CN106755814A - A kind of antifriction alloy processing environment-friendly type quenching medium and preparation method thereof - Google Patents
A kind of antifriction alloy processing environment-friendly type quenching medium and preparation method thereof Download PDFInfo
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- CN106755814A CN106755814A CN201611251083.7A CN201611251083A CN106755814A CN 106755814 A CN106755814 A CN 106755814A CN 201611251083 A CN201611251083 A CN 201611251083A CN 106755814 A CN106755814 A CN 106755814A
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- 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
- C21D1/58—Oils
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Abstract
The invention discloses a kind of antifriction alloy processing environment-friendly type quenching medium, environment-friendly type quenching medium is used in the antifriction alloy processing, in parts by weight, is made up of following raw material：5 13 parts of ethanol, 27 parts of acetic acid acid esters, 0.5 1.4 parts of stearic acid, 7 10 parts of sodium sulphate, 24 parts of potassium hydroxide, 15 26 parts of starch from sweet potato, 6 acetyl-o-methyls 2,38 parts of 2 dimethyl, 1,3 dioxolanes tert-butyl acetate, 5 10 parts of D aspartic acids, 10 17 parts of palm oil, 8 12 parts of polyethylene glycol；Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, then added water and be transferred in reactor, after reaction terminates, cooling adds acetic acid acid esters and the dimethyl 1 of 6 acetyl-o-methyl 2,2,3 dioxolanes tert-butyl acetates, stand after stirring；Then it is centrifuged, supernatant is taken after centrifugation, addition sodium sulphate, potassium hydroxide, D aspartic acids and polyethylene glycol is heated up after stirring, are incubated and cooling and paraffin oil seal, obtained final product.The present invention prepare quenching medium can pole substantially increase Wear Resistance.
Description
Technical field
The present invention relates to field of material technology, environment-friendly type quenching medium is used in specifically a kind of antifriction alloy processing.
Background technology
Quenching medium is a kind of process oil, is used as hardening media.Quenching medium must possess following characteristic：Good cooling
Energy, high-flash and burning-point, good thermal oxidation stability, low viscosity, water content are low.In addition to above-mentioned characteristic, quenching medium is also
Should be nontoxic, tasteless, disposable, environmentally safe, and make the light of the workpiece surface after quenching.Can be divided into according to cooling velocity：
(1) normal quenching agent；(2) rapid quenching agent；(3) (height) speed quenching medium is surpassed.Hypervelocity quenching medium has quickish cooling velocity,
Than rapid quenching agent faster.The oil be add in refined paraffin wax based lubricating oil urge cryogen, detersive and antioxidant etc. modulate and
Into.Oil temperature its characteristic temperature at 800 DEG C is not less than 585 DEG C, by 800 DEG C of times for being cooled to 400 DEG C than rapid quenching agent more
It is short.In use, organic solution after heated can accelerated ageing, be allowed to cool characteristic and change, such as change not in time, will make
Ways of Heat Treatment Product Quality declines, or even unqualified.The Quenching Treatment for high-abrasive material workpiece is not unified also in the market
Quenching medium, high-abrasive material quenching processing technology is the important step for feeling its workpiece toughness, research and develop high-abrasive material class quenching medium
It is necessary.
The content of the invention
It is an object of the invention to provide a kind of antifriction alloy processing environment-friendly type quenching medium, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the present invention provides following technical scheme：
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol
5-13 parts, 2-7 parts of acetic acid acid esters, stearic acid 0.5-1.4 parts, sodium sulphate 7-10 parts, potassium hydroxide 2-4 parts, starch from sweet potato 15-26
Part, 6- acetyl-o-methyl -2,2- dimethyl -1,3- dioxolanes-tert-butyl acetate 3-8 parts, D-Asp 5-10 parts, palm
It is oily 10-17 parts, polyethylene glycol 8-12 parts.
As further scheme of the invention：In parts by weight, it is made up of following raw material：Ethanol 8-11 parts, acetic acid acid esters
4-6 parts, stearic acid 0.8-1.1 parts, sodium sulphate 8-9 parts, potassium hydroxide 2-4 parts, starch from sweet potato 18-24 parts, 6- acetyl-o-methyls-
2,2- dimethyl -1,3- dioxolanes-tert-butyl acetate 3-8 parts, D-Asp 5-10 parts, palm oil 14-17 parts, poly- second two
Alcohol 8-12 parts.
As further scheme of the invention：In parts by weight, it is made up of following raw material：10 parts of ethanol, acetic acid acid esters 5
Part, 0.9 part of stearic acid, 9 parts of sodium sulphate, 3 parts of potassium hydroxide, 21 parts of starch from sweet potato, 6- acetyl-o-methyl -2,2- dimethyl -1,
3- dioxolanes -6 parts of tert-butyl acetate, 8 parts of D-Asp, 16 parts of palm oil, 10 parts of polyethylene glycol.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 140-154 DEG C, 800-1000r/min, 2-3MPa, and the reaction time is 1-
2h, after reaction terminates, temperature is down to 80-90 DEG C, adds acetic acid acid esters and 6- acetyl-o-methyl -2,2- dimethyl -1,3- dioxies
Penta ring-tert-butyl acetate, stands after stirring 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 10000-12000r/min, centrifugation time is 5-10min, and supernatant is taken after centrifugation
Liquid, addition sodium sulphate, potassium hydroxide, D-Asp and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, most
After be cooled to room temperature, paraffin oil seal is obtained final product.
As further scheme of the invention：Specific steps（1）Middle reaction condition is 147 DEG C, 900r/min, 2.5MPa.
As further scheme of the invention：Specific steps（1）Middle temperature is down to 85 DEG C.
As further scheme of the invention：Specific steps（2）Middle centrifugal rotational speed is 11000r/min, and centrifugation time is
8min。
Compared with prior art, the beneficial effects of the invention are as follows：
The invention discloses a kind of antifriction alloy processing environment-friendly type quenching medium, the antifriction alloy processing is quenched with environment-friendly type
Agent, in parts by weight, is made up of following raw material：Ethanol 5-13 parts, 2-7 parts of acetic acid acid esters, stearic acid 0.5-1.4 parts, sodium sulphate
7-10 parts, potassium hydroxide 2-4 parts, starch from sweet potato 15-26 parts, 6- acetyl-o-methyl -2,2- dimethyl -1,3- dioxolanes-second
Tert-butyl acrylate 3-8 parts, D-Asp 5-10 parts, palm oil 10-17 parts, polyethylene glycol 8-12 parts；First by stearic acid, Ipomoea batatas
Starch, palm oil are dissolved in ethanol, obtain mixed liquor, are then added water and are transferred in reactor, and after reaction terminates, cooling adds
Enter acetic acid acid esters and 6- acetyl-o-methyl -2,2- dimethyl-DOX-tert-butyl acetate stands after stirring；Then enter
Row centrifugation, takes supernatant after centrifugation, addition sodium sulphate, potassium hydroxide, D-Asp and polyethylene glycol rise after stirring
Temperature, insulation and cooling and paraffin oil seal, obtain final product.The present invention prepare quenching medium can pole substantially increase Wear Resistance.
Specific embodiment
The technical scheme of this patent is described in more detail with reference to specific embodiment.
Embodiment 1
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol 5
Part, 2 parts of acetic acid acid esters, 0.5 part of stearic acid, 7 parts of sodium sulphate, 2 parts of potassium hydroxide, 15 parts of starch from sweet potato, 6- acetyl-o-methyl -2,
2- dimethyl -1,3- dioxolanes -3 parts of tert-butyl acetate, 5 parts of D-Asp, 10 parts of palm oil, 8 parts of polyethylene glycol.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 140 DEG C, 800r/min, 2MPa, and the reaction time is 1h, and reaction terminates
Afterwards, temperature is down to 80 DEG C, adds acetic acid acid esters and 6- acetyl-o-methyl -2, the 2- dimethyl-tertiary fourth of DOX-acetic acid
Ester, stands after stirring 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 10000r/min, centrifugation time is 5min, supernatant is taken after centrifugation, is added sulphur
Sour sodium, potassium hydroxide, D-Asp and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, is finally cooled to
Room temperature, paraffin oil seal, obtains final product.
Embodiment 2
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol 8
Part, 4 parts of acetic acid acid esters, 0.8 part of stearic acid, 8 parts of sodium sulphate, 2 parts of potassium hydroxide, 18 parts of starch from sweet potato, 6- acetyl-o-methyl -2,
2- dimethyl -1,3- dioxolanes -3 parts of tert-butyl acetate, 5 parts of D-Asp, 14 parts of palm oil, 8 parts of polyethylene glycol.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 145 DEG C, 800r/min, 2MPa, and the reaction time is 1h, and reaction terminates
Afterwards, temperature is down to 83 DEG C, adds acetic acid acid esters and 6- acetyl-o-methyl -2, the 2- dimethyl-tertiary fourth of DOX-acetic acid
Ester, stands after stirring 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 10000r/min, centrifugation time is 5min, supernatant is taken after centrifugation, is added sulphur
Sour sodium, potassium hydroxide, D-Asp and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, is finally cooled to
Room temperature, paraffin oil seal, obtains final product.
Embodiment 3
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol
10 parts, 5 parts of acetic acid acid esters, 0.9 part of stearic acid, 9 parts of sodium sulphate, 3 parts of potassium hydroxide, 21 parts of starch from sweet potato, 6- acetyl-o-methyls-
2,2- dimethyl -1,3- dioxolanes -6 parts of tert-butyl acetate, 8 parts of D-Asp, 16 parts of palm oil, 10 parts of polyethylene glycol.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 147 DEG C, 900r/min, 2.5MPa, and the reaction time is 1.5h, reaction knot
Shu Hou, temperature is down to 85 DEG C, adds acetic acid acid esters and 6- acetyl-o-methyl -2, the 2- dimethyl-tertiary fourth of DOX-acetic acid
Ester, stands after stirring 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 11000r/min, centrifugation time is 8min, supernatant is taken after centrifugation, is added sulphur
Sour sodium, potassium hydroxide, D-Asp and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, is finally cooled to
Room temperature, paraffin oil seal, obtains final product.
Embodiment 4
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol
11 parts, 6 parts of acetic acid acid esters, 1.1 parts of stearic acid, 9 parts of sodium sulphate, 4 parts of potassium hydroxide, 24 parts of starch from sweet potato, 6- acetyl-o-methyls-
2,2- dimethyl -1,3- dioxolanes -8 parts of tert-butyl acetate, 10 parts of D-Asp, 17 parts of palm oil, 12 parts of polyethylene glycol.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 154 DEG C, 1000r/min, 3MPa, and the reaction time is 2h, and reaction terminates
Afterwards, temperature is down to 90 DEG C, adds acetic acid acid esters and 6- acetyl-o-methyl -2, the 2- dimethyl-tertiary fourth of DOX-acetic acid
Ester, stands after stirring 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 12000r/min, centrifugation time is 10min, and supernatant is taken after centrifugation, is added
Sodium sulphate, potassium hydroxide, D-Asp and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, finally lowers the temperature
To room temperature, paraffin oil seal is obtained final product.
Embodiment 5
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol
13 parts, 7 parts of acetic acid acid esters, 1.4 parts of stearic acid, 10 parts of sodium sulphate, 4 parts of potassium hydroxide, 26 parts of starch from sweet potato, 6- acetyl oxygen first
Base -2,2- dimethyl -1,3- dioxolanes -8 parts of tert-butyl acetate, 10 parts of D-Asp, 17 parts of palm oil, polyethylene glycol 12
Part.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 154 DEG C, 1000r/min, 3MPa, and the reaction time is 2h, and reaction terminates
Afterwards, temperature is down to 90 DEG C, adds acetic acid acid esters and 6- acetyl-o-methyl -2, the 2- dimethyl-tertiary fourth of DOX-acetic acid
Ester, stands after stirring 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 12000r/min, centrifugation time is 10min, and supernatant is taken after centrifugation, is added
Sodium sulphate, potassium hydroxide, D-Asp and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, finally lowers the temperature
To room temperature, paraffin oil seal is obtained final product.
Comparative example 1
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol
10 parts, 5 parts of acetic acid acid esters, 0.9 part of stearic acid, 9 parts of sodium sulphate, 3 parts of potassium hydroxide, 21 parts of starch from sweet potato, D-Asp 8
Part, 16 parts of palm oil, 10 parts of polyethylene glycol.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 147 DEG C, 900r/min, 2.5MPa, and the reaction time is 1.5h, reaction knot
Shu Hou, temperature is down to 85 DEG C, adds acetic acid acid esters, is stood after stirring 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 11000r/min, centrifugation time is 8min, supernatant is taken after centrifugation, is added sulphur
Sour sodium, potassium hydroxide, D-Asp and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, is finally cooled to
Room temperature, paraffin oil seal, obtains final product.
Comparative example 2
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol
10 parts, 0.9 part of stearic acid, 9 parts of sodium sulphate, 3 parts of potassium hydroxide, 21 parts of starch from sweet potato, 6- acetyl-o-methyl -2,2- dimethyl -
1,3- dioxolanes -6 parts of tert-butyl acetate, 16 parts of palm oil, 10 parts of polyethylene glycol.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 147 DEG C, 900r/min, 2.5MPa, and the reaction time is 1.5h, reaction knot
Shu Hou, temperature is down to 85 DEG C, adds 6- acetyl-o-methyl -2,2- dimethyl-DOX-tert-butyl acetate, stirring
Stood after 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 11000r/min, centrifugation time is 8min, supernatant is taken after centrifugation, is added sulphur
Sour sodium, potassium hydroxide and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, is finally cooled to room temperature, paraffin oil
Sealing, obtains final product.
Comparative example 3
Environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Ethanol
10 parts, 5 parts of acetic acid acid esters, 0.9 part of stearic acid, 6- acetyl-o-methyl -2,2- dimethyl -1,3- dioxolanes-tert-butyl acetate 6
Part, 8 parts of D-Asp, 16 parts of palm oil, 10 parts of polyethylene glycol.
A kind of antifriction alloy processing preparation method of environment-friendly type quenching medium, concretely comprises the following steps：
（1）Stearic acid, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into the water of 3 times of mixeding liquid volume simultaneously
It is transferred in reactor, reaction condition is 110 DEG C, 600r/min, 2.5MPa, and the reaction time is 1.5h, after reaction terminates, temperature
30 DEG C are down to, acetic acid acid esters and 6- acetyl-o-methyl -2,2- dimethyl-DOX-tert-butyl acetate, stirring is added
Stood after 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 11000r/min, centrifugation time is 8min, supernatant is taken after centrifugation, is added D-
Aspartic acid and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, is finally cooled to room temperature, paraffin oil seal,
Obtain final product.
In sum, it is 40mm's to thickness by the quenching medium that prepared by embodiment of the present invention 1-5 and prepared by comparative example 1-3
40Cr steel plates are quenched, and quenching temperature is 542-567 DEG C in quenching medium prepared by embodiment of the present invention 1-5, after quenching,
The hardness for measuring 40Cr steel plates is HRC67-75, without cracking phenomena, diameter 400mm corundum wheels, rotating speed be 3000r/min,
Contact pressure is under conditions of 50KN, its rub proofness is 0.032~0.056mm3/h；Quenched in quenching medium prepared by comparative example 1-3
Fiery heating-up temperature is 582-630 DEG C, and after quenching, the hardness for measuring 40Cr steel plates is HRC43-52, there is cracking phenomena, in diameter
400mm corundum wheels, rotating speed be 3000r/min, contact pressure under conditions of 50KN, its rub proofness is 0.097~
0.121mm3/h。
The better embodiment to this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, in the ken that one skilled in the relevant art possesses, can also be on the premise of this patent objective not be departed from
Make a variety of changes.
Claims (7)
1. environment-friendly type quenching medium is used in a kind of antifriction alloy processing, it is characterised in that in parts by weight, be made up of following raw material：Second
Alcohol 5-13 parts, 2-7 parts of acetic acid acid esters, stearic acid 0.5-1.4 parts, sodium sulphate 7-10 parts, potassium hydroxide 2-4 parts, starch from sweet potato 15-
26 parts, 6- acetyl-o-methyl -2,2- dimethyl -1,3- dioxolanes-tert-butyl acetate 3-8 parts, D-Asp 5-10 parts, palm fibre
10-17 parts, polyethylene glycol 8-12 parts of palmitic acid oil.
2. environment-friendly type quenching medium is used in antifriction alloy processing according to claim 1, it is characterised in that in parts by weight, by
Following raw material composition：Ethanol 8-11 parts, 4-6 parts of acetic acid acid esters, stearic acid 0.8-1.1 parts, sodium sulphate 8-9 parts, potassium hydroxide 2-4
Part, starch from sweet potato 18-24 parts, 6- acetyl-o-methyl -2,2- dimethyl -1,3- dioxolanes-tert-butyl acetate 3-8 parts, D- days
Propylhomoserin 5-10 parts, palm oil 14-17 parts, polyethylene glycol 8-12 parts of winter.
3. environment-friendly type quenching medium is used in antifriction alloy processing according to claim 1, it is characterised in that in parts by weight, by
Following raw material composition：10 parts of ethanol, 5 parts of acetic acid acid esters, 0.9 part of stearic acid, 9 parts of sodium sulphate, 3 parts of potassium hydroxide, starch from sweet potato
21 parts, 6- acetyl-o-methyl -2,2- dimethyl -1,3- dioxolanes -6 parts of tert-butyl acetate, 8 parts of D-Asp, palm oil
16 parts, 10 parts of polyethylene glycol.
4. a kind of antifriction alloy as described in claim 1-3 is any is processed with the preparation method of environment-friendly type quenching medium, its feature
It is to concretely comprise the following steps：
（1）Stearic acid, starch from sweet potato, palm oil are dissolved in ethanol first, obtain mixed liquor, be subsequently added into mixeding liquid volume
3 times of water is simultaneously transferred in reactor, and reaction condition is 140-154 DEG C, 800-1000r/min, 2-3MPa, and the reaction time is 1-
2h, after reaction terminates, temperature is down to 80-90 DEG C, adds acetic acid acid esters and 6- acetyl-o-methyl -2,2- dimethyl -1,3- dioxies
Penta ring-tert-butyl acetate, stands after stirring 10min；
（2）Then it is centrifuged, centrifugal rotational speed is 10000-12000r/min, centrifugation time is 5-10min, and supernatant is taken after centrifugation
Liquid, addition sodium sulphate, potassium hydroxide, D-Asp and polyethylene glycol, after stirring, temperature rises to 63 DEG C, is incubated 1h, most
After be cooled to room temperature, paraffin oil seal is obtained final product.
5. antifriction alloy according to claim 4 is processed with the preparation method of environment-friendly type quenching medium, it is characterised in that specific
Step（1）Middle reaction condition is 147 DEG C, 900r/min, 2.5MPa.
6. antifriction alloy according to claim 4 is processed with the preparation method of environment-friendly type quenching medium, it is characterised in that specific
Step（1）Middle temperature is down to 85 DEG C.
7. antifriction alloy according to claim 4 is processed with the preparation method of environment-friendly type quenching medium, it is characterised in that specific
Step（2）Middle centrifugal rotational speed is 11000r/min, and centrifugation time is 8min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042204A (en) * | 2019-04-17 | 2019-07-23 | 南宁学院 | Metal tools heat treatment process |
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2016
- 2016-12-30 CN CN201611251083.7A patent/CN106755814A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042204A (en) * | 2019-04-17 | 2019-07-23 | 南宁学院 | Metal tools heat treatment process |
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