CN109136823A - A kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate - Google Patents
A kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate Download PDFInfo
- Publication number
- CN109136823A CN109136823A CN201811329477.9A CN201811329477A CN109136823A CN 109136823 A CN109136823 A CN 109136823A CN 201811329477 A CN201811329477 A CN 201811329477A CN 109136823 A CN109136823 A CN 109136823A
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- CN
- China
- Prior art keywords
- steel plate
- plasma spraying
- self
- copper powder
- lubricating bearing
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- 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.)
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Classifications
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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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/123—Spraying molten metal
Abstract
The present invention relates to a kind of self-lubricating bearing plasma spraying methods for covering copper powder steel plate, comprising the following steps: 1) carries out drying and processing with copper powder to experiment；2) blasting treatment, purification, roughening, activation workpiece surface are carried out to matrix steel plate；3) it will be fixed on plasma spraying machine workpiece clamping plate by the matrix steel plate after blasting treatment, adjust the distance between plasma spraying machine spray gun and matrix steel plate；4) dried copper powders are sent into powder feeder, it is ensured that powder feeding is smooth；5) it adjusts different parameters to be sprayed, obtains corresponding sample.This method is high-efficient, easy to operate, and equipment is small relative to current traditional net strip sintering furnace space occupied.Since the energy comparison concentration of plasma keeps the temperature gradient of plasma arc very big, matrix be heated practical very little, not will cause part deformation, does not change condition of heat treatment, does not change the heat treatment property of parent metal, stable, coating quality height；The oxygen content or nitrogen content of coating significantly reduce.
Description
Technical field
The present invention relates to a kind of self-lubricating bearing processing method for covering copper powder steel plate, specially a kind of self-lubricating bearing is used
Cover the plasma spraying method of copper powder steel plate.
Background technique
Self-lubricating bearing has outstanding self-lubrication and reliability, is suitable for making in the state of not needing maintenance for a long time
With.Other than needing to meet carrying, antifriction, the groundworks performance such as wear-resisting, high-precision, high revolving speed, high temperature resistant, high load,
The requirements such as long-life, pollution-free, lightweight, have become the common demands of client, can satisfy mechanical equipment to member
Device miniaturization, productivity is high, and long service life is laborsaving, energy saving and pollution-free etc. requirement.From current domestic and international technology
From the point of view of development, the automation of self-lubricating bearing material, high efficiency, high quality of production are the key that self-lubricating bearing production.
The preparation of self-lubricating bearing material at present is mainly sintering process, and agglomerating plant production there is a problem of following:
Furnace body is longer, and equipment is huge, and debugging is difficult, it is difficult to guarantee enough sintering precisions；In-furnace temperature is difficult to control, real
Border temperature check has more difficulty；Power consumption is big, expensive；Daily maintenance maintenance consumption is given up larger.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of self-lubricating bearing plasma sprays for covering copper powder steel plate
Coating method.
The technical solution adopted by the present invention is that: a kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate, packet
Include following steps:
Step 1) with copper powder carries out drying and processing to experiment, with temperature 1 hour of 150 DEG C in incubator, copper
About 300 microns of powder diameter；
Step 2) surface preparation carries out blasting treatment, purification, roughening, activation workpiece surface to matrix steel plate, and sandblasting is adopted
With the quartz sand of 60 mesh；
Step 3) will be fixed on plasma spraying machine workpiece clamping plate by the matrix steel plate after blasting treatment, adjustment etc.
The distance between plasma spray machine spray gun and matrix steel plate；
Dried copper powders are sent into powder feeder by step 4), it is ensured that powder feeding is smooth；
Step 5) adjusts different parameters and is sprayed, and obtains corresponding sample.
Further, the parameter in step 5) include combustion-supporting gas, working gas type and gas flow, voltage, electric current,
Spray distance, spray angle, movement speed, powder sending quantity, spraying road number, powder feeding flow.
Further, combustion-supporting gas uses H2。
Further, working gas uses pure nitrogen gas or nitrogen+(5%- spray gun movement speed 10%) hydrogen, for not
The material to react with nitrogen；Material using pure argon or argon gas+(5%-10%) hydrogen, for not reacting with argon gas
Material.Working air current is 30-50L/min.
Further, when working gas is nitrogen hydrogenation, operating voltage increases to 80-120V；When working gas is
When argon gas, operating voltage selects between 45-90V.
Further, spray distance 75-130mm, angle of spray are greater than 45 degree.
Further, spray gun movement speed is 350mm/min.
Further, it is 15-20g/min that powder feeding flow is selected when plasma spraying.
Further, combustion-supporting gas H2For 0L/h, voltage 52V, electric current 300A, powder feeder voltage is 4V, and road number is
4。
Further, combustion-supporting gas H2For 10L/h, voltage 49V, electric current 300A, powder feeder voltage is 12V, road number
It is 3.
The beneficial effects of the present invention are: high-efficient, easy to operate, equipment is empty relative to current traditional net strip sintering furnace land occupation
Between it is small.Energy comparison concentration in spraying process due to plasma keeps the temperature gradient of plasma arc very big, and matrix is heated real
Border very little does not change condition of heat treatment so not will cause part deformation, does not change the heat treatment property of parent metal, operation
Stablize, coating quality is high；The oxygen content or nitrogen content of coating significant can reduce.
Detailed description of the invention
Attached drawing 1 is the Olympus Optical shape appearance figure of the plasma spraying coating of sample 1-7.
Attached drawing 2 is sample shape appearance figure after edge sample.
Attached drawing 3 is the metallographic microscope shape appearance figure of plasma spraying coating.
Attached drawing 4 is sample 1-7 plasma spraying coating analysis of porosity figure.
Attached drawing 5 is shape appearance figure before and after sample structure strength test, and a is pattern before stretching, and b is pattern after stretching.
Specific embodiment
1. about 300 microns of copper powder to be put into in the electric heating constant-temperature blowing drying box of 150 DEG C of DHG-9030A model 10 points
Clock carries out drying and processing, with temperature 1 hour of 150 DEG C in incubator；
2. selecting Q235 steel as basis material, outer dimension is long 75mm × wide 42mm × plate thickness 12.5mm；To base
Body steel plate carries out blasting treatment, and sandblasting uses the quartz sand of 60 mesh；12 blocks of steel plates are pre-processed altogether, are in pairs same parameters
Play the role of backup；
3. by by the Interal fixation after blasting treatment on plasma spraying machine workpiece clamping plate, for post analysis,
Every group of sample all backups, and fixes two blocks of steel plates simultaneously every time；
4. adjusting the distance between spray gun and steel plate is 75-130mm, dried copper powders are then sent into powder feeder
In, because copper powder specific gravity is larger, in two that the bitubular scrapes disc type, choose the biggish powder feeding bucket powder feeding of power；
5. formally starting to spray after powder feeding is smooth, adjusts different parameters and spray to obtain 6 kinds of different samples, with enterprise's mesh
The control sample of preceding traditional mode of production is carried out than school.Design parameter is referring to table 1.
The setting of 1 plasma spraying design parameter of table
Morphology analysis can intuitively see the plasma-coated structure of 7 samples, it can be seen that distribution of pores.It is first
The surface topography of first microstructure of plasma sprayed coating is observed with Olympus, and pattern is as shown in Figure 1.Select sample 1 and 6 and enterprise
Sample 7 is compared, inlays sample after carrying out wire cutting respectively, as shown in Figure 2.During the preparation process it should be specifically noted that not destroy in coating
The structure of grain and the disengaging for preventing coating granule.Using CMY-200Z image pick-up type just setting three mesh metallographic microscopes under 100 times into
Row metallographic observation, sample 1,6,7 are as shown in Figure 3 respectively.It is soft using Image-Pro Plus 6.0 on the basis of observing metallographic
Part is opened the super depth of field metallograph of the coating morphology of acquisition on software, in figure layer copper powder form structure into
Data are checked in Statistics after row dyeing, further obtain the porosity of spraying copper powder layer, as shown in figure 4, specific number
According to as shown in table 2, it is clear that the porosity of sample 6 compares sample closer to production.
Copper powder area and porosity in 2 spray-on coating of table
Strength test further is combined to sample 1,6 and 7.First taking diameter on sample using wire cutting is 2.5 ㎝
Disk test test specimen as coating adhesion, and be bonded on mating plate with resin glue, as shown in Figure 5.It is adopted after solidification
Coating adhesion test is carried out on universal testing machine with tension test method and according to national standard GB/T8642, when record is broken
Power calculates bond strength, and data are as shown in table 3, such as Fig. 5 (b) of the sample after stretching.Obviously, the bond strength of sample 6 compared with
Height more meets production requirement.
Record sheet after 3 sample of table stretches
The above analysis, the technological parameter of sample 6 are optimal procedure parameters, technological parameter H2For 10L/h, voltage is
49V, electric current 300A, powder feeder voltage are 12V, and road number is 3.
Claims (7)
1. a kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate, characterized in that the following steps are included:
Step 1) carries out drying and processing to copper powder used, and with temperature 1 hour of 150 DEG C in incubator, partial size is
150-300 mesh；
Step 2) surface preparation carries out blasting treatment to matrix steel plate, and sandblasting uses the quartz sand of 60 mesh；Step 3) will pass through
Interal fixation after blasting treatment is on clamping plate；
Step 4) adjusts the distance between spray gun and steel plate, and then dried copper powders are sent into powder feeder；
Formally start to spray after step 5) powder feeding is smooth, adjusts different parameters and spray to obtain different samples, parameter includes helping
Combustion gas body, voltage, electric current, powder sending quantity, spraying road number, powder feeding flow, working gas type and gas flow, arc power, spray
Apply distance and spray angle.
2. a kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate according to claim 1, characterized in that
It is 15-20g/min that powder feeding flow is selected when plasma spraying.
3. a kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate according to claim 1, characterized in that
Working gas uses pure nitrogen gas or nitrogen+(5%-10%) hydrogen, the material for not reacting with nitrogen；Using pure argon
Or argon gas+(5%-10%) hydrogen, the material for not reacting with argon gas；Working gas flow uses 10-30L/min.
4. a kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate according to claim 1, characterized in that
When working gas is nitrogen hydrogenation, operating voltage selects between 80-120V；When working gas is argon gas, work electricity
It is pressed between 50-90V and selects.
5. a kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate according to claim 1, characterized in that
Spray distance is 75-130mm, and angle of spray is greater than 45 degree, and spray gun movement speed is 350mm/min.
6. a kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate according to claim 1, characterized in that
Combustion-supporting gas hydrogen flowing quantity is 0L/min, voltage 52V, electric current 300A, and powder sending quantity 4V, road number is 4.
7. a kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate according to claim 1, characterized in that
Combustion-supporting gas hydrogen flowing quantity is 0.17L/min, voltage 49V, electric current 300A, and powder sending quantity 12V, road number is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811329477.9A CN109136823A (en) | 2018-11-09 | 2018-11-09 | A kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811329477.9A CN109136823A (en) | 2018-11-09 | 2018-11-09 | A kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate |
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| Publication Number | Publication Date |
|---|---|
| CN109136823A true CN109136823A (en) | 2019-01-04 |
Family
ID=64808282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811329477.9A Pending CN109136823A (en) | 2018-11-09 | 2018-11-09 | A kind of self-lubricating bearing plasma spraying method for covering copper powder steel plate |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560579A (en) * | 2019-03-28 | 2020-08-21 | 广东光泰激光科技有限公司 | Anti-cracking low-temperature spraying process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942630A (en) * | 2009-07-06 | 2011-01-12 | 中国石油大学(北京) | Method for preparing super-hydrophobic metal coating by plasma spraying |
| CN103890420A (en) * | 2011-09-13 | 2014-06-25 | 马勒国际公司 | Thermal spray application of sliding bearing lining layer |
| CN107904543A (en) * | 2017-10-23 | 2018-04-13 | 中国人民解放军陆军装甲兵学院 | High densification copper alloy coating and preparation method thereof |
| CN108385053A (en) * | 2018-03-01 | 2018-08-10 | 西南科技大学 | A method of improving plasma spraying coating consistency |
-
2018
- 2018-11-09 CN CN201811329477.9A patent/CN109136823A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942630A (en) * | 2009-07-06 | 2011-01-12 | 中国石油大学(北京) | Method for preparing super-hydrophobic metal coating by plasma spraying |
| CN103890420A (en) * | 2011-09-13 | 2014-06-25 | 马勒国际公司 | Thermal spray application of sliding bearing lining layer |
| CN107904543A (en) * | 2017-10-23 | 2018-04-13 | 中国人民解放军陆军装甲兵学院 | High densification copper alloy coating and preparation method thereof |
| CN108385053A (en) * | 2018-03-01 | 2018-08-10 | 西南科技大学 | A method of improving plasma spraying coating consistency |
Non-Patent Citations (1)
| Title |
|---|
| 史月丽: "材料改性实验", 《材料改性实验》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560579A (en) * | 2019-03-28 | 2020-08-21 | 广东光泰激光科技有限公司 | Anti-cracking low-temperature spraying process |
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Application publication date: 20190104 |