CN1269270A - Horizontal continuous copper alloy bar casting equipment and technological process - Google Patents

Abstract

The present invention provides an equipment for horizontal continuous casting copper alloy rod material and its technological process. It is characterized by that the core industrial-frequency heater and melting channel of the existent technology are emitted, the bottom of insulating ladle is inclined toward the channel of continuous crystallizer, its insulating ladle adopts multi-layer structure and several kinds of heat-insulating materials so as to raise its heat-insulating property, it is equipped with an operation hole, and adopts coke to preheat internal cavity of insulating ladle and uses diesel oil heater to heat the said ladle. It can obtain high-quality continuous cast rod material, and also is applicable to continuously pull-casting red copper rod material.

Description

The device of horizontal continuous copper alloy bar casting and process

The present invention relates to the device and the process of horizontal continuous copper alloy bar casting.

Before the present invention finishes, the horizontal continuous casting of copper alloy device that " smelting non-ferrous metal and ingot casting " (metallurgical industry publishing house publishes in October, 1988) P176～179 the 9th chapters the 3rd joint is introduced; The Horizontal Casting device that " Shanghai metal (coloured fascicle) " the 13rd volume the 5th phase P14 introduces; The horizontal caster that the product introduction data P4 that " De Mage Technica (Demag Technlca) is about the continuous casting technology of non-ferrous metal and cast iron " German De Mage company (DEMAG Technlca GmbH) published in 1993, P8, P9 introduce, all adopting has core merit frequency heater that channel is heated, the alloy liquid interior by alloy liquid in the channel and insulation bag exchanges mutually, to keep the flowability of alloy liquid in the insulation bag.Requiring heater not cut off the power supply, even still can not cut off the power supply during the production gap, is alloy liquid to keep in the channel, so power consumption is big; Adopt the cold start mode, the first batch of alloy liquation that injects the insulation bag must have individual temperature-fall period, and the flowability of alloy liquid reduces, and must expend the temperature that a large amount of electric energy are used to improve alloy liquid in the insulation bag, and productivity ratio is reduced; Incline when in the insulation bag alloy liquid, need with insulation wrap incline turn 90 degrees above, inconvenient operation; When changing the alloy kind, interior thorax and channel are not easy to clean out, and easily cause batch mixing first, and the bar quality of institute's cast is descended; Second be unsuitable for the many variety production of small lot; The build material of insulation bag only adopts lightweight refracrory, and its heat insulating ability is relatively poor, has also increased the consumption of energy; Crystallizer in the Horizontal Casting device of introducing in " smelting non-ferrous metal and ingot casting " is disposable use, has increased production cost.

The objective of the invention is to, energy savings is provided, changes copper alloy kind convenience and guarantees that institute's cast bar is best in quality, the device of easy to operate horizontal continuous copper alloy bar casting and process.

Comprise insulation bag, crystallizer and diesel fuel heater in the device of horizontal continuous copper alloy bar casting provided by the invention.

The insulation bag is made of the interior thorax that from inside to outside sets gradually, liner, heat-insulation layer, inner insulating layer, outer thermal insulation layer, shell; Interior thorax bottom is ramped shaped, tilts to the passage that connects crystallizer, and is big outer little horn-like in passage is; Handle hole is in insulation bag lower sidewall, and its lower edge is lower than interior thorax bottom; Crystallizer is made by graphite mould and outer water collar interference fit.

Liner is knotted into cylindric with neutral refractory, thickness is 50mm～60mm; Inner chamber is the interior thorax of insulation bag, and the size of interior thorax: diameter is 250mm～400mm, and height is 300mm～500mm; Heat-insulation layer proportion is 0.8g/cm ³～1g/cm ³Light fire brick be built into, thickness is 120mm～130mm; Inner insulating layer is built into diatomite brick, and thickness is 80mm～150mm, and it is real to be incubated cornerite portion plug with diatomite brick; Outer thermal insulation layer is that thickness is the aluminosilicate fiberboard of 20mm～30mm; Shell thickness is that the steel plate of 8mm～10mm is welded; The diameter of handle hole is 120mm～180mm;

The graphite mould hole of crystallizer is regular polygon, the rectangle of φ 30mm～φ 150mm circle or corresponding sectional dimension.

The nozzle of diesel fuel heater is supported on the liquid injection hole top center by hinged cantilever, and jet down.

Use the technology of said apparatus cast copper alloy bar as follows:

(1) light the internal thorax of coke of inserting thorax in the insulation bag and carry out preheating, bore temperature rises to 700 ℃～800 ℃ in treating, coke is taken out by handle hole, and is with the handle hole sprue that handle hole sealing and back-up sand plug is real;

(2) crystallizer is installed on the passway by ring flange;

(3) light diesel fuel heater, with the internal thorax heating of diesel oil flame, bore temperature rises to 1000 ℃～1100 ℃ in treating, the nozzle of diesel fuel heater is removed, and injects first batch of molten alloyed copper from liquid injection port;

(4) start swing mechanism, haulage gear cast copper alloy bar;

(5) in the cast process, repeatedly add molten alloyed copper, keep the flowability of alloy liquid in the insulation bag, guarantee cast copper alloy bar uninterruptedly from liquid injection port;

(6) before finishing, cast adopts last batch of alloy liquid in the diesel fuel heater heat tracing bag, and the alloy liquid cast in the insulation bag is intact.

Compared with the prior art the present invention has following advantage:

(1) saves the power frequency heater, saved the energy, reduced production cost;

(2) carry out preheating with the internal thorax of coke, use the diesel oil flame heat again, prevent to inject in the first batch the cooling of alloy liquid, guaranteed its flowability, improved production efficiency;

(3) the thorax bottom is ramped shaped in the insulation bag, tilt to the passage that connects crystallizer, alloy liquid cast in the insulation bag can be finished and not retain, saved channel again, there is not the batch mixing phenomenon when changing the alloy kind, guarantee the best in quality of alloy bar material, and reduced the workload of thorax in the cleaning, alleviated labour intensity;

(4) handle hole is arranged at insulation bag lower sidewall, and the lower edge be lower than in the thorax bottom, inclining in the insulation bag alloy liquid insulation bag that need not vert, easy to operate;

(5) crystallizer adopts the thicker graphite mould of wall, only needs processing a little to enlarge endoporus after the use, can use repeatedly 3 times at least, has reduced production cost;

(6) the insulation bag adopts sandwich construction, and the insulation material of multiple good heat insulating has improved the heat insulating ability that insulation is wrapped, but energy savings.

Fig. 1 is the structural representation of horizontal continuous copper alloy bar casting device.1 is shell among the figure, and 2 is outer thermal insulation layer, and 3 is inner insulating layer, the 4th, and heat-insulation layer, 5 is liner, and 6 is interior thorax, and 7 is nozzle, 8 is liquid injection port, and 9 is loam cake, and 10 is ring flange, 11 is outer water collar, and 12 is graphite mould, and 13 is water ring, 14 is haulage gear, the 15th, and bar, 16 are the swing dolly, 17 is passage, and 18 is the handle hole sprue, and 19 is swing mechanism.

Fig. 2 is A-A cutaway view of Fig. 1.6 is interior thorax among the figure, and 18 is the handle hole sprue, and 20 is the sand material.

Fig. 3 is the diesel fuel heater structural representation.7 is nozzle among the figure, and 21 is hinged cantilever, and 22 for sending oil pipe, and 23 is fuel tap, and 24 is support arm, and 25 is air-valve, and 26 is air supplying hose, and 27 is ajutage, and 28 is underground fan house.

Embodiment 1 cast φ 50mm Cu-0.8% Cr chromiumcopper bar.

Liner is knotted into cylindric with red Cab-O-sil clay compound, thickness is 50mm; Inner chamber is thorax in the insulation bag, and interior thorax size: diameter is 250mm, and height is 300mm; Heat-insulation layer proportion is 1g/cm ³Light-weight refractory silica brick is built into, and thickness is 125mm; Inner insulating layer is built into diatomite brick, and thickness is 100mm, and it is real to be incubated cornerite portion plug with the diatomite fragment of brick; Outer thermal insulation layer is that thickness is the aluminosilicate fiberboard of 20mm; Shell is welded with the steel plate of 8mm; Interior thorax bottom is ramped shaped, tilts big outer toy trumpet shape in passage is to the passage that connects crystallizer; Handle hole is in insulation bag lower sidewall, and bottom the thorax, diameter was φ 150mm in its lower edge was lower than; Crystallizer is φ 51mm by endoporus, and wall thickness is that the cylinder graphite mould of 19mm is made with outer water collar interference fit; The nozzle of diesel fuel heater is supported on the liquid injection port top center by hinged cantilever, and jet down.

Use said apparatus operation as follows again:

(1) light the coke of inserting thorax in the insulation bag, internally thorax carries out preheating, and bore temperature rises to 800 ℃ in treating, coke is taken out by handle hole, and is with the handle hole sprue that handle hole sealing and back-up sand plug is real;

(2) crystallizer is installed on the passway by ring flange;

(3) light diesel fuel heater, with the internal thorax heating of diesel oil flame, bore temperature rises to 1100 ℃ in treating, the nozzle of diesel fuel heater is removed, and injects first batch of Cu-0.8%Cr liquation from liquid injection port.

(4) start swing mechanism, the Cu-0.8%Cr chromiumcopper bar of haulage gear cast φ 50mm; In the cast process, repeatedly inject Cu-0.8%Cr solution from liquid injection port, keep the flowability of alloy liquid in the insulation bag, guarantee cast bar uninterruptedly;

(5) before cast finishes, nozzle is moved to last batch of liquation in the liquid injection port top center heat tracing bag, the flowability of alloy liquid in the thorax in keeping is until the cast of alloy liquation is finished.

Embodiment 2 uses the ZQSn6-6-3 tin bronze bar of the said equipment cast φ 55mm.

(1) takes off crystallizer, the graphite mould endoporus is expanded to 56.1mm; Take off the handle hole sprue, interior thorax is cleaned out;

(2) light the coke of inserting thorax in the insulation bag, internally thorax carries out preheating, and bore temperature rises to 750 ℃ in treating, coke is taken out by handle hole, and is with the handle hole sprue that handle hole sealing and back-up sand plug is real;

(3) crystallizer is installed on the passway by ring flange;

(4) light diesel fuel heater, with the internal thorax heating of diesel oil flame, bore temperature rises to 1050 ℃ in treating, the nozzle of diesel fuel heater is removed, and injects first batch of ZQSn6-6-3 tin bronze liquation from liquid injection port;

(5) start swing mechanism, the ZQSn6-6-3 bar of haulage gear cast φ 55mm; In the cast process, repeatedly inject the ZQSn6-6-3 liquation from liquid injection port, keep the flowability of alloy liquid in the insulation bag, guarantee cast bar uninterruptedly;

(6) before cast finishes, nozzle is moved to thorax in the heating of liquid injection port top center, the flowability of alloy liquid in the thorax in keeping is until the cast of alloy liquation is finished.

The device of horizontal continuous copper alloy bar casting provided by the invention and process are applicable to the cast red copper bar.

Claims (3)

1, a kind of device of horizontal continuous copper alloy bar casting, comprise insulation bag and coupled crystallizer, it is characterized in that the insulation bag is made of the interior thorax [6] that from inside to outside sets gradually, liner [5], heat-insulation layer [4], inner insulating layer [3], outer thermal insulation layer [2], shell [1]; Interior thorax [6] bottom is ramped shaped, tilts to the passage [17] that connects crystallizer, big outer little perverse shape in passage [17] is; Handle hole is in insulation bag lower sidewall, and its lower edge is lower than interior thorax [6] bottom; Crystallizer is made by graphite mould [12] and outer water collar [11] interference fit; The nozzle of diesel fuel heater [7] by hinged cantilever [21] be supported on liquid injection port [8] top center and, and jet is down;

According to the described device of claim 1, it is characterized in that 2, liner [5] is knotted into cylindric with neutral refractory, thickness is 50mm～60mm: inner chamber is thorax [6] in the insulation bag, and its diameter is 250mm～400mm, and height is 300mm～500mm; Heat-insulation layer [4] is used proportion 0.8g/cm ³～1g/cm ³Light fire brick be built into, thickness is 120mm～130mm; Inner insulating layer [3] is built into diatomite brick, and thickness is 80mm～150mm, and it is real to be incubated cornerite portion plug with the diatomite fragment of brick; Outer thermal insulation layer [2] is that thickness is the aluminosilicate fiberboard of 20mm～30mm; Shell [1] is that 8mm～10mm steel plate is welded with thickness; The handle hole diameter is 120mm～180mm; The endoporus of the graphite mould of crystallizer [12] is regular polygon, the rectangle of φ 30mm～φ 150mm circle or corresponding sectional dimension;

3, use the technology of claim 1 or 2 described device cast copper alloy bars as follows:

(1) light the internal thorax of coke of inserting thorax in the insulation bag and carry out preheating, bore temperature rises to 700 ℃～800 ℃ in treating, coke is taken out by handle hole, and is with the handle hole sprue that handle hole sealing and back-up sand plug is real;

(2) crystallizer is installed on the passway by ring flange;

(3) light diesel fuel heater, with the internal thorax heating of diesel oil flame, bore temperature rises to 1000 ℃～1100 ℃ in treating, the nozzle of diesel fuel heater is removed, and injects first batch of molten alloyed copper from liquid injection port;

(4) start swing mechanism, haulage gear cast copper alloy bar;

(5) in the cast process, repeatedly add molten alloyed copper, keep the flowability of alloy liquid in the insulation bag, guarantee cast copper alloy bar uninterruptedly from liquid injection port;

(6) before finishing, cast adopts last batch of alloy liquid in the diesel fuel heater heat tracing bag, and the alloy liquid cast in the insulation bag is intact.

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