Cutting oil for 5-series and 6-series composite aluminum alloys

Abstract

The invention relates to cutting oil for 5-series and 6-series composite aluminum alloys. The cutting oil is prepared from the following raw materials: palm oil, lard oil, an extreme pressure agent, a corrosion inhibitor and an anti-oil mist agent, the extreme pressure agent comprises ammonium phosphate and polyether; the corrosion inhibitor comprises benzotriazole and undecanedioic acid. According to the invention, ammonium phosphate and polyether are selected according to a proper ratio and are used as the extreme pressure agent, so that the cutting oil finished product can obtain high extreme pressure and wear resistance at the same time; besides, the lard oil, the extreme pressure agent, the corrosion inhibitor and the oil mist resistant agent are combined and have a synergistic effect, so that the prepared cutting oil finished product effectively has excellent cooling property and extreme pressure wear resistance, and optimization of product processing is facilitated. And benzotriazole and undecanedioic acid are compounded to form a corrosion inhibitor, so that the prepared cutting oil finished product can effectively have an excellent anti-rust effect, and a workpiece can be protected from being rusted.

Description

Technical Field

[0001] The invention belongs to the technical field of metal processing oils, and in particular relates to a cutting oil for 5-series and 6-series composite aluminum alloys. Background Art

[0002] In modern industrial production, aluminum alloys are widely used in various fields due to their excellent properties, such as low density, good corrosion resistance, high strength and good processing performance, especially 5-series and 6-series composite aluminum alloys. 5-series aluminum alloys use magnesium as the main alloying element, with good corrosion resistance, weldability and medium strength; 6-series aluminum alloys use magnesium and silicon as the main alloying elements, with good strength, machinability and corrosion resistance. These two series of composite aluminum alloys play an important role in industries such as aerospace, automobile manufacturing, and electronic equipment. However, there are some challenges in cutting 5-series and 6-series composite aluminum alloys. On the one hand, due to the relatively low hardness of aluminum alloys, it is easy to produce tool sticking during cutting, resulting in increased tool wear, reduced processing efficiency and workpiece surface quality. On the other hand, aluminum alloys are prone to react with moisture in the air during processing, resulting in rust, which affects the appearance and performance of the workpiece. In order to solve these problems, it is necessary to develop a cutting oil specifically for 5-series and 6-series composite aluminum alloys. This cutting oil should have excellent extreme pressure and anti-wear properties, be able to form a solid lubricating film during the cutting process, reduce the friction between the tool and the workpiece, reduce tool wear, improve processing efficiency and workpiece surface quality. At the same time, the cutting oil should also have good rust resistance, which can prevent aluminum alloy workpieces from rusting during processing and storage.

[0003] Cutting oil plays an important role in mechanical processing and is the main cooling method in metal cutting. At present, although there are some cutting oil products on the market, they still have problems such as insufficient extreme pressure wear resistance or poor rust resistance. Therefore, developing a cutting oil with excellent extreme pressure wear resistance and rust resistance is of great practical significance for improving the processing quality of 5 series and 6 series composite aluminum alloys. Summary of the invention

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

[0005] The purpose of the present 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 the present invention was purchased from Wuhan Adama New Energy Co., Ltd. and was a light yellow oily liquid with a kinematic viscosity (40°C) of 90 mm 2 / s, compared with traditional vegetable oils, lard has less free fat, is not easy to become rancid, can more effectively reduce knife and chip sticking, improve the smoothness of the product, and also has a certain smoke suppression ability.

[0009] As a preferred technical solution of the present invention, the extreme pressure agent includes ammonium phosphate 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, which was purchased from Xipeng Environmental Protection Technology (Luoyang) Co., Ltd., model number XP349. Xipeng XP349 has high extreme pressure properties, can effectively smooth the cut surface of the workpiece, and can also improve the wear resistance of the tool.

[0012] Furthermore, the polyether includes any one of propylene glycol random polyether PPE-1500, butanol random polyether BPE-1500 and isotridecyl alcohol random polyether TPE-1000. The aforementioned polyethers are all purchased from Hai'an Petrochemical Plant in Jiangsu Province. The main chemical components are polyoxyethylene-polyoxypropylene copolymers, all of which have good extreme pressure and wear resistance and have the ability to protect tools during heavy-load processing.

[0013] As a preferred technical solution of the present invention, the corrosion inhibitor includes benzotriazole and undecanedicarboxylic acid.

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

[0015] As a preferred technical solution 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 comprises the following steps:

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

[0018] S2. Add corrosion inhibitor and anti-oil mist agent to the intermediate material A in sequence, control the temperature and speed, and stir 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°C, 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°C, the speed is 400-500rpm, and the time is 15-20min.

[0021] Beneficial effects of the present invention:

[0022] (1) The present invention selects ammonium phosphate and polyether and sets a suitable ratio as extreme pressure agents, and uses ammonium phosphate to break through the high adsorption barrier of polyether on the friction surface to generate a protective film with a friction-reducing effect, so that the cutting oil product can simultaneously obtain high extreme pressure and anti-wear properties; on this basis, the present invention combines lard, extreme pressure agent, corrosion inhibitor and anti-oil mist agent, and a synergistic effect is generated among the four, so that the prepared cutting oil product has excellent cooling property and extreme pressure and anti-wear properties. When the cutting oil product produced by the present invention is used, it can quickly absorb heat during the processing process to inhibit the oil mist generated by the volatilization of palm oil, reduce deformation caused by heat, and prevent strip cracks from occurring in the test piece, which is helpful for optimizing product processing.

[0023] (2) The present invention combines benzotriazole and undecanedicarboxylic acid 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 surface of the test piece, and undecanedicarboxylic acid with a longer hydrocarbon group assists in forming a thicker adsorption film. The tighter adsorption between the hydrocarbon groups of the polar molecules is used to increase the firmness of the adsorption film, thereby effectively preventing the penetration of corrosive media, and effectively making the finished cutting oil have excellent anti-rust effect, which can protect the workpiece from rust. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The lard used in the present invention was purchased from Wuhan Adama New Energy Co., Ltd., and the kinematic viscosity (40°C) was 90 mm 2 / s; the Xipeng XP349 used was purchased from Xipeng Environmental Protection Technology (Luoyang) Co., Ltd., model XP349; the propylene glycol random polyether PPE-1500, butanol random polyether BPE-1500 and isotridecyl alcohol random polyether TPE-1000 used were all purchased from Hai'an Petrochemical Plant in Jiangsu Province, and the main chemical components were all polyoxyethylene-polyoxypropylene copolymers; the above will not be repeated later.

[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 Xipeng XP349 and propylene glycol random polyether PPE-1500 in a mass ratio of 52.5:45;

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

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

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

[0033] S2. Add benzotriazole, undecane dibasic acid and polyisobutylene PB2400 to the intermediate material A in sequence, control the temperature at 35°C and the speed at 500 rpm and stir 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 Xipeng XP349 and isomeric tridecanol random polyether TPE-1000 in a mass ratio of 50:50;

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

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

[0040] S1. Add lard, Xipeng XP349 and isomeric tridecanol random polyether TPE-1000 to palm oil in sequence, control the temperature at 40°C and the speed at 450 rpm and stir for 20 minutes to obtain intermediate material A;

[0041] S2. Add benzotriazole, undecanedicarboxylic acid and polyisobutylene PB2400 to the intermediate material A in sequence, control the temperature at 40°C and the speed at 400 rpm and stir for 15 minutes 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 Xipeng XP349 and butanol random polyether BPE-1500 in a mass ratio of 55:47.5;

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

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

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

[0050] S2. Add benzotriazole, undecane dibasic acid and polyisobutylene PB2400 to the intermediate material A in sequence, control the temperature at 37.5°C and the speed at 450 rpm, and stir for 17.5 minutes to obtain the finished cutting oil.

[0051] Comparative Example 1

[0052] Compared with Example 1, the difference is that in Example 1, Xipeng XP349 is not added, 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] 70 parts by weight of palm oil, 19 parts by weight of lard, 15 parts by weight of extreme pressure agent, 0.2 parts by weight of corrosion inhibitor, and 0.8 parts by weight of polyisobutylene PB2400.

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

[0055] The corrosion inhibitor comprises benzotriazole and undecanedicarboxylic 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 comprises the following steps:

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

[0058] S2. Add benzotriazole, undecane dibasic acid and polyisobutylene PB2400 to the intermediate material A in sequence, control the temperature at 35°C and the speed at 500 rpm and stir for 20 minutes to obtain the finished cutting oil.

[0059] Comparative Example 2

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

[0061]

[0062] The extreme pressure agent includes Xipeng XP349;

[0063] The corrosion inhibitor comprises benzotriazole and undecanedicarboxylic 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 comprises the following steps:

[0065] S1. Add lard and Xipeng XP349 to palm oil in sequence, control the temperature at 50°C and the speed at 400 rpm, and stir for 15 min to obtain intermediate material A;

[0066] S2. Add benzotriazole, undecane dibasic acid and polyisobutylene PB2400 to the intermediate material A in sequence, control the temperature at 35°C and the speed at 500 rpm and stir for 20 minutes to obtain the finished cutting oil.

[0067] Comparative Example 3

[0068] Compared with Example 1, the difference is that in Comparative Example 3, lard is not added, and the weight portions of the extreme pressure agent, the corrosion inhibitor and the polyisobutylene PB2400 are changed, that is, the cutting oil includes the following raw materials in weight portions:

[0069]

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

[0071] The corrosion inhibitor comprises benzotriazole and undecanedicarboxylic 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 comprises the following steps:

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

[0074] S2. Add benzotriazole, undecane dibasic acid and polyisobutylene PB2400 to the intermediate material A in sequence, control the temperature at 35°C and the speed at 500 rpm and stir for 20 minutes to obtain the finished cutting oil.

[0075] Comparative Example 4

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

[0077]

[0078] The corrosion inhibitor comprises benzotriazole and undecanedicarboxylic 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 comprises the following steps:

[0080] S1. Add lard to palm oil in sequence, control the temperature at 50°C and the speed at 400 rpm, and stir for 15 min to obtain intermediate material A;

[0081] S2. Add benzotriazole, undecane dibasic acid and polyisobutylene PB2400 to the intermediate material A in sequence, control the temperature at 35°C and the speed at 500 rpm and stir for 20 minutes to obtain the finished cutting oil.

[0082] Comparative Example 5

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

[0084]

[0085]

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

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

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

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

[0090] Comparative Example 6

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

[0092]

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

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

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

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

[0097] S2. Add benzotriazole and undecanedicarboxylic acid to the intermediate material A in sequence, control the temperature at 35°C and the speed at 500 rpm, and stir for 20 minutes to obtain the finished cutting oil.

[0098] Comparative Example 7

[0099] Compared with Example 1, the difference is that in Comparative Example 7, no benzotriazole is added, and the corrosion inhibitor only includes undecane dibasic acid, that is, the cutting oil includes the following raw materials in parts by weight:

[0100]

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

[0102] The corrosion inhibitor includes undecanedicarboxylic acid;

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

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

[0105] S2. Add undecane dibasic acid and polyisobutylene PB2400 to the intermediate material A in sequence, control the temperature at 35°C and the speed at 500 rpm and stir for 20 minutes to obtain the finished cutting oil.

[0106] Comparative Example 8

[0107] Compared with Example 1, the difference is that in Comparative Example 8, no undecane dibasic acid is added, and the corrosion inhibitor only includes benzotriazole, that is, the cutting oil includes the following raw materials in parts by weight:

[0108]

[0109]

[0110] The extreme pressure agent comprises Xipeng 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 comprises the following steps:

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

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

[0115] Test Example 1

[0116] Extreme pressure and wear resistance test: A four-ball friction tester model MS-10J of Xiamen Tianji Automation Co., Ltd. was used according to the test standard GB / T12583-1998, and the test conditions were: 1780rpm, 12s. The cutting oil products prepared in Examples 1-3 and Comparative Examples 1-6 were tested for maximum no-seizure load P B Test. The maximum load at which the steel ball does not get stuck under lubrication. The higher the value of this indicator, the better the lubrication performance. The results are shown in Table 1.

[0117] Table 1

[0118]

[0119]

[0120] It can be seen from the data of Examples 1-3 and Comparative Examples 1-2 in Table 1 that the present invention selects ammonium phosphate and polyether and sets a suitable ratio as extreme pressure agents, so that the finished cutting oil can simultaneously obtain high extreme pressure and anti-wear properties; and it can be seen from the data of Examples 1-3 and Comparative Examples 3-6 that the finished cutting oil prepared by the present invention has excellent extreme pressure and anti-wear properties.

[0121] Test Example 2

[0122] Rust prevention test: According to GB / T 6144-2010, the finished cutting oils obtained in Examples 1-3 and Comparative Examples 7-8 were subjected to single-piece and stacked rust prevention tests. Specifically, in the single-piece test, after continuous testing in a constant temperature box 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 test, multiple groups of samples were set, and after continuous testing in a constant temperature box for 4 hours, two groups of test pieces were taken out every 0.5 hours, the test pieces were opened, and the test liquid was wiped off with absorbent cotton dipped in anhydrous ethanol, and the two stacked surfaces within 1 mm from the edge of the test piece were immediately observed for rust and obvious overprinting. If rust or obvious overprinting was observed on any group of test pieces, the test was terminated, and the time was recorded in Table 2; the results are shown in Table 2.

[0123] Table 2

[0124] Single piece corrosion time / h Lamination corrosion time / h 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] It can be seen from Table 2 that the cutting oil product prepared by the present invention has an excellent anti-rust effect and can protect the workpiece from rust.

[0126] In the description of the specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0127] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the invention or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. A 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:

2. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 1, characterized in that: The extreme pressure agent includes ammonium phosphate and polyether.

3. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 2, characterized in that: The mass ratio of the ammonium phosphate salt to the polyether is 50-55:45-50.

4. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 2, characterized in that: The ammonium phosphate salt includes Xipeng XP349.

5. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 2, characterized in that: The polyether includes any one of propylene glycol random polyether PPE-1500, butanol random polyether BPE-1500 and isomeric tridecanol random polyether TPE-1000.

6. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 1, characterized in that: The corrosion inhibitor comprises benzotriazole and undecanedicarboxylic acid.

7. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 6, characterized in that: The mass ratio of the benzotriazole to the undecanedicarboxylic acid is 62-75:25-30.

8. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 1, characterized in that: The anti-oil mist agent includes polyisobutylene PB2400.

9. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 1, characterized in that: The preparation method of the cutting oil specifically comprises the following steps: S1. Add lard and extreme pressure agent to palm oil in sequence, and stir under controlled temperature and speed to obtain intermediate material A; S2. Add corrosion inhibitor and anti-oil mist agent to the intermediate material A in sequence, control the temperature and speed, and stir to obtain the finished cutting oil.

10. The cutting oil for 5-series and 6-series composite aluminum alloys according to claim 9, characterized in that: The temperature of the temperature-controlled and speed-controlled stirring in step S1 is 40-50°C, the speed is 400-500rpm, and the time is 15-20min; the temperature of the temperature-controlled and speed-controlled stirring in step S2 is 35-40°C, the speed is 400-500rpm, and the time is 15-20min.

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