CN113275397A - Copper wire drawing process - Google Patents
Copper wire drawing process Download PDFInfo
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- CN113275397A CN113275397A CN202110340438.4A CN202110340438A CN113275397A CN 113275397 A CN113275397 A CN 113275397A CN 202110340438 A CN202110340438 A CN 202110340438A CN 113275397 A CN113275397 A CN 113275397A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to a copper wire drawing process, which comprises the following steps: s1: pretreating the surface of the copper wire; s2: drawing a copper wire by a drawing machine, and soaking the copper wire in a drawing solution in the whole process to perform drawing treatment; s3: annealing the copper wire subjected to wire drawing by using an annealing furnace, firstly, carrying out low-temperature annealing, controlling the annealing temperature at 270-290 ℃, carrying out heat preservation for 1h, and then carrying out recrystallization annealing, wherein the annealing temperature is controlled at 560-600 ℃; s4: the annealed copper wire is cooled by soapy water, the proportioning concentration of the soapy water is 0.5-1.0%, and meanwhile, the annealing furnace comprises an annealing furnace body with an exhaust pipe and a waste heat recovery assembly communicated with the exhaust pipe and used for filtering solid particles wrapped in high-temperature waste gas exhausted from the exhaust pipe in the annealing furnace body and sending the high-temperature gas back to the annealing furnace again to reduce the waste of hot air resources.
Description
Technical Field
The invention relates to the technical field of copper wire processing, in particular to a copper wire drawing process.
Background
The existing Chinese patent with the authorization publication number of CN109637748A provides a copper wire preparation process, which comprises the following steps: copper line fine drawing, copper wire bundle closes, annealing, cooling, deoiling, stoving, when annealing, the adoption be once only accomplish annealing, temperature rise is very fast, be difficult to eliminate the internal stress of copper line, lead to the copper line fracture line that easily appears, greatly reduced product quality, and produce high temperature flue gas in the annealing stove that is used for carrying out the copper line after the wire drawing is handled at present and produce behind natural gas and the air combustion in the atmosphere directly not utilizing to arrange to the atmosphere, contain a large amount of heats in the annealing stove flue gas, the waste in a large number of heating power resources has been caused, from this it is necessary to make the improvement.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a copper wire drawing process which can effectively eliminate the internal stress of a copper wire and has less resource waste.
The technical scheme of the invention is realized as follows: a copper wire drawing process is characterized by comprising the following steps:
s1: pretreating the surface of the copper wire;
s2: drawing a copper wire by a drawing machine, and soaking the copper wire in a drawing solution in the whole process to perform drawing treatment; s3: annealing the copper wire subjected to wire drawing by using an annealing furnace, firstly, carrying out low-temperature annealing, controlling the annealing temperature at 270-290 ℃, carrying out heat preservation for 1h, and then carrying out recrystallization annealing, wherein the annealing temperature is controlled at 560-600 ℃;
s4: and cooling the annealed copper wire by using soapy water, wherein the proportioning concentration of the soapy water is 0.5-1.0%.
By adopting the technical scheme, in daily use, during annealing, the annealing temperature is kept at 270-290 ℃ and is kept for 1h, so that the internal stress of the copper wire is fully eliminated, and the stress corrosion cracking of the copper wire is reduced; then the temperature is raised to 560 ℃ and 600 ℃, the work hardening is eliminated and the plasticity is recovered, so that the processed copper wire has good crack resistance.
The invention also discloses an annealing furnace, which comprises an annealing furnace body with an exhaust pipe, and is characterized in that: and the waste heat recovery assembly is arranged outside the annealing furnace body and is communicated with the exhaust pipe, and the waste heat recovery assembly is used for filtering impurity particles in high-temperature flue gas exhausted from the annealing furnace body through the exhaust pipe and then returning the high-temperature gas into the annealing furnace body.
Through adopting above-mentioned technical scheme, in daily use, the natural gas in the annealing stove and the high temperature flue gas that the air burning back produced pass through in the blast pipe gets into waste heat recovery subassembly, through waste heat recovery subassembly to the impurity granule of wrapping up in the high temperature flue gas after filtering, send high temperature gas back to the annealing stove, through such mode, avoided the high temperature flue gas directly to discharge the heating power resource waste who causes in the environment.
The invention is further configured to: the waste heat recovery assembly comprises a filter box arranged outside the annealing furnace body, a first transverse clapboard arranged in the middle of an inner cavity of the filter box, a first vertical clapboard arranged in the middle of the upper surface of the first transverse clapboard, and a second vertical clapboard vertically arranged at the bottom of the inner cavity of the filter box and positioned on the left side of the first transverse clapboard, wherein the inner cavity of the filter box is divided into a heat conduction chamber at the lower left corner, a first filter chamber at the lower right corner, a second filter chamber at the upper right corner and a heat receiving chamber at the upper left corner by the first transverse clapboard, the end of the exhaust pipe far away from the annealing furnace body penetrates through the side wall of the filter box and then is communicated with the heat receiving chamber, an air return pipe communicated with the heat conduction chamber is arranged on the side wall of the filter box, air pumps are arranged on the exhaust pipe and the air return pipe, a plurality of heat conduction rods are arranged in the heat conduction chamber and the first filter chamber, and the top ends of the heat conduction rods penetrate through the first transverse clapboard and extend to the top of the inner cavity of the heat receiving chamber, be equipped with the filtrate in the first filter chamber inner chamber, first cross slab bottom right side is equipped with the separator box that extends to in the first filter chamber, be provided with a plurality of crisscross baffles each other on the inner wall that the separator box is relative, the second erects the baffle top and is equipped with first air duct and is used for communicateing heat conduction room and first filter chamber, first cross slab right side is equipped with the second air duct and is used for communicateing separator box inner chamber and second filter chamber, the second erects baffle upper portion and is equipped with third air duct and is used for communicateing second filter chamber and heated chamber, separator box bottom right side is equipped with fourth air duct and is used for communicateing first filter chamber and separator box inner chamber, can dismantle in the second filter chamber and be connected with the filtering component who is arranged in filtering the high temperature flue gas in the second filter chamber through the second air duct entering.
By adopting the technical scheme, in daily use, high-temperature flue gas generated after natural gas and air in an annealing furnace are combusted enters a heat conduction chamber through an exhaust pipe, the high-temperature flue gas passes through the heat conduction chamber and then enters a first filtering chamber through a third vent groove arranged on a second vertical partition plate, the air pressure of the high-temperature flue gas entering the heat conduction chamber through the exhaust pipe is improved through an air pump arranged on the exhaust pipe, the high-temperature flue gas passes through filtering liquid and then enters a separation box through a fourth vent groove, part of impurity particles wrapped in the high-temperature flue gas are filtered and adsorbed under the action of the filtering liquid, the high-temperature flue gas collides with baffle plates arranged on the opposite inner walls of the separation box in a staggered mode after entering the separation box, and in the process, the impurity particles wrapped in the high-temperature flue gas fall to the bottom of the inner cavity of the separation box after being blocked by the baffle plates and finally return, the high-temperature flue gas passing through the separation box enters the second filter chamber through the second vent groove, after being filtered by the filter assembly, the high-temperature flue gas enters the heated chamber through the first vent groove, in the process, a large amount of heat in the high-temperature flue gas is absorbed by the lower parts of the heat conducting rods arranged in the heat conducting chamber and the first filter chamber and is transferred to the upper part of the heat conducting rod positioned in the heated chamber, the gas subjected to multiple filtration by the filter liquid, the baffle and the filter assembly is heated, the high-temperature gas subjected to filtration and reheating returns to the annealing furnace body through the air return pipe, the air pump arranged on the air return pipe can enable the heated chamber and the second filter chamber to form negative pressure, the speed of the high-temperature gas entering the second filter chamber through the shell and the second vent groove is accelerated, and the high-temperature waste gas can be transferred into the heated chamber before entering the filter liquid through the ingenious arrangement of the heat conducting rods, the gas with the reduced temperature after being filtered by the filter liquid and the filter assembly is reheated, which is equivalent to temporarily storing the heat in the high-temperature waste gas, and then returning the heat to the annealing furnace after being filtered.
The invention is further configured to: the filter assembly comprises a second transverse partition plate arranged in the middle of the second filter chamber, a dust filter plate which is vertically provided with an inverted U-shaped longitudinal section above the second transverse partition plate and penetrates through the fifth ventilation groove in the middle of the second transverse partition plate, and the upper surface of the second transverse partition plate is positioned on the left side and the right side of the fifth ventilation groove and is provided with slots, the left side and the right side of the bottom of the dust filter plate are respectively inserted into the corresponding slots, a pressing plate is arranged on the outer wall of the top of the dust filter plate, the top of the filter box is movably provided with an cover plate above the second filter chamber, a plurality of stand columns are arranged at the top of the pressing plate, the top of each stand column is fixedly connected with the bottom of the cover plate, the left side of the cover plate is hinged to the right side of the top of the filter box, and the left side of the cover plate is detachably connected with the outer wall of the top of the filter box through a quick connecting assembly.
By adopting the technical scheme, in daily use, after high-temperature waste gas enters the second filter chamber through the second vent groove, the high-temperature waste gas enters the heated chamber through the fifth vent groove and the dust filter plate and then enters the first through groove, the impurity particles wrapped in the high-temperature waste gas are finally filtered through the arrangement of the dust filter plate, the effective filtering area of the dust filter plate arranged in an inverted U shape is improved, the dust filter plate can deal with the high-temperature waste gas with higher flow speed, the filtering efficiency of the high-temperature waste gas cannot be influenced due to limited effective filtering area, in a working state, the left end of the cover plate is quickly connected with the outer wall of the top of the filter box through the quick connecting assembly, the cover plate is in a non-movable state, the dust filter plate is pressed on the upper surface of the second transverse partition plate and is positioned above the fifth vent groove through the pressing plate arranged below the cover plate through the slot, the two ends of the bottom of the dust filter plate are fixed, the dust filter plate is placed on the upper surface of the second diaphragm plate to slide, when the dust filter plate needs to be taken out for cleaning, operating the quick connecting assembly to separate the left side of the cover plate from the outer wall of the top of the filter box, rotating the cover plate around the hinged part of the right end of the cover plate and the filter box to separate the bottom surface of the pressure plate from the top of the dust filter plate until the part of the top of the filter box above the dust filter plate is completely opened, taking the dust filter plate out of the second filter chamber for cleaning, inserting the two sides of the bottom end of the dust filter plate into corresponding slots after cleaning, rotating the cover plate to seal the opening of the top of the filter box, make the left side and the filter box top of rotating the apron fixed at operation quick coupling assembling, through such mode, make things convenient for the staff to take out the dirt board that strains that has a large amount of foreign particles and wash it, make it keep effectual filter effect to the foreign particles who wraps up in the high temperature flue gas.
The invention is further configured to: the second filter is provided with in the room and is used for carrying out clear clean subassembly to straining dirt board inner wall, clean subassembly includes rotates through the pivot and installs the cleaning roller in straining dirt board, is used for driving pivot pivoted driving motor, sunken setting on the cleaning roller surface and a plurality of collection ash grooves that set up each other at the interval, the same one side equal fixed mounting in each collection ash groove has the scraper blade, the one end and the inner wall butt of straining dirt board in collection ash groove are kept away from to the scraper blade.
Through adopting above-mentioned technical scheme, in daily use, drive the pivot through driving motor, make pivoted pivot drive cleaning roller at second filter chamber internal rotation, dust collecting tank and the scraper blade that sets up in dust collecting tank rotate along with cleaning roller's rotation, through the scraper blade will strain during the dirt board inner wall adnexed impurity particle hangs down the dust collecting tank, along with the continuous rotation of cleaning roller, the dust in the dust collecting tank falls to second filter chamber bottom and keeps away from one side in second ventilation groove, through such a mode, make the dirt board inboard can keep clean for a long time, reduce the staff and carry out clear frequency to the dirt board, reduce staff's intensity of labour.
The invention is further configured to: quick coupling assembling including install on apron upper surface left side and towards keeping away from the fender edge that the apron direction extends, along transversely running through from top to bottom set up in the apron left side and lie in keep off along the first spout of below, control run through set up in keep off along the second spout of bottom, respectively along connecting rod and slide of lateral sliding installation in first spout and second spout, the first inserted bar that the level set up is installed with slide bottom surface fixed connection and its bottom in the connecting rod top, first perpendicular baffle top just lies in third air channel top and runs through the first jack of seting up with first inserted bar looks adaptation about, fixed mounting has the handle on the slide top surface.
By adopting the technical scheme, in daily use, when the cover plate is in a working position, the left side baffle edge of the cover plate is abutted against the outer wall of the top of the filter box along the bottom surface, the left end of the cover plate is prevented from falling into the second filter chamber, one end of the first insertion rod, far away from the connecting rod, is inserted into the first insertion hole, air pressure entering the second filter chamber through the second vent groove can generate pressure on the bottom surface of the sliding plate, the sliding plate is pushed towards the direction far away from the filter box, the sliding plate is pressed in the second sliding groove by the force, one end, inserted into the first insertion hole, of the first insertion rod is fixed, when the cover plate needs to be opened, the driving motor and the air pumps are closed in advance, the air pressure difference between the second filter chamber and the atmosphere is eliminated, the occurrence of an accident is prevented, then the sliding plate is pulled by a handle, the connecting rod and the first insertion rod are driven to move towards the direction far away from the first insertion hole, until one end, far away from the connecting rod, of the first insertion rod, completely moves to the inner wall of the top of the filter box, the handle is pulled to the direction of keeping away from the rose box again, makes the apron rotate around the pin joint of its right-hand member and rose box, opens the apron through such mode.
The invention is further configured to: the handle includes that the level sets up and through installation pole fixed mounting at the slide upper surface violently draw the handle, fixed mounting draw the handle before violently drawing the handle or the rear end and the vertical setting is drawn, all be equipped with the radiation shield cover on the outer wall of violently drawing the handle and drawing the handle vertically.
Through adopting above-mentioned technical scheme, in daily use, through drawing the handle to make things convenient for staff's pulling slide to slide in the second spout erectly, through the setting of violently drawing the handle, make things convenient for staff's pulling apron to rotate around the pin joint of its right side and rose box, and the setting of radiation shield can prevent effectively that staff's hand from being scalded by the high temperature that transmits in the handle from the rose box.
The invention is further configured to: the sliding plate is characterized in that a second inserting rod is arranged on the right side of the sliding plate in a mode of transversely penetrating through a third sliding groove from top to bottom and is provided with a second sliding groove along transverse sliding, a threaded hole is formed in the top surface of the cover plate and below the third sliding groove, external threads matched with the threaded hole are formed in the outer wall of the bottom end of the second inserting rod, a sliding block is fixedly arranged at the top end of the second inserting rod, and the bottom surface of the sliding block is in sliding fit with the top surface of the sliding plate.
Through adopting above-mentioned technical scheme, in daily use, when sliding in the second spout through the slide, sliding fit between slider bottom surface and the slide top surface, relative motion is done with the second inserted bar to the third spout, through passing through screw thread and screw hole threaded connection with the second inserted bar, make the position of slider obtain fixing, fix the right-hand member of slide through the slider, avoid because of the second filter chamber internal gas pressure is too big, make slide right-hand member perk, lead to the high-temperature gas in the second filter chamber to leak the phenomenon that leads to hot-blast wasting of resources in the atmosphere and take place.
The invention is further configured to: and a plurality of baffle plates which are arranged in a staggered manner are arranged on the inner walls of the top and the bottom of the heat conduction chamber and the heat receiving chamber.
Through adopting above-mentioned technical scheme, in daily use, through keeping off the setting of class board, improved the time that high temperature waste gas passes through in heated chamber and the heat conduction room, make the heat conduction stick can have enough time with the heat transfer in the waste gas of higher temperature to the waste gas of lower temperature.
The invention is further configured to: the heat conducting rod comprises a hollow pipe body with a heat conducting medium accommodating cavity, and heat conducting liquid is arranged in the heat conducting medium accommodating cavity.
Through adopting above-mentioned technical scheme, in daily use, the heat conduction liquid that is arranged in heat conduction medium and holds chamber bottom is heated the back bulk density and reduces, it holds the chamber top to rise to heat conduction medium, transmit the heat to the high-temperature gas that gets into and be heated the indoor through hollow body, and the just density increase of heat conduction liquid after the temperature reduction, fall heat conduction medium and hold the chamber bottom, heat through the high-temperature air of heat conduction room of flowing through, through such a mode, the efficiency of the temperature transmission between being heated the room and heat conduction room in the high-temperature waste gas has further been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of a part a of fig. 1.
The labels in the figures are:
1-exhaust pipe, 2-annealing furnace body, 3-waste heat recovery assembly, 301-filter box, 302-first transverse clapboard, 303-first vertical clapboard, 304-second vertical clapboard, 305-heat conduction chamber, 306-first filter chamber, 307-second filter chamber, 308-heat receiving chamber, 309-air return pipe, 310-air pump, 311-heat conduction rod, 312-separation box, 313-baffle, 314-first air groove, 315-second air groove, 316-third air groove, 317-fourth air groove, 4-filter assembly, 401-second transverse clapboard, 402-fifth air groove, 403-dust filter plate, 404-slot, 5-press plate, 6-cover plate, 7-upright post, 8-quick connection assembly, 801-blocking edge, 802-a first chute, 803-a second chute, 804-a connecting rod, 805-a sliding plate, 806-a first inserted rod, 807-a first jack, 9-a cleaning component, 901-a rotating shaft, 902-a cleaning roller, 903-a driving motor, 904-an ash collecting groove, 905-a scraping plate, 10-a handle, 1001-a transverse pull handle, 1002-a vertical pull handle, 1003-a heat insulation sleeve, 1004-a mounting rod, 11-a third chute, 12-a second inserted rod, 13-a sliding block, 14-a flow baffle, 15-a heat conducting medium containing cavity and 16-a hollow pipe body.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention discloses a copper wire drawing process, which comprises the following steps:
s1: pretreating the surface of the copper wire;
s2: drawing a copper wire by a drawing machine, and soaking the copper wire in a drawing solution in the whole process to perform drawing treatment; s3: annealing the copper wire subjected to wire drawing by using an annealing furnace, firstly, carrying out low-temperature annealing, controlling the annealing temperature at 270-290 ℃, carrying out heat preservation for 1h, and then carrying out recrystallization annealing, wherein the annealing temperature is controlled at 560-600 ℃;
s4: and cooling the annealed copper wire by using soapy water, wherein the proportioning concentration of the soapy water is 0.5-1.0%.
By adopting the technical scheme, in daily use, during annealing, the annealing temperature is kept at 270-290 ℃ and is kept for 1h, so that the internal stress of the copper wire is fully eliminated, and the stress corrosion cracking of the copper wire is reduced; then the temperature is raised to 560 ℃ and 600 ℃, the work hardening is eliminated and the plasticity is recovered, so that the processed copper wire has good crack resistance.
The invention also discloses an annealing furnace, which comprises an annealing furnace body 2 with an exhaust pipe 1, wherein in the specific embodiment of the invention: and a waste heat recovery assembly 3 communicated with the exhaust pipe 1 is arranged outside the annealing furnace body 2, and the waste heat recovery assembly 3 is used for filtering impurity particles in high-temperature flue gas exhausted from the exhaust pipe 1 in the annealing furnace body 2 and then returning the high-temperature gas into the annealing furnace body 2.
Through adopting above-mentioned technical scheme, in daily use, the high temperature flue gas that produces behind the natural gas in the annealing stove and the air burning passes through blast pipe 1 and gets into waste heat recovery subassembly 3 in, filters the back through waste heat recovery subassembly 3 to the impurity granule that wraps up in the high temperature flue gas, sends high temperature gas back to annealing furnace body 2 in, through such mode, has avoided the high temperature flue gas to directly discharge the heating power resource waste who causes in the environment.
In a specific embodiment of the invention: the waste heat recovery assembly 3 comprises a filter box 301 arranged outside the annealing furnace body 2, a first transverse clapboard 302 arranged in the middle of the inner cavity of the filter box 301, a first vertical clapboard 303 arranged in the middle of the upper surface of the first transverse clapboard 302, and a second vertical clapboard 304 vertically arranged at the bottom of the inner cavity of the filter box 301 and positioned at the left side of the first transverse clapboard 302, the inner cavity of the filter box 301 is divided into a heat conduction chamber 305 at the lower left corner, a first filter chamber 306 at the lower right corner, a second filter chamber 307 at the upper right corner, and a heat receiving chamber 308 at the upper left corner by the first transverse clapboard 302, the first vertical clapboard 303 and the second vertical clapboard 304, one end of the exhaust pipe 1 far away from the annealing furnace body 2 penetrates through the side wall of the filter box 301 and then is communicated with the heat receiving chamber 308, an air return pipe 309 communicated with the heat conduction chamber 305 is arranged on the side wall of the filter box 301, air pumps 310 are arranged on the exhaust pipe 1 and the air return pipe 309, and a plurality of heat conduction rods 311 are arranged in the heat conduction chamber 305 and the first filter chamber 306, the top end of each heat conducting rod 311 extends to the top of the inner cavity of the heat receiving chamber 308 through the first diaphragm 302, filtrate is arranged in the inner cavity of the first filtering chamber 306, the right side of the bottom of the first diaphragm 302 is provided with a separating box 312 extending to the first filtering chamber 306, a plurality of baffles 313 which are staggered with each other are arranged on the opposite inner walls of the separating box 312, the top of the second vertical diaphragm 304 is provided with a first vent groove 314 for communicating the heat conducting chamber 305 with the first filtering chamber 306, the right side of the first diaphragm 302 is provided with a second vent groove 315 for communicating the inner cavity of the separating box 312 with the second filtering chamber 307, the upper part of the second vertical diaphragm 304 is provided with a third vent groove 316 for communicating the second filtering chamber 307 with the heat receiving chamber 308, the right side of the bottom of the separating box 312 is provided with a fourth vent groove 317 for communicating the inner cavity of the first filtering chamber 306 with the inner cavity of the separating box 312, and the second filtering chamber 307 is detachably connected with a filter for filtering impurities in the high-temperature flue gas entering the second filtering chamber 307 through the second vent groove 315 A filter assembly 4 of pellets.
By adopting the technical scheme, in daily use, high-temperature flue gas generated after combustion of natural gas and air in the annealing furnace body 2 enters the heat conduction chamber 305 through the exhaust pipe 1, passes through the heat conduction chamber 305 and then enters the first filtering chamber 306 through the third air passing groove 316 arranged on the second vertical partition plate 304, the air pressure of the high-temperature flue gas entering the heat conduction chamber 305 through the exhaust pipe 1 is improved through the air pump 310 arranged on the exhaust pipe 1, so that the high-temperature flue gas enters the separation box 312 through the filtering liquid and then enters the separation box 317 through the fourth air passing groove 317, under the action of the filtering liquid, part of impurity particles wrapped in the high-temperature flue gas are filtered and adsorbed, the high-temperature flue gas collides with the baffle 313 arranged on the opposite inner wall of the separation box 312 in a staggered manner after entering the separation box 312, and in the process, the impurity particles wrapped in the high-temperature flue gas fall to the bottom of the inner cavity of the separation box 312 after being blocked by the baffle 313, finally, the high-temperature flue gas returns to the first filtering chamber 306 through the fourth ventilation groove 317, the high-temperature flue gas passing through the separation box 312 enters the second filtering chamber 307 through the second ventilation groove 315, after being filtered by the filtering component 4, the high-temperature flue gas enters the heated chamber 308 through the first ventilation groove 314, in the process, a large amount of heat in the high-temperature flue gas is absorbed by the lower parts of the heat conducting chamber 305 and the heat conducting rod 311 arranged in the first filtering chamber 306 and is transferred to the upper part of the heat conducting rod 311 arranged in the heated chamber 308, the gas after being subjected to multiple filtering by the filtering liquid, the baffle 313 and the filtering component 4 is heated, the filtered and reheated high-temperature gas returns to the annealing furnace body 2 through the air return pipe 309, the air pump 310 arranged on the air return pipe 309 can form negative pressure in the heated chamber 308 and the second filtering chamber 307, and the speed of the high-temperature gas entering the second filtering chamber 307 through the shell and the second ventilation groove 315 is accelerated, by skillfully arranging the heat conducting rod 311, a large amount of heat in the high-temperature waste gas can be transferred into the heating chamber 308 before entering the filtering liquid, the gas with the temperature reduced after being filtered by the filtering liquid and the filtering component 4 is reheated, namely, the heat in the high-temperature waste gas is temporarily stored, and then the heat is returned when the gas needs to return to the annealing furnace body 2 after being filtered.
In a specific embodiment of the invention: the filtering assembly 4 comprises a second diaphragm 401 arranged in the middle of a second filtering chamber 307, a fifth ventilating groove 402 vertically penetrating and arranged in the middle of the second diaphragm 401, and a dust filtering plate 403 arranged above the second diaphragm 401 and having an inverted U-shaped longitudinal section, the upper surface of the second diaphragm 401 and the left and right sides of the fifth ventilating slot 402 are both provided with slots 404, the left side and the right side of the bottom of the dust filtering plate 403 are respectively inserted into the corresponding slots 404, the outer wall of the top of the dust filtering plate 403 is provided with a pressing plate 5, the top of the filter tank 301 and above the second filter chamber 307 is movably provided with a cover plate 6, the top of the pressure plate 5 is provided with a plurality of upright posts 7, the top end of each upright post 7 is fixedly connected with the bottom of the cover plate 6, the left side of apron 6 is articulated with rose box 301 top right side, the left side of apron 6 can be dismantled with rose box 301 top outer wall through quick connect assembly 8 and be connected.
By adopting the above technical scheme, in daily use, after high-temperature exhaust gas enters the second filter chamber 307 through the second vent groove 315, after passing through the fifth vent groove 402 and the dust filter plate 403, the high-temperature exhaust gas enters the heated chamber 308 through the first through groove, the impurity particles wrapped in the high-temperature exhaust gas are finally filtered through the arrangement of the dust filter plate 403, the effective filtering area of the dust filter plate 403 arranged in an inverted U shape is increased, so that the dust filter plate 403 can deal with the high-temperature exhaust gas with a high flow speed, the filtering efficiency of the high-temperature exhaust gas cannot be influenced due to the limited effective filtering area, in a working state, the left end of the cover plate 6 is quickly connected with the outer wall of the top of the filter box 301 through the quick connecting assembly 8, so that the cover plate 6 is in an immovable state, the dust filter plate 403 is pressed on the upper surface of the second transverse partition plate 401 and is positioned above the fifth vent groove 402 by the pressing plate 5 installed below the cover plate 6 through the upright post 7, through the arrangement of the slots 404, the two ends of the bottom of the dust filter 403 are fixed, the dust filter 403 is placed on the upper surface of the second diaphragm plate 401 to slide, when the dust filter 403 needs to be taken out and cleaned, the quick connection assembly 8 is operated to separate the left side of the cover plate 6 from the outer wall of the top of the filter box 301, then the cover plate 6 is rotated around the hinged position of the right end of the cover plate and the filter box 301, the bottom surface of the pressing plate 5 is separated from the top of the dust filter 403 until the part of the top of the filter box 301, which is positioned above the dust filter 403, is completely opened, the dust filter 403 can be taken out from the second filter chamber 307 for cleaning, after cleaning, the two sides of the bottom end of the dust filter are inserted into the corresponding slots 404, the cover plate 6 is rotated to close the opening of the top of the filter box 301, and the left side of the rotating cover plate 6 is fixed with the top of the filter box 301 by operating the quick connection assembly 8, and therefore, workers can take out the dust filter 403 with a large amount of impurity particles out and clean the dust filter plate 403, so that the filter can keep the effective filtering effect on the impurity particles wrapped in the high-temperature flue gas.
In a specific embodiment of the invention: a cleaning assembly 9 for cleaning the inner wall of the dust filter plate 403 is arranged in the second filter chamber 307, the cleaning assembly 9 includes a cleaning roller 902 rotatably mounted in the dust filter plate 403 through a rotating shaft 901, a driving motor 903 for driving the rotating shaft 901 to rotate, and a plurality of dust collecting grooves 904 concavely arranged on the surface of the cleaning roller 902 and spaced from each other, a scraper 905 is fixedly mounted on the same side of each dust collecting groove 904, and one end of the scraper 905, which is far away from the dust collecting groove 904, abuts against the inner wall of the dust filter plate 403.
By adopting the technical scheme, in daily use, the rotating shaft 901 is driven by the driving motor 903, the rotating shaft 901 drives the cleaning roller 902 to rotate in the second filtering chamber 307, the dust collecting groove 904 and the scraping plate 905 arranged in the dust collecting groove 904 rotate along with the rotation of the cleaning roller 902, impurity particles attached to the inner wall of the dust filtering plate 403 are hung in the dust collecting groove 904 through the scraping plate 905, dust in the dust collecting groove 904 falls on one side, far away from the second ventilation groove 315, of the bottom of the inner cavity of the second filtering chamber 307 along with the continuous rotation of the cleaning roller 902, and by the mode, the inner side of the dust filtering plate 403 can be kept clean for a long time, the frequency of cleaning the dust filtering plate by workers is reduced, and the labor intensity of the workers is reduced.
In a specific embodiment of the invention: quick coupling assembling 8 runs through along 801, along transversely running through from top to bottom and set up in the apron 6 left side and lie in keeping off along the first spout 802 of 801 below, running through about and set up in keeping off along the second spout 803 of 801 bottom, respectively along connecting rod 804 and slide 805 of lateral sliding installation in first spout 802 and second spout 803 including installing in apron 6 upper surface left side and keeping away from the fender that 6 direction of apron extends, connecting rod 804 top and slide 805 bottom fixed connection and its bottom install the first inserted bar 806 of horizontal setting, first perpendicular baffle 303 top just lies in third air passage 316 top and runs through about and sets up the first jack that has the looks adaptation with first inserted bar 806, fixed mounting has handle 10 on the slide 805 top surface.
By adopting the technical scheme, in daily use, when the cover plate 6 is in a working position, the bottom surface of the left side blocking edge 801 is installed to abut against the outer wall of the top of the filter box 301, so that the left end of the cover plate 6 is prevented from falling into the second filter chamber 307, one end of the first insertion rod 806, which is far away from the connecting rod 804, is inserted into the first insertion hole 807, air pressure entering the second filter chamber 307 through the second ventilation groove 315 can cause pressure on the bottom surface of the sliding plate 805, the sliding plate 805 is pushed in a direction far away from the filter box 301, the sliding plate 805 is pressed in the second sliding groove 803 by the force, one end, which is inserted into the first insertion hole 807, of the first insertion rod 806 is fixed, when the cover plate 6 needs to be opened, the driving motor 903 and each air pump 310 are closed in advance, the air pressure difference between the second filter chamber 307 and the atmosphere is eliminated, and accidents are prevented from happening, then the sliding plate 805 is pulled by the handle 10 to drive the connecting rod 804 and the first insertion rod 806 to move in a direction far away from the first insertion hole 807, when the end of the first inserting rod 806 far from the connecting rod 804 is completely moved far from the inner wall of the top of the filter box 301, the handle 10 is pulled in the direction far from the filter box 301, so that the cover plate 6 rotates around the hinge point between the right end of the cover plate and the filter box 301, and the cover plate 6 is opened in this way.
In a specific embodiment of the invention: the handle 10 comprises a horizontal pull handle 1001 which is horizontally arranged and fixedly arranged on the upper surface of the sliding plate 805 through a mounting rod 1004, and a vertical pull handle 1002 which is fixedly arranged at the front end or the rear end of the horizontal pull handle 1001 and vertically arranged, wherein heat insulation sleeves 1003 are respectively arranged on the outer walls of the horizontal pull handle 1001 and the vertical pull handle 1002.
Through adopting above-mentioned technical scheme, in daily use, make things convenient for staff's pulling slide 805 to slide in second spout 803 through erecting pull handle 1002, through the setting of violently pulling handle 1001, make things convenient for staff's pulling apron 6 to rotate around its right side and rose box 301's pin joint, and the setting of radiation shield 1003 can prevent effectively that staff's hand from being scalded to the high temperature in the handle 10 from transmitting in the rose box 301.
In a specific embodiment of the invention: the right side of the sliding plate 805 is provided with a third sliding groove 11 which is penetrated through from top to bottom along the transverse direction, a second inserted bar 12 is installed along the transverse sliding direction, the top surface of the cover plate 6 is provided with a threaded hole below the third sliding groove 11, the outer wall of the bottom end of the second inserted bar 12 is provided with an external thread matched with the threaded hole, the top end of the second inserted bar 12 is fixedly provided with a sliding block 13, and the bottom surface of the sliding block 13 is in sliding fit with the top surface of the sliding plate 805.
By adopting the above technical scheme, in daily use, when the sliding plate 805 slides in the second sliding groove 803, the bottom surface of the sliding block 13 is in sliding fit with the top surface of the sliding plate 805, the third sliding groove 11 and the second insertion rod 12 move relatively, the second insertion rod 12 is in threaded connection with the threaded hole through threads, so that the position of the sliding block 13 is fixed, the right end of the sliding plate 805 is fixed through the sliding block 13, and the phenomenon that hot air resource waste is caused by the fact that high-temperature gas in the second filtering chamber 307 leaks into the atmosphere due to overlarge air pressure in the second filtering chamber 307 and the tilting of the right end of the sliding plate 805 is avoided.
In a specific embodiment of the invention: the top inner wall and the bottom inner wall of the heat conducting chamber 305 and the heat receiving chamber 308 are respectively provided with a plurality of baffle plates 14 which are arranged in a staggered mode.
By adopting the above technical scheme, in daily use, through the arrangement of the flow baffle plate 14, the time for high-temperature exhaust gas to pass through the heating chamber 308 and the heat conducting chamber 305 is increased, so that the heat conducting rod 311 can have enough time to transfer heat in the exhaust gas with higher temperature to the exhaust gas with lower temperature.
In a specific embodiment of the invention: the heat conducting rod 311 includes a hollow pipe 16 having a heat conducting medium accommodating cavity 15, and heat conducting liquid is disposed in the heat conducting medium accommodating cavity 15.
Through adopting above-mentioned technical scheme, in daily use, the heat conduction liquid that is arranged in heat-conducting medium appearance chamber 15 bottom is heated the back bulk density and reduces, it holds 15 tops to rise to heat-conducting medium, transmit the heat to the high-temperature gas that gets into in the heated chamber 308 through hollow body 16, and the heat conduction liquid density increase after the temperature reduction, fall to heat-conducting medium and hold chamber 15 bottom, heat through the high-temperature air of heat conduction chamber 305 of flowing through, through such a mode, the efficiency of the temperature transmission between heated chamber 308 and heat conduction chamber 305 in the high-temperature waste gas has further been improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A copper wire drawing process is characterized by comprising the following steps:
s1: pretreating the surface of the copper wire;
s2: drawing a copper wire by a drawing machine, and soaking the copper wire in a drawing solution in the whole process to perform drawing treatment;
s3: annealing the copper wire subjected to wire drawing by using an annealing furnace, firstly, carrying out low-temperature annealing, controlling the annealing temperature at 270-290 ℃, carrying out heat preservation for 1h, and then carrying out recrystallization annealing, wherein the annealing temperature is controlled at 560-600 ℃;
s4: and cooling the annealed copper wire by using soapy water, wherein the proportioning concentration of the soapy water is 0.5-1.0%.
2. An annealing furnace suitable for the copper wire drawing process according to claim 1, characterized in that: the annealing furnace comprises an annealing furnace body (2) with an exhaust pipe (1), and is characterized in that: the annealing furnace body (2) is externally provided with a waste heat recovery assembly (3) communicated with the exhaust pipe (1), and the waste heat recovery assembly (3) is used for filtering impurity particles in high-temperature flue gas exhausted from the exhaust pipe (1) in the annealing furnace body (2) and then returning the high-temperature gas into the annealing furnace body (2).
3. An annealing furnace according to claim 2, characterized in that: the waste heat recovery assembly (3) comprises a filter box (301) arranged outside the annealing furnace body (2), a first transverse clapboard (302) arranged in the middle of an inner cavity of the filter box (301), a first vertical clapboard (303) arranged in the middle of the upper surface of the first transverse clapboard (302), and a second vertical clapboard (304) vertically arranged at the bottom of the inner cavity of the filter box (301) and positioned on the left side of the first transverse clapboard (302), wherein the inner cavity of the filter box (301) is divided into a heat conduction chamber (305) at the lower left corner, a first filter chamber (306) at the lower right corner, a second filter chamber (307) at the upper right corner and a heat receiving chamber (308) at the upper left corner by the first transverse clapboard (302), the first vertical clapboard (303) and the second vertical clapboard (304), one end of the exhaust pipe (1) far away from the annealing furnace body (2) penetrates through the side wall of the filter box (301) and then is communicated with the heat receiving chamber (308), and an air return pipe (309) communicated with the heat conduction chamber (305) is arranged on the side wall of the filter box (301), air pumps (310) are respectively installed on the exhaust pipe (1) and the air return pipe (309), a plurality of heat conducting rods (311) are respectively arranged in the heat conducting chamber (305) and the first filtering chamber (306), the top end of each heat conducting rod (311) penetrates through the first transverse partition plate (302) and extends to the top of the inner cavity of the heated chamber (308), filtering liquid is arranged in the inner cavity of the first filtering chamber (306), a separating box (312) extending into the first filtering chamber (306) is arranged on the right side of the bottom of the first transverse partition plate (302), a plurality of mutually staggered baffles (313) are arranged on the opposite inner wall of the separating box (312), a first vent groove (314) is arranged at the top of the second vertical partition plate (304) and is used for communicating the heat conducting chamber (305) with the first filtering chamber (306), a second vent groove (315) is arranged on the right side of the first transverse partition plate (302) and is used for communicating the inner cavity of the separating box (312) with the second filtering chamber (307), the upper portion of the second vertical partition plate (304) is provided with a third ventilation groove (316) for communicating a second filtering chamber (307) and a heated chamber (308), the right side of the bottom of the separation box (312) is provided with a fourth ventilation groove (317) for communicating the first filtering chamber (306) and the inner cavity of the separation box (312), and the second filtering chamber (307) is detachably connected with a filtering component (4) for filtering foreign particles entering the high-temperature flue gas in the second filtering chamber (307) through the second ventilation groove (315).
4. An annealing furnace according to claim 3, characterized in that: the filter assembly (4) comprises a second transverse partition plate (401) arranged in the middle of a second filter chamber (307), a fifth ventilating groove (402) formed in the middle of the second transverse partition plate (401) in a vertically penetrating mode, and a dust filtering plate (403) arranged above the second transverse partition plate (401) and having an inverted U-shaped longitudinal section, wherein slots (404) are formed in the left side and the right side of the fifth ventilating groove (402) on the upper surface of the second transverse partition plate (401), the left side and the right side of the bottom of the dust filtering plate (403) are respectively inserted into the corresponding slots (404), a pressing plate (5) is arranged on the outer wall of the top of the dust filtering plate (403), a cover plate (6) is movably arranged above the second filter chamber (307) at the top of the filter box (301), a plurality of stand columns (7) are arranged at the top of the pressing plate (5), and the top ends of the stand columns (7) are fixedly connected with the bottom of the cover plate (6), the left side of apron (6) is articulated with rose box (301) top right side, the right side of apron (6) can be dismantled with rose box (301) top outer wall through quick connect assembly (8) and be connected.
5. An annealing furnace according to claim 4, characterized in that: be equipped with in second filter chamber (307) and be used for carrying out clear clean subassembly (9) to dirt board (403) inner wall, clean subassembly (9) include rotate through pivot (901) install clean roller (902) in dirt board (403), be used for drive pivot (901) pivoted driving motor (903), sunken setting at clean roller (902) surface and a plurality of collection dirt grooves (904) that set up at interval each other, equal fixed mounting in the same side of each collection dirt groove (904) has scraper blade (905), one end and dirt board (403) inner wall butt that collection dirt groove (904) were kept away from in scraper blade (905).
6. An annealing furnace according to claim 4, characterized in that: the quick connecting component (8) comprises a blocking edge (801) which is arranged on the left side of the upper surface of the cover plate (6) and extends towards the direction far away from the cover plate (6), a first sliding chute (802) which is arranged on the left side of the cover plate (6) in a transverse up-down penetrating mode and is positioned below the blocking edge (801), a second sliding chute (803) which is arranged on the bottom of the blocking edge (801) in a left-right penetrating mode, a connecting rod (804) and a sliding plate (805) which are respectively arranged in the first sliding chute (802) and the second sliding chute (803) in a transverse sliding mode, the top end of the connecting rod (804) is fixedly connected with the bottom surface of the sliding plate (805), and the bottom end of the connecting rod is provided with a first inserted rod (806) which is horizontally arranged, the top of the first vertical partition plate (303) is positioned above the third air passing groove (316) and penetrates left and right to form a first insertion hole (807) matched with the first insertion rod (806), and a handle (10) is fixedly mounted on the top surface of the sliding plate (805).
7. An annealing furnace according to claim 6, characterized in that: the handle (10) comprises a transverse pull handle (1001) which is horizontally arranged and is fixedly arranged on the upper surface of the sliding plate (805) through a mounting rod (1004) and a vertical pull handle (1002) which is fixedly arranged at the front end or the rear end of the transverse pull handle (1001) and is vertically arranged, and heat insulation sleeves (1003) are arranged on the outer walls of the transverse pull handle (1001) and the vertical pull handle (1002).
8. An annealing furnace according to claim 6, characterized in that: slide (805) right side is followed and is transversely run through from top to bottom and seted up in third spout (11) along lateral sliding install second inserted bar (12), apron (6) top surface just is located third spout (11) below and is equipped with the screw hole, be equipped with the external screw thread with screw hole looks adaptation on the second inserted bar (12) bottom outer wall, second inserted bar (12) top fixed mounting has slider (13), slider (13) bottom surface and slide (805) top surface sliding fit.
9. An annealing furnace according to any one of claims 3-8, characterized in that: and a plurality of baffle plates (14) which are arranged in a staggered mode are arranged on the inner walls of the top and the bottom of the heat conduction chamber (305) and the heat receiving chamber (308).
10. An annealing furnace according to claim 9, characterized in that: the heat conducting rod (311) comprises a hollow pipe body (16) with a heat conducting medium accommodating cavity (15), and heat conducting liquid is arranged in the heat conducting medium accommodating cavity (15).
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| US6299775B1 (en) * | 2000-03-17 | 2001-10-09 | Clint R. Elston | Waste and wastewater treatment and recycling system |
| CN201915124U (en) * | 2010-12-20 | 2011-08-03 | 广东顺德浦项钢板有限公司 | Annealing furnace waste heat recovery system |
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