EP3311938A1 - Method for producing semi-finished metallurgical products and shaped castings, and device for carrying out said method - Google Patents
Method for producing semi-finished metallurgical products and shaped castings, and device for carrying out said method Download PDFInfo
- Publication number
- EP3311938A1 EP3311938A1 EP16807899.6A EP16807899A EP3311938A1 EP 3311938 A1 EP3311938 A1 EP 3311938A1 EP 16807899 A EP16807899 A EP 16807899A EP 3311938 A1 EP3311938 A1 EP 3311938A1
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- European Patent Office
- Prior art keywords
- mould
- autoclave
- melt
- furnace
- pouring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/007—Semi-solid pressure die casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/30—Accessories for supplying molten metal, e.g. in rations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/09—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure
- B22D27/13—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting by using pressure making use of gas pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/06—Heating or cooling equipment
Definitions
- the invention refers to the metallurgical and foundry industry and can be used for production of metals and alloys under gas pressure, in a vacuum, in atmospheric conditions and in special gaseous medium.
- a device is known [ Rasheva I.A., Petkanchin L.T., Pat. 2001/6887.23 August 2001 , Equipment for Production and Casting of Alloys, Republic of South Africa] for producing and casting of metals and alloys under gas pressure, in a vacuum and in atmospheric conditions or in special gaseous medium, which can produce monolithic (mono) ingots, remelted electrodes and casting of steels, alloyed with high nitrogen concentrations and easily evaporated elements, such as Cu, Pb, Mg, Zn and others.
- the equipment includes furnace and pouring autoclaves, airtight capsule with a feed pipe, which can be produced hermetically as an integral whole or as hermetically autonomous with a hermetic connection between them.
- the furnace autoclave there is an induction furnace and in the pouring autoclave - a set of moulds for mono-ingots, remelted electrodes or a casting form.
- the furnace and pouring autoclaves may have a common workspace and when necessary the autoclaves can be autonomously separated by means of two gastight gates.
- a hermetic capsule with a metallurgical or casting set moves vertically in the pouring autoclave and capsule can be with autonomous gas pressure (independent of the total work pressure in the pouring autoclave or in the common vessel under pressure, formed by the furnace and pouring autoclaves).
- the feed pipe is secured hermetically to the capsule.
- the upper and lower moving platforms are moving along horizontal rails, and the furnace and pouring autoclaves are moved vertically by elevators.
- the technical result aimed by the proposed method for producing, semi-finished metallurgical products and shaped castings and device for its implementation, consists in increasing the productivity, decreasing the power consumption and broadening the assortment of production.
- the technical result of implementing the method is achieved since the method of producing metallurgical products and shaped castings consists in filling the furnace autoclave with liquid or solid charge, which is melted and due to the pressure difference the melt is introduced through the feed pipe in the mould or form of the pouring autoclave and a replaceable device for intensive cooling of the melt is fixed between the feed pipe and the bottom tray of the mould, which is used for the local crystallization of the melt after filling the mould or form and the subsequent gas compaction. Water or other cooling agent can be introduced in the replaceable device for intensive cooling.
- At least one metallurgical product preliminarily placed in the mould, is heated before introducing the melt.
- the melt in the furnace autoclave is processed under gas, for example nitrogen, pressure.
- a device for producing metallurgical products and shaped castings consisting of a movable furnace autoclave and a pouring autoclave with at least one mould or form, connected by a corresponding feed pipe and a locking system, the bottom tray of the mould and the end of the feed pipe being produced with the possibility of connecting with a replaceable device for intensive cooling of the melt.
- the replaceable device for intensive cooling can include a high heat-conducting sleeve, encompassed by a high heat-conducting cooling sleeve.
- the bottom tray of the mould can be produced with the possibility for placing into a conical refractory sleeve, conjugated with a high heat-conducting sleeve and a high heat-conducting cooling sleeve.
- the quantity of the furnace and pouring autoclaves is determined by the production volume. The essence of the invention is explained by drawings.
- the device for producing metallurgical products and shaped castings consists of mobile, immobile and autonomous parts: a furnace autoclave 1 and a pouring autoclave 2, connected with a stationary shutoff device 3 with an incorporated gastight gate 4.
- the pouring autoclave 2 is disconnected by a gastight gate 5.
- the feed pipe 6 is fixed to the lower part of the bottom tray 7 of the mould 8.
- the pouring capsule 9 is moved vertically by the mechanism 10 and horizontally - together with the pouring autoclave 2 on a carriage 11.
- the casting of ingots (slabs, shaped castings) of the type of bimetallic and three-layered ingots of two or three alloy grades as well as conventional ingots, is carried out.
- the furnace autoclave 1 together with the induction furnace 12 is moved vertically by the elevator 13 to the bayonet stationary shutoff device 3 and it is moved horizontally by the carriage 14.
- the stationary shutoff device 3 connects to the furnace autoclave 1 and the pouring autoclave 2 and the carriages 11 and 14 move along the rails 15 and 16.
- the castings of the pouring autoclaves and the capsule 9 can be low and high (in the case of bimetallic and three-layered ingots-slabs).
- Both autoclaves 1 and 2 can have common workspace but can also be with autonomous atmosphere.
- the capsule 9 in the pouring autoclave 2 moves vertically with the casting form or with the pouring set for the mono-ingot, bimetallic ingot, ingot of three different metal layers or ingot of three layers of two alloys.
- the capsule 9 is also produced in hermetic version with autonomous gas medium and has a heater(s) 18 to heat the internal surface of the ingot (slab) 19 immediately before filling the mould 8.
- a heater(s) 18 to heat the internal surface of the ingot (slab) 19 immediately before filling the mould 8.
- a high heat-conducting sleeve 20 is installed in contact with a copper water-cooled sleeve 21.
- the feed pipe 6 is fixed hermetically below them at the bottom tray 7.
- the furnace autoclave 1 consists of a casing 22, a cover 23, coupled with a bayonet connection 24.
- the pouring autoclave 2 consists of a casing with a lower part 25 and an upper part 26, coupled with a bayonet connection 27.
- the capsule 9 has a lower part 28 and an upper part 29, coupled with a bayonet connection 30.
- the device for intensive cooling of the melt in addition to above mentioned sleeves 20 and 21 contains plastic sealing coating 31, flow sensor for water (cooling agent) and an automatic tap at the control panel, which turns on maximum water cooling flow (cooling agent) immediately after the signal for filling the mould 8, but also taking into account the time for pressing the liquid metal for a dense seam with the ingot (slab) 19 and decreasing the shrinkage sink of the newly casted ingot.
- a replaceable refractory conical sleeve 32 ("stone") is placed in the bottom tray 7.
- a slab (semi-ingot) 19 is firmly fixed and occupies part of the workspace of the mould 8.
- the heater 18 is lowered by a manipulator in the free half-space of the mould 8 and it is used for heating of the internal surface of the ingot (slab) 19. After reaching the set temperature (different for the different metals and alloys) the heater 18 is lifted and the liquid metal 33 is introduced for the formation of the second part of the bimetallic or the third part of the three-metallic alloy.
- An upper gastight gate 5 is installed in the bottom of the pouring autoclave 2.
- a lower gastight gate 4 is installed in the stationary shutoff device 3, connecting the autoclaves 1 and 2.
- the induction furnace 12 is stationary installed in the casing 22 of the furnace autoclave 1, which is mounted by trunnions 34 on a moving carriage 14.
- the induction furnace 12 When the operation is based on solid charge, the induction furnace 12 is filled with solid charge, which is melted and processed under atmospheric conditions.
- the pouring autoclave 2 is prepared for melting at the device itself or on the rail road 16.
- the "stone" (conical sleeve) 32 At the lower surface ( Fig. 2 ) of the bottom tray 7 the "stone" (conical sleeve) 32 is installed, which is in contact with the high heat-conducting sleeve 20 (covered with the plastic coating 31) and the high heat-conducting cooling copper sleeve 21 is laid and then the feed pipe 6 is installed.
- the copper sleeve 21 is connected at the control panel with two sensors with thermocouples, inserted in the lid of the mould 8 for recording the metal casting process.
- the slab (part of ingot) 19 is installed and firmly fixed in the mould 8 and the heater 18 is lowered next to it. After heating to the set temperature of the internal surface of the slab 19, the heater 18 is lifted and after it the gas-permeable lid 35 is placed, the lid 29 of the capsule 9 is fixed by the bayonet connection 27. The upper part 26 of the pouring autoclave 2 is placed on the lower part 25 and is fixed by the bayonet connection 27.
- the induction furnace 12 moves along a rail road 15 by means of the carriage 14 and is centered under the pouring autoclave 2, lifted by the elevators 36 until it stops at the stationary shutoff device 3 and is fixed by the bayonet connection 24.
- the liquid alloy 33 is processed under gas pressure and then the capsule 9 is lowered in a controlled manner until the lower end of the feed pipe 6 is submerged in the liquid metal.
- the most intensive water cooling flow (cooling agent) is turned on and local crystallization of the liquid metal takes place in the unit (device) by controlled crystallization ( Fig. 2 ).
- the gastight gate 5 is closed.
- the pressure P2 becomes higher than the pressure P3 and the pressure of the gas P1 in the furnace autoclave 1 is decreased to the atmospheric pressure.
- the bayonet connection 24 is opened, the furnace autoclave 1 is lowered to the end lower position by the elevators 36, the furnace autoclave 1 is moved to the end left position and the induction furnace 12 is prepared for the charge of the next melting.
- the induction furnace 12 When operated with liquid charge, the induction furnace 12 receives liquid charge and the furnace autoclave 1 is moved and centered under the pouring autoclave 2.
- the sequence of the other operations is analogous to the variant with the operations with solid charge.
- the induction furnace 12 is heated to the temperature 1580-1600°C.
- the pressure P1 in the furnace autoclave 1 and P2, P3 respectively in the pouring autoclave 2 and the capsule 9 is equalized in the course of 20s.
- High-nitrogen ferrochromium is introduced after the pressure equalization, which is absorbed in the course of 10 min.
- the feed pipe 6 is filled in the course of 6 s, the differential pressure is increased to 0.25 MPa and the mould 8 is filled with a melt, which is solidified, for example, after 10 min. Then the ingot is compacted for about 6 min, the device for intensive cooling is turned on and after 2 min the casting become completed.
- the pressure P3 above the ingot in the capsule 9 is kept on the level of 0.45 MPa for 2 min. Then in the course of 15 s the pressure P1 in the furnace autoclave 1 become reduced and the device 1 is moved to be charged for new melting.
Abstract
Description
- The invention refers to the metallurgical and foundry industry and can be used for production of metals and alloys under gas pressure, in a vacuum, in atmospheric conditions and in special gaseous medium.
- A device is known [
Rasheva I.A., Petkanchin L.T., Pat. 2001/6887.23 August 2001 - The shortcomings of this known device are:
- low productivity, since the ceramic feed pipe have low heat conductivity and hence a waiting period is necessary until the liquid metal (melt) in it is crystallized and the two autoclaves have to be disconnected in order to start the next melting;
- limited assortment, excluding the possibility of producing two- and three-layered ingots and castings;
- increased consumption of electric power, water, refractory and other expendable materials, since the induction furnace continues its operation after filling the mould (form);
- lower effectiveness of liquid charge application since the crystallization in the pouring chamber restricts all production processes;
- replacement of the expensive feed systems after each melting, since a solid alloy plug is formed in the refractory pipe.
- The technical result, aimed by the proposed method for producing, semi-finished metallurgical products and shaped castings and device for its implementation, consists in increasing the productivity, decreasing the power consumption and broadening the assortment of production.
- The technical result of implementing the method is achieved since the method of producing metallurgical products and shaped castings consists in filling the furnace autoclave with liquid or solid charge, which is melted and due to the pressure difference the melt is introduced through the feed pipe in the mould or form of the pouring autoclave and a replaceable device for intensive cooling of the melt is fixed between the feed pipe and the bottom tray of the mould, which is used for the local crystallization of the melt after filling the mould or form and the subsequent gas compaction. Water or other cooling agent can be introduced in the replaceable device for intensive cooling.
- When producing multilayered alloys, at least one metallurgical product, preliminarily placed in the mould, is heated before introducing the melt.
- To obtain metallurgical products and shaped castings with various properties, the melt in the furnace autoclave is processed under gas, for example nitrogen, pressure.
- The technical result in the device implementation is reached in a device for producing metallurgical products and shaped castings, consisting of a movable furnace autoclave and a pouring autoclave with at least one mould or form, connected by a corresponding feed pipe and a locking system, the bottom tray of the mould and the end of the feed pipe being produced with the possibility of connecting with a replaceable device for intensive cooling of the melt.
- The replaceable device for intensive cooling can include a high heat-conducting sleeve, encompassed by a high heat-conducting cooling sleeve.
- The bottom tray of the mould can be produced with the possibility for placing into a conical refractory sleeve, conjugated with a high heat-conducting sleeve and a high heat-conducting cooling sleeve.
- In the pouring autoclave for manufacturing multilayered alloys with the possibility of displacement there is a heater placed in the mould of the metallurgical blank and a gas-permeable lid covering the mould.
- The quantity of the furnace and pouring autoclaves is determined by the production volume.
The essence of the invention is explained by drawings. -
Fig. 1 - a general outlook of the device of producing metallurgical products and shaped castings; -
Fig. 2 - a replaceable device for intensive cooling of the melt; -
Fig. 3 - a scheme for producing a bimetallic ingot; -
Fig. 4 - a scheme for producing a three-layered ingot; -
Fig. 5 - a scheme for producing a bimetallic slab. - The device for producing metallurgical products and shaped castings consists of mobile, immobile and autonomous parts: a
furnace autoclave 1 and a pouring autoclave 2, connected with astationary shutoff device 3 with an incorporatedgastight gate 4. The pouring autoclave 2 is disconnected by a gastight gate 5. Thefeed pipe 6 is fixed to the lower part of thebottom tray 7 of themould 8. The pouring capsule 9 is moved vertically by themechanism 10 and horizontally - together with the pouring autoclave 2 on acarriage 11. - In the capsule 9 at "high mode" anti-gravitationally the casting of ingots (slabs, shaped castings) of the type of bimetallic and three-layered ingots of two or three alloy grades as well as conventional ingots, is carried out. The
furnace autoclave 1 together with theinduction furnace 12 is moved vertically by theelevator 13 to the bayonetstationary shutoff device 3 and it is moved horizontally by the carriage 14. Thestationary shutoff device 3 connects to thefurnace autoclave 1 and the pouring autoclave 2 and thecarriages 11 and 14 move along therails - There is an
induction furnace 12 in thefurnace autoclave 1 and in the pouring autoclave 2 - a set ofmoulds 8 for ingots (casting forms), used for producing mono-ingots, remelted electrodes, shaped castings, two- or three-layered ingots and castings. The castings of the pouring autoclaves and the capsule 9 can be low and high (in the case of bimetallic and three-layered ingots-slabs). Bothautoclaves 1 and 2 can have common workspace but can also be with autonomous atmosphere. The capsule 9 in the pouring autoclave 2 moves vertically with the casting form or with the pouring set for the mono-ingot, bimetallic ingot, ingot of three different metal layers or ingot of three layers of two alloys. The capsule 9 is also produced in hermetic version with autonomous gas medium and has a heater(s) 18 to heat the internal surface of the ingot (slab) 19 immediately before filling themould 8. At the bottom of the capsule (in the tray) 7 a high heat-conductingsleeve 20 is installed in contact with a copper water-cooled sleeve 21. Thefeed pipe 6 is fixed hermetically below them at thebottom tray 7. - The
furnace autoclave 1 consists of acasing 22, acover 23, coupled with abayonet connection 24. The pouring autoclave 2 consists of a casing with alower part 25 and anupper part 26, coupled with abayonet connection 27. The capsule 9 has alower part 28 and anupper part 29, coupled with abayonet connection 30. - The device for intensive cooling of the melt in addition to above mentioned
sleeves 20 and 21 containsplastic sealing coating 31, flow sensor for water (cooling agent) and an automatic tap at the control panel, which turns on maximum water cooling flow (cooling agent) immediately after the signal for filling themould 8, but also taking into account the time for pressing the liquid metal for a dense seam with the ingot (slab) 19 and decreasing the shrinkage sink of the newly casted ingot. - A replaceable refractory conical sleeve 32 ("stone") is placed in the
bottom tray 7. - When producing alloys in the mould 8 a slab (semi-ingot) 19 is firmly fixed and occupies part of the workspace of the
mould 8. Theheater 18 is lowered by a manipulator in the free half-space of themould 8 and it is used for heating of the internal surface of the ingot (slab) 19. After reaching the set temperature (different for the different metals and alloys) theheater 18 is lifted and theliquid metal 33 is introduced for the formation of the second part of the bimetallic or the third part of the three-metallic alloy. - An upper gastight gate 5 is installed in the bottom of the pouring autoclave 2. A
lower gastight gate 4 is installed in thestationary shutoff device 3, connecting theautoclaves 1 and 2. Theinduction furnace 12 is stationary installed in thecasing 22 of thefurnace autoclave 1, which is mounted bytrunnions 34 on a moving carriage 14. - In case of the production of a three-layered ingot (slab) (
Fig. 4 ) the sequence of operation is analogous to the production of bimetallic ingot(s). - When the operation is based on solid charge, the
induction furnace 12 is filled with solid charge, which is melted and processed under atmospheric conditions. The pouring autoclave 2 is prepared for melting at the device itself or on therail road 16. At the lower surface (Fig. 2 ) of the bottom tray 7 the "stone" (conical sleeve) 32 is installed, which is in contact with the high heat-conducting sleeve 20 (covered with the plastic coating 31) and the high heat-conducting cooling copper sleeve 21 is laid and then thefeed pipe 6 is installed. The copper sleeve 21 is connected at the control panel with two sensors with thermocouples, inserted in the lid of themould 8 for recording the metal casting process. Then the slab (part of ingot) 19 is installed and firmly fixed in themould 8 and theheater 18 is lowered next to it. After heating to the set temperature of the internal surface of theslab 19, theheater 18 is lifted and after it the gas-permeable lid 35 is placed, thelid 29 of the capsule 9 is fixed by thebayonet connection 27. Theupper part 26 of the pouring autoclave 2 is placed on thelower part 25 and is fixed by thebayonet connection 27. - The
induction furnace 12 moves along arail road 15 by means of the carriage 14 and is centered under the pouring autoclave 2, lifted by theelevators 36 until it stops at thestationary shutoff device 3 and is fixed by thebayonet connection 24. Theliquid alloy 33 is processed under gas pressure and then the capsule 9 is lowered in a controlled manner until the lower end of thefeed pipe 6 is submerged in the liquid metal. In this way conditions for transportation are created - pressure difference (ΔP=P2-P1) in the common workspace of thefurnace autoclave 1 and the pouring autoclave 2, and the liquid metal starts to flow anti-gravitationally through thefeed pipe 6 into themould 8. After filling the free volume of the mould 8 (Fig. 3 ), the most intensive water cooling flow (cooling agent) is turned on and local crystallization of the liquid metal takes place in the unit (device) by controlled crystallization (Fig. 2 ). After the local crystallization in the zone of thesleeve 20 the gastight gate 5 is closed. The pressure P2 becomes higher than the pressure P3 and the pressure of the gas P1 in thefurnace autoclave 1 is decreased to the atmospheric pressure. Thebayonet connection 24 is opened, thefurnace autoclave 1 is lowered to the end lower position by theelevators 36, thefurnace autoclave 1 is moved to the end left position and theinduction furnace 12 is prepared for the charge of the next melting. - When operated with liquid charge, the
induction furnace 12 receives liquid charge and thefurnace autoclave 1 is moved and centered under the pouring autoclave 2. The sequence of the other operations is analogous to the variant with the operations with solid charge. - The operation of the device implements the method for producing metallurgical products and shaped castings and the following ingots are obtained:
- The
induction furnace 12 is heated to the temperature 1580-1600°C. The pressure P1 in thefurnace autoclave 1 and P2, P3 respectively in the pouring autoclave 2 and the capsule 9 is equalized in the course of 20s. High-nitrogen ferrochromium is introduced after the pressure equalization, which is absorbed in the course of 10 min. In the capsule 9 negative differential pressure is formed ΔP=P1-P3=0.05 MPa. - The
feed pipe 6 is filled in the course of 6 s, the differential pressure is increased to 0.25 MPa and themould 8 is filled with a melt, which is solidified, for example, after 10 min. Then the ingot is compacted for about 6 min, the device for intensive cooling is turned on and after 2 min the casting become completed. The pressure P3 above the ingot in the capsule 9 is kept on the level of 0.45 MPa for 2 min. Then in the course of 15 s the pressure P1 in thefurnace autoclave 1 become reduced and thedevice 1 is moved to be charged for new melting. - The operations proceed as in
paragraph 1, but themould 8 is different - asolid alloy semi-ingot 19 is placed in it earlier and heated to 100-150°C by theheater 18. - The operations proceed as in paragraph 2, but in the
mould 8 twosemi-ingots 19 are placed. - The operations proceed as in
paragraph 1 but thesolid semi-ingot 19 have parallelepiped formation. The device and method have the following advantages: - the device for intensive controlled cooling out of the section of the feed channel out of the feed
ceramic pipe 6 allows to decrease the time for pouring and to increase the productivity of the equipment; - the device for intensive controlled cooling is situated outside of the
feed pipe 6, which increases the service life in tens of times; - the possibility is ensured for multiple application of the expensive feed system;
- wider assortment of production, including high tech production of bi- and tri-metals welded in a metallurgical way;
- decreased consumption of electric power, water, materials, etc. due to the shorter melting time;
- higher effectiveness of the operation with liquid charge, which is the basis for higher competitiveness of the whole production process;
- decreasing the time of the harmful effect of the high-temperature mirror of the liquid melt (1600-1700°C, irradiation, dust, gases) on the polished cylinders and polished guide columns of the elevation mechanism;
- substantial reduction for the risk of industrial accidents due to the longer service interval of the feed system;
- the device allows melting under pressure and atmospheric conditions and, including, in vacuum;
- the method for producing metallurgical products and shaped castings and the device for its implementation can be used for the production and casting of metals and alloys under gas pressure, in vacuum or in atmospheric conditions , as well as in special gas medium, to obtain conventional (mono) ingots (slabs), monometallic, bimetallic, three-layered with two or three grades of metals or alloys, remelted electrodes; shaped castings, conventional, nitrogen (NS), high nitrogen (HNS) steels, alloyed with easily evaporated elements like calcium, lead, zinc, magnesium, manganese, etc., as well as non-ferrous metals and alloys.
Claims (11)
- A method for producing semi-finished metallurgical products and shaped castings, according to which the furnace autoclave is filled with liquid charge or solid melting charge that is introduced due to the pressure difference through a feed pipe into the mould or into the form of the pouring autoclave, wherein, before introducing the melt through the feed pipe, between it and the bottom tray of the mould or form, a replaceable device for intensive cooling of the melt is placed, which is used after filling the mould or form with the melt and the subsequent gas compaction for local crystallization of the melt.
- A method, according to claim 1, wherein water or other cooling agent introduced in the replaceable device for intensive cooling of the melt.
- A method, according to claim 1 or 2, wherein
at least one preliminary placed in the mould or form metallurgical blank is heated before introducing the melt. - A method, according to claim 1 or 2, wherein the melt is processed in the furnace autoclave under gas pressure.
- A method, according to claim 4, wherein nitrogen is used.
- A method, according to claim 3, wherein the melt is processed in the furnace autoclave under gas pressure.
- A method, according to claim 6, wherein nitrogen is used.
- A device for producing semi-finished metallurgical products and shaped castings, consisting of a removable furnace autoclave and a pouring autoclave with at least one mould or form, connected with a respective feed pipe or locking system, wherein the mould bottom tray and the end of the feed pipe allow the possibility of coupling with a replaceable device for intensive cooling of the melt.
- A device, according to claim 8, wherein device for intensive cooling of the melt is replaceable, which includes a high heat-conducting sleeve, encompassed by a high heat-conducting cooling sleeve.
- A device, according to claim 9, wherein a bottom tray of the mould or form allow the possibility for inserting in it a replaceable conical refractory sleeve, connected with a high heat-conducting sleeve and a high heat-conducting cooling sleeve.
- A device, according to any of claims 8-10, wherein the pouring autoclave have the possibility of displacement with a heater which is positioned in the mould or form of the metallurgical blank and a gas-permeable lid covering the mould or form.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2015122307/12A RU2573283C1 (en) | 2015-06-11 | 2015-06-11 | Method of producing of metallurgical blanks, shaped castings, and device for its implementation |
PCT/RU2016/000218 WO2016200289A1 (en) | 2015-06-11 | 2016-04-15 | Method for producing semi-finished metallurgical products and shaped castings, and device for carrying out said method |
Publications (2)
Publication Number | Publication Date |
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EP3311938A1 true EP3311938A1 (en) | 2018-04-25 |
EP3311938A4 EP3311938A4 (en) | 2018-12-05 |
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ID=55087140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP16807899.6A Withdrawn EP3311938A4 (en) | 2015-06-11 | 2016-04-15 | Method for producing semi-finished metallurgical products and shaped castings, and device for carrying out said method |
Country Status (11)
Country | Link |
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US (1) | US20180161863A1 (en) |
EP (1) | EP3311938A4 (en) |
JP (1) | JP2018520886A (en) |
KR (1) | KR20180018588A (en) |
CN (1) | CN107635697A (en) |
AU (1) | AU2016277194A1 (en) |
CA (1) | CA2988704A1 (en) |
EA (1) | EA037177B1 (en) |
RU (1) | RU2573283C1 (en) |
WO (1) | WO2016200289A1 (en) |
ZA (1) | ZA201708660B (en) |
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DE2646187A1 (en) * | 1976-10-13 | 1978-04-20 | Ture Arvid Bertland | Low pressure casting of steel in moulds - where stand pipe contains sliding stopper which chills metal in ingate (SW 8.11.76) |
SU1042881A1 (en) * | 1982-05-21 | 1983-09-23 | Предприятие П/Я Г-4967 | Apparatus for low pressure die casting |
SE452860B (en) * | 1984-08-29 | 1987-12-21 | Inst Po Metalloznanie I Tekno | SET TO PROCESS AND CAST METALS IN A CLOSED SPACE AND DEVICE FOR IMPLEMENTATION OF THE SET |
SU1482751A1 (en) * | 1987-07-07 | 1989-05-30 | Сибирский металлургический институт им.Серго Орджоникидзе | Method of producing castings |
JPS6433356U (en) * | 1987-08-19 | 1989-03-01 | ||
JP2634842B2 (en) * | 1988-03-18 | 1997-07-30 | 本田技研工業株式会社 | Low pressure casting and casting mold |
CZ285517B6 (en) * | 1990-01-31 | 1999-08-11 | Zimmermann Und Jansen Gmbh | Mechanism for controlled transfer of field flume or metallurgical pouring ladle stopper |
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RU2138557C1 (en) * | 1998-06-26 | 1999-09-27 | Селиванов Вадим Николаевич | Method for manufacture of cast iron, steel, blanks and articles produced from cast iron and steel by agglomeration, blast furnace, steel-making and rolling processes in metallurgical plant |
ZA200106887B (en) * | 2001-08-21 | 2002-02-07 | High Nitrogen Steel Pty Ltd | Equipment for production and casting of alloys. |
CA2546742A1 (en) * | 2003-11-26 | 2005-06-09 | Marie Thomas Gilles Raffle | Casting of metal artefacts |
US7484548B2 (en) * | 2004-11-16 | 2009-02-03 | Rmi Titanium Company | Continuous casting of reactionary metals using a glass covering |
US7377304B2 (en) * | 2005-07-12 | 2008-05-27 | Alcoa Inc. | Method of unidirectional solidification of castings and associated apparatus |
JP5319893B2 (en) * | 2007-03-06 | 2013-10-16 | アイ・イー・ソリューション株式会社 | High vacuum suction casting equipment |
-
2015
- 2015-06-11 RU RU2015122307/12A patent/RU2573283C1/en active
-
2016
- 2016-04-15 AU AU2016277194A patent/AU2016277194A1/en not_active Abandoned
- 2016-04-15 CA CA2988704A patent/CA2988704A1/en not_active Abandoned
- 2016-04-15 CN CN201680034124.9A patent/CN107635697A/en active Pending
- 2016-04-15 KR KR1020177037518A patent/KR20180018588A/en not_active Application Discontinuation
- 2016-04-15 EA EA201700559A patent/EA037177B1/en not_active IP Right Cessation
- 2016-04-15 EP EP16807899.6A patent/EP3311938A4/en not_active Withdrawn
- 2016-04-15 US US15/735,291 patent/US20180161863A1/en not_active Abandoned
- 2016-04-15 JP JP2018517120A patent/JP2018520886A/en active Pending
- 2016-04-15 WO PCT/RU2016/000218 patent/WO2016200289A1/en active Application Filing
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2017
- 2017-12-19 ZA ZA2017/08660A patent/ZA201708660B/en unknown
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EA201700559A1 (en) | 2018-04-30 |
AU2016277194A1 (en) | 2018-01-04 |
EA037177B1 (en) | 2021-02-15 |
US20180161863A1 (en) | 2018-06-14 |
CA2988704A1 (en) | 2016-12-15 |
KR20180018588A (en) | 2018-02-21 |
EP3311938A4 (en) | 2018-12-05 |
CN107635697A (en) | 2018-01-26 |
ZA201708660B (en) | 2018-12-19 |
WO2016200289A1 (en) | 2016-12-15 |
RU2573283C1 (en) | 2016-01-20 |
JP2018520886A (en) | 2018-08-02 |
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