CN113594123A - Bonding alloy silver wire and preparation method thereof - Google Patents
Bonding alloy silver wire and preparation method thereof Download PDFInfo
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- CN113594123A CN113594123A CN202110845091.9A CN202110845091A CN113594123A CN 113594123 A CN113594123 A CN 113594123A CN 202110845091 A CN202110845091 A CN 202110845091A CN 113594123 A CN113594123 A CN 113594123A
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- 239000000956 alloy Substances 0.000 title claims abstract description 83
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 83
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 11
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 29
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000010931 gold Substances 0.000 claims abstract description 20
- 229910052737 gold Inorganic materials 0.000 claims abstract description 20
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 19
- 230000017525 heat dissipation Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 41
- 230000005540 biological transmission Effects 0.000 claims description 38
- 238000004804 winding Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000000137 annealing Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 229910052709 silver Inorganic materials 0.000 claims description 15
- 239000004332 silver Substances 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 14
- 238000009749 continuous casting Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 229910002708 Au–Cu Inorganic materials 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000005491 wire drawing Methods 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000011575 calcium Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/49—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions wire-like arrangements or pins or rods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/005—Continuous casting of metals, i.e. casting in indefinite lengths of wire
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/06—Alloys based on silver
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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
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4885—Wire-like parts or pins
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- Metallurgy (AREA)
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a bonding alloy silver wire and a preparation method thereof, relating to the technical field of bonding wire processing, and comprising 0.1-9.0 wt% of gold sheet with the purity of 99.99 wt%, 2.5.0-7.5.0 wt% of palladium sheet with the purity of 99.97 wt%, 0-0.26 wt% of Au-Be master alloy and 0-2.4 wt% of Au-Ca master alloy according to weight percentage. The invention does not need to be provided with a motor or a cylinder for driving, further does not need to be provided with an additional heat insulation protection mechanism, can avoid the influence of the motor or the cylinder on the normal preparation of the bonding alloy silver wire due to high-temperature damage, and simultaneously fully utilizes hot air flow generated in the heat dissipation process, thereby avoiding the waste of energy.
Description
Technical Field
The invention relates to the technical field of bonding wire processing, in particular to a bonding alloy silver wire and a preparation method thereof.
Background
When a semiconductor device and an integrated circuit are assembled, in order to realize the micro metal wire inner lead electrically connected between an input/output bonding point of a circuit in a chip and an inner contact point of a lead frame, the main types of the bonding wire at present are gold wire, alloy gold wire, copper wire, palladium-plated copper wire and the like, silver has the smallest resistivity and the optimal conductive performance in all metals, and the heat dissipation performance of silver is superior to that of gold.
An invention patent with a patent application publication number of CN 103194637B, which is an issued invention, discloses a bonding alloy silver wire and a preparation method thereof, belonging to the technical field of bonding wire processing. A bonding alloy silver wire comprises the following metal materials in parts by weight: less than 90 wt% of silver, 3.0 wt% -10.0 wt% of gold and 3.0 wt% -8.0 wt% of palladium; also comprises at least two of the following metals: 10-100ppm of calcium, 4-10ppm of beryllium, 10-100ppm of cerium and 50-500ppm of copper. The preparation method comprises the following steps: 1) and preparing the materials. 2) And smelting the master alloy. 3) And continuously casting the alloy rod. 4) Rough drawing, medium drawing and fine drawing. 5) And intermediate annealing. 6) And ultra-fine drawing. 7) And finally annealing. 8) And winding. 9) And (6) packaging. The invention has reasonable and standard process design and simple and convenient operation, and the obtained product has strong conductive capability, certain oxidation resistance, good plasticity, higher breaking load and better elongation, has low price, can meet the requirements of semiconductor packaging industry and LED lighting technology on the performance of the bonding alloy silver wire, and can be used as a substitute of the bonding gold wire.
However, in the above step of "continuously casting alloy rod", it is necessary to "open the small crucible suspended in the furnace and add the gold piece, palladium piece and mother alloy in the small crucible into the large crucible in the furnace", in the prior art, in order to realize the above step, it is necessary to use a motor or a hydraulic cylinder, although the motor or hydraulic cylinder is arranged outside the furnace body, because the temperature in the furnace is at least 1050-.
Meanwhile, in order to avoid the excessive influence of the temperature emitted by the furnace body on the working environment, a person skilled in the art can also arrange a heat dissipation mechanism outside the furnace body, but the hot air flow formed by the heat dissipation mechanism cannot be effectively utilized, so that the energy waste is caused.
Therefore, it is necessary to invent a bonding alloy silver wire and a preparation method thereof to solve the above problems.
Disclosure of Invention
The invention aims to provide a bonding alloy silver wire and a preparation method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a bonding alloy silver wire comprises, by weight, 0.1-9.0 wt% of gold sheet with a purity of 99.99 wt%, 2.5.0-7.5.0 wt% of palladium sheet with a purity of 99.97 wt%, 0-0.26 wt% of Au-Be master alloy, 0-2.4 wt% of Au-Ca master alloy, 0-2.6 wt% of Au-Ce master alloy, 0-12.4 wt% of Au-Cu master alloy, and the balance of silver with a purity of 99.99 wt%.
The invention also provides a preparation method of the bonding alloy silver wire, which is realized by using a continuous casting furnace, the continuous casting furnace comprises a support assembly, a furnace body assembly is fixedly arranged on the left side of the top of the support assembly, an air supply mechanism is fixedly sleeved on the outer side of the furnace body assembly, a conversion mechanism is fixedly connected on the right side of the furnace body assembly, a first transmission mechanism is arranged above the conversion mechanism, a second transmission mechanism is arranged below the conversion mechanism, a branch pipe in the conversion mechanism is used for dividing hot air output by the air supply mechanism so as to blow a fan, a first rotating shaft is further driven to drive a first driven sprocket in the first transmission mechanism and a second driven sprocket in the second transmission mechanism, a lifting feeding mechanism is arranged on the top of the inner cavity of the furnace body in the furnace body assembly, a first reciprocating screw rod in the lifting feeding mechanism is driven by a first conical gear in the first transmission mechanism, drive the whole reciprocal lift of second crucible and closing mechanism, the fixed closing mechanism that is provided with in lift feed mechanism right side bottom, the closing plate among the closing mechanism seals second crucible bottom, the fixed trigger mechanism that is provided with in furnace body cavity middle part right side among the furnace body subassembly, trigger mechanism is located second drive mechanism top, the trigger bar among the trigger mechanism descends when receiving the pressure of the position lantern ring among the closing mechanism, and then collineates on the fifth spring horizontal direction among the second drive mechanism, reciprocating motion about the drive of second reciprocal lead screw of fifth spring among the second drive mechanism, and then promotes the trigger bar.
Preferably, the bracket assembly comprises a base, a medium-frequency induction heating device and an installation cabinet, the medium-frequency induction heating device is fixedly arranged on the right side of the top of the base, and the installation cabinet is arranged on the front side of the base;
the furnace body assembly comprises a furnace body, a first crucible, a flow guide pipe and a stop valve, the furnace body is fixedly arranged on the left side of the top of the base, the first crucible is fixedly arranged in the middle of an inner cavity of the furnace body, the flow guide pipe is fixedly arranged at the bottom of the first crucible in a penetrating mode, and the stop valve is arranged on the flow guide pipe and is fixedly connected with the inner wall of the furnace body;
air feed mechanism includes arc sealed cowling, intake pipe and air-cooler, the fixed cup joint of arc sealed cowling sets up in furnace body rear side top, the intake pipe left end is connected with the arc sealed cowling and the right-hand member is connected with the air-cooler, the air-cooler is fixed to be set up in intermediate frequency induction heating device top right side.
Preferably, the conversion mechanism comprises a second exhaust pipe, a hollow plate, a shunt branch pipe, a square sealing cover, a first rotating shaft, a fan and a driving sprocket, the left end of the second exhaust pipe is connected with the arc sealing cover, the right end of the second exhaust pipe is connected with the hollow plate, the left side of the arc sealing cover is fixedly provided with the first exhaust pipe in a penetrating manner, the first exhaust pipe and the second exhaust pipe are respectively provided with a valve, the shunt branch pipe is provided with a plurality of shunt branch pipes which are uniformly and fixedly arranged on the right side wall of the inner cavity of the hollow plate in a penetrating manner, the square sealing cover is fixedly arranged on the right side of the hollow plate, the first rotating shaft is fixedly arranged at the center of the right side of the square sealing cover in a penetrating manner, the first rotating shaft is rotatably connected with the square sealing cover through a bearing, the left end of the first rotating shaft extends to the inner side of the square sealing cover, the fan is positioned in the square sealing cover, and is fixedly connected with the outer side of the first rotating shaft, two driving chain wheels are arranged, and the two driving chain wheels are fixedly sleeved at the right end of the outer side of the first rotating shaft;
the first transmission mechanism comprises a second rotating shaft, a first fixing plate, a first bevel gear and a first driven sprocket, the second rotating shaft penetrates through the outer wall of the furnace body and extends to the inside of the furnace body, the first fixing plate is sleeved outside the second rotating shaft through a bearing in a rotating mode, the first fixing plate is fixedly connected with the inner wall of the furnace body, the first bevel gear is fixedly arranged at the left end of the second rotating shaft and at the right end of the first driven sprocket, and the first driven sprocket is in transmission connection with any one driving sprocket through a chain.
Preferably, the lifting feeding mechanism comprises a second fixed plate, a first reciprocating screw rod, a second bevel gear, a first sliding block, a first spring, an annular sleeve plate, an L-shaped connecting arm and a second crucible, the second fixed plate is fixedly connected with the inner wall of the furnace body, the first reciprocating screw rod penetrates through the second fixed plate and is rotatably connected with the second fixed plate through a bearing, the second bevel gear is fixedly arranged at the top end of the first reciprocating screw rod and is meshed with the first bevel gear, the first slide block is sleeved and arranged at the outer side of the first reciprocating screw rod and is in threaded connection with the first reciprocating screw rod, the first spring and the annular sleeve plate are sleeved and arranged at the outer side of the first reciprocating screw rod, the top end of the first spring is fixedly connected with the first sliding block, the bottom end of the first spring is fixedly connected with the annular sleeve plate, the L-shaped connecting arm is fixedly arranged on the right side of the bottom of the annular sleeve plate, and the second crucible is fixedly arranged at the bottom end of the L-shaped connecting arm;
the closing mechanism is including installation piece, first slide bar, second spring, third fixed plate, closing plate and the position lantern ring, the installation piece is fixed to be set up in second crucible right side, first slide bar is fixed to be set up in installation piece right side middle part, the second spring all cup joints with the third fixed plate and sets up in the first slide bar outside, second spring left end and installation piece fixed connection and right-hand member and third fixed plate fixed connection, the closing plate is fixed to be set up in third fixed plate bottom, the position lantern ring is fixed to be set up in closing plate bottom right side.
Preferably, trigger mechanism includes fixed sleeve, second slide bar, first connecting plate, third spring, trigger bar, second connecting plate and fourth spring, fixed sleeve and furnace body inner wall fixed connection, the second slide bar slides and sets up in the fixed sleeve inboard, first connecting plate all cup joints with the third spring and sets up in the second slide bar outside, and first connecting plate and second slide bar fixed connection, run through the second slide bar in the vertical direction of trigger bar and with second slide bar sliding connection, the second connecting plate all cup joints with the fourth spring and sets up in the trigger bar outside, and second connecting plate and trigger bar fixed connection, fourth spring top and second connecting plate fixed connection and bottom and second slide bar fixed connection.
Preferably, the second transmission mechanism comprises a fourth fixing plate, a second reciprocating screw rod, a second driven sprocket, a second slider, side plates, an intermediate shaft, a fifth spring and a shifting block, the fourth fixing plate is fixedly arranged at the bottom of the fixing sleeve, the second reciprocating screw rod penetrates through the fourth fixing plate and is rotatably connected with the fourth fixing plate through a bearing, the second driven sprocket is fixedly arranged at the left end of the second reciprocating screw rod, the second driven sprocket is in transmission connection with another driving sprocket through a chain, the second slider is sleeved and arranged at the outer side of the second reciprocating screw rod and is in threaded connection with the second reciprocating screw rod, the two side plates are fixedly arranged at the top of the second slider, the intermediate shaft is positioned between the two side plates, the two ends of the intermediate shaft are rotatably connected with the two side plates through bearings respectively, and the fifth spring and the shifting block are sleeved and arranged at the outer side of the intermediate shaft, and the fifth spring is fixedly connected with the intermediate shaft, one end of the toggle block is fixedly connected with the fifth spring, and the other end of the toggle block is fixedly connected with the adjacent side plate.
Preferably, the continuous casting furnace still includes the stirring subassembly, the stirring subassembly includes rotary disk and puddler, the rotary disk is fixed to be set up in first reciprocal lead screw bottom, the puddler is fixed to be set up in rotary disk bottom left side, the puddler bottom is located first crucible inner chamber bottom.
Preferably, the method specifically comprises the following steps:
s1, preparing materials: according to weight percentage, respectively taking 0.1-9.0 wt% of gold sheet with the purity of 99.99 wt%, 2.5.0-7.5.0 wt% of palladium sheet with the purity of 99.97 wt%, 0-0.26 wt% of Au-Be master alloy, 0-2.4 wt% of Au-Ca master alloy, 0-2.6 wt% of Au-Ce master alloy, 0-12.4 wt% of Au-Cu master alloy and the balance of silver with the purity of 99.99 wt%;
s2, feeding for the first time: placing gold sheets, palladium sheets and mother alloy required to be added into a second crucible, and placing silver with the purity of 99.99 wt% into a first crucible;
s3, vacuum melting: the furnace body is vacuumized, and when the vacuum degree in the furnace body reaches 0.1 multiplied by 10-3Heating the first crucible by using the medium-frequency induction heating device at Pa, completely melting the metal silver when the temperature in the furnace body reaches 1050-;
s4, cooling and heat dissipation: in the furnace body temperature rising process, a cold air blower inputs cold air into the arc-shaped sealing cover through an air inlet pipe, the cold air exchanges heat with the furnace body, the furnace body is cooled, a valve on a first exhaust pipe is in an open state, a valve on a second exhaust pipe is in a closed state, and air flow which is heated after heat exchange is discharged from the first exhaust pipe;
s5, feeding for the second time: the valve on the first exhaust pipe is closed, the valve on the second exhaust pipe is opened at the same time, hot gas flows into the hollow plate through the second exhaust pipe, then the hot gas is shunted by the shunt branch pipes and blows the fan to enable the fan to drive the driving chain wheels to rotate, and the two driving chain wheels respectively drive the first driven chain wheel and the second driven chain wheel to rotate when rotating;
when the first driven chain wheel rotates, the second bevel gear is driven to rotate through the second rotating shaft and the first bevel gear, the second bevel gear drives the first reciprocating screw rod to rotate, the first sliding block drives the second crucible to lift outside the first reciprocating screw rod, and when the positioning lantern ring is sleeved outside the top end of the trigger rod due to the descending of the second crucible, the trigger rod is pressed downwards, so that the bottom end of the trigger rod and the fifth spring are arranged in a collinear manner in the horizontal direction;
when the second driven sprocket rotates, the second reciprocating screw rod drives the second sliding block to move left and right, when the second sliding block drives the fifth spring to move right, the bottom end of the trigger rod is pushed, so that the trigger rod drives the second sliding rod to enter the fixed sleeve, meanwhile, the trigger rod drives the sealing plate to move right through the positioning sleeve ring, at the moment, the discharge hole at the bottom of the second crucible is opened, and the gold sheet, the palladium sheet and the master alloy in the second crucible fall into the first crucible;
with the continuous rotation of the first reciprocating screw rod, the first reciprocating screw rod drives the second crucible to reset through the first sliding block, at the moment, the valve on the first exhaust pipe is opened, the valve on the second exhaust pipe is closed, the interior of the furnace body is maintained at 1050-;
s6, drawing and casting the alloy rod: stopping vacuumizing, and filling argon gas to keep the pressure in the furnace body at 0.01-0.05Pa, simultaneously opening the stop valve, and enabling the molten metal in the first crucible to flow to a wire outlet nozzle at the bottom of the furnace body through a guide pipe to obtain an alloy rod with a smooth surface;
s7, rough drawing, medium drawing and fine drawing: the alloy bar continuously cast by adopting a continuous casting method is subjected to rough drawing, intermediate drawing and fine drawing to be drawn into micron-sized semi-finished filaments;
s8, intermediate annealing: annealing the alloy silver wire obtained by fine drawing at the temperature of 350-450 ℃, wherein the winding tension is 3-15g, and the winding speed is 150-250 rpm;
s9, superfine drawing: drawing the alloy silver wire subjected to intermediate annealing into a finished product size required by a customer, wherein the elongation of a die is 4-9%, and the wire drawing speed is 180-;
s10, final annealing: annealing the alloy silver wire with the finished product size at the temperature of 450-600 ℃, wherein the winding tension is 3-15g, and the winding speed is 100-200 rpm;
s11, winding: the winding tension is 3-30g, and the winding speed is 500-750 rpm.
The invention has the technical effects and advantages that:
the invention is provided with a conversion mechanism, a first transmission mechanism, a lifting feeding mechanism, a closing mechanism, a trigger mechanism and a second transmission mechanism, so that when the material is fed for the second time, hot air generated by an air supply mechanism can be utilized to drive two driving sprockets in the conversion mechanism to rotate, the two driving sprockets respectively drive a first reciprocating screw rod in the lifting feeding mechanism through a second rotating shaft in the first transmission mechanism to lift a second crucible, and drive a fifth spring at the top of a second sliding block to move right through a second reciprocating screw rod in the second transmission mechanism, the second crucible enters the inner side of a positioning lantern ring in the closing mechanism when descending, and simultaneously the positioning lantern ring is pressed to a position which is collinear with the fifth spring in the horizontal direction, so that the fifth spring drives a closing plate to move right through the trigger rod, and gold sheets, palladium sheets and mother alloy which need to be added in the second crucible can fall into liquid silver in the first crucible, compared with the same type of devices in the prior art, the device does not need to be provided with a motor or an air cylinder for driving, further does not need to be provided with an additional heat insulation protection mechanism, can avoid the influence of high-temperature damage on the normal preparation of the bonded alloy silver wire caused by the motor or the air cylinder, fully utilizes hot air flow generated in the heat dissipation process, and avoids energy waste.
Drawings
Fig. 1 is a schematic overall front view structure of the present invention.
Fig. 2 is a front view of the conversion mechanism and the first transmission mechanism of the present invention.
Fig. 3 is a schematic front view of the lifting feeding mechanism and the sealing mechanism of the present invention.
Fig. 4 is a schematic front view of the trigger mechanism and the trigger mechanism of the present invention.
FIG. 5 is a schematic top view of a second slider according to the present invention.
FIG. 6 is a schematic process flow diagram of the present invention.
In the figure: 1. a bracket assembly; 11. a base; 12. a medium frequency induction heating device; 13. installing a cabinet; 2. a furnace body assembly; 21. a furnace body; 22. a first crucible; 23. a flow guide pipe; 24. a stop valve; 3. a wind supply mechanism; 31. an arc-shaped sealing cover; 32. an air inlet pipe; 33. an air cooler; 4. a conversion mechanism; 41. a second exhaust pipe; 42. a hollow slab; 43. a branch pipe; 44. a square sealing cover; 45. a first rotating shaft; 46. a fan; 47. a drive sprocket; 5. a first transmission mechanism; 51. a second rotation shaft; 52. a first fixing plate; 53. a first bevel gear; 54. a first driven sprocket; 6. a lifting feeding mechanism; 61. a second fixing plate; 62. a first reciprocating screw rod; 63. a second bevel gear; 64. a first slider; 65. a first spring; 66. an annular race plate; 67. an L-shaped connecting arm; 68. a second crucible; 7. a sealing mechanism; 71. mounting blocks; 72. a first slide bar; 73. a second spring; 74. a third fixing plate; 75. a closing plate; 76. a positioning collar; 8. a trigger mechanism; 81. fixing the sleeve; 82. a second slide bar; 83. a first connecting plate; 84. a third spring; 85. a trigger lever; 86. a second connecting plate; 87. a fourth spring; 9. a second transmission mechanism; 91. a fourth fixing plate; 92. a second reciprocating screw rod; 93. a second driven sprocket; 94. a second slider; 95. a side plate; 96. an intermediate shaft; 97. a fifth spring; 98. a shifting block; 10. a stirring assembly; 101. rotating the disc; 102. a stirring rod.
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.
Example 1
The invention provides a bonding alloy silver wire, which comprises, by weight, 0.1-9.0 wt% of gold sheet with the purity of 99.99 wt%, 2.5.0-7.5.0 wt% of palladium sheet with the purity of 99.97 wt%, 0-0.26 wt% of Au-Be master alloy, 0-2.4 wt% of Au-Ca master alloy, 0-2.6 wt% of Au-Ce master alloy, 0-12.4 wt% of Au-Cu master alloy, and the balance of silver with the purity of 99.99 wt%.
Example 2
As shown in fig. 1-5, the method is implemented by using a continuous casting furnace, the continuous casting furnace includes a support assembly 1, a furnace body assembly 2 is fixedly disposed on the left side of the top of the support assembly 1, an air supply mechanism 3 is fixedly sleeved on the outer side of the furnace body assembly 2, a conversion mechanism 4 is fixedly connected to the right side of the furnace body assembly 2, a first transmission mechanism 5 is disposed above the conversion mechanism 4, and a second transmission mechanism 9 is disposed below the conversion mechanism 4, a branch pipe 43 in the conversion mechanism 4 branches hot air output from the air supply mechanism 3, so that the hot air blows a fan 46, and further drives a first rotating shaft 45 to drive a first driven sprocket 54 in the first transmission mechanism 5 and a second driven sprocket 93 in the second transmission mechanism 9, a lifting feeding mechanism 6 is disposed on the top of an inner cavity of a furnace body 21 in the furnace body assembly 2, and a first reciprocating screw 62 in the lifting feeding mechanism 6 drives a first bevel gear 53 in the first transmission mechanism 5 Under the drive, drive second crucible 68 and the whole reciprocal lift of closing mechanism 7, the fixed closing mechanism 7 that is provided with in lift feed mechanism 6 right side bottom, closing plate 75 among the closing mechanism 7 seals second crucible 68 bottom, the fixed trigger mechanism 8 that is provided with in furnace body 21 inner chamber middle part right side among the furnace body subassembly 2, trigger mechanism 8 is located second drive mechanism 9 top, the triggering lever 85 among the trigger mechanism 8 descends when receiving the pressure of the locating lantern ring 76 among the closing mechanism 7, and then with the collineation in the second drive mechanism 9 horizontal direction of fifth spring 97, reciprocating motion about the drive of second reciprocating screw 92 of fifth spring 97 among the second drive mechanism 9, and then promote triggering lever 85.
As shown in fig. 1, the support assembly 1 includes a base 11, a medium frequency induction heating device 12 and an installation cabinet 13, the medium frequency induction heating device 12 is fixedly disposed on the right side of the top of the base 11, and the installation cabinet 13 is disposed on the front side of the base 11, so as to heat a first crucible 22 in the furnace body assembly 2 by using a heating pipe extending from the left side of the medium frequency induction heating device 12.
Simultaneously, furnace body subassembly 2 includes furnace body 21, first crucible 22, honeycomb duct 23 and stop valve 24, furnace body 21 is fixed to be set up in 11 top left sides of base, first crucible 22 is fixed to be set up in 21 inner chamber middle parts of furnace body, honeycomb duct 23 is fixed to be run through and to be set up in first crucible 22 bottom, stop valve 24 sets up on honeycomb duct 23, and with 21 inner wall fixed connection of furnace body.
In addition, air feed mechanism 3 includes arc sealed cowling 31, intake pipe 32 and air-cooler 33, arc sealed cowling 31 fixed cup joints and sets up in furnace body 21 rear side top, intake pipe 32 left end is connected and the right-hand member is connected with air-cooler 33 with arc sealed cowling 31, air-cooler 33 is fixed to be set up in 12 top right sides of intermediate frequency induction heating device to in the process of rising the temperature of furnace body 21, make air-cooler 33 pass through intake pipe 32 to the inside input air conditioning of arc sealed cowling 31, air conditioning exchanges heat with furnace body 21, make the furnace body 21 cooling.
As shown in fig. 2, the conversion mechanism 4 includes a second exhaust pipe 41, a hollow plate 42, a branch pipe 43, a square sealing cover 44, a first rotating shaft 45, a fan 46 and a driving sprocket 47, the left end of the second exhaust pipe 41 is connected to the arc sealing cover 31, the right end of the second exhaust pipe is connected to the hollow plate 42, the left side of the arc sealing cover 31 is fixedly provided with the first exhaust pipe in a penetrating manner, the first exhaust pipe and the second exhaust pipe 41 are both provided with valves, the branch pipe 43 is provided with a plurality of branch pipes 43, the branch pipes 43 are uniformly and fixedly arranged on the right side wall of the inner cavity of the hollow plate 42 in a penetrating manner, the square sealing cover 44 is fixedly arranged on the right side of the hollow plate 42, the first rotating shaft 45 is fixedly arranged in the center of the right side of the square sealing cover 44 in a penetrating manner, the first rotating shaft 45 is rotatably connected to the square sealing cover 44 through a bearing, and the left end of the first rotating shaft extends to the inside of the square sealing cover 44, fan 46 is located inside square sealed cowling 44, and fixed cup joint sets up in the first rotation axis 45 outside, drive sprocket 47 is provided with two, two drive sprocket 47 all fixed cup joint sets up in the first rotation axis 45 outside right-hand member to inside back of hollow plate 42 is entered into through second blast pipe 41 to the steam flow, blows fan 46 after a plurality of reposition of redundant personnel branch pipes 43 reposition of redundant personnel and makes fan 46 drive sprocket 47 rotatory, and two drive sprockets 47 drive the second driven sprocket 93 rotation in first driven sprocket 54 and the second drive mechanism 9 in the first drive mechanism 5 respectively when rotatory.
Meanwhile, the first transmission mechanism 5 includes a second rotating shaft 51, a first fixing plate 52, a first bevel gear 53 and a first driven sprocket 54, the second rotating shaft 51 penetrates through the outer wall of the furnace body 21 and extends into the furnace body 21, the first fixing plate 52 is rotatably sleeved outside the second rotating shaft 51 through a bearing, the first fixing plate 52 is fixedly connected with the inner wall of the furnace body 21, the first bevel gear 53 is fixedly arranged at the left end of the second rotating shaft 51 and the first driven sprocket 54 is fixedly arranged at the right end of the first driven sprocket 54, the first driven sprocket 54 is in transmission connection with any one of the driving sprockets 47 through a chain, so that when the driving sprocket 47 drives the first driven sprocket 54 to rotate, the second rotating shaft 51 and the first bevel gear 53 drive a second bevel gear 63 in the lifting feeding mechanism 6 to rotate when the first driven sprocket 54 rotates.
As shown in fig. 3, the lifting feeding mechanism 6 includes a second fixing plate 61, a first reciprocating screw rod 62, a second bevel gear 63, a first slider 64, a first spring 65, an annular sleeve plate 66, an L-shaped connecting arm 67 and a second crucible 68, the second fixing plate 61 is fixedly connected with the inner wall of the furnace body 21, the first reciprocating screw rod 62 penetrates through the second fixing plate 61 and is rotatably connected with the second fixing plate 61 through a bearing, the second bevel gear 63 is fixedly arranged at the top end of the first reciprocating screw rod 62 and is engaged with the first bevel gear 53, the first slider 64 is sleeved on the outer side of the first reciprocating screw rod 62 and is in threaded connection with the first reciprocating screw rod 62, the first spring 65 and the annular sleeve plate 66 are both sleeved on the outer side of the first reciprocating screw rod 62, the top end of the first spring 65 is fixedly connected with the first slider 64 and the bottom end is fixedly connected with the annular sleeve plate 66, the L-shaped connecting arm 67 is fixedly arranged at the right side of the bottom of the annular sleeve plate 66, the second crucible 68 is fixedly arranged at the bottom end of the L-shaped connecting arm 67, so that when the second bevel gear 63 rotates, the second bevel gear 63 drives the first reciprocating screw rod 62 to rotate, and at this time, the first slide block 64 drives the second crucible 68 to lift outside the first reciprocating screw rod 62.
In addition, the closing mechanism 7 includes an installation block 71, a first sliding rod 72, a second spring 73, a third fixing plate 74, a closing plate 75 and a positioning collar 76, the installation block 71 is fixedly arranged on the right side of the second crucible 68, the first sliding rod 72 is fixedly arranged in the middle of the right side of the installation block 71, the second spring 73 and the third fixing plate 74 are both sleeved on the outer side of the first sliding rod 72, the left end of the second spring 73 is fixedly connected with the installation block 71, and the right end of the second spring 73 is fixedly connected with the third fixing plate 74, the closing plate 75 is fixedly arranged at the bottom of the third fixing plate 74, and the positioning collar 76 is fixedly arranged on the right side of the bottom of the closing plate 75, so that when the closing plate 75 moves to the right, the discharge port at the bottom of the second crucible 68 is opened, and the gold pieces, palladium pieces and mother alloy inside the second crucible 68 fall into the first crucible 22.
As shown in fig. 4, the triggering mechanism 8 includes a fixed sleeve 81, a second sliding rod 82, a first connecting plate 83, a third spring 84, a triggering rod 85, a second connecting plate 86 and a fourth spring 87, the fixed sleeve 81 is fixedly connected with the inner wall of the furnace body 21, the second sliding rod 82 is slidably disposed inside the fixed sleeve 81, the first connecting plate 83 and the third spring 84 are both sleeved outside the second sliding rod 82, the first connecting plate 83 is fixedly connected with the second sliding rod 82, the triggering rod 85 vertically penetrates through the second sliding rod 82 and is slidably connected with the second sliding rod 82, the second connecting plate 86 and the fourth spring 87 are both sleeved outside the triggering rod 85, the second connecting plate 86 is fixedly connected with the triggering rod 85, the top end of the fourth spring 87 is fixedly connected with the second connecting plate 86, and the bottom end of the fourth spring 87 is fixedly connected with the second sliding rod 82, so that when the trigger rod 85 drives the second sliding rod 82 into the fixing sleeve 81, the trigger rod 85 simultaneously drives the closing plate 75 to move right through the positioning collar 76.
As shown in fig. 4 and 5, the second transmission mechanism 9 includes a fourth fixing plate 91, a second reciprocating screw 92, a second driven sprocket 93, a second slider 94, a side plate 95, an intermediate shaft 96, a fifth spring 97 and a toggle block 98, the fourth fixing plate 91 is fixedly disposed at the bottom of the fixing sleeve 81, the second reciprocating screw 92 penetrates through the fourth fixing plate 91 and is rotatably connected with the fourth fixing plate 91 through a bearing, the second driven sprocket 93 is fixedly disposed at the left end of the second reciprocating screw 92, the second driven sprocket 93 is in transmission connection with another driving sprocket 47 through a chain, the second slider 94 is sleeved outside the second reciprocating screw 92 and is in threaded connection with the second reciprocating screw 92, two side plates 95 are disposed, both side plates 95 are fixedly disposed at the top of the second slider 94, the intermediate shaft 96 is disposed between the two side plates 95, and the two ends of the fifth spring 97 are respectively rotatably connected with the two side plates 95 through bearings, the fifth spring 97 and the shifting block 98 are sleeved outside the intermediate shaft 96, the fifth spring 97 is fixedly connected with the intermediate shaft 96, one end of the shifting block 98 is fixedly connected with the fifth spring 97 and the other end is fixedly connected with the adjacent side plate 95, so that when the second driven sprocket 93 rotates, the second reciprocating screw 92 drives the second slider 94 to move left and right, when the second slider 94 drives the fifth spring 97 to move right, the bottom end of the trigger rod 85 is pushed, and when the bottom end of the trigger rod 85 is in the state of moving left of the fifth spring 97 to realize the collinearity with the fifth spring 97 in the horizontal direction, the fifth spring 97 rotates to the horizontal state with the intermediate shaft 96 as the axis due to the blocking of the trigger rod 85, and moves to the left of the trigger rod 85 from the right of the trigger rod 85, and when the trigger rod 85 is no longer in contact with the fifth spring 97, due to the acting force of the toggle block 98, the fifth spring 97 is reset to the vertical state at this time, and the pushing of the trigger lever 85 is realized in the process of moving right.
As shown in fig. 6, a method for preparing a bonding alloy silver wire specifically includes the following steps:
s1, preparing materials: according to weight percentage, respectively taking 0.1-9.0 wt% of gold sheet with the purity of 99.99 wt%, 2.5.0-7.5.0 wt% of palladium sheet with the purity of 99.97 wt%, 0-0.26 wt% of Au-Be master alloy, 0-2.4 wt% of Au-Ca master alloy, 0-2.6 wt% of Au-Ce master alloy, 0-12.4 wt% of Au-Cu master alloy and the balance of silver with the purity of 99.99 wt%;
s2, feeding for the first time: placing gold sheets, palladium sheets and the mother alloy to be added into a second crucible 68, and placing silver with the purity of 99.999 wt% into a first crucible 22;
s3, vacuum melting: the furnace body 21 is vacuumized, and when the vacuum degree in the furnace body 21 reaches 0.1 multiplied by 10-3At Pa, the medium frequency induction heating device 12 is used for heating the first crucible 22, when the temperature in the furnace body 21 reaches 1050-;
s4, cooling and heat dissipation: in the heating process of the furnace body 21, cold air is input into the arc-shaped sealing cover 31 through the air inlet pipe 32 by the air cooler 33, the cold air exchanges heat with the furnace body 21, the furnace body 21 is cooled, at the moment, the valve on the first exhaust pipe is in an open state, the valve on the second exhaust pipe 41 is in a closed state, and the heated air flow is exhausted by the first exhaust pipe after heat exchange;
s5, feeding for the second time: the valve on the first exhaust pipe is closed, the valve on the second exhaust pipe 41 is opened at the same time, at this time, hot air flows into the hollow plate 42 through the second exhaust pipe 41, then is shunted by the shunt branch pipes 43 and then blows the fan 46, so that the fan 46 drives the driving sprockets 47 to rotate, and the two driving sprockets 47 respectively drive the first driven sprocket 54 and the second driven sprocket 93 to rotate when rotating;
when the first driven sprocket 54 rotates, the second bevel gear 63 is driven to rotate by the second rotating shaft 51 and the first bevel gear 53, so that the second bevel gear 63 drives the first reciprocating screw rod 62 to rotate, at the moment, the first slider 64 drives the second crucible 68 to lift on the outer side of the first reciprocating screw rod 62, when the positioning lantern ring 76 is sleeved on the outer side of the top end of the trigger rod 85 due to the descending of the second crucible 68, and the trigger rod 85 is pressed downwards, so that the bottom end of the trigger rod 85 and the fifth spring 97 are arranged in a collinear manner in the horizontal direction;
when the second driven sprocket 93 rotates, the second reciprocating screw 92 drives the second slider 94 to move left and right, when the second slider 94 drives the fifth spring 97 to move right, the bottom end of the trigger rod 85 is pushed, so that the trigger rod 85 drives the second sliding rod 82 to enter the fixed sleeve 81, meanwhile, the trigger rod 85 drives the closing plate 75 to move right through the positioning sleeve ring 76, at the moment, the discharge hole at the bottom of the second crucible 68 is opened, and gold sheets, palladium sheets and mother alloy in the second crucible 68 fall into the first crucible 22;
with the continuous rotation of the first reciprocating screw rod 62, the first reciprocating screw rod 62 drives the second crucible 68 to reset through the first sliding block 64, at this time, the valve on the first exhaust pipe is opened, and the valve on the second exhaust pipe 41 is closed, so that the interior of the furnace body 21 is maintained at 1050-;
s6, drawing and casting the alloy rod: stopping vacuumizing, and filling argon gas to keep the pressure inside the furnace body 21 at 0.01-0.05Pa, simultaneously opening the stop valve 24, and allowing the molten metal inside the first crucible 22 to flow to a wire outlet nozzle at the bottom of the furnace body 21 through the guide pipe 23 to obtain an alloy rod with a smooth surface;
s7, rough drawing, medium drawing and fine drawing: the alloy bar continuously cast by adopting a continuous casting method is subjected to rough drawing, intermediate drawing and fine drawing to be drawn into micron-sized semi-finished filaments;
s8, intermediate annealing: annealing the alloy silver wire obtained by fine drawing at the temperature of 350-450 ℃, wherein the winding tension is 3-15g, and the winding speed is 150-250 rpm;
s9, superfine drawing: drawing the alloy silver wire subjected to intermediate annealing into a finished product size required by a customer, wherein the elongation of a die is 4-9%, and the wire drawing speed is 180-;
s10, final annealing: annealing the alloy silver wire with the finished product size at the temperature of 450-600 ℃, wherein the winding tension is 3-15g, and the winding speed is 100-200 rpm;
s11, winding: the winding tension is 3-30g, and the winding speed is 500-750 rpm.
Example 3
Different from the above embodiment, in order to better blend the gold plate, the palladium plate and the mother alloy to be added into the melted silver, the continuous casting furnace further includes a stirring assembly 10, the stirring assembly 10 includes a rotating disc 101 and a stirring rod 102, the rotating disc 101 is fixedly disposed at the bottom end of the first reciprocating screw rod 62, the stirring rod 102 is fixedly disposed at the left side of the bottom of the rotating disc 101, and the bottom end of the stirring rod 102 is located at the bottom of the inner cavity of the first crucible 22, so that the rotating disc 101 drives the stirring rod 102 to stir the melted silver in the first crucible 22 when the first reciprocating screw rod 62 rotates, and further, the gold plate, the palladium plate, the mother alloy to be added and the liquid silver are rapidly blended.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A bonding alloy silver wire is characterized in that: comprises 0.1 to 9.0 weight percent of gold sheet with the purity of 99.99 weight percent, 2.5.0 to 7.5 weight percent of palladium sheet with the purity of 99.97 weight percent, 0 to 0.26 weight percent of Au-Be master alloy, 0 to 2.4 weight percent of Au-Ca master alloy, 0 to 2.6 weight percent of Au-Ce master alloy, 0 to 12.4 weight percent of Au-Cu master alloy and the balance of silver with the purity of 99.99 weight percent.
2. The method for preparing the bonding alloy silver wire according to claim 1, wherein the method is realized by using a continuous casting furnace, the continuous casting furnace comprises a support assembly (1), a furnace body assembly (2) is fixedly arranged on the left side of the top of the support assembly (1), an air supply mechanism (3) is fixedly arranged on the outer side of the furnace body assembly (2), a conversion mechanism (4) is fixedly connected on the right side of the furnace body assembly (2), a first transmission mechanism (5) is arranged above the conversion mechanism (4) and a second transmission mechanism (9) is arranged below the conversion mechanism (4), a branch pipe (43) in the conversion mechanism (4) branches hot air output by the air supply mechanism (3) so that the hot air blows a fan (46), and then a first rotating shaft (45) is driven to drive a first driven chain wheel (54) in the first transmission mechanism (5) and a second driven chain wheel (93) in the second transmission mechanism (9) The furnace body component (2) is characterized in that a lifting feeding mechanism (6) is arranged at the top of an inner cavity of a furnace body (21), a first reciprocating screw rod (62) in the lifting feeding mechanism (6) is driven by a first bevel gear (53) in a first transmission mechanism (5) to drive a second crucible (68) and a sealing mechanism (7) to integrally lift in a reciprocating manner, the bottom of the right side of the lifting feeding mechanism (6) is fixedly provided with the sealing mechanism (7), a sealing plate (75) in the sealing mechanism (7) seals the bottom end of the second crucible (68), a trigger mechanism (8) is fixedly arranged at the right side of the middle of the inner cavity of the furnace body (21) in the furnace body component (2), the trigger mechanism (8) is positioned above a second transmission mechanism (9), and a trigger rod (85) in the trigger mechanism (8) descends when being subjected to the pressure of a positioning sleeve ring (76) in the sealing mechanism (7), and the second transmission mechanism is collinear with a fifth spring (97) in the second transmission mechanism (9) in the horizontal direction, and the fifth spring (97) in the second transmission mechanism (9) drives a second reciprocating screw rod (92) to reciprocate left and right so as to push the trigger rod (85).
3. The method for preparing the bonding alloy silver wire according to claim 2, wherein the method comprises the following steps: the bracket assembly (1) comprises a base (11), an intermediate frequency induction heating device (12) and a mounting cabinet (13), wherein the intermediate frequency induction heating device (12) is fixedly arranged on the right side of the top of the base (11), and the mounting cabinet (13) is arranged on the front side of the base (11);
the furnace body assembly (2) comprises a furnace body (21), a first crucible (22), a flow guide pipe (23) and a stop valve (24), the furnace body (21) is fixedly arranged on the left side of the top of the base (11), the first crucible (22) is fixedly arranged in the middle of an inner cavity of the furnace body (21), the flow guide pipe (23) is fixedly arranged at the bottom of the first crucible (22) in a penetrating manner, and the stop valve (24) is arranged on the flow guide pipe (23) and is fixedly connected with the inner wall of the furnace body (21);
air feed mechanism (3) include arc sealed cowling (31), intake pipe (32) and air-cooler (33), arc sealed cowling (31) fixed cup joint sets up in furnace body (21) rear side top, intake pipe (32) left end is connected and right-hand member and air-cooler (33) are connected with arc sealed cowling (31), air-cooler (33) are fixed to be set up in intermediate frequency induction heating device (12) top right side.
4. The method for preparing the bonding alloy silver wire according to claim 3, wherein the method comprises the following steps: the conversion mechanism (4) comprises a second exhaust pipe (41), a hollow plate (42), a shunt branch pipe (43), a square sealing cover (44), a first rotating shaft (45), a fan (46) and a driving sprocket (47), wherein the left end of the second exhaust pipe (41) is connected with an arc sealing cover (31), the right end of the second exhaust pipe is connected with the hollow plate (42), the left side of the arc sealing cover (31) is fixedly provided with a first exhaust pipe in a penetrating manner, valves are arranged on the first exhaust pipe and the second exhaust pipe (41), a plurality of shunt branch pipes (43) are arranged, the shunt branch pipes (43) are uniformly and fixedly arranged on the right side wall of an inner cavity of the hollow plate (42) in a penetrating manner, the square sealing cover (44) is fixedly arranged on the right side of the hollow plate (42), the first rotating shaft (45) is fixedly arranged at the center of the right side of the square sealing cover (44) in a penetrating manner, and the first rotating shaft (45) is rotatably connected with the square sealing cover (44) through a bearing, the left end of the fan (46) extends to the inner side of the square sealing cover (44), the fan is positioned inside the square sealing cover (44) and fixedly sleeved on the outer side of the first rotating shaft (45), two driving chain wheels (47) are arranged, and the two driving chain wheels (47) are fixedly sleeved on the right end of the outer side of the first rotating shaft (45);
the first transmission mechanism (5) comprises a second rotating shaft (51), a first fixing plate (52), a first bevel gear (53) and a first driven chain wheel (54), the second rotating shaft (51) penetrates through the outer wall of the furnace body (21) and extends to the inside of the furnace body (21), the first fixing plate (52) is arranged on the outer side of the second rotating shaft (51) in a sleeved mode through rotation of a bearing, the first fixing plate (52) is fixedly connected with the inner wall of the furnace body (21), the first bevel gear (53) is fixedly arranged at the left end of the second rotating shaft (51) and the first driven chain wheel (54) is fixedly arranged at the right end of the first driven chain wheel (54), and the first driven chain wheel (54) is in transmission connection with any one driving chain wheel (47) through a chain.
5. The method for preparing the bonding alloy silver wire according to claim 4, wherein the method comprises the following steps: the lifting feeding mechanism (6) comprises a second fixing plate (61), a first reciprocating screw rod (62), a second bevel gear (63), a first sliding block (64), a first spring (65), an annular sleeve plate (66), an L-shaped connecting arm (67) and a second crucible (68), the second fixing plate (61) is fixedly connected with the inner wall of the furnace body (21), the first reciprocating screw rod (62) penetrates through the second fixing plate (61) and is rotatably connected with the second fixing plate (61) through a bearing, the second bevel gear (63) is fixedly arranged at the top end of the first reciprocating screw rod (62) and is meshed with the first bevel gear (53), the first sliding block (64) is sleeved on the outer side of the first reciprocating screw rod (62) and is in threaded connection with the first reciprocating screw rod (62), the first spring (65) and the annular sleeve plate (66) are both sleeved on the outer side of the first reciprocating screw rod (62), the top end of the first spring (65) is fixedly connected with the first sliding block (64), the bottom end of the first spring is fixedly connected with the annular sleeve plate (66), the L-shaped connecting arm (67) is fixedly arranged on the right side of the bottom of the annular sleeve plate (66), and the second crucible (68) is fixedly arranged at the bottom end of the L-shaped connecting arm (67);
the sealing mechanism (7) comprises an installation block (71), a first sliding rod (72), a second spring (73), a third fixing plate (74), a sealing plate (75) and a positioning lantern ring (76), the installation block (71) is fixedly arranged on the right side of the second crucible (68), the first sliding rod (72) is fixedly arranged in the middle of the right side of the installation block (71), the second spring (73) and the third fixing plate (74) are both sleeved and arranged on the outer side of the first sliding rod (72), the left end of the second spring (73) is fixedly connected with the installation block (71) and the right end of the second spring is fixedly connected with the third fixing plate (74), the sealing plate (75) is fixedly arranged at the bottom of the third fixing plate (74), and the positioning lantern ring (76) is fixedly arranged on the right side of the bottom of the sealing plate (75).
6. The method for preparing the bonding alloy silver wire according to claim 5, wherein the method comprises the following steps: the trigger mechanism (8) comprises a fixed sleeve (81), a second sliding rod (82), a first connecting plate (83), a third spring (84), a trigger rod (85), a second connecting plate (86) and a fourth spring (87), the fixed sleeve (81) is fixedly connected with the inner wall of the furnace body (21), the second sliding rod (82) is arranged at the inner side of the fixed sleeve (81) in a sliding manner, the first connecting plate (83) and the third spring (84) are both sleeved and arranged at the outer side of the second sliding rod (82), the first connecting plate (83) is fixedly connected with the second sliding rod (82), the trigger rod (85) penetrates through the second sliding rod (82) in the vertical direction and is slidably connected with the second sliding rod (82), the second connecting plate (86) and the fourth spring (87) are both sleeved and arranged at the outer side of the trigger rod (85), and the second connecting plate (86) is fixedly connected with the trigger rod (85), the top end of the fourth spring (87) is fixedly connected with the second connecting plate (86) and the bottom end of the fourth spring is fixedly connected with the second sliding rod (82).
7. The method for preparing the bonding alloy silver wire according to claim 6, wherein the method comprises the following steps: the second transmission mechanism (9) comprises a fourth fixing plate (91), a second reciprocating screw rod (92), a second driven sprocket (93), a second sliding block (94), a side plate (95), an intermediate shaft (96), a fifth spring (97) and a toggle block (98), the fourth fixing plate (91) is fixedly arranged at the bottom of the fixing sleeve (81), the second reciprocating screw rod (92) penetrates through the fourth fixing plate (91) and is rotatably connected with the fourth fixing plate (91) through a bearing, the second driven sprocket (93) is fixedly arranged at the left end of the second reciprocating screw rod (92), the second driven sprocket (93) is in transmission connection with another driving sprocket (47) through a chain, the second sliding block (94) is sleeved on the outer side of the second reciprocating screw rod (92) and is in threaded connection with the second reciprocating screw rod (92), two side plates (95) are arranged, and the two side plates (95) are fixedly arranged at the top of the second sliding block (94), the intermediate shaft (96) is located between the two side plates (95), the two ends of the intermediate shaft are rotatably connected with the two side plates (95) through bearings respectively, the fifth spring (97) and the shifting block (98) are sleeved on the outer side of the intermediate shaft (96), the fifth spring (97) is fixedly connected with the intermediate shaft (96), one end of the shifting block (98) is fixedly connected with the fifth spring (97) and the other end of the shifting block is fixedly connected with the adjacent side plates (95).
8. The method for preparing the bonding alloy silver wire according to claim 7, wherein the method comprises the following steps: the continuous casting furnace further comprises a stirring assembly (10), the stirring assembly (10) comprises a rotating disc (101) and a stirring rod (102), the rotating disc (101) is fixedly arranged at the bottom end of the first reciprocating screw rod (62), the stirring rod (102) is fixedly arranged on the left side of the bottom of the rotating disc (101), and the bottom end of the stirring rod (102) is positioned at the bottom of the inner cavity of the first crucible (22).
9. The method for preparing the bonding alloy silver wire according to claim 1, which is characterized by comprising the following steps:
s1, preparing materials: according to weight percentage, respectively taking 0.1-9.0 wt% of gold sheet with the purity of 99.99 wt%, 2.5.0-7.5.0 wt% of palladium sheet with the purity of 99.97 wt%, 0-0.26 wt% of Au-Be master alloy, 0-2.4 wt% of Au-Ca master alloy, 0-2.6 wt% of Au-Ce master alloy, 0-12.4 wt% of Au-Cu master alloy and the balance of silver with the purity of 99.99 wt%;
s2, feeding for the first time: placing gold sheets, palladium sheets and mother alloy to be added into a second crucible (68), and placing silver with the purity of 99.999 wt% into a first crucible (22);
s3, vacuum melting: the furnace body (21) is vacuumized, and when the vacuum degree in the furnace body (21) reaches 0.1 multiplied by 10-3Beginning to use intermediate frequency induction at PaThe heating device (12) heats the first crucible (22), when the internal temperature of the furnace body (21) reaches 1050-;
s4, cooling and heat dissipation: in the temperature rising process of the furnace body (21), cold air is input into the arc-shaped sealing cover (31) by the air cooler (33) through the air inlet pipe (32), the cold air exchanges heat with the furnace body (21), the furnace body (21) is cooled, at the moment, a valve on the first exhaust pipe is in an open state, a valve on the second exhaust pipe (41) is in a closed state, and air flow heated after heat exchange is discharged by the first exhaust pipe;
s5, feeding for the second time: the valve on the first exhaust pipe is closed, the valve on the second exhaust pipe (41) is opened, at the same time, hot air flows into the hollow plate (42) through the second exhaust pipe (41), then is shunted by the shunt branch pipes (43) and then blows the fan (46), so that the fan (46) drives the driving chain wheels (47) to rotate, and the two driving chain wheels (47) respectively drive the first driven chain wheels (54) and the second driven chain wheels (93) to rotate when rotating;
when the first driven chain wheel (54) rotates, the second bevel gear (63) is driven to rotate through the second rotating shaft (51) and the first bevel gear (53), the second bevel gear (63) drives the first reciprocating screw rod (62) to rotate, at the moment, the first sliding block (64) drives the second crucible (68) to lift on the outer side of the first reciprocating screw rod (62), when the positioning lantern ring (76) is sleeved on the outer side of the top end of the trigger rod (85) due to the falling of the second crucible (68), the trigger rod (85) is pressed downwards, and the bottom end of the trigger rod (85) and the fifth spring (97) are arranged in a collinear mode in the horizontal direction;
when the second driven sprocket (93) rotates, the second reciprocating screw rod (92) drives the second sliding block (94) to move left and right, when the second sliding block (94) drives the fifth spring (97) to move right, the bottom end of the trigger rod (85) is pushed, the trigger rod (85) drives the second sliding rod (82) to enter the fixed sleeve (81), meanwhile, the trigger rod (85) drives the sealing plate (75) to move right through the positioning sleeve ring (76), at the moment, the discharge hole at the bottom of the second crucible (68) is opened, and the gold sheets, the palladium sheets and the mother alloy in the second crucible (68) fall into the first crucible (22);
with the continuous rotation of the first reciprocating screw rod (62), the first reciprocating screw rod (62) drives the second crucible (68) to reset through the first sliding block (64), at the moment, the valve on the first exhaust pipe is opened, meanwhile, the valve on the second exhaust pipe (41) is closed, the interior of the furnace body (21) is maintained at 1050-;
s6, drawing and casting the alloy rod: stopping vacuumizing, and filling argon gas to keep the pressure inside the furnace body (21) at 0.01-0.05Pa, simultaneously opening the stop valve (24), and enabling the molten metal inside the first crucible (22) to flow to a wire outlet nozzle at the bottom of the furnace body (21) through the guide pipe (23) to obtain an alloy rod with a smooth surface;
s7, rough drawing, medium drawing and fine drawing: the alloy bar continuously cast by adopting a continuous casting method is subjected to rough drawing, intermediate drawing and fine drawing to be drawn into micron-sized semi-finished filaments;
s8, intermediate annealing: annealing the alloy silver wire obtained by fine drawing at the temperature of 350-450 ℃, wherein the winding tension is 3-15g, and the winding speed is 150-250 rpm;
s9, superfine drawing: drawing the alloy silver wire subjected to intermediate annealing into a finished product size required by a customer, wherein the elongation of a die is 4-9%, and the wire drawing speed is 180-;
s10, final annealing: annealing the alloy silver wire with the finished product size at the temperature of 450-600 ℃, wherein the winding tension is 3-15g, and the winding speed is 100-200 rpm;
s11, winding: the winding tension is 3-30g, and the winding speed is 500-750 rpm.
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