CN114904846B - Welding wire/welding strip laser cleaning equipment and precious metal recovery module thereof - Google Patents
Welding wire/welding strip laser cleaning equipment and precious metal recovery module thereof Download PDFInfo
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- CN114904846B CN114904846B CN202210508014.9A CN202210508014A CN114904846B CN 114904846 B CN114904846 B CN 114904846B CN 202210508014 A CN202210508014 A CN 202210508014A CN 114904846 B CN114904846 B CN 114904846B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
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- 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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Abstract
The application relates to surface cleaning of welding wires/welding strips, in particular to welding wire/welding strip laser cleaning equipment and a precious metal recovery module thereof. The noble metal recovery module of the welding wire/welding belt laser cleaning equipment comprises a cooling cavity, wherein the cooling cavity is provided with a cavity air inlet and a cavity air outlet, the cavity air inlet is used for being connected to a cleaning steam discharge port of the corresponding laser cleaning cavity, cleaning steam is fed into the cooling cavity to be cooled and condensed into solid particles, and the cavity air outlet is used for discharging residual gas; the noble metal recovery module further comprises a gas flow generating device for generating a gas flow from the laser cleaning chamber to the cooling chamber in a pumping and/or blowing manner. The application can solve the problems that the existing surface cleaning mode of the welding wire/welding belt is easy to cause solder waste and increase cost.
Description
Technical Field
The application relates to surface cleaning of welding wires/welding strips, in particular to welding wire/welding strip laser cleaning equipment and a precious metal recovery module thereof.
Background
Solder such as welding wires and welding strips is widely used in the field of welding, and particularly noble metal solder containing noble metals is widely used in the fields of aerospace, navigation ships, precision instruments, refrigeration home appliances, electronic information and the like. A typical production process of the welding wire/welding strip is shown in fig. 1, raw materials are smelted by a smelting device and then extruded into a wire blank by an extruding device, the wire blank is repeatedly drawn by a drawing device, stress is eliminated between the two drawing processes by a heat treatment device when required, the welding wire is cleaned after the welding wire is close to the finished product, the final drawing with small deformation amount can be performed after the cleaning, and finally the welding wire is wound into a disc by a disc winding device to form a finished product, or the finished product is formed by ring making by a ring making device. The cleaning device is used for cleaning oil stains attached to the surface of the welding wire/welding belt in the production process and oxide scales formed on the surface of the welding wire/welding belt after heat treatment, so that the stability of the welding process is prevented from being influenced or impurities are introduced into the welding seam to influence the joint performance.
The traditional surface cleaning method of the welding wire/welding belt is chemical cleaning, for example, a welding wire surface treatment mode adopted in the preparation method of the magnesium alloy welding wire disclosed in patent document CN109570826B adopts on-line acetone gasification spray to clean the surface of the welding wire, remove greasy dirt and dust, and is matched with an on-line belt winding cleaning device to carry out surface treatment on the welding wire. And mechanically cleaning the oxide skin on the surface of the wire billet extruded by the ingot by adopting an automatic wire brush mechanical cleaning device. However, mechanical cleaning is not suitable for welding wires with high surface finish requirements, and for solders containing precious metals, precious metals can be scraped off, resulting in precious metal wastage. Another cleaning mode in the prior art is water cleaning, wherein acid or cleaning agent is added into water to clean the surface of the welding wire/welding belt, so that oxides, greasy dirt and dust can be removed. However, noble metals are dissolved in acid liquor in the water cleaning process, so that the solubility is low, the extraction is difficult, and the problem of noble metal waste is also caused.
In addition, the chemical agent used in the existing chemical cleaning mode needs to be subjected to purification treatment, water and soil pollution is easy to cause, drying is needed after cleaning, and the whole production beat is slow, the efficiency is low and the production cost is high. Particularly for the seamed flux-cored wire, the traditional chemical cleaning mode can cause the flux-cored wire to absorb water and become damp, and the flux-cored wire is easy to cause flux-cored caking after subsequent drying, so that the flux-cored wire is invalid.
The laser cleaning is a novel cleaning mode, can remove greasy dirt, oxide skin and the like on the surface of an object, and does not cause moisture absorption and absorption of the flux core, for example, a welding wire surface dirt laser cleaning method disclosed in patent document CN 109772820A. However, the metal oxide is gasified in the laser cleaning process, and the noble metal solder is gasified to a certain extent, which also causes the loss and waste of noble metal and the increase of cost.
Disclosure of Invention
The application aims to provide welding wire/welding strip laser cleaning equipment, which solves the problems that the existing welding wire/welding strip surface cleaning mode is easy to cause solder waste and increase cost. Another object of the present application is to provide a noble metal recovery module of a welding wire/ribbon laser cleaning apparatus, which solves the problems of easy noble metal waste and high cost when cleaning welding wires/ribbons by laser.
The application adopts the following technical scheme:
the noble metal recovery module of the welding wire/welding belt laser cleaning equipment comprises a cooling cavity, wherein the cooling cavity is provided with a cavity air inlet and a cavity air outlet, the cavity air inlet is used for being connected to a cleaning steam discharge port of the corresponding laser cleaning cavity, cleaning steam enters the cooling cavity to be cooled and condensed into solid particles, and the cavity air outlet is used for discharging residual gas; the noble metal recovery module further comprises a gas flow generating device for generating a gas flow from the laser cleaning chamber to the cooling chamber in a pumping and/or blowing manner.
The beneficial effects are that: by adopting the technical scheme, the solder alloy vapor and the solder oxide vapor generated by laser cleaning can enter the cooling cavity under the drive of the air flow generated by the air flow generating device, and can be cooled and condensed into solid particles after entering the cooling cavity, so that the solder can be recycled.
Further: the cooling chamber comprises more than two compartments arranged in series, each compartment for forming a different temperature gradient.
The beneficial effects are that: by adopting the technical scheme, the grading recovery can be realized by means of the characteristic that the melting points of different vapor components are different, and the solid particles with different components are recovered by different compartments, so that the distinction and the subsequent sorting utilization of the solder alloy vapor and the solder oxide vapor are facilitated.
Further: in the compartments near one side of the chamber air inlet, at least one compartment is provided with a heating device; and/or in the compartments near the side of the air outlet of the chamber, at least one compartment is provided with a cooling device.
The beneficial effects are that: the temperature of each compartment can be adjusted by arranging the heating device and/or the cooling device, and the distinction between the solder alloy vapor and the solder oxide vapor can be realized more accurately.
Further: the air flow paths between the adjacent compartments are provided with compartment screens for preventing particles generated in the corresponding compartments from entering the next compartment.
The beneficial effects are that: by adopting the technical scheme, the recovered solid particles can be distinguished, and the subsequent utilization is convenient.
Further: the compartments are arranged in a stacked manner, and the compartment inlets of adjacent compartments are staggered from each other.
The beneficial effects are that: by adopting the technical scheme, the cooling path is prolonged, and the coagulation effect of the solid particles is improved.
Further: the air flow generating device is a negative pressure device and is connected to the chamber air outlet of the cooling chamber.
The beneficial effects are that: by adopting the technical scheme, the cleaning steam is fully collected, and the outward scattering is avoided.
The welding wire/welding strip laser cleaning equipment comprises a laser and a laser emitting head, and further comprises a laser cleaning chamber, wherein a welding flux penetrating opening and a welding flux penetrating opening for the welding wire/welding strip to penetrate through are formed in the laser cleaning chamber, a laser incident window for laser generated by the laser to emit into for cleaning the welding wire/welding strip, and a cleaning steam outlet for discharging cleaning steam generated in the process of cleaning the welding flux by the laser; the welding wire/welding strip laser cleaning device also comprises a noble metal recovery module, wherein the noble metal recovery module comprises a cooling cavity, the cooling cavity is provided with a cavity air inlet and a cavity air outlet, the cavity air inlet is used for being connected to a cleaning steam discharge port of the corresponding laser cleaning chamber, cleaning steam is fed into the cooling cavity to be cooled and condensed into solid particles, and the cavity air outlet is used for discharging residual gas; the noble metal recovery module further comprises a gas flow generating device for generating a gas flow from the laser cleaning chamber to the cooling chamber in a pumping and/or blowing manner.
The beneficial effects are that: by adopting the technical scheme, the solder alloy vapor and the solder oxide vapor generated by laser cleaning can enter the cooling cavity under the drive of the air flow generated by the air flow generating device, and can be cooled and condensed into solid particles after entering the cooling cavity, so that the solder can be recycled.
Further: the cooling chamber comprises more than two compartments arranged in series, each compartment for forming a different temperature gradient.
The beneficial effects are that: by adopting the technical scheme, the grading recovery can be realized by means of the characteristic that the melting points of different vapor components are different, and the solid particles with different components are recovered by different compartments, so that the distinction and the subsequent sorting utilization of the solder alloy vapor and the solder oxide vapor are facilitated.
Further: in the compartments near one side of the chamber air inlet, at least one compartment is provided with a heating device; and/or in the compartments near the side of the air outlet of the chamber, at least one compartment is provided with a cooling device.
The beneficial effects are that: the temperature of each compartment can be adjusted by arranging the heating device and/or the cooling device, and the distinction between the solder alloy vapor and the solder oxide vapor can be realized more accurately.
Further: the air flow paths between the adjacent compartments are provided with compartment screens for preventing particles generated in the corresponding compartments from entering the next compartment.
The beneficial effects are that: by adopting the technical scheme, the recovered solid particles can be distinguished, and the subsequent utilization is convenient.
Further: the compartments are arranged in a stacked manner, and the compartment inlets of adjacent compartments are staggered from each other.
The beneficial effects are that: by adopting the technical scheme, the cooling path is prolonged, and the coagulation effect of the solid particles is improved.
Further: the air flow generating device is a negative pressure device and is connected to the chamber air outlet of the cooling chamber.
The beneficial effects are that: by adopting the technical scheme, the cleaning steam is fully collected, and the outward scattering is avoided.
Further: the bottom of the laser cleaning chamber is provided with a discharge hole for discharging solid collected matters in the laser cleaning chamber.
The beneficial effects are that: and a discharge hole is arranged to facilitate the recovery operation of solid particles in the laser cleaning chamber.
Further: the laser entrance window is formed by a lens on the laser cleaning chamber.
The beneficial effects are that: by adopting the technical scheme, the laser beam can be protected, light irradiation is avoided, and the sealing performance of the laser cleaning chamber can be ensured.
Further: an outlet side filter screen is arranged at the cleaning steam outlet of the laser cleaning chamber.
The beneficial effects are that: by adopting the technical scheme, the solid particles in the laser cleaning chamber and the cooling chamber are favorably distinguished, and the follow-up utilization is facilitated.
Drawings
FIG. 1 is a simplified flow diagram of a prior art wire/ribbon production line;
FIG. 2 is a schematic view of the structure of example 1 of the welding wire/ribbon laser cleaning apparatus of the present application;
FIG. 3 is a schematic illustration of a self-rotation generating mode of a welding wire;
fig. 4 is a schematic structural view of example 2 of the welding wire/ribbon laser cleaning apparatus of the present application.
The names of the corresponding components in the figures are: 11. a laser cleaning chamber; 12. a lens; 13. a discharge port; 14. a mounting base; 15. an outlet side filter screen; 21. a lens shield; 22. a laser emitting head; 23. a laser; 31. a noble metal recovery module; 32. a compartment; 34. a first-stage filter screen; 35. a second-stage filter screen; 36. three-stage filter screen; 37. a fourth-stage filter screen; 38. a fifth-stage filter screen; 39. a chamber air inlet; 310. a chamber air outlet; 41. an air flow generating device; 51. a guide wheel; 61. welding wire/ribbon; 71. a wire drawing die; 72. an unreeling device; 73. a mounting base; 74. drawing a rotary support; 75. a motor; 81. a winding device; 82. rolling the rotary support; 83. and a winding device seat.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the application, i.e., the embodiments described are merely some, but not all, of the embodiments of the application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present application.
It is noted that relational terms such as first and second, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises a depicted element.
In the description of the present application, the terms "mounted," "connected," "coupled," and "connected," as may be used broadly, and may be connected, for example, fixedly, detachably, or integrally, unless otherwise specifically defined and limited; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art in specific cases.
In the description of the present application, unless explicitly stated and limited otherwise, the term "provided" as may occur, for example, as an object of "provided" may be a part of a body, may be separately arranged from the body, and may be connected to the body, and may be detachably connected or may be non-detachably connected. The specific meaning of the above terms in the present application can be understood by those skilled in the art in specific cases.
The present application is described in further detail below with reference to examples.
Example 1 of a welding wire/ribbon laser cleaning apparatus in the present application:
as shown in fig. 2, the wire/ribbon laser cleaning apparatus includes a laser cleaning module for cleaning the surface of the wire/ribbon, which is mainly formed of a laser 23, a laser exit head 22 and a laser cleaning chamber 11, and a noble metal recovery module 31 for treating vapor generated during laser cleaning to recover noble metals. In use, the noble metal recovery module 31 is connected to the gas flow generator 41, and the gas flow generator 41 is a negative pressure device, so that the gas flow from the laser cleaning chamber 11 to the noble metal recovery module 31 can be generated by suction.
The laser cleaning chamber 11 is fixed on the mounting base 14 and is of a closed structure, but is not sealed, and can be communicated with the outside through a gap between the chamber walls of the laser cleaning chamber 11 and is matched with a negative pressure device to form air flow. Of course, the laser cleaning chamber 11 may be provided in a sealed structure, and may be completely sealed when provided in a sealed structure, or may be provided with an air inlet alone to form an air flow with a larger flow rate. The two opposite side walls of the laser cleaning chamber 11 are respectively provided with a solder penetrating opening and a solder penetrating opening for the welding wire/ribbon 61 to pass through from the laser cleaning chamber 11. The solder penetrating opening and the solder penetrating opening are respectively and correspondingly provided with a pair of guide wheels 51, the guide wheels 51 are provided with semicircular grooves, and the grooves on the pair of guide wheels 51 are paired to form guide holes for positioning the welding wire/welding strip 61 and are used for guiding the welding wire/welding strip 61, so that the welding wire/welding strip 61 can accurately and stably pass through the solder penetrating opening and the solder penetrating opening. Of course, when the laser cleaning chamber 11 is provided with a sealing structure, such as a seal ring, needs to be provided between the wire/ribbon 61 and the solder passing-in port and the solder passing-out port to satisfy the sealing requirement.
The top of the laser cleaning chamber 11 is provided with a lens 12, and the lens 12 forms a laser incident window for the laser generated by the laser system to be emitted into the laser cleaning chamber 11 to clean the welding wire/welding strip 61. The laser system comprises a laser emergent head 22 and a laser 23, and also comprises a lens protective cover 21, wherein the lens protective cover 21 is arranged at a laser incident window to protect a laser head; the laser light generated by the laser 23 is sent to the laser light emitting head 22, and is further irradiated onto the wire/ribbon 61 through the laser light incident window. The lens 12 adopts a high light transmission lens module, can protect laser beams, avoid light irradiation and the like, and can also ensure the sealing performance of the laser cleaning chamber 11. The laser cleaning chamber 11 can be used for collecting noble metal particles contained in solid particles, and can also be used for protecting laser from damage caused by laser irradiation or reflection. The laser cleaning is the prior art, and it is needless to say that the parameters such as peak power, pulse width, pulse frequency, working distance, cleaning width of the laser, and running speed of the wire/ribbon 61 should be matched with each other. In other embodiments, the opening provided in the laser cleaning chamber 11 may be directly used as the laser light incident window without providing a lens. Of course, in this case, a negative pressure air suction is required to form an air flow from the laser cleaning chamber 11 to the cooling chamber, so that the leakage of vapor from the opening as the laser light incident window due to the positive pressure air discharge is avoided, and the precious metal cannot be sufficiently recovered.
As shown in fig. 2, the noble metal recovery module 31 includes a cooling chamber including five compartments 32, each compartment 32 being distributed in the up-down direction, and being arranged in series in turn. The bottom of each compartment 32 is provided with a compartment inlet which is also the inlet of the entire cooling chamber or the compartment outlet of the compartment of the previous stage. To extend the cooling path and increase the cooling efficiency, the cell inlets of adjacent cells 32 are offset from each other and staggered left and right in the orientation shown in fig. 2.
Compartment screens, which are ultrafine screens for filtering noble metal alloy particles and noble metal oxide particles, are provided on the gas flow paths between adjacent compartments 32. The compartment filter screens are five-stage, namely a first-stage filter screen 34, a second-stage filter screen 35, a third-stage filter screen 36, a fourth-stage filter screen 37 and a fifth-stage filter screen 38 in sequence from bottom to top; an outlet-side filter screen 15 is provided at the cleaning vapor outlet of the laser cleaning chamber 11. The compartment screen and the outlet side screen 15 are used to achieve a staged collection of particulate matter, specifically, the outlet side screen 15 can filter out solid particles such as noble metal oxides peeled off from the surface of the wire/ribbon 61 and collect them in the laser cleaning chamber 11; the compartment screen achieves staged cooling and screen filtration using the different melting points of the precious metal alloy and precious metal oxide, which is generally lower than the melting point of the precious metal oxide, so that the precious metal oxide solidifies first, is collected in the compartment 32 on the side closer to the chamber inlet 39, solidifies after solidification, and is collected in the compartment 32 farther from the chamber inlet 39. Preferably, the compartment screen is a multi-layer ultrafine screen. Of course, impurities are inevitably present in each compartment 32, for example noble metal alloy particles may be present in the compartment 32 on the side closer to the chamber inlet 39, and a portion of noble metal oxide particles may be present in the compartment 32 further from the chamber inlet 39.
When in use, the guide wheel 51 drives the welding wire/welding strip 61 to pass through the laser cleaning chamber 11, and the welding wire is cleaned on line by using a laser system to remove oil stains and oxides on the surface of the welding wire; before laser cleaning, the laser spot position is adjusted to enable the laser spot to completely cover the solder, and parameters such as peak laser power, pulse width, pulse frequency, working distance, cleaning width, drawing speed and the like are set. When the cleaning is started, the noble metal recovery module and the laser cleaning equipment are started to perform the online cleaning of the welding flux. The difference between the melting points of the solder alloy and the solder oxide is large, the liquidus line of the solder alloy is generally seven-eight hundred degrees, and the melting point of the solder oxide is generally more than one thousand four-five hundred degrees, so that the above-mentioned noble metal recovery module can be used to roughly distinguish the solder alloy from the solder oxide. During the cleaning process, the cleaning vapor, the gas generated during the cleaning of the greasy dirt, and the like are sucked into the noble metal recovery module 31 through the outlet-side filter screen 15 by the negative pressure device, and the outlet-side filter screen 15 can filter out the solid particles such as noble metal oxides peeled off from the surface of the welding wire, and collect the solid particles in the laser cleaning chamber 11. The cleaning vapor is solder alloy vapor and solder oxide vapor generated during laser cleaning of the solder, and the solder alloy vapor and the solder oxide vapor are gradually cooled to realize graded collection under the filtering action of the compartment filter screen. The collected noble metal alloy can be directly used for smelting or other industrial production, and the collected noble metal oxide can be used for smelting or other industrial production after simple chemical extraction, so that the effective recycling of noble metal is realized.
If the precise distinction between the solder alloy and the solder oxide is desired, the temperature of different compartments can be precisely controlled, for example, heating pipes are arranged on the walls of the corresponding compartments, so that the temperatures of the primary compartment and the secondary compartment are kept at about 900 ℃ or 1000 ℃, the alloy vapor is ensured not to be liquefied, the gas state is kept, the cooling distance of the oxide is increased, and the phenomenon that part of the oxide vapor escapes to an alloy collecting area after passing through the primary compartment due to the fact that the temperature of the compartment is higher and the temperature of the oxide is not reduced below the melting point is avoided; the three-stage, four-stage and five-stage compartments can be provided with cooling devices without installing heating devices, so that the alloy vapor can be naturally cooled, and the alloy vapor can be rapidly cooled. 3. The cooling distance can be increased by the action of the fourth and fifth-stage compartments, so that the waste of materials caused by the fact that solder alloy vapor or solder oxide vapor which is not liquefied and solidified into solid particles in the first compartments is sucked into the negative pressure device is avoided.
In order to realize complete cleaning of the whole peripheral surface of the welding wire, the welding wire automatically rotates around the axis thereof in the wire running process, and the full-coverage cleaning of the outer surface of the welding wire can be realized only by one pass through the processing chamber 10. In order to cause the wire to self-rotate about its own axis during walking, as shown in fig. 3, a wire-drawing die 71 at the drawing device is fixed to a mount 73, an unreeling device 72 is rotatably mounted to the mount 73 by a rotation shaft perpendicular to the paper surface, and the mount 73 is rotatably mounted to a drawing rotation support 74 about a horizontal axis parallel to the paper surface. The motor 75 drives the mounting seat 73 to rotate around a horizontal axis parallel to the paper surface, so that the wire drawing die 71 and the wire feeding disc 72 rotate, and finally, the welding wire rotates around the axis of the wire drawing die. Meanwhile, the winding device 81 is rotatably assembled on the winding device seat 83 through a rotating shaft perpendicular to the paper surface, and the winding device seat 83 is rotatably assembled on the winding rotating support 82 along a horizontal axis parallel to the paper surface. The winding device seat 83 is driven by a motor to rotate synchronously with the mounting seat 73, so as to avoid twisting of the welding wire around the axis of the welding wire.
Example 2 of a welding wire/ribbon laser cleaning apparatus in the present application:
this embodiment differs from embodiment 1 in that the cooling chamber in embodiment 1 includes two or more compartments 32, whereas in this embodiment the cooling chamber is formed by only one compartment 32.
Of course, in other embodiments, the number of the compartments 32 may be increased or decreased as needed, the compartments 32 may take shapes other than square in embodiment 1, and the compartments 32 may be horizontally arranged.
Example 3 of welding wire/ribbon laser cleaning apparatus in the present application:
this embodiment differs from embodiment 1 in that in embodiment 1 a compartment screen is provided between adjacent compartments 32 and the chamber inlet 39 of the cooling chamber is provided with an outlet side screen 15, whereas in this embodiment the adjacent compartments 32 are in direct communication and are not isolated by the screen.
Example 4 of a welding wire/ribbon laser cleaning apparatus in the present application:
the present embodiment is different from embodiment 1 in that in embodiment 1, the cell inlets of the adjacent two cells 32 are offset from each other left and right, whereas in the present embodiment, the cell inlets of the adjacent two cells 32 are arranged at intervals in the front-rear direction perpendicular to the paper surface. In other embodiments, the compartment inlets of adjacent compartments 32 may be disposed one in the middle of the compartment 32 and the other on the side of the compartment 32.
Example 5 of welding wire/ribbon laser cleaning apparatus in the present application:
the present embodiment is different from embodiment 1 in that in embodiment 1, the air flow generating device 41 is a negative pressure device, whereas in this embodiment, as shown in fig. 4, the air flow generating device is a positive pressure device, which is connected to the laser cleaning chamber 11 and can form an air flow from the laser cleaning chamber to the cooling chamber in a blowing manner.
The wire/ribbon laser cleaning apparatus of the present application will be further described below by way of specific examples of use.
Using example 1:
this use example uses the wire/ribbon laser cleaning apparatus described above to clean a BAg50CuZn wire. The method specifically comprises the following steps:
1) Passing a BAg50CuZn welding wire through the laser cleaning chamber 11; the diameter of the welding wire is phi 1.0mm;
2) Adjusting the position of the laser emergent head 22 to enable the laser spot to completely cover the welding wire;
3) Setting parameters, setting the peak laser power to 80W, setting the pulse width to 20%, setting the pulse frequency to 15kHz, setting the working distance to 20mm, setting the cleaning width to 1.5mm, and setting the solder travelling speed to 3m/min;
4) Starting equipment, in the online cleaning process, introducing noble metal alloy cleaning vapor and noble metal oxide cleaning vapor into a cooling cavity, cooling the cleaning vapor and condensing the cleaning vapor into solid particles in the cooling cavity, and collecting noble metals contained in the solid particles; the oxides of Cu and Zn (CuO melting point 1446 ℃ C., znO melting point 1975 ℃ C.) are mainly collected between the outlet side screen 15 and the primary screen 34; BAg50CuZn alloy particles (alloy melting interval is 690-775 ℃) are mainly arranged between the secondary filter screen 35 and the tertiary filter screen 36; the gas generated by the greasy dirt is discharged after being treated through the chamber gas outlet 310 (the boiling point of the greasy dirt is 100-200 ℃); the laser cleaning chamber 11 is mainly made of Ag, cu, zn oxide which is laser-blasted.
Using example 2:
this use example used the above-described wire/ribbon laser cleaning apparatus to clean a BAg30 flux-cored silver wire. The method specifically comprises the following steps:
1) Passing a BAg30 flux-cored silver wire through the laser cleaning chamber 11; the diameter of the welding wire is phi 1.6mm;
2) Adjusting the position of the laser emergent head 22 to enable the laser spot to completely cover the welding wire;
3) Setting parameters, setting the peak laser power to be 60W, setting the pulse width to be 30 percent, setting the pulse frequency to be 30kHz, setting the working distance to be 30mm, setting the cleaning width to be 3mm, and setting the solder travelling speed to be 2m/min;
4) Starting equipment, in the online cleaning process, introducing noble metal alloy cleaning vapor and noble metal oxide cleaning vapor into a cooling cavity, cooling the cleaning vapor and condensing the cleaning vapor into solid particles in the cooling cavity, and collecting noble metals contained in the solid particles; the oxides of Ag, cu and Zn are mainly collected between the laser cleaning chamber 11, the outlet side filter screen 15 and the primary filter screen 34; the alloy particles of the BAg30 are mainly collected between the secondary filter screen 35 and the tertiary filter screen 36 (the melting temperature interval of the BAg30 is 690-780 ℃); the gas generated by the greasy dirt is discharged after being treated through the chamber gas outlet 310.
Using example 3:
this use example uses the wire/ribbon laser cleaning apparatus described above to clean the BAg616 ribbon. The method specifically comprises the following steps:
1) Passing a BAg616 welding strip through the laser cleaning chamber 11, wherein the width of the BAg616 welding strip is 20mm, and the thickness of the BAg616 welding strip is 0.25mm;
2) Adjusting the position of the laser emergent head 22 to enable the laser spot to completely cover the welding strip;
3) Setting parameters, setting the peak laser power to be 100W, setting the pulse width to be 50%, setting the pulse frequency to be 50kHz, setting the working distance to be 40mm, setting the cleaning width to be 40mm, and setting the drawing speed to be 1m/min;
4) Starting equipment, in the online cleaning process, introducing noble metal alloy cleaning vapor and noble metal oxide cleaning vapor into a cooling cavity, cooling the cleaning vapor and condensing the cleaning vapor into solid particles in the cooling cavity, and collecting noble metals contained in the solid particles; the oxide of mainly Ag, cu, zn, ni (NiO has a melting point of 1990 ℃) collected between the laser cleaning chamber 11 and the outlet-side screen 15 and the primary screen 34; the primary BAg616 alloy particles are collected between the primary filter screen 34 and the secondary filter screen 35 (the melting temperature interval of the BAg616 is 600-695 ℃); the gas generated by the greasy dirt is discharged after being treated through the chamber gas outlet 310;
5) Steps 1 to 4 are repeated and the other side of the weld strip is cleaned.
Embodiments of noble metal recovery modules for welding wire/ribbon laser cleaning apparatus in the present application: the noble metal recovery module of the welding wire/ribbon laser cleaning apparatus, which is described in any of the embodiments of the welding wire/ribbon laser cleaning apparatus, is not described in detail herein.
The above description is only a preferred embodiment of the present application, and the patent protection scope of the present application is defined by the claims, and all equivalent structural changes made by the specification and the drawings of the present application should be included in the protection scope of the present application.
Claims (9)
1. Noble metal recovery module of welding wire/welding strip laser cleaning equipment, characterized in that the noble metal recovery module (31) comprises a cooling chamber, the cooling chamber is provided with a chamber air inlet (39) and a chamber air outlet (310), the chamber air inlet (39) is used for being connected to a cleaning steam outlet of a corresponding laser cleaning chamber (11) for cleaning steam to enter the cooling chamber to be cooled and condensed into solid particles, and the chamber air outlet (310) is used for discharging residual gas; the precious metal recovery module (31) further comprises gas flow generating means (41) for generating a gas flow from the laser cleaning chamber (11) to a cooling chamber in a pumping and/or blowing manner, said cooling chamber comprising more than two compartments (32) arranged in series, each compartment (32) being adapted to form a different temperature gradient, a compartment (32) having a high temperature being adapted to collect solder oxides and a compartment (32) having a low temperature being adapted to collect solder alloys.
2. The precious metal recovery module of a welding wire/ribbon laser cleaning apparatus according to claim 1, characterized in that in the compartment (32) on the side close to the chamber air inlet (39), at least one compartment (32) is provided with heating means; and/or in the compartments (32) on the side close to the chamber outlet (310), at least one compartment (32) is provided with cooling means.
3. The noble metal recovery module of a wire/ribbon laser cleaning apparatus of claim 1, wherein a compartment screen for preventing particulate matter generated in the corresponding compartment (32) from entering the next compartment (32) is provided in an airflow path between adjacent compartments (32).
4. A precious metal recovery module of a welding wire/ribbon laser cleaning apparatus according to claim 1 or 2 or 3, characterized in that the compartments (32) are arranged in a stack, the compartment inlets of adjacent compartments (32) being offset from each other.
5. A precious metal recovery module of a welding wire/ribbon laser cleaning apparatus according to claim 1 or 2 or 3, characterized in that the gas flow generating means (41) is a negative pressure means connected to the chamber gas outlet (310) of the cooling chamber.
6. The welding wire/welding strip laser cleaning equipment comprises a laser (23) and a laser emitting head (22), and is characterized by further comprising a laser cleaning chamber (11), wherein the laser cleaning chamber (11) is provided with a welding flux penetrating opening and a welding flux penetrating opening for the welding wire/welding strip to penetrate through, a laser incident window for the laser generated by the laser (23) to enter for cleaning the welding wire/welding strip, and a cleaning steam outlet for discharging cleaning steam generated in the process of cleaning the welding flux by the laser; the wire/ribbon laser cleaning apparatus further comprising a precious metal recovery module (31) according to any one of claims 1 to 5.
7. The welding wire/ribbon laser cleaning apparatus according to claim 6, characterized in that a discharge opening (13) is provided at the bottom of the laser cleaning chamber (11) for discharging solid collected matter inside the laser cleaning chamber (11).
8. The welding wire/ribbon laser cleaning apparatus of claim 6 wherein the laser entrance window is formed by a lens (12) on the laser cleaning chamber (11).
9. The welding wire/ribbon laser cleaning apparatus of claim 6 wherein an outlet side screen (15) is provided at the cleaning vapor outlet of the laser cleaning chamber (11).
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| CN202210508014.9A CN114904846B (en) | 2022-05-10 | 2022-05-10 | Welding wire/welding strip laser cleaning equipment and precious metal recovery module thereof |
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| CN202210508014.9A CN114904846B (en) | 2022-05-10 | 2022-05-10 | Welding wire/welding strip laser cleaning equipment and precious metal recovery module thereof |
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| CN114904846B true CN114904846B (en) | 2023-08-25 |
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| CN114904846A (en) | 2022-08-16 |
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