CN112301393B - Equipment and process for nano composite electroplating of inner surface of metal pipe fitting - Google Patents
Equipment and process for nano composite electroplating of inner surface of metal pipe fitting Download PDFInfo
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- CN112301393B CN112301393B CN202011187854.7A CN202011187854A CN112301393B CN 112301393 B CN112301393 B CN 112301393B CN 202011187854 A CN202011187854 A CN 202011187854A CN 112301393 B CN112301393 B CN 112301393B
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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
- C25D7/00—Electroplating characterised by the article coated
- C25D7/04—Tubes; Rings; Hollow bodies
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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
- C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
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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
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/10—Agitating of electrolytes; Moving of racks
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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
- C25D5/02—Electroplating of selected surface areas
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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
- C25D5/20—Electroplating using ultrasonics, vibrations
Abstract
The invention discloses equipment and a process for nano composite electroplating of the inner surface of a metal pipe fitting, wherein the equipment comprises a plating solution tank, an out-tank fluid plating assembly, a crushing kettle and an energy-gathered ultrasonic crushing device, wherein the out-tank fluid plating assembly comprises the metal pipe fitting used as a cathode and an anode column positioned in the metal pipe fitting, the inner wall of the metal pipe fitting and the outer wall of the anode column enclose an annular column cavity, and the crushing kettle is arranged outside the plating solution tank; the plating solution circulation pipeline sends the plating solution containing nano particles from the plating solution tank to the crushing kettle for ultrasonic crushing, then sends the crushed plating solution to the annular column cavity, and finally sends the crushed plating solution back to the plating solution tank. The equipment has good timeliness and good flowing property of the plating solution in the annular column cavity, slows down the dynamic reunion phenomenon of the nano particles, and has better plating uniformity on the plating layer. The electroplating process of the invention firstly carries out pre-dispersion treatment and then carries out formal electroplating, so that nano particles are dispersed more uniformly during formal electroplating, and the plating layer performance is better.
Description
Technical Field
The invention relates to the technical field of metal surface treatment, in particular to equipment and a process for nano composite electroplating on the inner surface of a metal pipe fitting.
Background
The nano composite electroplating is pursued by researchers due to the excellent plating performance, and a great deal of literature reports are about the preparation of the nano composite electroplating solution and the preparation of the plating layer. For nano composite electroplating, how to uniformly disperse the nano material in the plating solution and the plating layer and further keep the nano-scale size form is a key and difficult point of the whole technology. Many researchers only add nanoparticles into a plating solution system to carry out macroscopic uniform mixing, do not pay attention to the microscopic real dispersion state of the nanoparticles, and do not effectively carry out dispersion control on the plating solution containing the nanoparticles in the electroplating process. This often results in severe agglomeration of particles in the composite coating and a failure to significantly improve the coating properties.
The currently common nanoparticle dispersion methods include a chemical modification method, a mechanical stirring method and an ultrasonic dispersion method, and the three methods have advantages and disadvantages respectively. The chemical modification method needs to search for proper modifier components and content aiming at different nano particles and different plating solution systems, has uneven modification effects, and is easy to cause organic pollution to the plating solution; the mechanical stirring method theoretically only can play a role of uniformly distributing particles in a container, and the energy of the mechanical stirring method is not enough to break up agglomerated nano particles; the ultrasonic dispersion method comprises two modes of groove type ultrasonic and energy-gathering type ultrasonic, wherein the groove type ultrasonic can customize the size of a container according to requirements, but the groove type ultrasonic is usually small in energy density, the ultrasonic amplitude is about 10 mu m, and the capability of breaking aggregates is limited; the energy-gathering ultrasonic energy has high density and amplitude of over 100 microns, and can effectively break agglomerated nano particles, and the defect is that the action range is small.
In the nano composite electroplating treatment equipment and method for the inner surface of the metal pipe fitting, no matter the groove type ultrasonic and energy-gathering groove depth is adopted, due to the limitation of the inner space of the metal pipe, the nano particles are easy to agglomerate in the metal pipe, so that the plating layer of the inner surface of the metal pipe fitting is not uniform enough when nano composite electroplating is carried out.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides an apparatus and a process for nanocomposite plating of inner surfaces of metal pipes, so as to reduce the dynamic re-agglomeration of nanoparticles and improve the uniformity of the inner surface coating of the metal pipes.
In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:
an apparatus for nanocomposite plating of an inner surface of a metallic pipe comprising:
the plating solution tank is internally filled with plating solution containing nano particles;
the device comprises an out-of-tank fluid plating assembly, a control assembly and a control assembly, wherein the out-of-tank fluid plating assembly comprises a metal pipe fitting used as a cathode and an anode post positioned in the metal pipe fitting, and an annular post cavity is formed by the inner wall of the metal pipe fitting and the outer wall of the anode post in a surrounding manner;
the crushing kettle is arranged outside the plating solution tank;
the energy-gathering ultrasonic crushing device is used for scattering agglomerated nano particles in the plating solution in the crushing kettle; and
and the plating solution circulating pipeline comprises a first pipeline for sending the plating solution in the plating solution tank to the crushing kettle, a second pipeline for sending the plating solution in the crushing kettle to the annular column cavity, and a third pipeline for enabling the plating solution in the annular column cavity to flow back to the plating solution tank.
Optionally, the assembly for fluid plating outside the tank further includes a first mounting seat, a second mounting seat and a compressing assembly, the first mounting seat seals one end of the annular column cavity, the second mounting seat is located at the other end of the annular column cavity, the compressing assembly compresses the first mounting seat and the second mounting seat respectively at two ends of the metal pipe fitting, the first mounting seat is provided with a fluid inlet, and the second mounting seat is provided with a fluid outlet.
Optionally, the annular column cavity is vertically arranged;
the first mounting seat is a flange seat with the middle part blocked, the first mounting seat is blocked and supported at the bottom end of the annular column cavity, the first mounting seat, the anode column and the metal pipe fitting are arranged to enclose a bottom extending space for enclosing the annular column cavity, the fluid inlet is vertically arranged at the center of the bottom of the first mounting seat, and the fluid inlet is directly communicated with the bottom extending space;
the second mounting seat is a hollow flange seat, the second mounting seat is pressed at the top end of the metal pipe fitting, an upper extending space of the annular column cavity is defined by the second mounting seat and the anode column, and the fluid outlet is formed in the periphery of the upper extending space.
Optionally, the compression assembly includes a plurality of compression screws and compression nuts, each compression screw penetrates through the first mounting seat and the second mounting seat, the circumference of each compression screw is uniformly distributed on the periphery of the metal pipe, the compression nuts are mounted on the compression screws, and the compression nuts are respectively compressed on the first mounting seat and the second mounting seat.
Optionally, the energy-concentrating ultrasonication device comprises:
the ultrasonic generator is arranged outside the crushing kettle;
the energy-gathering type ultrasonic amplitude transformer is inserted into the crushing kettle and is arranged on the ultrasonic generator; and
and the ultrasonic power supply is used for supplying power to the ultrasonic generator and is connected with the ultrasonic generator.
Optionally, an opening into which the energy-collecting ultrasonic horn is inserted is formed in the top end of the crushing kettle, a plating solution inlet is formed in the bottom of the crushing kettle, and a plating solution overflow outlet is formed in the upper portion of the crushing kettle.
Optionally, a power pump, a flow meter and a flow regulating valve are further arranged on the first pipeline, and the power pump, the flow regulating valve, the flow meter and the crushing kettle are sequentially arranged.
Optionally, the equipment is still including being used for the mixing the agitating unit that blows of plating bath inslot plating solution, the agitating unit that blows includes gas blow pipe, air supply and is used for carrying the gas conveying pipeline to the gas blow pipe in the air supply, the gas blow pipe sets up in the plating bath inslot, set up a plurality of gas holes that are used for stirring plating bath inslot plating solution on the gas blow pipe.
Optionally, the gas blow pipe is including being in the section of blowing of the bottom of plating bath groove follows the axial of the section of blowing is evenly spaced and is arranged a plurality of groups of the punch combination of blowing, every group the punch combination of blowing includes one or more the hole of blowing, every group each in the punch combination of blowing the hole all about the vertical central plane symmetrical arrangement of the section of blowing, every group in the hole of blowing each in the hole of group, some or whole the axial of hole of blowing all forms the contained angle with vertical direction, makes some or whole the hole of blowing slope orientation the bottom of plating bath groove.
Optionally, the apparatus further comprises a temperature-controlled heater extending into the plating solution tank, wherein the temperature-controlled heater is used for keeping the temperature in the plating solution tank within a preset range.
Optionally, a group of air blowing hole groups is arranged on the air blowing section every 10-50 mm, each group of air blowing hole groups comprises two air blowing holes, the diameter of each air blowing hole is 0.2-1 mm, and the included angle between each air blowing hole and the vertical direction is 20-40 degrees.
The invention also provides a process for the nano composite electroplating of the inner surface of the metal pipe fitting, which comprises the following steps:
before formal nano-composite plating is started, any one of the devices for nano-composite plating on the inner surface of the metal pipe fitting is started to pre-disperse nano-particles in the plating solution,
and after the pre-dispersion treatment time reaches the preset time, electrifying the cathode and the anode to carry out formal electroplating.
The equipment for the nano composite electroplating of the inner surface of the metal pipe fitting can directly convey the plating solution containing the nano particles crushed by real-time ultrasonic waves into the annular column cavity for nano composite electroplating, and carry out fluid plating outside the tank while crushing the nano particles by ultrasonic waves, so that the equipment has good timeliness, the flowing property of the plating solution in the annular column cavity is good, the dynamic re-agglomeration phenomenon of the nano particles is relieved, and the plating uniformity on the plating layer is better. Furthermore, the use of plating solution in the out-of-tank plating mode, which is significantly less in content than plating solution in the in-tank plating, is more advantageous for the dispersion of nanoparticles.
The process for nano composite electroplating on the inner surface of the metal pipe fitting, disclosed by the invention, has the advantages that the pre-dispersion treatment is firstly carried out, then the formal electroplating is carried out, so that nano particles are dispersed more uniformly during the formal electroplating, and the plating layer performance is better.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for nanocomposite plating of inner surfaces of metal pipes according to the present invention;
FIG. 2 is a partial schematic view at M of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic structural view of an out-of-tank fluid plating assembly;
fig. 5 shows the scanning electron microscope structure of the plated layer after the metal pipe is electroplated by the equipment and the process of the invention.
Description of reference numerals:
a plating solution tank 1;
the device comprises a crushing kettle 2, an opening 201, a plating solution inlet 202 and a plating solution overflow outlet 203;
an ultrasonic generator 31, an energy-gathering type ultrasonic amplitude transformer 32, a connecting wire 33 and an ultrasonic power supply 34;
a first pipeline 41, a second pipeline 42, a third pipeline 43, a power pump 44, a flow meter 45 and a flow regulating valve 46;
an air blowing pipe 51, an air source 52, an air conveying pipeline 53 and an air blowing hole 511;
a temperature-controlled heater 6;
a plating solution 7,
The system comprises an extra-tank fluid plating assembly 8, a metal pipe 81, an anode column 82, an isolation positioning column 821, a first mounting seat 83, a fluid inlet 831, a second mounting seat 84, a fluid outlet 842, a compression screw 85, a compression nut 86, an annular column cavity 801, a bottom extension space 802 and an upper extension space 803.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Referring collectively to fig. 1-5, an apparatus for nanocomposite plating of an interior surface of a metallic pipe comprises:
the plating solution tank 1 is used for containing a plating solution 7 containing nano particles in the plating solution tank 1;
the outside-tank fluid plating assembly 8 comprises a metal pipe fitting 81 used as a cathode and an anode post 82 positioned in the metal pipe fitting 81, wherein the inner wall of the metal pipe fitting 81 and the outer wall of the anode post 82 enclose an annular post cavity 801;
the crushing kettle 2 is arranged outside the plating solution tank 1;
energy-collecting ultrasonic crushing devices (31, 32, 33, 34) for breaking up agglomerated nanoparticles in the plating solution in the crushing kettle 2; and
and the plating solution circulating pipeline comprises a first pipeline 41 for sending the plating solution in the plating solution tank 1 to the crushing kettle 2, a second pipeline 42 for sending the plating solution in the crushing kettle 2 to the annular column cavity 801, and a third pipeline 43 for enabling the plating solution in the annular column cavity 801 to flow back to the plating solution tank 1.
During electroplating, the plating solution in the plating solution tank 1 is sent into the crushing kettle 2 through the first pipeline 41, the energy-gathered ultrasonic crushing device disperses nanoparticles in the plating solution in the crushing kettle 2, then the plating solution is sent to the annular column cavity 801 of the fluid plating assembly 8 outside the tank from the crushing kettle 2 along with the second pipeline 42 to participate in electroplating, and finally the plating solution flows back to the plating solution tank 1 from the annular column cavity 801 through the third pipeline 43.
According to the equipment for the nano composite electroplating of the inner surface of the metal pipe fitting, a small amount of plating solution is subjected to energy-gathering ultrasonic crushing in the crushing kettle 2 outside the tank, the dispersing effect of nano particles is good, the treated plating solution can timely enter the annular column cavity 801, the timeliness is good, the flowing performance of the plating solution in the annular column cavity 801 is good, the dynamic re-agglomeration phenomenon of the nano particles can be relieved, and the plating uniformity on a plating layer is better.
In some embodiments, the extra-tank fluid plating assembly 8 further includes a first mounting seat 83, a second mounting seat 84 and a compressing assembly, the first mounting seat 83 blocks one end of the annular column cavity 801, the second mounting seat 84 is located at the other end of the annular column cavity 801, the compressing assembly compresses the first mounting seat 83 and the second mounting seat 84 respectively against two ends of the metal pipe 81, the first mounting seat 83 is provided with a fluid inlet 831, the second mounting seat 84 is provided with a fluid outlet 842, and the fluid inlet is connected to the second pipeline 42.
When the inner surface of the metal pipe fitting needs to be electroplated, the metal pipe fitting 81 and the anode post 82 are positioned by using the first mounting seat 83, the second mounting seat 84 and the pressing assembly to form the annular post cavity 801, and then electroplating is carried out; conversely, when the electroplating is completed, the pressing assembly can be released, and the metal pipe 81 can be removed.
In some embodiments, the annular column cavity 801 is vertically disposed;
the first mounting seat 83 is a flange seat with a middle part blocked, the first mounting seat 83 is blocked and supported at the bottom end of the annular column cavity 801, the first mounting seat 83, the anode post 82 and the metal pipe 81 are arranged to form a bottom extension space 802 enclosing the annular column cavity 801, the fluid inlet 831 is vertically arranged at the center of the bottom of the first mounting seat 83, and the fluid inlet 831 is directly communicated with the bottom extension space 802;
the second mounting seat 84 is a hollow flange seat, the second mounting seat 84 is pressed on the top end of the metal pipe 81, an upper extending space 803 of the annular column cavity 801 is defined between the second mounting seat 84 and the anode pole 82, and the fluid outlet 842 is opened on the periphery of the upper extending space 803.
During electroplating, the crushed plating solution enters the bottom extension space 802 from the fluid inlet 831 in the bottom of the first mounting seat 83, sequentially flows through the annular column cavity 801 and the upper extension space 803, and then flows back to the plating solution tank 1 through the fluid outlet 842.
Referring to fig. 2, in some embodiments, the anode pillar 82 sequentially penetrates through the second mounting seat 84 and the metal pipe 81 from top to bottom and then enters the bottom extension space 802, an isolation positioning pillar 821 for separating the bottom surface of the extension space from the bottom surface of the anode pillar 82 is disposed between the bottom of the anode pillar 82 and the first mounting seat 83, and the isolation positioning pillar 821 is located at the periphery of the fluid inlet 831 to avoid the fluid inlet 831, which is beneficial to making the plating solution flow to all parts of the annular pillar cavity 801 more uniformly. In practical implementation, the isolation positioning pillars 821 may be integrally disposed at the bottom of the anode pillar 82, the bottom of the bottom extension space 802 is provided with a positioning hole for inserting the isolation positioning pillars 821, when the anode pillar 82 is installed, only the isolation positioning pillars 821 at the bottom of the anode pillar 82 are required to be inserted into the corresponding positioning hole, and the number of the positioning pillars is at least two.
In some embodiments, the pressing assembly includes a plurality of pressing screws 85 and pressing nuts 86, each of the pressing screws 85 penetrates through the first mounting seat 83 and the second mounting seat 84, each of the pressing screws 85 is circumferentially distributed on the periphery of the metal pipe 81, the pressing nuts 86 are mounted on the pressing screws 85, and the pressing nuts 86 are respectively pressed on the first mounting seat 83 and the second mounting seat 84.
When the assembly 8 is assembled or disassembled, the compression nut 86 and the compression screw 85 can be disassembled or assembled, the operation is convenient, the cost of the compression assembly is low, and the compression assembly can be suitable for metal pipe fittings with different height sizes.
In some embodiments, the energy-concentrating ultrasonic crushing device comprises an ultrasonic generator 31, an energy-concentrating ultrasonic horn 32 and an ultrasonic power supply 34, wherein the ultrasonic generator 31 is arranged outside the crushing kettle 2; the energy-gathering ultrasonic amplitude transformer 32 is arranged on the ultrasonic generator 31 and is inserted into the crushing kettle 2; the ultrasonic power supply 34 is used for supplying power to the ultrasonic generator 31, and the ultrasonic power supply 34 is connected with the ultrasonic generator 31. Specifically, the ultrasonic power supply 34 is connected to the ultrasonic generator 31 through a connection line 33.
In some embodiments, the top end of the crushing kettle 2 is provided with an opening 201 for inserting the energy-gathering ultrasonic amplitude transformer, the bottom of the crushing kettle 2 is provided with a plating solution inlet 202, and the upper part of the crushing kettle 2 is provided with a plating solution overflow outlet 203. At this time, the plating solution in the plating solution tank 1 enters the crushing kettle 2 from the plating solution inlet 202 located at the bottom of the crushing kettle 2, the plating solution needs to overcome the self-weight and then rises to the plating solution overflow outlet 203 at the upper part of the crushing kettle 2, and the plating solution rises from bottom to top, so that the staying time of the plating solution in the crushing kettle 2 is easier to control, and more uniform scattering of nanoparticles is facilitated.
In some embodiments, the first pipeline 41 is further provided with a power pump 44, a flow meter 45 and a flow regulating valve 46, and the power pump 44, the flow regulating valve 46, the flow meter 45 and the crushing kettle 2 are sequentially arranged, so that the flow of the plating solution can be regulated, and the treatment time (residence time) of the plating solution in the crushing kettle 2 can be regulated.
In some embodiments, the equipment for metal pipe surface nanocomposite plating further comprises a blowing and stirring device for uniformly mixing the plating solution in the plating solution tank 1, wherein the blowing and stirring device comprises a blowing pipe 51, an air source 52 and an air conveying pipeline 53 for conveying air in the air source 52 to the blowing pipe 51, the blowing pipe 51 is arranged in the plating solution tank 1, a plurality of blowing holes 511 for stirring the plating solution in the plating solution tank 1 are formed in the blowing pipe 51, and the arrangement of the blowing holes 511 is favorable for uniformly mixing nanoparticles of the plating solution in the plating solution tank 1. In practical implementation, the air source 52 may be processed by an air compressor and then sent to the blowing pipe 51 through the air delivery pipe 53, and the blowing pressure is higher.
In some embodiments, the air blowing pipe 51 includes the section of blowing that is in the bottom of plating bath groove 1, follows the axial of the section of blowing is evenly at intervals arranged a plurality of groups of blowing hole group, every group the blowing hole group includes one or more the air blowing hole 511, the nano-particle of plating bath in the even mixing plating bath groove 1 that can be more even improves the cladding material performance.
In some embodiments, the axial direction of part or all of the air blowing holes 511 forms an included angle with the vertical direction, so that part or all of the air blowing holes 511 are inclined towards the bottom of the plating solution tank 1, the air blowing holes 511 can blow air downwards obliquely towards the plating solution tank 1, so that the plating solution in the lower part of the plating solution tank 1 flows downwards obliquely along with the air flow, and then rebounds upwards or upwards obliquely at the bottom of the plating solution tank 1, so that the nanoparticles deposited downwards in the plating solution tank 1 are stirred along with the plating solution, the uniformity of the nanoparticles in the plating solution tank 1 is further improved, and the plating performance is improved.
In some embodiments, the air blowing holes 511 in each air blowing hole group are symmetrically arranged about the vertical central plane of the air blowing section, which is beneficial to make the plating solution in the plating solution tank 1 more uniform.
In practical implementation, a group of the air blowing holes may include two air blowing holes 511, for example, the two air blowing holes 511 form the same included angle with the vertical direction; the number of the group of the air blowing hole groups can be three, and a vertical downward air blowing hole is arranged between two symmetrical and inclined air blowing holes; of course, the number of blow holes may be more than three.
In some embodiments, a group of air blowing hole groups is arranged on the air blowing section every 10-50 mm, each group of air blowing hole groups comprises two air blowing holes 511 which are arranged correspondingly, the diameter of each air blowing hole 511 is 0.2-1 mm, the included angle between each air blowing hole 511 and the vertical direction is 20-40 degrees, the uniformity of nanoparticles in the plating solution tank 1 is better, the uniformity of the plating solution flowing into the first pipeline 41 can be higher, and finally the plating layer on the inner surface of the metal pipe 81 is more uniform.
Specifically, in some embodiments, each air blowing hole 511 forms an included angle of about 30 degrees with the vertical direction, a group of air blowing hole groups is arranged on the air blowing section every 20mm, and the diameter of each air blowing hole 511 is 0.5mm, so that the uniformity of the nanoparticles in the plating solution tank 1 is better.
In some embodiments, the apparatus further comprises a temperature-controlled heater 6 extending into the plating solution tank 1, wherein the temperature-controlled heater 6 is used for keeping the temperature in the plating solution tank 1 within a preset range, and the uniformity of the nanoparticles in the plating solution tank 1 is better.
The invention also provides a process for the nano composite electroplating of the inner surface of the metal pipe fitting, which comprises the following steps:
before formal nano-composite plating is started, any one of the devices for nano-composite plating on the inner surface of the metal pipe fitting is started to pre-disperse nano-particles in the plating solution,
and after the pre-dispersion treatment time reaches the preset time, electrifying the cathode and the anode to carry out formal electroplating.
The mode of pre-dispersing treatment and then electroplating can ensure that nano particles are dispersed more uniformly during formal electroplating and the plating performance is better.
In the practical implementation process, if the nano composite electroplating equipment comprises the air blowing stirring device and the heating device, when the whole nano composite electroplating equipment is started to carry out pre-dispersion treatment, the air blowing stirring device and the heating device are synchronously started, so that the nano particles in the plating solution are more uniform, and the performance of the plating layer on the inner surface of the metal pipe fitting is improved.
In some embodiments, the time of the pre-dispersion treatment is in the range of 1 to 3 hours, which can sufficiently disperse the nanoparticles. Referring to fig. 5, it can be seen that when the metal pipe is electroplated by the electroplating process of the present invention to form a coating, the nanoparticles are uniformly dispersed in the coating, and the particles are substantially maintained at nanoscale dimensions.
Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. An apparatus for nanocomposite plating of an interior surface of a metallic pipe, comprising:
the plating solution tank is internally filled with plating solution containing nano particles;
the device comprises an out-of-tank fluid plating assembly, a control assembly and a control assembly, wherein the out-of-tank fluid plating assembly comprises a metal pipe fitting used as a cathode and an anode post positioned in the metal pipe fitting, and an annular post cavity is formed by the inner wall of the metal pipe fitting and the outer wall of the anode post in a surrounding manner;
the crushing kettle is arranged outside the plating solution tank;
the energy-gathering ultrasonic crushing device is used for scattering agglomerated nano particles in the plating solution in the crushing kettle; and
the plating solution circulating pipeline comprises a first pipeline for sending the plating solution in the plating solution tank to the crushing kettle, a second pipeline for sending the plating solution in the crushing kettle to the annular column cavity, and a third pipeline for enabling the plating solution in the annular column cavity to flow back to the plating solution tank;
the fluid plating assembly outside the tank further comprises a first mounting seat, a second mounting seat and a pressing assembly, the first mounting seat seals one end of the annular column cavity, the second mounting seat is located at the other end of the annular column cavity, the pressing assembly presses the first mounting seat and the second mounting seat onto two ends of the metal pipe respectively, the first mounting seat is provided with a fluid inlet, and the second mounting seat is provided with a fluid outlet;
the compression assembly comprises a plurality of compression screws and compression nuts, each compression screw penetrates through the first mounting seat and the second mounting seat, the periphery of each compression screw is uniformly distributed on the periphery of the metal pipe fitting, the compression nuts are mounted on the compression screws, and the compression nuts are respectively compressed on the first mounting seat and the second mounting seat.
2. The apparatus according to claim 1, wherein the apparatus comprises: the annular column cavity is vertically arranged;
the first mounting seat is a flange seat with the middle part blocked, the first mounting seat is blocked and supported at the bottom end of the annular column cavity, the first mounting seat, the anode column and the metal pipe fitting are arranged to enclose a bottom extending space for enclosing the annular column cavity, the fluid inlet is vertically arranged at the center of the bottom of the first mounting seat, and the fluid inlet is directly communicated with the bottom extending space;
the second mounting seat is a hollow flange seat, the second mounting seat is pressed at the top end of the metal pipe fitting, an upper extending space of the annular column cavity is defined by the second mounting seat and the anode column, and the fluid outlet is formed in the periphery of the upper extending space.
3. The apparatus for nanocomposite galvanization of inner surfaces of metal pipes according to claim 1, wherein said energy-focused ultrasonic breaking means comprises:
the ultrasonic generator is arranged outside the crushing kettle;
the energy-gathering type ultrasonic amplitude transformer is inserted into the crushing kettle and is arranged on the ultrasonic generator; and
and the ultrasonic power supply is used for supplying power to the ultrasonic generator and is connected with the ultrasonic generator.
4. The apparatus according to claim 1, wherein the apparatus comprises: still be provided with power pump, flow meter and flow control valve on the first pipeline, power pump, flow control valve, flowmeter and broken cauldron sets gradually.
5. The apparatus according to claim 1, wherein the apparatus comprises: still including being used for the mixing the agitating unit that blows of plating bath inslot plating solution, the agitating unit that blows includes gas blow pipe, air supply and is used for carrying the gas delivery line to the gas blow pipe in the air supply, the gas blow pipe sets up in the plating bath groove, set up a plurality of gas holes that are used for stirring plating bath inslot plating solution on the gas blow pipe.
6. The apparatus according to claim 5, wherein the apparatus comprises: the gas blowing pipe is including being in the section of blowing of the bottom of plating bath groove follows the axial of the section of blowing is evenly arranged at interval a plurality of groups of the punch combination of blowing, every group the punch combination of blowing includes one or more the hole of blowing, every group each in the punch combination of blowing the hole all about the vertical central plane symmetrical arrangement of the section of blowing, every group in the hole of blowing each in the hole of blowing group, some or whole the axial of hole all forms the contained angle with vertical direction, makes some or whole the hole slope orientation of blowing the bottom of plating bath groove.
7. The apparatus according to claim 1, wherein the apparatus comprises: the plating solution tank is characterized by also comprising a temperature control heater extending into the plating solution tank, wherein the temperature control heater is used for keeping the temperature in the plating solution tank within a preset range.
8. A process for nanocomposite plating of an interior surface of a metallic pipe comprising:
before formal start of the nano composite plating, opening the equipment for nano composite plating on the inner surface of the metal pipe fitting according to any one of claims 1 to 7, pre-dispersing nano particles in the plating solution,
and after the pre-dispersion treatment time reaches the preset time, electrifying the cathode and the anode to carry out formal electroplating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011187854.7A CN112301393B (en) | 2020-10-30 | 2020-10-30 | Equipment and process for nano composite electroplating of inner surface of metal pipe fitting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011187854.7A CN112301393B (en) | 2020-10-30 | 2020-10-30 | Equipment and process for nano composite electroplating of inner surface of metal pipe fitting |
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| CN112301393A CN112301393A (en) | 2021-02-02 |
| CN112301393B true CN112301393B (en) | 2021-12-07 |
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