CN114164392B - Synchronous zinc spraying system for multiple pipes - Google Patents
Synchronous zinc spraying system for multiple pipes Download PDFInfo
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- CN114164392B CN114164392B CN202111496347.6A CN202111496347A CN114164392B CN 114164392 B CN114164392 B CN 114164392B CN 202111496347 A CN202111496347 A CN 202111496347A CN 114164392 B CN114164392 B CN 114164392B
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- spray gun
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- dust removing
- workpiece
- spray
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- 238000005507 spraying Methods 0.000 title claims abstract description 97
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 15
- 239000011701 zinc Substances 0.000 title claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 13
- 239000007921 spray Substances 0.000 claims abstract description 114
- 239000000428 dust Substances 0.000 claims abstract description 48
- 238000004062 sedimentation Methods 0.000 claims abstract description 40
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 230000005484 gravity Effects 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 229910002804 graphite Inorganic materials 0.000 claims description 18
- 239000010439 graphite Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 9
- 238000010891 electric arc Methods 0.000 description 4
- 239000003973 paint Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/131—Wire arc spraying
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/08—Metallic material containing only metal elements
Abstract
The invention relates to a multi-pipe synchronous zinc spraying system which comprises a spraying device, a dust removing device, a workpiece conveying device and a frame, wherein the dust removing device is a gravity sedimentation device with a sedimentation space inside, a feed inlet, a discharge outlet, an air inlet and an air outlet which are communicated with the sedimentation space are arranged on the dust removing device, the dust removing device and the spraying device are arranged on the frame, the workpiece conveying device is arranged on the feed side and the discharge side of the dust removing device and is positioned outside the dust removing device, the spraying device comprises a spray gun, a feeding mechanism, a power supply device and a gas supply device, the feed inlet of the spray gun is communicated with the discharge outlet of the feeding mechanism, a spray gun body of the spray gun is arranged on the frame, a spray nozzle of the spray gun stretches into the sedimentation space, the discharge direction of the spray nozzle is angled with the conveying direction of the workpiece conveying device and is positioned in the same plane, the spray gun is powered by the power supply device, the power supply voltage is 25-30v, the gas supply device is a high-low-pressure gas supply device, the high-pressure gas supply is 4-6bar, and the low-pressure gas supply is 2-4bar.
Description
Technical Field
The invention relates to the technical field of electric arc spraying equipment, in particular to a multi-pipe synchronous zinc spraying system.
Background
With the development of society and the continuous development of industrialization, the electric arc spraying technology is applied more and more widely, namely, the electric arc spraying technology is to make electrified corrosion-resistant metal wires generate electric arc combustion through a special power supply, and high-temperature liquid drops of molten metal are sprayed and atomized by compressed air and sprayed on the surface of a metal member to be protected in a very short time, so that a spray coating with high purity and strong binding force is formed by combining a mechanical method with a metallurgical method. The method is suitable for the aspects of long-acting corrosion prevention, wear resistance, equipment repair, old piece renovation, product surface strengthening and the like in manufacturing industry, maintenance industry and related industries, and has great economic benefit and quite wide application prospect. In the process of zinc spraying on the aluminum flat tube, the existing spraying equipment cannot well realize the full utilization of spraying raw materials while ensuring the spraying quality.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a multi-pipe synchronous zinc spraying system which comprises a spraying device, a dust removing device, a workpiece conveying device and a frame, wherein the dust removing device is a gravity sedimentation device with a sedimentation space inside, a feed inlet, a discharge outlet and an air inlet and an air outlet which are communicated with the sedimentation space are arranged, the dust removing device and the spraying device are arranged on the frame, the workpiece conveying device is arranged on the feed side and the discharge side of the dust removing device and is positioned outside the dust removing device, the spraying device comprises a spray gun, a feeding mechanism, a power supply device and an air supply device, the feed inlet of the spray gun is communicated with the discharge outlet of the feeding mechanism, a spray gun body is arranged on the frame, a spray nozzle of the spray gun extends into the sedimentation space, the discharge direction of the spray gun is in an angle with the conveying direction of the workpiece conveying device and is positioned in the same plane, the spray gun is arranged towards the feed direction of the workpiece conveying device, the power supply device supplies power to the spray gun, the power supply voltage is 25-30v, the air supply device supplies high-low-pressure air to the spray gun, the high-pressure air supply is 4-6bar, the low-pressure air supply is 2-4bar, the air inlet and the air outlet and the air inlet and the air outlet are arranged in parallel to the two sides of the sedimentation space, and the air inlet and the air outlet are arranged in parallel.
Further, dust collector includes spray booth and dust removal pipeline, the spray booth is installed in the frame, and has the shell structure of subsidence space for inside, and has feed inlet and the discharge gate that supplies the work piece to pass through on the spray booth lateral wall, and the spray booth top is equipped with the air intake, and the bottom is equipped with the air outlet, dust removal pipeline respectively with air intake and air outlet sealing connection, with the inside subsidence space of spray booth with outside gas intercommunication, subsidence space cross section area is the convergent to top air intake and bottom air outlet respectively by feed inlet and discharge gate position, and the taper angle is A and B respectively, and A is less than B, and the top surface and the bottom surface parallel of subsidence space.
Further, one end of the sedimentation space communicated with the air inlet is of an eccentric quadrangular frustum pyramid flaring structure inwards, the upper bottom deviates from the lower bottom along the vertical material conveying direction, the deviation M1 is 2/9-1/3 of the length of the lower bottom, the ratio N1 of the length of the upper bottom to the length of the lower bottom is 2/9-4/9, the included angle A between the two side surfaces of the material conveying direction and the vertical direction is 20-40 degrees, one side of the sedimentation space communicated with the air outlet is of an eccentric quadrangular frustum pyramid necking structure from the inside of the sedimentation space to the air outlet, the lower bottom deviates from the upper bottom reversely from the air inlet, the deviation M2 is 2/9-1/3 of the length of the upper bottom, the ratio N2 of the length of the lower bottom to the length of the upper bottom is 2/9-4/9, the included angle B between the two side surfaces of the material conveying direction and the vertical direction is 40-60 degrees, the upper bottom and the lower bottom surface of the air inlet side are vertically opposite, and a material conveying area is arranged in an area between the air outlet and the air inlet.
Further, the vector included angle between the discharging direction of the spray gun and the conveying direction of the workpiece is 120-135 degrees, and the distance between the spray gun nozzle and the surface of the workpiece to be sprayed in the discharging direction of the spray gun is 150-250mm.
Further, spraying device still includes guide rail and slider, guide rail fixed mounting is in the frame, and the nozzle ejection of compact direction and the work piece direction of delivery of extending direction perpendicular to spray gun, the slider is connected with the spray gun, and slidable mounting is on the guide rail, and is provided with the lock bolt on the slider, can carry out relative position fixed with slider and guide rail through the lock bolt.
Further, the spraying device further comprises a ball screw mechanism, the ball screw mechanism comprises a nut and a screw rod, the nut is fixedly connected with the sliding block, the screw rod is in threaded connection with the nut, the screw rod is rotationally connected with the spray gun through a thrust bearing, and the spray gun can be driven to move relative to the sliding block along the discharging direction of the spray nozzle.
Further, the spraying device is provided with 2 groups and symmetrically arranged relative to the workpiece to be sprayed.
Further, the number of the spray guns and the sliding blocks is n.
Further, work piece conveyor includes extruder and guider, extruder and dust collector are adjacent to be set up and be located the feed side, guider quantity is 2, and one of them sets up between extruder and dust collector, and another setting is in the ejection of compact side, and guider includes graphite sheet and graphite roller, the graphite sheet sets up in work piece conveying line below, and contacts with the work piece bottom, graphite roller pair sets up, is located work piece conveying line both sides respectively, and the vertically setting is on the graphite sheet top surface, and roll surface and work piece both sides face butt.
The working method for the multi-pipe synchronous zinc spraying system comprises the following steps of:
step one: adjusting parameters, namely setting spraying parameters of a spraying system according to the state of a workpiece and the spraying requirement, wherein the parameters comprise the feeding speed of a feeding mechanism, the output voltage of a power supply device, the air supply pressure of an air supply device, the spraying speed of a spraying device and the angle of a spray gun;
step two: starting equipment, starting a dust removing device, starting feeding after the dust removing device runs normally, and starting a spraying device when the discharging speed of the extruder reaches 30 m/min;
step three: the spraying monitoring is carried out, and the spraying speed of a spraying device is adjusted according to the discharging speed of the extruder;
step four: stopping spraying, and stopping the spraying device when the discharging speed of the extruder is reduced to below 25 m/min.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that: by setting the included angle between the discharging direction of the spray gun and the conveying direction of the workpiece and the distance between the spray gun nozzle and the workpiece to be sprayed, the spraying effect and quality are ensured, and the utilization rate of the spraying raw materials is improved; through setting up dust collector, can guarantee the dust removal effect, improve spraying quality, cooperation spray gun angle can obtain better spraying effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic view of a part of the structure of a spraying device according to the present invention;
FIG. 4 is a schematic view of the guide device of the present invention;
FIG. 5 is a schematic view of the dust collector of the present invention;
fig. 6 is a schematic side view of the dust removing device of the present invention.
Legend: 1. a spraying device; 11. a spray gun; 12. a guide rail; 13. a slide block; 131. a locking bolt; 14. a ball screw mechanism; 141. a nut; 142. a screw rod; 15. a feeding mechanism; 2. a dust removal device; 21. a spray booth; 211. an air inlet; 212. an air outlet; 22. a dust removal pipeline; 23. a settling space; 24. a feed inlet; 25. a discharge port; 3. a workpiece conveying device; 31. an extruder; 32. a guide device; 321. a graphite plate; 322. a graphite roller; 4. a frame.
Detailed Description
For a better understanding of the objects, structures and functions of the present invention, the present invention will be described in further detail with reference to the drawings.
As shown in fig. 1 and 2, a multi-pipe synchronous zinc spraying system comprises a spraying device 1, a dust removing device 2, a workpiece conveying device 3 and a frame 4, wherein the dust removing device 2 is a gravity sedimentation device with a sedimentation space 23 inside, a feed inlet 24, a discharge outlet 25 and an air inlet 211 and an air outlet 212 which are communicated with the sedimentation space 23 are arranged, the dust removing device 2 and the spraying device 1 are arranged on the frame 4, the workpiece conveying device 3 is arranged on the feed side and the discharge side of the dust removing device 2 and is positioned outside the dust removing device 2, the spraying device 1 comprises a spray gun 11, a feeding mechanism 15, a power supply device and a gas supply device, the feed inlet of the spray gun 11 is communicated with the discharge outlet of the feeding mechanism 15, a spray gun 11 gun body is arranged on the frame 4, a nozzle of the spray gun 11 extends into the sedimentation space 23, the discharge direction of the nozzle is angled with the conveying direction of the workpiece conveying device 3 and is positioned in the same plane, the feed direction of the workpiece conveying device 3 is arranged, the power supply device supplies power to the spray gun 11, the power supply voltage is 25-30v, the gas supply device is a high-low-pressure gas supply device, the high-pressure gas supply device is 4-6bar, the low-pressure gas supply voltage is 2-bar and the air supply voltage is arranged at the air inlet and the air outlet 211 is staggered at two sides and the opposite to the air inlet and the air outlet position is arranged at two sides of the air inlet and the air outlet is staggered. Define power supply voltage and air feed pressure, can guarantee that the coating performance of spraying is good, the mode of cooperation exit dislocation set has improved the sedimentation effect, has further promoted the spraying quality, and specifically, spray gun 11 can be the model: 528 spray gun; the power supply device is a power supply source of the S250 model; the air supply device may be an FQ13 model air supply device.
The dust collector 2 includes spray booth 21 and dust removal pipeline 22, spray booth 21 installs on frame 4, and for the inside shell structure that has subsidence space 23, and there are feed inlet 24 and discharge gate 25 that supply the work piece to pass through on the spray booth 21 lateral wall, and spray booth 21 top is equipped with air intake 211, the bottom is equipped with air outlet 212, dust removal pipeline 22 respectively with air intake 211 and air outlet 212 sealing connection, with spray booth 21 inside subsidence space 23 and outside gas intercommunication, subsidence space 23 cross sectional area is by feed inlet and discharge gate position to top air intake 211 and bottom air outlet 212 convergent respectively, the taper angle is A and B respectively, A is less than B, and subsidence space 23's top surface and bottom surface are parallel. Through setting up the convergent structure, further improved the sedimentation effect to with A more than or equal to B, A is less than B sedimentation effect better, through limiting the sedimentation effect that top surface and bottom surface parallel further optimize, compare nonparallel, the dust removal effect increases approximately 10%.
As shown in fig. 5 and 6, one end of the sedimentation space 23, which is communicated with the air inlet 211, is in an eccentric quadrangular frustum-shaped flaring structure, the upper bottom is deviated from the lower bottom along the vertical material conveying direction, the deviation M1 is 2/9-1/35/16 of the length L2 of the lower bottom, the ratio N1 of the length L1 of the upper bottom to the length L2 of the lower bottom is 2/9-4/9, the included angle A between two side surfaces of the material conveying direction and the vertical direction is 20-40 degrees, one side of the sedimentation space 23, which is communicated with the air outlet 212, is in an eccentric quadrangular frustum-shaped necking structure from the inside of the sedimentation space 23 to the air outlet 212, the lower bottom is deviated from the upper bottom reversely to the air inlet 211, the deviation M2 is 2/9-1/3 of the length L4 of the upper bottom, the included angle B between the two side surfaces of the lower bottom and the length L4 of the lower bottom is 2/9-4/9, the included angle B between the two side surfaces of the material conveying direction and the vertical direction is 40-60 degrees, the upper bottom and the lower bottom surface of the air inlet 211 side is vertically opposite to the air inlet side, and a conveying area is arranged between the air outlet 212 and the air inlet 211. By limiting the above dimensions, the sedimentation effect can be further improved and the performance of the coating can be greatly affected by matching the inlet and outlet settings and the range values of the supply voltage and the supply pressure.
The vector included angle between the discharging direction of the spray gun 11 and the workpiece conveying direction is 120-135 degrees, and the distance between the spray gun 11 nozzle and the surface of the workpiece to be sprayed in the discharging direction of the spray gun is 150-250mm. The spray gun 11 sprays the surface of the workpiece in the process of forward conveying of the workpiece, the vector included angle between the discharge direction of the spray gun 11 and the conveying direction of the workpiece is 120-135 degrees, the spray effect and quality of the spray can be guaranteed by spraying at the angle, the bonding strength of the paint and the workpiece can be reduced due to overlarge angle, the spray quality is reduced, the bonding strength of the paint and the workpiece can be increased due to overlarge angle, but the paint is too thick, the spray effect is influenced, raw materials are wasted, the bonding strength of the paint and the workpiece can be reduced due to overlarge distance between the spray gun 11 and the surface of the workpiece to be sprayed in the discharge direction of the spray gun, the area of the spray nozzle sprayed on the workpiece is too small due to overlarge distance, the spray effect and the quality of the workpiece can be guaranteed, the spray can not be leaked, the spray efficiency is high, and the sedimentation effect is greatly influenced due to the fact that the included angle is found through experimental research, which is not found in the prior research.
As shown in fig. 1 and 3, the spraying device 1 further includes a guide rail 12 and a sliding block 13, the guide rail 12 is fixedly installed on the frame 4, the extending direction is perpendicular to the plane where the discharging direction of the spray nozzle of the spray gun 11 and the conveying direction of the workpiece are located, the sliding block 13 is connected with the spray gun 11 and is slidably installed on the guide rail 12, a locking bolt 131 is arranged on the sliding block 13, the sliding block 13 and the guide rail 12 can be fixed in relative position through the locking bolt 131, when the position of the workpiece to be sprayed changes, the position of the sliding block 13 can be moved by loosening the locking bolt 131, so that the spraying position of the spray gun 11 can be changed, and after the spraying position is adjusted to a proper position, the spraying position of the spray gun 11 can be fixed by screwing the locking bolt 131 to be abutted against the guide rail 12; more preferably, the number of the spray guns 11 and the sliding blocks 13 is n, when the width of a workpiece to be sprayed is wider or special spraying requirements or a plurality of workpieces exist, the spraying can be simultaneously carried out through the combination of the n spray guns 11, and the spraying gap of the spray guns 11 can be adjusted or the installation number of the spray guns 11 can be changed by adjusting the positions of the sliding blocks 13 so as to meet different spraying requirements; in particular, the spray gun is also suitable for setting the spray gun 11 and the slide block 13 in one-to-one correspondence with the workpieces to be sprayed when the number of the workpieces to be sprayed is n and the workpieces to be sprayed are arranged in parallel on the same plane, so that a plurality of workpieces can be sprayed at the same time, and the spraying efficiency is improved. The number n is 6 as shown in fig. 3, but the number is not limited to this, and the number is adjusted according to the size of the device and the working condition.
The spraying device 1 further comprises a ball screw mechanism 14, the ball screw mechanism 14 comprises a nut 141 and a screw rod 142, the nut 141 is fixedly connected with the sliding block 13, the screw rod 142 is in threaded connection with the nut 141, the spray gun 11 can be driven to move relative to the sliding block 13 along the discharging direction of the spray nozzle through a thrust bearing, and the distance between the spray nozzle 11 and a workpiece to be sprayed can be adjusted according to working condition requirements by arranging the ball screw mechanism 14 so as to meet different spraying requirements.
Preferably, the spraying device 1 is provided with 2 groups, and is symmetrically arranged about the workpiece to be sprayed, so that the upper surface and the lower surface of the workpiece can be sprayed simultaneously, the spraying efficiency is greatly improved, and the time required for spraying is saved.
As shown in fig. 1 and 4, the workpiece conveying device 3 includes an extruder 31 and a guiding device 32, the extruder 31 is adjacent to the dust removing device 2 and is located at the feeding side, the extruder 31 extrudes raw materials to form wide flat pipe workpieces, the workpieces are continuously conveyed forwards through extrusion force, the number of the guiding devices 32 is 2, one of the guiding devices is arranged between the extruder 31 and the dust removing device 2, the other guiding device is arranged at the discharging side, the guiding device 32 includes a graphite plate 321 and a graphite roller 322, the graphite plate 321 is arranged below a workpiece conveying line and is contacted with the bottom end of the workpiece, and is used for bearing the weight of the workpiece, bending deformation of the workpiece after the extrusion length of the workpiece is avoided, the graphite rollers 322 are arranged in pairs and are respectively located at two sides of the workpiece conveying line and are vertically arranged on the top surface of the graphite plate 321, the roller surface is abutted with two sides of the workpiece, the graphite roller 322 is used for limiting the two sides of the workpiece, the position of the workpiece is prevented from shifting towards two sides in the conveying process, the guiding device 32 has good lubricating performance, the friction suffered in conveying process can be reduced, and the extruder 31 can be of a model of 27.5 MN.
The working method for the multi-pipe synchronous zinc spraying system comprises the following steps:
step one: the parameters are adjusted, and the spraying parameters of the spraying system are set according to the workpiece state and the spraying requirement, including the feeding speed of the feeding mechanism 15, the output voltage of the power supply device, the air supply pressure of the air supply device, the spraying speed of the spraying device 1 and the angle of the spray gun 11.
Step two: and starting the equipment, starting the dust removing device 2, starting feeding after the dust removing device 2 runs normally, and starting the spraying device 1 when the discharging speed of the extruder 31 reaches 30 m/min.
Step three: the spraying is monitored, and the spraying speed of the spraying device 1 is adjusted according to the discharging speed of the extruder 31.
Step four: when the spraying is stopped and the discharge speed of the extruder (31) is reduced to 25m/min or less, the spraying device 1 is stopped.
Example 1
In the embodiment, the power supply voltage V of the power supply device is 25-30V, the high-pressure air supply P1 of the air supply device is 4-6bar, and the low-pressure air supply P2 is 2-4bar; the sedimentation space 23, the deviation M1 of the upper bottom from the lower bottom is 5/16 of the length of the lower bottom, the ratio N1 of the length of the upper bottom to the length of the lower bottom is 1/3, the included angle A between the two sides of the material conveying direction and the vertical direction is 30 degrees, the sedimentation space (23) is communicated with one side of the air outlet (212), the deviation M2 of the lower bottom from the upper bottom is 5/16 of the length of the upper bottom, the ratio N2 of the length of the lower bottom to the length of the upper bottom is 1/3, the included angle B between the two sides of the material conveying direction and the vertical direction is 50 degrees, the material is conveyed in the area between the air inlet and the air outlet, the gas flow velocity in the sedimentation space is 25M/s, the distance between the spray gun 11 nozzle and the surface of a workpiece to be sprayed is 200mm in the spray gun discharging direction, the angle is 135 degrees, and the rest of the embodiment is the same.
The parameters of examples 2-13 and comparative examples 1-7 are shown in Table 1 below, with the remainder being as in example 1.
TABLE 1
| Numbering device | Power supply Pressure V (V) | High pressure supply Air pressure P1 (bar) | Low pressure supply Air pressure P2 (bar) | Deviation amount M1 | Included angle A | N1 | Deviation amount M2 | Included angle B | N2 | Gas flow Quick speed | Spray gun outlet Included angle of material | Spray gun outlet Mouth and article Material surface Distance of | Strong binding Degree- Mpa60- 100mpa | Wire material Utilization/% 40-60% | Covering of Rate/% 95% | Roughness of RA (1 to Lower part | Thickness g- m 2 10Positive direction Negative 2 |
| Examples 1 | 27 | 5 | 3.3 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 25 | 135 | 200 | 95 | 60 | 99 | Ra0.2 | 11± 0.1 |
| Examples 2 | 29 | 6 | 4 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 30 | 135 | 200 | 96 | 54 | 99 | Ra0.22 | 11± 0.3 |
| Examples 3 | 27 | 4.5 | 3.3 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 27 | 120 | 250 | 90 | 60 | 99 | Ra0.2 | 11± 0.15 |
| Examples 4 | 30 | 4 | 2 | 5/16 | 30 | 4/9 | 5/16 | 50 | 4/9 | 23 | 135 | 150 | 97 | 52 | 97 | Ra0.24 | 11± 0.18 |
| Examples 5 | 25 | 5 | 3.3 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 20 | 135 | 200 | 95 | 58 | 99.1 | Ra0.2 | 11± 0.13 |
| Examples 6 | 27 | 5 | 3.3 | 1/3 | 30 | 1/3 | 1/3 | 50 | 1/3 | 28 | 135 | 200 | 94 | 61 | 98.5 | Ra0.25 | 11± 0.22 |
| Examples 7 | 27 | 5 | 3.3 | 5/16 | 20 | 1/3 | 5/16 | 40 | 1/3 | 25 | 135 | 200 | 95.1 | 60.1 | 99 | Ra0.23 | 11± 0.21 |
| Examples 8 | 27 | 5 | 3.3 | 5/16 | 40 | 1/3 | 5/16 | 60 | 1/3 | 25 | 135 | 200 | 94.7 | 59.6 | 99.1 | Ra0.25 | 11± 0.22 |
| Examples 9 | 27 | 5 | 3.3 | 5/16 | 30 | 1/3 | 2/9 | 50 | 1/3 | 25 | 135 | 200 | 95 | 59.2 | 99 | Ra0.25 | 11± 0.31 |
| Examples 10 | 27 | 5 | 3.3 | 5/16 | 30 | 2/9 | 5/16 | 50 | 2/9 | 25 | 135 | 200 | 94.9 | 60 | 99 | Ra0.25 | 11± 0.22 |
| Examples 11 | 27 | 5 | 3.3 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 25 | 120 | 200 | 94 | 59 | 98.6 | Ra0.25 | 11± 0.18 |
| Examples 12 | 27 | 5 | 3.3 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 25 | 140 | 200 | 96 | 59 | 98.6 | Ra0.21 | 11± 0.20 |
| Examples 13 | 27 | 5 | 3.3 | 2/9 | 30 | 1/3 | 5/16 | 50 | 1/3 | 23 | 135 | 150 | 97 | 58 | 99 | Ra0.15 | 11± 0.27 |
| Comparative example 1 | 27 | 7 | 4.5 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 25 | 135 | 200 | 96 | 36 | 95.1 | Ra0.16 | 11± 0.22 |
| Comparative example 2 | 35 | 5 | 3.3 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 25 | 135 | 200 | 94.6 | 39 | 94.8 | Ra0.13 | 11± 0.16 |
| Comparative example 3 | 27 | 5 | 3.3 | 1/2 | 30 | 1/3 | 1/2 | 50 | 1/3 | 25 | 135 | 200 | 95.1 | 58 | 98.7 | Ra0.3 | 11± 0.31 |
| Comparative example 4 | 27 | 5 | 3.3 | 1/9 | 30 | 1/3 | 1/9 | 50 | 1/3 | 25 | 135 | 200 | 95.6 | 58.5 | 98.3 | Ra0.21 | 11± 0.28 |
| Comparative example 5 | 27 | 5 | 3.3 | 5/16 | 50 | 1/3 | 5/16 | 70 | 1/3 | 25 | 135 | 200 | 94.6 | 59.3 | 99.3 | Ra0.22 | 11± 0.33 |
| Comparative example 6 | 27 | 5 | 3.3 | 5/16 | 10 | 1/9 | 5/16 | 50 | 1/9 | 25 | 135 | 200 | 95.2 | 59.2 | 99.1 | Ra0.28 | 11± 0.35 |
| Comparative example 7 | 27 | 5 | 3.3 | 5/16 | 30 | 1/3 | 5/16 | 50 | 1/3 | 25 | 110 | 200 | 90 | 60.2 | 98.6 | Ra0.25 | 11± 0.30 |
As can be seen from the table, example 1 is the best example, it has better effects on the uniformity of bonding strength, wire utilization rate, coverage rate, roughness and thickness, compared with examples 1 and 2, after the power supply pressure and the air supply pressure are improved, not only the wire utilization rate is reduced, conventionally the pressure roughness is increased, but also the uniformity of roughness and thickness in example 2 is reduced, it is found that the surface coating has uneven particles through detection, the sedimentation particles caused by poor sedimentation effect gather on the surface of the workpiece to be sprayed, the bonding strength of example 3 is reduced greatly, the voltage, the air supply pressure and the uniformity of coverage rate and thickness are reduced more after example 4 is adjusted, examples 6-8 and 10 respectively adjust the deviation amount, included angle and N1 and N2, it can be seen that the above parameters have an influence on the uniformity of roughness and thickness, while examples 9 and 13 have a great influence on the uniformity of roughness and thickness when the deviation amount M1 and M2 are not relatively low, it can be seen that the influence on the uniformity of roughness and thickness is greatly reduced, and the evenness of roughness is not found that the roughness and the uniformity has no influence on the roughness is greatly influenced by both examples 11 and has been found that the effect on the evenness before the spray gun has been implemented, and has no influence on the uniformity; as can be seen from comparative examples 1 to 7, the decrease in the parameter index is relatively large when it is out of the required range, indicating that a good product can be obtained within the required range.
It should be understood that the above-described embodiments of the present invention are provided by way of example only and are not intended to limit the scope of the invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. Not all embodiments are exhaustive. All obvious changes or modifications which come within the spirit of the invention are desired to be protected.
Claims (6)
1. A synchronous zinc spraying system for multiple tubes, characterized in that: the spraying device comprises a spraying device (1), a dust removing device (2), a workpiece conveying device (3) and a frame (4), wherein the dust removing device (2) is a gravity sedimentation device with a sedimentation space (23) inside, a feed port (24), a discharge port (25) and an air inlet (211) and an air outlet (212) which are communicated with the sedimentation space (23) are arranged, the dust removing device (2) and the spraying device (1) are arranged on the frame (4), the workpiece conveying device (3) is arranged on the feed side and the discharge side of the dust removing device (2) and is positioned outside the dust removing device (2), the spraying device (1) comprises a spray gun (11), a feeding mechanism (15), a power supply device and a gas supply device, the feed port of the spray gun (11) is communicated with the discharge port of the feeding mechanism (15), a spray gun body of the spray gun (11) is arranged on the frame (4), a nozzle of the spray gun (11) stretches into the sedimentation space (23), the discharge direction of the spray gun is positioned in the same plane and is at an angle with the conveying direction of the workpiece conveying device (3), the feed direction of the workpiece conveying device (3), the spray gun is arranged in the direction of the feed direction of the spray gun (3), the spray gun is at an angle of between 135 degrees and the spray gun surface of the spray gun (11-feed direction and the spray gun is at an angle of the spray gun (150 mm, and the surface of the spray gun (surface to be at the spray angle of the spray gun (150 mm, the power supply device supplies power to the spray gun (11), the power supply voltage is 25-30v, the power supply device is a high-low pressure power supply device, the high-pressure power supply is 4-6bar, the low-pressure power supply is 2-4bar, the air inlet (211) and the air outlet (212) are parallel in the air inlet and outlet direction and are arranged on two opposite sides of the sedimentation space (23) in a staggered manner, the dust removing device (2) comprises a spraying chamber (21) and a dust removing pipeline (22), the spraying chamber (21) is arranged on the frame (4) and is of a shell structure with a sedimentation space (23) inside, a feed inlet (24) and a discharge outlet (25) for a workpiece to pass through are arranged on the side wall of the spraying chamber (21), an air inlet (211) is arranged at the top of the spraying chamber, an air outlet (212) is arranged at the bottom of the spraying chamber, the dust removing pipeline (22) is respectively in sealing connection with the air inlet (211) and the air outlet (212), the inner sedimentation space (23) is communicated with external air, the cross section area of the sedimentation space (23) is gradually reduced from the position of the feed inlet and the discharge outlet to the bottom (211) respectively, the top surface is gradually reduced from the top to the bottom of the bottom (211) of the air inlet and is in parallel to the bottom surface of the air inlet (211) and is in a parallel with the top surface of the air inlet (211) and the bottom (23) respectively, the deviation M1 is 2/9-1/3 of the length of the lower bottom, the ratio N1 of the length of the upper bottom to the length of the lower bottom is 2/9-4/9, the included angle A between the two sides of the material conveying direction and the vertical direction is 20-40 degrees, one side of the sedimentation space (23) communicated with the air outlet (212) is in an eccentric quadrangular frustum pyramid-shaped shrinkage structure from the inside of the sedimentation space (23) to the air outlet (212), the lower bottom is reversely deviated from the air inlet (211), the deviation M2 is 2/9-1/3 of the length of the upper bottom, the ratio N2 of the length of the lower bottom to the length of the upper bottom is 2/9-4/9, the included angle B between the two sides of the material conveying direction and the vertical direction is 40-60 degrees, the upper bottom and the lower bottom of the air inlet (211) are vertically opposite, the material conveying area is arranged in the area between the air outlet (212) and the air inlet (211), the workpiece conveying device (3) comprises an extruder (31) and a guiding device (32), the extruder (31) and the dust removing device (31) are arranged adjacently to the air inlet (211), the other extruding device is arranged between the other side and the other extruding device (32).
2. The synchronized zinc jet spray system for multiple tubes of claim 1, wherein: the spraying device (1) further comprises a guide rail (12) and a sliding block (13), the guide rail (12) is fixedly arranged on the frame (4), the extending direction is perpendicular to the discharging direction of the spray nozzle of the spray gun (11) and the conveying direction of the workpiece, the sliding block (13) is connected with the spray gun (11), the sliding block is slidably arranged on the guide rail (12), the sliding block (13) is provided with a locking bolt (131), and the sliding block (13) and the guide rail (12) can be fixed in relative position through the locking bolt (131).
3. A synchronous zinc jet spray system for multiple tubes as defined in claim 2, wherein: the spraying device (1) further comprises a ball screw mechanism (14), the ball screw mechanism (14) comprises a nut (141) and a screw rod (142), the nut (141) is fixedly connected with the sliding block (13), the screw rod (142) is in threaded connection with the nut (141) and is rotationally connected with the spray gun (11) through a thrust bearing, and the spray gun (11) can be driven to move relative to the sliding block (13) along the discharging direction of the spray nozzle.
4. A synchronous zinc jet spray system for multiple tubes according to claim 1, wherein: the spraying device (1) is provided with 2 groups and is symmetrically arranged relative to the workpiece to be sprayed.
5. A synchronous zinc jet spray system for multiple tubes according to claim 1, wherein: the guide device (32) comprises a graphite plate (321) and graphite rollers (322), the graphite plate (321) is arranged below the workpiece conveying line and is in contact with the bottom end of the workpiece, the graphite rollers (322) are arranged in pairs and are respectively located on two sides of the workpiece conveying line, the vertical arrangement is arranged on the top surface of the graphite plate (321), and the roller surfaces are in butt joint with two side surfaces of the workpiece.
6. A method of operation for a multi-tube simultaneous zinc jet spray system according to any one of claims 1 to 5, wherein: it comprises the following steps:
step one: adjusting parameters, setting spraying parameters of a spraying system according to the workpiece state and the spraying requirement, wherein the parameters comprise the feeding speed of a feeding mechanism (15), the output voltage of a power supply device, the air supply pressure of an air supply device, the spraying speed of a spraying device (1) and the angle of a spray gun (11);
step two: starting equipment, starting the dust removing device (2), starting feeding after the dust removing device (2) is in normal operation, and starting the spraying device (1) when the discharging speed of the extruder (31) reaches 30 m/min;
step three: the spraying monitoring is carried out, and the spraying speed of the spraying device (1) is adjusted according to the discharging speed of the extruder (31);
step four: stopping spraying, and stopping the spraying device (1) when the discharging speed of the extruder (31) is reduced to below 25 m/min.
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| CN202111496347.6A CN114164392B (en) | 2021-12-08 | 2021-12-08 | Synchronous zinc spraying system for multiple pipes |
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| CN202111496347.6A CN114164392B (en) | 2021-12-08 | 2021-12-08 | Synchronous zinc spraying system for multiple pipes |
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| US5791560A (en) * | 1996-12-09 | 1998-08-11 | Thermion, Inc. | Method and apparatus for spraying metal to form a coating |
| CN206244865U (en) * | 2016-10-28 | 2017-06-13 | 陕西瑞特快速制造工程研究有限公司 | A kind of orientation metal dusting device of electric arc spraying change system |
| CN206334804U (en) * | 2016-12-20 | 2017-07-18 | 一同鸿昊（北京）航空航天科技股份有限公司 | Eight aluminium flat conduit paint finishings |
| CN212039646U (en) * | 2020-02-27 | 2020-12-01 | 浙江固雅环境装备有限公司 | Dust filter |
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2021
- 2021-12-08 CN CN202111496347.6A patent/CN114164392B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5791560A (en) * | 1996-12-09 | 1998-08-11 | Thermion, Inc. | Method and apparatus for spraying metal to form a coating |
| CN206244865U (en) * | 2016-10-28 | 2017-06-13 | 陕西瑞特快速制造工程研究有限公司 | A kind of orientation metal dusting device of electric arc spraying change system |
| CN206334804U (en) * | 2016-12-20 | 2017-07-18 | 一同鸿昊（北京）航空航天科技股份有限公司 | Eight aluminium flat conduit paint finishings |
| CN212039646U (en) * | 2020-02-27 | 2020-12-01 | 浙江固雅环境装备有限公司 | Dust filter |
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