A cutting oil for 5-series and 6-series composite aluminum alloys

Abstract

The present application relates to a kind of cutting oil for 5 series and 6 series composite aluminum alloy, the cutting oil includes the following raw materials: palm oil, lard, extreme pressure agent, corrosion inhibitor and anti-oil mist agent;The extreme pressure agent includes phosphate ammonium salt and polyether;The corrosion inhibitor includes benzotriazole and undecanedioic acid.The present application selects phosphate ammonium salt and polyether and sets suitable ratio as extreme pressure agent, realizes that cutting oil product obtains high extreme pressure and wear resistance simultaneously;In addition, the present application is combined by lard, extreme pressure agent, corrosion inhibitor and anti-oil mist agent, and the synergistic effect between four produces, effectively makes the cutting oil product made has excellent cooling and extreme pressure wear resistance, help the optimization of product processing.And benzotriazole and undecanedioic acid are compounded to form corrosion inhibitor, can effectively make the cutting oil product made has excellent rust-proof effect, can protect workpiece from rust.

Description

Technical Field

[0001] This invention belongs to the field of metalworking fluid technology, specifically, it relates to a cutting fluid for 5-series and 6-series composite aluminum alloys. Background Technology

[0002] In modern industrial production, aluminum alloys, especially 5-series and 6-series composite aluminum alloys, are widely used in various fields due to their excellent properties, such as low density, good corrosion resistance, high strength, and good machinability. 5-series aluminum alloys, with magnesium as the main alloying element, possess good corrosion resistance, weldability, and moderate strength; 6-series aluminum alloys, with magnesium and silicon as the main alloying elements, possess good strength, machinability, and corrosion resistance. These two series of composite aluminum alloys play important roles in industries such as aerospace, automotive manufacturing, and electronics. However, machining 5-series and 6-series composite aluminum alloys presents several challenges. On the one hand, due to the relatively low hardness of aluminum alloys, tool sticking is prone to occur during cutting, leading to accelerated tool wear, reduced machining efficiency, and decreased workpiece surface quality. On the other hand, aluminum alloys are susceptible to reaction with moisture in the air during machining, resulting in rust and affecting the appearance and performance of the workpiece. To address these issues, it is necessary to develop a cutting oil specifically designed for 5-series and 6-series composite aluminum alloys. This cutting oil should possess excellent extreme pressure anti-wear properties, forming a robust lubricating film during cutting to reduce friction between the tool and workpiece, decrease tool wear, and improve machining efficiency and workpiece surface quality. Simultaneously, the cutting oil should also have good rust prevention properties, preventing aluminum alloy workpieces from corroding during machining and storage.

[0003] Cutting oil plays a vital role in machining, serving as the primary cooling method in metal cutting processes. Currently, while some cutting oil products are available on the market, they still suffer from insufficient extreme pressure anti-wear properties or inadequate rust prevention. Therefore, developing a cutting oil with excellent extreme pressure anti-wear and rust prevention properties is of significant practical importance for improving the machining quality of 5-series and 6-series composite aluminum alloys. Summary of the Invention

[0004] The purpose of this invention is to provide a cutting oil for 5-series and 6-series composite aluminum alloys, which solves the problem of poor extreme pressure anti-wear and rust prevention properties of existing cutting oils.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A cutting oil for 5-series and 6-series composite aluminum alloys, the cutting oil comprising the following raw materials in parts by weight:

[0007]

[0008] Furthermore, the lard used in this invention was purchased from Wuhan Adomai New Energy Co., Ltd., and is a pale yellow oily liquid with a kinematic viscosity (40°C) of 90 mmHg. 2 Compared to traditional vegetable oils, lard has less free fat, is less prone to rancidity, and is more effective at reducing stickiness to knives and chips, improving the smoothness of products, while also having a certain ability to suppress smoke.

[0009] As a preferred embodiment of the present invention, the extreme pressure agent comprises ammonium phosphate salt and polyether.

[0010] Furthermore, the mass ratio of the ammonium phosphate salt to the polyether is 50-55:45-50.

[0011] Furthermore, the ammonium phosphate salt includes Xipeng XP349, purchased from Xipeng Environmental Technology (Luoyang) Co., Ltd., model XP349. Xipeng XP349 has high extreme pressure properties, can effectively smooth the cut surface of the workpiece, and can further improve the wear resistance of the cutting tool.

[0012] Furthermore, the polyether includes any one of propylene glycol random polyether PPE-1500, butanol random polyether BPE-1500, and isomeric tridecyl alcohol random polyether TPE-1000. The aforementioned polyethers are all purchased from Haian Petrochemical Plant in Jiangsu Province, and their main chemical components are polyoxyethylene-polyoxypropylene copolymers. They all have good extreme pressure anti-wear properties and the ability to protect cutting tools during heavy-duty processing.

[0013] As a preferred embodiment of the present invention, the corrosion inhibitor includes benzotriazole and undecanoic acid.

[0014] Furthermore, the mass ratio of benzotriazole to undecanoic acid is 62-75:25-30.

[0015] As a preferred embodiment of the present invention, the anti-oil mist agent includes polyisobutylene PB2400.

[0016] The method for preparing the cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0017] S1. Add lard and extreme pressure agent to palm oil in sequence, and stir at controlled temperature and speed to obtain intermediate material A;

[0018] S2. Add corrosion inhibitor and anti-oil mist agent to intermediate material A in sequence, and stir at controlled temperature and speed to obtain the finished cutting oil.

[0019] As a preferred technical solution of the present invention, the temperature of the temperature-controlled and speed-controlled stirring in step S1 is 40-50℃, the speed is 400-500rpm, and the time is 15-20min.

[0020] As a preferred technical solution of the present invention, the temperature of the temperature-controlled and speed-controlled stirring in step S2 is 35-40℃, the speed is 400-500rpm, and the time is 15-20min.

[0021] The beneficial effects of this invention are:

[0022] (1) This invention selects ammonium phosphate salt and polyether and sets an appropriate ratio as extreme pressure agent. Ammonium phosphate salt breaks through the high adsorption barrier of polyether on the friction surface to generate a protective film with friction reduction effect, so that the cutting oil product can obtain high extreme pressure and anti-wear performance at the same time. On this basis, this invention combines lard, extreme pressure agent, corrosion inhibitor and anti-oil mist agent. The four have a synergistic effect, which effectively makes the cutting oil product have excellent cooling and extreme pressure anti-wear properties. When using the cutting oil product produced by this invention, it can quickly absorb heat during the processing to inhibit the oil mist generated by palm oil volatilization, reduce the deformation caused by heat, and prevent the appearance of strip cracks in the test piece, which helps to optimize the product processing.

[0023] (2) In this invention, benzotriazole and undecanoic acid are combined to form a corrosion inhibitor, and a synergistic effect is formed in the system. Specifically, benzotriazole forms an oxide film covering the metal surface on the sample surface, and undecanoic acid with a long hydrocarbon group assists in forming a thicker adsorption film. The tighter adsorption between the hydrocarbon group sites of polar molecules increases the strength of the adsorption film, thereby effectively preventing the penetration of corrosive media and effectively making the finished cutting oil have excellent rust prevention effect, which can protect the workpiece from rust. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0025] The lard used in this embodiment of the invention was purchased from Wuhan Adomai New Energy Co., Ltd., and its kinematic viscosity (40°C) was 90 mm. 2 The Xipeng XP349 used was purchased from Xipeng Environmental Protection Technology (Luoyang) Co., Ltd., and its model is XP349. The propylene glycol random polyether PPE-1500, butanol random polyether BPE-1500 and isomeric tridecyl alcohol random polyether TPE-1000 used were all purchased from Haian Petrochemical Plant in Jiangsu Province. Their main chemical components are all polyoxyethylene-polyoxypropylene copolymers. The above will not be elaborated further.

[0026] Example 1

[0027] A cutting oil for 5-series and 6-series composite aluminum alloys, the cutting oil comprising the following raw materials in parts by weight:

[0028]

[0029] The extreme pressure agent comprises Sipon XP349 and propylene glycol random polyether PPE-1500 in a mass ratio of 52.5:45.

[0030] The corrosion inhibitor comprises benzotriazole and undecanoic acid in a mass ratio of 62:25;

[0031] A method for preparing a cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0032] S1. Add lard, Xipeng XP349 and propylene glycol random polyether PPE-1500 to palm oil in sequence, and stir at 50℃ and 400rpm for 15 minutes to obtain intermediate material A.

[0033] S2. Add benzotriazole, undecanoic acid and polyisobutylene PB2400 to intermediate material A in sequence. Stir at 35℃ and 500rpm for 20 minutes to obtain the finished cutting oil.

[0034] Example 2

[0035] A cutting oil for 5-series and 6-series composite aluminum alloys, the cutting oil comprising the following raw materials in parts by weight:

[0036]

[0037] The extreme pressure agent comprises Sipon XP349 and isomeric tridecyl alcohol random polyether TPE-1000 in a mass ratio of 50:50.

[0038] The corrosion inhibitor comprises benzotriazole and undecanoic acid in a mass ratio of 68.5:27.5;

[0039] A method for preparing a cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0040] S1. Add lard, Xipeng XP349 and isomeric tridecyl alcohol random polyether TPE-1000 to palm oil in sequence, and stir at 40℃ and 450rpm for 20min to obtain intermediate material A.

[0041] S2. Add benzotriazole, undecanoic acid and polyisobutylene PB2400 to intermediate material A in sequence, and stir at 400 rpm for 15 minutes while maintaining a temperature of 40℃ to obtain the finished cutting oil.

[0042] Example 3

[0043] A cutting oil for 5-series and 6-series composite aluminum alloys, the cutting oil comprising the following raw materials in parts by weight:

[0044]

[0045]

[0046] The extreme pressure agent comprises Sipon XP349 and butanol random polyether BPE-1500 in a mass ratio of 55:47.5;

[0047] The corrosion inhibitor comprises benzotriazole and undecanoic acid in a mass ratio of 75:30;

[0048] A method for preparing a cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0049] S1. Add lard, Xipeng XP349 and butanol random polyether BPE-1500 to palm oil in sequence, and stir at 45℃ and 500rpm for 17.5min to obtain intermediate material A.

[0050] S2. Add benzotriazole, undecanoic acid and polyisobutylene PB2400 to intermediate material A in sequence, and stir at 37.5℃ and 450rpm for 17.5 minutes to obtain the finished cutting oil.

[0051] Comparative Example 1

[0052] Compared with Example 1, the difference is that Comparative Example 1 does not add Sipon XP349, and the extreme pressure agent only includes propylene glycol random polyether PPE-1500, that is: the cutting oil includes the following raw materials in parts by weight:

[0053] Palm oil 70 parts by weight, lard 19 parts by weight, extreme pressure agent 15 parts by weight, corrosion inhibitor 0.2 parts by weight, polyisobutylene PB2400 0.8 parts by weight.

[0054] The extreme pressure agent includes propylene glycol random polyether PPE-1500;

[0055] The corrosion inhibitor comprises benzotriazole and undecanoic acid in a mass ratio of 62:25;

[0056] The method for preparing the cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0057] S1. Add lard and propylene glycol random polyether PPE-1500 to palm oil in sequence, and stir at 50°C and 400rpm for 15 minutes to obtain intermediate material A.

[0058] S2. Add benzotriazole, undecanoic acid and polyisobutylene PB2400 to intermediate material A in sequence. Stir at 35℃ and 500rpm for 20 minutes to obtain the finished cutting oil.

[0059] Comparative Example 2

[0060] Compared with Example 1, the difference is that propylene glycol random polyether PPE-1500 is not added in Comparative Example 2, and the extreme pressure agent only includes Sipon XP349. That is, the cutting oil comprises the following raw materials in parts by weight:

[0061]

[0062] The extreme pressure agent includes Sipon XP349;

[0063] The corrosion inhibitor comprises benzotriazole and undecanoic acid in a mass ratio of 62:25;

[0064] The method for preparing the cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0065] S1. Add lard and Xipeng XP349 to palm oil in sequence, and stir for 15 minutes at 50℃ and 400rpm to obtain intermediate material A.

[0066] S2. Add benzotriazole, undecanoic acid and polyisobutylene PB2400 to intermediate material A in sequence. Stir at 35℃ and 500rpm for 20 minutes to obtain the finished cutting oil.

[0067] Comparative Example 3

[0068] Compared with Example 1, the difference is that no lard was added in Comparative Example 3, and the weight parts of extreme pressure agent, corrosion inhibitor, and polyisobutylene PB2400 were changed. That is, the cutting oil includes the following raw materials in parts by weight:

[0069]

[0070] The extreme pressure agent comprises Sipon XP349 and propylene glycol random polyether PPE-1500 in a mass ratio of 52.5:45.

[0071] The corrosion inhibitor comprises benzotriazole and undecanoic acid in a mass ratio of 62:25;

[0072] The method for preparing the cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0073] S1. Add Xipeng XP349 and propylene glycol random polyether PPE-1500 to palm oil in sequence, and stir at 50℃ and 400rpm for 15 minutes to obtain intermediate material A.

[0074] S2. Add benzotriazole, undecanoic acid and polyisobutylene PB2400 to intermediate material A in sequence. Stir at 35℃ and 500rpm for 20 minutes to obtain the finished cutting oil.

[0075] Comparative Example 4

[0076] Compared with Example 1, the difference is that no extreme pressure agent was added in Comparative Example 4, and the weight parts of lard, corrosion inhibitor, and polyisobutylene PB2400 were changed. That is, the cutting oil includes the following raw materials in parts by weight:

[0077]

[0078] The corrosion inhibitor comprises benzotriazole and undecanoic acid in a mass ratio of 62:25;

[0079] The method for preparing the cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0080] S1. Add lard to palm oil in sequence, and stir for 15 minutes while maintaining a temperature of 50℃ and a speed of 400rpm to obtain intermediate material A;

[0081] S2. Add benzotriazole, undecanoic acid and polyisobutylene PB2400 to intermediate material A in sequence. Stir at 35℃ and 500rpm for 20 minutes to obtain the finished cutting oil.

[0082] Comparative Example 5

[0083] Compared with Example 1, the difference is that no corrosion inhibitor was added in Comparative Example 5, and the weight parts of lard, extreme pressure agent, and polyisobutylene PB2400 were changed. That is, the cutting oil includes the following raw materials in parts by weight:

[0084]

[0085]

[0086] The extreme pressure agent comprises Sipon XP349 and propylene glycol random polyether PPE-1500 in a mass ratio of 52.5:45.

[0087] A method for preparing a cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0088] S1. Add lard, Xipeng XP349 and propylene glycol random polyether PPE-1500 to palm oil in sequence, and stir at 50℃ and 400rpm for 15 minutes to obtain intermediate material A.

[0089] S2. Add polyisobutylene PB2400 to intermediate material A, control the temperature at 35℃ and the speed at 500rpm, and stir for 20 minutes to obtain the finished cutting oil.

[0090] Comparative Example 6

[0091] Compared with Example 1, the difference is that polyisobutylene PB2400 was not added in Comparative Example 6, and the weight parts of lard, extreme pressure agent and corrosion inhibitor were changed. That is, the cutting oil includes the following raw materials in the following weight parts:

[0092]

[0093] The extreme pressure agent comprises Sipon XP349 and propylene glycol random polyether PPE-1500 in a mass ratio of 52.5:45.

[0094] The corrosion inhibitor comprises benzotriazole and undecanoic acid in a mass ratio of 62:25;

[0095] A method for preparing a cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0096] S1. Add lard, Xipeng XP349 and propylene glycol random polyether PPE-1500 to palm oil in sequence, and stir at 50℃ and 400rpm for 15 minutes to obtain intermediate material A.

[0097] S2. Add benzotriazole and undecanoic acid sequentially to intermediate material A, and stir for 20 minutes at 35°C and 500 rpm to obtain the finished cutting oil.

[0098] Comparative Example 7

[0099] Compared with Example 1, the difference is that benzotriazole is not added in Comparative Example 7, and the corrosion inhibitor only includes undecanoic acid, that is: the cutting oil includes the following raw materials in parts by weight:

[0100]

[0101] The extreme pressure agent comprises Sipon XP349 and propylene glycol random polyether PPE-1500 in a mass ratio of 52.5:45.

[0102] The corrosion inhibitor includes undecanoic acid;

[0103] The method for preparing the cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0104] S1. Add lard, Xipeng XP349 and propylene glycol random polyether PPE-1500 to palm oil in sequence, and stir at 50℃ and 400rpm for 15 minutes to obtain intermediate material A.

[0105] S2. Add undecanoic acid and polyisobutylene PB2400 to intermediate material A in sequence, and stir at 35℃ and 500rpm for 20 minutes to obtain the finished cutting oil.

[0106] Comparative Example 8

[0107] Compared with Example 1, the difference is that undecanoic acid was not added in Comparative Example 8, and the corrosion inhibitor only includes benzotriazole. That is, the cutting oil comprises the following raw materials in parts by weight:

[0108]

[0109]

[0110] The extreme pressure agent comprises Sipon XP349 and propylene glycol random polyether PPE-1500 in a mass ratio of 52.5:45.

[0111] The corrosion inhibitor includes benzotriazole;

[0112] The method for preparing the cutting oil for 5-series and 6-series composite aluminum alloys specifically includes the following steps:

[0113] S1. Add lard, Xipeng XP349 and propylene glycol random polyether PPE-1500 to palm oil in sequence, and stir at 50℃ and 400rpm for 15 minutes to obtain intermediate material A.

[0114] S2. Add benzotriazole and polyisobutylene PB2400 to intermediate material A in sequence, and stir at 35℃ and 500rpm for 20 minutes to obtain the finished cutting oil.

[0115] Test Example 1

[0116] Extreme pressure anti-wear test: A four-ball friction testing machine (model MS-10J) from Xiamen Tianji Automation Co., Ltd. was used, according to the test standard GB / T12583-1998. Test conditions: 1780 rpm, 12 s. The maximum non-seize load P was tested on the cutting oil products prepared in Examples 1-3 and Comparative Examples 1-6. B Test. The maximum load at which the steel ball does not seize under lubrication. The higher the measured value of this index, the better the lubrication performance; the results are shown in Table 1.

[0117] Table 1

[0118]

[0119]

[0120] As can be seen from the data in Table 1 of Examples 1-3 and Comparative Examples 1-2, the present invention selects ammonium phosphate salt and polyether and sets an appropriate ratio as extreme pressure agents, so as to achieve high extreme pressure and anti-wear performance of the cutting oil product at the same time; and as can be seen from the data in Examples 1-3 and Comparative Examples 3-6, the cutting oil product prepared by the present invention has excellent extreme pressure and anti-wear properties.

[0121] Test Example 2

[0122] Rust prevention test: The cutting oil products prepared in Examples 1-3 and Comparative Examples 7-8 were subjected to single-piece and stacked-piece rust prevention tests according to GB / T 6144-2010. Specifically, in the single-piece test, after continuous testing in the constant temperature chamber for 24 hours, the cast iron sheet was observed every 1 hour until rust was observed, and the time was recorded in Table 2. In the stacked-piece test, multiple sets of samples were set up. After continuous testing in the constant temperature chamber for 4 hours, two sets of test pieces were taken out every 0.5 hours. The test pieces were opened, and the test solution was wiped off with degreased cotton soaked in anhydrous ethanol. Immediately, it was observed whether there was rust or obvious overlapping marks on the two stacked surfaces within 1 mm of the edge of the test piece. The test was stopped when rust or obvious overlapping marks were observed on any set of test pieces, and the time was recorded in Table 2. The results are shown in Table 2.

[0123] Table 2

[0124] Example 1 50 9.5 Example 2 49 9 Example 3 49 9 Comparative Example 7 30 5.5 Comparative Example 8 34 6

[0125] As can be seen from Table 2, the cutting oil product prepared by this invention has excellent rust prevention effect and can protect the workpiece from corrosion.

[0126] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0127] The above description is merely an example and illustration of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A method for preparing cutting oil for 5-series and 6-series composite aluminum alloys, characterized in that, The cutting oil comprises the following raw materials in parts by weight: Palm oil 60-80 parts by weight; 9-19 parts by weight of lard; the kinematic viscosity of the lard at 40°C is 90 mmHg. 2 / s; Extreme pressure agent 15-20 parts by weight; Corrosion inhibitor 0.2-1 parts by weight; and Anti-oil mist agent: 0.2-0.8 parts by weight; The extreme pressure agent is an ammonium phosphate salt and a polyether, wherein the mass ratio of the ammonium phosphate salt and the polyether is 50-55:45-50; The ammonium phosphate salt is selected from Xipeng XP349; The polyether includes any one of propylene glycol random polyether PPE-1500, butanol random polyether BPE-1500, and isomeric tridecyl alcohol random polyether TPE-1000; The corrosion inhibitor comprises benzotriazole and undecanoic acid, wherein the mass ratio of benzotriazole to undecanoic acid is 62-75:25-30. The anti-oil mist agent is selected from polyisobutylene PB2400; The preparation method includes the following steps: S1. Add lard and extreme pressure agent to palm oil in sequence, and stir at controlled temperature and speed to obtain intermediate material A; S2. Add corrosion inhibitor and anti-oil mist agent to intermediate material A in sequence, and stir while controlling the temperature and speed to obtain the finished cutting oil. In step S1, the temperature and speed of the temperature-controlled stirring are 40-50℃, the speed is 400-500rpm, and the time is 15-20min; in step S2, the temperature and speed of the temperature-controlled stirring are 35-40℃, the speed is 400-500rpm, and the time is 15-20min.

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