CN103103468B - The technique of bearing shell spraying Babbitt metal - Google Patents
The technique of bearing shell spraying Babbitt metal Download PDFInfo
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- CN103103468B CN103103468B CN201310042583.XA CN201310042583A CN103103468B CN 103103468 B CN103103468 B CN 103103468B CN 201310042583 A CN201310042583 A CN 201310042583A CN 103103468 B CN103103468 B CN 103103468B
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- bearing shell
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Abstract
The present invention relates to the technique of bearing shell spraying Babbitt metal, comprise removal stress, roughing, Dehydroepiandrosterone derivative, precision work, ward off the steps such as tin process, spraying and stove endomixis.Babbitt metal arc-spraying machine is sprayed on the surface of bearing shell by the technique of bearing shell spraying Babbitt metal, and the bonding strength of Babbitt metal and bearing shell is improved greatly, and Schwellenwert reaches 57.1Mpa.When the mode of spraying makes Babbitt metal be attached to bearing shell surface, the intensity of each position of Babbitt metal is consistent, the also consistent and pore-free of density.Therefore, the mode of spraying preferably resolves the different and segregation problems that cannot change of the density because of Babbitt metal element that exists in casting mode, and the defect such as shelling, be full of cracks, bubble.The large requirement of vibration that the technique of bearing shell spraying Babbitt metal makes bearing shell can adapt to when equipment frequent starting and stopping machine is crossed critical, thus do not affect the safe operation of equipment and substantially prolongs work-ing life of bearing shell.
Description
Technical field
The present invention relates to a kind of spraying coating process, especially the technique of bearing shell spraying Babbitt metal.
Background technology
At present, Babbitt metal generally adopts centrifugally cast mode to be attached to bearing shell surface.Centrifugally cast mode not only makes the bonding strength on Babbitt metal and bearing shell surface reduce, but also the internal structure of Babbitt metal self is destroyed, and causes the performance of Babbitt metal self to reduce, easily produces the defects such as segregation, shelling, be full of cracks, bubble.Therefore, the large requirement of vibration that the bearing shell that Babbitt metal casts in surface does not adapt to when equipment frequent starting and stopping machine is crossed critical, affects the safe operation of equipment.In addition, the bearing shell life-span that Babbitt metal casts in surface is general shorter, and the shortest life-span, the longest life-span was also no more than 2 years at about 45 minutes.
Summary of the invention
The present invention be the technique for solving existing bearing shell babbitting have Babbitt metal and bearing shell poor bonding strength, reduce Babbitt metal self performance, to affect equipment safety operation and life-span etc. not enough and proposes, aim to provide have Babbitt metal and bearing shell bonding strength by force, ensure equipment safety operation and the bearing shell of the functions such as extension device work-ing life sprays the technique of Babbitt metal.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals:
The technique of bearing shell spraying Babbitt metal, comprises the following steps:
A. bearing shell de-stress, prevents bearing shell to be out of shape;
B. carry out Dehydroepiandrosterone derivative after bearing shell roughing, protium is spun off in bearing shell;
C. bearing shell precision work, makes the roughness of bearing shell endoporus and Babbitt metal bonding surface be less than or equal to 3.5 microns;
D. tin process is warded off on bearing shell surface, by tin water loading on bearing shell surface;
E. Babbitt metal is attached to bearing shell surface by the form of spraying;
F. the bearing shell after spraying is placed in stove and merges, and makes Babbitt metal be attached to bearing shell surface completely
As preferably, in step a, the temperature of bearing shell remains on and is more than or equal to 700 DEG C and constant temperature keeps 6-12 hour.High temperature is utilized to remove the stress of bearing shell.
As preferably, in step b, the temperature of bearing shell remains on and is more than or equal to 700 DEG C and constant temperature keeps 6-12 hour.High temperature is utilized to be spun off from bearing shell by hydrogen.
As preferably, before steps d, first use ammonium chloride liquid rinse bearing shell surface.Cleaning bearing shell surface makes bearing shell surface can coat Xi Shui completely.
As preferably, in step e, Babbitt metal is sprayed into bearing shell surface by arc-spraying machine.Spraying method makes the bonding strength on Babbitt metal and bearing shell surface greatly improve, and ensure that the normal work of bearing shell, and extends the work-ing life of bearing shell.
As preferably, during arc-spraying machine spraying, spray distance is 150-360 millimeter, and wire feed rate is 8-20M/min.Intensity during arc-spraying machine spraying is protected.
As preferably, in step f, the temperature in stove remains on 140 DEG C-300 DEG C and thermostatic hold-time is more than or equal to 4 hours.Be sprayed on bearing shell surface Babbitt metal can be combined completely with bearing shell surface.
According to technical scheme of the present invention, Babbitt metal arc-spraying machine is sprayed on the surface of bearing shell by the technique of bearing shell spraying Babbitt metal, and the bonding strength of Babbitt metal and bearing shell is improved greatly, and Schwellenwert reaches 57.1Mpa.When the mode of spraying makes Babbitt metal be attached to bearing shell surface, the intensity of each position of Babbitt metal is consistent, the also consistent and pore-free of density.Therefore, the mode of spraying preferably resolves the different and segregation problems that cannot change of the density because of Babbitt metal element that exists in casting mode, and the defect such as shelling, be full of cracks, bubble.The large requirement of vibration that the technique of bearing shell spraying Babbitt metal makes bearing shell can adapt to when equipment frequent starting and stopping machine is crossed critical, thus do not affect the safe operation of equipment and substantially prolongs work-ing life of bearing shell.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention.
1-babbitt layer, 2-tin layers, 3-bearing shell.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
Embodiment 1
The technique of bearing shell spraying Babbitt metal, comprises the following steps:
Bearing shell 3 is heated to 860 degrees Celsius and constant temperature and keeps 8 hours, utilize high temperature de-stress, prevent bearing shell 3 to be out of shape.
Remove stress after bearing shell 3 naturally cooling, bearing shell 3 is carried out rough turn processing, then bearing shell 3 is heated to 800 degrees Celsius and constant temperature and keeps 8 hours, utilize high temperature to be spun off from bearing shell 3 by protium.
Treat bearing shell 3 naturally cooling after Dehydroepiandrosterone derivative completes, then bearing shell 3 is carried out finish turning processing, make the roughness of bearing shell 3 endoporus and Babbitt metal bonding surface reach 3.2 microns.
After bearing shell 3 finish turning machines, first use ammonium chloride liquid rinse bearing shell 3 surface, and then tin water 2 is applied to bearing shell surface.
Ward off after tin process completes, with arc-spraying machine with the spray distance of 250 millimeters, with the wire feed rate of 12M/min, Babbitt metal 1 is sprayed into bearing shell 3 surface.During arc-spraying machine spraying, the voltage of motor is 22 volts, and electric current is 160 amperes.Compressed air pressure for wire feed is 6 kilograms, and pressurized air requires anhydrous, nothing oil, and temperature is 40 DEG C.
After having sprayed, bearing shell 3 to be placed in stove and with the temperature of 200 degrees Celsius, constant temperature keeps merging for 6 hours, Babbitt metal 1 can be combined completely with bearing shell 3 surface.
Embodiment 2
The technique of bearing shell spraying Babbitt metal, comprises the following steps:
Bearing shell 3 is heated to 750 degrees Celsius and constant temperature and keeps 12 hours, utilize high temperature de-stress, prevent bearing shell 3 to be out of shape.
Remove stress after bearing shell 3 naturally cooling, bearing shell 3 is carried out rough turn processing, then bearing shell 3 is heated to 900 degrees Celsius and constant temperature and keeps 6 hours, utilize high temperature to be spun off from bearing shell 3 by protium.
Treat bearing shell 3 naturally cooling after Dehydroepiandrosterone derivative completes, then bearing shell 3 is carried out finish turning processing, make the roughness of bearing shell 3 endoporus and Babbitt metal bonding surface reach 3.4 microns.
After bearing shell 3 finish turning machines, first use ammonium chloride liquid rinse bearing shell 3 surface, and then tin water 2 is applied to bearing shell surface.
Ward off after tin process completes, with arc-spraying machine with the spray distance of 200 millimeters, with the wire feed rate of 14M/min, Babbitt metal 1 is sprayed into bearing shell 3 surface.During arc-spraying machine spraying, the voltage of motor is 26 volts, and electric current is 180 amperes.Compressed air pressure for wire feed is 7 kilograms, and pressurized air requires anhydrous, nothing oil, and temperature is 30 DEG C.
After having sprayed, bearing shell 3 to be placed in stove and with the temperature of 180 degrees Celsius, constant temperature keeps merging for 8 hours, Babbitt metal 1 can be combined completely with bearing shell 3 surface.
Embodiment 3
The technique of bearing shell spraying Babbitt metal, comprises the following steps:
Bearing shell 3 is heated to 800 degrees Celsius and constant temperature and keeps 10 hours, utilize high temperature de-stress, prevent bearing shell 3 to be out of shape.
Remove stress after bearing shell 3 naturally cooling, bearing shell 3 is carried out rough turn processing, then bearing shell 3 is heated to 850 degrees Celsius and constant temperature and keeps 7 hours, utilize high temperature to be spun off from bearing shell 3 by protium.
Treat bearing shell 3 naturally cooling after Dehydroepiandrosterone derivative completes, then bearing shell 3 is carried out finish turning processing, make the roughness of bearing shell 3 endoporus and Babbitt metal bonding surface reach 3.0 microns.
After bearing shell 3 finish turning machines, first use ammonium chloride liquid rinse bearing shell 3 surface, and then tin water 2 is applied to bearing shell surface.
Ward off after tin process completes, with arc-spraying machine with the spray distance of 300 millimeters, with the wire feed rate of 10M/min, Babbitt metal 1 is sprayed into bearing shell 3 surface.During arc-spraying machine spraying, the voltage of motor is 18 volts, and electric current is 140 amperes.Compressed air pressure for wire feed is 5 kilograms, and pressurized air requires anhydrous, nothing oil, and temperature is 35 DEG C.
After having sprayed, bearing shell 3 to be placed in stove and with the temperature of 260 degrees Celsius, constant temperature keeps merging for 5 hours, Babbitt metal 1 can be combined completely with bearing shell 3 surface.
Embodiment 4
The technique of bearing shell spraying Babbitt metal, comprises the following steps:
Bearing shell 3 is heated to 880 degrees Celsius and constant temperature and keeps 8 hours, utilize high temperature de-stress, prevent bearing shell 3 to be out of shape.
Remove stress after bearing shell 3 naturally cooling, bearing shell 3 is carried out rough turn processing, then bearing shell 3 is heated to 780 degrees Celsius and constant temperature and keeps 10 hours, utilize high temperature to be spun off from bearing shell 3 by protium.
Treat bearing shell 3 naturally cooling after Dehydroepiandrosterone derivative completes, then bearing shell 3 is carried out finish turning processing, make the roughness of bearing shell 3 endoporus and Babbitt metal bonding surface reach 2.7 microns.
After bearing shell 3 finish turning machines, first use ammonium chloride liquid rinse bearing shell 3 surface, and then tin water 2 is applied to bearing shell surface.
Ward off after tin process completes, with arc-spraying machine with the spray distance of 330 millimeters, with the wire feed rate of 9M/min, Babbitt metal 1 is sprayed into bearing shell 3 surface.During arc-spraying machine spraying, the voltage of motor is 30 volts, and electric current is 200 amperes.Compressed air pressure for wire feed is 4 kilograms, and pressurized air requires anhydrous, nothing oil, and temperature is 50 DEG C.
After having sprayed, bearing shell 3 to be placed in stove and with the temperature of 160 degrees Celsius, constant temperature keeps merging for 10 hours, Babbitt metal 1 can be combined completely with bearing shell 3 surface.
Embodiment 5
The technique of bearing shell spraying Babbitt metal, comprises the following steps:
Bearing shell 3 is heated to 900 degrees Celsius and constant temperature and keeps 7 hours, utilize high temperature de-stress, prevent bearing shell 3 to be out of shape.
Remove stress after bearing shell 3 naturally cooling, bearing shell 3 is carried out rough turn processing, then bearing shell 3 is heated to 720 degrees Celsius and constant temperature and keeps 12 hours, utilize high temperature to be spun off from bearing shell 3 by protium.
Treat bearing shell 3 naturally cooling after Dehydroepiandrosterone derivative completes, then bearing shell 3 is carried out finish turning processing, make the roughness of bearing shell 3 endoporus and Babbitt metal bonding surface reach 2.5 microns.
After bearing shell 3 finish turning machines, first use ammonium chloride liquid rinse bearing shell 3 surface, and then tin water 2 is applied to bearing shell surface.
Ward off after tin process completes, with arc-spraying machine with the spray distance of 180 millimeters, with the wire feed rate of 16M/min, Babbitt metal 1 is sprayed into bearing shell 3 surface.During arc-spraying machine spraying, the voltage of motor is 20 volts, and electric current is 150 amperes.Compressed air pressure for wire feed is 8 kilograms, and pressurized air requires anhydrous, nothing oil, and temperature is 55 DEG C.
After having sprayed, bearing shell 3 to be placed in stove and with the temperature of 280 degrees Celsius, constant temperature keeps merging for 4 hours, Babbitt metal 1 can be combined completely with bearing shell 3 surface.
In a word, the foregoing is only preferred embodiment of the present invention, all equalizations done according to the present patent application the scope of the claims change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (4)
1. the technique of bearing shell spraying Babbitt metal, is characterized in that comprising the following steps:
A. bearing shell de-stress, prevents bearing shell to be out of shape;
B. carry out Dehydroepiandrosterone derivative after bearing shell roughing, protium is spun off in bearing shell;
C. bearing shell precision work, makes the roughness of bearing shell endoporus and Babbitt metal bonding surface be less than or equal to 3.5 microns;
D. tin process is warded off on bearing shell surface, by tin water loading on bearing shell surface;
E. Babbitt metal is attached to bearing shell surface by the form of spraying;
F. the bearing shell after spraying is placed in stove and merges, and makes Babbitt metal be attached to bearing shell surface completely;
In step a, the temperature of bearing shell remains on and is more than or equal to 700 DEG C and constant temperature maintenance 6-12 hour;
In step b, the temperature of bearing shell remains on and is more than or equal to 700 DEG C and constant temperature maintenance 6-12 hour;
Before steps d, first use ammonium chloride liquid rinse bearing shell surface;
In step e, Babbitt metal is sprayed into bearing shell surface by arc-spraying machine; During arc-spraying machine spraying, the voltage of motor is 18-30 volt, and electric current is 140-200 ampere, and the compressed air pressure for wire feed is 4-8 kilogram, and pressurized air requires anhydrous, nothing oil, and temperature is 30-55 DEG C;
In step f, the temperature in stove remains on 140 DEG C-300 DEG C and thermostatic hold-time is more than or equal to 4 hours.
2. the technique of bearing shell spraying Babbitt metal according to claim 1, is characterized in that: during arc-spraying machine spraying, spray distance is 150-360 millimeter, and wire feed rate is 8-20m/min.
3. the technique of bearing shell spraying Babbitt metal according to claim 1, is characterized in that: during arc-spraying machine spraying, the voltage of motor is 26 volts, electric current is 180 amperes, compressed air pressure for wire feed is 7 kilograms, and pressurized air requires anhydrous, nothing oil, and temperature is 30 DEG C.
4. the technique of bearing shell spraying Babbitt metal according to claim 1, is characterized in that: during arc-spraying machine spraying, the voltage of motor is 20 volts, electric current is 150 amperes, compressed air pressure for wire feed is 8 kilograms, and pressurized air requires anhydrous, nothing oil, and temperature is 55 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042583.XA CN103103468B (en) | 2013-01-24 | 2013-01-24 | The technique of bearing shell spraying Babbitt metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310042583.XA CN103103468B (en) | 2013-01-24 | 2013-01-24 | The technique of bearing shell spraying Babbitt metal |
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| Publication Number | Publication Date |
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| CN103103468A CN103103468A (en) | 2013-05-15 |
| CN103103468B true CN103103468B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310042583.XA Expired - Fee Related CN103103468B (en) | 2013-01-24 | 2013-01-24 | The technique of bearing shell spraying Babbitt metal |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106435563B (en) * | 2016-10-27 | 2019-05-03 | 北京科技大学 | A kind of method of bearing shell steel back spraying babbit coating |
| CN112303124A (en) * | 2020-10-20 | 2021-02-02 | 水利部杭州机械设计研究所 | Connecting coating for bearing bush cast babbit alloy and preparation process thereof |
| CN113153906A (en) * | 2021-04-26 | 2021-07-23 | 宜兴市环宇轴瓦制造有限公司 | LEG type sliding shoe supporting tile and manufacturing process thereof |
| CN114952310B (en) * | 2022-07-01 | 2022-12-06 | 浙江彰贵轴承科技有限公司 | Processing technology and equipment for babbit alloy bearing bush |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3440079A (en) * | 1965-02-10 | 1969-04-22 | Avco Corp | Spray coating |
| EP0939142A1 (en) * | 1998-02-27 | 1999-09-01 | Ticona GmbH | Thermal spray powder incorporating an oxidised polyarylene sulfide |
| CN102676974A (en) * | 2012-06-11 | 2012-09-19 | 山东理工大学 | Thermal spraying galvanizing method of thin plate |
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