CN1247892A - High-temperature antioxidant lubricating coating - Google Patents
High-temperature antioxidant lubricating coating Download PDFInfo
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- CN1247892A CN1247892A CN 99121023 CN99121023A CN1247892A CN 1247892 A CN1247892 A CN 1247892A CN 99121023 CN99121023 CN 99121023 CN 99121023 A CN99121023 A CN 99121023A CN 1247892 A CN1247892 A CN 1247892A
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Abstract
The high-temperature antioxidant lubricating coating has Ni60A alloy matrix and CaF2, BaF2, B2O3 and WC as high temperature lubricant, and is applied onto the Ni/Al bottom layer of parts through flame spray of powder. The coating has high mechanical strength, antioxidant capacity and low friction-wear in conditions of temperature not higher than 800 deg.c and atomospheric pressure. The high temperature lubricating coating may be used in mechanical friction pair in metallurgical, petrochemical and other high temperature technology fields to protect frictional surface, reduce friction and abrasion, prevent surface jamming and ensure the normal operation of friction parts at high temperature.
Description
The present invention relates to a kind of high-temperature antioxidant lubricating coating and preparation method thereof.
A lot of equipments of industrial product move under very harsh hot conditions, the kiln during for example non-ferrous metal and smelting iron and steel, petrochemical complex, building materials are produced, train, motor car engine piston, cylinder sleeve etc.Because material property does not pass a test, the heavy wear of friction means and oxidation under the high temperature, and starting material that cause thus and energy loss have become one of important factor of influence production.High-tech sectors such as the Aeronautics and Astronautics that develops rapidly especially in recent years, nuclear energy, the high temperature resistant of material and high temperature lubricating performance have been proposed requirements at the higher level: high strength, resistance to wear, high reliability and higher temperature etc., the high temperature lubricating performance of material has become the assurance efficiency of heat engine, the restraining factors in life-time service life-span.
The object of the invention is to provide a kind of effectively anti-oxidant, resistant to elevated temperatures slip coating in order to solve above-mentioned technical barrier.
The present invention is matrix, (CaF by Ni/Al alloy underlayer and Ni60A
2+ BaF
2+ B
2O
3+ PbO+WC) be that the slip coating of high temperature solid lubricant is formed.The prescription of slip coating (weight percent) is:
Ni60A alloy powder 52.0～64.0
CaF
2Powder 12.0～19.0
BaF
2Powder 8.0～12.0
B
2O
3Powder 2.0～10.0
PbO powder 2.0～10.0
WC powder 0.0～3.0
The preparation process of nickel alloy base high-temp antioxidant lubricating coating of the present invention is as follows: the preparation of (1) slip coating composite powder: in proportion with CaF
2And BaF
2The powder uniform mixing in 1200 ℃ of following fusions, cooling, pulverizing, grinding, and is crossed 320 mesh sieves with this mixture.Again in proportion with this powder and Ni60A, B
2O
3, powder such as PbO, WC carried out batch mixing 12 hours under mechanical stirring; (2) metal substrate pre-treatment: will treat that the matel coated surface carries out mechanical polishing, making its surface smoothness is 5.Be preheated to 450 ± 10 ℃ then, plucking carried out on the surface handle; (3) spraying bond coating: preheating is carried out on pretreated surface, to 140 ± 10 ℃, adopted powder flame heat spray rifle that the Ni/Al composite powder is applied to the surface, underlayer thickness is controlled at 0.06～0.08mm scope; (4) spraying slip coating: adopt powder flame heat spray rifle, at oxygen pressure 1.5Mpa, under the condition of acetylene gas pressure 1.0Mpa, the slip coating composite powder that makes in 4 (1) is applied on the Ni/Al bottom, the slip coating gauge control is in 0.10～0.14mm scope; (5) aftertreatment of coating: with coating insulation 0.5 hour, be cooled to room temperature under 200 ℃, then slip coating carried out the mechanical polishing on surface, make it surface smoothness 〉= 6, the slip coating gauge control is in 0.08～0.10mm scope.
Nickel alloy base high-temp antioxidant lubricating coating of the present invention is a kind of novel high-temperature lubricating material, and its fundamental property is: 1. thermostability, and slight in the oxidation of 400～800 ℃ of high temperature lower surfaces; 2. favorable mechanical performance, enough surface hardnesses and cohesive strength; 3. good lubricating property under high temperature and friction condition, has lower friction and wear; 4. metal substrate there are not corrosion and other infringement etc.
The performance index of nickel alloy base high-temp antioxidant lubricating coating of the present invention:
*Rub(bing)test condition: bolt disc type high[elevated, load 40N, linear velocity 0.59m/s, 400～700 ℃ of temperature, friction pair material 1Cr18Ni9Ti stainless steel.Adopted the multiple high temperature solid lubricant that in ℃ temperature range of room temperature～800, can play the good lubrication effect in technical characterictic (1) slip coating.(2) adopted the Ni/Al alloy underlayer that can effectively strengthen slip coating and metal substrate cohesive strength.(3) spraying coating process is simple.
| Project | Technical indicator |
| Surface hardness, HV cohesive strength, N/mm 2Rate of oxidation, g/m 2H frictional wear frictional coefficient wear resistance, 1 * 10 -3The mg/m use temperature, ℃ | 958 6.97 0.42 0.25～0.27 0.2～1.0 room temperature～800 |
Its characteristics are not change the Machine Design and the material of component, and friction surface is imposed slip coating, realize excellent surface protection and high temperature lubricating.Can be used as high temperature lubricating (or wear-resistant) coatings applications mechanical friction pair in non-ferrous metal and smelting iron and steel, petrochemical complex, building materials and other high-temperature technology field; friction surface is effectively protected; reduce friction and abrasion; prevent to kill between the surface, guarantee the good operation of friction means under high temperature atmosphere.
Embodiment 1: take by weighing 65 parts of Ni60A alloy powders, CaF
215.5 part, BaF
29.5 part, B
2O
37 parts, 2 parts of PbO.Earlier with CaF
2And BaF
2Behind the uniform mixing 1200 ℃ of congruent meltings, pulverize, sieve, again with other powder uniform mixing.Adopt QT-7/h spray gun spraying Ni/Al alloy powder on the 1Cr18Ni9Ti Stainless Steel Disc earlier, spray again and state mixed lubricated composite powder.Slip coating that coats and stainless steel bolt are on bolt dish high[elevated, and 600 ℃, to rubbing, its frictional coefficient 0.25, the wear rate of slip coating are 0.0002mg/m in the atmospheric environment.
Embodiment 2: take by weighing 70 parts of Ni60A alloy powders, CaF
217 parts, BaF
212 parts, B
2O
32 parts, PbO10 part.Prepare the slip coating powder by method described in the embodiment 1, coating Ni/Al bottom and slip coating on Stainless Steel Disc.On bolt dish high[elevated, 600 ℃, in the atmospheric environment with this slip coating and stainless steel bolt to rubbing, frictional coefficient 0.26, the wear rate of slip coating are 0.001mg/m.
Embodiment 3: take by weighing 55 parts of Ni60A alloy powders, CaF
214 parts, BaF
28 parts, B
2O
32 parts, PbO5 part, 3 parts of WC.Prepare slip coating on the Stainless Steel Disc by method described in the embodiment 1.On bolt dish high[elevated, in 650 ℃ and the atmospheric environment with this slip coating and stainless steel bolt to rubbing, frictional coefficient 0.27, slip coating wear rate are 0.0005mg/m.
Claims (2)
1. high-temperature antioxidant lubricating coating is characterized in that by Ni/Al alloy underlayer and Ni60A alloy powder 52.0～64.0, CaF
2Powder 12.0～19.0, BaF
2Powder 8.0～12.0, B
2O
3Powder 2.0～10.0, PbO powder 2.0～10.0, WC powder 0.0～3.0 (weight percent) are formed.
2. the preparation method of the high-temperature antioxidant lubricating coating described in claims 1 comprises:
(1) preparation of slip coating composite powder: with CaF
2Powder and BaF
2The powder uniform mixing in 1200 ℃ of following fusions, cooling, pulverizing, grinding, and is crossed 320 mesh sieves with this mixture, again with Ni60A, B
2O
3, PbO, WC powder mixed under mechanical stirring 12 hours;
(2) metal substrate pre-treatment: will treat that the matel coated surface carries out mechanical polishing, making its surface smoothness is 5.Be preheated to 450 ± 10 ℃ then, plucking carried out on the surface handle;
(3) spraying bond coating: pretreated surface is preheated to 140 ± 10 ℃, adopts powder flame heat spray rifle that the Ni/Al composite powder is applied to the surface, underlayer thickness is controlled at 0.06～0.08mm scope.
(4) spraying slip coating: adopt powder flame heat spray rifle at oxygen pressure 1.5Mpa, under the condition of acetylene gas pressure 1.0Mpa, the slip coating composite powder that makes is applied on the Ni/Al bottom, the slip coating gauge control is in 0.10～0.14mm scope;
(5) aftertreatment of coating: with coating insulation 0.5 hour, be cooled to room temperature under 200 ℃, then slip coating carried out the mechanical polishing on surface, make its smooth finish 〉= 6, the slip coating gauge control is in 0.08～0.10mm scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99121023A CN1088098C (en) | 1999-09-29 | 1999-09-29 | High-temperature antioxidant lubricating coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99121023A CN1088098C (en) | 1999-09-29 | 1999-09-29 | High-temperature antioxidant lubricating coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1247892A true CN1247892A (en) | 2000-03-22 |
| CN1088098C CN1088098C (en) | 2002-07-24 |
Family
ID=5281760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99121023A Expired - Fee Related CN1088098C (en) | 1999-09-29 | 1999-09-29 | High-temperature antioxidant lubricating coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1088098C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328336C (en) * | 2005-07-11 | 2007-07-25 | 西安交通大学 | Method for preparing self-lubricating coat in use for high temperature |
| CN100402164C (en) * | 2005-07-14 | 2008-07-16 | 中南大学 | Production of solid lubricating sealed coating |
| CN104403743A (en) * | 2014-10-22 | 2015-03-11 | 安徽荣达阀门有限公司 | High-efficiency wear-resistant antioxidant high-temperature-resistant emulsified cutting oil and preparation method thereof |
| CN109530187A (en) * | 2018-10-27 | 2019-03-29 | 上海骋润高分子材料有限公司 | The spraying method of lubricant coating |
| CN112628010A (en) * | 2020-12-14 | 2021-04-09 | 大连海事大学 | Single-cylinder diesel engine cylinder sleeve temperature field control device and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH691384A5 (en) * | 1995-06-01 | 2001-07-13 | Rieter Ag Maschf | Textile Machinery with embedded solid lubricants. |
| CN1059224C (en) * | 1998-10-08 | 2000-12-06 | 中国科学院兰州化学物理研究所 | Corrosionproof lubricant coating based on molybdenum disulfide |
-
1999
- 1999-09-29 CN CN99121023A patent/CN1088098C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328336C (en) * | 2005-07-11 | 2007-07-25 | 西安交通大学 | Method for preparing self-lubricating coat in use for high temperature |
| CN100402164C (en) * | 2005-07-14 | 2008-07-16 | 中南大学 | Production of solid lubricating sealed coating |
| CN104403743A (en) * | 2014-10-22 | 2015-03-11 | 安徽荣达阀门有限公司 | High-efficiency wear-resistant antioxidant high-temperature-resistant emulsified cutting oil and preparation method thereof |
| CN109530187A (en) * | 2018-10-27 | 2019-03-29 | 上海骋润高分子材料有限公司 | The spraying method of lubricant coating |
| CN112628010A (en) * | 2020-12-14 | 2021-04-09 | 大连海事大学 | Single-cylinder diesel engine cylinder sleeve temperature field control device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1088098C (en) | 2002-07-24 |
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