CN114904846A - 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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- CN114904846A CN114904846A CN202210508014.9A CN202210508014A CN114904846A CN 114904846 A CN114904846 A CN 114904846A CN 202210508014 A CN202210508014 A CN 202210508014A CN 114904846 A CN114904846 A CN 114904846A
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention relates to surface cleaning of a welding wire/welding strip, in particular to a laser cleaning device of the welding wire/welding strip and a precious metal recovery module thereof. The precious metal recovery module of the welding wire/welding strip laser cleaning equipment comprises a cooling chamber, wherein the cooling chamber is provided with a chamber air inlet and a chamber air outlet, the chamber air inlet is connected to a cleaning steam discharge port of a corresponding laser cleaning chamber and used for allowing cleaning steam to enter the cooling chamber for cooling and condensing into solid particles, and the chamber air outlet is used for discharging residual gas; the precious metal recovery module further comprises a gas flow generating device for forming a gas flow from the laser cleaning chamber to the cooling chamber in a pumping and/or blowing manner. The invention can solve the problems that the existing surface cleaning mode of the welding wire/welding strip easily causes solder waste and increases cost.
Description
Technical Field
The invention relates to surface cleaning of a welding wire/welding strip, in particular to a laser cleaning device of the welding wire/welding strip and a precious metal recovery module thereof.
Background
Welding materials such as welding wires and welding strips are widely used in the field of welding, and particularly, noble metal welding materials containing noble metals are widely used in the fields of aerospace, navigation ships, precision instruments, refrigeration household appliances, electronic information and the like. The typical production process of the welding wire/welding strip is shown in figure 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, when needed, the stress between two drawing processes is eliminated by a heat treatment device, the wire to be welded is cleaned after the size of the wire to be welded is close to the size of a finished product, the final drawing with small deformation can be carried out if needed after the cleaning, and finally the wire is wound into a disc by a disc winding device to form the finished product, or the ring is manufactured by a ring manufacturing device to form the finished product. The cleaning device is used for cleaning oil stains attached to the surface of the welding wire/welding strip in the production process and oxide scales formed on the surface of the welding wire/welding strip after heat treatment, so that the influence on the stability of the welding process or the influence on the performance of a joint caused by the introduction of impurities into a welding seam is avoided.
The traditional method for cleaning the surface of the welding wire/welding strip is chemical cleaning, for example, in a welding wire surface treatment method adopted in a preparation method of a magnesium alloy welding wire disclosed in patent document CN109570826B, the surface of the welding wire is cleaned by on-line acetone gasification spray, oil stains and dust are removed, and the welding wire is subjected to surface treatment by matching with an on-line strip-winding cleaning device. And mechanically cleaning the oxide skin on the surface of the wire blank extruded by the cast ingot by using an automatic steel wire brush mechanical cleaning device. However, mechanical cleaning is not suitable for welding wires requiring high surface finish, and for solders containing precious metals, results in precious metal being scraped off, resulting in precious metal waste. Another cleaning method in the prior art is water cleaning, which is to add acid or cleaning agent into water to clean the surface of the welding wire/welding strip, and can remove oxides, oil stains and dust. However, in the water cleaning process, noble metals are dissolved in acid liquor, so that the solubility is low, the extraction is difficult, and the noble metals are wasted.
In addition, chemical agents used in the existing chemical cleaning mode need to be purified, water and soil pollution is easily caused, drying is needed after cleaning, and the whole production cycle is slow, the efficiency is low, and the production cost is high. Particularly for seamed flux-cored wires, the traditional chemical cleaning mode can cause the flux core to absorb water and become damp, and the flux core is easy to agglomerate after subsequent drying, so that the flux core fails.
The laser cleaning is a novel cleaning method, which can remove oil stains, oxide scales and the like on the surface of an object and does not cause moisture absorption of a flux core, and for example, a method for cleaning dirt on the surface of a welding wire by using laser is disclosed in patent document CN 109772820A. However, the metal oxide is vaporized during the laser cleaning process, and the noble metal solder is also vaporized to a certain extent, which also results in loss and waste of the noble metal and increase of the cost.
Disclosure of Invention
The invention aims to provide welding wire/welding strip laser cleaning equipment, which solves the problems that the existing welding wire/welding strip surface cleaning mode easily causes solder waste and increases the cost. The invention also aims to provide a precious metal recovery module of the welding wire/welding strip laser cleaning equipment, which solves the problems of precious metal waste and high cost easily caused when the welding wire/welding strip is cleaned by laser.
The invention adopts the following technical scheme:
the noble metal recovery module of the welding wire/welding strip laser cleaning equipment comprises a cooling chamber, wherein the cooling chamber is provided with a chamber air inlet and a chamber air outlet, the chamber air inlet is connected to a cleaning steam discharge port of the corresponding laser cleaning chamber, so that the cleaning steam enters the cooling chamber to be cooled and condensed into solid particles, and the chamber air outlet is used for discharging residual gas; the precious metal recovery module further comprises a gas flow generating device for forming a gas flow from the laser cleaning chamber to the cooling chamber in a pumping and/or blowing manner.
Has the advantages that: adopt above-mentioned technical scheme, solder alloy vapour and solder oxide vapour that laser cleaning produced can get into the cooling chamber under the drive of the air current that the air current generating device produced after, get into the cooling chamber, solder alloy vapour and solder oxide vapour can be cooled and condense into solid particle, realize the recycle to the solder, compare with prior art, can avoid the solder of vapour form by direct discharge, can realize the recovery of solder, are favorable to reduce cost.
Further: the cooling chamber comprises more than two compartments arranged in series, each compartment being adapted to form a different temperature gradient.
Has the advantages that: by adopting the technical scheme, graded recovery can be realized by depending on the characteristics of different melting points of different steam components, and solid particles with different components are recovered in different compartments, so that the solder alloy steam and the solder oxide steam can be conveniently distinguished and subsequently classified and utilized.
Further: at least one compartment in the compartment close to one side of the air inlet of the chamber is provided with a heating device; and/or cooling devices are arranged on at least one of the compartments on the side close to the air outlet of the chamber.
Has the beneficial effects that: by providing heating means and/or cooling means, the temperature of each compartment can be adjusted, enabling a more precise differentiation of solder alloy vapors and solder oxide vapors.
Further: a compartment screen for preventing the particulate matter produced in the corresponding compartment from entering the compartment of the next stage is provided on the air flow path between the adjacent compartments.
Has the advantages that: by adopting the technical scheme, the recycled solid particles can be distinguished conveniently, and the subsequent utilization is facilitated.
Further: the compartments are arranged in a stack with compartment inlets of adjacent compartments being staggered with respect to each other.
Has the advantages that: by adopting the technical scheme, the cooling path can be prolonged, and the condensation effect of solid particles can be improved.
Further: the airflow generating device is a negative pressure device and is connected to the air outlet of the cavity of the cooling cavity.
Has the advantages that: adopt above-mentioned technical scheme to be favorable to wasing abundant collection of vapour, avoid the external scattering.
The welding wire/welding strip laser cleaning equipment comprises a laser device, a laser emitting head and a laser cleaning chamber, wherein the laser cleaning chamber is provided with a welding material penetrating port and a welding material penetrating port through which the welding wire/welding strip penetrates, a laser incident window through which laser generated by the laser device is emitted to clean the welding wire/welding strip, and a cleaning steam outlet through which cleaning steam generated in the process of cleaning the welding material by the laser is discharged; the welding wire/welding strip laser cleaning equipment also comprises a precious metal recovery module, wherein the precious metal recovery module comprises a cooling chamber, the cooling chamber is provided with a chamber air inlet and a chamber air outlet, the chamber air inlet is connected to a cleaning steam discharge port of the corresponding laser cleaning chamber, so that the cleaning steam enters the cooling chamber to be cooled and condensed into solid particles, and the chamber air outlet is used for discharging residual gas; the precious metal recovery module further comprises a gas flow generating device for forming a gas flow from the laser cleaning chamber to the cooling chamber in a pumping and/or blowing manner.
Has the advantages that: adopt above-mentioned technical scheme, solder alloy vapour and solder oxide vapour that laser cleaning produced can get into the cooling chamber under the drive of the air current that the air current generating device produced after, get into the cooling chamber, solder alloy vapour and solder oxide vapour can be cooled and condense into solid particle, realize the recycle to the solder, compare with prior art, can avoid the solder of vapour form by direct discharge, can realize the recovery of solder, are favorable to reduce cost.
Further: the cooling chamber comprises more than two compartments arranged in series, each compartment being adapted to form a different temperature gradient.
Has the advantages that: by adopting the technical scheme, the grading recovery can be realized by depending on the characteristics of different melting points of different steam components, and the solid particles with different components can be recovered in different compartments, so that the solder alloy steam and the solder oxide steam can be distinguished and utilized in subsequent classification.
Further: at least one compartment in the compartment close to one side of the air inlet of the chamber is provided with a heating device; and/or cooling devices are arranged on at least one of the compartments on the side close to the air outlet of the chamber.
Has the advantages that: by providing heating means and/or cooling means, the temperature of each compartment can be adjusted, enabling a more precise differentiation of solder alloy vapors and solder oxide vapors.
Further: a compartment screen for preventing the particulate matter produced in the corresponding compartment from entering the compartment of the next stage is provided on the air flow path between the adjacent compartments.
Has the advantages that: by adopting the technical scheme, the recycled solid particles can be distinguished conveniently, and the subsequent utilization is facilitated.
Further: the compartments are arranged in a stack with compartment inlets of adjacent compartments being staggered with respect to each other.
Has the advantages that: by adopting the technical scheme, the cooling path can be prolonged, and the condensation effect of solid particles can be improved.
Further: the airflow generating device is a negative pressure device and is connected to the air outlet of the chamber of the cooling chamber.
Has the advantages that: adopt above-mentioned technical scheme to be favorable to wasing abundant collection of vapour, avoid the external scattering.
Further: the bottom of laser purge chamber is equipped with the bin outlet, supplies the inside solid collection of laser purge chamber to discharge.
Has the advantages that: the discharge hole is arranged to facilitate the recovery operation of solid particles in the laser cleaning chamber.
Further, the method comprises the following steps: the laser entrance window is formed by a lens on the laser cleaning chamber.
Has the advantages that: by adopting the technical scheme, the laser beam can be protected, the light irradiation is avoided, and the sealing property of the laser cleaning chamber can be ensured.
Further: an outlet side filter screen is arranged at a cleaning steam outlet of the laser cleaning chamber.
Has the advantages that: by adopting the technical scheme, the solid particles in the laser cleaning chamber and the cooling chamber can be distinguished, and the subsequent utilization is facilitated.
Drawings
FIG. 1 is a schematic view of a prior art wire/strip production line;
FIG. 2 is a schematic structural view of an embodiment 1 of the wire/strip laser cleaning apparatus of the present invention;
FIG. 3 is a schematic illustration of a self-rotation generation of a welding wire;
FIG. 4 is a schematic structural view of embodiment 2 of the wire/strip laser cleaning apparatus of the present invention.
The names of the components corresponding to the corresponding reference numerals in the drawings are: 11. a laser cleaning chamber; 12. a lens; 13. a discharge outlet; 14. installing a base; 15. an outlet side filter screen; 21. a lens shield; 22. a laser emitting head; 23. a laser; 31. a precious metal recovery module; 32. a compartment; 34. a first-stage filter screen; 35. a second-stage filter screen; 36. a third-stage filter screen; 37. a four-stage filter screen; 38. a five-stage filter screen; 39. a chamber gas inlet; 310. a chamber air outlet; 41. an airflow generating device; 51. a guide wheel; 61. welding wire/strip; 71. drawing a wire die; 72. an unwinding device; 73. a mounting seat; 74. drawing the rotary support; 75. a motor; 81. a winding device; 82. rolling the rotary support; 83. a coiling device seat.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention 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 present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, which may be present in the embodiments of the present invention, are 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. Also, 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 statement that "comprises an … …" is intended to indicate that there are additional elements of the same process, method, article, or apparatus that comprise the element.
In the description of the invention, unless expressly stated or limited otherwise, the terms "mounted", "connected" and "connected" when used in this context are to be construed broadly, as for example they may be fixedly connected, releasably connected or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the invention, unless otherwise explicitly specified or limited, the term "provided" should be understood broadly, for example, the object provided may be a part of the body, or may be arranged separately from the body and connected to the body, which may or may not be detachable. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
Embodiment 1 of the welding wire/welding strip laser cleaning apparatus of the present invention:
as shown in fig. 2, the welding wire/strip laser cleaning apparatus includes a laser cleaning module for cleaning the surface of the welding wire/strip, which is mainly formed by a laser 23, a laser emitting head 22, and a laser cleaning chamber 11, and a precious metal recovery module 31 for processing vapor generated during the laser cleaning process to recover precious metals. In use, the precious metal recovery module 31 is connected to the gas flow generator 41, and the gas flow generator 41 is a negative pressure device, and can form a gas flow from the laser cleaning chamber 11 to the precious metal recovery module 31 by air suction.
The laser cleaning chamber 11 is fixed on the mounting base 14, is of a closed structure, but is not sealed, and can be communicated with the outside through a gap between chamber walls of the laser cleaning chamber 11 to form air flow by matching with a negative pressure device. Of course, the laser cleaning chamber 11 may be provided with a sealing structure, and when the sealing structure is provided, the laser cleaning chamber may be completely in a sealing state, or an air inlet may be separately provided to form an air flow with a larger flow rate. Two opposite side walls of the laser cleaning chamber 11 are respectively provided with a solder inlet and a solder outlet for the welding wire/welding strip 61 to pass through the laser cleaning chamber 11. The solder penetrating port and the solder penetrating port 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 used for guiding the welding wire/welding strip 61 to ensure that the welding wire/welding strip 61 accurately and stably passes through the solder penetrating port and the solder penetrating port. Of course, when the laser cleaning chamber 11 is provided with a sealing structure, such as a sealing ring, is required between the welding wire/welding strip 61 and the solder inlet and the solder outlet 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 incident into the laser cleaning chamber 11 for cleaning the welding wire/welding strip 61. The laser system comprises a lens protective cover 21 besides a laser emitting head 22 and a laser 23, and 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 fed to the laser emitting head 22 and is irradiated onto the welding wire/strip 61 through the laser incident window. Lens 12 adopts high printing opacity lens module, can protect the laser beam, avoids appearing light irradiation etc. can also guarantee the closure of laser purge chamber 11. Set up laser purge chamber 11 and not only can be used for collecting the noble metal granule that contains in the solid particle, can also be used for protecting laser, avoid laser irradiation or reflection to cause the injury. Laser cleaning is prior art and will not be described in detail here, and of course, parameters such as peak power, pulse width, pulse frequency, working distance, cleaning width, etc. of laser and parameters such as traveling speed of welding wire/welding strip 61 should match each other. In other embodiments, the opening provided in the laser cleaning chamber 11 may be directly used as the laser incident window without providing a lens. Of course, in this case, the airflow from the laser cleaning chamber 11 to the cooling chamber needs to be formed by negative pressure evacuation, so that it is avoided that the vapor leaks from the opening as the laser incidence window by positive pressure evacuation, and the precious metal cannot be sufficiently recovered.
As shown in fig. 2, the precious metal recovery module 31 includes a cooling chamber including five compartments 32, and the compartments 32 are distributed in the up-down direction and are sequentially arranged in series. 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 previous stage compartment. To extend the cooling path and improve cooling efficiency, the compartment inlets of two adjacent compartments 32 are staggered with respect to each other, and are staggered from side to side in the orientation shown in fig. 2.
Compartment screens, which are ultra-fine screens for filtering noble metal alloy particles and noble metal oxide particles, are disposed on the air flow paths between adjacent compartments 32. The compartment filter screens are divided into five stages, 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 from bottom to top; an outlet-side filter 15 is provided at a cleaning vapor outlet of the laser cleaning chamber 11. The compartment filter screen and the outlet-side filter screen 15 are used for achieving the classified collection of particulate matters, and particularly, the outlet-side filter screen 15 can filter out solid particles such as noble metal oxides and the like stripped from the surface of the welding wire/welding strip 61 and collect the solid particles in the laser cleaning chamber 11; the compartment filter screen realizes the grading cooling and the filter screen filtering by utilizing the characteristic that the melting points of the noble metal alloy and the noble metal oxide are different, the melting point of the noble metal alloy is generally lower than that of the noble metal oxide, so the noble metal oxide is firstly solidified and collected in the compartment 32 at one side close to the air inlet 39 of the compartment, and the noble metal alloy is then solidified and collected in the compartment 32 far away from the air inlet 39 of the compartment. Preferably, the compartment screen is a multi-layer ultra-fine screen. Of course, impurities are inevitably present in each compartment 32, for example precious metal alloy particles may be present in the compartment 32 on the side close to the chamber inlet 39 and a portion of precious metal oxide particles may be present in the compartment 32 further from the chamber inlet 39.
When the device is used, 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 position of a laser spot 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. And when cleaning is started, the precious metal recovery module and the laser cleaning equipment are started to clean the solder on line. The melting points of the solder alloy and the solder oxide are greatly different, the liquidus line of the solder alloy is generally seven-eight-hundred degrees, and the melting point of the solder oxide is generally one-thousand-four-five-hundred degrees or more, so that the solder alloy and the solder oxide can be roughly distinguished by the precious metal recovery module. In the cleaning process, cleaning steam, gas generated during oil stain cleaning and the like are sucked into the precious 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 solid particles such as precious metal oxides peeled 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 when the solder is subjected to laser cleaning, and the solder alloy vapor and the solder oxide vapor are gradually cooled to realize graded collection under the filtering action of the filter screen of the compartment. 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 the noble metal is realized.
If the precise distinguishing of the solder alloy and the solder oxide is required, the temperature of different compartments can be precisely controlled, for example, heating pipes are arranged on the cavity walls of the corresponding compartments, so that the temperature of the first-stage compartment and the second-stage compartment is kept at 900 ℃ or 1000 ℃, the alloy steam 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 steam passes through the first-stage compartment due to the higher temperature of the compartments and then the temperature is not reduced below the melting point and escapes to an alloy collecting area is avoided; the third-stage, fourth-stage and fifth-stage compartments are not required to be provided with heating devices, alloy steam can be naturally cooled, and cooling devices can be arranged to rapidly cool the alloy steam. The third, fourth and fifth compartments can also increase the cooling distance, and avoid the solder alloy vapor or solder oxide vapor which is not liquefied and solidified into solid particles in the first compartments from being sucked into the negative pressure device to cause material waste.
In order to realize complete cleaning of the whole peripheral surface of the welding wire, the welding wire is enabled to rotate around the axis of the welding wire in the wire feeding process, and the full-coverage cleaning of the outer surface of the welding wire can be realized only through one time from the treatment chamber 10. In order to make the welding wire generate self-rotation around the axis of the welding wire during the walking process, as shown in fig. 3, a wire drawing die 71 at the drawing device is fixed on a mounting seat 73, an unreeling device 72 is rotatably mounted on the mounting seat 73 through a rotating shaft perpendicular to the paper surface, and the mounting seat 73 is rotatably mounted on a drawing rotating support 74 around a horizontal axis parallel to the paper surface. The mounting base 73 is driven by the motor 75 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 self-rotation of the welding wire around the axis of the welding wire is realized. Meanwhile, the winding device 81 is rotatably mounted on a winding device seat 83 through a rotating shaft perpendicular to the paper surface, and the winding device seat 83 is rotatably mounted on a winding rotary 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 the welding wire from twisting around the axis of the winding device seat.
Embodiment 2 of the welding wire/welding strip laser cleaning apparatus of the present invention:
the present embodiment differs from embodiment 1 in that the cooling chamber in embodiment 1 comprises more than two compartments 32, whereas in the present 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 have a shape other than the square shape in embodiment 1, and the compartments 32 may be arranged horizontally.
Example 3 of the welding wire/welding strip laser cleaning apparatus of the present invention:
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 adjacent compartments 32 are in direct communication without being separated by a screen.
Example 4 of the welding wire/welding strip laser cleaning apparatus of the present invention:
the present embodiment is different from embodiment 1 in that the compartment inlets of two adjacent compartments 32 are staggered from each other in the left-right direction in embodiment 1, but the compartment inlets of two adjacent compartments 32 are arranged at intervals in the front-rear direction perpendicular to the paper surface in this embodiment. In other embodiments, the compartment inlets of two adjacent compartments 32 may be located one in the middle of the compartment 32 and the other in the side of the compartment 32.
Example 5 of the wire/strip laser cleaning apparatus of the present invention:
the present embodiment is different from embodiment 1 in that in embodiment 1, the air flow generating device 41 is a negative pressure device, but in this embodiment, as shown in fig. 4, the air flow generating device is a positive pressure device, and the positive pressure device 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/strip laser cleaning apparatus of the present invention is further described below by way of specific use examples.
Using example 1:
this use example used the wire/strip laser cleaning apparatus described above to clean BAg50CuZn wire. The method specifically comprises the following steps:
1) passing the BAg50CuZn welding wire through a laser cleaning chamber 11; the diameter of the welding wire is phi 1.0 mm;
2) adjusting the position of the laser emitting head 22 to enable the laser spot to completely cover the welding wire;
3) setting parameters, wherein the peak laser power is set to be 80W, the pulse width is 20%, the pulse frequency is 15kHz, the working distance is 20mm, the cleaning width is 1.5mm, and the solder walking speed is 3 m/min;
4) starting equipment, in the online cleaning process, introducing noble metal alloy cleaning steam and noble metal oxide cleaning steam into a cooling chamber, cooling the cleaning steam and condensing the cleaning steam into solid particles in the cooling chamber, and collecting noble metals contained in the solid particles; oxides of Cu and Zn (a melting point of CuO is 1446 ℃ and a melting point of ZnO is 1975 ℃) are mainly collected between the outlet-side filter screen 15 and the first-stage filter screen 34; BAg50CuZn alloy particles are mainly arranged between the second-level filter screen 35 and the third-level filter screen 36 (the alloy melting range is 690-775 ℃); gas generated by the oil stain is treated through a chamber gas outlet 310 and then discharged (the boiling point of the oil stain is 100-200 ℃); the laser cleaning chamber 11 is mainly made of an oxide of Ag, Cu, Zn which is removed by laser shock.
Using example 2:
this use example used the wire/ribbon laser cleaning equipment described above to clean BAg30 flux cored silver wire. The method specifically comprises the following steps:
1) passing BAg30 flux-cored silver wire through laser cleaning chamber 11; the diameter of the welding wire is phi 1.6 mm;
2) adjusting the position of the laser emitting head 22 to enable the laser spot to completely cover the welding wire;
3) setting parameters, wherein the peak laser power is set to be 60W, the pulse width is 30 percent, the pulse frequency is 30kHz, the working distance is 30mm, the cleaning width is 3mm, and the solder walking speed is 2 m/min;
4) starting equipment, in the online cleaning process, introducing noble metal alloy cleaning steam and noble metal oxide cleaning steam into a cooling chamber, cooling the cleaning steam and condensing the cleaning steam into solid particles in the cooling chamber, and collecting noble metals contained in the solid particles; oxides mainly comprising Ag, Cu and Zn are collected between the laser cleaning chamber 11 and the outlet side filter screen 15 and the primary filter screen 34; mainly BAg30 alloy particles (the melting temperature range of BAg30 is 690-780 ℃) are collected between the second-stage filter screen 35 and the third-stage filter screen 36; the gas generated by the oil stain is discharged after being treated through the chamber gas outlet 310.
Use example 3:
this use case used the wire/strip laser cleaning equipment described above to clean the BAg616 strip. The method specifically comprises the following steps:
1) passing the BAg616 welding strip through a laser cleaning chamber 11, wherein the width of the BAg616 welding strip is 20mm, and the thickness of the BAg616 welding strip is 0.25 mm;
2) adjusting the position of the laser emitting head 22 to enable the laser spot to completely cover the welding strip;
3) setting parameters, wherein the peak laser power is set to be 100W, the pulse width is 50%, the pulse frequency is 50kHz, the working distance is 40mm, the cleaning width is 40mm, and the drawing speed is 1 m/min;
4) starting equipment, in the online cleaning process, introducing noble metal alloy cleaning steam and noble metal oxide cleaning steam into a cooling chamber, cooling the cleaning steam and condensing the cleaning steam into solid particles in the cooling chamber, and collecting noble metals contained in the solid particles; oxides mainly comprising Ag, Cu, Zn and Ni (the melting point of NiO is 1990 ℃) are collected between the laser cleaning chamber 11 and the outlet side filter screen 15 and the first-stage filter screen 34; mainly BAg616 alloy particles (the melting temperature range of BAg616 is 600-695 ℃) are collected between the first-stage filter screen 34 and the second-stage filter screen 35; gas generated by oil stain is treated and discharged through a chamber gas outlet 310;
5) and (5) repeating the steps 1 to 4, and cleaning the other side surface of the welding strip.
The embodiment of the precious metal recovery module of the welding wire/welding strip laser cleaning equipment comprises the following steps: the embodiment of the precious metal recovery module of the welding wire/welding strip laser cleaning device, that is, the precious metal recovery module described in any embodiment of the welding wire/welding strip laser cleaning device, is not specifically described here.
The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.
Claims (10)
1. The precious metal recovery module of the welding wire/welding strip laser cleaning equipment is characterized in that the precious 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 discharge port of a corresponding laser cleaning chamber (11) and allowing cleaning steam to enter the cooling chamber for cooling and condensing into solid particles, and the chamber air outlet (310) is used for discharging residual gas; the precious metal recovery module (31) further comprises a gas flow generating device (41) for forming a gas flow from the laser cleaning chamber (11) to the cooling chamber in a suction and/or blowing manner.
2. The precious metal recovery module of wire/ribbon laser cleaning equipment of claim 1 wherein the cooling chamber comprises two or more compartments (32) arranged in series, each compartment (32) for creating a different temperature gradient.
3. The precious metal recovery module of wire/ribbon laser cleaning equipment of claim 2, wherein at least one of the compartments (32) on the side near the chamber inlet (39) is provided with a heating device; and/or cooling devices are arranged on at least one compartment (32) in the compartments (32) close to the side of the air outlet (310) of the chamber.
4. The precious metal recovery module of wire/ribbon laser cleaning equipment as claimed in claim 2, wherein a compartment screen for preventing particles generated in the respective compartment (32) from entering the next stage compartment (32) is provided on the air flow path between adjacent compartments (32).
5. The precious metal recovery module of the wire/ribbon laser cleaning apparatus of claim 2, 3 or 4 wherein the compartments (32) are arranged in a stack with compartment inlets of adjacent compartments (32) being staggered with respect to each other.
6. The precious metal recovery module of the wire/strip laser cleaning apparatus of claim 1, 2, 3 or 4 wherein the gas flow generating device (41) is a negative pressure device connected to the chamber outlet (310) of the cooling chamber.
7. 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 penetration port and a welding flux penetration port for the welding wire/welding strip to penetrate through, a laser incidence window for laser generated by the laser (23) to penetrate into so as to clean the welding wire/welding strip, and a cleaning steam outlet for discharging cleaning steam generated in the process of laser cleaning of the welding flux; the wire/strip laser cleaning apparatus further comprises a precious metal recovery module (31) according to any one of claims 1 to 6.
8. The welding wire/welding strip laser cleaning apparatus as claimed in claim 7, characterized in that the bottom of the laser cleaning chamber (11) is provided with a discharge opening (13) for discharging solid deposits inside the laser cleaning chamber (11).
9. The wire/ribbon laser cleaning apparatus as claimed in claim 7, characterized in that the laser entrance window is formed by a lens (12) on the laser cleaning chamber (11).
10. The wire/weld strip laser cleaning device according to claim 7, characterized in that the cleaning vapor outlet of the laser cleaning chamber (11) is provided with an outlet-side screen (15).
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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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN114904846A true CN114904846A (en) | 2022-08-16 |
| CN114904846B CN114904846B (en) | 2023-08-25 |
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| CN114904846B (en) | 2023-08-25 |
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