In the water-based memory metal drawing fluid, part of the amino alcohol reacts with the aliphatic dibasic acid to form an alcoholamine ester. The generated alcoholamine ester is used in conjunction with alcoholamine borate, polyol and lubricant to form a lubricating film on the metal surface, thereby reducing the friction between the metal and the grinding tool, making the drawing process smoother and having excellent lubrication and rust prevention effects.

[0011] Corrosion inhibitors have antioxidant and corrosion inhibition effects. They can reduce the contact of metal with oxygen and moisture in the air during the wire drawing process, prevent oxidation and corrosion of the metal surface, and improve the quality and efficiency of wire drawing.

[0012] The sedimentation agent has the effect of settling metal debris, etc., ensuring the clean flow of the drawing liquid, improving the recycling rate and extending the service life.

[0013] The bactericide has bactericidal and mildew-proof effects, can inhibit the growth of bacteria and mildew, and keep the drawing liquid clean and stable.

[0014] Preferably, the raw materials for preparing the water-based memory metal wire drawing liquid include, by weight, 8-12 parts of amino alcohol, 15-20 parts of amine borate, 6-8 parts of polyol, 2-4 parts of aliphatic dibasic acid, 3-5 parts of lubricant, 0.1-0.5 parts of corrosion inhibitor, 0.1-0.5 parts of precipitant and 0.1-0.5 parts of bactericide.

[0015] The number of parts of the amino alcohol can be 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, etc.;

[0016] The number of parts of the alcoholamine borate can be 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, etc.;

[0017] The number of parts of the aliphatic dibasic acid can be 2 parts, 2.6 parts, 3 parts, 3.5 parts, 4 parts, etc.;

[0018] The number of parts of the lubricant can be 3 parts, 3.6 parts, 4 parts, 4.5 parts, 4 parts, 4.5 parts, 5 parts, etc.;

[0019] The amount of the corrosion inhibitor can be 0.1 part, 0.15 part, 0.2 part, 0.25 part, 0.3 part, 0.4 part, 0.5 part, etc.;

[0020] The amount of the sedimentation agent can be 0.1 part, 0.15 part, 0.2 part, 0.25 part, 0.3 part, 0.4 part, 0.5 part, etc.;

[0021] The amount of the fungicide can be 0.1 part, 0.15 part, 0.2 part, 0.25 part, 0.3 part, 0.4 part, 0.5 part, etc. Specific values within the above numerical range can be selected and will not be repeated here.

[0022] Preferably, the amino alcohol includes any one of triethanolamine, ethanolamine, diethanolamine or triisopropanolamine, or a combination of at least two thereof.

[0023] The at least two combinations include a combination of triethanolamine and ethanolamine, a combination of ethanolamine and diethanolamine, a combination of triethanolamine and diethanolamine, a combination of diethanolamine and triisopropanolamine, etc. Any other combinations can be selected and will not be described here one by one.

[0024] Preferably, the alcoholamine borate includes any one or a combination of at least two of triethanolamine borate, ethanolamine borate, diethanolamine borate or triisopropanolamine cyclic borate.

[0025] The at least two combinations include a combination of triethanolamine borate and ethanolamine borate, a combination of ethanolamine borate and diethanolamine borate, a combination of triethanolamine borate and diethanolamine borate, a combination of diethanolamine borate and triisopropanolamine cyclic borate, and the like. Any other combinations may be selected and will not be described in detail here.

[0026] Preferably, the aliphatic dibasic acid includes any one of sebacic acid, azelaic acid, suberic acid or dodecanedioic acid, or a combination of at least two thereof.

[0027] The at least two combinations include a combination of sebacic acid and azelaic acid, a combination of azelaic acid and suberic acid, a combination of azelaic acid and dodecane diacid, and the like. Any other combinations may be selected and will not be described in detail here.

[0028] Preferably, the viscosity of the lubricant is 2300-3600 cSt, 40°C.

[0029] The specific point values of 2300-3600 can be 2300, 2400, 2500, 3000, 3200, 3400, 3500, 3600, etc. Specific point values within the above numerical range can be selected and will not be described one by one here.

[0030] Preferably, the corrosion inhibitor includes any one or a combination of at least two of phosphates, silicates, sulfonates, quaternary ammonium compounds, benzotriazole compounds, maleic acid polymers, acrylic acid polymers, 5-chlorobenzotriazole sodium, 2-carboxyethylphosphonic acid or acrylic anhydride copolymers; 2-carboxyethylphosphonic acid is further preferred.

[0031] The at least two combinations include a combination of phosphate and silicate, a combination of benzotriazole compounds and maleic acid polymers, a combination of 5-chlorobenzotriazole sodium or acrylic anhydride copolymers, and the like. Any other combinations may be selected and will not be described in detail here.

[0032] Preferably, the sedimentation agent comprises any one or a combination of at least two of quaternary ammonium salt compounds, sodium alkylphenyl sulfonate, polyaluminium chloride, polyaluminium sulfate or polyferric chloride. Quaternary ammonium salt compounds are further preferred.

[0033] The at least two combinations include a combination of a quaternary ammonium salt compound and sodium alkylphenyl sulfonate, a combination of polyaluminum chloride and polyaluminum sulfate, or a combination of polyferric chloride and a quaternary ammonium salt compound, and any other combinations can be selected and will not be described here one by one.

[0034] Preferably, the fungicide comprises any one or a combination of at least two of benzotriazolone, N,N-methylenebismorpholine, 3-iodo-2-propynylbutylcarbamate, alkylamide ethylamine, 1,2-benzisothiazolin-3-one or isothiazolinone.

[0035] The at least two combinations include a combination of benzotriazolone and N,N-methylenebismorpholine, a combination of 3-iodo-2-propynylbutylcarbamate and alkylamide ethylamine, or a combination of polyferric chloride and 1,2-benzisothiazolin-3-one and isothiazolinone, and any other combinations can be selected and will not be described in detail here.

[0036] Preferably, the water-based memory metal wire drawing liquid further comprises 0.001-0.2 parts by weight of a coupling agent.

[0037] The weight percentage of the coupling agent can be 0.001 parts, 0.01 parts, 0.05 parts, 0.1 parts, 0.15 parts, 0.2 parts, etc. Specific values within the above numerical range can be selected and will not be detailed here.

[0038] Preferably, the coupling agent comprises any one or a combination of at least two of Guerbet alcohols having 12 to 32 carbon atoms.

[0039] Guerbet alcohols are primary aliphatic alcohols with long β-chain branches. They can be synthesized via the Guerbet reaction of linear primary alcohols. Due to their unique branched structure and high molecular weight, Guerbet alcohols exhibit improved fluidity, antioxidant stability, and biodegradability compared to linear alcohols of the same carbon number. In the present invention, Guerbet alcohols act as regulators and stabilizers, adjusting the viscosity and pH of water-based shape memory metal wire drawing fluids, thereby improving their stability and operability.

[0040] The number of carbon atoms in the Guerbet alcohol may be 12, 16, 18, 20, 24, 28, 30, 32, or the like.

[0041] In a second aspect, the present invention provides an application of a water-based memory metal drawing liquid in the preparation of memory metal.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] This invention innovatively develops a water-based memory metal drawing fluid. This fluid uses water as a base solvent and is prepared by adding specific ingredients in a rationally proportioned ratio. This fluid exhibits excellent drawing performance and stability, effectively controlling deformation during the memory metal processing process, improving processing efficiency and product quality. The processed memory metal achieves a surface roughness Ra of 100-200nm and a glossiness of 100-150Gu, with clear lines and a good texture. DETAILED DESCRIPTION

[0044] For the convenience of understanding the present invention, the present invention is given below with examples. It should be understood by those skilled in the art that the examples are only for the purpose of helping to understand the present invention and should not be regarded as specific limitations of the present invention.

[0045] The sources of some components in the Examples and Comparative Examples are as follows:

[0046] The weight percentages of the lubricants, corrosion inhibitors, precipitants and bactericides mentioned below are all calculated based on the actual content of the effective ingredients contained in the commercially available raw materials. The commercially available raw materials may also selectively contain any one or a combination of at least two of solvents, fillers, diluents, stabilizers, pH regulators, antibacterial agents, antioxidants or impurities within the permitted range.

[0047] Lubricant polymer EXTRIMIR 168 is a product of Guangzhou Miqi Chemical Co., Ltd., and its main component is pentaerythritol unsaturated oleic acid polymer; lubricant polymer EXTRIMIR 165 is a product of Guangzhou Miqi Chemical Co., Ltd., and its main component is pentaerythritol coconut oil polymer; lubricant polymer EXTRIMIR 175 is a product of Guangzhou Miqi Chemical Co., Ltd., and its main component is pentaerythritol soybean oil polymer; corrosion inhibitor ASI-HW is a product of Solvay China, and its main component is phosphonate; corrosion inhibitor AE-80 is a product of Solvay China, and its main component is amide polyether; corrosion inhibitor HW-15 is a product of Solvay China, and its main component is amyl phosphate; sedimentation agent LGA-430C is a product of Guangzhou Miqi Chemical Co., Ltd., and its main component is polyquaternium salt; sedimentation agent FUNTAG CJ118 is a product of Guangzhou Mickey Chemical Co., Ltd., and its main component is polyquaternium salt; the fungicide BIT-20 is a product of Shanghai Riqian Chemical Technology Co., Ltd., and its main component is benzisothiazolinone; the fungicide MBM is a product of Clariant Chemical (Guangzhou) Co., Ltd., and its main component is methylene biomorpholine; the coupling agent ISOFOL 12 is a product of Sasol (China) Chemical Co., Ltd., and its main component is dodecacarbon Guerbet alcohol; the coupling agent ISOFOL 16 is a product of Sasol (China) Chemical Co., Ltd., and its main component is hexadecane Guerbet alcohol; the coupling agent ISOFOL 18 is a product of Sasol (China) Chemical Co., Ltd., and its main component is 18-carbon Guerbet alcohol; the coupling agent ISOFOL20 is a product of Sasol (China) Chemical Co., Ltd., and its main component is 20-carbon Guerbet alcohol; polyaluminum chloride is a product of Henan Zhengyuan Chemical Co., Ltd.; maleic acid polymer is a product of Jinan Delan Chemical Co., Ltd., and its main component is maleic acid-acrylic acid copolymer; base oil 150SN is a product of Guangdong Zhonghai Nanlian Energy Co., Ltd.; rust-proof lubricant FP is a product of Guangzhou Mickey Chemical Co., Ltd.; tricarboxylic acid 2107 is a product of Shanghai Zhenwei Chemical Co., Ltd.; and Pingpingjia emulsifier is a product of Jiangsu Hai'an Petrochemical Plant.

[0048] Example 1

[0049] This embodiment provides a water-based memory metal drawing liquid, the preparation formula of which is as follows. The preparation method is to mix the following components, stir at 40 r / min at 25° C. for 120 minutes, and filter to obtain the water-based memory metal drawing liquid.

[0050]

[0051]

[0052] Example 2

[0053] This embodiment provides a water-based memory metal drawing liquid, the preparation formula of which is as follows. The preparation method is to mix the following components, stir at 40 r / min at 25° C. for 120 minutes, and filter to obtain the water-based memory metal drawing liquid.

[0054]

[0055]

[0056] Example 3

[0057] This embodiment provides a water-based memory metal drawing liquid, the preparation formula of which is as follows. The preparation method is to mix the following components, stir at 40 r / min at 25° C. for 120 minutes, and filter to obtain the water-based memory metal drawing liquid.

[0058] Components Parts by weight triethanolamine 8 triethanolamine borate 15 glycerin 6 Sebacic acid 2 Polyester EXTRIMIR 168 3 Corrosion Inhibitor ASI-HW 0.1 Sedimentation agent LGA-430C 0.1 BIT20 fungicide 0.1 Couplant ISOFOL 12 0.001 water 65.699

[0059] Example 4

[0060] This embodiment provides a water-based memory metal drawing liquid, the preparation formula of which is as follows. The preparation method is to mix the following components, stir at 40 r / min at 25° C. for 120 minutes, and filter to obtain the water-based memory metal drawing liquid.

[0061]

[0062]

[0063] Example 5

[0064] This embodiment provides a water-based memory metal drawing liquid, the preparation formula of which is as follows. The preparation method is to mix the following components, stir at 40 r / min at 25° C. for 120 minutes, and filter to obtain the water-based memory metal drawing liquid.

[0065]

[0066]

[0067] Example 6

[0068] This embodiment provides a water-based memory metal drawing liquid, the formula of which is different from that of Example 1 only in that the precipitant is replaced by polyaluminum chloride instead of precipitant LGA-430C, and the usage amount remains unchanged. The preparation method thereof refers to Example 1.

[0069] Example 7

[0070] This embodiment provides a water-based memory metal drawing liquid, the formula of which is different from that of Example 1 only in that the corrosion inhibitor is replaced by maleic acid-acrylic acid polymer instead of corrosion inhibitor ASI-HW, and the usage amount remains unchanged. The preparation method thereof refers to Example 1.

[0071] Example 8

[0072] This embodiment provides a water-based memory metal wire drawing liquid. The formula thereof differs from that of Example 1 only in that it does not contain the Guerbet alcohol ISOFOL 12. The preparation method thereof is similar to that of Example 1.

[0073] Example 9

[0074] This embodiment provides a water-based memory metal wire drawing liquid. The formula thereof is different from that of Example 1 only in that the lubricant polymer ester EXTRIMIR 168 is not contained. The preparation method thereof is similar to that of Example 1.

[0075] Example 10

[0076] This embodiment provides a water-based memory metal wire drawing liquid, the formula of which is different from that of Example 1 only in that it does not contain the corrosion inhibitor ASI-HW. The preparation method thereof is similar to that of Example 1.

[0077] Example 11

[0078] This embodiment provides a water-based memory metal wire drawing liquid, the formula of which is different from that of Example 1 only in that it does not contain the sedimentation agent LGA-430C. The preparation method thereof is similar to that of Example 1.

[0079] Example 12

[0080] This embodiment provides an oil-based memory metal drawing liquid, and its formula is as follows:

[0081] Components Parts by weight Base oil 150SN 40 Anti-rust lubricant FP 8 Tricarboxylic acid 2107 4 triethanolamine 8 BIT20 fungicide 0.5 Isohexanediol 2 Pingping plus emulsifier 26 Corrosion inhibitor HW-15 0.5 ISOFOL 18 1 water 10

[0082] Test Case

[0083] The water-based memory metal drawing liquid prepared in Examples 1-11 was added to water to prepare a water-based memory metal drawing liquid with a concentration of 20%. The oil-based memory metal drawing liquid prepared in Example 12 was dissolved in water to prepare an oil-based memory metal drawing liquid with a concentration of 20%. A commercially available oil-based drawing liquid was prepared as an emulsifier with a concentration of 20%. The memory metal (nickel-titanium alloy) to be drawn was placed in a drawing machine for processing.

[0084] Equal amounts of the water-based memory metal wire drawing fluid prepared in Examples 1-11 and the oil-based memory metal wire drawing fluid prepared in Example 12 were used to process 2000 pieces of memory metal each, and equal amounts of commercially available wire drawing fluid were used to process 2000 pieces. After processing, the surface roughness of the memory metal was measured using a Japanese Mitutoyo SJ-210 surface roughness measuring instrument (random points were taken for each sample, a total of 5 points were taken, and the roughness values of the 5 sampled points were tested). The roughness was determined to be qualified if Ra(max)≤200nm and Ra(min)≥100nm, otherwise it was unqualified. The yield rate was calculated as (the number of workpieces with Ra(max)≤200nm and Ra(min)≥100nm / the total number of workpieces input)×100%;

[0085] The memory metal gloss was tested using a NHG268 multi-angle precision gloss meter from Trinity (5 points were selected and the gloss values at 5 points were measured). The gloss values obtained were: gloss (max) ≤ 150 Gu and gloss (min) ≥ 100 Gu, which was considered qualified; otherwise, it was considered unqualified. The yield rate was calculated as (the number of workpieces with gloss (max) ≤ 150 Gu and gloss (min) ≥ 100 Gu / the total number of workpieces input) × 100%.

[0086] Table 1

[0087] Processing fluid Surface roughness yield (%) Glossiness value yield (%) Example 1 99.5 99.5 Example 2 99 99 Example 3 99 99 Example 4 98 97.5 Example 5 98 97.5 Example 6 97 97 Example 7 97 97 Example 8 80 80.5 Example 9 82 82 Example 10 80.5 80.5 Example 11 78 79 Example 12 70 70.5 Commercially available wire drawing fluid 69.5 70

[0088] The test results are shown in Table 1. As can be seen from Table 1, the memory metal drawing liquid prepared by Example 1 has the best gloss and surface roughness, and the yield is also the best among all groups. The yield of the memory metals prepared by Examples 2 and 3 is also outstanding. The yield of the memory metals prepared by mixing the components of Examples 4-5 is also relatively high. However, in Examples 6-9, lubricants, coupling agents, sedimentation agents and corrosion inhibitors are missing respectively, resulting in unstable surface roughness and gloss values, and a decrease in yield. The commercially available solvent-based drawing liquid contains a high content of base oil and has poor cooling effect, which causes the memory metal to easily deform, and the yield of surface roughness and gloss values is significantly reduced. The above results illustrate that the amino alcohol, alcoholamine borate, polyol, aliphatic dibasic acid, lubricant, corrosion inhibitor, sedimentation agent, coupling agent and bactericide in the present invention have a significant promoting effect on the gloss and roughness of memory metal processing when a specific ratio is met.

[0089] The applicant declares that the present invention uses the above-described embodiments to illustrate the detailed process equipment and process flow of the present invention. However, the present invention is not limited to the above-described detailed process equipment and process flow, and does not necessarily rely on the above-described detailed process equipment and process flow in order to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent replacements for the raw materials of the present invention's products, additions of auxiliary ingredients, and selection of specific methods, etc., fall within the scope of protection and disclosure of the present invention.

Claims

1. A water-based memory metal drawing liquid, characterized in that: The raw materials for preparing the water-based memory metal wire drawing liquid include, by weight, 8-12 parts of amino alcohol, 15-20 parts of alcoholamine borate, 6-8 parts of polyol, 2-4 parts of aliphatic dibasic acid, 3-5 parts of lubricant, 0.1-0.5 parts of corrosion inhibitor, 0.1-0.5 parts of sedimentation agent, 0.1-0.5 parts of fungicide and 0.001-0.2 parts of coupling agent; The lubricant comprises any one of pentaerythritol unsaturated oleic acid polymer, pentaerythritol coconut oil polymer or pentaerythritol soybean oil polymer or a combination of at least two thereof; The corrosion inhibitor includes any one or a combination of at least two of phosphates, silicates, sulfonates, quaternary ammonium base compounds, benzotriazole compounds, maleic acid polymers, acrylic acid polymers, 5-chlorobenzotriazole sodium, 2-carboxyethylphosphonic acid or acrylic anhydride copolymers; The sedimentation agent includes any one or a combination of at least two of quaternary ammonium salt compounds, sodium alkylphenyl sulfonate, polyaluminum chloride, polyaluminum sulfate or polyferric chloride; The coupling agent includes any one or a combination of at least two of Guerbet alcohols having 12 to 32 carbon atoms.

2. The water-based memory metal wire drawing liquid according to claim 1, characterized in that: The amino alcohol includes any one of triethanolamine, ethanolamine, diethanolamine or triisopropanolamine, or a combination of at least two thereof.

3. The water-based memory metal wire drawing liquid according to claim 1, characterized in that: The alcoholamine borate includes any one or a combination of at least two of triethanolamine borate, ethanolamine borate, diethanolamine borate or triisopropanolamine cyclic borate.

4. The water-based memory metal wire drawing liquid according to claim 1, characterized in that: The polyol includes any one of glycerol, ethylene glycol, propylene glycol or diethylene glycol, or a combination of at least two of them.

5. The water-based memory metal wire drawing liquid according to claim 1, characterized in that: The aliphatic dibasic acid includes any one of sebacic acid, azelaic acid, suberic acid or dodecanedioic acid, or a combination of at least two thereof.

6. The water-based memory metal wire drawing liquid according to claim 1, characterized in that: The viscosity of the lubricant is 2300-3600 cSt at 40°C.

7. The water-based memory metal wire drawing liquid according to claim 1, characterized in that: The corrosion inhibitor is 2-carboxyethylphosphonic acid.

8. The water-based memory metal wire drawing liquid according to claim 1, characterized in that: The sedimentation agent is a quaternary ammonium salt compound.

9. The water-based memory metal wire drawing liquid according to claim 1, characterized in that: The fungicide includes any one of benzotriazolone, N,N-methylenebismorpholine, 3-iodo-2-propynylbutylcarbamate, alkylamide ethylamine, 1,2-benzisothiazolin-3-one or isothiazolinone, or a combination of at least two thereof.

10. Use of the water-based memory metal drawing liquid according to any one of claims 1 to 9 in the preparation of memory metal.

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