CN202519320U - Continuous high-purity high-conductivity smelting device - Google Patents
Continuous high-purity high-conductivity smelting device Download PDFInfo
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- CN202519320U CN202519320U CN2012200542478U CN201220054247U CN202519320U CN 202519320 U CN202519320 U CN 202519320U CN 2012200542478 U CN2012200542478 U CN 2012200542478U CN 201220054247 U CN201220054247 U CN 201220054247U CN 202519320 U CN202519320 U CN 202519320U
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Abstract
The utility model discloses a continuous high-purity high-conductivity smelting device which comprises a smelting furnace, a holding furnace and a degassing device, and a compartment is arranged between the smelting furnace and the holding furnace; the degassing device is arranged at the upper part of the compartment; the degassing device consists of rack, and a main spindle is vertically sheathed on the rack; the main spindle is connected with a main spindle motor by a rotation joint; a metal rotating rod is sheathed at the lower end of the main spindle; a graphite rotating rod is sheathed on the metal rotating rod; the main spindle and a heat-insulating device are connected movably; and the heat-insulating device is connected with a lifting motor by a lifting lead screw. The continuous smelting device is adopted, so that the production process is simple, the production procedures are stable; the compartment is arranged between the smelting furnace and the holding furnace; the degassing device is arranged in the compartment II, so that not only can sufficient degassing and deoxygenizing effects be ensured, but also the stability of liquid level in the holding furnace can be ensured, the produced oxygen-free copper has low oxygen content and high conductivity, and the oxygen content is smaller than or equal to 4ppm and the conductivity is larger than or equal to 101% IACS (International Annealed Copper Standard).
Description
Technical field
The utility model relates to a kind of high-purity high copper material continuous smelting device of leading, and belongs to the non-ferrous metals casting technical field.
Background technology
Oxygen free copper is widely used in fields such as electrician, electronics, communication and electron tube because have high conductivity, high thermal conductivity and good anti-hydrogen embrittlement property and good processing characteristics and welding property.But copper is easy " air-breathing " when high melt, combines to form Red copper oxide with oxygen, the cuprous crystal boundary place that is distributed in of solidification and crystallization rear oxidation, and the rising of oxygen level descends the electric conductivity of copper in the copper, can not reach the electric conductivity more than 100%.
Oxygen free copper has strict requirement to oxygen level, if oxygen level is high, quality product is had following adverse influence:
1. generate Cu with copper
2O fragility phase forms Cu-Cu
2The O eutectic is distributed on the crystal boundary with network organization, causes the mechanical property of copper bar to descend, and in following process, causes phenomenon of rupture easily.
2. cause the oxygen-free copper bar electric conductivity to descend.
3. when hydrogen annealing, crack or bubble.
Oxygen level is generally greater than 50ppm in the pure copper material that the conventional melting and casting method of employing is produced; And along with the development of industries such as electrician, electronics, communication; Especially the copper material of the high conduction of the high purity low oxygen content that uses such as electron tube; Then require oxygen level≤5ppm, electric conductivity is greater than 101%IACS.
The working method of oxygen free copper mainly contains following three kinds at present:
First kind: the vacuum oven melting.Vacuum melting is that smelting furnace and casting equipment are arranged in the airtight box hat; Vacuumize then, melting and the casting of copper are remained under the vacuum state carry out, to reach the purpose of secluding air and deoxygenation; But this method complex equipments; Operation inconvenience, lumber recovery is lower, should not form the large batch of production of serialization.
Second kind: the antivacuum stove melting of semicontinuous casting.This method be with high-temperature copper liquid from smelting furnace metaideophone chute, get into holding furnace through chute again, in this process, high-temperature copper liquid possibly be exposed in the air, is easy to air-breathingly, quality is unstable.
The third: on draw continuous casting.It is after adopting conventional smelting furnace with the copper fusing that up-drawing method is produced oxygen free copper; Towbar is inserted in the copper liquid behind the following pinch roll through towing mechanism and carbon tube mold by last, and pinch roll clamps then, utilizes towing mechanism that towbar is drawn according to certain speed from bottom to top copper is proposed and passes through carbon tube mold solidification and crystallization; Owing to shrink during the copper solidification and crystallization; Form the negative pressure of moment, the discharging of oxygen when being beneficial to copper liquid and solidifying, and realize reducing the purpose of oxygen.But this method only can be limited with Control for Oxygen Content about 10ppm, can not be reduced to below the 5ppm.
The utility model content
The purpose of the utility model is to provide a kind of high-purity high copper material continuous smelting device of leading, and the utility model production technique is simple, stable production process, good product quality, oxygen level≤5ppm, electric conductivity>=101%IACS.
In order to reach above-mentioned purpose, the technical scheme of the utility model is:
A kind of high-purity high copper material continuous smelting device of leading comprises smelting furnace, holding furnace and degasifying device, between described smelting furnace and the holding furnace compartment is installed; Described compartment top is equipped with degasifying device; Described degasifying device comprises frame, and vertical sleeve is equipped with main shaft on the described frame; Described main shaft links to each other with spindle motor through swivel joint; Described main shaft lower end is set with the metal bull stick; Be set with the graphite bull stick on the described metal bull stick; Described main shaft and heat-proof device are movably connected; Described heat-proof device links to each other with lifting motor through elevating screw.
Described compartment comprises first compartment, second compartment and the 3rd compartment; Described smelting furnace links to each other with first compartment through first-class ditch; Described first compartment links to each other with second compartment through the second stream ditch; Described second compartment links to each other with the 3rd compartment through the 3rd stream ditch; Described the 3rd compartment links to each other with holding furnace through the 4th stream ditch.
A kind of high-purity high copper material continuous smelting method of leading comprises the steps: 1) be raw material with the high-quality cathode copper of its surface no copper beans, sour mark defective,, excise and put into smelting furnace behind the hangers and carry out melting; 2) step 1) is melted copper liquid flows into first compartment in the compartment through first-class ditch, then gets into second compartment through the second stream ditch; Copper liquid in second compartment charges into the rare gas element of metering and is dispersed as micro-bubble through the graphite bull stick on the continuous degasifying device in copper liquid, it is dispersed in the copper liquid uniformly; Because hydrogen, oxygen partial pressure are zero in the small bubbles; Oxygen in the copper liquid, hydrogen dividing potential drop are high, based on hydrogen and oxygen pressure component poor inside and outside bubble, the hydrogen and the oxygen that are fused in the melt are constantly spread to bubble; And along with the rising of bubble and effusion and be discharged in the atmosphere, thereby reach the purpose of degasification; Make the copper flow behind the 3rd stream ditch, get into the 3rd compartment then; 3) with step 2) in copper liquid after the degasification flow in the holding furnace through the stream of the 4th on the 3rd compartment ditch; 4) draw the copper bar on the traction of the copper liquid utilization in the holding furnace unit disengaging type vacuum, the copper bar gets into take-up then.
Temperature in the described step 1) in the smelting furnace is 1150 ℃～1160 ℃, adopts the wooden carbon of oven dry to cover, and guarantees the reducing atmosphere of smelting furnace; Described charcoal granularity is 30mm～50mm, cladding thickness 100mm～150mm.
Described step 2) the overall size length * wide * height of compartment is 720 * 600 * 690mm in, and the size of described first-class ditch, the second stream ditch, the 3rd stream ditch, the 4th stream ditch is respectively 120 * 100 * 110, and the 3rd stream ditch exceeds furnace bottom 100～400mm.
Described step 2) it is a kind of in 30%～70% nitrogen and the nitric oxide production mixed gas that rare gas element in adopts 99.996% argon gas or 99.996% nitrogen or nitrogen ratios; The pressure of source of the gas outlet is 0.5MPa, and flow is 1～1.25Nm
3/ h, rotor speed is 50～150r/min.
Temperature in the described step 3) in the holding furnace is 1140 ℃～1150 ℃, adopts graphite phosphorus sheet to cover, and its cladding thickness is 30mm～40mm.
Described the 4th stream ditch and holding furnace front end are installed the foamed ceramic filter plate device, have the slagging-off effect.
Described deslagging device is a foamed ceramic filter plate, in the last effect that plays slagging-off when drawing the copper bar.
The bar speed of drawing of traction unit is 500～1500mm/min in the described step 4), and drawing shank diameter is Ф 12.5mm～Ф 30mm, and the refrigeration cycle leaving water temperature(LWT) is 35 ℃～50 ℃.
The beneficial effect of the utility model is: the utility model adopts the continuous smelting device, and production technique is simple, stable production process; Through between smelting furnace and holding furnace, setting up compartment, continuous degasifying device is installed in the compartment II, not only can guarantee sufficient degasification and deoxidation effect; Can also guarantee the stability of holding furnace liquid level; The oxygen free copper oxygen level of producing is low high with electric conductivity, oxygen level≤5ppm, electric conductivity>=101%IACS.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is that the utility model is not with the structural representation of degasifying device;
Fig. 3 is the vertical view of Fig. 2.
Embodiment
Embodiment 1
Like Fig. 1, Fig. 2, a kind of high-purity high copper material continuous smelting device of leading shown in Figure 3, comprise smelting furnace 1, holding furnace 2 and degasifying device 4, between described smelting furnace 1 and the holding furnace 2 compartment 3 is installed; Described compartment 3 tops are equipped with degasifying device 4; Described degasifying device 4 comprises frame 8, and vertical sleeve is equipped with main shaft 5 on the described frame 8; Described main shaft 5 links to each other with spindle motor 10 through swivel joint 9; Described main shaft 5 lower ends are set with metal bull stick 6; Be set with graphite bull stick 7 on the described metal bull stick 6; Described main shaft 5 is movably connected with heat-proof device 11; Described heat-proof device 11 links to each other with lifting motor 13 through elevating screw 12.Described compartment 3 comprises first compartment 14, second compartment 15 and the 3rd compartment 16; Described smelting furnace 1 links to each other with first compartment 14 through first-class ditch 17; Described first compartment 14 links to each other with second compartment 15 through the second stream ditch 18; Described second compartment 15 links to each other with the 3rd compartment 16 through the 3rd stream ditch 19; Described the 3rd compartment 16 links to each other with holding furnace 2 through the 4th stream ditch 20.
A kind of high-purity high copper material continuous smelting method of leading of present embodiment comprises the steps: 1) be raw material with the high-quality cathode copper of its surface no copper beans, sour mark defective, excise and put into smelting furnace 1 behind the hangers and carry out melting; Wherein the temperature in the smelting furnace 1 is 1150 ℃～1160 ℃, adopts the wooden carbon of oven dry to cover, and guarantees the reducing atmosphere of smelting furnace; Described charcoal granularity is 30mm～50mm, cladding thickness 100mm～150mm.2) step 1) is melted copper liquid then passes through the second stream ditch 18 and gets into second compartment 15 through first compartment 14 that first-class ditch 17 flows in the compartment 3; Copper liquid in second compartment 15 charges into the rare gas element of metering and is dispersed as micro-bubble through the graphite bull stick 7 on the continuous degasifying device 4 in copper liquid, it is dispersed in the copper liquid uniformly; It is a kind of in 30%～70% nitrogen and the nitric oxide production mixed gas that described rare gas element adopts 99.996% argon gas or 99.996% nitrogen or nitrogen ratios; The pressure of source of the gas outlet is 0.5MPa, and flow is 1～1.25Nm
3/ h, rotor speed is 50～150r/min.Because hydrogen, oxygen partial pressure are zero in the small bubbles; Oxygen in the copper liquid, hydrogen dividing potential drop are high, based on hydrogen and oxygen pressure component poor inside and outside bubble, the hydrogen and the oxygen that are fused in the melt are constantly spread to bubble; And along with the rising of bubble and effusion and be discharged in the atmosphere, thereby reach the purpose of degasification; Make the copper flow behind the 3rd stream ditch 19, get into the 3rd compartment 16 then; Overall size length * wide * height: 720 * 600 * 690mm of described compartment 3; The size of described first-class ditch 17, the second stream ditch 18, the 3rd stream ditch 19, the 4th stream ditch 20 is respectively length * wide * height: 120 * 100 * 110, and the 3rd flow ditch 19 and exceed furnace bottom 100～400mm.3) with step 2) in copper liquid after the degasification flow in the holding furnaces 2 through the stream of the 4th on the 3rd compartment 16 ditch 20; Temperature in the holding furnace 2 is 1140 ℃～1150 ℃, adopts graphite phosphorus sheet to cover, and its cladding thickness is 30mm～40mm.Wherein the 4th stream ditch 20 is installed the deslagging device foamed ceramic filter plate with holding furnace 2 front ends, in the last effect that plays slagging-off when drawing the copper bar.4) draw the copper bar on the traction of the copper liquid utilization in the holding furnace unit disengaging type vacuum, the copper bar gets into take-up then.The bar speed of drawing of traction unit is 500～1500mm/min, and drawing shank diameter is Ф 12.5mm～Ф 30mm, and the refrigeration cycle leaving water temperature(LWT) is 35 ℃～50 ℃.
Present embodiment adopts the continuous smelting device, and production technique is simple, stable production process; Through between smelting furnace and holding furnace, setting up compartment, continuous degasifying device is installed in the compartment II, not only can guarantee sufficient degasification and deoxidation effect; Can also guarantee the stability of holding furnace liquid level; The oxygen free copper oxygen level of producing is low high with electric conductivity, oxygen level≤5ppm, electric conductivity>=101%IACS.
Claims (2)
1. high-purity high copper material continuous smelting device of leading is characterized in that: comprise smelting furnace (1), holding furnace (2) and degasifying device (4), between described smelting furnace (1) and the holding furnace (2) compartment (3) is installed; Described compartment (3) top is equipped with degasifying device (4); Described degasifying device (4) comprises frame (8), and described frame (8) goes up vertical sleeve main shaft (5) is housed; Described main shaft (5) links to each other with spindle motor (10) through swivel joint (9); Described main shaft (5) lower end is set with metal bull stick (6); Be set with graphite bull stick (7) on the described metal bull stick (6); Described main shaft (5) is movably connected with heat-proof device (11); Described heat-proof device (11) links to each other with lifting motor (13) through elevating screw (12).
2. a kind of high-purity high copper material continuous smelting device of leading according to claim 1, it is characterized in that: described compartment (3) comprises first compartment (14), second compartment (15) and the 3rd compartment (16); Described smelting furnace (1) links to each other with first compartment (14) through first-class ditch (17); Described first compartment (14) links to each other with second compartment (15) through the second stream ditch (18); Described second compartment (15) links to each other with the 3rd compartment (16) through the 3rd stream ditch (19); Described the 3rd compartment (16) links to each other with holding furnace (2) through the 4th stream ditch 20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200542478U CN202519320U (en) | 2012-02-20 | 2012-02-20 | Continuous high-purity high-conductivity smelting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200542478U CN202519320U (en) | 2012-02-20 | 2012-02-20 | Continuous high-purity high-conductivity smelting device |
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| CN202519320U true CN202519320U (en) | 2012-11-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564131A (en) * | 2012-02-20 | 2012-07-11 | 绍兴市力博电气有限公司 | Device and method for continuous smelting of high-purity high-conductivity copper |
| CN106086445A (en) * | 2016-08-10 | 2016-11-09 | 安徽晋源铜业有限公司 | A kind of cleaning molten method of oxygen-free copper bar |
| CN107523697A (en) * | 2017-09-26 | 2017-12-29 | 浙江金康铜业有限公司 | Deoxygenation dehydrogenation unit is used in a kind of oxygen-free copper material production |
| CN111304458A (en) * | 2020-03-27 | 2020-06-19 | 芜湖楚江合金铜材有限公司 | High accuracy red copper contact pin production is with deoxidization smelting unit |
-
2012
- 2012-02-20 CN CN2012200542478U patent/CN202519320U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102564131A (en) * | 2012-02-20 | 2012-07-11 | 绍兴市力博电气有限公司 | Device and method for continuous smelting of high-purity high-conductivity copper |
| CN106086445A (en) * | 2016-08-10 | 2016-11-09 | 安徽晋源铜业有限公司 | A kind of cleaning molten method of oxygen-free copper bar |
| CN107523697A (en) * | 2017-09-26 | 2017-12-29 | 浙江金康铜业有限公司 | Deoxygenation dehydrogenation unit is used in a kind of oxygen-free copper material production |
| CN111304458A (en) * | 2020-03-27 | 2020-06-19 | 芜湖楚江合金铜材有限公司 | High accuracy red copper contact pin production is with deoxidization smelting unit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180220 |
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| CF01 | Termination of patent right due to non-payment of annual fee |