CN109637863A - A kind of surface treatment method of electrical contact - Google Patents
A kind of surface treatment method of electrical contact Download PDFInfo
- Publication number
- CN109637863A CN109637863A CN201811410136.4A CN201811410136A CN109637863A CN 109637863 A CN109637863 A CN 109637863A CN 201811410136 A CN201811410136 A CN 201811410136A CN 109637863 A CN109637863 A CN 109637863A
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- electrical contact
- parts
- polishing
- grinding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of surface treatment methods of electrical contact, electrical contact to be processed is put into centrifugal grinder, then abrasive 20-35 parts of addition, 5-8 parts of size and 45-65 parts of distilled water, centrifugal grinder revolving speed is set as 1200-1500r/min, centrifugal grinder is closed after grinding 10-15min, the electrical contact after taking out grinding；Electrical contact after grinding is added in vibratory finishing machine, takes out electrical contact after vibropolish 35-50min；Electrical contact after rough polishing is put into chemical polishing bath, contains polishing trough liquid in chemical polishing bath, polishing tank liquor includes 5-8 part of fluoboric acid, and 0-15 parts of phosphatase 11,3-8 parts of sulfuric acid and 65-75 parts of water；Electrical contact is taken out after handling 25-35min in chemical polishing bath；Electrical contact after polishing is put into supersonic wave cleaning machine and is cleaned, the sulfuric acid solution that concentration is 35% is added in supersonic wave cleaning machine, takes out electrical contact after cleaning 40-55min；Electrical contact after cleaning is put into infrared-ray dryer and carries out drying drying.
Description
Technical field
The present invention relates to electrical contact processing technique field, espespecially a kind of surface treatment method of electrical contact.
Background technique
Electrical contact is the important component of high-voltage circuitbreaker, switchgear, disconnecting switch, earthing switch, and performance directly affects
The quality and service life of these High-Voltage Electrical Appliances.Electrical contact is the weight of high-voltage circuitbreaker, switchgear, disconnecting switch, earthing switch
Component is wanted, performance directly affects the quality and service life of these High-Voltage Electrical Appliances.In high pressure, super-pressure SF6 circuit breaker system
In, for arcing contact used at present based on CuW alloy, the moving arcing contact in past arcing contact is fingertip -- spring structure, it is this
Structure is complicated, and spring works are heated, and use reliability is deteriorated.Electrical contact as the core component in high-voltage switch equipment,
Play a part of cut-offfing, be connected, be widely used in various high voltage load switches, SF6 breaker, load ratio bridging switch and open greatly
In disconnected capacity isolating switch and earthing switch.The contact resistance of electrical contact is that one of measurement electrical contact performance is basic and important
Technical parameter directly affects the reliability of electric contact-system.The contact resistance of electrical contact is big, and electric contact-system fever can be made more,
Higher temperature rise and bigger power consumption are generated, early stage melting welding or bonding is likely to occur in system work, will lead to when serious
Electrical contact failure, therefore, key problem of the people by the research of contact resistance as electrical contact reliability influences electrical contact contact
There are many factor of resistance, and other than the resistance of contact pressure, contact form and electrical contact itself, shape, hardness, there are also electricity touchings
Surface roughness, Superficial Foreign Body, flatness and the skin covering of the surface etc. of head, therefore the surface treatment mode of electrical contact is focused on
Contact the contact resistance of electrical contact.
Summary of the invention
The technical problem to be solved by the present invention is to the contact resistance of electrical contact is big, it is more to will lead to electric contact-system fever, appearance
Electrical contact failure is easily led to, the shortcomings that in order to overcome the prior art, now provides a kind of surface treatment method of electrical contact.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
The present invention provides a kind of surface treatment method of electrical contact, including following operating procedure:
S1: grinding process: electrical contact to be processed is put into centrifugal grinder, and abrasive 20-35 parts, leaching is then added
Agent 5-8 parts and distilled water 45-65 parts of profit, centrifugal grinder revolving speed is set as 1200-1500r/min, is closed after grinding 10-15min
Centrifugal grinder is closed, the electrical contact after taking out grinding；
S2: polishing process: 1) rough polishing operates: the electrical contact after grinding being added in vibratory finishing machine, in vibratory finishing machine
Coarse abrasive grains 20-30 parts of addition, 8-15 parts of ortho phosphorous acid, 8-15 parts of sulphite, 1-2 parts of surfactant, distilled water 45-65
Part, electrical contact is taken out after vibropolish 35-50min；
2) essence throws operation: the electrical contact after rough polishing being put into chemical polishing bath, fine grinding particle is added in chemical polishing bath
15-25 parts and nitrate 5-8 parts, chemical polishing bath is interior to contain polishing trough liquid, and polishing tank liquor includes 5-8 parts of fluoboric acid, phosphatase 11 0-
15 parts, 3-8 parts of sulfuric acid and 65-75 parts of water；Electrical contact is taken out after handling 25-35min in chemical polishing bath；
S3: cleaning process: the electrical contact after polishing is put into supersonic wave cleaning machine and is cleaned, in supersonic wave cleaning machine
The sulfuric acid solution that concentration is 35% is added, takes out electrical contact after cleaning 40-55min；
S4: baking process: the electrical contact after cleaning being put into infrared-ray dryer and carries out drying drying, in electricity after drying
Contact surface wraps up lubricating oil, carries out bagging and packaging.
As a preferred technical solution of the present invention, the abrasive includes following components, in terms of mass fraction: oxidation
20-30 parts of iron, 15-25 parts of titanium oxide, 15-25 parts of magnesia, 15-25 parts of ferrous oxide.
As a preferred technical solution of the present invention, the abrasive is the spherical particle that diameter is 1-3mm.
As a preferred technical solution of the present invention, the grain diameter of the coarse abrasive grains is 80-100um, fine grinding
The grain diameter of grain is 20-40um.
As a preferred technical solution of the present invention, polishing tank liquor temperature remains 25-35 in the chemical polishing bath
DEG C, polishing current density is 2.3-2.5A/dm2。
The beneficial effects obtained by the present invention are as follows being: electrical contact surface treatment method provided by the present invention first passes through centrifugation and grinds
The step of abrasive and electrical contact are carried out mixed grinding by grinding machine, removes the burr and circle printing on electrical contact surface, then passes through machine
The mode of tool rough polishing and electrochemistry finishing polish reduces the degree of roughness on electrical contact surface, using the process of pickling；So that electric
The contact resistance of contact is reduced to minimum, and further eliminates the electrostatic benefit on electrical contact surface, ensure that electrical contact makes
With stability in the process.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described, it should be understood that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
Embodiment
Embodiment 1: the present invention provides a kind of surface treatment method of electrical contact, including following operating procedure:
S1: grinding process: electrical contact to be processed is put into centrifugal grinder, and 30 parts of abrasive, infiltration is then added
5 parts and 65 parts of distilled water of agent, centrifugal grinder revolving speed is set as 1200-1500r/min, and closing centrifugation is ground after grinding 10-15min
Grinding machine, the electrical contact after taking out grinding；
S2: polishing process: 1) rough polishing operates: the electrical contact after grinding being added in vibratory finishing machine, in vibratory finishing machine
25 parts of coarse abrasive grains of addition, 15 parts of ortho phosphorous acid, 10 parts of sulphite, 2 parts of surfactant, 53 parts of distilled water, vibropolish
Electrical contact is taken out after 35-50min；
2) essence throws operation: the electrical contact after rough polishing being put into chemical polishing bath, fine grinding particle is added in chemical polishing bath
15 parts and 5 parts of nitrate, contain polishing trough liquid in chemical polishing bath, and polishing tank liquor includes 5 parts of fluoboric acid, and 5 parts of phosphatase 11, sulfuric acid 5
Part and 75 parts of water；Electrical contact is taken out after handling 25-35min in chemical polishing bath；
S3: cleaning process: the electrical contact after polishing is put into supersonic wave cleaning machine and is cleaned, in supersonic wave cleaning machine
The sulfuric acid solution that concentration is 35% is added, takes out electrical contact after cleaning 40-55min；
S4: baking process: the electrical contact after cleaning being put into infrared-ray dryer and carries out drying drying, in electricity after drying
Contact surface wraps up lubricating oil, carries out bagging and packaging.
Further, the abrasive includes following components, in terms of mass fraction: 20-30 parts of iron oxide, titanium oxide 15-
25 parts, 15-25 parts of magnesia, 15-25 parts of ferrous oxide.
Further, the abrasive is the spherical particle that diameter is 1-3mm.
Further, the grain diameter of the coarse abrasive grains is 80-100um, and the grain diameter of fine abrasive grains is 20-
40um。
Further, polishing tank liquor temperature remains 25-35 DEG C in the chemical polishing bath, and polishing current density is 2.3-
2.5A/dm2。
Embodiment 2:
Embodiment 2 is identical as above-described embodiment operating procedure, the difference is that the processing auxiliary material dosage of the two is different.
S1: grinding process: electrical contact to be processed is put into centrifugal grinder, and 35 parts of abrasive, infiltration is then added
8 parts and 57 parts of distilled water of agent, centrifugal grinder revolving speed is set as 1200-1500r/min, and closing centrifugation is ground after grinding 10-15min
Grinding machine, the electrical contact after taking out grinding；
S2: polishing process: 1) rough polishing operates: the electrical contact after grinding being added in vibratory finishing machine, in vibratory finishing machine
25 parts of coarse abrasive grains of addition, 15 parts of ortho phosphorous acid, 10 parts of sulphite, 2 parts of surfactant, 53 parts of distilled water, vibropolish
Electrical contact is taken out after 35-50min；
2) essence throws operation: the electrical contact after rough polishing being put into chemical polishing bath, fine grinding particle is added in chemical polishing bath
15 parts and 5 parts of nitrate, contain polishing trough liquid in chemical polishing bath, and polishing tank liquor includes 5 parts of fluoboric acid, and 5 parts of phosphatase 11, sulfuric acid 5
Part and 75 parts of water；Electrical contact is taken out after handling 25-35min in chemical polishing bath；
S3: cleaning process: the electrical contact after polishing is put into supersonic wave cleaning machine and is cleaned, in supersonic wave cleaning machine
The sulfuric acid solution that concentration is 35% is added, takes out electrical contact after cleaning 40-55min；
S4: baking process: the electrical contact after cleaning being put into infrared-ray dryer and carries out drying drying, in electricity after drying
Contact surface wraps up lubricating oil, carries out bagging and packaging.
Embodiment 3:
Embodiment 3 is identical as above-described embodiment operating procedure, the difference is that the processing auxiliary material dosage of the two is different.
S1: grinding process: electrical contact to be processed is put into centrifugal grinder, and 30 parts of abrasive, infiltration is then added
5 parts and 65 parts of distilled water of agent, centrifugal grinder revolving speed is set as 1200-1500r/min, and closing centrifugation is ground after grinding 10-15min
Grinding machine, the electrical contact after taking out grinding；
S2: polishing process: 1) rough polishing operates: the electrical contact after grinding being added in vibratory finishing machine, in vibratory finishing machine
25 parts of coarse abrasive grains of addition, 15 parts of ortho phosphorous acid, 10 parts of sulphite, 2 parts of surfactant, 53 parts of distilled water, vibropolish
Electrical contact is taken out after 35-50min；
2) essence throws operation: the electrical contact after rough polishing being put into chemical polishing bath, fine grinding particle is added in chemical polishing bath
15 parts and 5 parts of nitrate, contain polishing trough liquid in chemical polishing bath, and polishing tank liquor includes 8 parts of fluoboric acid, and 5 parts of phosphatase 11, sulfuric acid 8
Part and 69 parts of water；Electrical contact is taken out after handling 25-35min in chemical polishing bath；
S3: cleaning process: the electrical contact after polishing is put into supersonic wave cleaning machine and is cleaned, in supersonic wave cleaning machine
The sulfuric acid solution that concentration is 35% is added, takes out electrical contact after cleaning 40-55min；
S4: baking process: the electrical contact after cleaning being put into infrared-ray dryer and carries out drying drying, in electricity after drying
Contact surface wraps up lubricating oil, carries out bagging and packaging.
Obtained electrical contact after being handled by operating procedure described in embodiment 1-3, to its contact resistance, surface roughness and
Surface electrostatic effect etc. is tested, and is as a result evaluated by A, B, C, D, as shown in the table:
| Embodiment | Contact resistance | Surface roughness | Surface electrostatic effect |
| Embodiment 1 | A | B | A |
| Embodiment 2 | C | A | B |
| Embodiment 3 | B | A | A |
The electrical contact obtained after being handled it can be seen from table according to operating procedure described in embodiment 1, in its contact electricity
Effect is preferable in terms of resistance and surface electrostatic effect；The electrical contact obtained after being handled according to operating procedure described in embodiment 2, at it
Effect is preferable in terms of surface roughness；The electrical contact obtained after handling according to operating procedure described in embodiment 3 is thick on its surface
Effect is preferable in terms of rugosity and surface electrostatic effect.
Electrical contact surface treatment method provided by the present invention first passes through centrifugal grinder and carries out abrasive and electrical contact
The step of mixed grinding, removes the burr and circle printing on electrical contact surface, then passes through mechanical rough polishing and electrochemistry finishing polish
Mode reduces the degree of roughness on electrical contact surface, using the process of pickling；So that the contact resistance of electrical contact is reduced to minimum,
And the electrostatic benefit for further eliminating electrical contact surface, ensure that the stability of electrical contact in use.
Finally, it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, still can be right
Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features.It is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (5)
1. a kind of surface treatment method of electrical contact, which is characterized in that including following operating procedure:
S1: grinding process: electrical contact to be processed is put into centrifugal grinder, and abrasive 20-35 parts, size is then added
5-8 parts and distilled water 45-65 part set centrifugal grinder revolving speed as 1200-1500r/min, closed after grinding 10-15min from
Heart grinder, the electrical contact after taking out grinding；
S2: polishing process: 1) rough polishing operates: the electrical contact after grinding being added in vibratory finishing machine, is added in vibratory finishing machine
20-30 parts of coarse abrasive grains, 8-15 parts of ortho phosphorous acid, 8-15 parts of sulphite, 1-2 parts of surfactant, 45-65 parts of distilled water,
Electrical contact is taken out after vibropolish 35-50min；
2) essence throws operation: the electrical contact after rough polishing being put into chemical polishing bath, fine grinding particle 15-25 is added in chemical polishing bath
Part and nitrate 5-8 part, polishing trough liquid is contained in chemical polishing bath, polishing tank liquor includes 5-8 parts of fluoboric acid, 0-15 parts of phosphatase 11,
3-8 parts of sulfuric acid and 65-75 parts of water；Electrical contact is taken out after handling 25-35min in chemical polishing bath；
S3: cleaning process: the electrical contact after polishing is put into supersonic wave cleaning machine and is cleaned, is added in supersonic wave cleaning machine
The sulfuric acid solution that concentration is 35% takes out electrical contact after cleaning 40-55min；
S4: baking process: the electrical contact after cleaning being put into infrared-ray dryer and carries out drying drying, in electrical contact after drying
Lubricating oil is wrapped up on surface, carries out bagging and packaging.
2. a kind of surface treatment method of electrical contact according to claim 1, which is characterized in that the abrasive include with
Lower component, in terms of mass fraction: 20-30 parts of iron oxide, 15-25 parts of titanium oxide, 15-25 parts of magnesia, ferrous oxide 15-25
Part.
3. a kind of surface treatment method of electrical contact according to claim 2, which is characterized in that the abrasive is diameter
For the spherical particle of 1-3mm.
4. a kind of surface treatment method of electrical contact according to claim 1, which is characterized in that of the coarse abrasive grains
Grain partial size is 80-100um, and the grain diameter of fine abrasive grains is 20-40um.
5. a kind of surface treatment method of electrical contact according to claim 1, which is characterized in that in the chemical polishing bath
Polishing tank liquor temperature remains 25-35 DEG C, and polishing current density is 2.3-2.5A/dm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410136.4A CN109637863A (en) | 2018-11-23 | 2018-11-23 | A kind of surface treatment method of electrical contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410136.4A CN109637863A (en) | 2018-11-23 | 2018-11-23 | A kind of surface treatment method of electrical contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109637863A true CN109637863A (en) | 2019-04-16 |
Family
ID=66069253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811410136.4A Withdrawn CN109637863A (en) | 2018-11-23 | 2018-11-23 | A kind of surface treatment method of electrical contact |
Country Status (1)
| Country | Link |
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| CN (1) | CN109637863A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369498A (en) * | 2021-08-10 | 2021-09-10 | 陕西斯瑞新材料股份有限公司 | Surface post-treatment method for 3D printing copper alloy contact material |
| CN114800206A (en) * | 2022-05-13 | 2022-07-29 | 中国科学院合肥物质科学研究院 | Automatic mechanical coating removing method for armored cable conductor superconducting joint |
| CN115142065A (en) * | 2022-06-09 | 2022-10-04 | 宁波顺成电器有限公司 | Surface treatment method for reducing contact resistance of rivet type contact surface |
-
2018
- 2018-11-23 CN CN201811410136.4A patent/CN109637863A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369498A (en) * | 2021-08-10 | 2021-09-10 | 陕西斯瑞新材料股份有限公司 | Surface post-treatment method for 3D printing copper alloy contact material |
| CN114800206A (en) * | 2022-05-13 | 2022-07-29 | 中国科学院合肥物质科学研究院 | Automatic mechanical coating removing method for armored cable conductor superconducting joint |
| CN115142065A (en) * | 2022-06-09 | 2022-10-04 | 宁波顺成电器有限公司 | Surface treatment method for reducing contact resistance of rivet type contact surface |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190416 |
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| WW01 | Invention patent application withdrawn after publication |