CN100402164C - Production of solid lubricating sealed coating - Google Patents
Production of solid lubricating sealed coating Download PDFInfo
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- CN100402164C CN100402164C CNB200510031866XA CN200510031866A CN100402164C CN 100402164 C CN100402164 C CN 100402164C CN B200510031866X A CNB200510031866X A CN B200510031866XA CN 200510031866 A CN200510031866 A CN 200510031866A CN 100402164 C CN100402164 C CN 100402164C
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Abstract
A process for preparing the coated lubricating-sealing layer on the mechanical part features that the gas flame plating is used to apply the solid lubricating powder of MoS2, graphite, or teflon onto the surface of mechanical part to form a coated layer playing lubricating and sealing roles.
Description
Technical field
The present invention relates to a kind ofly to be used for components of machine such as gear, screw thread, axle and ring set, have the preparation method of the coating of lubricated, the effect of obturaging, belong to mechanical engineering field.
Background technology
Component of machine is in when design, must consider machining accuracy and assembling demand and allows certain tolerance; Metal material can expand when temperature raises, the component of machine of making by metal material in/when high temperature uses, also must consider the difference between the thermal expansion and leave enough design tolerances, when component of machine being given a shock desaxe took place, this design tolerance can require bigger.Because the existence of this tolerance, component of machine is when operation, and stationarity is subjected to very big influence.Component of machine in use, because of friction produces wearing and tearing.When working condition one timing, reducing wear mainly contains two kinds of ways: the one, and the hardness of raising component of machine material, the 2nd, reduce the coefficient of friction between the component surface, promptly take lubricant method.The hardness that improves material can increase material supply and processing and manufacturing cost.Many materials are when hardness increases, and plasticity/toughness can descend, and for the component of machine of the load that withstands shocks, the toughness of material is more even more important than hardness.Reducing friction is a kind of effective way that reduces wear.Reducing friction can start with from two aspects, and the one, manufacture and design self-lubricating material, the 2nd, add lubricant.The the manufacturing and designing of self-lubricating material is in research and development period, and fluid lubricant can't use under the environment that unsealed environment and temperature raise.
Summary of the invention
In order to overcome component of machine owing to running stability that exists design tolerance to bring and the contradiction between the lubricity, the invention provides a kind of preparation method who is used for component of machine solid lubrication, seal coating, this coating can reduce the phase mutual friction between the component of machine, improves stationarity and service life that plant equipment is used.
The preparation method of solid lubrication, seal coating comprises: to the degreasing of workpiece; Jacket; The sandblast roughening treatment; The carburizing flame spraying; Coating is handled; Specific embodiment is:
Degreasing: in order to promote combining between coating and the workpiece substrate, simultaneously, in order to reduce the influence of lipid to sandblast sand grains and sandblast effect, workpiece must carry out ungrease treatment before blasting treatment.The workpiece degreasing is carried out in steam chest, and degreasing time 5-60 minute, took out the cooling back.
Jacket: adhere at the position that workpiece does not need to spray for fear of coating material, unnecessary herein surface roughening during simultaneously for fear of sandblast, workpiece be need not to spray the position coat, the most common way is to adopt to coat the band coating, or adopts heat resistant plastice or elastomeric material to coat.
Sandblast: the main purpose of sandblast is for the adsorbate of removing surface of the work and/or oxide skin, and makes the surface of the work roughening, improves the adhesion between coating and the surface of the work.Abrasive blast equipment can be manual operations, also can be two-sidedly to carry out automatically, and the sandblast sand grains is an emergy, and the size of sand grains is the 30-80 order, and blasting pressure is 0.2-0.5MPa, and sand-blasting gun is 50-150mm apart from the workpiece distance, blows off with compressed air after the sandblast.
Flame-spraying: flame-spraying powder stock applicatory has MoS
2, graphite-based, PTFE base solid lubricant, the powder particle size is between 10-150 μ m, coating thickness is 100 μ m to 5mm, the spraying powder feeding rate is 10-200g/min, is the 110%-300% of design tolerance.When spraying the coating material of graphite-containing composition not, adopt neutral flame, when the coating material of spraying graphite-containing composition, adopt carburizing flame.
Dusty spray can be a cladded type, compound, also can be mixed type, and particle can be spherical, also can the right and wrong sphere.
The processing of coating is handled: coating is carried out compacting, shaping.Loose, the porous of the solid lubricant coating of flame-spraying preparation in use easily comes off, and the coating size can not accurately be filled up Course Exercise in Machinery Elements Design, manufacturing tolerance or slit, also is difficult to play the effect of obturaging.Different according to parts shape, physical dimension, adopt different processing processing modes respectively.For the solid lubrication/seal coating on the parts such as bearing, ring, can adopt the mode of wheel load to carry out the shaping processing; For the seal coating on the parts such as screw rod/screw thread, can adopt the mode of supporting nut driving to carry out the shaping processing; Can adopt the mode of mould punching press to carry out shaping for the lubricated/seal coating in gear, the turbo blade tooth portion handles.
No matter adopt which kind of mode that coating is processed processing, it is fixed that the machining deformation amount of coating should be come according to the effect of coating (lubricate, obturage or the two furthermore), generally between 10%-200%.
Cleaning: during flame-spraying, even near the spraying position, adopted wrap, but still may be at parts some part that does not coat or edge stay some coating burs, and after coating is handled through processing, also can stay some residues at the parts edge.These coating burs or residue are cleaned.
The present invention adopts vapour degreasing to workpiece before sandblast lower than adopting organic matter degreasing cost, avoided organic matter to the pollution of environment with to the harm of human body; Adopt heat resistant rubber/plastics jacket technology, coat/to take off speed packet fast, do not stay any bur after taking off bag, jacket can use repeatedly, and production cost reduces; Flame-spraying is lower than other coating production cost, when flame was carburizing flame, the greasy property of graphitiferous coating material can not reduce, and it is fast that flame-spraying formation is coated with interval velocity, the coating layer thickness adjustable range is big, is suitable for the preparation requirement of multiple parts to lubricated/seal coating; The lubricant coating of flame-spraying preparation can further be processed processing, not only can fill up tolerance, gap well after the shaping, and the compressible morphotropism that coating still possesses can not brought hell and high water to the component of machine assembling; The coating that flame-spraying is made after compacting, both can solve chemical industry, component of machine in, the sealing problem that uses under the low temperature, also can reduce the phase mutual friction between the component of machine, improve stationarity and service life that plant equipment is used.
Description of drawings
Fig. 1: flame-spraying schematic diagram;
Fig. 2: the spraying position of axle, ring and the wheel that the compacting coating is used;
Fig. 3: the spraying position of sealing thread and screw processing usefulness the pairing nut;
Fig. 4: turbo blade coats position, spraying position and jacket shape;
Fig. 5: turbo blade increment coating is processed with diel and decompressor schematic diagram.
The specific embodiment
Lubricant coating with aviation gas engine compression blade tooth portion is prepared as example, places steam box to carry out ungrease treatment in blade.Adopt corresponding heat resistant rubber jacket to coat to blade tooth/leaf intersection.Tooth portion is carried out blasting treatment, take out blade.Start powder feeding, the Ni-C powder is sent in the flame, granular size is between 10-150 μ m, and powder feeding rate is at 10-200g/min; Nebulizer gas pressure is at 0.2-0.8MPa, and carrier gas flux is at 2-10 l/min; Oxygen pressure is at 0.2-1.0MPa, and oxygen flow is at 15-60 l/min, and gaseous-pressure 0.2-1.5MPa, flow are 10-80 l/min; Atomization pressure is 0.3-1.4MPa, and gas flow is 30-300 l/min; Spray distance is 80-300mm, and spray gun and workpiece speed of related movement are 1-10m/min, and coating thickness reaches 1-2mm and stops powder feeding when thick.Adopt the stamping die corresponding that coating is carried out the shaping processing, as shown in Figure 5 with blade tooth portion shape, size.
Flame spray coating device as shown in Figure 1, this device is made up of oxygen cylinder, fuel gas bottle, atomizing gas cylinder/pipe, powder feeder, flame gun and six essential parts of work rest.Burning gases can be propane, propylene, acetylene etc.; Powder feeder can be a monotubular, and when two kinds of components of spraying, powder feeder also can be the bitubular, and powder feeding can be the screw drive form, also can be the air pressure form, and the powder carrier gas can be nitrogen, argon gas or compressed air; Atomization gas can be a nitrogen, also can be compressed air; Flame gun can adopt the air cooling form, also can adopt the water-cooled form; Workpiece can rotate, translation, and the spray gun motion can be adopted mechanical device, also can adopt robot control.Close flame after having sprayed, cooling moments later can be taken off workpiece from workbench/falsework, takes out wrap, just can carry out subsequent treatment to coating.
Claims (3)
1. the preparation method of solid lubrication, seal coating is characterized in that: comprise the degreasing to workpiece; Jacket; The sandblast roughening treatment; Flame-spraying; Coating is handled; Specific embodiment is:
Degreasing: the workpiece degreasing is carried out in steam chest, and degreasing time 5-60 minute, took out the cooling back;
Jacket: workpiece be need not to spray the position coat, adopt to coat the band coating, or adopt heat resistant plastice or elastomeric material to coat;
Sandblast: the sandblast sand grains is an emergy, and the size of sand grains is the 30-80 order, and blasting pressure is 0.2-0.5MPa, and sand-blasting gun is 50-150mm apart from the workpiece distance, blows off with compressed air after the sandblast;
Flame-spraying: the flame-spraying powder stock has MoS
2, graphite-based, PTFE base solid lubricant, the powder particle size is between 10-150 μ m, the spraying powder feeding rate is 10-200g/min, coating thickness is 100 μ m to 5mm, is the 110%-300% of design tolerance;
The processing of coating is handled: coating is carried out compacting, shaping, and cleaning surfaces, the machining deformation amount of coating is between 10%-200%;
Described solid lubrication, seal coating are meant the lubricant coating of aviation gas engine compression blade tooth portion.
2. preparation method according to claim 1 is characterized in that: adopt neutral flame when spraying the coating material of graphite-containing composition not, adopt carburizing flame when the coating material of spraying graphite-containing composition.
3. preparation method according to claim 1 is characterized in that: for the lubricated/seal coating in gear, the turbo blade tooth portion, adopt the mode of mould punching press to process processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510031866XA CN100402164C (en) | 2005-07-14 | 2005-07-14 | Production of solid lubricating sealed coating |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200510031866XA CN100402164C (en) | 2005-07-14 | 2005-07-14 | Production of solid lubricating sealed coating |
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| CN1895795A CN1895795A (en) | 2007-01-17 |
| CN100402164C true CN100402164C (en) | 2008-07-16 |
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| CNB200510031866XA Expired - Fee Related CN100402164C (en) | 2005-07-14 | 2005-07-14 | Production of solid lubricating sealed coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639122A (en) * | 2008-08-02 | 2010-02-03 | 谢夫勒两合公司 | Shift fork of shoe with tolerance balancing |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101954346B (en) * | 2010-08-23 | 2012-10-10 | 西安航空动力股份有限公司 | Method and tool for coating organic silicon resin wearable layer of compressor stator component |
| CN102424972A (en) * | 2011-12-02 | 2012-04-25 | 东宇东庵（天津）热处理系统有限公司 | Method for manufacturing metal surface composite coating |
| CN106148741A (en) * | 2016-08-15 | 2016-11-23 | 亚太水处理(天长)有限公司 | A kind of preparation method of the aerator bearing outside self-lubricating abrasion-proof material that floats |
| 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 |
| CN110014206A (en) * | 2019-05-09 | 2019-07-16 | 福尼斯(南京)表面工程技术有限公司 | A kind of robot automatic flame surfacing system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202534A (en) * | 1998-04-17 | 1998-12-23 | 清华大学 | Method of preparing ceramic coating by laser smelting coating after metal surface plasma spray |
| CN1247892A (en) * | 1999-09-29 | 2000-03-22 | 中国科学院兰州化学物理研究所 | High-temperature antioxidant lubricating coating |
| CN1501986A (en) * | 2001-02-28 | 2004-06-02 | 日本活塞环株式会社 | Wear-resistant sliding member |
| US6773217B2 (en) * | 2002-07-30 | 2004-08-10 | Weirton Steeel Corporation | Polymeric coating formulations and steel substrate composites |
-
2005
- 2005-07-14 CN CNB200510031866XA patent/CN100402164C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1202534A (en) * | 1998-04-17 | 1998-12-23 | 清华大学 | Method of preparing ceramic coating by laser smelting coating after metal surface plasma spray |
| CN1247892A (en) * | 1999-09-29 | 2000-03-22 | 中国科学院兰州化学物理研究所 | High-temperature antioxidant lubricating coating |
| CN1501986A (en) * | 2001-02-28 | 2004-06-02 | 日本活塞环株式会社 | Wear-resistant sliding member |
| US6773217B2 (en) * | 2002-07-30 | 2004-08-10 | Weirton Steeel Corporation | Polymeric coating formulations and steel substrate composites |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639122A (en) * | 2008-08-02 | 2010-02-03 | 谢夫勒两合公司 | Shift fork of shoe with tolerance balancing |
| CN101639122B (en) * | 2008-08-02 | 2015-05-06 | 谢夫勒科技股份两合公司 | Shift fork of shoe with tolerance balancing |
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| CN1895795A (en) | 2007-01-17 |
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