CN1876782A - Emulsified liquid for single phase brass hot rolling and preparation method thereof - Google Patents
Emulsified liquid for single phase brass hot rolling and preparation method thereof Download PDFInfo
- Publication number
- CN1876782A CN1876782A CN 200610088184 CN200610088184A CN1876782A CN 1876782 A CN1876782 A CN 1876782A CN 200610088184 CN200610088184 CN 200610088184 CN 200610088184 A CN200610088184 A CN 200610088184A CN 1876782 A CN1876782 A CN 1876782A
- Authority
- CN
- China
- Prior art keywords
- emulsion
- agent
- mother liquor
- hot rolling
- rust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Lubricants (AREA)
Abstract
The invention relates the yellow metal hot-rolled oil water emulsion and preparing method. The mother liquid of emulsion is composed by base oil, emulsifying agent, emulsion stability, oil agent, antirusting agent, corrosion inhibitor and defoaming agent. The method comprises the following steps: diluting mother liquid, adding polymeric additive, stirring, and getting the emulsion. The emulsion has the advantages of good rolling accuracy, modifying quality and improving productivity.
Description
Technical field:
The present invention relates to a kind of water base lubricant, particularly emulsified liquid for single phase brass hot rolling and preparation method thereof.
Background of invention:
The rolling plastic working category that belongs to of copper and copper alloy, do not need lubricant that too high extreme pressure property is arranged in the operation of rolling, but it is higher to wear-resistant performance requriements, because very good lubricant effect can make when rolling the roll difficulty of nipping, thereby prevents that roll and sheet material agglutinating barrier property from seeming more effective than antifriction performance.Copper processing is higher to surperficial specification of quality, so the copper lubricant must satisfy the requirement of surface quality, also should satisfy the certain operations requirement in addition, as have no irritating odor etc.Domestic to non-ferrous metal processing and Study on Lubrication seldom, gratifying lubricant seldom, applicable water base lubricant is still less.At present, domestic part copper processing enterprise uses emulsion during to the brass hot rolling of zinc content 〉=32% (wt).But single-phase (α phase) brass to zinc content≤32% (wt), because its hardness is big than market brass, deformation force is big, more difficult more rolling than market brass, at present many producers adopt the mode of the lubricated roll of artificial coating butter, cause the copper strips product surface quality relatively poor, surface residue is more, and exist energy consumption big, easily produce oil smoke during use, problem such as workman's work situation is abominable.Adopt during hot rolling single-phase (α phase) brass the water-based emulsion liquid system lubricated yet there are no report.
Summary of the invention:
The present invention is for avoiding above-mentioned existing in prior technology problem, providing a kind of emulsified liquid for single phase brass hot rolling to satisfy the requirement of hard attitude brass hot rolled; The present invention provides the preparation method of described emulsified liquid for single phase brass hot rolling simultaneously.
The technical scheme that technical solution problem of the present invention is adopted is:
Emulsified liquid for single phase brass hot rolling is characterized in that emulsion mother liquor constituting by weight percentage:
N15 or N10 machinery oil 10～80%, emulsifying agent 0.5～45%, emulsion stabilizer 0～5%,
Extreme pressure agent 0.5～15%, oiliness improver 0.5～15%, rust-preventive agent 0.5～16%,
Corrosion inhibitor 0～5%, defoamer 0～5%, water surplus;
Described emulsion constituting by weight percentage:
Emulsion mother liquor 0.1～10%, polymeric additive 0.01～6%, water surplus.
The characteristics of emulsion of the present invention also are:
Described emulsifying agent is a triethanolamine oleate, or constituting by weight percentage: triethanolamine oleate: 8～99.9%, department this 80 be 0.1～92%.
Described emulsion stabilizer is ethanol or propyl carbinol.
Described extreme pressure agent is a di-n-butyl phosphite.
Described oiliness improver is the Fatty Alcohol(C12-C14 and C12-C18) of carbon atom 12～18.
Described rust-preventive agent is alkaline nonylnaphthalene sulfonates.
Described corrosion inhibitor is 2,6 ditertbutylparacresols.
Described polymeric additive is a polyvinyl alcohol.
Emulsion preparation method's of the present invention feature is:
At first oleic acid and trolamine were added in the reactor of belt stirrer in 1: 1 in molar ratio, slowly be heated to 50 ℃, reacted 1 hour, make triethanolamine oleate; To be by weight percentage then: N15 or N10 machinery oil 10～80%, extreme pressure agent 0.5～15%, oiliness improver 0.5～15%, rust-preventive agent 0.5～16%, corrosion inhibitor 0～5%, defoamer 0～5% join in the reactor of belt stirrer, slowly be heated to 50 ℃, the even back of mixing of materials adds emulsifying agent 0.5～45%, emulsion stabilizer 0～5%, excess water in the question response still, stirs insulation and gets the emulsion mother liquor in 1.5 hours;
Then by the emulsion mother liquor be 0.1～10%, polymeric additive is that 0.01～6% weight ratio is diluted in water, stirring promptly gets emulsified liquid for single phase brass hot rolling.
Defoamer of the present invention is commercially available defoamer.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, emulsion of the present invention improves the surface quality of rolled products, has eliminated impurity such as surperficial black silk, carbide, and strip surface is more bright and clean;
2, emulsion of the present invention has good abrasion resistance and antifriction performance, has reduced roll consumption, has prolonged the roll change cycle;
3, emulsion of the present invention can fully cool off roll owing to adopt the water based lubrication system, helps to control roll forming, and has reduced the made-up belt tolerance of rolled products and middle poor.
4, use of the present invention can be raised labour efficiency greatly, reduces labor strength.
In order to estimate the performance of emulsified liquid for single phase brass hot rolling, carry out following experiment:
1, the emulsion of 1% concentration is packed in the 100mL tool plug graduated cylinder, put into thermostatic drying chamber, 90 ℃ of thermostabilitys of investigating emulsions down.
2, in 35 ℃ of following moisture eliminators, use the one-level grey cast iron that emulsion is carried out the rust-preventing characteristic test.
3, the emulsion to 1% concentration carries out oil film strength and long term wear test on MQ-800 type four ball experimental machine, estimates the friction and wear behavior of lubricating oil.
The emulsion stability test:
Carry out the storage stability test by GB6144-85, the result shows that the emulsion of development is qualified.
For satisfying the hot rolling technology condition, prepare the emulsion of 1% concentration, pack in the 100mL tool plug graduated cylinder, put into thermostatic drying chamber, place a few days down at 90 ℃, investigate the thermostability of emulsion.Test-results shows that this emulsion was placed three down at 90 ℃, does not have oily graining out to go out, and placing a week has small amounts of soap to separate out later, and every performance index of emulsion see Table 1
Every performance index of table 1 emulsion
| Project | Performance | Test method | |
| Mother liquor outward appearance (15～35 ℃) | The transparent oil body of reddish-brown | Range estimation | |
| Emulsion pH value | 8.40 | GB6144-85 | |
| The emulsion storage stability | Do not have oily graining out and go out, not stratified | GB6144-85 | |
| The rust-preventing characteristic test, h | Monolithic | ＞48 | GB6144-85 |
| Lamination | ＞8 | ||
| Last non seizure load P BValue, N | 744.8 | GB3142-82 | |
| Wear scar diameter (392N, 30min), mm | 0.690 | GB6144-85 | |
| Antifoam performance | Qualified | GB6144-85 | |
Evidence, every performance index of this emulsion all meet the requirement of GB6144-85 and GB3142-82.
The test of emulsion rust-preventing characteristic:
Carry out the rust-preventing characteristic test by GB6144-85, test-results sees Table 2.
The experiment of table 2 emulsion rust-preventing characteristic
| Concentration of emulsion used | Performance, h | Experimental technique | |
| 1.0％ | Monolithic | ＞48 | GB6144-85 |
| 0.75％ | Monolithic | ＞40 | |
| 0.5％ | Monolithic | ＞24 | |
| 1.0％ | Lamination | ＞8 | |
Evidence, the rust-proof effect of this emulsion is better, and monolithic is all qualified under above-mentioned concentration, and lamination is qualified when concentration 1.0%.
Corrosion test: test-results shows that the emulsion of development has reached requirement.The results are shown in Table 3
Table 3 corrosion test
| Test piece | Performance, h | Experimental technique |
| Steel disc | 24 | GB6144-85 |
| Copper sheet | 6 | |
| Aluminium flake | 4 |
Test-results proves that this emulsion has certain corrosion resistance nature.
Friction-wear test:
Prepare the emulsion of 1% concentration by GB3142-82,, the results are shown in Figure 1 in its oil film strength of MQ-800 type four balls experiment aircraft measurements.Is to carry out the long mill test of 30min under the 1450r/min condition at load for 396N, rotating speed, estimates the abrasion resistance of lubricating oil, and friction reducing effect is seen Fig. 1, and mill class diameter is 0.745mm.Test-results proves that this emulsion has certain antifriction and abrasion resistance.
H68 brass hot rolling test in place:
The on-the-spot technology emulsion ratio of the new hot rolling of H68 alpha brass is: emulsion mother liquor 0.1～10%, and polymeric additive 0.01～6%, surplus is a tap water.The characteristics of novel process are:
(1) surface quality of rolled products is better, no burr, black silk, and strip surface is brighter;
(2) protection of water-based lubricating liquid breaker roll is better, has reduced middle grinding roller number of times, and has prolonged the roll change cycle;
(3) help controlling roll forming, reduced zone face tolerance and middle poor, make former recessed rolling system into flat rolling;
(4) reduce the time that single workpiece is rolled into finished product, reduced the roll change number of times, improved production efficiency greatly;
(5) water base fluid does not produce oil smoke, thereby has improved the worker laboring environment.
Description of drawings:
Accompanying drawing is the long mill test antifriction effect curve of emulsion of the present invention in hard attitude brass hot rolling.
Below the invention will be further described by embodiment:
Emulsion mother liquor constituting by weight percentage:
N15 or N10 machinery oil 10～80%, emulsifying agent 0.5～45%, emulsion stabilizer 0～5%,
Extreme pressure agent 0.5～15%, oiliness improver 0.5～15%, rust-preventive agent 0.5～16%,
Corrosion inhibitor 0～5%, defoamer 0～5%, water surplus;
In this span, press its weight percent assembly such as following table arbitrarily:
| Group | Machinery oil | Emulsifying agent | Emulsion stabilizer | Extreme pressure agent | Oiliness improver | Rust-preventive agent | Corrosion inhibitor | Defoamer | Water |
| 1 | 10 | 45 | 5 | 15 | 4 | 6 | 4.5 | 5 | Surplus |
| 2 | 20 | 35 | 3 | 8 | 10 | 14 | 3 | 4.5 | Surplus |
| 3 | 25 | 30 | 3.5 | 3.5 | 8 | 16 | 0 | 4 | Surplus |
| 4 | 30 | 5 | 0 | 5 | 12 | 8 | 0.5 | 1.5 | Surplus |
| 5 | 35 | 20 | 2.5 | 2 | 15 | 12 | 1.5 | 3.5 | Surplus |
| 6 | 40 | 15 | 2 | 1 | 6 | 10 | 3.5 | 3 | Surplus |
| 7 | 50 | 10 | 4.5 | 10 | 2 | 3 | 2.5 | 2.5 | Surplus |
| 8 | 80 | 0.5 | 0 | 0.5 | 0.5 | 0.5 | 5 | 0 | Surplus |
Annotate: when the emulsifying agent large usage quantity, can not add emulsion stabilizer; When the rust-preventive agent large usage quantity, can not add corrosion inhibitor; When the emulsifying agent consumption hour, can not add defoamer.
Emulsion constituting by weight percentage:
Emulsion mother liquor 0.1～10%, polymeric additive 0.01～6%, water surplus.
In this span, press its weight percent assembly such as following table arbitrarily:
| Group | The emulsion mother liquor | Polymeric additive | Water |
| 1 | 0.1 | 6 | Surplus |
| 2 | 10 | 0.01 | Surplus |
| 3 | 5 | 3 | Surplus |
In concrete the enforcement, emulsifying agent can be a triethanolamine oleate, or constituting by weight percentage:
Triethanolamine oleate: 8～99.9%, department's basis 80 0.1～92%
In this span, press its weight percent assembly such as following table arbitrarily:
| Group | Triethanolamine oleate | Department's basis 80 |
| 1 | 8 | 92 |
| 2 | 99.9 | 0.1 |
| 3 | 50 | 50 |
Emulsion stabilizer is that ethanol or propyl carbinol, extreme pressure agent are that di-n-butyl phosphite, oiliness improver are that Fatty Alcohol(C12-C14 and C12-C18), the rust-preventive agent of carbon atom 12～18 is that alkaline nonylnaphthalene sulfonates, corrosion inhibitor are that 2,6 ditertbutylparacresols, polymeric additive are polyvinyl alcohol in concrete the enforcement.
Preparation process: at first oleic acid and trolamine were added in the reactor of belt stirrer in 1: 1 in molar ratio, slowly be heated to 50 ℃, reacted 1 hour, make triethanolamine oleate; To be by weight percentage then: N15 or N10 machinery oil 10～80%, extreme pressure agent 0.5～15%, oiliness improver 0.5～15%, rust-preventive agent 0.5～16%, corrosion inhibitor 0～5%, defoamer 0～5% join in the reactor of belt stirrer, slowly be heated to 50 ℃, the even back of mixing of materials adds emulsifying agent 0.5～45%, emulsion stabilizer 0～5%, excess water in the question response still, stirs insulation and gets the emulsion mother liquor in 1.5 hours.
Then by the emulsion mother liquor be 0.1～10%, polymeric additive is that 0.01～6% weight ratio is diluted in water, stirring promptly gets emulsified liquid for single phase brass hot rolling.
Embodiment 1: the emulsion mother liquor is pressed column weight amount per-cent and is formed:
| Triethanolamine oleate | 5.0％ |
| Department's basis 80 | 0.4％ |
| Di-n-butyl phosphite | 3.0％ |
| Dinonyl naphthalene sulfonate barium | 16％ |
| Lauryl alcohol | 0.5％ |
| Ethanol | 0.4％ |
| 2,6 ditertiary butyl p cresol | 0.2％ |
| Defoamer | 0.2％ |
| The N10 machinery oil | 14％ |
| Water | Surplus |
The emulsion mother liquor is got 1 part of emulsion mother liquor after preparing by last table content, is diluted to concentration expressed in percentage by weight 0.1% with tap water, adds 1 part of polyvinyl alcohol then in diluent, stirs evenly and promptly gets emulsion.
Embodiment 2: the emulsion mother liquor is pressed column weight amount per-cent and is formed:
| Triethanolamine oleate | 15％ |
| Department's basis 80 | 0.5％ |
| Di-n-butyl phosphite | 5.0％ |
| Dinonyl naphthalene sulfonate barium | 10％ |
| Stearyl alcohol | 2.0％ |
| Propyl carbinol | 0.8％ |
| 2,6 ditertiary butyl p cresol | 0.2％ |
| Defoamer | 0.2％ |
| The N15 machinery oil | 30％ |
| Water | Surplus |
The emulsion mother liquor is got 10 parts of emulsion mother liquors after preparing by last table content, is diluted to concentration expressed in percentage by weight 10% with tap water, adds 6 parts of polyvinyl alcohol then in diluent, stirs evenly and promptly gets emulsion.
Embodiment 3: the emulsion mother liquor is pressed column weight amount per-cent and is formed:
| Triethanolamine oleate | 18％ |
| Department's basis 80 | 2.0％ |
| Di-n-butyl phosphite | 10％ |
| Dinonyl naphthalene sulfonate barium | 5.0％ |
| Stearyl alcohol | 4.0％ |
| Propyl carbinol | 0.2％ |
| 2,6 ditertiary butyl p cresol | 0.2％ |
| Defoamer | 0.2％ |
| The N15 machinery oil | 20％ |
| Water | Surplus |
The emulsion mother liquor is got 5 parts of emulsion mother liquors after preparing by last table content, is diluted to concentration expressed in percentage by weight 5% with tap water, adds 3 parts of polyvinyl alcohol then in diluent, stirs evenly and promptly gets emulsion.
Claims (9)
1, a kind of emulsified liquid for single phase brass hot rolling is characterized in that emulsion mother liquor constituting by weight percentage:
N15 or N10 machinery oil 10～80%, emulsifying agent 0.5～45%, emulsion stabilizer 0～5%,
Extreme pressure agent 0.5～15%, oiliness improver 0.5～15%, rust-preventive agent 0.5～16%,
Corrosion inhibitor 0～5%, defoamer 0～5%, water surplus;
Described emulsion constituting by weight percentage:
Emulsion mother liquor 0.1～10%, polymeric additive 0.01～6%, water surplus.
2, emulsion as claimed in claim 1 is characterized in that described emulsifying agent is a triethanolamine oleate, or constituting by weight percentage: triethanolamine oleate: 8～99.9%, department this 80 0.1～92%.
3, emulsion as claimed in claim 1 is characterized in that described emulsion stabilizer is ethanol or propyl carbinol.
4, emulsion as claimed in claim 1 is characterized in that described extreme pressure agent is a di-n-butyl phosphite.
5, emulsion as claimed in claim 1 is characterized in that described oiliness improver is the Fatty Alcohol(C12-C14 and C12-C18) of carbon atom 12～18.
6, emulsion as claimed in claim 1 is characterized in that described rust-preventive agent is alkaline nonylnaphthalene sulfonates.
7, emulsion as claimed in claim 1 is characterized in that described corrosion inhibitor is 2,6 ditertbutylparacresols.
8, emulsion as claimed in claim 1 is characterized in that described polymeric additive is a polyvinyl alcohol.
9, the described preparation method of emulsion of a kind of claim 1 is characterized in that at first oleic acid and trolamine being added in the reactor of belt stirrer in 1: 1 in molar ratio, slowly is heated to 50 ℃, reacts 1 hour, makes triethanolamine oleate; To be by weight percentage then: N15 or N10 machinery oil 10～80%, extreme pressure agent 0.5～15%, oiliness improver 0.5～15%, rust-preventive agent 0.5～16%, corrosion inhibitor 0～5%, defoamer 0～5% join in the reactor of belt stirrer, slowly be heated to 50 ℃, the even back of mixing of materials adds emulsifying agent 0.5～45%, emulsion stabilizer 0～5%, excess water in the question response still, stirs insulation and gets the emulsion mother liquor in 1.5 hours;
Then by the emulsion mother liquor be 0.1～10%, polymeric additive is that 0.01～6% weight ratio is diluted in water, stirring promptly gets emulsified liquid for single phase brass hot rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100881847A CN100457876C (en) | 2006-06-30 | 2006-06-30 | Emulsified liquid for single phase brass hot rolling and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100881847A CN100457876C (en) | 2006-06-30 | 2006-06-30 | Emulsified liquid for single phase brass hot rolling and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1876782A true CN1876782A (en) | 2006-12-13 |
| CN100457876C CN100457876C (en) | 2009-02-04 |
Family
ID=37509342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100881847A Expired - Fee Related CN100457876C (en) | 2006-06-30 | 2006-06-30 | Emulsified liquid for single phase brass hot rolling and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100457876C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307270B (en) * | 2008-07-04 | 2011-02-16 | 北京科技大学 | Cold rolling emulsified oil for copper and copper alloy and method for manufacturing same |
| CN103450987A (en) * | 2013-08-26 | 2013-12-18 | 广西大学 | Aluminum and aluminum alloy hot-rolled non-ionic emulsion composition |
| CN103450985A (en) * | 2013-08-26 | 2013-12-18 | 广西大学 | Aluminum and aluminum alloy hot-rolled ionic emulsion composition |
| WO2024106521A1 (en) * | 2022-11-17 | 2024-05-23 | Ｅｎｅｏｓ株式会社 | Water-soluble processing oil stock composition and metalworking method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5583100A (en) * | 1993-10-08 | 1996-12-10 | Kabushiki Kaisha Kobe Seiko Sho | Oil compositions for hot rolling aluminum and aluminum alloys |
| CN1242033C (en) * | 2004-01-01 | 2006-02-15 | 彭美东 | Metal processing microemulsion |
| CN1309812C (en) * | 2004-07-06 | 2007-04-11 | 中国石油化工集团公司 | Lubricating oil composition and use thereof |
-
2006
- 2006-06-30 CN CNB2006100881847A patent/CN100457876C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307270B (en) * | 2008-07-04 | 2011-02-16 | 北京科技大学 | Cold rolling emulsified oil for copper and copper alloy and method for manufacturing same |
| CN103450987A (en) * | 2013-08-26 | 2013-12-18 | 广西大学 | Aluminum and aluminum alloy hot-rolled non-ionic emulsion composition |
| CN103450985A (en) * | 2013-08-26 | 2013-12-18 | 广西大学 | Aluminum and aluminum alloy hot-rolled ionic emulsion composition |
| CN103450985B (en) * | 2013-08-26 | 2015-03-11 | 广西大学 | Aluminum and aluminum alloy hot-rolled ionic emulsion composition |
| CN103450987B (en) * | 2013-08-26 | 2015-03-11 | 广西大学 | Aluminum and aluminum alloy hot-rolled non-ionic emulsion composition |
| WO2024106521A1 (en) * | 2022-11-17 | 2024-05-23 | Ｅｎｅｏｓ株式会社 | Water-soluble processing oil stock composition and metalworking method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100457876C (en) | 2009-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1061367C (en) | Aqueous lubricant for cold working of metal materials | |
| JP5224251B2 (en) | Lubricant composition for aqueous plastic processing of metallic materials | |
| CN104164283A (en) | Microemulsion metal cutting fluid | |
| CN101029268A (en) | Lubricating and cooling emulsified oil of copper-alloy fine drawing and its production | |
| CN104450120A (en) | Semi-synthetic metal wire drawing lubricant liquid and preparation method thereof | |
| CN101029271A (en) | Zinc-coated steel-plated punch drawing lube oil and its production | |
| CN101029272A (en) | Cold-rolling steel-plate punch drawing lube oil and its production | |
| CN1876782A (en) | Emulsified liquid for single phase brass hot rolling and preparation method thereof | |
| CN106590907A (en) | Graphene-containing metal cutting fluid and preparation method thereof | |
| CN1329124A (en) | water-based mud extreme pressure lubricant | |
| CN101029266B (en) | Drawing lube cooling oil of aluminum-coated red copper metal bar and its production | |
| CN109439419A (en) | A kind of superelevation greasy property cutting oil and preparation method thereof | |
| CN104818103B (en) | Cold extrusion forming lubricant for low-carbon steel parts for automobiles and preparation method thereof | |
| CN107629844A (en) | A kind of aluminum alloy plate materials water-soluble flush force feed | |
| CN1054892C (en) | Metal surface treatment chemical composition for cold working for formation of composite coatings and process for forming composite coatings | |
| CN102766500B (en) | High-base-number compound-sulfonic lithium/calcium composite lubricating grease and preparation method thereof | |
| CN105602674B (en) | Biodegradable Process of Emulsifying Oil For Rolling composition and purposes | |
| CN101948711B (en) | Water-soluble cutting fluid and preparation method thereof | |
| CN114752426B (en) | Composite calcium sulfonate-based lubricating grease and preparation method thereof | |
| CN105255561A (en) | Lubricating grease dedicated to blender mixer and preparation method of lubricating grease | |
| CN104450074A (en) | Stainless steel hot-forging lubricant composition | |
| CN108456585B (en) | Steel pipe drawing reaction oil composition | |
| CN104212534B (en) | A kind of multi-functional extreme-pressure lubricant and preparation method thereof | |
| CN102952616A (en) | High temperature high speed oil film bearing oil | |
| CN114752429A (en) | Heavy-load high-temperature water-resistant roller bearing lubricating grease and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 |