CN116426991A - Pretreatment flow plating method for long workpiece - Google Patents
Pretreatment flow plating method for long workpiece Download PDFInfo
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- CN116426991A CN116426991A CN202310430419.XA CN202310430419A CN116426991A CN 116426991 A CN116426991 A CN 116426991A CN 202310430419 A CN202310430419 A CN 202310430419A CN 116426991 A CN116426991 A CN 116426991A
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- 238000007747 plating Methods 0.000 title claims abstract description 212
- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000004140 cleaning Methods 0.000 claims abstract description 142
- 238000005507 spraying Methods 0.000 claims description 43
- 239000000243 solution Substances 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 229910052709 silver Inorganic materials 0.000 claims description 13
- 239000004332 silver Substances 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 12
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 229910052725 zinc Inorganic materials 0.000 claims description 9
- 239000011701 zinc Substances 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 6
- 238000002386 leaching Methods 0.000 claims description 6
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- 239000008213 purified water Substances 0.000 claims description 2
- 238000002203 pretreatment Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 230000008569 process Effects 0.000 abstract description 10
- 238000007781 pre-processing Methods 0.000 abstract description 5
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 15
- 238000010926 purge Methods 0.000 description 7
- 230000001680 brushing effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000007598 dipping method Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- -1 hydrogen ions Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/04—Electroplating with moving electrodes
- C25D5/06—Brush or pad plating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemically Coating (AREA)
Abstract
The application provides a pretreatment flow plating method of a long workpiece, which relates to the technical field of surface treatment of the long workpiece, wherein the front end of the long workpiece is provided with a blind hole arranged along the axial direction, and the method comprises the following steps: hoisting a long workpiece to a bracket of a pretreatment station, and horizontally entering the pretreatment station at the front end of the long workpiece; sequentially preprocessing the blind holes of the long workpiece for multiple times, and cleaning the blind holes of the long workpiece; and moving the long workpiece to a flow plating station, and performing flow plating on the blind holes of the long workpiece. The pretreatment station and the flow plating station are arranged side by side, and the horizontally placed long workpiece is subjected to pretreatment and flow plating; the front end of the long workpiece enters a pretreatment station in a slightly lower inclination mode, and pretreatment is carried out for a plurality of times at one pretreatment station; and then horizontally moving the long workpiece to an adjacent flow plating station, and carrying out flow plating on the inner wall of the blind hole. The operation process is automatically controlled, the quality of pretreatment and flow plating is ensured, the production efficiency is improved, the labor intensity is reduced, and the operation environment is improved; the horizontal hoisting is not limited by the length of the long workpiece any more, and the requirements of products with different lengths are met.
Description
Technical Field
The application relates to the technical field of surface treatment of long workpieces, in particular to a pretreatment flow plating method of a long workpiece.
Background
When the surface of the existing high-voltage long conductor is plated with metal, the inner wall of the blind hole at the end part of the existing high-voltage long conductor is generally plated with a brush. Because the length of the high-voltage long conductor is longer, when the blind hole is brush plated, the high-voltage long conductor is lifted vertically, and the part with the blind hole at the end part is vertically placed in the solution tank for pretreatment in sequence, so that the blind hole is subjected to pretreatment processes in sequence, and the inner wall of the blind hole is subjected to processes such as oil removal, rust removal and the like, so that the inner wall of the blind hole is clean. After the pretreatment is finished, the blind hole is manually brushed and plated so as to plate a needed metal layer on the inner wall of the blind hole.
The operation method has several defects at present, namely, when the length of the high-voltage long conductor is too long, the space for vertically lifting the high-voltage long conductor in a workshop is insufficient, and the length of the high-voltage long conductor is limited; secondly, during pretreatment, the high-voltage long conductor is lifted from one solution tank and sequentially put into a subsequent solution tank for pretreatment, so that the efficiency is low and the labor intensity of operators is high; thirdly, the brush plating is performed manually, so that the quality of the brush plating cannot be accurately controlled; the three defects ensure that the whole brush plating quality, production efficiency and production environment of the high-voltage long conductor cannot be ensured.
Disclosure of Invention
The embodiment of the application aims to provide a pretreatment flow plating method for long workpieces, which adopts an automatic flow plating operation mode to improve the flow plating quality of the inner walls of blind holes of the long workpieces, and simultaneously improves the production efficiency, reduces the labor intensity and reduces the pollution to the production environment.
In one aspect of the embodiments of the present application, a method for pretreating a long workpiece is provided, wherein the front end of the long workpiece has a blind hole arranged along an axial direction, and the method includes hoisting the long workpiece to a bracket of a pretreatment station, so that the front end of the long workpiece horizontally enters the pretreatment station;
sequentially carrying out pretreatment on the blind holes of the long workpieces for multiple times so as to clean the blind holes of the long workpieces;
moving the long workpiece to a flow plating station, and performing flow plating on the blind holes of the long workpiece; wherein, pretreatment station with flow plating station sets up side by side.
Optionally, the hoisting the long workpiece to a bracket of a pretreatment station, so that the front end of the long workpiece horizontally enters the pretreatment station, including:
the long workpiece is hoisted to a bracket of the pretreatment station, so that the heights of the front end of the long workpiece and a horizontal plane are smaller than those of the tail end of the long workpiece and the horizontal plane;
pushing the long workpiece to enable the front end of the long workpiece to enter the pretreatment station and be positioned.
Optionally, a cleaning head is arranged on the pretreatment station, and the cleaning head comprises a plurality of cleaning pipes which are integrally arranged to form a polygon;
the pretreatment is sequentially carried out on the blind holes of the long workpieces for a plurality of times so as to clean the blind holes of the long workpieces, and the pretreatment comprises the following steps:
the cleaning head stretches into the blind hole and drives the long workpiece to radially rotate;
and the cleaning pipes spray cleaning liquid towards the inner wall of the blind hole in sequence so as to pretreat the inner wall of the blind hole for a plurality of times.
Optionally, the cleaning head comprises six cleaning tubes arranged in a hexagon; the cleaning pipes spray cleaning liquid towards the inner wall of the blind hole in sequence, so as to carry out pretreatment on the inner wall of the blind hole for a plurality of times, and the cleaning pipes comprise:
spraying weak alkali liquor into the blind hole by the first cleaning pipe for surface adjustment, wherein the temperature of the weak alkali liquor is 50-60 ℃, and closing the first cleaning pipe after spraying for 5-6 min;
spraying strong acid liquid into the blind hole by the second cleaning pipe to emit light, and closing the second cleaning pipe after spraying for 0.5-1 min;
spraying strong alkali liquor into the blind hole by the third cleaning pipe for zinc leaching, and closing the third cleaning pipe after spraying for 1.5-2 min;
spraying strong acid liquid into the blind hole by the fourth cleaning pipe to dezincifize, and closing the fourth cleaning pipe after spraying for 1.5-2 min;
fifthly, injecting strong alkali liquor into the blind holes by the cleaning pipe to carry out secondary zinc leaching, wherein the injection time is 1.5-2 min; or spraying chemical nickel liquid into the blind hole by the fifth cleaning pipe, wherein the temperature of the chemical nickel liquid is 37-42 ℃, and the spraying time is 1.5-2 min; and closing a fifth cleaning pipe after the spraying is finished.
Optionally, the cleaning pipes spray cleaning liquid toward the inner wall of the blind hole in sequence, so as to perform multiple pretreatment on the inner wall of the blind hole, including:
and after each pretreatment, washing with water, and spraying clean water or purified water into the blind holes by the sixth cleaning pipe, wherein the cleaning time is 0.5-1 min.
Optionally, the flow plating station is provided with a flow plating head, and the flow plating head is connected with a flow plating pipe;
moving the long workpiece to a flow plating station, and performing flow plating on the blind holes of the long workpiece, wherein the flow plating comprises the following steps:
the flow plating head extends into the blind hole to contact with the inner wall of the blind hole, so as to drive the long workpiece to radially rotate;
and conveying plating solution to the flow plating head through the flow plating pipe, wherein the plating solution is subjected to flow plating between the flow plating head and the inner wall of the blind hole.
Optionally, the long workpiece is subjected to twice flow plating; moving the long workpiece to a flow plating station, and performing flow plating on the blind holes of the long workpiece, wherein the flow plating comprises the following steps:
moving the long workpiece to a primary flow plating station, and carrying out primary flow plating on the blind holes of the long workpiece;
and moving the long workpiece to a secondary flow plating station, and performing secondary flow plating on the blind holes of the long workpiece.
Optionally, the moving the long workpiece to a primary flow plating station performs primary flow plating on the blind hole of the long workpiece, including:
the primary plating solution is copper solution, the primary flow plating pipe inputs the copper solution to the primary flow plating head, the temperature of the copper solution is 50-60 ℃, and the flow plating time is 15-20 min.
Optionally, the moving the long workpiece to a secondary flow plating station, performing secondary flow plating on the blind hole of the long workpiece, including:
the secondary plating solution is silver solution, the silver solution is input to the secondary flow plating head by the secondary flow plating pipe, the temperature of the silver solution is 30-40 ℃, and the flow plating time is 50-55 min.
Optionally, after the primary flow plating and the secondary flow plating, washing the inside of the blind hole of the long workpiece respectively for 0.5-1 min.
According to the pretreatment flow plating method for the long workpiece, the pretreatment stations and the flow plating stations are arranged side by side, and the long workpiece placed horizontally is subjected to pretreatment and flow plating; firstly, the front end of a long workpiece is slightly lower, the tail end of the long workpiece is higher and obliquely enters a pretreatment station, and pretreatment is carried out for a plurality of times in one pretreatment station; specifically, a cleaning head formed by a plurality of cleaning pipes which are arranged into a polygon is adopted, and after the cleaning head stretches into a blind hole of a long workpiece, each cleaning pipe sequentially sprays different cleaning liquids into the blind hole in the state of autorotation of the long workpiece, so that a plurality of pretreatment steps are completed; after the pretreatment is completed, the long workpiece is horizontally moved to an adjacent flow plating station, and likewise, a flow plating head extends into a blind hole of the long workpiece, and the inner wall of the blind hole is subjected to flow plating under the rotation state of the long workpiece so as to form a plating layer on the inner wall of the blind hole. According to the method, the inner wall of the blind hole of the long workpiece is subjected to pretreatment and flow plating by adopting automatic equipment, the quality of pretreatment and flow plating can be ensured by automatic control in the operation process, the production efficiency is improved, the labor intensity is reduced, and the operation environment is improved; in addition, the horizontal hoisting of the work piece is not limited by the length of the long work piece any more, so that the production range is enlarged, and the production requirements of products with different lengths are met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for pre-processing and flow plating long workpieces provided in this embodiment;
FIG. 2 is a schematic view of the working state of the pretreatment station of the pretreatment flow plating method for long workpieces according to the embodiment;
FIG. 3 is a schematic view of a cleaning head of a pretreatment station of a pretreatment flow plating method for long workpieces provided in this embodiment;
fig. 4 is a schematic view of a pretreatment and flow plating integrated apparatus of a pretreatment flow plating method for a long workpiece provided in this embodiment.
Icon: 100-long workpieces; 100 a-blind hole; 200-brackets; 201-a pretreatment station; 201 a-cleaning head; 201 b-cleaning the tube; 202 a-a primary flow plating station; 202 b-a secondary flow plating station; 203-a rotating shaft; 204-recovery tank.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that is commonly put when the product of the application is used, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
It should also be noted that the terms "disposed," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically defined and limited; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Currently, when brushing plating is performed on the inner wall of a blind hole at the end part of a long workpiece such as a high-voltage long conductor, manual operation is mostly adopted; and vertically lifting the long workpiece, sequentially lowering the end parts into solution tanks for pretreatment, and brushing a metal layer on the inner wall of the blind hole in a manual brushing plating mode. The method has low efficiency, the brushing quality of the product cannot be ensured, and the operation is also limited by the length of a long workpiece, so that the operation is inconvenient.
In view of the above, in order to solve the above problems, the embodiment of the present application provides a pretreatment flow plating method for a long workpiece 100, which adopts a pretreatment and flow plating integrated device to perform pretreatment and flow plating automation on a blind hole 100a of the long workpiece 100, thereby improving the surface quality and production efficiency of product flow plating, and simultaneously, the pretreatment and flow plating of the long workpiece 100 with different lengths can be realized by the method, so that the length range of the product is enlarged, and the requirements of different customers are met.
Specifically, the front end of the long workpiece 100 has a blind hole 100a arranged along the axial direction, and the pretreatment flow plating method of the long workpiece 100 provided in the embodiment of the present application is to flow plate the inner wall of the blind hole 100a; referring to fig. 1, the method includes:
and S100, hoisting the long workpiece 100 to the bracket 200 of the pretreatment station 201, and horizontally entering the front end of the long workpiece 100 into the pretreatment station 201.
Fig. 2 shows a state diagram of the long workpiece 100 at the preprocessing station 201; firstly, a bracket 200 is placed on one side of a pretreatment station 201, a long workpiece 100 is hoisted to the bracket 200 on one side of the pretreatment station 201, the front end of the long workpiece 100 faces the pretreatment station 201, and the height of the front end and the horizontal plane of the long workpiece 100 is smaller than the height of the tail end and the horizontal plane of the long workpiece 100; in other words, the long workpiece 100 is horizontally and slightly obliquely placed on the bracket 200, the front end of the long workpiece 100 is provided with the blind hole 100a, and the front end is lower, so that when the blind hole 100a is subjected to pretreatment and brush plating, the pretreatment liquid and the brush plating liquid in the blind hole 100a directly flow from the blind hole 100a to the recovery groove 204 below the station, and the recoverable liquid is continuously recovered and recycled; the non-recoverable liquid is discharged as waste liquid.
The long workpiece 100 is then pushed so that the front end of the long workpiece 100 enters the pretreatment station 201 and is positioned.
After the front end of the long workpiece 100 is lower and is slightly inclined on the bracket 200, the front end of the long workpiece 100 is pushed into the pretreatment station 201 and then positioned, so that the position between the long workpiece 100 and the pretreatment station 201 is fixed, and all positions of the inner wall of the front end blind hole 100a can be pretreated.
In one implementation of the present application, the front end positioning of the long workpiece 100 may adopt a structure of a rotating shaft 203, where the rotating shaft 203 is vertically disposed at the front end of the pretreatment station 201, and when the front end of the long workpiece 100 is horizontally pushed forward to the pretreatment station 201, the front end of the long workpiece 100 abuts against the periphery of the rotating shaft 203, and the rotating shaft 203 blocks the continuous pushing of the long workpiece 100, so as to complete the positioning of the long workpiece 100.
It should be noted that, because the long workpiece 100 needs to rotate in the radial direction during the pretreatment and subsequent flow plating processes, the rotating shaft 203 is used as a positioning member to position the front end of the long workpiece 100, and the rotating shaft 203 is used as a positioning member to drive the rotating shaft 203 to rotate when the long workpiece 100 rotates, so as to reduce friction between the long workpiece 100 and the rotating shaft 203; if the positioning member cannot rotate, when the long workpiece 100 rotates, the long workpiece 100 is abutted against the positioning member, so that friction between the long workpiece 100 and the positioning member is increased, and the situation that the rotation of the long workpiece 100 stops or cannot rotate is caused by excessive friction.
Of course, other positioning methods besides the rotation shaft 203 may be used for positioning the long workpiece 100, and the positioning of the rotation shaft 203 is not limited.
In addition, when the long workpiece 100 is later plated, the positioning mode of the front end of the long workpiece 100 is consistent with that of the long workpiece 100 which is horizontally and slightly inclined at the front end of the long workpiece 100 in pretreatment, and the later plating is not repeated.
S110, sequentially preprocessing the blind holes 100a of the long workpiece 100 for a plurality of times to clean the blind holes 100a of the long workpiece 100.
As shown in fig. 3, a cleaning head 201a is disposed on the pretreatment station 201, the cleaning head 201a includes a plurality of cleaning pipes 201b integrally arranged to form a polygon, and ends of the plurality of cleaning pipes 201b are arranged to form a polygon; when each cleaning tube 201b is introduced with a cleaning solution for pretreatment and the blind hole 100a of the long workpiece 100 is pretreated, the cleaning head 201a extends into the blind hole 100a, and the cleaning solution is sprayed towards the blind hole 100a through each cleaning tube 201b in sequence to complete a plurality of pretreatment steps of the blind hole 100a.
After the ejection of one cleaning tube 201b is completed, the next cleaning tube 201b is restarted for the ejection process. The cleaning pump is independently provided for each cleaning pipe 201b, and control of each cleaning pipe 201b can be achieved independently. Thus, a plurality of pretreatment steps can be completed at one pretreatment station 201; compared with the prior art that the long workpiece 100 is sequentially hung into each cleaning tank, and the front end of the long workpiece 100 is immersed into the cleaning tank liquid for pretreatment, the pretreatment efficiency is obviously improved in the mode that one pretreatment station 201 finishes a plurality of pretreatment steps; in addition, when the pretreatment is carried out, the spray treatment mode is adopted, and compared with the mode that the front end of the long workpiece 100 is immersed into the cleaning tank liquid, the cleaning degree of the spray pressure on the inner wall of the blind hole 100a is obviously better, so that the cleaning effect and the cleaning quality in the blind hole 100a are better.
Specifically, after the front end of the long workpiece 100 is pushed into the pretreatment station 201 and positioned, the rotating mechanism is started to enable the long workpiece 100 to rotate, and the cleaning head 201a extends into the blind hole 100a;
then, the plurality of cleaning pipes 201b sequentially spray cleaning liquid toward the inner wall of the blind hole 100a, and perform pretreatment on the inner wall of the blind hole 100a plurality of times.
According to the sequence of pretreatment steps, the first cleaning pipe 201b is started to spray towards the inner wall of the blind hole 100a, and the cleaning head 201a is fixed because the long workpiece 100 is in a rotation state, so that continuous spraying can spray all positions on the inner wall of the blind hole 100a; after the injection of the first purge tube 201b is completed, the first purge tube 201b is closed; the second cleaning tube 201b is started again to spray the inner wall of the blind hole 100a of the rotating long workpiece 100, and then the inner wall of the blind hole 100a is sprayed through the cleaning tubes 201b in sequence, which is not described again.
Each cleaning tube 201b inputs cleaning liquid through a cleaning pump and then sprays towards the inner wall of the blind hole 100a through the front end spray hole of the cleaning tube 201b; each cleaning tube 201b is adapted to the cleaning liquid of the corresponding process step according to the different pretreatment process steps.
The following description will be given by taking a pretreatment of a high-voltage long conductor as an example, the pretreatment of the high-voltage long conductor using a cleaning head 201a formed by six cleaning pipes 201b arranged in a hexagonal shape, the pretreatment steps of which sequentially include:
firstly, starting a first cleaning pipe 201b, and spraying weak alkali liquor into the blind hole 100a by the first cleaning pipe 201b for surface adjustment, wherein the temperature of the weak alkali liquor is 50-60 ℃ and the spraying time is 5-6 min; closing the first purge tube 201b after the injection is completed;
starting a sixth cleaning pipe 201b, and spraying clean water into the blind hole 100a by the sixth cleaning pipe 201b, wherein the cleaning time is 0.5-1 min; after the injection is completed, the sixth cleaning tube 201b is closed;
starting a second cleaning pipe 201b, and spraying strong acid liquid into the blind hole 100a by the second cleaning pipe 201b for light emission, wherein the spraying time is 0.5-1 min; closing the second purge tube 201b after the injection is completed;
starting a sixth cleaning pipe 201b, and spraying clean water into the blind hole 100a by the sixth cleaning pipe 201b, wherein the cleaning time is 0.5-1 min; after the injection is completed, the sixth cleaning tube 201b is closed;
starting a third cleaning pipe 201b, and spraying strong alkali liquor into the blind hole 100a by the third cleaning pipe 201b for zinc leaching, wherein the spraying time is 1.5-2 min; closing the third purge tube 201b after the injection is completed;
starting a sixth cleaning pipe 201b, and spraying clean water into the blind hole 100a by the sixth cleaning pipe 201b, wherein the cleaning time is 0.5-1 min; after the injection is completed, the sixth cleaning tube 201b is closed;
starting a fourth cleaning pipe 201b, and spraying strong acid liquid into the blind hole 100a by the fourth cleaning pipe 201b for dezincification, wherein the spraying time is 1.5-2 min; closing the fourth cleaning pipe 201b after the injection is completed;
starting a sixth cleaning pipe 201b, and spraying clean water into the blind hole 100a by the sixth cleaning pipe 201b, wherein the cleaning time is 0.5-1 min; after the injection is completed, the sixth cleaning tube 201b is closed;
starting a fifth cleaning pipe 201b, and spraying strong alkali liquor into the blind hole 100a by the fifth cleaning pipe 201b for secondary zinc leaching, wherein the spraying time is 1.5-2 min; or, the fifth cleaning tube 201b sprays chemical nickel liquid into the blind hole 100a, wherein the temperature of the chemical nickel liquid is 37-42 ℃ and the spraying time is 1.5-2 min; closing the fifth purge tube 201b after the injection is completed;
starting a sixth cleaning pipe 201b, and spraying clean water (during secondary zinc dipping) or pure water (during chemical nickel liquid spraying) into the blind hole 100a by the sixth cleaning pipe 201b, wherein the cleaning time is 0.5-1 min; after the injection is completed, the sixth purge tube 201b is closed.
It can be seen that when the high-voltage long conductor is pretreated, the pretreatment is mainly performed by adopting the process steps of surface adjustment, light-emitting, zinc dipping, dezincification, secondary zinc dipping or chemical nickel spraying, and after each pretreatment process step, the inner wall of the blind hole 100a is further cleaned by water washing so as to ensure the treatment quality of the next pretreatment process step.
In addition, the same cleaning pipe 201b is adopted to finish the repeated water washing after each pretreatment step, so that the number of the water washing cleaning pipes 201b is reduced, the weight of the cleaning head 201a is reduced, and the utilization rate of the water washing cleaning pipes 201b is improved.
It should be appreciated that the pretreatment process parameters described above may be adjusted according to the actual product and are not limited to the examples of parameters described above given in the present application.
In the above example, in one pretreatment station 201, a plurality of pretreatment steps are completed by the cleaning head 201a having six cleaning pipes 201b, so that the transfer time of the product between the pretreatment steps is reduced, and the pretreatment efficiency and pretreatment quality are improved.
After the pretreatment is finished, the product is subjected to flow plating operation:
s120, moving the long workpiece 100 to a flow plating station, and performing flow plating on the front end blind holes 100a of the long workpiece 100.
A bracket 200 is also arranged on one side of the flow plating station in the same way, and long workpieces 100 are borne by the bracket 200; a flow plating head is arranged on the flow plating station, the flow plating head is connected with a flow plating pipe, and a flow plating pump conveys plating liquid to the flow plating head through the flow plating pipe; in the flow plating operation process, the long workpiece 100 rotates, a flow plating head extends into the blind hole 100a, a flow plating pen on the flow plating head is in contact with the inner wall of the blind hole 100a, and plating solution is plated on the inner wall of the blind hole 100a in a flow plating mode through the space between the flow plating pen of the flow plating head and the inner wall of the blind hole 100a under the action of cathode and anode conduction; the flow plating process may refer to fig. 2 for the state of the long workpiece 100 at the pre-processing station 201.
The plating solution flows out from the flow plating pen, flows along the inner wall of the blind hole 100a, and flows and plates on the inner wall of the blind hole 100a in the rotation state of the long workpiece 100. The method adopts a flow plating mode, so that the thickness of a metal layer plated on the inner wall of the blind hole 100a is more uniform, and the compactness of a formed plating layer is better.
In addition, during the flow plating operation, the eccentric motor can drive the flow plating head to swing in a small amplitude, so that the flow plating head swings on the blind hole 100a and performs the flow plating operation, thereby effectively avoiding overflow of hydrogen ions in the plating solution and avoiding hydrogen embrittlement of the blind hole 100a caused by overflow of the hydrogen ions left in the blind hole 100a.
The plating holes are uniformly formed in the flow plating head, so that the plating solution sequentially passes through the flow plating pipe, the uniform plating holes and the flow plating pen flow plating on the inner wall of the blind hole 100a, and the flow plating uniformity of the plating solution on the inner wall of the blind hole 100a is improved through the uniform distribution of the electric field on the flow plating head, thereby being beneficial to forming a plating layer with uniform thickness.
For the high-voltage long conductor, two times of flow plating are needed, copper preplating is firstly carried out, and silver plating is then carried out; correspondingly, two flow plating stations are required:
after the pretreatment is completed, the long workpiece 100 is moved to a primary flow plating station 202a, and primary flow plating is performed on the front end blind hole 100a of the long workpiece 100.
When primary copper plating is carried out, the primary plating solution is copper solution, the primary flow plating pipe inputs the copper solution to the primary flow plating head, the temperature of the copper solution is 50-60 ℃, and the flow plating time is 15-20 min. To form a copper layer on the inner wall of the blind hole 100a; after the primary flow plating is finished, pure water is also adopted for cleaning, the water cleaning time is 0.5-1 min, so that copper liquid on the inner wall of the blind hole 100a is cleaned, and preparation is made for the next silver plating.
Before flow plating, an independent water washing pipe firstly extends into the blind hole 100a, then a flow plating head extends into the blind hole 100a, and the two parts are not interfered with each other; the flow plating head is started first, and after the flow plating is completed, the water washing pipe is started to spray water to wash the inside of the blind hole 100a.
After the primary flow plating is completed, the long workpiece 100 is moved to a secondary flow plating station 202b, and secondary flow plating is performed on the front end blind hole 100a of the long workpiece 100.
During secondary flow plating, the secondary plating solution is silver solution, the secondary flow plating pipe inputs silver solution into the secondary flow plating head, the temperature of the silver solution is 30-40 ℃, the flow plating time is 50-55 min, and a silver layer is flow plated on the inner wall of the blind hole 100a.
And similarly, after the secondary flow plating is finished, pure water is adopted for cleaning, the water cleaning time is 0.5-1 min, so that the silver liquid on the inner wall of the blind hole 100a is cleaned, the whole product flow plating is finished, and the product is transported to the next working procedure.
The high-voltage long conductor is subjected to the twice flow plating, and different products are subjected to flow plating times and flow plating parameters, and the flow plating parameters are set according to specific requirements.
Illustratively, in fig. 4 of the present application, five stations are shown, the middle station is a pretreatment station 201, and two primary flow plating stations 202a are respectively located at two sides of the pretreatment station 201; two secondary flow plating stations 202b are respectively positioned outside the two primary flow plating stations 202 a; because the flow plating operation time is shorter and the pretreatment operation time is longer, two primary flow plating stations 202a and two secondary flow plating stations 202b can be arranged to improve the production efficiency, so that long work pieces 100 are ensured to be operated on each station, and the waiting time between the working procedures is reduced.
In summary, the pretreatment flow plating method for the long workpiece 100 provided in the embodiment of the application adopts pretreatment and flow plating integrated equipment, and the pretreatment station 201 and the flow plating station are arranged side by side to perform pretreatment and flow plating on the horizontally placed long workpiece 100; firstly, the front end of a long workpiece 100 is slightly lower, the tail end is higher and obliquely enters a pretreatment station 201, and pretreatment is carried out for a plurality of times at one pretreatment station 201; specifically, a cleaning head 201a formed by a plurality of cleaning pipes 201b arranged in a polygonal shape can be adopted, after the cleaning head 201a extends into a blind hole 100a of a long workpiece 100, each cleaning pipe 201b sequentially sprays different cleaning liquids into the blind hole 100a in a state of autorotation of the long workpiece 100, so as to complete multiple pretreatment steps; after the pretreatment is completed, the long workpiece 100 is horizontally moved to an adjacent flow plating station, and likewise, a flow plating head extends into the blind hole 100a of the long workpiece 100, and the inner wall of the blind hole 100a is subjected to flow plating in the rotation state of the long workpiece 100 so as to form a plating layer on the inner wall of the blind hole 100a. The method adopts the automatic equipment to perform pretreatment and flow plating on the inner wall of the blind hole 100a of the long workpiece 100, and the operation process can ensure the quality of pretreatment and flow plating through automatic control, thereby improving the production efficiency, reducing the labor intensity and improving the operation environment; in addition, the operation time length workpiece 100 is horizontally hoisted, the operation time length workpiece is not limited by the length of the long workpiece 100 any more, the production range is enlarged, the production requirements of products with different lengths are met, and when the long workpiece 100 is processed by the method, the length of the long workpiece 100 can reach 6 m-7 m, and even longer.
The above is only an example of the present application, and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (10)
1. A method of pre-treatment flow plating of a long workpiece having a blind hole disposed in an axial direction at a front end thereof, the method comprising:
hoisting the long workpiece to a bracket of a pretreatment station, so that the front end of the long workpiece horizontally enters the pretreatment station;
sequentially carrying out pretreatment on the blind holes of the long workpieces for multiple times so as to clean the blind holes of the long workpieces;
moving the long workpiece to a flow plating station, and performing flow plating on the blind holes of the long workpiece; wherein, pretreatment station with flow plating station sets up side by side.
2. The method of claim 1, wherein the lifting the long workpiece to the carrier of the pretreatment station horizontally advances the front end of the long workpiece into the pretreatment station, comprising:
the long workpiece is hoisted to a bracket of the pretreatment station, so that the heights of the front end of the long workpiece and a horizontal plane are smaller than those of the tail end of the long workpiece and the horizontal plane;
pushing the long workpiece to enable the front end of the long workpiece to enter the pretreatment station and be positioned.
3. The method for pretreating a long workpiece according to claim 2, wherein a cleaning head is provided on the pretreatment station, the cleaning head comprising a plurality of cleaning tubes integrally arranged to form a polygon;
the pretreatment is sequentially carried out on the blind holes of the long workpieces for a plurality of times so as to clean the blind holes of the long workpieces, and the pretreatment comprises the following steps:
the cleaning head stretches into the blind hole and drives the long workpiece to radially rotate;
and the cleaning pipes spray cleaning liquid towards the inner wall of the blind hole in sequence so as to pretreat the inner wall of the blind hole for a plurality of times.
4. A method of pre-treatment flow plating of long workpieces according to claim 3, wherein the cleaning head comprises six cleaning tubes arranged in a hexagonal pattern; the cleaning pipes spray cleaning liquid towards the inner wall of the blind hole in sequence, so as to carry out pretreatment on the inner wall of the blind hole for a plurality of times, and the cleaning pipes comprise:
spraying weak alkali liquor into the blind hole by the first cleaning pipe for surface adjustment, wherein the temperature of the weak alkali liquor is 50-60 ℃, and closing the first cleaning pipe after spraying for 5-6 min;
spraying strong acid liquid into the blind hole by the second cleaning pipe to emit light, and closing the second cleaning pipe after spraying for 0.5-1 min;
spraying strong alkali liquor into the blind hole by the third cleaning pipe for zinc leaching, and closing the third cleaning pipe after spraying for 1.5-2 min;
spraying strong acid liquid into the blind hole by the fourth cleaning pipe to dezincifize, and closing the fourth cleaning pipe after spraying for 1.5-2 min;
fifthly, injecting strong alkali liquor into the blind holes by the cleaning pipe to carry out secondary zinc leaching, wherein the injection time is 1.5-2 min; or spraying chemical nickel liquid into the blind hole by the fifth cleaning pipe, wherein the temperature of the chemical nickel liquid is 37-42 ℃, and the spraying time is 1.5-2 min; and closing a fifth cleaning pipe after the spraying is finished.
5. The method according to claim 4, wherein the cleaning pipes sequentially spray cleaning liquid toward the inner wall of the blind hole to perform a plurality of times of pretreatment on the inner wall of the blind hole, comprising:
and after each pretreatment, washing with water, and spraying clean water or purified water into the blind holes by the sixth cleaning pipe, wherein the cleaning time is 0.5-1 min.
6. The method according to any one of claims 1 to 5, wherein the flow plating station is provided with a flow plating head to which a flow plating pipe is connected;
moving the long workpiece to a flow plating station, and performing flow plating on the blind holes of the long workpiece, wherein the flow plating comprises the following steps:
the flow plating head extends into the blind hole to contact with the inner wall of the blind hole, so as to drive the long workpiece to radially rotate;
and conveying plating solution to the flow plating head through the flow plating pipe, wherein the plating solution is subjected to flow plating between the flow plating head and the inner wall of the blind hole.
7. The method of pretreating a long workpiece according to claim 6, wherein the long workpiece is subjected to two-pass plating; moving the long workpiece to a flow plating station, and performing flow plating on the blind holes of the long workpiece, wherein the flow plating comprises the following steps:
moving the long workpiece to a primary flow plating station, and carrying out primary flow plating on the blind holes of the long workpiece;
and moving the long workpiece to a secondary flow plating station, and performing secondary flow plating on the blind holes of the long workpiece.
8. The method of claim 7, wherein moving the long workpiece to a primary flow plating station, and primary flow plating the blind holes of the long workpiece, comprises:
the primary plating solution is copper solution, the primary flow plating pipe inputs the copper solution to the primary flow plating head, the temperature of the copper solution is 50-60 ℃, and the flow plating time is 15-20 min.
9. The method of claim 8, wherein said moving said long workpiece to a secondary flow plating station, and performing secondary flow plating on blind holes of said long workpiece, comprises:
the secondary plating solution is silver solution, the silver solution is input to the secondary flow plating head through the secondary flow plating pipe, the temperature of the silver solution is 30-40 ℃, and the flow plating time is 50-55 min.
10. The pretreatment flow plating method of a long workpiece according to any one of claims 7 to 9, wherein after the primary flow plating and the secondary flow plating, the inside of the blind hole of the long workpiece is respectively washed with water for 0.5min to 1min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310430419.XA CN116426991A (en) | 2023-04-20 | 2023-04-20 | Pretreatment flow plating method for long workpiece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310430419.XA CN116426991A (en) | 2023-04-20 | 2023-04-20 | Pretreatment flow plating method for long workpiece |
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| CN116426991A true CN116426991A (en) | 2023-07-14 |
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| CN202310430419.XA Pending CN116426991A (en) | 2023-04-20 | 2023-04-20 | Pretreatment flow plating method for long workpiece |
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- 2023-04-20 CN CN202310430419.XA patent/CN116426991A/en active Pending
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