CN109930141B - Nickel-melting gold wire - Google Patents
Nickel-melting gold wire Download PDFInfo
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- CN109930141B CN109930141B CN201910287082.5A CN201910287082A CN109930141B CN 109930141 B CN109930141 B CN 109930141B CN 201910287082 A CN201910287082 A CN 201910287082A CN 109930141 B CN109930141 B CN 109930141B
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- groove
- nickel
- groove body
- workpiece
- tank
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- 238000002844 melting Methods 0.000 title claims abstract description 35
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 230000009471 action Effects 0.000 claims abstract description 24
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 41
- 230000008018 melting Effects 0.000 claims description 24
- 229910052759 nickel Inorganic materials 0.000 claims description 21
- 230000000903 blocking effect Effects 0.000 claims description 15
- 238000010992 reflux Methods 0.000 claims description 10
- 229910052737 gold Inorganic materials 0.000 claims description 8
- 239000010931 gold Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000013461 design Methods 0.000 abstract description 7
- 239000003814 drug Substances 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- MSNOMDLPLDYDME-UHFFFAOYSA-N gold nickel Chemical compound [Ni].[Au] MSNOMDLPLDYDME-UHFFFAOYSA-N 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001096 P alloy Inorganic materials 0.000 description 1
- VIEPBHVFZWHJPZ-UHFFFAOYSA-N [Ni]=S.[Au] Chemical compound [Ni]=S.[Au] VIEPBHVFZWHJPZ-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Chemically Coating (AREA)
Abstract
The invention provides a nickel-melting gold wire, which comprises a plurality of groove body devices and a conveying device, wherein the groove body devices are provided with action grooves which penetrate through the groove body devices along the length direction, and the action grooves of the groove body devices are aligned and connected to form continuous through grooves; the conveying device drives the workpiece to move in the through groove along the extending direction of the through groove. By the design, the workpiece is located in the action groove of the groove body device in the whole treatment process, firstly, the contact area and time of the workpiece and air are reduced, the quality of the workpiece is ensured, secondly, the dripping and pollution of liquid medicine can be avoided, the time for lifting and moving up and down of the workpiece is saved, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of PCB processing equipment, in particular to a nickel-plated gold wire.
Background
Electroless nickel gold, also known as electroless nickel gold, is prepared by chemically replacing palladium on the surface of copper, then chemically plating a nickel-phosphorus alloy layer on the basis of palladium core, and then plating a gold layer on the surface of nickel by the replacement reaction. The production process does not need to be conducted through current, and is therefore also called electroless nickel gold. Compared with the traditional electroplating mode, the nickel-plated gold has the advantages of good dispersibility of a nickel-gold layer, good welding and multiple welding performances, good wire Bonding (TSBond or UBond) performance, compatibility with various soldering fluxes and the like, and is an excellent copper surface protection layer. And are therefore increasingly favored by a wide range of customers.
The existing nickel-gold wire generally adopts gantry type nickel-gold equipment. The gantry nickel-gold melting equipment mainly comprises a chemical tank, a track, a portal frame, a lifting motor and a hanging basket. The chemical tank comprises a cleaning tank, a rinsing tank, a microetching tank, a nickel melting tank, a gold melting tank, a rinsing tank and the like which are arranged along the production line and are mutually independent. The track is arranged beside the chemical tank, and the portal frame is driven by the driving motor to move along the track. The lifting motor is arranged on the portal frame and connected with the hanging basket to drive the hanging basket to move up and down. The hanging basket is internally provided with a workpiece. When the workpiece is processed, the hanging basket is driven by the portal frame and the lifting motor to enter each chemical tank one by one.
In the process of entering each chemical tank one by one, the hanging basket needs to be continuously lifted and put down and moves between different chemical tanks under the drive of the portal frame. The design has certain defects: firstly, the workpieces in the hanging basket are exposed to the outside for a long time, so that the workpieces react with air for a long time and in a large area, and the processing quality of the workpieces is influenced; secondly, the workpiece can cause waste and pollution of liquid medicine dripping when moving between the chemical tanks.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of influencing the quality of the workpiece, polluting and wasting the liquid medicine and the like caused by the movement of the workpiece outside the chemical tank body in the prior art, thereby providing the nickel-melting gold wire.
The invention provides a nickel-plated gold wire, which comprises the following components:
The groove body devices are provided with action grooves which penetrate through the groove body devices along the length direction, and the action grooves of the groove body devices are aligned and connected to form continuous through grooves;
and the conveying device drives the workpiece to move in the through groove along the extending direction of the through groove.
Optionally, the plurality of groove body devices comprise a pretreatment groove, a nickel melting groove, a gold melting groove and a post-treatment groove, and a blocking structure for preventing groove cross is arranged between the adjacent groove body devices of different types.
Optionally, the blocking structure includes a blocking plate disposed between adjacent groove body devices, and a workpiece gap allowing the workpiece to pass through is formed on the blocking plate.
Optionally, two ends of the nickel melting groove are provided with reflux sections with set extension lengths; and the two ends of the reflux section are provided with baffle plates, and the bottom of the reflux section is connected with a reflux pipeline.
Optionally, the nickel melting tank includes:
The tank body is provided with at least two action tanks;
the driving device drives the groove body to move so that the acting groove moves to a working position aligned with and communicated with the through groove in sequence.
Optionally, the tank body is formed with at least two action grooves extending in parallel in a horizontal plane, and the driving device comprises a transverse driving device for driving the tank body to slide along a horizontal direction perpendicular to the extending direction of the action grooves and a jacking device for driving the tank body to move in a height direction.
Optionally, the nickel melting tank includes a base, a mounting bracket for mounting the tank body, and a carriage arranged between the mounting bracket and the base; the sliding frame is slidably arranged on the base along the horizontal direction perpendicular to the extending direction of the acting groove, and the transverse driving device comprises a first threaded rod arranged between the sliding frame and the base, a first sprocket arranged on the first threaded rod, a first driving motor arranged on the base and a first chain connecting the first sprocket and the first driving motor; the first threaded rod extends along a horizontal direction perpendicular to the extending direction of the acting groove.
Optionally, the jacking device includes a plurality of second threaded rods vertically extending between the carriage and the mounting bracket, second chain wheels arranged on the second threaded rods, second chains surrounding and connecting all the second chain wheels, and a second driving motor mounted on the base; the device also comprises a third sprocket wheel arranged on one of the second threaded rods and a third chain connected between the third sprocket wheel and the second driving device.
Optionally, the transverse driving device comprises a first cylinder arranged between the carriage and the base, and the jacking device comprises a second cylinder arranged between the carriage and the mounting bracket.
Optionally, the conveying device comprises a conveying belt device, and a roll-up plate unreeling machine and a roll-up plate reeling machine which are arranged at two ends of the conveying belt device; the conveyor belt assembly includes a conveyor belt and a clamp mounted to the conveyor belt for clamping the workpiece, the conveyor belt including a pass-through section extending along the pass-through slot in the pass-through slot.
The technical scheme of the invention has the following advantages:
1. The invention provides a nickel-plated gold wire, which comprises a plurality of groove body devices and a conveying device, wherein the groove body devices are provided with action grooves which penetrate through the groove body devices along the length direction, and the action grooves of the groove body devices are aligned and connected to form continuous through grooves; the conveying device drives the workpiece to move in the through groove along the extending direction of the through groove. By the design, the workpiece is located in the action groove of the groove body device in the whole treatment process, firstly, the contact time and the contact area of the workpiece and air are reduced, the quality of the workpiece is ensured, secondly, the dripping and pollution of liquid medicine can be avoided, the time for lifting and moving the workpiece up and down is saved, and the production efficiency is improved.
2. The invention provides a nickel-melting gold wire, which comprises a groove body and a driving device, wherein the groove body is provided with at least two action grooves, and the driving device drives the groove body to move so that the action grooves of the groove body sequentially move to work positions aligned with and communicated with the through grooves. The design can realize the quick replacement of the nickel melting tank, thereby avoiding the production efficiency reduction caused by the maintenance of the nickel melting tank or the replacement of the liquid medicine or the failure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a nickel-plated gold wire according to a first embodiment of the present invention;
FIG. 2 is a partial schematic view of the nickel sulfide gold wire shown in FIG. 1;
FIG. 3 is a schematic structural view of a nickel melting tank according to the first embodiment of the present invention;
FIG. 4 is a partial schematic view of a body region of the nickel-plated tank shown in FIG. 3;
FIG. 5 is a partial schematic view of the drive device area in the nickel bath of FIG. 3;
Reference numerals illustrate:
1-coil plate placing machine, 2-pretreatment tank, 3-nickel melting tank, 4-gold melting tank, 5-post treatment tank, 6-coil plate collecting machine, 7-through tank, 8-conveyor belt device, 9-action tank, 10-return pipeline, 11-carriage, 12-base, 13-tank body, 14-mounting bracket, 15-return section, 16-baffle plate, 17-third chain, 18-second driving motor, 19-first driving motor, 20-second chain, 21-first threaded rod, 22-first chain and 23-second threaded rod.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 to 5 illustrate an embodiment of a nickel-plated gold wire provided by the present invention.
Referring to fig. 1, the nickel-melting wire includes a plurality of tank devices including a pretreatment tank 2, a nickel-melting tank 3, a gold-melting tank 4 and a post-treatment tank 5. In this embodiment, the pretreatment tank 2 includes a first cleaning tank, a first hot water tank, a first water tank, a second water tank, a microetching tank, a third water tank, a fourth water tank, a prepreg tank, an activation tank, a fifth water tank, a sixth water tank, a post-leaching tank, a seventh water tank, and an eighth water tank, which are sequentially provided. A ninth washing tank and a tenth washing tank are arranged between the nickel melting tank 3 and the gold melting tank 4. The post-treatment tank 5 includes an eleventh washing tank, a twelfth washing tank, a hole sealing tank, a thirteenth washing tank, a fourteenth washing tank, and a drain washing tank, which are sequentially provided.
Obviously, other tank body devices besides the nickel melting tank 3 and the gold melting tank 4 can be determined according to actual processes.
As can be seen from fig. 2 and 3, the slot means has a longitudinal through-going active slot 9, and several slot means active slots 9 are aligned to form a continuous through-going slot 7. And a blocking structure for preventing the cross grooves is arranged between the adjacent groove body devices of different types. The blocking structure comprises a blocking plate 16 arranged between adjacent groove body devices, and a workpiece gap allowing a workpiece to pass through is formed on the blocking plate 16.
The nickel-melting tank 3 of the nickel-melting gold wire adopts a replaceable plating tank design. Specifically:
Referring to fig. 3 to 5, the nickel melting tank 3 includes a base 12, a tank body 13, a mounting bracket 14, a carriage 11, and a driving device. The tank body 13 is formed with two action grooves 9 extending in parallel in a horizontal plane. The action groove 9 penetrates the groove 7 body in the longitudinal direction of the groove body 13. The mounting bracket 14 is disposed at the bottom of the tank body 13, and is used for bearing and fixing the tank body 13. The carriage 11 is slidably mounted on the base 12 in a horizontal direction perpendicular to the extending direction of the operation groove 9 by a slide rail structure. The drive means comprise lifting means for driving the mounting bracket 14 in a height direction and transverse drive means for driving the carriage 11 to slide along the slide rail structure relative to the base 12.
The lateral drive means comprise a first threaded rod 21 arranged between the carriage 11 and the base 12, a first sprocket arranged on the first threaded rod 21, a first drive motor 19 mounted on the base 12 and a first chain 22 connecting the first sprocket and the first drive motor 19.
The jacking means comprise a second threaded rod 23, a second chain 20, a third chain 17 and a second drive motor 18. The second threaded rods 23 are arranged between the carriage 11 and the mounting bracket 14 along the vertical direction, four corresponding four corners of the mounting bracket 14 are provided, and each second threaded rod 23 is provided with a second sprocket. The second chain 20 is a closed chain enclosing all the second sprockets inside, so designed that synchronous rotation of all the second threaded rods 23 is achieved. The second drive motor 18 is mounted on the slide and the jacking device further comprises a third sprocket arranged on one of the second threaded rods 23 and a third chain connecting the third sprocket to the second drive.
In this embodiment, two sets of mounting brackets 14 and a carriage 11 are disposed along the length direction of the slot body 13, and a first chain 22 and a third chain 17 corresponding to the two sets of mounting brackets 14 and the carriage 11 are driven by the same first driving motor 19 and second driving motor 18 respectively.
It is apparent that only one set of the mounting bracket 14 and the carriage 11, or a plurality of sets of the mounting bracket 14 and the carriage 11 may be employed depending on the length of the tank body 13. The number of the second threaded rods 23 in the present invention may also be determined according to the shape, weight, etc. of the tank body 13.
The two ends of the nickel melting tank 3 are provided with reflux sections 15 with set length extension, the two ends of the reflux sections 15 are provided with baffle plates 16, and the bottom is connected with a reflux pipeline 10. The baffle 16 has a workpiece gap that allows the workpiece to pass through. By arranging the backflow section 15 and the baffle plate 16, the blocking between adjacent electroless plating tanks of different types is realized, and the occurrence of cross tanks is avoided.
Under the action of the driving device, the driving groove body 13 moves to enable the acting groove 9 on the driving groove body to sequentially move to the working position aligned with and communicated with the through groove 7, so that the nickel melting groove 3 can be replaced. The design can realize the quick replacement of the nickel bath 3, thereby avoiding the reduction of the production efficiency caused by the maintenance of the nickel bath 3 or the replacement of the liquid medicine or the failure.
The conveying device in the nickel-melting gold wire is in a conveying belt form and comprises a conveying belt device 8, and a reel type plate unreeling machine 1 and a reel type plate reeling machine 6 which are arranged at two ends of the conveying belt device 8; the conveyor belt device 8 comprises a conveyor belt and a conveyor belt mounted clamp for clamping the workpiece, the conveyor belt comprising a through section extending in the through slot 7 in the direction of extension of the through slot 7. The movement of the conveyor belt drives the workpiece to move in the through groove 7. Realizing the processing of the workpiece.
As another embodiment, other chemical aqueducts of the nickel-plated gold wire may be of exchangeable design like the nickel-plated tank 3.
As another embodiment, the lateral driving means and the jacking means may be replaced by air cylinders or hydraulic cylinders, i.e. comprising a first air cylinder or hydraulic cylinder driving the sliding of the carriage 11 and a second air cylinder or hydraulic cylinder driving the movement of the mounting bracket 14.
As another embodiment, three or more operation grooves 9 extending in parallel in the horizontal plane are provided in the groove body 13.
As another embodiment, two intersecting and height-staggered action grooves 9 are formed on the groove body 13, and the driving device comprises a rotation driving device for driving the groove body 13 to rotate and a lifting driving device for moving in the height direction.
As another embodiment, the blocking structure may be an elastic door structure which is normally closed under the action of an elastic member, is stretched under the pushing of the workpiece, and allows the workpiece to pass through.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (7)
1. A nickel-plated gold wire, comprising:
The device comprises a plurality of groove body devices, wherein the groove body devices are provided with action grooves (9) penetrating through the groove body devices along the length direction, and the action grooves (9) of the groove body devices are aligned and connected to form continuous penetrating grooves (7);
the conveying device drives the workpiece to move in the through groove (7) along the extending direction of the through groove (7);
The plurality of groove body devices comprise a pretreatment groove (2), a nickel melting groove (3), a gold melting groove (4) and a post-treatment groove (5), and blocking structures for preventing groove cross are arranged between the adjacent groove body devices of different types; the blocking structure is arranged as an elastic door structure;
the blocking structure comprises a blocking plate (16) arranged between the adjacent groove body devices, and a workpiece gap allowing the workpiece to pass through is formed in the blocking plate (16);
Two ends of the nickel melting groove (3) are provided with reflux sections (15) with set extension lengths; the two ends of the reflux section (15) are provided with baffle plates (16), and the bottom is connected with a reflux pipeline (10).
2. The nickel-plated gold wire according to claim 1, wherein the nickel-plated groove (3) comprises:
A tank body (13) having at least two of the action grooves (9);
And the driving device drives the groove body (13) to move so as to enable the acting groove (9) to sequentially move to a working position aligned with and communicated with the through groove (7).
3. The nickel-plated gold wire according to claim 2, wherein: the groove body (13) is formed with at least two action grooves (9) which extend in parallel in a horizontal plane, and the driving device comprises a transverse driving device for driving the groove body (13) to slide along a horizontal direction perpendicular to the extending direction of the action grooves (9) and a jacking device for driving the groove body (13) to move in the height direction.
4. The nickel-plated gold wire according to claim 3, wherein: the nickel melting tank (3) comprises a base (12), a mounting bracket (14) for mounting the tank body (13), and a sliding frame (11) arranged between the mounting bracket (14) and the base (12); the sliding frame (11) is slidably mounted on the base (12) along a horizontal direction perpendicular to the extending direction of the acting groove (9), and the transverse driving device comprises a first threaded rod (21) arranged between the sliding frame (11) and the base (12), a first sprocket wheel arranged on the first threaded rod (21), a first driving motor (19) mounted on the base (12) and a first chain (22) connecting the first sprocket wheel and the first driving motor (19); the first threaded rod (21) is arranged to extend in a horizontal direction perpendicular to the extending direction of the action groove (9).
5. The nickel-plated gold wire according to claim 4, wherein: the jacking device comprises a plurality of second threaded rods (23) which are arranged between the sliding frame (11) and the mounting bracket (14) and vertically extend, second chain wheels which are arranged on the second threaded rods (23), second chains (20) which are connected with all the second chain wheels in a surrounding mode, and a second driving motor (18) which is mounted on the base (12); the device also comprises a third sprocket wheel arranged on one of the second threaded rods (23) and a third chain (17) connected between the third sprocket wheel and the second driving device.
6. The nickel-plated gold wire according to claim 4, wherein: the transverse driving device comprises a first air cylinder arranged between the sliding frame (11) and the base (12), and the jacking device comprises a second air cylinder arranged between the sliding frame (11) and the mounting bracket (14).
7. The nickel-plated gold wire according to any one of claims 1-6, wherein: the conveying device comprises a conveyor belt device (8), and a roll plate unreeling machine (1) and a roll plate reeling machine (6) which are arranged at two ends of the conveyor belt device (8); the conveyor belt arrangement (8) comprises a conveyor belt and a clamp for clamping the workpiece, which is mounted on the conveyor belt, the conveyor belt comprising a through section extending along the through slot (7) in the through slot (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910287082.5A CN109930141B (en) | 2019-04-10 | 2019-04-10 | Nickel-melting gold wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910287082.5A CN109930141B (en) | 2019-04-10 | 2019-04-10 | Nickel-melting gold wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109930141A CN109930141A (en) | 2019-06-25 |
| CN109930141B true CN109930141B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910287082.5A Active CN109930141B (en) | 2019-04-10 | 2019-04-10 | Nickel-melting gold wire |
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| Country | Link |
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| CN (1) | CN109930141B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114630496A (en) * | 2020-12-02 | 2022-06-14 | 黄信翔 | Electroless nickel-gold process capable of reducing chemical treatment steps and system thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004099957A (en) * | 2002-09-06 | 2004-04-02 | Yutaka Sato | Dam type continuous immersion device |
| CN106835088A (en) * | 2017-03-13 | 2017-06-13 | 深圳市化讯应用材料有限公司 | A kind of chemical nickel and gold production line and production technology |
| CN208071809U (en) * | 2018-02-24 | 2018-11-09 | 深圳市盛鸿辉科技有限公司 | A kind of PCB chemical nickel golds production line |
| CN210736883U (en) * | 2019-04-10 | 2020-06-12 | 昆山东威科技股份有限公司 | Nickel-plated gold wire |
-
2019
- 2019-04-10 CN CN201910287082.5A patent/CN109930141B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004099957A (en) * | 2002-09-06 | 2004-04-02 | Yutaka Sato | Dam type continuous immersion device |
| CN106835088A (en) * | 2017-03-13 | 2017-06-13 | 深圳市化讯应用材料有限公司 | A kind of chemical nickel and gold production line and production technology |
| CN208071809U (en) * | 2018-02-24 | 2018-11-09 | 深圳市盛鸿辉科技有限公司 | A kind of PCB chemical nickel golds production line |
| CN210736883U (en) * | 2019-04-10 | 2020-06-12 | 昆山东威科技股份有限公司 | Nickel-plated gold wire |
Non-Patent Citations (1)
| Title |
|---|
| 半导体晶圆化学镍/金UBM工艺与设备;刘勇;;电子工业专用设备(第12期);7-13 * |
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