CN108505047A - A kind of brightening solution for stainless steel and preparation method thereof - Google Patents
A kind of brightening solution for stainless steel and preparation method thereof Download PDFInfo
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- CN108505047A CN108505047A CN201810530931.0A CN201810530931A CN108505047A CN 108505047 A CN108505047 A CN 108505047A CN 201810530931 A CN201810530931 A CN 201810530931A CN 108505047 A CN108505047 A CN 108505047A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
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Abstract
The invention discloses a kind of brightening solution for stainless steel, raw material by weight percentage for example under：Solid lubrication fat 20 30%, deionized water 5 15%, dispersant 3 5%, water-soluble lubricating fat 30 35%, bleeding agent 3 5%, polishing agent 5 10% and face coat protective agent 3 5%.The present invention is by strictly controlling the percentage and preparation technology parameter of each component of brightening solution for stainless steel, the solid lubrication fat of use, deionized water, dispersant, water-soluble lubricating fat, bleeding agent, polishing agent and face coat protective agent, which are used as, prepares raw material, Costco Wholesale is low, the pernicious gases such as NOx are not will produce, it avoids causing environmental pollution, pass through the dispersant of addition, material particles can be promoted to be dispersed in medium, form the medicament of stable suspension, avoid the occurrence of sedimentation phenomenon, by the way that face coat protective agent is added in the polishing fluid, it can be when in use, so that stainless steel surface generates passivation, prevent surface oxidation from generating one layer of gray oxide film, ensure the brightness of stainless steel product itself.
Description
Technical field
The present invention relates to polishing fluid technical field, specially a kind of brightening solution for stainless steel, while the invention further relates to one kind
The preparation method of brightening solution for stainless steel.
Background technology
Chemical polishing is the common process of surface treatment of stainless steel, compared with electrolytic brightening process, its biggest advantage is that not
DC power supply and special fixtures are needed, complex-shaped part can be polished；It is highly efficient in productivity.For functionality, chemistry
Polishing can remove the mechanical damage layer and stressor layers of stainless steel surface, obtain the surface of mechanical cleaning degree, this is conducive to prevent zero
The local corrosion of part improves mechanical strength, extends part service life.Stainless steel has corrosion-resistant, wear-resistant, easy processing etc. excellent
Benign energy.Chemical polishing is with advantages and by general application：1) equipment is simple, at low cost, is not necessarily to power supply and hanger, exempts machinery
Sand belt carrys out the big labour of intensity；2) efficient, it is easy to get as bright as a sixpence surface；3) complex-shaped system can be polished
Product.
In recent years, applying for brightening solution for stainless steel is increasing rapidly, but in stainless steel watch surface treatment, surface is easy
Generate one layer of gray oxide film, cause stainless steel product brightness itself inadequate, the brightening solution for stainless steel of import costly, state
Inexpensively, product quality is irregular for production.Contain nitric acid in most polishing fluids, it is harmful that when polishing will produce a large amount of NOx etc.
Gas, to pollute environment and be detrimental to health.It is therefore desirable to development quality height, and production cost is low, cost-effective, environmental protection
Brightening solution for stainless steel become a problem.
Invention content
The purpose of the present invention is to provide a kind of brightening solution for stainless steel and preparation method thereof, and Costco Wholesale is low, not will produce
The pernicious gases such as NOx avoid causing environmental pollution, by the dispersant of addition, material particles can be promoted to be dispersed in Jie
In matter, the medicament of stable suspension is formed, sedimentation phenomenon is avoided the occurrence of, by the way that face coat protection is added in the polishing fluid
Agent, can be when in use so that stainless steel surface generates passivation, prevents surface oxidation from generating one layer of gray oxide film, ensures not
The brightness of rust steel product itself, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides the following technical solutions：A kind of brightening solution for stainless steel, raw material by weight hundred
Divide ratio as follows：Solid lubrication fat 20-30%, deionized water 5-15%, dispersant 3-5%, water-soluble lubricating fat 30-35%,
Bleeding agent 3-5%, polishing agent 5-10% and face coat protective agent 3-5%.
Preferably, the solid lubrication fat is the grease-like semisolid of stiff, and the water-soluble lubricating fat is colorless and odorless
Liquid fat.
Preferably, the dispersant is organic dispersing agent, and the organic dispersing agent is triethyl group hexyl phosphoric acid, dodecyl
It is any one in sodium sulphate, methyl anyl alcohol, cellulose derivative, polyacrylamide, guar gum and fatty acid polyethylene glycol ester
Kind.
Preferably, the bleeding agent be sulfated castor oil, sodium alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl sulfate sodium,
Arbitrary two groups of mixtures in sodium secondary alkyl sulfonate and secondary alkyl sulphate sodium, mixed proportion 1:1.
Preferably, the polishing agent is light yellow transparent liquid preparation, using abrasive micro-powder and distilled water according to 1:5 ratios
It is made into, abrasive material is stearic acid, triethanolamine and soap emulsion mixture, mixed proportion 1:1:1, the granularity of abrasive micro-powder is
0.8-1um。
Preferably, the face coat protective agent is alkyl sulfide alcohols protective agent, fatty acid protective agent and organosilan
Any one protective agent in class protective agent.
The present invention also provides a kind of preparation methods of brightening solution for stainless steel, include the following steps：
S1：Feeding, feeding, by solid lubrication fat, deionized water, dispersant, water-soluble lubricating fat, bleeding agent, polishing agent
It is weighed with face coat protective agent precentagewise example, it is spare；
S2：Mixed once dissolves, and the solid lubrication fat, deionized water and the dispersant that have been sampled in S1 are poured into reaction kettle
It is sufficiently stirred dissolving, mixing time 30-40min, 60-80 DEG C of reaction kettle heating temperature；
S3：It is complete to be put into stirring and dissolving in S2 by secondary mixed dissolution for the water-soluble lubricating fat and bleeding agent that are sampled in S1
At mixed liquor in, be stirred dissolving, mixing time 25-35min, 60-70 DEG C of reaction kettle heating temperature again；
S4：The polishing agent sampled in S1 and face coat protective agent are put into S3 and have been dissolved by mixed dissolution three times
At mixed liquor in dissolved, mixing time 30-40min, reaction kettle stop heating, obtain mixed liquor；
S5：The mixed liquor obtained in S4 is sampled and carries out physical and chemical index test by sample detection；
S6：The brightening solution for stainless steel of acquisition after detection is qualified, is carried out packaging and storage by packaging.
Preferably, for heating water bath temperature control, the volume of reaction kettle is not less than the heated for controlling temperature mode that the reaction kettle uses
100L。
Preferably, the physical and chemical index test event in the step S5 include density measurement, viscosity test, oiliness test,
Acid value test, pour point and condensation point test, antirust test, emulsion resistance test, corrosion test, oxidation stability test, wear resistence are surveyed
Examination and penetration test.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention strictly controls the brightening solution for stainless steel and its system
Preparation Method, by strictly controlling the percentage and preparation technology parameter of each component of brightening solution for stainless steel, the solid profit of use
Consistent lubricant, deionized water, dispersant, water-soluble lubricating fat, bleeding agent, polishing agent and face coat protective agent are used as and prepare raw material,
Costco Wholesale is low, not will produce the pernicious gases such as NOx, avoids causing environmental pollution, by the dispersant of addition, can promote object
Expect that even particulate dispersion in medium, forms the medicament of stable suspension, avoids the occurrence of sedimentation phenomenon, by the polishing fluid
Face coat protective agent is added, it can be when in use so that stainless steel surface generates passivation, prevents surface oxidation from generating one layer of ash
Color oxidation film ensures the brightness of stainless steel product itself, is suitble to be widely popularized.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Embodiment 1
A kind of brightening solution for stainless steel, raw material by weight percentage for example under：Solid lubrication fat 25%, deionized water
15%, dispersant 5%, water-soluble lubricating fat 35%, bleeding agent 5%, polishing agent 10% and face coat protective agent 5% are described
Solid lubrication fat is the grease-like semisolid of stiff, and the water-soluble lubricating fat is the liquid fat of colorless and odorless, the dispersion
Agent is organic dispersing agent, and the organic dispersing agent is triethyl group hexyl phosphoric acid, lauryl sodium sulfate, methyl anyl alcohol, cellulose
Any one in derivative, polyacrylamide, guar gum and fatty acid polyethylene glycol ester, the bleeding agent are sulphation castor
Appointing in sesame oil, sodium alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl sulfate sodium, sodium secondary alkyl sulfonate and secondary alkyl sulphate sodium
It anticipates two groups of mixtures, mixed proportion 1:1, the polishing agent is light yellow transparent liquid preparation, using abrasive micro-powder and distillation
Water is according to 1:5 ratios are made into, and abrasive material is stearic acid, triethanolamine and soap emulsion mixture, mixed proportion 1:1:1, abrasive material
The granularity of micro mist is 0.8um, and the face coat protective agent is alkyl sulfide alcohols protective agent, fatty acid protective agent and organosilicon
Any one protective agent in alkanes protective agent.
The present invention also provides a kind of preparation methods of brightening solution for stainless steel, include the following steps：
S1：Feeding, feeding, by solid lubrication fat, deionized water, dispersant, water-soluble lubricating fat, bleeding agent, polishing agent
It is weighed with face coat protective agent precentagewise example, it is spare；
S2：Mixed once dissolves, and the solid lubrication fat, deionized water and the dispersant that have been sampled in S1 are poured into reaction kettle
It is sufficiently stirred dissolving, mixing time 30min, 60 DEG C of reaction kettle heating temperature；
S3：It is complete to be put into stirring and dissolving in S2 by secondary mixed dissolution for the water-soluble lubricating fat and bleeding agent that are sampled in S1
At mixed liquor in, be stirred dissolving, mixing time 25min, 60 DEG C of reaction kettle heating temperature again；
S4：The polishing agent sampled in S1 and face coat protective agent are put into S3 and have been dissolved by mixed dissolution three times
At mixed liquor in dissolved, mixing time 30min, reaction kettle stop heating, obtain mixed liquor；
S5：The mixed liquor obtained in S4 is sampled and carries out physical and chemical index test by sample detection；
S6：The brightening solution for stainless steel of acquisition after detection is qualified, is carried out packaging and storage by packaging.
For the heated for controlling temperature mode that the reaction kettle uses for heating water bath temperature control, the volume of reaction kettle is not less than 100L, institute
The physical and chemical index test event in step S5 is stated to include density measurement, viscosity test, oiliness test, acid value test, pour point and coagulate
Point test, antirust test, emulsion resistance test, corrosion test, oxidation stability test, wear resistence test and penetration test.
Embodiment 2
A kind of brightening solution for stainless steel, raw material by weight percentage for example under：Solid lubrication fat 28%, deionized water
15%, dispersant 5%, water-soluble lubricating fat 35%, bleeding agent 5%, polishing agent 7% and face coat protective agent 5% are described solid
Body lubricating grease is the grease-like semisolid of stiff, and the water-soluble lubricating fat is the liquid fat of colorless and odorless, the dispersant
For organic dispersing agent, the organic dispersing agent is triethyl group hexyl phosphoric acid, lauryl sodium sulfate, methyl anyl alcohol, cellulose spread out
Any one in biology, polyacrylamide, guar gum and fatty acid polyethylene glycol ester, the bleeding agent are sulphation castor-oil plant
It is arbitrary in oil, sodium alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl sulfate sodium, sodium secondary alkyl sulfonate and secondary alkyl sulphate sodium
Two groups of mixtures, mixed proportion 1:1, the polishing agent is light yellow transparent liquid preparation, using abrasive micro-powder and distilled water
According to 1:5 ratios are made into, and abrasive material is stearic acid, triethanolamine and soap emulsion mixture, mixed proportion 1:1:1, abrasive material is micro-
The granularity of powder is 0.9um, and the face coat protective agent is alkyl sulfide alcohols protective agent, fatty acid protective agent and organosilan
Any one protective agent in class protective agent.
The present invention also provides a kind of preparation methods of brightening solution for stainless steel, include the following steps：
S1：Feeding, feeding, by solid lubrication fat, deionized water, dispersant, water-soluble lubricating fat, bleeding agent, polishing agent
It is weighed with face coat protective agent precentagewise example, it is spare；
S2：Mixed once dissolves, and the solid lubrication fat, deionized water and the dispersant that have been sampled in S1 are poured into reaction kettle
It is sufficiently stirred dissolving, mixing time 35min, 70 DEG C of reaction kettle heating temperature；
S3：It is complete to be put into stirring and dissolving in S2 by secondary mixed dissolution for the water-soluble lubricating fat and bleeding agent that are sampled in S1
At mixed liquor in, be stirred dissolving, mixing time 30min, 65 DEG C of reaction kettle heating temperature again；
S4：The polishing agent sampled in S1 and face coat protective agent are put into S3 and have been dissolved by mixed dissolution three times
At mixed liquor in dissolved, mixing time 35min, reaction kettle stop heating, obtain mixed liquor；
S5：The mixed liquor obtained in S4 is sampled and carries out physical and chemical index test by sample detection；
S6：The brightening solution for stainless steel of acquisition after detection is qualified, is carried out packaging and storage by packaging.
For the heated for controlling temperature mode that the reaction kettle uses for heating water bath temperature control, the volume of reaction kettle is not less than 100L, institute
The physical and chemical index test event in step S5 is stated to include density measurement, viscosity test, oiliness test, acid value test, pour point and coagulate
Point test, antirust test, emulsion resistance test, corrosion test, oxidation stability test, wear resistence test and penetration test.
Embodiment 3
A kind of brightening solution for stainless steel, raw material by weight percentage for example under：Solid lubrication fat 30%, deionized water
10%, dispersant 5%, water-soluble lubricating fat 35%, bleeding agent 5%, polishing agent 10% and face coat protective agent 5% are described
Solid lubrication fat is the grease-like semisolid of stiff, and the water-soluble lubricating fat is the liquid fat of colorless and odorless, the dispersion
Agent is organic dispersing agent, and the organic dispersing agent is triethyl group hexyl phosphoric acid, lauryl sodium sulfate, methyl anyl alcohol, cellulose
Any one in derivative, polyacrylamide, guar gum and fatty acid polyethylene glycol ester, the bleeding agent are sulphation castor
Appointing in sesame oil, sodium alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl sulfate sodium, sodium secondary alkyl sulfonate and secondary alkyl sulphate sodium
It anticipates two groups of mixtures, mixed proportion 1:1, the polishing agent is light yellow transparent liquid preparation, using abrasive micro-powder and distillation
Water is according to 1:5 ratios are made into, and abrasive material is stearic acid, triethanolamine and soap emulsion mixture, mixed proportion 1:1:1, abrasive material
The granularity of micro mist is 1um, and the face coat protective agent is alkyl sulfide alcohols protective agent, fatty acid protective agent and organosilan
Any one protective agent in class protective agent.
The present invention also provides a kind of preparation methods of brightening solution for stainless steel, include the following steps：
S1：Feeding, feeding, by solid lubrication fat, deionized water, dispersant, water-soluble lubricating fat, bleeding agent, polishing agent
It is weighed with face coat protective agent precentagewise example, it is spare；
S2：Mixed once dissolves, and the solid lubrication fat, deionized water and the dispersant that have been sampled in S1 are poured into reaction kettle
It is sufficiently stirred dissolving, mixing time 40min, 80 DEG C of reaction kettle heating temperature；
S3：It is complete to be put into stirring and dissolving in S2 by secondary mixed dissolution for the water-soluble lubricating fat and bleeding agent that are sampled in S1
At mixed liquor in, be stirred dissolving, mixing time 35min, 70 DEG C of reaction kettle heating temperature again；
S4：The polishing agent sampled in S1 and face coat protective agent are put into S3 and have been dissolved by mixed dissolution three times
At mixed liquor in dissolved, mixing time 40min, reaction kettle stop heating, obtain mixed liquor；
S5：The mixed liquor obtained in S4 is sampled and carries out physical and chemical index test by sample detection；
S6：The brightening solution for stainless steel of acquisition after detection is qualified, is carried out packaging and storage by packaging.
For the heated for controlling temperature mode that the reaction kettle uses for heating water bath temperature control, the volume of reaction kettle is not less than 100L, institute
The physical and chemical index test event in step S5 is stated to include density measurement, viscosity test, oiliness test, acid value test, pour point and coagulate
Point test, antirust test, emulsion resistance test, corrosion test, oxidation stability test, wear resistence test and penetration test.
The present invention strictly controls the brightening solution for stainless steel and preparation method thereof, by strictly controlling each of brightening solution for stainless steel
The percentage and preparation technology parameter of component, the solid lubrication fat of use, dispersant, water-soluble lubricating fat, ooze at deionized water
As raw material is prepared, Costco Wholesale is low, not will produce the pernicious gases such as NOx, avoids for saturating agent, polishing agent and face coat protective agent
Environmental pollution is caused, by the dispersant of addition, material particles can be promoted to be dispersed in medium, forms stable suspension
Medicament, avoid the occurrence of sedimentation phenomenon, by the polishing fluid be added face coat protective agent, can be when in use so that
Stainless steel surface generates passivation, prevents surface oxidation from generating one layer of gray oxide film, ensures the brightness of stainless steel product itself,
It is suitble to be widely popularized.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of brightening solution for stainless steel, it is characterised in that：Its raw material by weight percentage for example under：Solid lubrication fat 20-30%,
Deionized water 5-15%, dispersant 3-5%, water-soluble lubricating fat 30-35%, bleeding agent 3-5%, polishing agent 5-10% and surface
Coating protective agent 3-5%.
2. a kind of brightening solution for stainless steel according to claim 1, it is characterised in that：The solid lubrication fat is the oil of stiff
Smectic semisolid, the water-soluble lubricating fat are the liquid fat of colorless and odorless.
3. a kind of brightening solution for stainless steel according to claim 1, it is characterised in that：The dispersant is organic dispersing agent,
The organic dispersing agent is triethyl group hexyl phosphoric acid, lauryl sodium sulfate, methyl anyl alcohol, cellulose derivative, polyacrylamide
Any one in amine, guar gum and fatty acid polyethylene glycol ester.
4. a kind of brightening solution for stainless steel according to claim 1, it is characterised in that：The bleeding agent is sulphation castor-oil plant
It is arbitrary in oil, sodium alkyl sulfonate, sodium alkyl benzene sulfonate, alkyl sulfate sodium, sodium secondary alkyl sulfonate and secondary alkyl sulphate sodium
Two groups of mixtures, mixed proportion 1:1.
5. a kind of brightening solution for stainless steel according to claim 1, it is characterised in that：The polishing agent is pale yellow transparent liquid
Body preparation, using abrasive micro-powder and distilled water according to 1:5 ratios are made into, and abrasive material is that stearic acid, triethanolamine and soap emulsion are mixed
Close object, mixed proportion 1:1:1, the granularity of abrasive micro-powder is 0.8-1um.
6. a kind of brightening solution for stainless steel according to claim 1, it is characterised in that：The face coat protective agent is alkyl
Any one protective agent in thio-alcohol protective agent, fatty acid protective agent and organosilicon alkanes protective agent.
7. a kind of preparation method of brightening solution for stainless steel, it is characterised in that：Include the following steps：
S1：Feeding, by solid lubrication fat, deionized water, dispersant, water-soluble lubricating fat, bleeding agent, polishing agent and face coat
Protective agent precentagewise example weighs, spare；
S2：Mixed once dissolves, and the solid lubrication fat, deionized water and the dispersant that have been sampled in S1 are poured into reaction kettle fully
Stirring and dissolving, mixing time 30-40min, 60-80 DEG C of reaction kettle heating temperature；
S3：The water-soluble lubricating fat and bleeding agent that are sampled in S1 are put into what stirring and dissolving in S2 was completed by secondary mixed dissolution
In mixed liquor, it is stirred dissolving, mixing time 25-35min, 60-70 DEG C of reaction kettle heating temperature again；
S4：The polishing agent sampled in S1 and face coat protective agent are put into what dissolving in S3 was completed by mixed dissolution three times
It is dissolved in mixed liquor, mixing time 30-40min, reaction kettle stops heating, obtains mixed liquor；
S5：The mixed liquor obtained in S4 is sampled and carries out physical and chemical index test by sample detection；
S6：The brightening solution for stainless steel of acquisition after detection is qualified, is carried out packaging and storage by packaging.
8. a kind of preparation method of brightening solution for stainless steel according to claim 7, it is characterised in that：The reaction kettle uses
Heated for controlling temperature mode be heating water bath temperature control, the volume of reaction kettle is not less than 100L.
9. a kind of preparation method of brightening solution for stainless steel according to claim 7, it is characterised in that：In the step S5
Physical and chemical index test event includes that density measurement, viscosity test, oiliness test, acid value test, pour point and condensation point test, antirust are surveyed
Examination, emulsion resistance test, corrosion test, oxidation stability test, wear resistence test and penetration test.
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| CN201810530931.0A CN108505047A (en) | 2018-05-29 | 2018-05-29 | A kind of brightening solution for stainless steel and preparation method thereof |
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| CN201810530931.0A CN108505047A (en) | 2018-05-29 | 2018-05-29 | A kind of brightening solution for stainless steel and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115820129A (en) * | 2022-12-28 | 2023-03-21 | 东莞市四辉表面处理科技有限公司 | Environment-friendly polishing solution for rolling grinding |
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| CN102585706A (en) * | 2012-01-09 | 2012-07-18 | 清华大学 | Acidic chemical and mechanical polishing composition |
| CN103013345A (en) * | 2012-12-21 | 2013-04-03 | 清华大学 | Oily diamond grinding liquid and preparation method thereof |
| CN104842245A (en) * | 2015-04-12 | 2015-08-19 | 哈尔滨理工大学 | Phase-change material chemical-mechanical polishing method and device |
| CN107419246A (en) * | 2017-06-30 | 2017-12-01 | 浙江省平湖铰链有限公司 | One kind improves environment-friendly type hinge basic unit composite film coating technique |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585706A (en) * | 2012-01-09 | 2012-07-18 | 清华大学 | Acidic chemical and mechanical polishing composition |
| CN103013345A (en) * | 2012-12-21 | 2013-04-03 | 清华大学 | Oily diamond grinding liquid and preparation method thereof |
| CN104842245A (en) * | 2015-04-12 | 2015-08-19 | 哈尔滨理工大学 | Phase-change material chemical-mechanical polishing method and device |
| CN107419246A (en) * | 2017-06-30 | 2017-12-01 | 浙江省平湖铰链有限公司 | One kind improves environment-friendly type hinge basic unit composite film coating technique |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115820129A (en) * | 2022-12-28 | 2023-03-21 | 东莞市四辉表面处理科技有限公司 | Environment-friendly polishing solution for rolling grinding |
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