US3721286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of obtaining metal hollow ingots by the elastroslag remelting
Assignee: Individual
•
Filing: 1971-03-29
•
Granted: 1973-03-20
•
Expires: 1991-03-29
Abstract
Abstract A method for electroslag remelting of at least one consumable electrode in a cooled mold assembly with a cooled bottom plate in which at least a part of the mold assembly is moved relative to the ingot being formed during forming of the ingot, and a device by which the method can be practiced. Movement of selective parts of the mold assembly relative to the ingot and/or the electrode is provided with or without movement of the electrodes itself. Bottom pouring of molten slag is provided. A specific mold assembly has, as an element, a cooled core device enabling making hollow ingots, in which case the hollow core device can be moved axially, reciprocated axially and reciprocally rotated during forming of the ingot. Electrical power for the electroslag remelting can be connected between the consumable electrode and any or all elements of the mold assembly.
Inventors
- 👤 V Artamonov
- 👤 R Garkaljuk
- 👤 V Timchenko
- 👤 E Malichekno
- 👤 L Stopak
- 👤 R Dubinsky
- 👤 B Izrailevich
- 👤 J Latash
- 👤 L Chekotilo
- 👤 V Baglai
- 👤 B Paton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:45
CPC Classifications
B; B22; B22D; B22D23/00; B22D23/06; B22D23/10; C; C22; C22B; C22B9/00; C22B9/16; C22B9/18
Claims Analysis
Total Claims: 89
Claim 1
Independent Claim
142 words
A method of manufacturing hollow metal ingots by the electroslag remelting of a consumable electrode in a cooled mold having disposed therein a cooled core terminating in an upwardly directed end face forming the internal cavity of an ingot to be fOrmed in said mold, said ingot being secured on a bottom plate, comprising forming a molten slag bath in said mold, immersing the lower end of said consumable electrode and the upper end face of said core in the molten slag bath, connecting said consumable electrode, core and bottom plate to a current source, providing relative movement in the axial direction between said core and said bottom plate with the ingot secured to said bottom plate in such a manner that the upper end face of said core is constantly immersed in the molten slag bath in said mold during remelting.
Claim 2
Independent Claim
142 words
A method of manufacturing hollow metal ingots by the electroslag remelting of a consumable electrode in a cooled mold having disposed therein a cooled core terminating in an upwardly directed end face forming the internal cavity of an ingot to be fOrmed in said mold, said ingot being secured on a bottom plate, comprising forming a molten slag bath in said mold, immersing the lower end of said consumable electrode and the upper end face of said core in the molten slag bath, connecting said consumable electrode, core and bottom plate to a current source, providing relative movement in the axial direction between said core and said bottom plate with the ingot secured to said bottom plate in such a manner that the upper end face of said core is constantly immersed in the molten slag bath in said mold during remelting.
Claim 3
Dependent Claim
29 words
A method as claimed in claim 1, wherein the core is moved upwardly in relation to the stationary mold and bottom plate having the ingot being formed secured thereon.
Claim 4
Dependent Claim
31 words
A method as claimed in claim 1, wherein the bottom plate together with the ingot being formed and secured thereon is moved downwardly in relation to the core and stationary mold.
Claim 5
Dependent Claim
30 words
A method as claimed in claim 1, wherein the mold together with the bottom plate and the ingot being formed secured thereon are moved downwardly in relation to the core.
Claim 6
Dependent Claim
20 words
A method as claimed in claim 1, wherein a rocking motion in the axial direction is imparted to the core.
Claim 7
Dependent Claim
16 words
A method as claimed in claim 1, wherein reciprocal rotary motion is imparted to said core.
Claim 8
Independent Claim
158 words
A method of electroslag remelting of at least one consumable electrode in a mold having a remelting zone defined by the lower portion of the mold and having a bottom plate, and a cooled core terminating in an upper end face disposed in the mold to form an internal cavity in the ingot being built-up by the remelting of the consumable electrode, comprising the steps of connecting the consumable electrode, the bottom plate and said cooled core to a source of electrical power, bottom pouring a predetermined quantity of molten slag into said remelting zone, contacting the lower end of the consumable electrode with the molten slag, controlling the axial movement of the mold during remelting, and controlling the axial movement of the consumable electrode during remelting, the axial movement of the mold being controlled in such a manner that the upper face of the cooled core is constantly in contact with the molten slag in the mold.
Claim 9
Independent Claim
158 words
A method of electroslag remelting of at least one consumable electrode in a mold having a remelting zone defined by the lower portion of the mold and having a bottom plate, and a cooled core terminating in an upper end face disposed in the mold to form an internal cavity in the ingot being built-up by the remelting of the consumable electrode, comprising the steps of connecting the consumable electrode, the bottom plate and said cooled core to a source of electrical power, bottom pouring a predetermined quantity of molten slag into said remelting zone, contacting the lower end of the consumable electrode with the molten slag, controlling the axial movement of the mold during remelting, and controlling the axial movement of the consumable electrode during remelting, the axial movement of the mold being controlled in such a manner that the upper face of the cooled core is constantly in contact with the molten slag in the mold.
Claim 10
Dependent Claim
35 words
A method as defined in claim 7, wherein said electrode is moved axially with respect to said mold during remelting and wherein said cooled core is moved axially with respect to said mold during remelting.
Claim 11
Independent Claim
177 words
A method of electroslag remelting of at least one consumable electrode in a mold having a remelting zone defined by the lower portion of the mold and having a bottom plate, and a cooled core terminating in an upwardly directed end face disposed in the mold to form an internal cavity in the ingot being built-up by the remelting of the consumable electrode, comprising the steps of connecting the consumable electrode, the bottom plate and said cooled core to a source of electrical power, bottom pouring a predetermined quantity of molten slag into said remelting zone, contacting the lower end of the consumable electrode with the molten slag, controlling the axial movement of the mold during remelting, maintaining the consumable electrode in fixed axial position with respect to the mold during remelting, and moving the cooled core axially with respect to the mold during the remelting, the axial movement of the mold being controlled in such a manner that the upper face of the cooled core is constantly in contact with the molten slag in the mold.
Claim 12
Independent Claim
177 words
A method of electroslag remelting of at least one consumable electrode in a mold having a remelting zone defined by the lower portion of the mold and having a bottom plate, and a cooled core terminating in an upwardly directed end face disposed in the mold to form an internal cavity in the ingot being built-up by the remelting of the consumable electrode, comprising the steps of connecting the consumable electrode, the bottom plate and said cooled core to a source of electrical power, bottom pouring a predetermined quantity of molten slag into said remelting zone, contacting the lower end of the consumable electrode with the molten slag, controlling the axial movement of the mold during remelting, maintaining the consumable electrode in fixed axial position with respect to the mold during remelting, and moving the cooled core axially with respect to the mold during the remelting, the axial movement of the mold being controlled in such a manner that the upper face of the cooled core is constantly in contact with the molten slag in the mold.
Claim 13
Independent Claim
96 words
A method of electroslag melting of metal in a molten slag bath maintained in a mold, wherein the mold is provided with a core member terminating in an upper free end, at least a portion of the free end being positioned within the molten slag for causing a hollow ingot to be produced, comprising the steps of bottom pouring molten slag into the mold to start the melting, and providing relative movement between the ingot being formed and the core member along the hollow portion of the ingot being formed during The melting of the metal.
Claim 14
Independent Claim
96 words
A method of electroslag melting of metal in a molten slag bath maintained in a mold, wherein the mold is provided with a core member terminating in an upper free end, at least a portion of the free end being positioned within the molten slag for causing a hollow ingot to be produced, comprising the steps of bottom pouring molten slag into the mold to start the melting, and providing relative movement between the ingot being formed and the core member along the hollow portion of the ingot being formed during The melting of the metal.
Claim 15
Dependent Claim
23 words
A method as defined by claim 10, wherein at least one consumable electrode is moved axially into the molten slag bath during melting.
Claim 16
Dependent Claim
22 words
A method as defined by claim 11, wherein the movements of the mold and the consumable electrode are in the same direction.
Claim 17
Dependent Claim
27 words
A method as defined by claim 10, wherein a bottom plate is provided for the mold and wherein the mold and the bottom plate are fluid cooled.
Claim 18
Dependent Claim
23 words
A method as defined by claim 11, wherein a source of electric power is connected to the consumable electrode and to the mold.
Claim 19
Dependent Claim
44 words
A method as defined by claim 14, wherein a bottom plate is provided for the mold and wherein the source of electric power is also connected to the bottom plate and wherein the mold and the bottom plate are at a common electrical potential.
Claim 20
Dependent Claim
13 words
A method as defined by claim 14, wherein the electric power is A.C.
Claim 21
Dependent Claim
13 words
A method as defined by claim 14, wherein the electric power is D.C.
Claim 22
Dependent Claim
54 words
A method as defined by claim 10, wherein a bottom plate is provided for the mold and wherein movement of the core member relative to the bottom plate is controlled in a fashion to maintain at least a portion of the upper face of the core member in constant contact with the molten slag.
Claim 23
Dependent Claim
14 words
A method as defined by claim 10, wherein the core member is fluid cooled.
Claim 24
Dependent Claim
21 words
A method as defined by claim 10, wherein the core member is reciprocated axially within the hollow ingot during its formation.
Claim 25
Dependent Claim
21 words
A method as defined by claim 10, wherein the core member is rotated reciprocally within the hollow ingot during its formation.
Claim 26
Dependent Claim
65 words
A method as defined by claim 10, wherein a consumable electrode is melted in the slat bath and wherein a source of electric power is connected to the consumable electrode, the mold, and the core member and wherein the mold and the core member are at a common electrical potential to provide a common potential for the core member and the hollow ingot being formed.
Claim 27
Dependent Claim
30 words
A method as defined by claim 22, wherein a bottom plate is provided for the mold and wherein the bottom plate has the same electrical potential as the core member.
Claim 28
Dependent Claim
13 words
A method as defined in claim 22, wherein the electrical power is A.C.
Claim 29
Dependent Claim
13 words
A method as defined in claim 22, wherein the electrical power is D.C.
Claim 30
Dependent Claim
17 words
A method as defined by claim 10, wherein the core member is axially aligned with the mold.
Claim 31
Dependent Claim
28 words
A method as defined by claim 10, wherein a bottom plate is provided for the mold and wherein the mold, bottom plate, and core member are fluid cooled.
Claim 32
Dependent Claim
26 words
A method as defined by claim 10, wherein the core member is reciprocated axially and is simultaneously rotated reciprocally within the hollow ingot during its formation.
Claim 33
Dependent Claim
38 words
A method as defined by claim 10, wherein a bottom plate is provided for the mold and wherein the bottom plate and the mold are maintained in contact with each other and are moved in the same direction.
Claim 34
Dependent Claim
27 words
A method as defined in claim 10, wherein a bottom plate is provided for the mold and the mold is moved axially relative to the bottom plate.
Claim 35
Dependent Claim
36 words
A method as defined by claim 30, wherein the bottom plate is held in fixed position and the movement of the mold relative to the bottom plate is in a direction away from the bottom plate.
Claim 36
Dependent Claim
23 words
A method as defined by claim 30, wherein at least one consumable electrode is axially moved into the molten slag bath during melting.
Claim 37
Dependent Claim
24 words
A method as defined by claim 30, wherein the mold is held in fixed position and the bottom plate is moved axially away therefrom.
Claim 38
Dependent Claim
23 words
A method as defined by claim 32, wherein a source of electric power is connected to the consumable electrode and to the mold.
Claim 39
Dependent Claim
34 words
A method as defined by claim 34, wherein the source of electric power is also connected to the bottom plate and wherein the mold and the bottom plate are at a common electrical potential.
Claim 40
Dependent Claim
13 words
A method as defined by claim 34, wherein the electric power is A.C.
Claim 41
Dependent Claim
13 words
A method as defined by claim 34, wherein the electric power iS D.C.
Claim 42
Dependent Claim
44 words
A method as defined by claim 30, wherein movement of the core member relative to the bottom plate is controlled in a fashion to maintain at least a portion of the upper face of the core member in constant contact with the molten slag.
Claim 43
Dependent Claim
21 words
A method as defined by claim 30, wherein the core member is reciprocated axially within the hollow ingot during its formation.
Claim 44
Dependent Claim
21 words
A method as defined by claim 30, wherein the core member is rotated reciprocally within the hollow ingot during its formation.
Claim 45
Dependent Claim
65 words
A method as defined by claim 30, wherein a consumable electrode is melted in the slag bath and wherein a source of electric power is connected to the consumable electrode, the mold, and the core member and wherein the mold and the core member are at a common electrical potential to provide a common potential for the core member and the hollow ingot being formed.
Claim 46
Dependent Claim
20 words
A method as defined by claim 41, wherein the bottom plate has the same electrical potential as the core member.
Claim 47
Dependent Claim
17 words
A method as defined by claim 30, wherein the core member is axially aligned with the mold.
Claim 48
Dependent Claim
19 words
A method as defined by claim 30, wherein the mold, bottom plate, and the core member are fluid cooled.
Claim 49
Dependent Claim
26 words
A method as defined by claim 30, wherein the core member is reciprocated axially and is simultaneously rotated reciprocally within the hollow ingot during its formation.
Claim 50
Dependent Claim
168 words
A method of manufacturing a hollow metal ingot by electroslag melting in a mold having disposed therein a core member terminating in an upwardly directed free end portion for forming the internal cavity of a hollow ingot formed in the mold, the ingot resting on a bottom plate, the core member being projected up through the bottom plate of the mold comprising: forming a molten slag bath in the mold; forming a molten metal pool below the molten slag bath; and during the electroslag melting providing relative movement at least in an axial direction, between the core member and the bottom plate, in such a manner that at least a portion of the upper end of the core member is maintained in contact with the molten slag bath during formation of the hollow ingot. 47 A method as defined by claim 46, wherein said forming of the molten metal pool is carried out by the melting of at least one consumable metal electrode in the molten slag bath.
Claim 51
Dependent Claim
24 words
A method as defined by claim 47, wherein the consumable electrode is moved axially into the molten slag bath during melting of the same.
Claim 52
Dependent Claim
25 words
A method as defined by claim 46, including the additional step of moving the mold along its axis during the formation of the hollow ingot.
Claim 53
Dependent Claim
40 words
A method as defined by claim 47, including the additional step of moving the mold along its axis during the formation of the hollow ingot, the movement of the consumable electrode and the mold being in the same axial direction.
Claim 54
Dependent Claim
17 words
A method as defined by claim 46, wherein the mold and the core member are fluid cooled.
Claim 55
Dependent Claim
22 words
A method as defined by claim 46, including the step of bottom pouring molten slag into the mold to start the melting.
Claim 56
Dependent Claim
16 words
A method as defined by claim 46, wherein the mold moves relative to the bottom plate.
Claim 57
Dependent Claim
35 words
A method as defined by claim 53, wherein the bottom plate is in fixed position and the movement of the mold relative to the bottom plate is in a direction away from the bottom plate.
Claim 58
Dependent Claim
24 words
A method as defined by claim 53, wherein the mold is held in fixed position and the bottom plate is moved axially away therefrom.
Claim 59
Dependent Claim
14 words
A method as defined by claim 46, wherein the bottom plate is fluid cooled.
Claim 60
Dependent Claim
25 words
A method as defined by claim 47, wherein a source of electric power is connected to the consumable electrode, the mold and the core member.
Claim 61
Dependent Claim
30 words
A method as defined by claim 57, wherein the source of electric power is connected so that the core member and the bottom plate are at a common electrical potential.
Claim 62
Dependent Claim
13 words
A method as defined by claim 57, wherein the electric power is A.C.
Claim 63
Dependent Claim
13 words
A method as defined by claim 57, wherein the Electric power is D.C.
Claim 64
Dependent Claim
21 words
A method as defined by claim 46, wherein the core member is reciprocated axially within the hollow ingot during its formation.
Claim 65
Dependent Claim
21 words
A method as defined by claim 46, wherein the core member is rotated reciprocally within the hollow ingot during its formation.
Claim 66
Dependent Claim
17 words
A method as defined by claim 46, wherein the core member is axially aligned with the mold.
Claim 67
Dependent Claim
24 words
A method as defined by claim 46, wherein the core member is maintained in fixed position and the bottom plate is moved relative thereto.
Claim 68
Dependent Claim
25 words
A method as defined by claim 46, wherein the bottom plate is maintained in fixed position and the core member is moved axially relative thereto.
Claim 69
Dependent Claim
24 words
A method as defined by claim 65, wherein the mold is maintained in fixed position and is maintained in contact with the bottom plate.
Claim 70
Dependent Claim
34 words
A method as defined by claim 46, wherein said step of forming a molten metal pool is conducted by maintaining a consumable metal electrode in contact with the molten slag bath within the mold.
Claim 71
Dependent Claim
22 words
A method as defined by claim 67, wherein the consumable metal electrode is held in fixed position relative to the bottom plate.
Claim 72
Dependent Claim
23 words
A method as defined by claim 68, wherein the mold is maintained in fixed position and the core member is moved relative thereto.
Claim 73
Dependent Claim
23 words
A method as defined in claim 69, wherein the consumable metal electrode is held in fixed position relative to the mold during remelting.
Claim 74
Dependent Claim
28 words
A method as defined by claim 67, wherein said step of forming a metal pool is conducted by moving a consumable metal electrode into the molten slag bath.
Claim 75
Dependent Claim
28 words
A method as defined by claim 46, wherein the mold moves simultaneously with the bottom plate relative to the core member which is maintained in fixed axial position.
Claim 76
Dependent Claim
29 words
A method as defined by claim 72, wherein said step of forming a molten metal pool is conducted by moving a consumable metal electrode into the molten slag bath.
Claim 77
Dependent Claim
26 words
A method as defined by claim 46, wherein the core member is reciprocated axially and is simultaneously rotated reciprocally within the hollow ingot during its formation.
Claim 78
Independent Claim
150 words
A method of electroslag remelting of at least one consumable electrode in a mold having a remelting zone defined by the lower portion of the mold and having a bottom plate and a cooled core terminating in an upwardly directed free end portion disposed in the mold to form an internal cavity in the ingot being built-up by remelting of the consumable electrode comprising the steps of connecting the consumable electrode and bottom plate and core to a source of electric power, bottom pouring a predetermined quantity of molten slag into the remelting zone, contacting the lower end of the consumable electrode with the molten slag, controlling the axial movement of the mold during remelting so that at least a portion of the upper end of the cooled core is constantly in contact with the molten slag in the mold, and controlling the axial movement of the electrode during remelting.
Claim 79
Independent Claim
150 words
A method of electroslag remelting of at least one consumable electrode in a mold having a remelting zone defined by the lower portion of the mold and having a bottom plate and a cooled core terminating in an upwardly directed free end portion disposed in the mold to form an internal cavity in the ingot being built-up by remelting of the consumable electrode comprising the steps of connecting the consumable electrode and bottom plate and core to a source of electric power, bottom pouring a predetermined quantity of molten slag into the remelting zone, contacting the lower end of the consumable electrode with the molten slag, controlling the axial movement of the mold during remelting so that at least a portion of the upper end of the cooled core is constantly in contact with the molten slag in the mold, and controlling the axial movement of the electrode during remelting.
Claim 80
Dependent Claim
39 words
A method as defined by claim 75, wherein the consumable electrode is maintained in fixed axial position with respect to the mold during remelting and wherein the cooled core is moved axially with respect to the mold during remelting.
Claim 81
Dependent Claim
36 words
A method as defined in claim 75, wherein the consumable electrode is moved axially with respect to the mold during remelting and wherein the cooled core is moved axially with respect to the mold during remelting.
Claim 82
Independent Claim
178 words
A method of manufacturing a hollow metal ingot by electroslag melting a consumable metal electrode in a cooled mold having disposed therein a cooled core member terminating in an upper free end face for forming the internal cavity of a hollow ingot to be formed in the mold, the ingot resting on a bottom plate, comprising: forming a molten slag bath in the mold; forming a molten metal pool below the molten slag bath; and providing relative movement at least in the axial direction, between the core member and the bottom plate, in such a manner that at least a portioN of the upper end face of the core member is maintained in contact with the molten slag bath during formation of the ingot; and the mold, core member, and bottom plate being connected to one potential point of an electric power source and the consumable electrode being connected to the other potential point of the electrical power source; and wherein the core member is both reciprocated axially and rotated reciprocally within the hollow ingot during its formation.
Claim 83
Independent Claim
178 words
A method of manufacturing a hollow metal ingot by electroslag melting a consumable metal electrode in a cooled mold having disposed therein a cooled core member terminating in an upper free end face for forming the internal cavity of a hollow ingot to be formed in the mold, the ingot resting on a bottom plate, comprising: forming a molten slag bath in the mold; forming a molten metal pool below the molten slag bath; and providing relative movement at least in the axial direction, between the core member and the bottom plate, in such a manner that at least a portioN of the upper end face of the core member is maintained in contact with the molten slag bath during formation of the ingot; and the mold, core member, and bottom plate being connected to one potential point of an electric power source and the consumable electrode being connected to the other potential point of the electrical power source; and wherein the core member is both reciprocated axially and rotated reciprocally within the hollow ingot during its formation.
Claim 84
Dependent Claim
26 words
A method as defined by claim 78, including the step of bottom pouring molten slag into the mold to start the melting of the consumable electrode.
Claim 85
Dependent Claim
35 words
A method as defined by claim 78, wherein the core member is maintained in fixed position and the mold and bottom plate together with the hollow ingot are moved axially downwardly over the core member.
Claim 86
Dependent Claim
47 words
A method as defined by claim 78, wherein the consumable electrode is moved axially into the molten slag bath during melting and wherein the consumable electrode and the mold are moved in the same direction relative to the core member which is maintained in fixed axial position.
Claim 87
Dependent Claim
19 words
A method as defined by claim 78, wherein the mold, bottom plate, and the core member are fluid cooled.
Claim 88
Dependent Claim
13 words
A method as defined by claim 78, wherein the electric power is A.C.
Claim 89
Dependent Claim
13 words
A method as defined by claim 78, wherein the electric power is D.C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |