CN110252740B - Special removing device and method for black spots on working face of rivet electrical contact - Google Patents
Special removing device and method for black spots on working face of rivet electrical contact Download PDFInfo
- Publication number
- CN110252740B CN110252740B CN201910456462.7A CN201910456462A CN110252740B CN 110252740 B CN110252740 B CN 110252740B CN 201910456462 A CN201910456462 A CN 201910456462A CN 110252740 B CN110252740 B CN 110252740B
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- screen
- rivet
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 206010027146 Melanoderma Diseases 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 21
- 230000002457 bidirectional effect Effects 0.000 claims description 16
- 239000003153 chemical reaction reagent Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 239000006260 foam Substances 0.000 claims description 10
- 239000008396 flotation agent Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 9
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 7
- 238000005187 foaming Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 238000009291 froth flotation Methods 0.000 claims description 3
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 3
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- -1 sodium fatty alcohol Chemical class 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 2
- 238000005498 polishing Methods 0.000 description 6
- 238000000227 grinding Methods 0.000 description 5
- 239000003082 abrasive agent Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- 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
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- 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
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/102—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration with means for agitating the 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
- B08B5/04—Cleaning by suction, with or without auxiliary action
- B08B5/043—Cleaning travelling work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a special removing device and a special removing method for a black spot of a working face of an electric rivet contact, comprising a cylinder body, wherein a vibration pump for driving the cylinder body to vibrate at high frequency is arranged on the cylinder body; the cylinder body is provided with a liquid discharge pipe communicated with the upper cavity, the liquid discharge pipe is provided with a second valve, and the position of the liquid discharge pipe communicated with the upper cavity is positioned above a certain height interval of the screen; and a third valve is arranged on the discharge pipe. The process comprises dry vibration and wet vibration. The method can effectively remove the black spots on the working surface of the rivet electric contact, but does not cause physical abrasion on the working surface of the rivet electric contact.
Description
Technical Field
The invention relates to the field of surface treatment of metal materials, in particular to a device and a method for removing black spots on a working surface of an electric rivet contact.
Background
The rivet electrical contact is applied to various relays, contactors, temperature controllers and contactors with various current levels, and is an important accessory for influencing the working reliability of a contact system of a switching device. The preparation process generally comprises the steps of preparing, grinding, annealing, pickling, polishing and the like, wherein black spots are frequently formed on a working surface after grinding, are distributed in a granular shape, are attached to a certain depth, and mainly comprise C, O, fe, cu and the like after testing.
Further analysis and research by the inventor of the application show that the black spots mainly come from solidification of organic glue (component C, O) caused by triangular prism and cylindrical abrasive materials used in the rivet grinding process, the organic glue is embedded into a working surface of the rivet in the grinding process, fe powder is used as abrasive materials, cu is a rivet matrix, and the Cu is also embedded into the working surface in the grinding process, so that the black spots are formed together. The black spot is difficult to remove once formed, because the black spot is small in size and penetrates into the rivet working face under the action of a capillary tube, and the surface of the working face can only be cleaned by using a common polishing machine, but the black spot is difficult to remove after reaching a certain depth. Therefore, research on how to remove the black spots on the working surface of the rivet electrical contact has important significance for improving the quality of the rivet electrical contact product.
For this reason, the applicant has previously filed a method for removing surface defects of rivet-type electrical contacts based on magnetic polishing, see chinese patent application No. CN201810975028.5, which is capable of removing black spots, but still needs to be further improved due to a certain degree of polishing wear on the working surface of rivet-type electrical contacts by the magnetic polishing method.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a device and a method for removing black spots on the working surface of a rivet electrical contact. The method can effectively remove the black spots on the working surface of the rivet electrical contact, but does not cause physical abrasion on the working surface of the rivet electrical contact, and is suitable for large-scale treatment of the black spots on the working surface of the rivet electrical contact, and has industrial implementation significance.
In order to achieve the above purpose, the technical scheme of the invention comprises a barrel, wherein a vibration pump for driving the barrel to vibrate at high frequency is arranged on the barrel, a screen for placing rivet electrical contacts is fixedly arranged in the barrel, the screen divides the barrel into an upper cavity and a lower cavity, a sealing cover is detachably, hermetically and fixedly arranged in the upper cavity of the barrel, an exhaust pipe led out of the barrel through a pipeline is further connected above the screen, the outer end of the exhaust pipe is an exhaust port, a lower partition plate is arranged below the screen at intervals, the lower cavity corresponds to a region between the lower partition plate and the screen to form a working cavity, a discharge pipe connected to the outside of the barrel through a pipeline is arranged on the lower partition plate, and a bidirectional fan is connected to the discharge pipe through a disc;
the cylinder body is provided with a liquid inlet pipe communicated with the working cavity, and the liquid inlet pipe is provided with a first valve;
the cylinder body is provided with a liquid discharge pipe communicated with the upper cavity, the liquid discharge pipe is provided with a second valve, and the position of the liquid discharge pipe communicated with the upper cavity is positioned above a certain height interval of the screen;
and a third valve is arranged on the discharge pipe.
The further arrangement is that a discharge hole is arranged at the position of the cylinder body relative to the side wall above the screen, and a fourth valve is arranged on the discharge hole.
The further setting is that the vibration output frequency of the vibration pump is adjustable, and the frequency adjusting range is 1-50HZ.
The invention also provides a method for removing the black spots on the working surface of the rivet electrical contact based on the device, which comprises the following steps:
(1) Setting the first valve, the second valve and the third valve to be in a closed state, opening a sealing cover to place the rivet electric contact on a screen, opening the third valve after closing the sealing cover, starting a bidirectional fan and a vibration pump, performing dry vibration on the rivet electric contact by utilizing vibration transmitted to the screen by the vibration pump, separating out black spots on a working surface, continuing dry vibration and exhausting air for at least 20 minutes, and then sequentially closing the third valve, the bidirectional fan and the vibration pump; the black spots are divided according to the size, wherein the black spots are small black spots smaller than 100 mu m and large black spots larger than 100 mu m, most small black spots are pumped away by a fan during dry vibration, and all large black spots and a small part of small black spots remain on a working surface.
(2) Opening a sealing cover, adding a reagent special for removing black spots, opening a first valve to introduce water into the device through a water inlet, starting a vibration pump when the water level reaches a screen position, opening the second valve when the water level reaches a second valve, enabling water to flow out of the second valve and circularly enter from the first valve, performing floatation wet vibration, continuously performing wet vibration for at least 20 minutes, sequentially closing the first valve and the second valve, opening a third valve to completely discharge water, and opening a bidirectional fan to drain water to obtain rivet electrical contacts after black spot treatment;
the reagent special for removing black spots comprises the following components: sulfonic acid, acetic acid and froth flotation agent, sulfonic acid: acetic acid: the mass ratio of the foaming flotation agent is as follows: (10-20): (5-10): (1-5),
the foaming flotation agent comprises the following components in percentage by mass of 10-20:5-10: 10-20 parts of sodium dodecyl sulfate, 5-10 parts of fatty alcohol polyoxyethylene ether sodium sulfate and the balance of water. The method comprises the steps of carrying out a first treatment on the surface of the
The dosage of the reagent special for black spots is 50-100ml, and the mass of the treated rivet is 1-8kg.
The invention has the innovative mechanism and beneficial effects that:
the black spots are the most common defects of the rivet working surface, belong to dust pollution, are gradually deposited to the deep layer once adsorbed to the working surface, reach a certain depth, and can only treat the surface of the working surface by polishing, so that the deep black spots are difficult to remove at all, and therefore, the success rate of the common polishing process for removing the black spots is very low.
(1) Dry vibration: through long-term test, the black spots gradually flow out from the deep layer to the surface layer only through vibration, and the black spots are sticky, so that the large black spot attaching area is large and is difficult to separate from the working surface under the action of the sticky effect, and the small black spots can be separated from the surface of the working surface when the air is pumped outwards during dry vibration and the large black spots are difficult to separate.
(2) Wet vibration: after dry vibration, water and a reagent special for black spots are injected into the device, wherein the sulfonic acid and the acetic acid are used for removing viscosity, so that the black spots are separated from the working surface, and the black spots are likely to redeposit under the action of gravity after being separated, particularly large black spots, and the foaming agent plays a role at the moment to coat the black spots, float the foam under the action of buoyancy and discharge the foam under the action of water flow, so that the cleaning effect is achieved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that it is within the scope of the invention to one skilled in the art to obtain other drawings from these drawings without inventive faculty.
FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present invention more apparent.
Device embodiment
As shown in fig. 1, the special removing device comprises a barrel 1, a vibrating pump 2 for driving the barrel to vibrate at high frequency is arranged on the barrel 1, a screen 3 for placing rivet electrical contacts is fixedly arranged in the barrel 1, the barrel is divided into an upper cavity 11 and a lower cavity 12 by the screen 3, the upper cavity 11 of the barrel 1 is detachably, hermetically and fixedly provided with a sealing cover 4, an exhaust tube 31 led out of the barrel through a pipeline is further connected above the screen 3, the outer end of the exhaust tube 31 is an exhaust port, a lower partition plate 5 is arranged below the screen 3 at intervals, a working cavity 13 is formed in the area between the lower partition plate 5 and the screen 3 corresponding to the lower cavity 12, a discharge pipe 51 connected to the outside of the barrel through a pipeline is arranged on the lower partition plate 5, and a bidirectional fan 52 is connected on the discharge pipe 51 in a coiled mode.
In addition, the cylinder body 1 is provided with a liquid inlet pipe 14 communicated with the working cavity 13, and the liquid inlet pipe is provided with a first valve 15; a liquid discharge pipe 16 communicated with the upper cavity 11 is arranged on the cylinder body 1, a second valve 17 is arranged on the liquid discharge pipe, and the opening position of the liquid discharge pipe 16 communicated with the upper cavity 11 is positioned above a certain height interval of the screen 3; this gap height facilitates the liquid level rising so as to further enhance the black spot removing ability by using buoyancy, and the discharge pipe 51 is provided with a third valve 53.
In addition, in the arrangement, a discharge hole 18 is formed in the position, opposite to the upper side wall of the screen, of the cylinder 1, and a fourth valve 19 is arranged on the discharge hole.
The vibration output frequency of the vibration pump is set to be adjustable, and the frequency adjusting range is 1-50HZ.
Process examples
Taking a conventional rivet electrical contact as an example, the invention performs black point removal, and comprises the following steps:
(1) Setting the first valve 15, the second valve 17 and the third valve 53 to be in a closed state, opening the sealing cover 4 to place the rivet electrical contact on the screen 3, opening the third valve 53 after closing the sealing cover 4, starting the bidirectional fan 52 and the vibration pump 2, performing dry vibration on the rivet electrical contact by utilizing vibration transmitted to the screen 3 by the vibration pump 2, precipitating black spots on a working surface, pumping away by the bidirectional fan, continuing the dry vibration and the ventilation for at least 20 minutes, and then sequentially closing the third valve 53, the bidirectional fan 52 and the vibration pump 2;
the black spots are divided according to the size, wherein the black spots are small black spots smaller than 100 mu m and large black spots larger than 100 mu m, most small black spots are pumped away by a fan during dry vibration, and all large black spots and a small part of small black spots remain on a working surface.
(2) Opening a sealing cover 4, adding a reagent special for removing black spots, opening a first valve 15, introducing water into the device through a water inlet, starting a vibration pump 2 when the water level reaches the position of a screen 3, opening the second valve when the water level reaches a second valve 17, enabling water to flow out of the second valve 17, circularly entering the second valve from the first valve 15, performing flotation wet vibration, continuously performing wet vibration for at least 20 minutes, sequentially closing the first valve 15 and the second valve 17, opening a third valve 53 to completely discharge water, and opening a bidirectional fan 52 to blow dry water to obtain rivet electrical contacts after black spot treatment;
wet vibration: blowing air into water by using a bidirectional fan, generating a large amount of foam by using a reagent special for black spots, coating the black spots in the foam generating process, coating all the black spots by the foam, discharging the foam along with the water flow direction, achieving the purpose of removing the black spots,
the reagent special for removing black spots comprises the following components: sulfonic acid, acetic acid and froth flotation agent, sulfonic acid: acetic acid: the mass ratio of the foaming flotation agent is as follows: (10-20): (5-10): (1-5),
the foaming flotation agent comprises sodium dodecyl sulfate and sodium fatty alcohol polyoxyethylene ether sulfate in a mass ratio of 10-20:5-10;
the dosage of the reagent special for black spots is 50-100ml, and the mass of the treated rivet is 1-8kg.
The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.
Claims (1)
1. A special removing device of rivet electrical contact working face black spot, its characterized in that: the high-frequency vibration type electric rivet feeding device comprises a barrel, wherein a vibration pump for driving the barrel to vibrate at high frequency is arranged on the barrel, a screen for placing an electric rivet contact is fixedly arranged in the barrel, the screen divides the barrel into an upper cavity and a lower cavity, the upper cavity of the barrel is detachably, hermetically and fixedly provided with a sealing cover, an exhaust pipe led out of the barrel through a pipeline is further connected above the screen, the outer end of the exhaust pipe is an air outlet, a lower partition plate is arranged below the screen at intervals, the lower cavity corresponds to a region between the lower partition plate and the screen to form a working cavity, a discharge pipe connected to the outside of the barrel through a pipeline is arranged on the lower partition plate, and a bidirectional fan is connected to the upper disc of the discharge pipe;
the cylinder body is provided with a liquid inlet pipe communicated with the working cavity, and the liquid inlet pipe is provided with a first valve;
the cylinder body is provided with a liquid discharge pipe communicated with the upper cavity, the liquid discharge pipe is provided with a second valve, and the position of the liquid discharge pipe communicated with the upper cavity is positioned above a certain height interval of the screen;
a third valve is arranged on the discharge pipe;
a discharge hole is formed in the position, opposite to the upper side wall of the screen, of the cylinder body, and a fourth valve is arranged on the discharge hole;
the vibration output frequency of the vibration pump is set in an adjustable way, and the frequency adjusting range is 1-50HZ;
the special black spot removing device comprises the following using steps:
(1) Setting the first valve, the second valve and the third valve to be in a closed state, opening a sealing cover to place the rivet electrical contact on a screen, opening the third valve after closing the sealing cover, starting a bidirectional fan and a vibration pump, utilizing vibration transmitted to the screen by the vibration pump to perform dry vibration on the rivet electrical contact, separating black spots on a working surface, pumping away by the bidirectional fan, continuously performing dry vibration and ventilation for at least 20 minutes, and then sequentially closing the third valve, the bidirectional fan and the vibration pump;
the black spots are divided according to the size, wherein the black spots are small black spots smaller than 100 mu m and large black spots larger than 100 mu m, most small black spots are pumped away by a fan during dry vibration, and all large black spots and a small part of small black spots remain on a working surface;
(2) Opening a sealing cover, adding a reagent special for removing black spots, opening a first valve to introduce water into the device through a water inlet, starting a vibration pump when the water level reaches a screen position, opening the second valve when the water level reaches a second valve, enabling water to flow out of the second valve and circularly enter from the first valve, performing floatation wet vibration, continuously performing wet vibration for at least 20 minutes, sequentially closing the first valve and the second valve, opening a third valve to completely discharge water, opening a bidirectional fan to blow water, and obtaining rivet electrical contacts after black spot treatment;
wet vibration: blowing air into water by using a bidirectional fan, generating a large amount of foam by using a special reagent for removing black spots, coating the black spots in the foam generation process, coating all the black spots by the foam, and discharging the foam along with the water flow direction so as to achieve the purpose of removing the black spots;
the special reagent for removing black spots comprises the following components: sulfonic acid, acetic acid, and froth flotation agent, wherein the sulfonic acid: acetic acid: the mass ratio of the foaming flotation agent is as follows: (10-20): (5-10): (1-5),
the foaming flotation agent comprises sodium dodecyl sulfate and sodium fatty alcohol polyoxyethylene ether sulfate in a mass ratio of 10-20:5-10;
the dosage of the special reagent for removing black spots is 50-100ml, and the mass of the treated rivet is 1-8kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456462.7A CN110252740B (en) | 2019-05-29 | 2019-05-29 | Special removing device and method for black spots on working face of rivet electrical contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456462.7A CN110252740B (en) | 2019-05-29 | 2019-05-29 | Special removing device and method for black spots on working face of rivet electrical contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110252740A CN110252740A (en) | 2019-09-20 |
| CN110252740B true CN110252740B (en) | 2024-02-13 |
Family
ID=67915876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910456462.7A Active CN110252740B (en) | 2019-05-29 | 2019-05-29 | Special removing device and method for black spots on working face of rivet electrical contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110252740B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB838581A (en) * | 1957-07-10 | 1960-06-22 | Pfenningsberg Gmbh Maschfab | Process and apparatus for cleaning articles by ultra-sonic vibrations |
| FR2217935A5 (en) * | 1973-02-15 | 1974-09-06 | Oxy Metal Finishing Corp | |
| CN106903126A (en) * | 2017-03-13 | 2017-06-30 | 大连理工大学 | A kind of auto-cleaning method of optical element solvent flashing recycling |
| CN107378741A (en) * | 2017-07-07 | 2017-11-24 | 福达合金材料股份有限公司 | Surface treatment method, abrasive material and the abrasive material preparation method of soil for electrical contact |
| KR101859898B1 (en) * | 2018-02-02 | 2018-05-18 | 최일호 | Fine dust reduction device |
| CN109616351A (en) * | 2018-11-23 | 2019-04-12 | 安徽银点电子科技有限公司 | A kind of electrical contact surface processing device |
| CN208788155U (en) * | 2018-08-24 | 2019-04-26 | 福达合金材料股份有限公司 | It is a kind of for removing the magnetic force burnishing device of soil for electrical contact surface defect |
| CN210253385U (en) * | 2019-05-29 | 2020-04-07 | 福达合金材料股份有限公司 | Special removing device for black spots on working surface of rivet electrical contact |
-
2019
- 2019-05-29 CN CN201910456462.7A patent/CN110252740B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB838581A (en) * | 1957-07-10 | 1960-06-22 | Pfenningsberg Gmbh Maschfab | Process and apparatus for cleaning articles by ultra-sonic vibrations |
| FR2217935A5 (en) * | 1973-02-15 | 1974-09-06 | Oxy Metal Finishing Corp | |
| CN106903126A (en) * | 2017-03-13 | 2017-06-30 | 大连理工大学 | A kind of auto-cleaning method of optical element solvent flashing recycling |
| CN107378741A (en) * | 2017-07-07 | 2017-11-24 | 福达合金材料股份有限公司 | Surface treatment method, abrasive material and the abrasive material preparation method of soil for electrical contact |
| KR101859898B1 (en) * | 2018-02-02 | 2018-05-18 | 최일호 | Fine dust reduction device |
| CN208788155U (en) * | 2018-08-24 | 2019-04-26 | 福达合金材料股份有限公司 | It is a kind of for removing the magnetic force burnishing device of soil for electrical contact surface defect |
| CN109616351A (en) * | 2018-11-23 | 2019-04-12 | 安徽银点电子科技有限公司 | A kind of electrical contact surface processing device |
| CN210253385U (en) * | 2019-05-29 | 2020-04-07 | 福达合金材料股份有限公司 | Special removing device for black spots on working surface of rivet electrical contact |
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| Publication number | Publication date |
|---|---|
| CN110252740A (en) | 2019-09-20 |
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