Enameled wire lubricating oil and preparation method thereof

Abstract

The present application relates to the field of enameled wire lubricants, and specifically discloses an enameled wire lubricant and a preparation method thereof. The raw materials used in the enameled wire lubricant include solid wax and industrial solvent oil, wherein the weight ratio of the solid wax to the industrial solvent oil is (2-4):(96-98); the preparation method is as follows: the solid wax is heated and dissolved in an oil bath at a temperature of 80°C-90°C to obtain a transparent wax liquid, and then the transparent wax liquid is added to the industrial solvent oil while stirring, and the mixture is stirred for 2h-2.5h to obtain the enameled wire lubricant. The enameled wire lubricant of the present application has strong adhesion to the enameled wire, good wear resistance and lubricity, and can provide better protection and lubrication for the enameled wire, so that the enameled wire can withstand a minimum rotation speed of 15,000 r / min, and the various indicators of the wound wire package meet the standard requirements.

Description

Technical Field

[0001] The present application relates to the field of enameled wire lubricants, and more specifically, to an enameled wire lubricant and a preparation method thereof. Background Art

[0002] Enameled wire, a major type of winding wire, consists of a conductor and an insulation layer. It is a primary raw material for products such as motors and electrical appliances. In recent years, the electric power industry has experienced sustained and rapid growth, along with the rapid development of household appliances, creating a broad market for enameled wire applications. During the enameled wire manufacturing process, after the copper wire is coated with insulating varnish and cured, a layer of lubricant is applied to the surface. This protects the insulating varnish from damage when passing through mechanical components such as the winding machine's guide pulleys during coil winding, and ensures neater wire arrangement and tighter winding.

[0003] For a long time, enameled wire production in my country has primarily used kerosene and waterless transformer oil as lubricants for the insulation surface. However, with the continuous improvement of winding machines, winding speeds have increased from 4,000 rpm to 12,000-15,000 rpm, placing higher demands on the wear resistance of enameled wire, and existing lubricants are no longer sufficient. Currently, a number of domestically produced and imported enameled wire lubricants are available on the market, most of which are wax solutions, with some being resin solutions. However, long-term production practice has revealed that these lubricants have a short adhesion time to the enameled wire, leaving much room for improvement in terms of wear resistance and lubricity. Summary of the Invention

[0004] In order to solve the above technical problems, the present application provides an enameled wire arrangement lubricant and a preparation method thereof.

[0005] In the first aspect, the present application provides an enameled wire lubricant, which adopts the following technical solution:

[0006] A lubricating oil for enameled wire arrangement, the raw materials used include solid wax and industrial solvent oil; wherein the weight ratio of the solid wax to the industrial solvent oil is (2-4):(96-98).

[0007] By adopting the above technical solution, the present application uses solid wax instead of traditional liquid wax mixed with industrial solvents to make lubricating oil, which can adhere to the enameled wire for a longer time, and the formed film is smoother and stronger, which can better lubricate and protect the enameled wire.

[0008] Preferably, the weight ratio of the solid wax to industrial solvent oil is 3:97.

[0009] By adopting the above technical solution, the present application further controls the weight ratio of solid wax and industrial solvent oil, which can reduce the static friction coefficient of the enameled wire by 4.94% and the dynamic friction coefficient by 7.32%, further improving the lubricity and wear resistance of the enameled wire.

[0010] Preferably, the solid wax includes fully refined paraffin and one or more of beeswax, palm wax, microcrystalline wax, montan wax, and polyethylene wax; wherein the amount of fully refined paraffin is 55wt%-65wt% of the total amount of solid wax.

[0011] By adopting the above technical solution, fully refined paraffin wax is a wax extracted from petroleum, which has excellent wear resistance, oxidation resistance and fluidity, and also has good low-temperature resistance. Adding it to lubricating oil can make the lubricating oil have good wear resistance and lubricity. However, since fully refined paraffin wax has poor adhesion, it cannot adhere well to the enameled wire by itself. Therefore, the present application adopts a mixture of fully refined paraffin wax and one or more of beeswax, palm wax, microcrystalline wax, montan wax, and polyethylene wax, so that the adhesion of the prepared lubricating oil to the enameled wire is stronger, and beeswax, palm wax, microcrystalline wax, montan wax, and polyethylene wax can be combined with fully refined paraffin wax to improve the lubricity and wear resistance of the lubricating oil, thereby better playing the role of lubricating and protecting the enameled wire.

[0012] Preferably, the solid wax includes fully refined paraffin wax, beeswax and palm wax.

[0013] By adopting the above technical solution, the present application selects beeswax, palm wax, and fully refined paraffin wax for use in combination, taking advantage of the good compatibility of these three ingredients in the lubricant to further improve the lubricity and wear resistance of the lubricant. Specifically, palm wax can be combined with fully refined paraffin wax to further enhance the thermal stability and oxidation resistance of the lubricant, while beeswax can further promote the adhesion and lubricity of the lubricant.

[0014] Preferably, the weight ratio of the fully refined paraffin wax, beeswax and palm wax is (55-65):(28-32):(7-13).

[0015] By adopting the above technical solution, the present application controls the usage ratio of fully refined paraffin, beeswax and palm wax within the above range, which can give full play to the synergistic effect of the three and make the various properties of the lubricating oil reach the optimal level.

[0016] Preferably, the weight ratio of the fully refined paraffin wax, beeswax and palm wax is 60:30:10.

[0017] By adopting the above technical solution, the present application further accurately controls the usage ratio of fully refined paraffin wax, beeswax and palm wax, which can reduce the static friction coefficient and dynamic friction coefficient of the enameled wire by 7.41%, further improving the lubricity and wear resistance of the lubricating oil.

[0018] Preferably, the fully refined paraffin wax is 56 degree fully refined paraffin wax.

[0019] By adopting the above technical solution, 56-degree fully refined paraffin wax refers to fully refined paraffin wax with a melting point of 56 degrees. Compared with fully refined paraffin waxes with other melting points, such as 52 degrees, 54 degrees, 58 degrees, 60 degrees, 62 degrees, 64 degrees, 66 degrees, 68 degrees, and 70 degrees, 56-degree fully refined paraffin wax has a moderate molecular chain and better compatibility with palm wax and beeswax. Therefore, the use of 56-degree fully refined paraffin wax in combination with beeswax and palm wax can maximize the synergistic effect of the three, thereby achieving the best lubricity and wear resistance of the lubricant, which can provide better protection for the enameled wire. In addition, the use of 56-degree fully refined paraffin wax in combination with beeswax and palm wax to make a lubricant can make the color of the lubricant lighter, reducing the possibility of the lubricant affecting the original appearance color of the enameled wire. At the same time, the cost of fully refined paraffin wax is low and easy to purchase.

[0020] Preferably, the industrial solvent oil includes No. 120 solvent oil and No. 200 solvent oil; wherein the weight ratio of No. 120 solvent oil to No. 200 solvent oil is (2-4):(6-8).

[0021] Preferably, the weight ratio of No. 120 solvent oil to No. 200 solvent oil is 3:7.

[0022] By adopting the above technical solution, the present application uses a mixture of No. 120 solvent oil and No. 200 solvent oil as the solvent, and further controls the usage ratio of the two. Since the two have different volatilization rates, their combined use can volatilize at the appropriate time to produce an appropriate lubricating film thickness.

[0023] In a second aspect, the present application provides a method for preparing a lubricating oil for an enameled wire arrangement, comprising the following steps:

[0024] The solid wax oil bath is heated and dissolved at a temperature of 80°C-90°C to obtain a transparent wax liquid, and then the transparent wax liquid is added to the industrial solvent oil while stirring, and the mixture is stirred for 2h-2.5h to obtain the enameled wire arrangement lubricating oil.

[0025] By adopting the above technical solution, the present application first crushes and mixes the solid wax, then places it into the oil bath heater of a stirred tank, adds a dissolved amount of No. 120 solvent oil, and heats it at a temperature of 80°C-90°C until the solid wax dissolves into a transparent liquid. Then, the remaining No. 120 solvent oil and No. 200 solvent oil are mixed and added to the stirred tank, stirring is started, and the dissolved transparent wax liquid is quickly added thereto, and stirred for 2h-2.5h to obtain the enameled wire arrangement lubricant. The preparation method of the present application has simple steps, is easy to operate, and is suitable for large-scale industrial production.

[0026] In summary, this application has the following beneficial technical effects:

[0027] 1. The enameled wire lubricant disclosed herein has strong adhesion to the enameled wire, good wear resistance and lubricity, and can provide better protection and lubrication for the enameled wire. This allows the enameled wire to withstand a minimum speed of 15,000 rpm, and the various indicators of the wound wire package meet standard requirements.

[0028] 2. The lubricant for the enameled wire arrangement of this application is lighter in color, which reduces the possibility of the lubricant affecting the original appearance color of the enameled wire. At the same time, the cost of fully refined paraffin wax is low and easy to purchase;

[0029] 3. The preparation method of the enameled wire arrangement lubricant of the present application has simple steps, is easy to operate, and is suitable for large-scale industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 (Left) is a product picture of the lubricating oil of Comparative Example 1 of the present application;

[0031] Figure 1 (Right) is a product picture of the lubricating oil of Example 5 of the present application. DETAILED DESCRIPTION

[0032] The present application is further described in detail below with reference to the accompanying drawings, embodiments and comparative examples.

[0033] <Material Source>

[0034] Unless otherwise specified, the raw materials used in this application are all commercially available products, specifically: 52% fully refined paraffin wax, 54% fully refined paraffin wax, 56% fully refined paraffin wax, and 58% fully refined paraffin wax were purchased from Guangzhou Yuting Chemical Technology Co., Ltd., with brands 52#, 54#, 56#, and 58#, respectively;

[0035] 60-degree fully refined paraffin wax was purchased from Zhengzhou Shuoyuan Biotechnology Co., Ltd., brand 60#;

[0036] Beeswax was purchased from Shaanxi Tangyao Biotechnology Co., Ltd.;

[0037] Palm wax was purchased from Wuhan Jixinyibang Biotechnology Co., Ltd.;

[0038] Microcrystalline wax was purchased from Jiangsu Pules Biotechnology Co., Ltd.;

[0039] Montan wax was purchased from Jinan Mingxin Chemical Co., Ltd.

[0040] Polyethylene wax was produced by Mitsui Chemicals, Inc., model DF740;

[0041] No. 120 solvent oil and No. 200 solvent oil were purchased from Jinan Hongju Chemical Co., Ltd.

[0042] <Example>

[0043] Example 1.1

[0044] A method for preparing lubricating oil for enameled wire arrangement comprises the following steps:

[0045] (1) 2 kg of solid wax (1.1 kg of 52-degree fully refined paraffin wax and 0.9 kg of beeswax) were crushed and mixed, placed in an oil bath heater in a stirred tank, and 2 kg of No. 120 solvent oil was added. The temperature was set to 80°C-90°C, and the switch was turned on to heat until the solid wax was completely dissolved into a transparent liquid to obtain liquid wax;

[0046] (2) 17.6 kg of No. 120 solvent oil and 78.4 kg of No. 200 solvent oil were mixed and added to a stirring tank, stirring was started, and the liquid wax obtained in step (1) was quickly added and stirred for 2 h to 2.5 h to obtain the enameled wire lubricating oil.

[0047] Example 1.2

[0048] A method for preparing lubricating oil for enameled wire arrangement comprises the following steps:

[0049] (1) 2 kg of solid wax (1.3 kg of 60-degree fully refined paraffin wax and 0.7 kg of palm wax) were crushed and mixed, placed in an oil bath heater of a stirred tank, and 2 kg of No. 120 solvent oil was added. The temperature was set to 80°C-90°C, and the switch was turned on to heat until the solid wax was completely dissolved into a transparent liquid to obtain liquid wax;

[0050] (2) 22 kg of No. 120 solvent oil and 72 kg of No. 200 solvent oil were mixed and added to a stirring tank, stirring was started, and the liquid wax obtained in step (1) was quickly added and stirred for 2 h to 2.5 h to obtain the enameled wire lubricating oil.

[0051] Example 1.3

[0052] A method for preparing lubricating oil for enameled wire arrangement comprises the following steps:

[0053] (1) 4 kg of solid wax (2.2 kg of 54-degree fully refined paraffin wax and 1.8 kg of microcrystalline wax) were crushed and mixed, placed in an oil bath heater of a stirred tank, and 4 kg of No. 120 solvent oil was added. The temperature was set to 80°C-90°C, and the switch was turned on to heat until the solid wax was completely dissolved into a transparent liquid to obtain liquid wax;

[0054] (2) 34.4 kg of No. 120 solvent oil and 57.6 kg of No. 200 solvent oil were mixed and added to a stirring tank, stirring was started, and the liquid wax obtained in step (1) was quickly added and stirred for 2 h to 2.5 h to obtain the enameled wire lubricating oil.

[0055] Example 1.4

[0056] A method for preparing lubricating oil for enameled wire arrangement comprises the following steps:

[0057] (1) 4 kg of solid wax (2.6 kg of 58-degree fully refined paraffin wax and 1.4 kg of polyethylene wax) were crushed and mixed, placed in an oil bath heater of a stirred tank, and 4 kg of No. 120 solvent oil was added. The temperature was set to 80°C-90°C, and the switch was turned on to heat until the solid wax was completely dissolved into a transparent liquid to obtain liquid wax;

[0058] (2) 28.7 kg of No. 120 solvent oil and 65.3 kg of No. 200 solvent oil were mixed and added to a stirring tank, stirring was started, and the liquid wax obtained in step (1) was quickly added and stirred for 2 h to 2.5 h to obtain the enameled wire lubricating oil.

[0059] Examples 2.1-2.4

[0060] A method for preparing lubricating oil for enameled wire arrangement is different from that of Examples 1.1-1.4 in that the weight ratio of solid wax to industrial solvent oil is 3:97, and the rest is the same as that of Examples 1.1-1.4; specifically,

[0061] In Example 2.1, 52-degree fully refined paraffin wax is 1.65 kg, beeswax is 1.35 kg, No. 120 solvent oil in step (1) is 3 kg, No. 120 solvent oil in step (2) is 16.4 kg, and No. 200 solvent oil in step (2) is 77.6 kg;

[0062] In Example 2.2, 60-degree fully refined paraffin wax is 1.95 kg, palm wax is 1.05 kg, No. 120 solvent oil in step (1) is 3 kg, No. 120 solvent oil in step (2) is 21.25 kg, and No. 200 solvent oil in step (2) is 72.75 kg;

[0063] In Example 2.3, 54-degree fully refined paraffin wax is 1.65 kg, microcrystalline wax is 1.35 kg, No. 120 solvent oil in step (1) is 3 kg, No. 120 solvent oil in step (2) is 35.8 kg, and No. 200 solvent oil in step (2) is 58.2 kg;

[0064] In Example 2.4, the amount of 58-degree fully refined paraffin wax is 1.95 kg, the amount of polyethylene wax is 1.05 kg, the amount of No. 120 solvent oil in step (1) is 3 kg, the amount of No. 120 solvent oil in step (2) is 29.3 kg, and the amount of No. 200 solvent oil in step (2) is 64.7 kg.

[0065] Examples 3.1-3.4

[0066] A method for preparing an enameled wire lubricant, which differs from Examples 2.1-2.4 in that the solid wax comprises fully refined paraffin wax, beeswax, and palm wax in a weight ratio of (55-65):(28-32):(7-13); specifically,

[0067] In Example 3.1, the weight ratio of 52% fully refined paraffin wax, beeswax, and palm wax is 55:32:7; wherein, the amount of 52% refined paraffin wax is 1.76 kg, the amount of beeswax is 1.02 kg, and the amount of palm wax is 0.22 kg;

[0068] In Example 3.2, the weight ratio of 60% fully refined paraffin wax, beeswax, and palm wax is 65:28:13; wherein, 60% refined paraffin wax is 1.84 kg, beeswax is 0.79 kg, and palm wax is 0.37 kg;

[0069] In Example 3.3, the weight ratio of 54% fully refined paraffin wax, beeswax, and palm wax is 55:28:7; wherein, the amount of 54% refined paraffin wax is 1.83 kg, the amount of beeswax is 0.93 kg, and the amount of palm wax is 0.24 kg;

[0070] In Example 3.4, the weight ratio of 58-degree fully refined paraffin wax, beeswax and palm wax is 65:32:13; among them, the 58-degree refined paraffin wax is 1.77 kg, the beeswax is 0.87 kg, and the palm wax is 0.36 kg.

[0071] Examples 4.1-4.4

[0072] A method for preparing lubricating oil for enameled wire arrangement, which differs from that of Examples 3.1-3.4 in that the weight ratio of fully refined paraffin wax, beeswax and palm wax is 60:30:10; specifically,

[0073] In Example 4.1, 1.8 kg of 52-degree refined paraffin wax, 0.9 kg of beeswax, and 0.3 kg of palm wax were used;

[0074] In Example 4.2, 60-degree refined paraffin wax is 1.8 kg, beeswax is 0.9 kg, and palm wax is 0.3 kg;

[0075] In Example 4.3, 1.8 kg of 54-degree refined paraffin wax, 0.9 kg of beeswax, and 0.3 kg of palm wax were used;

[0076] In Example 4.4, the amount of 58-degree refined paraffin wax is 1.8 kg, the amount of beeswax is 0.9 kg, and the amount of palm wax is 0.3 kg.

[0077] Examples 5.1-5.4

[0078] A method for preparing lubricating oil for enameled wire arrangement is different from that of Examples 4.1-4.4 in that 56-degree fully refined paraffin wax is used, and the rest is the same as that of Examples 4.1-4.4.

[0079] Examples 6.1-6.10

[0080] A method for preparing lubricating oil for enameled wire arrangement is different from that of Example 5.1 in that the solid wax components in each example are different, and the rest are the same as those in Example 5.1; specifically,

[0081] In Example 6.1, 1.8 kg of 56-degree refined paraffin wax, 0.9 kg of beeswax, and 0.3 kg of microcrystalline wax were used;

[0082] In Example 6.2, 1.8 kg of 56% refined paraffin wax, 0.9 kg of beeswax, and 0.3 kg of montan wax were used;

[0083] In Example 6.3, 1.8 kg of 56-degree refined paraffin wax, 0.9 kg of beeswax, and 0.3 kg of polyethylene wax were used;

[0084] In Example 6.4, 1.8 kg of 56% refined paraffin wax, 0.9 kg of palm wax, and 0.3 kg of microcrystalline wax were used;

[0085] In Example 6.5, 1.8 kg of 56% refined paraffin wax, 0.9 kg of palm wax, and 0.3 kg of montan wax were used;

[0086] In Example 6.6, 1.8 kg of 56-degree refined paraffin wax, 0.9 kg of palm wax, and 0.3 kg of polyethylene wax were used;

[0087] In Example 6.7, 1.8 kg of 56% refined paraffin wax, 0.9 kg of microcrystalline wax, and 0.3 kg of montan wax were used;

[0088] In Example 6.8, 1.8 kg of 56% refined paraffin wax, 0.9 kg of microcrystalline wax, and 0.3 kg of polyethylene wax were used;

[0089] In Example 6.9, 1.8 kg of 56% refined paraffin wax, 0.9 kg of montan wax, and 0.3 kg of polyethylene wax were used;

[0090] In Example 6.10, the amount of 56-degree refined paraffin wax is 1.8 kg, the amount of polyethylene wax is 0.9 kg, and the amount of beeswax is 0.3 kg.

[0091] Examples 7.1-7.4

[0092] A method for preparing lubricating oil for enameled wire arrangement is different from that of Examples 1.1-1.4 in that the weight ratio of No. 120 solvent oil to No. 200 solvent oil is 3:7, and the rest is the same as that of Examples 1.1-1.4; specifically,

[0093] In Example 7.1, the amount of No. 120 solvent oil in step (1) is 2 kg, the amount of No. 120 solvent oil in step (2) is 27.4 kg, and the amount of No. 200 solvent oil in step (2) is 68.6 kg;

[0094] In Example 7.2, the amount of No. 120 solvent oil in step (1) is 2 kg, the amount of No. 120 solvent oil in step (2) is 26.8 kg, and the amount of No. 200 solvent oil in step (2) is 67.2 kg;

[0095] In Example 7.3, the amount of No. 120 solvent oil in step (1) is 4 kg, the amount of No. 120 solvent oil in step (2) is 24.8 kg, and the amount of No. 200 solvent oil in step (2) is 67.2 kg;

[0096] In Example 7.4, the amount of No. 120 solvent oil in step (1) is 4 kg, the amount of No. 120 solvent oil in step (2) is 25.4 kg, and the amount of No. 200 solvent oil in step (2) is 68.6 kg.

[0097] Examples 8.1-8.4

[0098] A method for preparing lubricating oil for enameled wire arrangement, which differs from that of Examples 2.1-2.4 in that: the solid wax comprises fully refined paraffin wax, beeswax, and palm wax in a weight ratio of 50:45:5; specifically,

[0099] In Example 8.1, 1.5 kg of 52-proof refined paraffin wax, 1.35 kg of beeswax, and 0.15 kg of palm wax were used;

[0100] In Example 8.2, 60-degree refined paraffin wax is 1.5 kg, beeswax is 1.35 kg, and palm wax is 0.15 kg;

[0101] In Example 8.3, 1.5 kg of 54-degree refined paraffin wax, 1.35 kg of beeswax, and 0.15 kg of palm wax were used;

[0102] In Example 8.4, the amount of 58-degree refined paraffin wax is 1.5 kg, the amount of beeswax is 1.35 kg, and the amount of palm wax is 0.15 kg.

[0103] Examples 9.1-9.4

[0104] A method for preparing lubricating oil for enameled wire arrangement, which differs from that of Examples 2.1-2.4 in that: the solid wax comprises fully refined paraffin wax, beeswax, and palm wax in a weight ratio of 70:10:20; specifically,

[0105] In Example 9.1, 2.1 kg of 52-degree refined paraffin wax, 0.3 kg of beeswax, and 0.6 kg of palm wax were used;

[0106] In Example 9.2, 60-degree refined paraffin wax is 2.1 kg, beeswax is 0.3 kg, and palm wax is 0.6 kg;

[0107] In Example 9.3, 2.1 kg of 54-degree refined paraffin wax, 0.3 kg of beeswax, and 0.6 kg of palm wax were used;

[0108] In Example 9.4, the amount of 58-degree refined paraffin wax is 2.1 kg, the amount of beeswax is 0.3 kg, and the amount of palm wax is 0.6 kg.

[0109] <Comparative Example>

[0110] Comparative Example 1

[0111] The lubricating oil was prepared according to the preparation method of Example 1 in the Chinese patent publication number CN 102181318A.

[0112] Comparative Examples 2.1-2.4

[0113] The difference from Example 1.1-1.4 is that the weight ratio of solid wax to industrial solvent oil is 1:100, and the rest is the same as Example 1.1-1.4; specifically,

[0114] In Comparative Example 2.1, the amount of 52-degree fully refined paraffin wax is 0.55 kg, the amount of beeswax is 0.45 kg, the amount of No. 120 solvent oil in step (1) is 1 kg, the amount of No. 120 solvent oil in step (2) is 19 kg, and the amount of No. 200 solvent oil in step (2) is 80 kg;

[0115] In comparative example 2.2, the amount of 60-degree fully refined paraffin wax is 0.65 kg, the amount of palm wax is 0.35 kg, the amount of No. 120 solvent oil in step (1) is 1 kg, the amount of No. 120 solvent oil in step (2) is 24 kg, and the amount of No. 200 solvent oil in step (2) is 75 kg;

[0116] In comparative example 2.3, the amount of 54-degree fully refined paraffin wax is 0.55 kg, the amount of microcrystalline wax is 0.45 kg, the amount of No. 120 solvent oil in step (1) is 1 kg, the amount of No. 120 solvent oil in step (2) is 39 kg, and the amount of No. 200 solvent oil in step (2) is 60 kg;

[0117] In comparative example 2.4, the amount of 58-degree fully refined paraffin wax is 0.65 kg, the amount of polyethylene wax is 0.35 kg, the amount of No. 120 solvent oil in step (1) is 1 kg, the amount of No. 120 solvent oil in step (2) is 32.3 kg, and the amount of No. 200 solvent oil in step (2) is 66.7 kg.

[0118] Comparative Examples 3.1-3.4

[0119] The difference from Example 1.1-1.4 is that the weight ratio of solid wax to industrial solvent oil is 10:90, and the rest is the same as Example 1.1-1.4; specifically,

[0120] In comparative example 3.1, the amount of 52-degree fully refined paraffin wax is 5.5 kg, the amount of beeswax is 4.5 kg, the amount of No. 120 solvent oil in step (1) is 10 kg, the amount of No. 120 solvent oil in step (2) is 8 kg, and the amount of No. 200 solvent oil in step (2) is 72 kg;

[0121] In comparative example 3.2, 60-degree fully refined paraffin wax is 6.5 kg, palm wax is 3.5 kg, No. 120 solvent oil in step (1) is 10 kg, No. 120 solvent oil in step (2) is 12.5 kg, and No. 200 solvent oil in step (2) is 67.5 kg;

[0122] In comparative example 3.3, the amount of 54-degree fully refined paraffin wax is 5.5 kg, the amount of microcrystalline wax is 4.5 kg, the amount of No. 120 solvent oil in step (1) is 10 kg, the amount of No. 120 solvent oil in step (2) is 26 kg, and the amount of No. 200 solvent oil in step (2) is 54 kg;

[0123] In comparative example 3.4, 58-degree fully refined paraffin wax is 6.5 kg, polyethylene wax is 3.5 kg, No. 120 solvent oil in step (1) is 10 kg, No. 120 solvent oil in step (2) is 20 kg, and No. 200 solvent oil in step (2) is 60 kg.

[0124] <Performance Testing>

[0125] 1. The lubricating oils prepared in Examples 1-8 and Comparative Examples 1-3 were applied to the outside of enameled wires with a diameter of 0.05 mm as samples. Friction tests were performed according to Appendix B of GB / T 4074.3-2008, Test Methods for Winding Wires - Part 3: Mechanical Properties. The average static and dynamic coefficients of friction for each enameled wire group were recorded.

[0126] 2. The lubricating oils prepared in Examples 1-8 and Comparative Examples 1-3 were applied to the outside of enameled wires with a diameter of 0.05 mm as samples. The wires were wound using a winding machine of the same brand. The maximum speed that each set of enameled wires could withstand was recorded. The maximum speed was defined as the speed at which the enameled wires remained unbroken and all winding parameters of the wound wire package met the standards.

[0127] The above performance test results are shown in Table 1.

[0128] Table 1 Performance test results

[0129]

[0130]

[0131] As can be seen from Table 1, after the lubricating oil prepared in Examples 1.1-1.4 of the present application is applied to the outside of the enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire is 0.081, the average dynamic friction coefficient is 0.041, and it can withstand a winding speed of 15000 r / min. The various indicators of the wound wire package meet the standard requirements. This shows that the lubricating oil prepared in Examples 1.1-1.4 of the present application has good wear resistance and lubricity, and has fully protected and lubricated the enameled wire.

[0132] After the lubricating oil prepared in Examples 2.1-2.4 was coated on the outside of an enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.077, and the average dynamic friction coefficient was 0.038, which were reduced by 4.94% and 7.32% respectively compared with Examples 1.1-1.4. This shows that the present application further controls the usage ratio of solid wax and industrial solvent oil, which can further improve the lubricity and wear resistance of the lubricating oil, and this improvement has a statistically significant difference.

[0133] After the lubricating oil prepared in Examples 3.1-3.4 was coated on the outside of the enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.054, and the average dynamic friction coefficient was 0.027, which were reduced by 29.87% and 28.95% respectively compared with Examples 2.1-2.4, and could withstand a winding speed of 17000 r / min. The various indicators of the wound wire package met the standard requirements. This shows that the use of fully refined paraffin, beeswax and palm wax in this application can greatly improve the wear resistance and lubricity of the lubricating oil, thereby providing better lubrication and protection for the enameled wire.

[0134] After the lubricating oil prepared in Examples 4.1-4.4 was coated on the outside of an enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.050, and the average dynamic friction coefficient was 0.025, which were reduced by 7.41% and 7.41% respectively compared with Examples 3.1-3.4. This shows that the present application further controls the usage ratio of fully refined paraffin wax, beeswax and palm wax, which can further improve the lubricity and wear resistance of the lubricating oil, and this improvement has a statistically significant difference.

[0135] After the lubricating oil prepared in Examples 5.1-5.4 was applied to the outside of the enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.048, and the average dynamic friction coefficient was 0.021, which were reduced by 4% and 16% respectively compared with Examples 4.1-4.4. This shows that the further selection of 56-degree fully refined paraffin wax in combination with beeswax and palm wax in this application can further improve the lubricity and wear resistance of the lubricating oil, and this improvement has a statistically significant difference. In addition, combined with Figure 1 It can be seen that the present application further adopts 56-degree fully refined paraffin wax, which can make the color of the lubricating oil lighter, reducing the possibility of the lubricating oil affecting the original appearance color of the enameled wire.

[0136] After the lubricating oil prepared in Examples 6.1-6.10 was coated on the outside of an enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.070, and the average dynamic friction coefficient was 0.035, which were increased by 45.83% and 66.67% respectively compared with Example 5. It can also withstand a winding speed of 16,000 r / min, and all indicators of the wound wire package meet the standard requirements. This shows that fully refined paraffin wax, beeswax and palm wax have good synergy. Adding the three to the lubricating oil together can make the lubricity and wear resistance of the lubricating oil reach the optimal level.

[0137] After the lubricating oil prepared in Examples 7.1-7.4 was coated on the outside of the enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.076, and the average dynamic friction coefficient was 0.037, which were reduced by 6.17% and 9.76% respectively compared with Examples 1.1-1.4. This shows that the present application further controls the usage ratio of No. 120 solvent oil and No. 200 solvent oil, which can further improve the lubricity and wear resistance of the lubricating oil, and this improvement has a statistically significant difference.

[0138] After the lubricating oil prepared in Examples 8.1-8.4 was coated on the outside of the enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.063, and the average dynamic friction coefficient was 0.033; after the lubricating oil prepared in Examples 9.1-9.4 was coated on the outside of the enameled wire with a diameter of 0.04 mm, the average static friction coefficient of the enameled wire was 0.059, and the average dynamic friction coefficient was 0.031; compared with Examples 2.1-2.4, both were reduced, but the degree of reduction was lower than the degree of reduction in Examples 3.1-3.4, which shows that the application controls the usage ratio of fully refined paraffin wax, beeswax and palm wax, which can further improve the lubricity and wear resistance of the lubricating oil.

[0139] After the lubricating oil prepared in comparative example 1 was coated on the outside of the enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.126, and the average dynamic friction coefficient was 0.068, which were significantly higher than those in Example 1. The maximum speed it could withstand was 12000 r / min, which was significantly lower than that in Example 1. Figure 1 It can be seen that the lubricating oil prepared in Comparative Example 1 is darker in color, which increases the possibility that the lubricating oil affects the original appearance color of the enameled wire.

[0140] After the lubricating oil prepared in Comparative Examples 2-3 was coated on the outside of the enameled wire with a diameter of 0.05 mm, the average static friction coefficient of the enameled wire was 0.094-0.102, the average dynamic friction coefficient was 0.047-0.051, and the maximum speed it could withstand was 13000 r / min. The lubricity and wear resistance were significantly worse than those in Example 1, which shows that the application controls the use ratio of solid wax and industrial solvent oil to improve the lubricity and wear resistance of the lubricating oil.

[0141] The embodiments of this specific implementation method are all preferred embodiments of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lubricating oil for enameled wire arrangement, characterized in that: The raw materials used include solid wax and industrial solvent oil; wherein the weight ratio of the solid wax to the industrial solvent oil is (2-4): (96-98); The solid wax comprises fully refined paraffin wax, beeswax and palm wax, wherein the weight ratio of fully refined paraffin wax, beeswax and palm wax is (55-65): (28-32): (7-13); The industrial solvent oil includes No. 120 solvent oil and No. 200 solvent oil; wherein the weight ratio of No. 120 solvent oil to No. 200 solvent oil is (2-4): (6-8).

2. The lubricating oil for enameled wire arrangement according to claim 1, characterized in that: The weight ratio of the solid wax to industrial solvent oil is 3:

97.

3. The lubricating oil for enameled wire arrangement according to claim 1, characterized in that: The weight ratio of the fully refined paraffin wax, beeswax and palm wax is 60:30:

10.

4. The lubricating oil for enameled wire arrangement according to claim 3, characterized in that: The fully refined paraffin wax is 56 degree fully refined paraffin wax.

5. The lubricating oil for enameled wire arrangement according to claim 1, characterized in that: The weight ratio of the No. 120 solvent oil to the No. 200 solvent oil is 3:

7.

6. A method for preparing the lubricating oil for enameled wire arrangement according to any one of claims 1 to 5, characterized in that: The following steps are involved: The solid wax oil bath is heated and dissolved at a temperature of 80°C-90°C to obtain a transparent wax liquid, and then the transparent wax liquid is added to the industrial solvent oil while stirring, and the mixture is stirred for 2h-2.5h to obtain the enameled wire arrangement lubricating oil.

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