CN111635810A - Preparation process and use method of water-based metal cold extrusion lubricant - Google Patents
Preparation process and use method of water-based metal cold extrusion lubricant Download PDFInfo
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- CN111635810A CN111635810A CN202010492977.5A CN202010492977A CN111635810A CN 111635810 A CN111635810 A CN 111635810A CN 202010492977 A CN202010492977 A CN 202010492977A CN 111635810 A CN111635810 A CN 111635810A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
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- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/065—Sulfides; Selenides; Tellurides
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- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/082—Inorganic acids or salts thereof containing nitrogen
- C10M2201/083—Inorganic acids or salts thereof containing nitrogen nitrites
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- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/024—Well-defined aliphatic compounds unsaturated
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/28—Esters
- C10M2207/287—Partial esters
- C10M2207/289—Partial esters containing free hydroxy groups
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/104—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing two carbon atoms only
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/105—Polyethers, i.e. containing di- or higher polyoxyalkylene groups of alkylene oxides containing three carbon atoms only
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/108—Polyethers, i.e. containing di- or higher polyoxyalkylene groups etherified
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- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/103—Polyethers, i.e. containing di- or higher polyoxyalkylene groups
- C10M2209/109—Polyethers, i.e. containing di- or higher polyoxyalkylene groups esterified
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2215/044—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms having cycloaliphatic groups
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- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/08—Amides
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- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
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- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/64—Environmental friendly compositions
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
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- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
- C10N2040/243—Cold working
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- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/015—Dispersions of solid lubricants
- C10N2050/02—Dispersions of solid lubricants dissolved or suspended in a carrier which subsequently evaporates to leave a lubricant coating
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Abstract
The invention discloses a preparation process of an aqueous metal cold extrusion lubricant, which comprises the following steps: step 1: adding 55-75 wt% of water and 1-5 wt% of nonionic surfactant into a reaction kettle, and stirring until the nonionic surfactant is completely dissolved in the water; step 2: adding 5-10% of water-based stearate and 10-20% of tungsten disulfide into the solution obtained in the step 1, heating and continuously stirring, keeping the temperature at 50-70 ℃, stopping heating after the heating time is 1h, and adding 10-15% of water-based interface lubricant, 0.5-1% of dispersing agent, 2-3% of antirust agent and 0.1-0.5% of defoaming agent in percentage by weight after the solution is cooled to obtain the water-based metal cold extrusion lubricant. The water-based metal cold extrusion lubricant is a water-based cold extrusion coating, replaces a novel lubricating coating of a phosphorization-saponification process, plays a role in protecting a die and ensuring the size and the shape in the cold extrusion process, and has no wastewater and waste gas pollution in the whole process.
Description
Technical Field
The invention relates to the technical field of water-based lubricants, in particular to a preparation process and a use method of a water-based metal cold extrusion lubricant.
Background
In the cold extrusion process of metal, the use of lubricant is crucial, in the cold plastic forming process of metal, the resistance of the contact surface which prevents tangential movement, namely the external friction force, is generated when the metal to be processed and the die move relatively, the force and energy required by the processing can be increased due to the existence of the external friction force, so that the metal surface needs to be lubricated, the lubricant is used for reducing the friction resistance of a friction pair and a lubricating medium which slows down the abrasion of the friction pair, a firm and tough lubricating film is formed between a workpiece and the die, the purpose of reducing the friction is achieved, if the lubrication of the surface of the lubricant does not meet the requirement, the abrasion of the die is aggravated, and the phenomena of adhesion, scratch and the like are generated on the surface of the workpiece, therefore, the development of the lubricating technology can promote the cold plastic forming process of.
In the cold plastic forming process of metal, the application of bonderizing-saponification lubrication technique is very common, the theory of operation of bonderizing-saponification technology mainly is that a layer of even firm bonderizing membrane that combines in metal matrix surface is generated on the metal surface through chemical reaction, the bonderizing membrane has a lot of spaces, sodium stearate can be fine absorbed and stored to these pores, the bonderizing membrane reacts with sodium stearate in extrusion process and generates the zinc stearate that the lubricity is good, thereby reduce the frictional force between metal and the mould that warp, the bonderizing membrane has fine plasticity, can flow along with the matrix metal at the extruded in-process, use that can also be many times.
However, the phosphorization-saponification process includes seven steps of alkali washing for oil removal, water washing, acid washing for rust removal, water washing, phosphorization, water washing, saponification and the like, so that the raw material and energy consumption is large, and the total working environment is poor; moreover, the discharge of the phosphorus-containing waste liquid can cause environmental pollution; the residual phosphating coat on the surface of the metal after molding is difficult to remove. The phosphating-saponification lubricating technique has been gradually stopped in recent years. Therefore, it is a hot spot of research to find an environmentally friendly lubricant suitable for cold molding of metals.
At present, the novel water-based lubricant that appears in the market is mostly polymer graphite type lubricant, and this kind of lubricant has certain lubricated effect to metal cold moulding, but the cost is higher, and black dust pollutes seriously in the production environment moreover, is unfavorable for workman's healthy.
We have therefore proposed a process for the preparation of an aqueous metal cold extrusion lubricant and a method of use which facilitate the solution of the problems set out above.
Disclosure of Invention
The invention aims to provide a preparation process and a use method of an aqueous metal cold extrusion lubricant, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the water-based metal cold extrusion lubricant comprises the following components in percentage by weight: 5-10% of water-based stearate, 10-20% of tungsten disulfide, 1-5% of nonionic surfactant, 10-15% of water-based interface lubricant, 0.5-1% of dispersant, 2-3% of antirust agent, 0.1-0.5% of defoaming agent and 55-75% of water, wherein the sum of the contents of the components is 100%.
Preferably, the water-based stearate is one or a combination of two of water-based zinc stearate and water-based lithium stearate, and the nonionic surfactant is one or a combination of two of alkylphenol polyoxyethylene ether and higher fatty alcohol polyoxyethylene ether.
Preferably, the aqueous interface lubricant is prepared from 15% by weight of alcohol ether carboxylic acid, 25% by weight of polyoxy castor oil, 5% by weight of olefin and 55% by weight of chlorinated fatty acid, based on the total weight of the aqueous interface lubricant.
Preferably, the antirust agent is one or a combination of more of sodium nitrite, rosin amine, sorbitan monooleate, polyethylene glycol dioleate, polyethylene glycol distearate and oleoyl sarcosine.
Preferably, the defoaming agent is one or a combination of more of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether.
A preparation process of an aqueous metal cold extrusion lubricant comprises the following steps:
step 1: adding 55-75 wt% of water and 1-5 wt% of nonionic surfactant into a reaction kettle, and stirring until the nonionic surfactant is completely dissolved in the water;
step 2: adding 5-10% of water-based stearate and 10-20% of tungsten disulfide into the solution obtained in the step 1, heating and continuously stirring, keeping the temperature at 50-70 ℃, stopping heating after the heating time is 1h, and adding 10-15% of water-based interface lubricant, 0.5-1% of dispersing agent, 2-3% of antirust agent and 0.1-0.5% of defoaming agent in percentage by weight after the solution is cooled to obtain the water-based metal cold extrusion lubricant.
A method for using an aqueous metal cold extrusion lubricant, comprising the steps of: firstly, descaling a workpiece needing cold extrusion processing, then heating a processed workpiece blank, quickly placing the high-temperature workpiece in the prepared lubricant after the workpiece is heated to a specific temperature, taking out the workpiece after the workpiece is maintained for 30 seconds, and finally drying the workpiece, so that the dried workpiece can be subjected to cold extrusion.
Preferably, the workpiece heating temperature is 80-100 ℃.
Preferably, the workpiece is dried naturally or air-dried.
Compared with the prior art, the invention has the beneficial effects that: the water-based metal cold extrusion lubricant is a water-based cold extrusion coating, replaces a novel lubricating coating of a phosphorization-saponification process, is a green and environment-friendly product, and can be dried after being soaked and dried in cold during use, after the lubricant is coated, a compact lubricating layer is formed on the surface of a prefabricated cold extrusion workpiece, the effect of protecting a mold and ensuring the size and the shape is achieved in the cold extrusion process, the whole process is free of any waste water and waste gas pollution, the coating preparation process is simple, the energy consumption is low, and the water-based metal cold extrusion lubricant is pollution-free and has the advantages that:
(1) the process is shortened, the operation is simple, and the cost of the metal product is reduced;
(2) the method is safe, nontoxic and free of environmental pollution, does not have the problems of discharge and sewage treatment after discharge, and relieves the cost and trouble of sewage treatment;
(3) time and labor are saved, and the labor condition is good;
(4) the cost of the lubricating cost is reduced by 2/1 to 3/1 compared with the cost of the phosphating-saponification process.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: the water-based metal cold extrusion lubricant comprises the following components in percentage by weight: 5-10% of water-based stearate, 10-20% of tungsten disulfide, 1-5% of nonionic surfactant, 10-15% of water-based interface lubricant, 0.5-1% of dispersing agent, 2-3% of antirust agent, 0.1-0.5% of defoaming agent and 55-75% of water, wherein the sum of the contents of the components is 100%, the water-based stearate is one or two of water-based zinc stearate and water-based lithium stearate, the nonionic surfactant is one or two of alkylphenol polyoxyethylene ether and high-carbon fatty alcohol polyoxyethylene ether, the water-based interface lubricant is prepared from alcohol ether carboxylic acid, polyoxy castor oil, olefin and chlorinated fatty acid, and the weight percentage of the components is 15% of alcohol ether carboxylic acid, 25% of polyoxy castor oil and 25% of the total weight percentage of the water-based interface lubricant, 5% of olefin and 55% of chlorinated fatty acid, the antirust agent is one or a combination of more of sodium nitrite, rosin amine, sorbitan monooleate, polyethylene glycol dioleate, polyethylene glycol distearate and oleoyl sarcosine, and the defoaming agent is one or a combination of more of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether.
A preparation process of an aqueous metal cold extrusion lubricant comprises the following steps:
step 1: adding 55-75 wt% of water and 1-5 wt% of nonionic surfactant into a reaction kettle, and stirring until the nonionic surfactant is completely dissolved in the water;
step 2: adding 5-10% of water-based stearate and 10-20% of tungsten disulfide into the solution obtained in the step 1, heating and continuously stirring, keeping the temperature at 50-70 ℃, stopping heating after the heating time is 1h, and adding 10-15% of water-based interface lubricant, 0.5-1% of dispersing agent, 2-3% of antirust agent and 0.1-0.5% of defoaming agent in percentage by weight after the solution is cooled to obtain the water-based metal cold extrusion lubricant.
A method for using an aqueous metal cold extrusion lubricant, comprising the steps of: firstly, descaling a workpiece needing cold extrusion processing, then heating a processed workpiece blank, wherein the heating temperature of the workpiece is 80-100 ℃, when the workpiece is heated to a specific temperature, the high-temperature workpiece can be quickly placed in the prepared lubricant and is taken out after being maintained for 30 seconds, and finally drying is carried out, the drying mode of the workpiece is natural drying or air drying, so that the dried workpiece can be subjected to cold extrusion work.
Example 2
The invention provides another technical scheme: the water-based metal cold extrusion lubricant comprises the following components in percentage by weight: 5% of water-based stearate, 10% of tungsten disulfide, 1% of nonionic surfactant, 10% of water-based interface lubricant, 0.5% of dispersing agent, 2% of antirust agent, 0.1% of defoaming agent and 72% of water, wherein the water-based stearate is one or a combination of two of water-based zinc stearate and water-based lithium stearate, the nonionic surfactant is one or a combination of two of alkylphenol polyoxyethylene ether and high-carbon fatty alcohol polyoxyethylene ether, the water-based interface lubricant is prepared from alcohol ether carboxylic acid, polyoxy castor oil, olefin and chlorinated fatty acid, the weight percentages of the components are 15% of alcohol ether carboxylic acid, 25% of polyoxy castor oil, 5% of olefin and 55% of chlorinated fatty acid, and the antirust agent is sodium nitrite, rosin amine, sorbitan monooleate, polyethylene glycol dioleate, polyethylene glycol distearate, The antifoaming agent is one or a combination of a plurality of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether.
A preparation process of an aqueous metal cold extrusion lubricant comprises the following steps:
step 1: adding 72 percent by weight of water and 1 percent by weight of nonionic surfactant into a reaction kettle, and stirring until the nonionic surfactant is completely dissolved in the water;
step 2: and (2) adding 5% of water-based stearate and 10% of tungsten disulfide into the solution obtained in the step (1), heating and raising the temperature, continuously stirring, keeping the temperature at 50 ℃, stopping heating after the heating time is 1h, and adding 10% of water-based interface lubricant, 0.5% of dispersant, 2% of antirust agent and 0.1% of defoaming agent in percentage by weight after the solution is cooled to obtain the water-based metal cold extrusion lubricant.
A method for using an aqueous metal cold extrusion lubricant, comprising the steps of: firstly, descaling a workpiece needing cold extrusion processing, then heating a processed workpiece blank, wherein the heating temperature of the workpiece is 80 ℃, when the workpiece is heated to a specific temperature, quickly placing the high-temperature workpiece in the prepared lubricant, taking out the workpiece after the workpiece is maintained for 30 seconds, and finally drying the workpiece, wherein the drying mode of the workpiece is natural drying or air drying, so that the dried workpiece can be subjected to cold extrusion work.
Example 3
The invention provides a technical scheme that: the water-based metal cold extrusion lubricant comprises the following components in percentage by weight: 7% of water-based stearate, 15% of tungsten disulfide, 3% of nonionic surfactant, 13% of water-based interface lubricant, 0.7% of dispersing agent, 2.5% of antirust agent, 0.3% of defoaming agent and 65% of water, wherein the water-based stearate is one or a combination of two of water-based zinc stearate and water-based lithium stearate, the nonionic surfactant is one or a combination of two of alkylphenol polyoxyethylene ether and high-carbon fatty alcohol polyoxyethylene ether, the water-based interface lubricant is prepared from alcohol ether carboxylic acid, polyoxy castor oil, olefin and chlorinated fatty acid, the weight percentages of the components are 15% of alcohol ether carboxylic acid, 25% of polyoxy castor oil, 5% of olefin and 55% of chlorinated fatty acid, and the antirust agent is sodium nitrite, rosin amine, sorbitol monooleate, polyethylene glycol dioleate, polyethylene glycol distearate, The antifoaming agent is one or a combination of a plurality of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether.
A preparation process of an aqueous metal cold extrusion lubricant comprises the following steps:
step 1: adding 65 percent by weight of water and 3 percent by weight of nonionic surfactant into a reaction kettle, and stirring until the nonionic surfactant is completely dissolved in the water;
step 2: adding 7% of water-based stearate and 15% of tungsten disulfide into the solution obtained in the step 1, heating and raising the temperature, continuously stirring, keeping the temperature at 60 ℃, stopping heating after the heating time is 1h, and adding 13% of water-based interface lubricant, 0.7% of dispersing agent, 2.5% of antirust agent and 0.3% of defoaming agent by weight percentage after the solution is cooled to obtain the water-based metal cold extrusion lubricant.
A method for using an aqueous metal cold extrusion lubricant, comprising the steps of: firstly, descaling a workpiece needing cold extrusion processing, then heating a processed workpiece blank, wherein the heating temperature of the workpiece is 90 ℃, when the workpiece is heated to a specific temperature, quickly placing the high-temperature workpiece in the prepared lubricant, taking out the workpiece after the workpiece is maintained for 30 seconds, and finally drying the workpiece, wherein the drying mode of the workpiece is natural drying or air drying, so that the dried workpiece can be subjected to cold extrusion work.
Example 4
The invention provides a technical scheme that: the water-based metal cold extrusion lubricant comprises the following components in percentage by weight: 10% of water-based stearate, 20% of tungsten disulfide, 5% of nonionic surfactant, 15% of water-based interface lubricant, 1% of dispersing agent, 3% of antirust agent, 0.5% of defoaming agent and 55% of water, wherein the water-based stearate is one or a combination of two of water-based zinc stearate and water-based lithium stearate, the nonionic surfactant is one or a combination of two of alkylphenol polyoxyethylene ether and high-carbon fatty alcohol polyoxyethylene ether, the water-based interface lubricant is prepared from alcohol ether carboxylic acid, polyoxy castor oil, olefin and chlorinated fatty acid, the weight percentages of the components are 15% of alcohol ether carboxylic acid, 25% of polyoxy castor oil, 5% of olefin and 55% of chlorinated fatty acid, and the antirust agent is sodium nitrite, rosin amine, sorbitan monooleate, polyethylene glycol dioleate, polyethylene glycol distearate, The antifoaming agent is one or a combination of a plurality of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether.
A preparation process of an aqueous metal cold extrusion lubricant comprises the following steps:
step 1: adding 55 percent by weight of water and 5 percent by weight of nonionic surfactant into a reaction kettle, and stirring until the nonionic surfactant is completely dissolved in the water;
step 2: adding 10% of water-based stearate and 20% of tungsten disulfide into the solution obtained in the step 1, heating and raising the temperature, continuously stirring, keeping the temperature at 70 ℃, stopping heating after the heating time is 1h, and adding 15% of water-based interface lubricant, 1% of dispersant, 3% of antirust agent and 0.5% of defoaming agent by weight percentage after the solution is cooled to obtain the water-based metal cold extrusion lubricant.
A method for using an aqueous metal cold extrusion lubricant, comprising the steps of: firstly, descaling a workpiece needing cold extrusion processing, then heating a processed workpiece blank, wherein the heating temperature of the workpiece is 100 ℃, when the workpiece is heated to a specific temperature, quickly placing the high-temperature workpiece in the prepared lubricant, taking out the workpiece after the workpiece is maintained for 30 seconds, and finally drying the workpiece, wherein the drying mode of the workpiece is natural drying or air drying, so that the dried workpiece can be subjected to cold extrusion work.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The water-based metal cold extrusion lubricant is characterized by comprising the following components in percentage by weight: 5-10% of water-based stearate, 10-20% of tungsten disulfide, 1-5% of nonionic surfactant, 10-15% of water-based interface lubricant, 0.5-1% of dispersant, 2-3% of antirust agent, 0.1-0.5% of defoaming agent and 55-75% of water, wherein the sum of the contents of the components is 100%.
2. The aqueous metal cold extrusion lubricant of claim 1, wherein: the water-based stearate is one or the combination of two of water-based zinc stearate and water-based lithium stearate, and the nonionic surfactant is one or the combination of two of alkylphenol polyoxyethylene ether and high-carbon fatty alcohol polyoxyethylene ether.
3. The aqueous metal cold extrusion lubricant of claim 1, wherein: the aqueous interface lubricant is prepared from 15% of alcohol ether carboxylic acid, 25% of polyoxy castor oil, 5% of olefin and 55% of chlorinated fatty acid by weight percentage based on the total weight percentage of the aqueous interface lubricant.
4. The aqueous metal cold extrusion lubricant of claim 1, wherein: the antirust agent is one or a combination of more of sodium nitrite, rosin amine, sorbitan monooleate, polyethylene glycol dioleate, polyethylene glycol distearate and oleoyl sarcosine.
5. The aqueous metal cold extrusion lubricant of claim 1, wherein: the defoaming agent is one or a combination of more of polyoxyethylene polyoxypropylene pentaerythritol ether, polyoxyethylene polyoxypropylene amine ether, polyoxypropylene glycerol ether and polyoxypropylene polyoxyethylene glycerol ether.
6. A process for preparing the aqueous metal cold extrusion lubricant of claim 1, comprising the steps of:
step 1: adding 55-75 wt% of water and 1-5 wt% of nonionic surfactant into a reaction kettle, and stirring until the nonionic surfactant is completely dissolved in the water;
step 2: adding 5-10% of water-based stearate and 10-20% of tungsten disulfide into the solution obtained in the step 1, heating and continuously stirring, keeping the temperature at 50-70 ℃, stopping heating after the heating time is 1h, and adding 10-15% of water-based interface lubricant, 0.5-1% of dispersing agent, 2-3% of antirust agent and 0.1-0.5% of defoaming agent in percentage by weight after the solution is cooled to obtain the water-based metal cold extrusion lubricant.
7. The method of using the aqueous metal cold extrusion lubricant of any one of claims 1-5, comprising the steps of: firstly, descaling a workpiece needing cold extrusion processing, then heating a processed workpiece blank, quickly placing the high-temperature workpiece in the prepared lubricant after the workpiece is heated to a specific temperature, taking out the workpiece after the workpiece is maintained for 30 seconds, and finally drying the workpiece, so that the dried workpiece can be subjected to cold extrusion.
8. The method of using an aqueous metal cold extrusion lubricant as claimed in claim 7, wherein: the heating temperature of the workpiece is 80-100 ℃.
9. The method of using an aqueous metal cold extrusion lubricant as claimed in claim 7, wherein: the workpiece is dried naturally or air-dried.
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