CN109676438A - A kind of electrical contact deburring cleaning polishing technique - Google Patents
A kind of electrical contact deburring cleaning polishing technique Download PDFInfo
- Publication number
- CN109676438A CN109676438A CN201811410027.2A CN201811410027A CN109676438A CN 109676438 A CN109676438 A CN 109676438A CN 201811410027 A CN201811410027 A CN 201811410027A CN 109676438 A CN109676438 A CN 109676438A
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- CN
- China
- Prior art keywords
- electrical contact
- polishing
- cleaning
- dry ice
- water
- Prior art date
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- 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
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
-
- 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
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
-
- 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)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a kind of electrical contact deburring cleaning polishing techniques, including four first wash, polishing, secondary cleaning, post-processing steps；Operation of the present invention is simple, defect rate is low, the greasy dirt impurity on electrical contact surface is removed using warm water, flowing water and heat treatment that cleaning agent is added when passing through first wash, it throws and electrical contact surface is processed by shot blasting by rough polishing, middle throwing and essence again, the electrical contact surface gloss after polishing can not only be greatly improved, but also the Micro scratching on electrical contact surface after polishing can be effectively eliminated, polishing effect is good, the polishing fluid of environment-friendly type is used simultaneously, and pollution-free, surface treatment effect is good；Secondary cleaning is carried out by the method for Dry ice cleaning, dry ice particles are directly injected to electrical contact surface, moment distillation, the problem of there is no secondary pollutions, while the step of saving drying, work efficiency is high, it further polishes electrical contact surface while cleaning, improves polishing effect.
Description
Technical field
The present invention relates to electrical contact production technical field, espespecially a kind of electrical contact deburring cleaning polishing technique.
Background technique
Contact material be for switching, relay, electrical connection and electric insert-pull element contact material, also known as electricity touching
Head material is generally divided to forceful electric power contact material and two kinds of light current contact material.In device for switching, electrical contact is directly taken on point
It is disconnected with connect circuit and carry running current or carry the function of overload current, the pass of each electric appliances within the regular hour
Key function controls the electrical endurance of electric appliance such as the make-break capacity of electrical power distribution apparatus, and the reliability of relay both depends on contact
Working performance and quality.Contact is also link most weak in device for switching and is easy out of order part simultaneously: once contact
System cisco unity malfunction, if short circuit cun occurs for electric system, High Voltage Circuit Breaker Contacts refusal disconnects, will cause extremely serious
Consequence.
Electrical contact is the important component of high-voltage circuitbreaker, switchgear, disconnecting switch, earthing switch, the main property of device for switching
The length in energy and service life, depends greatly on the quality of electrical contact performance.Electrical contact is usually required that leads with good
Electrically, lower contact resistance, higher resistance fusion welding energy, higher resistance to arc erosion energy and anti-material transfer ability, it is right
In vacuum electrical contact material, also requiring to shut off is worth that small, compressive resistance is high and breaking capacity is high.There are many type of electrical contact, different
The electrical contact processing method of type is different, the burr and adherency that the electrical contact remained on surface that just production has been completed has process to generate
Greasy dirt, burr do not handle it is clean if will have a direct impact on the performance of electrical contact, existing electrical contact debarring process is complicated,
Cleaning effect is bad.
Summary of the invention
It is complicated that the technical problem to be solved by the present invention is to existing electrical contact debarring process, and cleaning effect is bad, now mentions
For a kind of electrical contact deburring cleaning polishing technique, to solve the above problems.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:
The present invention provides a kind of electrical contact deburring cleaning polishing technique, comprises the following specific steps that:
S1: first wash: electrical contact is placed in the basketry of reticular structure, and basketry is soaked in the pond that cleaning agent is added
20-30min is steeped, coolant-temperature gage control is at 35 ° -40 ° in pond, after immersion, with circulating water by the electrical contact surface in basketry
Cleaning agent is rinsed well, is then heat-treated the electrical contact after cleaning, in vacuum environment, controlled at 80~150
DEG C, heat treatment time 20-30min removes residual organic matter；
S2: polishing: the electrical contact after heat treatment is put into polishing machine, using rough polishing wax water, adjusts the revolving speed of polishing machine
Rough polishing 15-20min is carried out for 2500r/min；The waxy stone water in, the revolving speed for adjusting polishing machine is during 4800r/min is carried out
Polish 10-12min；Zirconium pearl or stainless shot, water and purification polishing fluid are added into polishing machine, polishing fluid is after 60 ° of preheatings
It is added, is taken out after polishing 10-15min is taken out after shaking 15 minutes under room temperature；
S3: secondary cleaning: the electrical contact after polishing is laid on web plate, is carried out clearly with dry ice spray gun to electrical contact surface
It washes, adjusts the dry ice density value and operating air pressure value of dry ice spray gun, first uniformly back and forth spray electrical contact upper surface with dry ice spray gun,
Then by the uniformly reciprocal injection upwards of web plate bottom, electrical contact lower surface is cleaned；
S4: post-processing: checking the electrical contact after secondary cleaning, will polish underproof electrical contact and choose, and repeats
Step S2 and its after the step of, qualified electrical contact will be examined to be placed in antirust passivation aqua and impregnate 40-60min,
Then it is cleaned 1-2 times with alkaline cleaner, then electrical contact is transferred to equipped with being cleaned by ultrasonic in protectant water tank, then will
Electrical contact is transferred in the water tank that water temperature is 40 ° -50 ° and is cleaned using pure water, then electrical contact is transferred to the water tank that water temperature is 30 °
Electrical contact draining is finally put into drying in baking oven and sealed up for safekeeping by middle immersion.
As a preferred technical solution of the present invention, purification polishing fluid is environment-friendly metal polishing fluid in step S2,
The preparation method comprises the following steps: by weight by 10 parts of organic acid and 6 parts of organic base mixings, then 4 parts of surfactant, water-soluble is added thereto
Property it is 0.6 part and 2 parts of inorganic salts of bright auxiliary agent organic, water stirring is then added.
As a preferred technical solution of the present invention, in step S2 before being polished, electrical contact is first put into mill
It is ground in disk, abrasive material pearl of the addition having a size of 3-5mm, the mass ratio of abrasive material pearl and electrical contact is 1:1.2-1:2.
As a preferred technical solution of the present invention, the spray head of dry ice spray gun uses Fan spray head, dry ice in step S3
Density is 1.6, operating air pressure 0.6Mpa.
As a preferred technical solution of the present invention, after dry ice spray gun cleans electrical contact two sides in step S3,
It is primary cleaning will to be repeated after electrical contact stirring rolling again.
The beneficial effects obtained by the present invention are as follows being: operation of the present invention is simple, and defect rate is low, uses and adds when passing through first wash
The warm water, flowing water and heat treatment for entering cleaning agent remove the greasy dirt impurity on electrical contact surface, then pass through rough polishing, middle throwing and essence throwing pair
Electrical contact surface is processed by shot blasting, the electrical contact surface gloss after polishing can not only be greatly improved, but also can effectively eliminate
The Micro scratching on electrical contact surface after polishing, polishing effect is good, while using the polishing fluid of environment-friendly type, pollution-free, surface treatment
Effect is good；Secondary cleaning is carried out by the method for Dry ice cleaning, dry ice particles are directly injected to electrical contact surface, and moment distils,
The problem of there is no secondary pollutions, while the step of saving drying, work efficiency is high, further to electrical contact while cleaning
Surface polishing, improves polishing effect.
Specific embodiment
Embodiment: the present invention provides a kind of electrical contact deburring cleaning polishing technique, comprises the following specific steps that:
S1: first wash: electrical contact is placed in the basketry of reticular structure, and basketry is soaked in the pond that cleaning agent is added
20-30min is steeped, coolant-temperature gage control is at 35 ° -40 ° in pond, after immersion, with circulating water by the electrical contact surface in basketry
Cleaning agent is rinsed well, is then heat-treated the electrical contact after cleaning, in vacuum environment, controlled at 80~150
DEG C, heat treatment time 20-30min removes residual organic matter；
S2: polishing: the electrical contact after heat treatment is put into polishing machine, using rough polishing wax water, adjusts the revolving speed of polishing machine
Rough polishing 15-20min is carried out for 2500r/min；The waxy stone water in, the revolving speed for adjusting polishing machine is during 4800r/min is carried out
Polish 10-12min；Zirconium pearl or stainless shot, water and purification polishing fluid are added into polishing machine, polishing fluid is after 60 ° of preheatings
It is added, is taken out after polishing 10-15min is taken out after shaking 15 minutes under room temperature；
S3: secondary cleaning: the electrical contact after polishing is laid on web plate, is carried out clearly with dry ice spray gun to electrical contact surface
It washes, adjusts the dry ice density value and operating air pressure value of dry ice spray gun, first uniformly back and forth spray electrical contact upper surface with dry ice spray gun,
Then by the uniformly reciprocal injection upwards of web plate bottom, electrical contact lower surface is cleaned；
S4: post-processing: checking the electrical contact after secondary cleaning, will polish underproof electrical contact and choose, and repeats
Step S2 and its after the step of, qualified electrical contact will be examined to be placed in antirust passivation aqua and impregnate 40-60min,
Then it is cleaned 1-2 times with alkaline cleaner, then electrical contact is transferred to equipped with being cleaned by ultrasonic in protectant water tank, then will
Electrical contact is transferred in the water tank that water temperature is 40 ° -50 ° and is cleaned using pure water, then electrical contact is transferred to the water tank that water temperature is 30 °
Electrical contact draining is finally put into drying in baking oven and sealed up for safekeeping by middle immersion.
Preferably, it is environment-friendly metal polishing fluid, preparation method are as follows: will have by weight that polishing fluid is refined in step S2
10 parts and 6 parts of the organic base mixings of machine acid, then 4 parts of surfactant, 0.6 part of water-soluble organic bright auxiliary agent and nothing are added thereto
2 parts of machine salt, water stirring is then added, polishing fluid made from this method is pollution-free, and bright property is good.
Preferably, first electrical contact is put into mill and is ground before being polished in step S2, be added having a size of 3-
The mass ratio of the abrasive material pearl of 5mm, abrasive material pearl and electrical contact is 1:1.2-1:2, and preliminary deburring, surface treatment effect is good.
Preferably, the spray head of dry ice spray gun uses Fan spray head in step S3, and spray regime is wide, and dry ice density is 1.6, work
Making air pressure is 0.6Mpa.
Preferably, in step S3 dry ice spray gun by electrical contact two sides cleaning after, then by electrical contact stirring rolling after again
Repeated washing is primary, so that electrical contact surface clean is complete.
Working principle: operation of the present invention is simple, and defect rate is low, when passing through first wash using be added cleaning agent warm water,
Flowing water and heat treatment remove the greasy dirt impurity on electrical contact surface, before being polished, first electrical contact are put into mill and is ground
The mass ratio of mill, abrasive material pearl of the addition having a size of 3-5mm, abrasive material pearl and electrical contact is 1:1.2-1:2, preliminary deburring, table
Surface treatment effect is good, then throws and be processed by shot blasting to electrical contact surface by rough polishing, middle throwing and essence, and polishing can not only be greatly improved
Electrical contact surface gloss afterwards, and the Micro scratching on electrical contact surface after polishing can be effectively eliminated, polishing effect is good, simultaneously
Pollution-free using the polishing fluid of environment-friendly type, surface treatment effect is good；
Secondary cleaning is carried out by the method for Dry ice cleaning, the principle of Dry ice cleaning is using compressed air as power and load
Body is accelerated particle with dry ice particles, is ejected into cleaned body surface by dedicated jet cleaner, utilizes high speed
The conversion of the energy such as momentum change, distillation, the fusing of Solid dry ice particle of movement, make the dirt of cleaned body surface, greasy dirt,
The quick freezes such as residual impurity to condense, embrittlement, be stripped, and are removed with air-flow simultaneously.It will not be to cleaned material body surface
Face, especially metal surface cause any harm, and will not influence the finish of metal surface.Dry ice is sublimed into two after use
Carbon oxide gas, without any residual, non-toxic, free from extraneous odour is safe and convenient to use, and its cleaning quality is stablized, dry ice particles
It is directly injected to electrical contact surface, moment distillation, the problem of secondary pollution is not present, and meanwhile the step of saving drying, work
It is high-efficient, it further polishes electrical contact surface while cleaning, improves polishing effect.
It finally inspects for acceptance, qualified electrical contact will be examined to be placed in antirust passivation aqua and impregnate 40-
60min, antirust be passivated aqua be it is water-soluble, no pollution to the environment, use is safe, passivation while can remove workpiece
The dirts such as greasy dirt, rust staining, weldering spot, oxide layer, the free iron on surface, it is easy to use degreasing and alkaline cleaning method from metal surface
It disposes；Then it is cleaned 1-2 times with alkaline cleaner, then electrical contact is transferred to equipped with progress ultrasound in protectant water tank clearly
It washes, then electrical contact is transferred in the water tank that water temperature is 40 ° -50 ° and is cleaned using pure water, then electrical contact is transferred to water temperature and is
It is impregnated in 30 ° of water tank, electrical contact draining is finally put into drying in baking oven and is sealed up for safekeeping.Easy to operate, defect rate is low.
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 electrical contact deburring cleaning polishing technique, which is characterized in that comprise the following specific steps that:
S1: first wash: electrical contact is placed in the basketry of reticular structure, and basketry is impregnated in the pond that cleaning agent is added
20-30min, coolant-temperature gage control is at 35 ° -40 ° in pond, after immersion, with circulating water by the clear of the electrical contact surface in basketry
Lotion is rinsed well, is then heat-treated the electrical contact after cleaning, in vacuum environment, controlled at 80~150 DEG C,
Heat treatment time is 20-30min, removes residual organic matter；
S2: polishing: the electrical contact after heat treatment is put into polishing machine, using rough polishing wax water, the revolving speed for adjusting polishing machine is
2500r/min carries out rough polishing 15-20min；The waxy stone water in, the revolving speed for adjusting polishing machine are to throw during 4800r/min is carried out
Light 10-12min；Zirconium pearl is added into polishing machine or stainless shot, water and purification polishing fluid, polishing fluid add after 60 ° of preheatings
Enter, is taken out after polishing 10-15min is taken out after shaking 15 minutes under room temperature；
S3: secondary cleaning: the electrical contact after polishing is laid on web plate, is cleaned with dry ice spray gun to electrical contact surface,
The dry ice density value and operating air pressure value of dry ice spray gun are adjusted, first uniformly back and forth sprays electrical contact upper surface with dry ice spray gun, so
Afterwards by the uniformly reciprocal injection upwards of web plate bottom, electrical contact lower surface is cleaned；
S4: post-processing: checking the electrical contact after secondary cleaning, will polish underproof electrical contact and choose, and repeats step
S2 and its after the step of, qualified electrical contact will be examined to be placed in antirust passivation aqua and impregnate 40-60min, then
It is cleaned 1-2 times with alkaline cleaner, then electrical contact is transferred to equipped with being cleaned by ultrasonic in protectant water tank, then electricity is touched
Head is transferred in the water tank that water temperature is 40 ° -50 ° and is cleaned using pure water, then electrical contact is transferred in the water tank that water temperature is 30 ° and is soaked
Electrical contact draining is finally put into drying in baking oven and sealed up for safekeeping by bubble.
2. a kind of electrical contact deburring cleaning polishing technique according to claim 1, which is characterized in that refined in step S2
Polishing fluid is environment-friendly metal polishing fluid, preparation method are as follows: by weight by 10 parts and 6 parts of organic base mixings of organic acid, then
4 parts of surfactant, water-soluble organic bright 0.6 part and 2 parts of inorganic salts of auxiliary agent are added thereto, water stirring, which is then added, is
It can.
3. a kind of electrical contact deburring cleaning polishing technique according to claim 1, which is characterized in that in step S2 into
Before row polishing, first electrical contact is put into mill and is ground, the abrasive material pearl having a size of 3-5mm is added, abrasive material pearl and electrical contact
Mass ratio is 1:1.2-1:2.
4. a kind of electrical contact deburring cleaning polishing technique according to claim 1, which is characterized in that dry ice in step S3
The spray head of spray gun uses Fan spray head, and dry ice density is 1.6, operating air pressure 0.6Mpa.
5. a kind of electrical contact deburring cleaning polishing technique according to claim 1, which is characterized in that dry ice in step S3
After spray gun cleans electrical contact two sides, then it is primary by cleaning is repeated after electrical contact stirring rolling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410027.2A CN109676438A (en) | 2018-11-23 | 2018-11-23 | A kind of electrical contact deburring cleaning polishing technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811410027.2A CN109676438A (en) | 2018-11-23 | 2018-11-23 | A kind of electrical contact deburring cleaning polishing technique |
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| Publication Number | Publication Date |
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| CN109676438A true CN109676438A (en) | 2019-04-26 |
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| CN201811410027.2A Withdrawn CN109676438A (en) | 2018-11-23 | 2018-11-23 | A kind of electrical contact deburring cleaning polishing technique |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252732A (en) * | 2019-06-29 | 2019-09-20 | 新乡市七星钎焊科技有限公司 | A kind of cleaning method of brazing solder |
| CN112454013A (en) * | 2020-10-16 | 2021-03-09 | 陕西斯瑞新材料股份有限公司 | Auxiliary metal processing technology for CuCr contact surface treatment processing |
| CN112828772A (en) * | 2019-11-25 | 2021-05-25 | 新兴县同鑫五金塑胶有限公司 | Stainless steel surface grinding and polishing process |
| CN113231794A (en) * | 2021-05-14 | 2021-08-10 | 安庆谢德尔汽车零部件有限公司 | Processing method of new energy automobile busbar |
| CN113363118A (en) * | 2021-07-05 | 2021-09-07 | 浙江极智电气有限公司 | Production process of thermal element for circuit breaker |
| CN113388842A (en) * | 2021-05-19 | 2021-09-14 | 陕西斯瑞新材料股份有限公司 | Low-cost CuCr contact surface deoxidation auxiliary metal processing technology |
| CN113699000A (en) * | 2021-08-24 | 2021-11-26 | 福达合金材料股份有限公司 | Cleaning agent for removing stains on surface of rivet electrical contact and application of cleaning agent |
| CN113927467A (en) * | 2021-09-06 | 2022-01-14 | 陕西斯瑞新材料股份有限公司 | Automatic processing unit for surface treatment and deburring of copper-chromium electrical contact material |
| 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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2018
- 2018-11-23 CN CN201811410027.2A patent/CN109676438A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252732A (en) * | 2019-06-29 | 2019-09-20 | 新乡市七星钎焊科技有限公司 | A kind of cleaning method of brazing solder |
| CN112828772A (en) * | 2019-11-25 | 2021-05-25 | 新兴县同鑫五金塑胶有限公司 | Stainless steel surface grinding and polishing process |
| CN112454013A (en) * | 2020-10-16 | 2021-03-09 | 陕西斯瑞新材料股份有限公司 | Auxiliary metal processing technology for CuCr contact surface treatment processing |
| CN112454013B (en) * | 2020-10-16 | 2021-10-22 | 陕西斯瑞新材料股份有限公司 | Auxiliary metal processing technology for CuCr contact surface treatment processing |
| CN113231794A (en) * | 2021-05-14 | 2021-08-10 | 安庆谢德尔汽车零部件有限公司 | Processing method of new energy automobile busbar |
| CN113388842A (en) * | 2021-05-19 | 2021-09-14 | 陕西斯瑞新材料股份有限公司 | Low-cost CuCr contact surface deoxidation auxiliary metal processing technology |
| CN113363118A (en) * | 2021-07-05 | 2021-09-07 | 浙江极智电气有限公司 | Production process of thermal element for circuit breaker |
| CN113363118B (en) * | 2021-07-05 | 2024-03-19 | 浙江极智电气有限公司 | Production process of thermal element for circuit breaker |
| CN113699000A (en) * | 2021-08-24 | 2021-11-26 | 福达合金材料股份有限公司 | Cleaning agent for removing stains on surface of rivet electrical contact and application of cleaning agent |
| CN113927467A (en) * | 2021-09-06 | 2022-01-14 | 陕西斯瑞新材料股份有限公司 | Automatic processing unit for surface treatment and deburring of copper-chromium electrical contact material |
| 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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Application publication date: 20190426 |
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