CN107267271B

CN107267271B - Lubricant for hot rolling process of aluminum alloy plate strip

Info

Publication number: CN107267271B
Application number: CN201710612034.XA
Authority: CN
Inventors: 陈士锋; 张名超
Original assignee: Shandong Maituo Kell New Mstar Technology Ltd
Current assignee: Shandong Maituo Kell New Mstar Technology Ltd
Priority date: 2017-07-25
Filing date: 2017-07-25
Publication date: 2020-03-13
Anticipated expiration: 2037-07-25
Also published as: CN107267271A

Abstract

The invention provides a lubricant for an aluminum alloy plate and strip hot rolling process, which comprises the following components: base oil, organic fatty acid, organic amine, lubricating ester, an oil film reinforcing agent, an emulsifier, an antirust agent, an antioxidant and a defoaming agent; the oil film enhancers include phosphate esters, diesters, and polyolefin-synthetic ester copolymers. The oil film reinforcing agent which is a key component in the lubricant plays a synergistic role by compounding the phosphate, the diester and the polyolefin-synthetic ester copolymer, can form a composite oil film in the rolling process of the aluminum alloy plate strip, improves the strength of the oil film, and eliminates the surface quality defect of the aluminum alloy plate strip.

Description

Lubricant for hot rolling process of aluminum alloy plate strip

Technical Field

The invention relates to the technical field of metal pressure processing, in particular to a lubricant for an aluminum alloy plate and strip hot rolling process.

Background

Aluminum alloy products play an increasingly important role in the national economy; with the development of economy, users have higher and higher quality requirements on aluminum alloy plates and strips, such as high-end aluminum alloy products of automobile plates, tank materials, aviation plates, printing plate bases and the like, so that plate and strip processing enterprises are required to provide products with uniform thickness, good plate shape, uniform surface finish of aluminum alloy and excellent deep processing performance so as to meet the continuously improved requirements of downstream aluminum alloy deep processing procedures.

The hot rolling process of the aluminum alloy plate strip is carried out above the recrystallization temperature of the aluminum alloy. In general, the temperature of the aluminum plate strip is between 450 and 560 ℃ in the rough rolling process, and the temperature of the aluminum plate strip is between 280 and 450 ℃ in the finish rolling or continuous rolling process. Under the harsh processing conditions, particularly, the aluminum alloy has the characteristics of low melting point, soft texture, good ductility, easy adhesion and the like, and the problems of aluminum adhesion, more surface residues and the like are easily generated on the surfaces of the plate and strip materials, so that the quality defects of products are caused. In the aluminum alloy hot rolling process, special lubricants (or called rolling oil, rolling liquid, emulsified oil and the like) are needed to provide the functions of lubrication, cooling, cleaning, rust prevention and the like for the rolling process. The lubricant is generally used by being prepared into emulsion with the concentration of 3-5% (rough rolling process) and 6-8% (continuous rolling process) with water.

At present, the common hot rolling process lubricant in the market is generally composed of mineral oil, emulsifier, simple synthetic ester, simple poly fatty acid ester, natural animal and vegetable oil and the like, and is prepared into oil-in-water type emulsion with a certain concentration for use. In the rolling process, the emulsion can be subjected to partial oil-water separation, the oil is separated out and adsorbed on the surface of metal to form an oil film for lubrication, and the water is separated out for cooling and cleaning. Because the surface temperature of the aluminum alloy is very high and the texture of the aluminum alloy is soft, the oil film formed by the lubricant in the traditional process is easy to desorb and break under the action of high temperature and high pressure, so that the metal surface is in direct contact and friction, and the metal is welded and torn in micro-areas, so that the quality defects of aluminum adhesion, color difference and the like on the surface are caused. In addition, some lubricants in the market increase the oil film strength by adding simple polymerized unsaturated fatty acid ester or polymerized unsaturated fatty acid, although the lubricating effect can be improved to a certain extent, the polymerized unsaturated fatty acid ester has too many polar groups and too strong polarity, the hydrolytic stability and the thermal oxidation stability of the polymerized unsaturated fatty acid ester are poor due to too many unsaturated bonds in molecules, the polar groups are easy to react with metal scraps and metal ions in emulsion to form more viscous macromolecular metal soap, and the metal soap and metal scraps adhered to the metal soap are adsorbed on the surface of a metal workpiece, so that excessive metal surface residues are caused, and even serious quality defects of aluminum adhesion and emulsion spots are caused; under certain conditions, the phenomenon of slipping can be caused, and the vibration mark defect which is difficult to eliminate in the subsequent process can occur. Therefore, a lubricating component capable of firmly adsorbing and enhancing oil film performance on the metal surface under severe high-temperature and high-pressure rolling process conditions needs to be found, and an aluminum alloy hot rolling process lubricant with more excellent performance is developed, so that the defects of aluminum adhesion, excessive residue and the like on the surface of an aluminum alloy plate strip after rolling are overcome, and the surface quality of the aluminum alloy plate strip is improved.

Disclosure of Invention

The invention aims to provide a lubricant for an aluminum alloy plate and strip hot rolling process, and the lubricant provided by the invention has higher oil film strength, so that the defects of aluminum adhesion and the like on the surface of an aluminum plate after rolling can be improved.

In view of the above, the present application provides a lubricant for a hot rolling process of an aluminum alloy plate strip, comprising: base oil, organic fatty acid, organic amine, lubricating ester, an oil film reinforcing agent, an emulsifier, an antirust agent, an antioxidant and a defoaming agent; the oil film enhancers include phosphate esters, diesters, and polyolefin-synthetic ester copolymers.

Preferably, the content of the base oil is 15wt% -60 wt%, the content of the organic fatty acid is 4wt% -25 wt%, the content of the organic amine is 2wt% -10 wt%, the content of the lubricating ester is 10wt% -40 wt%, the content of the oil film reinforcing agent is 9wt% -25 wt%, the content of the emulsifying agent is 2wt% -8 wt%, the content of the antirust agent is 1wt% -3 wt%, the content of the defoaming agent is 0.01wt% -0.3 wt%, and the content of the antioxidant is 0.5wt% -1.0 wt%.

Preferably, based on the lubricant, the content of the phosphate ester in the oil film enhancer is 2wt% -6 wt%, the content of the diester is 3wt% -8 wt%, and the content of the polyolefin-synthetic ester copolymer is 4wt% -11 wt%.

Preferably, the base oil is selected from one or more of 60N, 70N, 100N, 150N, 500N, 600N, transformer oil, 46# refrigerator oil and rubber extender oil.

Preferably, the organic fatty acid is selected from one or more of a ten-carbon fatty acid, a twelve-carbon fatty acid, a fourteen-carbon fatty acid, a sixteen-carbon fatty acid and an eighteen-carbon fatty acid.

Preferably, the organic amine is selected from one or more of aliphatic amine, alcohol amine and alicyclic amine.

Preferably, the lubricating ester is selected from one or more of synthetic esters selected from one or more of trimethylolpropane oleate, neopentyl glycol oleate, trimethylolpropane caprylate and trimethylolpropane palmitoleate and natural fats selected from one or more of refined lard, refined palm oil, refined coconut oil and refined soybean oil.

Preferably, the emulsifier is fatty alcohol-polyoxyethylene ether and petroleum sodium sulfonate.

Preferably, the antirust agent is a mixture of dodecenylsuccinic acid, triazole and derivatives thereof; the antioxidant is a phenol antioxidant; the defoaming agent is a mineral oil-based polymer type defoaming agent.

Preferably, the phosphate ester in the oil film enhancer is a phosphate amine salt mixture or an acidic phosphate ester with a polyoxyethylene group; the diester is an ester formed by dibasic acid of C6-C10.

The application provides a lubricant for an aluminum alloy plate and strip hot rolling process, which comprises base oil, organic fatty acid, organic amine, lubricating ester, an oil film reinforcing agent, an emulsifier, an antirust agent, an antioxidant and a defoaming agent, wherein the oil film reinforcing agent comprises phosphate, diester and polyolefin-synthetic ester copolymer; in the extreme pressure lubrication state, metal surfaces are in close contact with each other, the oil film is thinnest, and phosphate ester and the metal surfaces can form a liquid reactant film with a lower melting point and high strength under the conditions of high temperature and high pressure, so that the friction and the abrasion are effectively reduced; therefore, the lubricant provided by the application can form a composite oil film in the rolling process of the aluminum alloy plate strip due to the synergistic effect of the phosphate ester, the diester and the polyolefin-synthetic ester copolymer in the oil film reinforcing agent, forms a three-layer oil film with matched height on the metal surface, simultaneously meets the requirements of fluid lubrication, boundary lubrication and extreme pressure lubrication, and effectively improves the strength of the oil film.

Further, in the polyolefin-synthetic ester copolymer of the oil film enhancer of the present application, the polar ester group is adsorbed on the metal surface, while the long-chain hydrocarbon group having no polarity extends into the liquid, thereby increasing both the strength of the formed oil film and the thickness of the oil film.

Drawings

FIG. 1 is a schematic representation of the molecular structure of a polyolefin-synthetic ester copolymer;

fig. 2 is a schematic view of a composite oil film of a lubricant in a mixed state at the time of application.

Detailed Description

For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.

In view of the characteristics of low melting point, soft texture, good ductility, easy adhesion and the like of the aluminum alloy, the surface of the aluminum alloy strip is easy to generate aluminum adhesion, more surface residues and the like in the hot rolling process, the conventional lubricant applied to the hot rolling of the aluminum alloy strip in the prior art is not good in effect, and the aluminum surface is easy to generate aluminum adhesion, more residues, emulsion spots and the like. Specifically, the lubricant for the hot rolling process of the aluminum alloy plate strip provided by the embodiment of the invention comprises the following components:

base oil, organic fatty acid, organic amine, lubricating ester, an oil film reinforcing agent, an emulsifier, an antirust agent, an antioxidant and a defoaming agent; the oil film enhancers include phosphate esters, diesters, and polyolefin-synthetic ester copolymers.

The lubricant provided by the application utilizes the compounding effect of the phosphate, diester and polyolefin-synthetic ester copolymer in the oil film reinforcing agent to enable the lubricant to form a composite oil film on the surface of a workpiece, and the oil film strength in the hot rolling process of the aluminum alloy plate strip is improved.

Specifically, the lubricant in the present application includes a base oil, which is well known to those skilled in the art, and the present application is not particularly limited thereto. Illustratively, the base oil is selected from one or more of 60N, 70N, 100N, 150N, 500N, 600N, transformer oil, 46# refrigerator oil, and rubber extender oil; in particular embodiments, the base oil is selected from one or more of 70N, 150N, transformer oil, and rubber extender oil. The content of the base oil is 15wt% to 60wt%, in a specific embodiment, the content of the base oil is 20 wt% to 50 wt%, and in a specific embodiment, the content of the base oil is 25wt% to 45 wt%.

The organic fatty acid has the functions of lubrication, wetting, coupling, solubilization, contribution to forming an oil film and the like. The organic fatty acid is selected from one or more of a ten-carbon fatty acid, a twelve-carbon fatty acid, a fourteen-carbon fatty acid, a sixteen-carbon fatty acid and an eighteen-carbon fatty acid; in particular embodiments, the organic fatty acid is selected from a mixture of twelve carbon fatty acids and sixteen carbon fatty acids or a mixture of sixteen carbon fatty acids and eighteen carbon fatty acids. The content of the organic fatty acid is 4wt% to 25wt%, in a specific embodiment, the content of the organic fatty acid is 6wt% to 20 wt%, and in a specific embodiment, the content of the organic fatty acid is 8wt% to 15 wt%.

The organic amine provides alkaline conditions for an emulsion liquid system, and contributes to emulsification, cleaning and other effects. The organic amine is selected from one or more of aliphatic amine, alcohol amine and alicyclic amine; more specifically, the aliphatic amine is selected from one or more of monoethylamine, diethylamine, triethylamine, dodecylamine, hexadecylamine and isopropylamine, the alcohol amine is selected from monoethanolamine, diethanolamine, triethanolamine and isopropanolamine, and the alicyclic amine is selected from one or two of cyclohexylamine and dicyclohexylamine; in particular embodiments, the organic amine is selected from triethanolamine, dicyclohexylamine, and isopropanolamine. The content of the organic amine is 2wt% to 10wt%, and in a specific embodiment, the content of the organic amine is 5wt% to 9 wt%.

The lubricant also comprises lubricating ester, and the lubricating ester can be adsorbed on the metal surface to form an oil film and provide lubricating performance. The lubricating ester is selected from one or more of synthetic esters and natural fats; specifically, the synthetic esters are selected from one or more of trimethylolpropane oleate, neopentyl glycol oleate, trimethylolpropane caprylic decanoate and trimethylolpropane palmitoleate, and the natural fats are selected from one or more of refined lard, refined palm oil, refined coconut oil and refined soybean oil; in particular embodiments, the lubricating ester is selected from the group consisting of refined coconut oil, trimethylolpropane oleate, and neopentyl glycol oleate. The content of the lubricating ester is 10wt% to 40wt%, in a specific embodiment, the content of the lubricating ester is 15wt% to 38 wt%, and in a specific embodiment, the content of the lubricating ester is 20 wt% to 30 wt%.

The emulsifiers are well known to those skilled in the art and are herein selected from the group consisting of mixtures of fatty alcohol polyoxyethylene ethers and sodium petroleum sulfonates. The content of the emulsifier is 2wt% -8 wt%, in a specific embodiment, the content of the emulsifier is 3wt% -5 wt%. The rust inhibitor is well known to those skilled in the art, and the rust inhibitor is dodecenyl succinic acid, triazole and derivatives thereof. The content of the antirust agent is 1wt% -3 wt%. The antioxidant is selected from phenolic antioxidants, and the defoaming agent is selected from mineral oil-based polymer defoaming agents; the content of the antioxidant is 0.5-1.0 wt%, and the content of the defoaming agent is 0.01-0.3 wt%.

The lubricant is characterized by an oil film enhancer comprising a phosphate ester selected from a phosphate amine salt mixture or an acidic phosphate ester having a polyoxyethylene (polyoxypropylene) group, a diester based on the lubricant, and a polyolefin-synthetic ester copolymer, wherein the phosphate ester is present in an amount of 2 to 6wt%, and in particular embodiments in an amount of 3.5 to 5wt%, wherein the diester is preferably selected from esters formed from dibasic acids of C6 to C10, wherein the diester is present in an amount of 3 to 8wt%, and in particular embodiments in an amount of 4 to 7 wt%, wherein the polyolefin-synthetic ester copolymer is a copolymer of a polyolefin and a synthetic ester monomer, which combines the advantages of synthetic esters and polyolefins, such as lubricating ability of long chain molecules, strong adsorption ability of ester groups on metal surfaces, high hydrolytic stability, low volatility, no residue on combustion, and avoiding oxidation and hydrolysis resistance of the synthetic esters, wherein the polyolefin has no polar adsorption ability resulting from the polyolefin surface, high hydrolytic stability, and wherein the polyolefin has no adsorption ability of the polyolefin, a synthetic ester group resulting from the polyolefin, a synthetic ester copolymer of a polyolefin, wherein the copolymer of a polyolefin is a copolymer of a polyolefin, wherein the copolymer of a polyolefin-synthetic ester is a polyolefin, wherein the copolymer of a polyolefin is a polyolefin, wherein the copolymer of a polyolefin-synthetic ester is a polyolefin, wherein the copolymer of a polyolefin, wherein the polyolefin-synthetic ester is present synthetic ester is a polyolefin, wherein the copolymer of a polyolefin, wherein the polyolefin is a polyolefin, wherein the polyolefin-synthetic ester is present synthetic ester is preferably a polyolefin is present copolymer is a polyolefin, wherein the polyolefin is a polyolefin has a polyolefin, wherein the polyolefin is a polyolefin has a polyolefin, wherein the polyolefin.

In the traditional process lubrication theory, the lubrication state is divided into three types: fluid lubrication, boundary lubrication and extreme pressure lubrication; in a fluid lubrication state, the oil film is thick, and the metal surfaces can be isolated, so that friction and abrasion caused by mutual contact of the metal surfaces are avoided; in the boundary lubrication state, metal surfaces are in close contact with each other due to microscopic unevenness (height difference is in the order of micrometers, thereby creating a so-called roughness concept), and an oil film is thin; in the extreme pressure lubrication state, the metal surfaces are in close contact with each other, and the oil film is thinnest. In the actual lubrication process, the three lubrication states exist simultaneously, namely the three lubrication states are mixed lubrication states, and as to which lubrication state is the main effect, the lubrication states are directly related to the current application conditions.

The lubricant described herein may be prepared according to methods well known to those skilled in the art, and is not particularly limited in this application. The preparation method of the lubricant is as follows:

heating the base oil according to the proportion of each component, sequentially adding the organic fatty acid, the lubricating ester, the organic amine, the emulsifier, the oil film reinforcing agent and the antirust agent under the stirring state, stirring, finally adding the antioxidant and the defoamer, and stirring to obtain the lubricant.

The application of diester and polyolefin-synthetic ester copolymer in the oil film reinforcing agent of the lubricant provided by the invention can provide powerful support for fluid lubrication and boundary lubrication; the phosphate components can form a liquid reactant film with lower melting point and high strength with the metal surface under the conditions of high temperature and high pressure, thereby effectively reducing the generation of friction and abrasion. The oil film enhancer in the lubricating ester can form a composite oil film, namely, phosphate, diester and polyolefin-synthetic ester copolymer are compounded for use, so that a synergistic effect is achieved, a three-layer oil film with matched heights is formed on the surface of metal, as shown in figure 2, and the requirements of fluid lubrication, boundary lubrication and extreme pressure lubrication are met. In the hot rolling process, the lubrication state of the rough rolling process is mainly based on extreme pressure lubrication and boundary lubrication, and the lubrication state of the continuous rolling process is mainly based on boundary lubrication and fluid lubrication. Aiming at different rolling processes, the contents of the phosphate ester, the diester and the polyolefin-synthetic ester copolymer can be flexibly adjusted in the lubricant so as to adapt to different rolling processes and meet different lubricating requirements.

Aiming at the defects of the traditional lubricant, the invention selects the lubricating component with moderate polarity, excellent hydrolytic stability, oxidation resistance stability and excellent lubricating performance as the oil film reinforcing agent under the conditions of high temperature and high pressure in an emulsified liquid system and a large amount of metal chips and metal ions, so as to improve the oil film performance in a deformation area between the surface of the high-temperature aluminum alloy and a roller, eliminate the problems of aluminum adhesion, excessive residue, emulsion spots and the like on the surface of the aluminum plate, improve the hydrolytic stability and oxidation resistance stability of effective components in the emulsified liquid, prolong the service life of the emulsified liquid, reduce the discharge of waste liquid, reduce the consumption and protect the environment.

For further understanding of the present invention, the following examples are given to illustrate the lubricant for hot rolling of aluminum alloy plate and strip, and the scope of the present invention is not limited by the following examples.

Examples

Adding the base oil into a blending tank according to the proportion, heating to 40-50 ℃, and uniformly stirring; and under the stirring state, sequentially adding the organic fatty acid, the lubricating ester, the organic amine, the emulsifier, the oil film reinforcing agent and the antirust agent according to the proportion, stirring for 1-2 h until the mixture is transparent, finally adding the antioxidant and the defoaming agent, and stirring for 2h to obtain the lubricant. Two groups of lubricants are provided for the rough rolling process and the continuous rolling process respectively, and the content of each component of the lubricant is specifically shown in tables 1 and 2.

TABLE 1 data table of various components of lubricant applied to rough rolling process of aluminum alloy sheet strip

TABLE 2 data table of each component of lubricant applied to continuous rolling process of aluminum alloy sheet and strip

Components	Example 4	Example 5	Example 6
				Base oil	29.9	17.4	26.7
Sixteen carbon fatty acid	4	6	2
				Octadecane fatty acids	4	3	8
Triethanolamine	5	7	8
				Dicyclohexylamine	1	1	0
Isopropanolamine	1	0	2
				Refined palm oil	18	15	10
Trimethylolpropane oleate	15	20	9
				Neopentyl glycol oleate	0	5	5
Fatty alcohol polyoxyethylene ether	5	4	2
				Petroleum sulfonic acid sodium salt	2	1	1
Amine salt mixtures of phosphoric acid esters	2	3.5	6
				Suberic acid diethyl ester	3	5	7
Polyolefin-synthetic ester copolymers	6	8	10
				Dodecenylsuccinic acid	2	2	0.5
Triazole and derivative thereof	0.8	1	1.5
				Phenolic antioxidants	1	0.8	1
Mineral-based polymeric defoamer	0.3	0.3	0.3

Note: the polyolefin-synthetic ester copolymer in Table 1 is specifically a copolymer of 1-octene/1-dodecene copolymer and methyl 2, 4-dodecanedioate;

the polyolefin-synthetic ester copolymer in Table 2 is specifically a copolymer of ethylene octene copolymer and ethyl 1, 3-decadienoate.

Selecting two typical lubricants 1# and 2# sold in the market for the traditional hot rolling process, respectively adopting two lubricants 3# (example 1) and 4# (example 4) prepared by the embodiment of the invention to carry out oil film strength comparison detection, adopting GB/T3142-82 (2004) (lubricant bearing capacity determination method) to detect the maximum non-seizure load (namely oil film strength), wherein an experimental instrument is an MS-10 four-ball friction tester of Xiamen Tianji automatic Limited company, a sample is raw liquid, the oil temperature is 80 ℃, the detection conditions are carried out according to GB/T3142-82 (2004), and the detection results are shown in Table 3,

TABLE 3 Performance data Table for conventional lubricants and inventive lubricants

Group of	1#	2#	3#	4#
					Maximum no-seizing load (kg)	58	61	70	72

As can be seen from Table 3, the process lubricant of the present invention employs a "composite oil film" technique, and has a stronger oil film strength than the conventional process lubricant; the process lubricant adopting the technology can effectively help to establish a super-strong lubricating oil film on the surface of metal, and can obviously improve the quality defects of aluminum adhesion and the like on the surface of an aluminum plate after rolling processing.

The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lubricant for use in a hot rolling process of an aluminum alloy sheet strip comprising: base oil, organic fatty acid, organic amine, lubricating ester, an oil film reinforcing agent, an emulsifier, an antirust agent, an antioxidant and a defoaming agent; the oil film enhancers include phosphate esters, diesters, and polyolefin-synthetic ester copolymers;

based on the lubricant, the content of phosphate ester in the oil film reinforcing agent is 2-6 wt%, the content of diester is 3-8 wt%, and the content of polyolefin-synthetic ester copolymer is 4-11 wt%;

the phosphate ester in the oil film reinforcing agent is a phosphate ester amine salt mixture or an acidic phosphate ester with a polyoxyethylene group; the diester is an ester formed by dibasic acid of C6-C10;

the lubricating ester is selected from one or more of synthetic esters and natural fats, the synthetic esters are selected from one or more of trimethylolpropane oleate, neopentyl glycol oleate, trimethylolpropane caprylic decanoate and trimethylolpropane palmitoleate, and the natural fats are selected from one or more of refined lard, refined palm oil, refined coconut oil and refined soybean oil;

the polyolefin-synthetic ester copolymer is a copolymer of C8-C18 olefin copolymer and C6-C12 diacrylate.

2. The lubricant of claim 1, wherein the base oil is 15wt% to 60wt%, the organic fatty acid is 4wt% to 25wt%, the organic amine is 2wt% to 10wt%, the lubricating ester is 10wt% to 40wt%, the oil film enhancer is 9wt% to 25wt%, the emulsifier is 2wt% to 8wt%, the rust inhibitor is 1wt% to 3wt%, the defoamer is 0.01wt% to 0.3wt%, and the antioxidant is 0.5wt% to 1.0 wt%.

3. The lubricant of claim 1 or 2, wherein the base oil is selected from one or more of 60N, 70N, 100N, 150N, 500N, 600N, transformer oil, 46# refrigerator oil, and rubber extender oil.

4. The lubricant of claim 1 or 2, wherein the organic fatty acids are selected from one or more of ten carbon fatty acids, twelve carbon fatty acids, fourteen carbon fatty acids, sixteen carbon fatty acids, and eighteen carbon fatty acids.

5. The lubricant according to claim 1 or 2, characterized in that the organic amine is selected from one or more of aliphatic, alcohol and alicyclic amines.

6. The lubricant according to claim 1 or 2, wherein the emulsifier is fatty alcohol-polyoxyethylene ether and sodium petroleum sulfonate.

7. The lubricant of claim 1 or 2, wherein the rust inhibitor is a mixture of dodecenylsuccinic acid, triazole, and derivatives thereof; the antioxidant is a phenol antioxidant; the defoaming agent is a mineral oil-based polymer type defoaming agent.