CN112899061A - Special water-based grinding fluid for hard alloy and preparation method thereof - Google Patents
Special water-based grinding fluid for hard alloy and preparation method thereof Download PDFInfo
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- 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
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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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
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
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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
- 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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- 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
- 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
- C10M2207/127—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 polycarboxylic
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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
- 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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- 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
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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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/044—Polyamides
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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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/061—Esters derived from boron
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Abstract
The invention relates to a special water-based grinding fluid for hard alloy, which comprises the following components: 13.0 to 18.0 percent; fatty alcohol-polyoxyethylene ether or alkylphenol polyoxyethylene ether: 5.0-8.0%; triethanolamine borate ester: 6.0-10.0%; and (2) lauric acid: 6.0-9.0%; sodium oleate soap: 4.0-6.0%; benzotriazole or tolyltriazole: 0.25-0.5%; sodium hydroxide: 3.0-5.0%; and (3) organic silicon defoaming agent: 1.0-2.0%; anionic polyacrylamide: 0.1-0.5%; the balance being water. The invention also relates to a preparation method of the grinding fluid. The grinding fluid is green environment-friendly water-based grinding fluid, has excellent lubricity, cooling property, antirust property and cleaning property, can effectively inhibit the leaching of cobalt in hard alloy, and has long service life.
Description
Technical Field
The invention belongs to the field of hard alloy grinding, in particular relates to a special aqueous grinding fluid for hard alloy grinding, and also relates to a preparation method of the special aqueous grinding fluid for hard alloy grinding,
background
WC-Co cemented carbide is widely used in the fields of cutting tools, mining tools, impact molds, and wear resistant parts because of its excellent hardness and wear resistance, good fracture strength, and toughness. In the process of grinding hard alloy materials, in order to reduce grinding temperature, improve grinding efficiency and prolong the service life of a grinding wheel, oil-based and water-based grinding fluid is widely used in the production process. The oily grinding fluid has good lubricity and rust resistance, but has poor cooling effect, contains components such as nitrite, sodium carbonate, mineral oil and the like, is harmful to human health and seriously pollutes the environment, has relatively low grinding efficiency, is not easy to clean, and brings inconvenience to the subsequent process. The water-based grinding fluid has good cooling performance, but the quality of the water-based grinding fluid on the prior market is uneven, the water-based grinding fluid has leaching effect on cobalt in the hard alloy in the grinding process, rusty spots are formed on the surface of the ground alloy, and the rusty spots contain toxic and harmful components such as sodium nitrite, potassium dichromate and the like. Therefore, in view of the above-mentioned current situation, some new aqueous grinding liquids have been proposed.
Chinese patent No. CN1030300073B, namely Total synthetic grinding fluid special for processing hard alloy and a preparation method thereof, discloses total synthetic grinding fluid special for processing hard alloy and a preparation method thereof, wherein the total synthetic grinding fluid comprises the following components in percentage by weight: 10-15% of extreme pressure lubricant, 15-25% of surfactant, 5-15% of PH stabilizer, 3-5% of coupling agent, 5-8% of antirust agent, 3-5% of efficient special component and 27-59% of water; the process comprises the following steps: mixing and stirring a high-efficiency special component (a mixture of isopropylidene glycerol and 2, 2-dimethyl-1, 3-dioxolane-4-methyl acetate), an extreme pressure lubricant (an organic acid (stearic acid, palmitic acid, oleic acid, linoleic acid and ricinoleic acid) and an organic amine (monoisopropanolamine, diisopropanolamine and triisopropanolamine)/organic alcohol (polyethylene glycol, polyglycerol and polyether tetraol) at normal temperature and normal pressure until a solution is clarified) and water for 10 min-1 h at 30-80 ℃ to obtain a mixture component A; mixing and stirring a pH stabilizer (monoisopropanolamine, diisopropanolamine, triisopropanolamine), a rust inhibitor (DDDA) and water at the temperature of 30-80 ℃ for 10 min-1 h to obtain a mixture component B; mixing and stirring a surfactant (fatty alcohol-polyoxyethylene ether, tall oil amide, Span60, fatty alcohol-polyoxyethylene polyoxypropylene ether) and a coupling agent (polyether, diethylene glycol, glycerol, propylene glycol and ethylene glycol) uniformly at normal temperature and normal pressure to obtain a mixture component C; and adding the mixture components of the three groups A, B and C into a reaction kettle, mixing and stirring for 10 min-1 h at the temperature of 30-80 ℃ to obtain the product.
Chinese patent CN107629861A, a hard alloy grinding fluid, discloses a hard alloy grinding fluid, which comprises the following components: 6-18% of special amine (diglycolamine), 2-5% of inorganic base, 2-7% of boric acid, 2-5% of sebacic acid, 2-4% of dodecanedioic acid, 15-25% of polyether (polyether L61), 0.2-1.0% of CU250 nonferrous metal inhibitor (methylbenzotriazole), 5-15% of glycerol, 0.3-2.0% of settling agent (Staradd MF403) and the balance of water.
Chinese patent CN107325877A, a water-soluble fully synthetic hard alloy cutting and grinding fluid, discloses a hard alloy cutting and grinding fluid, which comprises the following components in percentage by weight: 8-10% of water-based lubricant (ethylene oxide and propylene oxide), 8-10% of water-based antirust agent (poly-tribasic carboxylic acid ester), 7-9% of water-based extreme pressure agent (chlorinated paraffin emulsion), 3-5% of cleaning agent (diglycolamine), 5-10% of coupling agent (triethanolamine), 0.5-1.0% of settling agent (Busan 77), 0.1-0.2% of defoaming agent (Foam Ban MS-575), 0.1-0.2% of bactericide (BK and MBM) and the balance of deionized water.
The three grinding fluid patents disclosed above have leaching effect on cobalt in the cemented carbide during grinding. The cobalt is used as a binder of the hard alloy, the leaching of the cobalt can greatly reduce the mechanical impact resistance and the service life of hard alloy parts, and in addition, the leaching of the cobalt can cause the shedding of tungsten carbide particles on the surface of the cobalt, and further form macroscopic defects such as pits and the like in the processing process, thereby generating a large amount of waste products or reworked products. Meanwhile, if the cobalt content in the grinding waste liquid is too high, the environment is easily polluted, and the harm is caused to the health of operators. Therefore, the development of the green environment-friendly water-based grinding fluid which has excellent lubricating, cooling, antirust and cleaning performances and can effectively inhibit the leaching of cobalt in the hard alloy is of great significance.
Disclosure of Invention
The invention aims to provide the green environment-friendly water-based grinding fluid special for grinding the hard alloy, which has excellent lubricating property, cooling property, antirust property and cleaning property, can effectively inhibit the leaching of cobalt in the hard alloy and has long service life, aiming at the defects of the prior art. The invention also provides a preparation method of the special water-based grinding fluid for hard alloy grinding.
In order to achieve the purpose, the special aqueous grinding fluid for hard alloy grinding adopted by the invention comprises the following components in percentage by weight:
polyethylene glycol-400 or polyethylene glycol-600: 13.0 to 18.0 percent
Fatty alcohol-polyoxyethylene ether or alkylphenol polyoxyethylene ether: 5.0 to 8.0 percent
Triethanolamine borate ester: 6.0 to 10.0 percent
And (2) lauric acid: 6.0 to 9.0 percent
Sodium oleate soap: 4.0 to 6.0 percent
Benzotriazole or tolyltriazole: 0.25 to 0.5 percent
Sodium hydroxide: 3.0 to 5.0 percent
And (3) organic silicon defoaming agent: 1.0 to 2.0%
Anionic polyacrylamide: 0.1 to 0.5 percent
The balance being water.
The invention provides a preparation method of special aqueous grinding fluid for hard alloy grinding, which comprises the following steps:
(1) adding polyethylene glycol-400 or polyethylene glycol-600, fatty alcohol-polyoxyethylene ether or alkylphenol ethoxylates, triethanolamine borate, lauric acid, sodium oleate soap, benzotriazole or methyl benzotriazole, an organic silicon defoamer and water into a reaction kettle, and stirring and mixing for 30 min-1 h at 40-80 ℃ to obtain a mixed component A;
(2) when the temperature of the mixed component A in the reaction kettle is reduced to room temperature (20-30 ℃), adding sodium hydroxide and anionic polyacrylamide into the mixed component A, and stirring and mixing for 30 min-1 h to obtain the product.
The invention has the advantages that:
(1) the grinding fluid prepared by the invention does not contain toxic and harmful components, does not cause harm to the health of a user, has little pollution to the environment, and belongs to green environment-friendly water-based grinding fluid.
(2) The grinding fluid prepared by the invention does not contain substances which can be chelated with cobalt, such as triethanolamine and the like, and the added high-efficiency antirust agent and corrosion inhibitor can effectively inhibit the leaching of cobalt on the surface of the alloy and prevent the corrosion of equipment parts.
(3) The grinding fluid prepared by the invention has excellent lubricity, cooling property, cleaning property and antirust property, and simultaneously has good defoaming property and settleability.
(4) The pH value of the grinding fluid prepared by the invention is 9.0-10.0, so that the breeding of bacteria in a system can be effectively inhibited, and the service life of the grinding fluid is prolonged.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1
The proportion of the special aqueous grinding fluid for hard alloy is shown in table 1
Table 1 ratio of each component
A preparation method of a special water-based grinding fluid for hard alloy comprises the following specific steps:
a) weighing the corresponding materials according to the mass percentage.
b) Adding polyethylene glycol-400, fatty alcohol-polyoxyethylene ether, triethanolamine borate, lauric acid, sodium oleate soap, benzotriazole, an organic silicon defoamer and water into a reaction kettle, and stirring and mixing for 30 min-1 h at 40 ℃ to obtain a mixed component A;
c) when the temperature of the mixed component A in the reaction kettle is reduced to room temperature (20-30 ℃), adding sodium hydroxide and anionic polyacrylamide into the mixed component A, and stirring and mixing for 30 min-1 h to obtain the product.
The product is applied to a soaking experiment of a YG6 alloy sample:
diluting a certain amount of product with water (product: water is 1: 15), soaking the ground alloy sample in the diluted solution for 24h (the samples are placed in an overlapping way and a separated way), taking out the sample, washing with deionized water and wiping, observing the appearance of the alloy sample, detecting the cobalt content of the ground surface of the sample, and determining the cobalt leaching rate of the ground surface of the sample according to the appearance of the sample and the cobalt leaching rate of the ground surface of the sample
The corrosion resistance of the grinding fluid was evaluated, and the test results are shown in table 5.
Example 2:
the proportion of the special aqueous grinding fluid for hard alloy is shown in Table 2
TABLE 2 component ratios
A preparation method of a special water-based grinding fluid for hard alloy comprises the following specific steps:
a) weighing the corresponding materials according to the mass percentage.
b) Adding polyethylene glycol-600, fatty alcohol-polyoxyethylene ether, triethanolamine borate, lauric acid, sodium oleate soap, methyl benzotriazole, an organic silicon defoamer and water into a reaction kettle, and stirring and mixing for 30 min-1 h at 80 ℃ to obtain a mixed component A;
c) when the temperature of the mixed component A in the reaction kettle is reduced to room temperature (20-30 ℃), adding sodium hydroxide and anionic polyacrylamide into the mixed component A, and stirring and mixing for 30 min-1 h to obtain the product.
The product is applied to a soaking experiment of a YG6 alloy sample: a certain amount of the product was diluted with water (product: water: 1: 20), and the rest of the procedure was the same as in example 1.
Example 3:
the proportion of the special aqueous grinding fluid for hard alloy is shown in Table 3
TABLE 3 component ratios of the respective components
A preparation method of a special water-based grinding fluid for hard alloy comprises the following specific steps:
a) weighing the corresponding materials according to the mass percentage.
b) Adding polyethylene glycol-400, alkylphenol ethoxylates, triethanolamine borate, lauric acid, sodium oleate soap, methylbenzotriazole, an organic silicon defoamer and water into a reaction kettle, and stirring and mixing for 30 min-1 h at the temperature of 60 ℃ to obtain a mixed component A;
c) when the temperature of the mixed component A in the reaction kettle is reduced to room temperature (20-30 ℃), adding sodium hydroxide and anionic polyacrylamide into the mixed component A, and stirring and mixing for 30 min-1 h to obtain the product.
The product is applied to a soaking experiment of a YG6 alloy sample: a certain amount of the product was diluted with water (product: water: 1: 18), and the rest was the same as in example 1.
Comparative example
Two grinding fluids XY-A and 618A in the prior art are selected, the components of which are shown in a table 4,
TABLE 4 component ratios of XY-A and 618A grinding fluids
The YG6 alloy sample is applied to two prior grinding fluids for soaking comparison experiment:
a certain amount of XY-a was diluted with water (XY-a: 1: 18) and the rest was the same as in example 1.
A defined amount of 618A was diluted with water (618A: 1: 18) and the rest of the procedure was as in example 1.
Results of soaking test for each example and comparative example:
table 5 soaking test results
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (2)
1. The special water-based grinding fluid for grinding the hard alloy is characterized in that: the weight percentage of the components is as follows:
polyethylene glycol-400 or polyethylene glycol-600: 13.0 to 18.0 percent
Fatty alcohol-polyoxyethylene ether or alkylphenol polyoxyethylene ether: 5.0 to 8.0 percent
Triethanolamine borate ester: 6.0 to 10.0 percent
And (2) lauric acid: 6.0 to 9.0 percent
Sodium oleate soap: 4.0 to 6.0 percent
Benzotriazole or tolyltriazole: 0.25 to 0.5 percent
Sodium hydroxide: 3.0 to 5.0 percent
And (3) organic silicon defoaming agent: 1.0 to 2.0%
Anionic polyacrylamide: 0.1 to 0.5 percent
The balance being water.
2. The method for preparing the special aqueous grinding fluid for grinding and processing the hard alloy according to claim 1 is characterized by comprising the following steps of:
(1) adding polyethylene glycol-400 or polyethylene glycol-600, fatty alcohol-polyoxyethylene ether or alkylphenol ethoxylates, triethanolamine borate, lauric acid, sodium oleate soap, benzotriazole or methyl benzotriazole, an organic silicon defoamer and water into a reaction kettle, and stirring and mixing for 30 min-1 h at 40-80 ℃ to obtain a mixed component A;
(2) when the temperature of the mixed component A in the reaction kettle is reduced to room temperature, adding sodium hydroxide and anionic polyacrylamide into the mixed component A, and stirring and mixing for 30 min-1 h.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989883A (en) * | 2022-07-21 | 2022-09-02 | 天津开放大学 | Environment-friendly low-freezing-point water-based cutting fluid |
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| CN114989883A (en) * | 2022-07-21 | 2022-09-02 | 天津开放大学 | Environment-friendly low-freezing-point water-based cutting fluid |
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Application publication date: 20210604 |