CN111074046A - Environment-friendly water-soluble quenching liquid and preparation method thereof - Google Patents
Environment-friendly water-soluble quenching liquid and preparation method thereof Download PDFInfo
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- CN111074046A CN111074046A CN202010044307.7A CN202010044307A CN111074046A CN 111074046 A CN111074046 A CN 111074046A CN 202010044307 A CN202010044307 A CN 202010044307A CN 111074046 A CN111074046 A CN 111074046A
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- 238000010791 quenching Methods 0.000 title claims abstract description 61
- 230000000171 quenching effect Effects 0.000 title claims abstract description 58
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims description 9
- 238000003756 stirring Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229920001515 polyalkylene glycol Polymers 0.000 claims abstract description 17
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 230000007797 corrosion Effects 0.000 claims abstract description 16
- 238000005260 corrosion Methods 0.000 claims abstract description 16
- 239000003112 inhibitor Substances 0.000 claims abstract description 16
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000008367 deionised water Substances 0.000 claims abstract description 10
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 10
- -1 compound amine Chemical class 0.000 claims abstract description 9
- 239000002253 acid Substances 0.000 claims abstract description 8
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 10
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 21
- 229920000642 polymer Polymers 0.000 abstract description 9
- 238000005336 cracking Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 229940043237 diethanolamine Drugs 0.000 description 9
- 239000013530 defoamer Substances 0.000 description 6
- HCUZVMHXDRSBKX-UHFFFAOYSA-N 2-decylpropanedioic acid Chemical compound CCCCCCCCCCC(C(O)=O)C(O)=O HCUZVMHXDRSBKX-UHFFFAOYSA-N 0.000 description 4
- WMRCTEPOPAZMMN-UHFFFAOYSA-N 2-undecylpropanedioic acid Chemical compound CCCCCCCCCCCC(C(O)=O)C(O)=O WMRCTEPOPAZMMN-UHFFFAOYSA-N 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses an environment-friendly water-soluble quenching liquid which comprises the following components in percentage by mass: 25-45% of polyalkylene glycol, 5-10% of compound amine, 1-3% of polycarboxylic acid, 0-1% of defoaming agent, 0-2% of antioxidant, 0-1% of corrosion inhibitor and the balance of deionized water, dissolving the compound amine, adding the carboxylic acid, stirring for reaction, then sequentially adding the antioxidant and the corrosion inhibitor, stirring uniformly, then adding the polyalkylene glycol polymer for reaction, finally adding the defoaming agent, and stirring uniformly. The cooling performance of the environment-friendly water-soluble quenching liquid provided by the invention is between that of water and oil, so that the cracking and quenching soft spots of water quenching can be avoided, the defects of no hardening and no quenching of oil quenching can be overcome, the cooling speed can be adjusted by changing the concentration so as to be suitable for workpieces of different hardenability materials and different sizes, and the quenching liquid is a non-nitrite system, so that the environment-friendly water-soluble quenching liquid is safe and environment-friendly.
Description
Technical Field
The invention belongs to the technical field of heat treatment cooling media, and particularly relates to an environment-friendly water-soluble quenching liquid and a preparation method thereof.
Background
For years, China has done a lot of work in the aspect of research and application of quenching media, has achieved better results, basically meets the needs of some heat treatment production, but has certain gap compared with the advanced level abroad. The desired effect of quenching the workpiece is to achieve a high and uniform surface hardness and a sufficient hardening depth, to avoid quench cracking and to minimize quench distortion. At present, mineral oil is still used as a cooling medium in part of enterprises in the heat treatment industry, and a considerable part of mineral oil is discharged into the natural environment to cause pollution. The water-soluble quenching medium PAG is an ideal quenching medium according to the evaluation of the cooling capacity of the cooling medium, can solve the problems of insufficient depth and hardenability of an oil quenching hardening layer, instability of an oil cooling process, easy cracking of water quenching and the like, and can obtain good mechanical properties. The invention provides an environment-friendly water-soluble PAG quenching medium, which can solve the problems of low quenching hardness and strength, uneven hardness, soft quenching point, deformation, cracking and the like of a workpiece and also solve the problem of environmental protection.
Disclosure of Invention
Aiming at various problems of the quenching liquid in the prior art, the invention provides the environment-friendly water-soluble quenching liquid, simultaneously solves the problems of oily and water-based quenching media, improves the hardness uniformity of the quenched product, ensures that the quenched product does not deform and crack at low temperature, and is environment-friendly and safe.
In order to achieve the purpose, the invention provides the following technical scheme: the environment-friendly water-soluble quenching liquid is characterized by comprising the following components: the paint comprises polyalkylene glycol, compound amine, polycarboxylic acid, a defoaming agent, an antioxidant, a corrosion inhibitor and deionized water. The polyalkylene glycol polymer has inverse solubility, when a workpiece enters quenching liquid, the temperature of the workpiece is high, the polymer is quickly separated out to form a layer of polymer film to cover the surface of the workpiece, the contact between the workpiece and the solution is prevented, and after the temperature of the workpiece is cooled down, the polymer is dissolved in the solution, so that the hardness uniformity of a quenched product can be improved, and the product is protected from deformation and cracking.
Preferably, the environment-friendly water-soluble quenching liquid comprises the following components in parts by weight: 25-45% of polyalkylene glycol, 5-10% of compound amine, 1-3% of polycarboxylic acid, 0-1% of defoaming agent, 0-2% of antioxidant, 0-1% of corrosion inhibitor and the balance of deionized water.
Preferably, the complex amine comprises at least two of monoethanolamine, diethanolamine and triethanolamine.
Preferably, the polycarboxylic acid is dicarboxylic acid, and the carbon number is 8-12.
Preferably, the defoaming agent is a non-silicon defoaming agent.
Preferably, the preparation method of the environment-friendly water-soluble quenching liquid comprises the following steps: dissolving the compound amine, adding carboxylic acid, stirring for reaction, then sequentially adding the antioxidant and the corrosion inhibitor, stirring uniformly, then adding the polyalkylene glycol polymer for reaction, finally adding the defoaming agent, and stirring uniformly.
Preferably, the pH of the quenching liquid is 8-10.
Preferably, the stirring speed is 50 to 300 rpm.
Compared with the prior art, the invention has the beneficial effects that: 1. the cooling performance is between water and oil, thereby not only avoiding water quenching cracking and quenching soft spots, but also solving the defects of no hardness and no hardening of oil quenching; 2. by changing the concentration, the cooling speed can be adjusted to be suitable for workpieces with different hardenability materials and different sizes; 3. the non-nitrite system is beneficial to operators and the environment.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the embodiments described are only some representative embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example 1
The environment-friendly water-soluble quenching liquid comprises 25% of polyalkylene glycol, 5% of monoethanolamine, 5% of diethanolamine, 1% of dodecanedicarboxylic acid, 0.5% of defoamer, 0.5% of antioxidant, 0.5% of corrosion inhibitor and the balance of deionized water.
The preparation method of the environment-friendly water-soluble quenching liquid comprises the following steps: dissolving monoethanolamine and diethanolamine, adding dodecanedicarboxylic acid, stirring for reaction, sequentially adding antioxidant and corrosion inhibitor, stirring uniformly, adding polyalkylene glycol polymer for reaction, adding defoamer, and stirring uniformly.
Example 2
The environment-friendly water-soluble quenching liquid comprises 30% of polyalkylene glycol, 8% of diethanolamine, 1.5% of dodecanedicarboxylic acid, 0.5% of a defoaming agent, 1% of an antioxidant, 0.5% of a corrosion inhibitor and the balance of deionized water.
The preparation method of the environment-friendly water-soluble quenching liquid comprises the following steps: dissolving diethanol amine, adding dodecanedicarboxylic acid, stirring for reaction, sequentially adding an antioxidant and a corrosion inhibitor, stirring uniformly, adding a polyalkylene glycol polymer for reaction, adding a defoaming agent, and stirring uniformly.
Example 3
The environment-friendly water-soluble quenching liquid comprises 40% of polyalkylene glycol, 3% of monoethanolamine, 6% of diethanolamine, 2% of undecane dicarboxylic acid, 1% of defoamer, 1% of antioxidant, 0.5% of corrosion inhibitor and the balance of deionized water.
The preparation method of the environment-friendly water-soluble quenching liquid comprises the following steps: dissolving monoethanolamine and diethanolamine, adding undecane dicarboxylic acid, stirring for reaction, sequentially adding antioxidant and corrosion inhibitor, stirring uniformly, adding polyalkylene glycol polymer for reaction, adding defoamer, and stirring uniformly.
Example 4
The environment-friendly water-soluble quenching liquid comprises 45% of polyalkylene glycol, 3% of monoethanolamine, 3% of diethanolamine, 2% of undecane dicarboxylic acid, 1% of defoamer, 1% of antioxidant, 1% of corrosion inhibitor and the balance of deionized water.
The preparation method of the environment-friendly water-soluble quenching liquid comprises the following steps: dissolving monoethanolamine and diethanolamine, adding undecane dicarboxylic acid, stirring for reaction, sequentially adding antioxidant and corrosion inhibitor, stirring uniformly, adding polyalkylene glycol polymer for reaction, adding defoamer, and stirring uniformly.
Comparative example 1
Commercially available water-based PAG (polyethers) products.
The cooling capacity of the thermal characteristics of the quenching liquid was tested by the cooling curve method. ISO9950 is adopted, and the probe is made of nickel-chromium alloy, has the diameter of 12.5mm and the length of 60 mm. The quenching liquid addition concentration is controlled at 20%, the quenching liquid temperature is controlled at 40 ℃, the quenching liquid cooling capacity tests are respectively carried out on examples 1-4 and comparative example 1, and the test results are as follows:
TABLE 1 quenching Medium Cooling characteristics
According to the experimental results, the aqueous quenching liquid provided by the invention can be cooled rapidly in a high-temperature stage, and has a lower cooling rate in a low-temperature stage, and particularly, the example 4 shows more excellent quenching characteristics. Comparative example 1 although the cooling rate was faster in the high temperature stage, the cooling rate was also fast in the low temperature stage, which actually caused cracking of the workpiece during use. Therefore, compared with the water-based PAG (polyether) products sold in the market, the water-based quenching agent provided by the invention has the advantages of more reasonable cooling performance, high-temperature cooling speed, capability of improving the performance of the workpiece, slow low-temperature cooling speed and capability of preventing the workpiece from cracking and deforming.
The physical property test results of the quenching liquid are as follows:
TABLE 2 physical Properties of the quench liquors
Further, example 4 was tested for cooling characteristics at different usage amounts, and the experimental results were as follows:
TABLE 3 influence of the amount of quenching liquid added on the cooling characteristics
As can be seen from table 3, since the cooling characteristics are greatly changed by the influence of the addition amount, the cooling rate can be adjusted by changing the concentration in actual use so as to be suitable for workpieces of different hardenability materials and different sizes.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The environment-friendly water-soluble quenching liquid is characterized by comprising the following components: the paint comprises polyalkylene glycol, compound amine, polycarboxylic acid, a defoaming agent, an antioxidant, a corrosion inhibitor and deionized water.
2. The environment-friendly water-soluble quenching liquid is characterized by comprising the following components in percentage by weight: 25-45% of polyalkylene glycol, 5-10% of compound amine, 1-3% of polycarboxylic acid, 0-1% of defoaming agent, 0-2% of antioxidant, 0-1% of corrosion inhibitor and the balance of deionized water.
3. The environment-friendly water-soluble quenching liquid as claimed in claim 1, wherein the compound amine is at least two of monoethanolamine, diethanolamine and triethanolamine.
4. The environment-friendly water-soluble quenching liquid as claimed in claim 1, wherein the polycarboxylic acid is dicarboxylic acid, and the carbon number is 8-12.
5. The environment-friendly water-soluble quenching liquid as claimed in claim 1, wherein the defoaming agent is a non-silicon defoaming agent.
6. The preparation method of the environment-friendly water-soluble quenching liquid as claimed in claim 1, characterized by comprising the following steps: dissolving the compound amine by using deionized water, adding polycarboxylic acid, stirring for reaction, then sequentially adding an antioxidant and a corrosion inhibitor, then adding polyalkylene glycol for reaction, finally adding a defoaming agent, and uniformly mixing.
7. The method for preparing the environment-friendly water-soluble quenching liquid as claimed in claim 6, wherein the pH of the environment-friendly water-soluble quenching liquid is 8-10.
8. The method for preparing the environment-friendly water-soluble quenching liquid as claimed in claim 6, wherein the stirring speed is 50-300 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010044307.7A CN111074046A (en) | 2020-01-15 | 2020-01-15 | Environment-friendly water-soluble quenching liquid and preparation method thereof |
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| CN202010044307.7A CN111074046A (en) | 2020-01-15 | 2020-01-15 | Environment-friendly water-soluble quenching liquid and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115505699A (en) * | 2021-06-23 | 2022-12-23 | 中国石油化工股份有限公司 | Quenching liquid composition and preparation method and application thereof |
| CN115948015A (en) * | 2022-12-23 | 2023-04-11 | 南京科润工业介质股份有限公司 | Characterization method for film forming property of water-soluble quenching medium |
| CN116287594A (en) * | 2022-09-08 | 2023-06-23 | 湖南恒佳新材料科技有限公司 | A kind of environment-friendly water-based quenching liquid and preparation method thereof |
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| CN115948015B (en) * | 2022-12-23 | 2023-12-08 | 南京科润工业介质股份有限公司 | Characterization method of film forming performance of water-soluble quenching medium |
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Application publication date: 20200428 |