CN1328359C - Method for reducing friction coefficient of graphite lubricant - Google Patents
Method for reducing friction coefficient of graphite lubricant Download PDFInfo
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- CN1328359C CN1328359C CNB200310106999XA CN200310106999A CN1328359C CN 1328359 C CN1328359 C CN 1328359C CN B200310106999X A CNB200310106999X A CN B200310106999XA CN 200310106999 A CN200310106999 A CN 200310106999A CN 1328359 C CN1328359 C CN 1328359C
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- graphite
- lubricant
- oildag
- friction coefficient
- oxidation inhibitor
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Abstract
The present invention relates to a graphite lubricant, particularly to a method for reducing the friction coefficient of a graphite lubricant in rolled seamless tubes. The graphite lubricant used by the rolling seamless tubes(floating arrangement/arrangement with box /clamped core rod rolling technology) takes graphite as a main lubricating material. The quality of the graphite lubricant is directly influenced by the properties of the graphite lubrication. Graphite is not researched and selected in the prior art, and accordingly, the friction coefficient of the existing graphite lubricant is high. The crystal structure of the graphite is researched by the X-ray diffraction technology. Natural flake graphite with lower crystal structure piece layers, high carbon content and high particle size mesh numbers are selected as the graphite of the lubricant. An antioxidant is added to prevent the oxidation of graphite at high temperature, and accordingly, the friction coefficient of the graphite lubricant is reduced. The lubrification of the graphite lubricant is increased, and the abrasion of the core rod is reduced.
Description
Technical field
The present invention relates to a kind of oildag, particularly relate to the method that is used for reducing roll seamless steel tube oildag frictional coefficient.
Background technology
Used oildag in roll seamless steel tube (float/case put/clamping mandrel rolling technology), graphite wherein is main lubricant, the quality of graphite lubrication performance directly affects the quality of oildag, the lubricity of oildag good (frictional coefficient is low), can reduce the wearing and tearing of plug widely, prolong the work-ing life of plug.Thereby improve the quality of weldless steel tube greatly.In the prior art, do not study in earnest and select for graphite.Therefore, existing oildag frictional coefficient is than higher.
Summary of the invention
We have studied a kind of method that reduces the oildag frictional coefficient: be exactly with X-ray diffractive technology research the crystal structure of graphite, selection X-ray diffracted intensity is low, and (crystalline structure is low along the C axle degree of order, we can say that also the crystalline structure sheet number of plies is low), carbon content is higher, granularity order number is high slightly natural flake graphite is as the graphite of lubricant, and adding oxidation inhibitor stops the oxidation of graphite under the high temperature, thereby reduced the frictional coefficient of oildag greatly, improve the lubricity of oildag, reduced the wearing and tearing of plug.
Technical scheme of the present invention: the graphite that uses in oildag is the natural flake graphite that filters out with the X-ray diffractive technology, carbon content itself is 98%, granularity 98% is by 400 orders, and the content of graphitic composition is between 75%～88% in lubricant; The oxidation inhibitor that uses in the oildag, its addition are 0.3%～0.5%, oxidation inhibitor be 2,6 di tert butyl 4 methyl phenol (antioxidant 264), 4,4 '-a kind of in methylene bis (2, the 6-di-t-butyl) phenol (oxidation inhibitor 4426).
Actual effect of the present invention is: reduced the frictional coefficient of oildag greatly, improved the lubricity of oildag, reduced the wearing and tearing of plug, thereby improved the work-ing life of plug and the quality of wroughtsteel pipe.Because novel graphite lubricant configuration colloidal solid part is little, one ton of solid lubricant of other oildag can only dispose 3 xanthan body lubricants.And the configurable 4 xanthan body lubricants of one ton of solid lubricant of patent of the present invention can also guarantee good lubricating property.So just greatly reduce raw-material cost.In-plant supplier can supply the liquid graphite lubricant, thereby can simplify the production technique of seamless steel tubing mill, reduces manpower.Therefore, use this novel graphite lubricant can improve the economic benefit and the social benefit of seamless steel tubing mill greatly.
Description of drawings
No accompanying drawing
Embodiment
Use graphite and oxidation inhibitor in oildag: graphite is the natural flake graphite that filters out with the X-ray diffractive technology, the carbon content of itself 98%, granularity 98% passes through 400 orders, the content of graphitic composition is between 75%～88% in lubricant; The addition of oxidation inhibitor is 0.3%～0.5% in lubricant.
Oxidation inhibitor be 2,6 di tert butyl 4 methyl phenol (antioxidant 264), 4,4 '-a kind of in methylene bis (2, the 6-di-t-butyl) phenol (oxidation inhibitor 4426).
We have studied the crystalline structure of multiple natural flake graphite with the X-ray diffractive technology, natural flake graphite for 90% above carbon content, result of study is found: the X-ray diffracted intensity of graphite is lower, and (crystalline structure is lower along the C axle degree of order, we can say that also the crystalline structure sheet number of plies is lower), its lubricity is (frictional coefficient that records is just little) just better.We have chosen that a kind of carbon content is higher with this method, granularity 98% is by the primary lubricant material of 400 purpose natural flake graphites as oildag; Adding oxidation inhibitor, to stop the oxidation of graphite under the high temperature; With the oildag of such material configuration, just can find out through the data of Tsing-Hua University country tribology experiments chamber and University Of Tianjin's Materials Academy metallic substance lab investigation frictional coefficient:
1. we are with preferred graphite with add frictional coefficient that the oildag sample of oxidation inhibitor production records and all be significantly less than domestic and international oildag manufacturer, the frictional coefficient that records as the oildag sample of Switzerland Long Sha company, field, Tianjin, Tianjin novel material company, Qidong, Shanghai novel material company of Sunyu.
(1) country of Tsing-Hua University tribology experiments chamber testing data (test temperature: 200 ℃; Load: 100LBS; Rotating speed: 600rpm):
| Sample unit | Average torque (LB/in) | Test period | The frictional coefficient average |
| The husky sample of Switzerland dragon | 18.0 | 1 minute 15 seconds (all losing efficacy) | 0.198 |
| Field, Tianjin, Tianjin sample | 15.5 | 2 minutes (all losing efficacy) | 0.171 |
| English grinds scientific and technological solid sample | 5.0 | 2 minutes (the artificial termination) | 0.055 |
| English grinds scientific and technological liquid sample | 5.0 | 2 minutes 50 seconds (the artificial termination) | 0.055 |
(2) University Of Tianjin's Materials Academy metallic substance test data in lab (temperature: room temperature; Load: 3KG; Rotating speed: 400rpm):
| Sample unit | Date of test | Average torque (KG.cm) | Test period | The frictional coefficient average |
| Qidong, Shanghai Sunyu sample | 01.11.14 | 1.8 | 1 ' 30 " (the artificial termination) | 0.268 |
| English grinds scientific and technological sample | 01.1 1.14 | 1.75 | 1 ' 30 " (the artificial termination) | 0.261 |
| Field, Tianjin, Tianjin sample | 02.01.30 | 1.88 | 1 ' 30 " (the artificial termination) | 0.264 |
| English grinds scientific and technological sample | 02.01.30 | 1.71 | 1 ' 30 " (the artificial termination) | 0.241 |
(3) University Of Tianjin's Materials Academy metallic substance test data in lab (temperature: room temperature; Load: 15KG; Rotating speed: 400rpm):
| Sample unit | Average torque (KG.cm) | Test period | The frictional coefficient average |
| Switzerland's dragon husky sample (dry grinding) | 4.43 | 45 seconds | 0.151 |
| English grinds scientific and technological sample (dry grinding) | 4.32 | 45 seconds | 0.148 |
| Switzerland's dragon husky sample (wet-milling) | 4.93 | 15 seconds | 0.179 |
| English grinds scientific and technological sample (wet-milling) | 4.84 | 15 seconds | 0.165 |
2. we (select graphite with the X-ray diffractive technology with different graphite, and interpolation oxidation inhibitor is referred to as preferred graphite and selects graphite without this method, do not add oxidation inhibitor and be referred to as the non-graphite that selects) oildag of same formulated, the difference of the frictional coefficient that records: adopt frictional coefficient that the oildag of preferred graphite preparation records far below the frictional coefficient of selecting the oildag of graphite preparation without this method.Can find out from following test data:
Country of Tsing-Hua University tribology experiments chamber testing data (test temperature: 200 ℃; Load: 100LBS; Rotating speed: 600rpm):
| Sample unit | Average torque (LB/in) | Test period | The frictional coefficient average |
| English grinds the non-graphite that selects of science and technology | 18.0 | 50 seconds (out-of-service time) | 0.204 |
| English grinds the preferred graphite of science and technology | 5.0 | 2 minutes (the artificial termination) | 0.055 |
| English grinds the preferred graphite of science and technology | 5.0 | 2 minutes 50 seconds (the artificial termination) | 0.055 |
Embodiment 1
Preferred graphite 1:
Graphite with the selection of X-ray diffractive technology: 77.5%;
Oxidation inhibitor (4426): 0.35%.
Embodiment 2
(preferred graphite 2):
Graphite with the selection of X-ray diffractive technology: 79.5%;
Oxidation inhibitor (264): 0.4%.
Embodiment 3
(preferred graphite 3):
Graphite with the selection of X-ray diffractive technology: 84.0%;
Oxidation inhibitor (264): 0.5%.
Claims (2)
1. method that reduces the oildag frictional coefficient, in lubricant, use graphite and oxidation inhibitor, it is characterized in that: graphite is the natural flake graphite that filters out with the X-ray diffractive technology, select the X-ray diffracted intensity low, it is the natural flake graphite that crystal structure of graphite is low along the C axle degree of order or the crystalline structure sheet number of plies is low, the carbon content of selected graphite itself is 98%, granularity 98% is by 400 orders, the weight percentage of graphitic composition is between 75～88% in lubricant, and the weight percentage of oxidation inhibitor is 0.3～0.5%.
2. the method for reduction oildag frictional coefficient according to claim 1 is characterized in that: oxidation inhibitor is 2,6 di tert butyl 4 methyl phenol and 4, a kind of in 4 '-methylene bis (2, the 6-di-t-butyl) phenol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310106999XA CN1328359C (en) | 2003-11-11 | 2003-11-11 | Method for reducing friction coefficient of graphite lubricant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310106999XA CN1328359C (en) | 2003-11-11 | 2003-11-11 | Method for reducing friction coefficient of graphite lubricant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1544590A CN1544590A (en) | 2004-11-10 |
| CN1328359C true CN1328359C (en) | 2007-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200310106999XA Expired - Fee Related CN1328359C (en) | 2003-11-11 | 2003-11-11 | Method for reducing friction coefficient of graphite lubricant |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO81764A2 (en) * | 1981-02-26 | 1983-06-01 | Combinatul Petrochimic,Ro | LUBRICANT FOR HOT THREADING OF STAINLESS STEEL |
| CN1007430B (en) * | 1986-12-12 | 1990-04-04 | 上海市胶体化工厂 | Dry powder type high-temp. lubricant used for metal processing |
| CN1037189C (en) * | 1994-01-06 | 1998-01-28 | 王学绍 | Method for preparation of lubricant additive |
| RU2106371C1 (en) * | 1995-10-30 | 1998-03-10 | Товарищество с ограниченной ответственностью Компания "СЛАН" | Composition for antifriction material |
| CN1405286A (en) * | 2001-08-13 | 2003-03-26 | 衡阳市高新技术金化实业有限责任公司 | Water-based graphite core rod lubricant |
| CN1431284A (en) * | 2002-01-10 | 2003-07-23 | 中国石油化工股份有限公司 | Lubricating grease for wheels of airplanes and its preparing method |
-
2003
- 2003-11-11 CN CNB200310106999XA patent/CN1328359C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO81764A2 (en) * | 1981-02-26 | 1983-06-01 | Combinatul Petrochimic,Ro | LUBRICANT FOR HOT THREADING OF STAINLESS STEEL |
| CN1007430B (en) * | 1986-12-12 | 1990-04-04 | 上海市胶体化工厂 | Dry powder type high-temp. lubricant used for metal processing |
| CN1037189C (en) * | 1994-01-06 | 1998-01-28 | 王学绍 | Method for preparation of lubricant additive |
| RU2106371C1 (en) * | 1995-10-30 | 1998-03-10 | Товарищество с ограниченной ответственностью Компания "СЛАН" | Composition for antifriction material |
| CN1405286A (en) * | 2001-08-13 | 2003-03-26 | 衡阳市高新技术金化实业有限责任公司 | Water-based graphite core rod lubricant |
| CN1431284A (en) * | 2002-01-10 | 2003-07-23 | 中国石油化工股份有限公司 | Lubricating grease for wheels of airplanes and its preparing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1544590A (en) | 2004-11-10 |
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Owner name: TIANJIN CITY YINGYAN TECHNOLOGY DEVELOPMENT CO., Free format text: FORMER OWNER: GAO YINGMIN Effective date: 20070202 |
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Effective date of registration: 20070202 Address after: 300384 Tianjin Huayuan new technology industrial park Xinmao science and Technology Park AB block three layer C 307 E unit Applicant after: Gao Yingmin Address before: 300071 Tianjin City No. 94 Weijin Road southwest of the village of 54-2-403 in Nankai University Applicant before: Gao Yingmin |
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