CN112276096A - Cleaning process of metal powder injection molding vacuum degreasing sintering furnace - Google Patents
Cleaning process of metal powder injection molding vacuum degreasing sintering furnace Download PDFInfo
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- CN112276096A CN112276096A CN202011106742.4A CN202011106742A CN112276096A CN 112276096 A CN112276096 A CN 112276096A CN 202011106742 A CN202011106742 A CN 202011106742A CN 112276096 A CN112276096 A CN 112276096A
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- vacuum degreasing
- vacuum
- sintering furnace
- cleaning process
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- 238000005238 degreasing Methods 0.000 title claims abstract description 152
- 238000005245 sintering Methods 0.000 title claims abstract description 73
- 238000004140 cleaning Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 title claims abstract description 23
- 238000001746 injection moulding Methods 0.000 title claims abstract description 20
- 239000000843 powder Substances 0.000 title claims abstract description 20
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000005485 electric heating Methods 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 23
- 238000003860 storage Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000012535 impurity Substances 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000005086 pumping Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 239000007790 solid phase Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000000571 coke Substances 0.000 claims description 4
- 238000005235 decoking Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- 239000012487 rinsing solution Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 8
- 238000005406 washing Methods 0.000 description 7
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/008—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag using fluids or gases, e.g. blowers, suction units
Abstract
The invention discloses a cleaning process of a metal powder injection molding vacuum degreasing sintering furnace, relates to the field of cleaning of vacuum degreasing sintering furnaces, and aims to solve the problem that residual adhesives and oil dirt in the vacuum degreasing sintering furnace in the prior art cannot be quickly cleaned, so that the subsequent working efficiency is influenced. The cleaning process of the metal powder injection molding vacuum degreasing sintering furnace is realized by adopting a vacuum degreasing sintering furnace shell, an electric heater and a vacuum degreasing furnace, wherein the vacuum degreasing furnace is positioned inside the vacuum degreasing sintering furnace shell, a sintering furnace cover is installed on one side of the vacuum degreasing furnace, an electric heating ring is installed on one side of a limiting seat, a telescopic rod is installed on one side of the limiting seat, an electric cylinder is installed at one end of the telescopic rod, a material receiving barrel is installed at the lower end of the electric cylinder, a wear-resistant cushion layer is installed at the lower end of the material receiving barrel, an electromagnetic valve is installed at the lower end inside the vacuum degreasing furnace, and a vacuum pump is installed on the front end face of the vacuum degreasing sintering furnace.
Description
Technical Field
The invention relates to the technical field of cleaning of vacuum degreasing sintering furnaces, in particular to a cleaning process of a metal powder injection molding vacuum degreasing sintering furnace.
Background
A vacuum furnace is a device that heats in a vacuum environment. The high vacuum pump system is connected with a furnace chamber sealed by a metal cover or a quartz glass cover by a pipeline. The vacuum degree of the hearth can reach 133 x (10 < -2 > -10 < -4 >) h. The heating system in the furnace can be directly electrified and heated by resistance furnace wires (such as tungsten wires) or by high-frequency induction heating. The highest temperature can reach about 3000 ℃. The method is mainly used for ceramic sintering, vacuum smelting, degassing of electric vacuum parts, annealing, brazing of metal parts, ceramic-metal sealing and the like. The vacuum sintering furnace is a furnace for performing protective sintering on a heated object in a vacuum environment, and the heating mode is various, such as resistance heating, induction heating, microwave heating and the like.
At present, the main structure in the furnace body of the metal powder injection molding vacuum degreasing sintering furnace is provided with a closed material box besides a heating body and a heat preservation layer, the material box is provided with a safety valve, the interior of the material box is communicated with a degreasing pipeline, and the interior of the furnace body is communicated with an inflation pipeline arranged on the furnace body. In the degreasing process, the heating body is used for heating, the vacuum pump is used for continuously pumping air through the degreasing pipeline, and the gas charging pipeline is continuously charged with protective gas, so that pressure difference is formed between the inside and the outside of the material box, and the gas is promoted to flow in a single direction. As the degreasing temperature rises, the binder is converted to a gaseous state, reaching the part surface by diffusion and penetration through the pores. The uniform air flow can remove most of the adhesive, but a small amount of the adhesive is still left in the parts or some positions in the material box, and the residual adhesive and oil dirt in the parts cannot be quickly cleaned, so that the subsequent working efficiency is influenced; therefore, the market urgently needs to develop a cleaning process of the metal powder injection molding vacuum degreasing sintering furnace to help people solve the existing problems.
Disclosure of Invention
The invention aims to provide a cleaning process for a metal powder injection molding vacuum degreasing sintering furnace, which aims to solve the problem that residual adhesives and oil dirt in the vacuum degreasing sintering furnace cannot be quickly cleaned and the subsequent working efficiency is influenced in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a cleaning process of a metal powder injection molding vacuum degreasing sintering furnace is realized by adopting a vacuum degreasing sintering furnace shell, an electric heater and a vacuum degreasing furnace, the vacuum degreasing furnace is positioned inside a shell of the vacuum degreasing sintering furnace, one side of the vacuum degreasing furnace is provided with a sintering furnace cover, one side of the electric heater is provided with a limiting seat, the outside of the limiting seat is provided with a connecting pipe, one side of the limiting seat is provided with an electric heating ring, one side of the limiting seat is provided with a telescopic rod, one end of the telescopic rod is provided with an electric cylinder, the lower end of the electric cylinder is provided with a material receiving barrel, the lower end of the material receiving barrel is provided with a wear-resistant cushion layer, the lower end of the interior of the vacuum degreasing furnace is provided with an electromagnetic valve, the front end face of the shell of the vacuum degreasing sintering furnace is provided with a vacuum pump, and the interior of the electric heater is provided with a servo motor;
the cleaning process of the metal powder injection molding vacuum degreasing sintering furnace comprises the following steps:
s1: opening a sintering furnace cover, and adjusting the internal pressure of the vacuum degreasing furnace;
s2: after the pressure in the vacuum degreasing furnace is stable, injecting a proper amount of clear water into the vacuum degreasing furnace, clamping the limiting seat and the electric heating ring into the vacuum degreasing furnace, fixing a furnace cover connecting flange outside the electric heater, and sealing the electric heater and the vacuum degreasing furnace;
s3: after sealing is finished, turning on a power supply of the electric heating ring, heating clean water in the furnace for fifteen minutes, turning off the power supply of the electric heating ring after the clean water in the vacuum degreasing furnace is evaporated into steam, washing the steam for thirty minutes, turning on the power supply of the electric heating ring again, heating for fifteen minutes again, and circulating for three times;
s4: electrically adjusting the length of the telescopic rod and the length of the electric cylinder to enable the wear-resistant cushion layer to contact the inner wall of the vacuum degreasing furnace, starting a servo motor to enable the wear-resistant cushion layer to rotate in a fitting manner on the inner wall of the vacuum degreasing furnace, and cleaning oil dirt adhered to the surface;
s5: after the surface oil dirt is scraped, aligning the wear-resistant cushion layer at the upper end of the electromagnetic valve, starting the vacuum pump, opening the electromagnetic valve, pumping out gas in the vacuum degreasing furnace by the vacuum pump, and introducing protective gas through the connecting pipe, wherein the input quantity of the protective gas is less than the output quantity of the vacuum pump;
s6: solid oil dirt in the vacuum degreasing furnace enters the material receiving barrel by the suction force of the vacuum pump and is collected;
s7: after the collection is finished, closing the vacuum pump and the electromagnetic valve, opening the furnace cover connecting flange, taking out the electric heating ring, the connecting pipe, the electric cylinder and the material receiving barrel, and treating the solid-phase residue collected in the material receiving barrel;
s8: adding a decoking descaling agent into the inner wall of the vacuum degreasing furnace for flushing, pumping out internal cleaning liquid after flushing, carrying out nitrogen purging, and closing the sintering furnace cover after completely removing the whole liquid on the inner wall of the vacuum degreasing furnace.
Preferably, the outside both sides of sintering bell are provided with the thread fixing pole, just the inside of sintering bell is provided with the heat preservation and fills up, just threaded hole runs through in the inside of sintering bell, the thread fixing pole passes the threaded hole respectively with sintering bell and bell flange fixed connection.
Preferably, a hinge is installed on one side of the sintering furnace cover, and the sintering furnace cover is movably connected with the vacuum degreasing furnace through the hinge.
Preferably, the fixed block is installed to the one end of telescopic link, the fixed block passes through the fixed screw and is connected with the telescopic link, the upper end of electronic jar is through fixed block and telescopic link fixed connection.
Preferably, the receiving barrel is internally provided with a mounting sleeve, the mounting sleeve and the receiving barrel are arranged into an integral structure, and the electric cylinder is fixedly connected with the receiving barrel through the mounting sleeve.
Preferably, the filter screen is installed to the inside of receipts storage bucket and wear-resisting bed course, the filter screen respectively with receive storage bucket and wear-resisting bed course welded connection, the thickness of wear-resisting bed course is greater than the thickness of filter screen, the outside of receiving the storage bucket is provided with the baffle.
Preferably, in S3, the heat conducting oil in the vacuum degreasing furnace pipeline is emptied, the steam is used to flush the interior of the pipeline to remove the dirt such as surface impurities and rust, when the pressure of the furnace body is reduced to zero and the temperature of the heat conducting oil is reduced to below seventy ℃, the heat conducting liquid in the pot is put into an oil storage tank, the furnace body is reliably isolated from other furnaces and pipelines, and the steam is used again to flush to remove coke dirt and impurities.
Preferably, in S8, the rinsing liquid prepared as described above is combined with the free ions remaining in the vacuum degreasing furnace, and then the neutralizing liquid is reacted with the cleaning liquid remaining in the vacuum degreasing furnace, so that the PH of the entire vacuum degreasing furnace reaches a predetermined level.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, through the arrangement of the electric heater, after the pressure in the vacuum degreasing furnace is stable, a proper amount of clean water is injected into the vacuum degreasing furnace, the limiting seat and the electric heating ring are clamped in the vacuum degreasing furnace, the furnace cover connecting flange outside the electric heater is fixed, the electric heater and the vacuum degreasing furnace are sealed, the power supply of the electric heating ring is started, the clean water in the furnace is evaporated into steam, the surface of the vacuum degreasing furnace can be washed through the steam, after the electric heater and the vacuum degreasing furnace are sealed, the steam can be recycled through cyclic heating, the inner wall of the vacuum degreasing furnace is washed through the steam for multiple times, resources can be saved, and meanwhile, the cleaning efficiency of the vacuum degreasing furnace is improved, so that the subsequent operation is convenient, the structure is simple, and the use is convenient.
2. According to the invention, through the arrangement of the electric cylinder and the telescopic rod, in the steam cleaning process, the telescopic rod and the electric cylinder can be adjusted, so that the wear-resistant cushion layer is contacted with the inner surface of the vacuum degreasing furnace, the telescopic rod is driven to rotate by starting the servo motor, the wear-resistant cushion layer can be scraped on the inner surface of the vacuum degreasing furnace, and the residual adhesive and oil dirt on the inner wall of the vacuum degreasing furnace can fall off, so that the treatment is convenient, the manual operation and cleaning are not needed, the working strength is effectively reduced, the working efficiency is improved, the subsequent work is convenient, the use is convenient, the lengths of the telescopic rod and the electric cylinder can be adjusted according to different types of vacuum degreasing furnaces, the applicability is wide, and.
3. According to the vacuum degreasing furnace, solid-phase impurities can be collected inside the material collecting barrel through the material collecting barrel when the vacuum pump works, the filter screen inside the material collecting barrel effectively prevents the impurities from entering the vacuum pump to cause the whole blockage of the vacuum pump, and the solid phase is conveniently taken out of the vacuum degreasing furnace through the material collecting barrel, so that the working strength is reduced, and the working quality is improved.
Drawings
FIG. 1 is a schematic structural view of a vacuum degreasing sintering furnace shell according to the present invention;
FIG. 2 is a view showing an internal structure of a vacuum degreasing furnace according to the present invention;
FIG. 3 is an overall front view of the receiving bucket of the present invention;
fig. 4 is a schematic structural view of the telescopic rod of the present invention.
In the figure: 1. vacuum degreasing sintering furnace shell; 2. a vacuum pump; 3. a vacuum degreasing furnace; 4. sintering the furnace cover; 5. a threaded fixing rod; 6. the furnace cover is connected with a flange; 7. a threaded hole; 8. a heat-insulating pad; 9. a hinge; 10. an electric heater; 11. a limiting seat; 12. a telescopic rod; 13. a connecting pipe; 14. an electric heating ring; 15. a fixed block; 16. an electric cylinder; 17. a material receiving barrel; 18. a wear-resistant cushion layer; 19. an electromagnetic valve; 20. filtering with a screen; 21. installing a sleeve; 22. a servo motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-4, an embodiment of the present invention is shown: a cleaning process of a metal powder injection molding vacuum degreasing sintering furnace is realized by adopting a vacuum degreasing sintering furnace shell 1, an electric heater 10 and a vacuum degreasing furnace 3, wherein the vacuum degreasing furnace 3 is positioned inside the vacuum degreasing sintering furnace shell 1, a sintering furnace cover 4 is arranged on one side of the vacuum degreasing furnace 3, a limiting seat 11 is arranged on one side of the electric heater 10, a connecting pipe 13 is arranged outside the limiting seat 11, an electric heating ring 14 is arranged on one side of the limiting seat 11, an expansion rod 12 is arranged on one side of the limiting seat 11, an electric cylinder 16 is arranged at one end of the expansion rod 12, a material receiving barrel 17 is arranged at the lower end of the electric cylinder 16, a wear-resistant cushion layer 18 is arranged at the lower end of the material receiving barrel 17, an electromagnetic valve 19 is arranged at the lower end inside the vacuum degreasing furnace 3, and a vacuum pump 2 is arranged on the front end face, a servo motor 22 is installed inside the electric heater 10;
the cleaning process of the metal powder injection molding vacuum degreasing sintering furnace comprises the following steps:
s1: opening a sintering furnace cover 4, and adjusting the internal pressure of the vacuum degreasing furnace 3;
s2: after the pressure in the vacuum degreasing furnace 3 is stable, injecting a proper amount of clear water into the vacuum degreasing furnace, clamping the limiting seat 11 and the electric heating ring 14 into the vacuum degreasing furnace 3, fixing a furnace cover connecting flange 6 outside the electric heater 10, sealing the electric heater 10 and the vacuum degreasing furnace 3, and sealing and fixing the electric heater 10, so that the subsequent operation is facilitated, the structure is simple, and the use is convenient;
s3: after sealing is finished, a power supply of the electric heating ring 14 is started, clean water in the vacuum degreasing furnace 3 is heated for fifteen minutes, the power supply of the electric heating ring 14 is closed after the clean water in the vacuum degreasing furnace 3 is evaporated into steam, the power supply of the electric heating ring 14 is turned on again thirty minutes after steam washing, the clean water is heated for fifteen minutes again and is circulated for three times, the steam can be recycled through circulating heating, the steam washing is carried out on the inner wall of the vacuum degreasing furnace 3 for multiple times, resources can be saved, and meanwhile, the cleaning efficiency of the vacuum degreasing furnace 3 is improved;
s4: electrically adjusting the length of the telescopic rod 12 and the length of the electric cylinder 16 to enable the wear-resistant cushion layer 18 to contact the inner wall of the vacuum degreasing furnace 3, starting the servo motor 22 to enable the wear-resistant cushion layer 18 to be attached and rotated on the inner wall of the vacuum degreasing furnace 3 to clean oil dirt adhered to the surface, and driving the telescopic rod 12 to rotate by starting the servo motor 22, so that the wear-resistant cushion layer 18 can be scraped on the inner surface of the vacuum degreasing furnace 3, the residual adhesive and the oil dirt on the inner wall of the vacuum degreasing furnace 3 can be separated, and the treatment is convenient;
s5: after the surface oil dirt is scraped, aligning the wear-resistant cushion layer 18 at the upper end of the electromagnetic valve 19, starting the vacuum pump 2, opening the electromagnetic valve 19, pumping out gas in the vacuum degreasing furnace 3 by the vacuum pump 2, introducing protective gas through the connecting pipe 13, wherein the input quantity of the protective gas is less than the output quantity of the vacuum pump 2, and pumping out the gas in the vacuum degreasing furnace 3 when the vacuum pump 2 works;
s6: solid oil dirt in the vacuum degreasing furnace 3 enters the material receiving barrel 17 by the suction force of the vacuum pump 2 for collection, and impurities are effectively prevented from entering the vacuum pump 2 through the filter screen 20 in the material receiving barrel 17 to cause the integral blockage of the vacuum pump 2;
s7: after the collection is finished, the vacuum pump 2 and the electromagnetic valve 19 are closed, the furnace cover connecting flange 6 is opened, the electric heating ring 14, the connecting pipe 13, the electric cylinder 16 and the material receiving barrel 17 are taken out, and the solid-phase residue collected in the material receiving barrel 17 is treated;
s8: adding a decoking descaling agent into the inner wall of the vacuum degreasing furnace 3 for flushing, pumping out internal cleaning liquid after flushing, carrying out nitrogen purging, and closing the sintering furnace cover 4 after completely removing the whole liquid on the inner wall of the vacuum degreasing furnace 3.
Further, the outside both sides of sintering bell 4 are provided with threaded fixing rod 5, and the inside of sintering bell 4 is provided with heat preservation pad 8, and the inside of sintering bell 4 runs through threaded hole 7, and threaded fixing rod 5 passes threaded hole 7 respectively with sintering bell 4 and bell flange 6 fixed connection, makes things convenient for sintering bell 4 to carry out the dismouting through threaded fixing rod 5.
Further, a hinge 9 is installed on one side of the sintering furnace cover 4, the sintering furnace cover 4 is movably connected with the vacuum degreasing furnace 3 through the hinge 9, and the vacuum degreasing furnace 3 can be cleaned after the sintering furnace cover 4 is opened.
Further, fixed block 15 is installed to the one end of telescopic link 12, and fixed block 15 is connected with telescopic link 12 through the set screw, and fixed block 15 and telescopic link 12 fixed connection are passed through to electronic jar 16 upper end, can be according to the length of the 3 adjustment telescopic links 12 of vacuum degreasing furnace of different grade type and electronic jar 16, extensive applicability, the simple operation.
Further, the internally mounted of receiving the storage bucket 17 has installation sleeve 21, and installation sleeve 21 sets up structure as an organic whole with receiving storage bucket 17, and electronic jar 16 is through installation sleeve 21 and receiving storage bucket 17 fixed connection, through the convenient fixed electronic jar 16 of installation sleeve 21, also makes things convenient for the split to receive storage bucket 17.
Further, all install filter screen 20 in the inside of receiving storage bucket 17 and wear-resisting bed course 18, filter screen 20 respectively with receive storage bucket 17 and wear-resisting bed course 18 welded connection, wear-resisting bed course 18's thickness is greater than filter screen 20's thickness, the outside of receiving storage bucket 17 is provided with the baffle, and through receiving storage bucket 17 conveniently with the solid phase take out vacuum degreasing furnace 3 inside, reduced working strength, promoted operating mass with.
Further, in S3, the heat conducting oil in the pipeline of the vacuum degreasing furnace 3 is emptied, the steam is used for washing the inside of the pipeline to remove the dirt such as surface impurities, rust and the like, when the pressure of the furnace body is reduced to zero and the temperature of the heat conducting oil is reduced to be below seventy ℃, the heat conducting liquid in the pot is put into an oil storage tank, the furnace body is reliably isolated from other furnaces and pipelines, and the steam is used for washing again to remove coke dirt and impurities.
Further, in S8, the rinsing liquid prepared as described above is combined with the free ions remaining in the vacuum degreasing furnace 3, and the neutralizing liquid is reacted with the cleaning liquid remaining in the vacuum degreasing furnace 3, thereby making the PH value in the entire vacuum degreasing furnace 3 meet the predetermined requirement.
The working principle is as follows: when the vacuum degreasing furnace is used, the sintering furnace cover 4 is opened, the internal pressure of the vacuum degreasing furnace 3 is adjusted, after the pressure in the vacuum degreasing furnace 3 is stabilized, a proper amount of clean water is injected into the furnace, the limiting seat 11 and the electric heating ring 14 are clamped into the vacuum degreasing furnace 3, the furnace cover connecting flange 6 outside the electric heater 10 is fixed, the electric heater 10 and the vacuum degreasing furnace 3 are sealed, after the electric heater 10 is sealed and fixed, the subsequent operation is convenient, the structure is simple, the use is convenient, after the sealing is finished, the power supply of the electric heating ring 14 is started, the clean water in the furnace is heated for fifteen minutes, after the clean water in the vacuum degreasing furnace 3 is evaporated into steam, the power supply of the electric heating ring 14 is closed, thirty minutes after the steam is flushed, the power supply of the electric heating ring 14 is started again, fifteen minutes are heated again, the steam is circulated for three times, the steam can be recycled through the cyclic, emptying heat conducting oil in a pipeline of a vacuum degreasing furnace 3, flushing the inside of the pipeline by steam to remove dirt such as surface impurities and rusty objects, when the pressure of a furnace body is reduced to zero and the temperature of the heat conducting liquid is reduced to below seventy ℃, putting heat conducting liquid in a pot into an oil storage tank, reliably isolating the furnace body from other furnaces and pipelines, flushing again by steam to remove coke scale and impurities, saving resources, improving the cleaning efficiency of the vacuum degreasing furnace 3, electrically adjusting the length of a telescopic rod 12 and the length of an electric cylinder 16 to enable a wear-resistant cushion layer 18 to be in contact with the inner wall of the vacuum degreasing furnace 3, starting a servo motor 22 to enable the wear-resistant cushion layer 18 to be in joint rotation on the inner wall of the vacuum degreasing furnace 3, cleaning oil scale adhered to the surface, driving the telescopic rod 12 to rotate by starting the servo motor 22 to enable the wear-resistant cushion layer 18 to be scraped on the inner surface of the vacuum degreasing furnace 3, and enabling residual adhesive and oil scale on, thereby facilitating the treatment, after the surface oil dirt is scraped, the wear-resistant cushion layer 18 is aligned to the upper end of the electromagnetic valve 19, the vacuum pump 2 is opened, the electromagnetic valve 19 is opened, the vacuum pump 2 pumps out the gas in the vacuum degreasing furnace 3, the protective gas is led in through the connecting pipe 13, the input quantity of the protective gas is smaller than the output quantity of the vacuum pump 2, when the vacuum pump 2 works, the gas in the vacuum degreasing furnace 3 is pumped out, the solid oil dirt in the vacuum degreasing furnace 3 enters the material receiving barrel 17 by the suction force of the vacuum pump 2 for collection, the filter screen 20 in the material receiving barrel 17 effectively prevents the impurities from entering the vacuum pump 2 to cause the whole blockage of the vacuum pump 2, after the collection is completed, the vacuum pump 2 and the electromagnetic valve 19 are closed, the furnace cover connecting flange 6 is opened, the electric heating ring 14, the connecting pipe 13, the electric cylinder 16 and the material receiving barrel 17 are taken out, the, adding a decoking descaling agent into the inner wall of the vacuum degreasing furnace 3 for washing, combining rinsing liquid prepared according to the specification with free ions remained in the vacuum degreasing furnace 3, then reacting neutralizing liquid with cleaning liquid remained in the vacuum degreasing furnace 3 to enable the pH value in the whole vacuum degreasing furnace 3 to reach the specified requirement, after washing, extracting the internal cleaning liquid, carrying out nitrogen purging, and after completely removing the whole liquid on the inner wall of the vacuum degreasing furnace 3, closing the sintering furnace cover 4.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A cleaning process of a metal powder injection molding vacuum degreasing sintering furnace is characterized by comprising the following steps: the cleaning process of the metal powder injection molding vacuum degreasing sintering furnace is realized by adopting a vacuum degreasing sintering furnace shell (1), an electric heater (10) and a vacuum degreasing furnace (3), wherein the vacuum degreasing furnace (3) is positioned inside the vacuum degreasing sintering furnace shell (1), a sintering furnace cover (4) is installed on one side of the vacuum degreasing furnace (3), a limiting seat (11) is installed on one side of the electric heater (10), a connecting pipe (13) is installed outside the limiting seat (11), an electric heating ring (14) is installed on one side of the limiting seat (11), a telescopic rod (12) is installed on one side of the limiting seat (11), an electric cylinder (16) is installed at one end of the telescopic rod (12), a material receiving barrel (17) is installed at the lower end of the electric cylinder (16), a wear-resistant cushion layer (18) is installed at the lower end of the material receiving barrel (17), and an electromagnetic valve (19) is installed at the lower end inside the vacuum degreasing furnace (3, the front end face of the vacuum degreasing sintering furnace shell (1) is provided with a vacuum pump (2), and a servo motor (22) is arranged in the electric heater (10);
the cleaning process of the metal powder injection molding vacuum degreasing sintering furnace comprises the following steps:
s1: opening a sintering furnace cover (4), and adjusting the internal pressure of the vacuum degreasing furnace (3);
s2: after the pressure in the vacuum degreasing furnace (3) is stable, injecting a proper amount of clear water into the vacuum degreasing furnace, clamping the limiting seat (11) and the electric heating ring (14) into the vacuum degreasing furnace (3), fixing a furnace cover connecting flange (6) outside the electric heater (10), and sealing the electric heater (10) and the vacuum degreasing furnace (3);
s3: after sealing is finished, a power supply of the electric heating ring (14) is started, clean water in the furnace is heated for fifteen minutes, after the clean water in the vacuum degreasing furnace (3) is evaporated into steam, the power supply of the electric heating ring (14) is closed, thirty minutes of steam flushing is carried out, the power supply of the electric heating ring (14) is turned on again, fifteen minutes of heating is carried out again, and circulation is carried out for three times;
s4: electrically adjusting the length of the telescopic rod (12) and the length of the electric cylinder (16), enabling the wear-resistant cushion layer (18) to contact the inner wall of the vacuum degreasing furnace (3), starting the servo motor (22), enabling the wear-resistant cushion layer (18) to be attached to and rotate on the inner wall of the vacuum degreasing furnace (3), and cleaning oil dirt adhered to the surface;
s5: after the surface oil dirt is scraped, aligning a wear-resistant cushion layer (18) to the upper end of an electromagnetic valve (19), starting a vacuum pump (2), opening the electromagnetic valve (19), pumping out gas in a vacuum degreasing furnace (3) by the vacuum pump (2), and introducing protective gas through a connecting pipe (13), wherein the input quantity of the protective gas is less than the output quantity of the vacuum pump (2);
s6: solid oil dirt in the vacuum degreasing furnace (3) enters the material collecting barrel (17) by the suction force of the vacuum pump (2) for collection;
s7: after the collection is finished, closing the vacuum pump (2) and the electromagnetic valve (19), opening the furnace cover connecting flange (6), taking out the electric heating ring (14), the connecting pipe (13), the electric cylinder (16) and the material receiving barrel (17), and treating the solid-phase residue collected in the material receiving barrel (17);
s8: adding a decoking descaling agent into the inner wall of the vacuum degreasing furnace (3) for flushing, pumping out internal cleaning liquid after flushing, carrying out nitrogen purging, and closing the sintering furnace cover (4) after completely removing the whole liquid on the inner wall of the vacuum degreasing furnace (3).
2. The cleaning process of the metal powder injection molding vacuum degreasing sintering furnace according to claim 1, wherein the cleaning process comprises the following steps: the external both sides of sintering bell (4) are provided with threaded fixing rod (5), just the inside of sintering bell (4) is provided with heat preservation pad (8), just threaded hole (7) is run through to the inside of sintering bell (4), threaded fixing rod (5) pass threaded hole (7) respectively with sintering bell (4) and bell flange (6) fixed connection.
3. The cleaning process of the metal powder injection molding vacuum degreasing sintering furnace according to claim 1, wherein the cleaning process comprises the following steps: and a hinge (9) is installed on one side of the sintering furnace cover (4), and the sintering furnace cover (4) is movably connected with the vacuum degreasing furnace (3) through the hinge (9).
4. The cleaning process of the metal powder injection molding vacuum degreasing sintering furnace according to claim 1, wherein the cleaning process comprises the following steps: fixed block (15) are installed to the one end of telescopic link (12), fixed block (15) are connected with telescopic link (12) through the set screw, fixed block (15) and telescopic link (12) fixed connection are passed through to the upper end of electronic jar (16).
5. The cleaning process of the metal powder injection molding vacuum degreasing sintering furnace according to claim 1, wherein the cleaning process comprises the following steps: the inside mounting of receipts storage bucket (17) has installation sleeve (21), installation sleeve (21) and receipts storage bucket (17) set up structure as an organic whole, electronic jar (16) are through installation sleeve (21) and receipts storage bucket (17) fixed connection.
6. The cleaning process of the metal powder injection molding vacuum degreasing sintering furnace according to claim 1, wherein the cleaning process comprises the following steps: the filter screen (20) are installed to the inside of receipts storage bucket (17) and wear-resisting bed course (18), filter screen (20) respectively with receipts storage bucket (17) and wear-resisting bed course (18) welded connection, the thickness of wear-resisting bed course (18) is greater than the thickness of filter screen (20), the outside of receiving storage bucket (17) is provided with the baffle.
7. The process of claim 1, wherein in step S3, the heat conducting oil in the vacuum degreasing furnace (3) pipeline is emptied, steam is used to flush the interior of the pipeline to remove impurities and rust on the surface, when the pressure of the furnace body drops to zero and the temperature of the heat conducting oil drops below seventy ℃, the heat conducting liquid in the boiler is put into an oil storage tank, the furnace body is reliably isolated from other furnaces and pipelines, and steam is used again to flush the heat conducting liquid to remove coke and impurities.
8. The process of claim 1, wherein in step S8, the rinsing solution prepared according to the specification is combined with the free ions remained in the vacuum degreasing furnace (3), and then the neutralizing solution is reacted with the cleaning solution remained in the vacuum degreasing furnace (3) to make the PH value in the whole vacuum degreasing furnace (3) reach the specified requirement.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0257617A (en) * | 1988-08-20 | 1990-02-27 | Kawasaki Steel Corp | Vacuum sintering tool |
| CN2328439Y (en) * | 1998-03-25 | 1999-07-14 | 王志江 | Hydrolytic vacuum composite cleaning furnace |
| CN2621838Y (en) * | 2003-05-30 | 2004-06-30 | 朱忠义 | Horizontal vacuum cleaning furnace |
| CN103317138A (en) * | 2013-06-06 | 2013-09-25 | 宁波恒普真空技术有限公司 | Degreasing and cleaning process of metal powder injection molding vacuum degreasing sintering furnace |
| CN203664670U (en) * | 2013-12-11 | 2014-06-25 | 赣州伟嘉合金有限责任公司 | Horizontal type vacuum degreasing and sintering furnace |
| CN203664671U (en) * | 2013-12-11 | 2014-06-25 | 赣州伟嘉合金有限责任公司 | Degreasing and sintering furnace |
| CN206935372U (en) * | 2017-07-14 | 2018-01-30 | 咸阳华电电子材料科技有限公司 | A kind of intelligent resin reaction kettle |
| CN208711559U (en) * | 2018-09-06 | 2019-04-09 | 嘉兴丰桥食品有限公司 | It is a kind of to melt oil cauldron convenient for what is heated and clean |
| CN110041996A (en) * | 2019-05-14 | 2019-07-23 | 河南永乐粮油机械有限公司 | A kind of grease negative pressure tempers system and technique |
| CN211463174U (en) * | 2019-11-27 | 2020-09-11 | 安徽嘉蓝新材料有限公司 | Quantitative feeding device is used in epoxy production |
-
2020
- 2020-10-16 CN CN202011106742.4A patent/CN112276096A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0257617A (en) * | 1988-08-20 | 1990-02-27 | Kawasaki Steel Corp | Vacuum sintering tool |
| CN2328439Y (en) * | 1998-03-25 | 1999-07-14 | 王志江 | Hydrolytic vacuum composite cleaning furnace |
| CN2621838Y (en) * | 2003-05-30 | 2004-06-30 | 朱忠义 | Horizontal vacuum cleaning furnace |
| CN103317138A (en) * | 2013-06-06 | 2013-09-25 | 宁波恒普真空技术有限公司 | Degreasing and cleaning process of metal powder injection molding vacuum degreasing sintering furnace |
| CN203664670U (en) * | 2013-12-11 | 2014-06-25 | 赣州伟嘉合金有限责任公司 | Horizontal type vacuum degreasing and sintering furnace |
| CN203664671U (en) * | 2013-12-11 | 2014-06-25 | 赣州伟嘉合金有限责任公司 | Degreasing and sintering furnace |
| CN206935372U (en) * | 2017-07-14 | 2018-01-30 | 咸阳华电电子材料科技有限公司 | A kind of intelligent resin reaction kettle |
| CN208711559U (en) * | 2018-09-06 | 2019-04-09 | 嘉兴丰桥食品有限公司 | It is a kind of to melt oil cauldron convenient for what is heated and clean |
| CN110041996A (en) * | 2019-05-14 | 2019-07-23 | 河南永乐粮油机械有限公司 | A kind of grease negative pressure tempers system and technique |
| CN211463174U (en) * | 2019-11-27 | 2020-09-11 | 安徽嘉蓝新材料有限公司 | Quantitative feeding device is used in epoxy production |
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