US2713183A - Device for melting and casting under air-exclusion - Google Patents

Device for melting and casting under air-exclusion Download PDF

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Publication number
US2713183A
US2713183A US193778A US19377850A US2713183A US 2713183 A US2713183 A US 2713183A US 193778 A US193778 A US 193778A US 19377850 A US19377850 A US 19377850A US 2713183 A US2713183 A US 2713183A
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United States
Prior art keywords
melting
crucible
shovel
receptacle
container
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Expired - Lifetime
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US193778A
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English (en)
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Winkler Otto Christian
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C23/00—Tools; Devices not mentioned before for moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • 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
    • B22D18/06—Vacuum casting, i.e. making use of vacuum to fill the mould
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere

Definitions

  • the disadvantage of this arrangement lies in the fact that the material to be melted slides down the chute with in creasing speed and drops with considerable kinetic energy exclusion having an air-tightly closed and evacuated container cncasing a melting crucible provided with an electric heating device and at least one mould as Well as a delivery element operable from the outside of said container and arranged between a receptacle for the material to be melted and the melting crucible.
  • the device is in particular characterized in that a feeding chute having at ieast one part tiltable about a horizontal shaft is provided as the delivery element, said feeding chute being located below the receptacle for the material to be melted and with at least the tiltable part above the melting crucible in such a manner that by operating the tiltable part the material to be melted can be fed into the melting crucible successively in any desired timed and quantitative sequence.
  • the feeding chute takes the shape of a tiltable shovel secured to a shaft pivotally and gastightly mounted in the side wall of the container, said An electric heating device consist- 2,713,183 Patented July 19, 1955 shaft beinge provided with an operating means located on the outside of the container. Additional means can be provided to reduce the kinetic energy of the material to be fed contained in the feeding chute practically to zero, for which purpose a flap at the feeding end of the feeding chute may, by way of example, be provided, said flap moving into the path of travel of the material to be fed under the influence of its own weight in such a manner that only a narrow slot is created between the chute and the flap out of which slot the material issues on the feeding chute being shaken.
  • Fig. 1 is a front view of the device for melting and casting in a high vacuum.
  • Fig. 2 a vertical cross-section through the device along line II-II in Fig. 1,
  • Fig. 3 a partial alternative to Fig. 2 in vertical crosssection
  • Fig. 4 a plan view of the container of Figs. 1 and 2 with the flap removed, and
  • Fig. 5 a plan view of a portion of the container of Fig. 4 showing the receptacle in the course of movement to a different operative position.
  • the melting and casting device illustrated in Figs. 1 and 2 comprises a container provided with double walling, said container 16 with the interposition of rubber seals being closed off by a lid 11 similarly provided with a double walling.
  • the interspace between said two Walls is connected in a cooling water flow by means of the pipe lines 12.
  • a high-vacuum diffusion pump 15 of high evacuation capacity is connected to the container 10 at its suction end and to a suitable pre-vacuum pump 16 at the other end.
  • a vessel or melting crucible 18 embedded in a high-frequency coil 17 said two parts being secured to a horizontal shaft 20 and mounted pivotally and vacuum-tightly in the wall of the container 10 by means of a carrier19, said shaft having an operating lever 21 on the outside of said container.
  • the arrangement of the melting crucible 18 is such that on rotation of the shaft 20 said crucible is tilted into the position shown by broken lines in Fig. 2 in which position it is above a mould 22 located vertically in said container and has its spout directed down- Wardly.
  • a receptacle 23 of circular plan view is arranged in the neck of the charging orifice, said receptacle being radially divided into a multiplicity of segment-ike compartments disposed about and secured to a vertical shaft 24. These compartments are open towards the bottom and rest on a horizontal plate 25 rigidly secured in the neck of the charging orifice, said plate closing said compartments and pivotally carrying said shaft 24-.
  • a shaft 26 carrying a hand wheel 27 on the top side of said flap is gas-tightly and also pivotally mounted in such a manner that on said flap being closed said shaft 26 is in line with the shaft 24.
  • the two ends of the shafts 24 and 26 facing each other have means for their rotational coupling.
  • the horizontal plate 25 has an orifice or aperture 28 corresponding at a time with one of the compartments of the receptacle 23, a feeding shovel or hopper 29 of triangular vertical cross-section being arranged below said orifice 28.
  • Said feeding element has an open top disposed beneath said plate 25 and an inclined bottom which shaft 30 has an operating lever 31 on the outside of said container 10, the whole being adaptedin such a manner that by rotating the shaft 34) the shovel 29 is tilted into the position shown by broken lines in Fig. 2 in which position said shovel partly projects into the opening of the melting crucible 18.
  • Thematerial to be melted such as various metals to be alloyed, are filled into the individual compartments of the receptacle 23 in the desiredsequence before evacuation of the container It? with flap 14 hinged upwardly (Fig.4), the plate 25 preventing the material from dropping downwardly. Only the material fed into the compartment located above the orifice 28 drops into the shovel -29. After closing the flap 14 the container 10 is evacuated andthe high-frequency coil 17 is connected to a high-frequency generator. By tilting the shovel 29 downwardly the material contained therein is fed into the'melting crucible 13 where it melts under the influence of the high-frequency field passing through the coil 17.
  • the receptacle 25 is rotated by the angular size of one compartment by means of the hand wheel 27 whilst the shovel 29 hinged upwardly so that the material contained in the next compartment drops through the orifice 2% into the shovel and from there can be fed into the melting crucible 18 by tilting said shovel at will and in any desired quantitative sequence.
  • Fig. shows the receptacle 23 during movement from the operative position of Fig. 4 to a position wherein another compartment will come into registry with ori- V
  • said shovel On tilting said shovel its spout dips relatively far into the crucible so that the material drops into the molten material from a relatively low height whereby splashing of said molten material is avoided.
  • a flap 32 is provided which is pivotally secured to the sidewalls of said shovel by means of the lugs 33 and which rests against the feeding end of said shovel under the influence of its own weight If this shovel .is tilted downwardly, the material contained therein cannot simply slide into the melting crucible, but is kept back by the flap 32 lying in the path of travel of the material. Between the shovel and the flap there is only a slot out of which the material drops out on the shovel being shaken. The material to be melted thus leaves the shovel Without any initial speed and only drops with the speed of gravity from a low height into the molten material.
  • flap 32 instead of the flap 32 some other means, preferably in the form of battles, could be provided to reduce the 'kinetic energy of the trickling material in the shovel almost to zero.
  • the device described it is possible to feed the material to be melted in exactly controllable quantities and in the desired sequence by degrees into the melting crucible, the charging and melting process being capable of being controlled by observation through the glass window 13 in exactly the same manner as whenv melting in the open.
  • the safety of operation of the vacuum melting and casting device is greatly increased and the condition created by which sensitive alloys, by way of example such having components with a strong afiinity to residual gases, can be produced with safety.
  • the device can have means for introducing a protective gas atmosphere into the evacuated interior space of the container.
  • the feeding element between the receptacle '23 and the melting crucible 18 might also be a chute not having the shape of a shovel provided with at least one part tiltable about a horizontal shaft and arranged above the melting crucible.
  • a furnace having a chamber, a crucible and a mould supported within said chamber; the improvement which comprises an open-bottom receptacle radially divided into a plurality of segmental compartments, said receptacle being disposed within said chamber, plate means closing said open bottom of said receptacle and forming a base for said compartments, said plate means being provided with an aperture, shaft means extending from said receptacle to a location outside of said chamber, means outside said chamber for rotating said shaft means intermittently to thereby register said compartments successively and intermittently with said aperture of said plate means, hopper means disposed beneath said aperture of said plate means in a first position and pivotally mounted for movement to a second position to thereby facilitate discharge of said hopper means into said crucible, said mould being disposed to receive material from said crucible, and means for pivoting said hopper means between said first position and said second position, said pivotingmeans extending exteriorly of said chamber for actuation from therewithout, whereby material within each of said compartment
  • said hopper means is triangular in vertical cross-section and has an open top disposed in said first position beneath 4.
  • a furnace having a crucible supported within a chamber and pivotable for discharge of its contents into a mold; an open-bottom receptacle disposed within said chamber and divided into a plurality of compartments, plate means disposed beneath said open bottom of said receptacle and forming a base for said compartments,
  • said plate means being provided with an aperture, means for displacing said receptacle with respect to said plate means to thereby register said compartments successively and intermittently with said aperture of said plate means, said displacing means extending from said receptacle to a location outside of said chamber, hopper'means disposed beneath said aperture of said plate means in a first position and pivotally mounted for movement to a second position to thereby facilitate discharge of said hopper means into said crucible, and means for pivoting said hopper means between said first position and said second position, said pivoting means extending exteriorly of said chamber for actuation from therewithout, whereby material within each of said compartments can be that said material within said hopper means is thereafter supplied to said crucible by actuation of said pivoting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
US193778A 1949-11-03 1950-11-03 Device for melting and casting under air-exclusion Expired - Lifetime US2713183A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH692050X 1949-11-03

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US2713183A true US2713183A (en) 1955-07-19

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US (1) US2713183A (en))
BE (1) BE499088A (en))
FR (1) FR1026701A (en))
GB (1) GB692050A (en))

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2825945A (en) * 1955-05-03 1958-03-11 Cons Electrodynamics Corp Apparatus for melting metal and successively casting into molds
US2841839A (en) * 1952-09-17 1958-07-08 Roebig Adolf Casting machine for chill casting cylindrical liners
US2873491A (en) * 1955-05-02 1959-02-17 Helen E Brennan Apparatus for casting metallic articles
US2875483A (en) * 1959-03-03 Method and apparatus for solidifying steel ingots
US2912731A (en) * 1956-08-02 1959-11-17 Helen E Brennan Method for casting group iv metals
US2912729A (en) * 1956-07-24 1959-11-17 John M Webb Refractory molds
US2932069A (en) * 1956-10-22 1960-04-12 Takahashi Noboru Solid thin film specimen forming apparatus
US2965937A (en) * 1957-02-21 1960-12-27 United States Steel Corp Apparatus for vacuum casting molten metal
US3162908A (en) * 1956-08-02 1964-12-29 William J Ruano Apparatus for applying vacuum and super-sonic vibrations in castings steels
US3460604A (en) * 1964-12-16 1969-08-12 Howmet Corp Method for vacuum melting and casting
US3620294A (en) * 1969-07-11 1971-11-16 Trw Inc Semiautomatic metal casting apparatus
US3987844A (en) * 1973-12-12 1976-10-26 Dso "Metalurgia I Rudodobiv" Pressure casting apparatus with hermetically sealed housing and tiltable melt-containing crucible
US4138209A (en) * 1977-01-25 1979-02-06 Firma Richard Schoeps Kg & Co. Gmbh Apparatus for automatically melting and casting fusible material
US5211218A (en) * 1988-12-30 1993-05-18 Leybold Aktiengesellschaft Melting and casting plant chamber
CN109848397A (zh) * 2019-04-18 2019-06-07 杭州圣檀服饰有限公司 一种磁头制造装置
CN112974778A (zh) * 2019-12-12 2021-06-18 莱州润昇石油设备有限公司 用于真空热壳浇铸装置的二次及多次加料装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788270A (en) * 1954-08-10 1957-04-09 Universal Cyclops Steel Corp Method and apparatus for melting metal under vacuum
US2854228A (en) * 1954-10-14 1958-09-30 Nat Res Corp Vacuum furnace useful in the production of metals
DE1136064B (de) * 1955-03-04 1962-09-06 Balzers Vakuum Ges Mit Beschra Unter Luftabschluss arbeitende Schmelz-, Destillations- und Giessanlage
EP0142584B1 (en) * 1983-11-15 1989-03-22 Elkem Metals Company Process for producing alloys
CN104005691A (zh) * 2014-06-20 2014-08-27 祁欣 一种天气雷达中心主柱透明舱门
CN114309491B (zh) * 2021-12-29 2023-11-14 大连船用推进器有限公司 便于观察大型螺旋桨桨叶烘型状态的型腔结构及方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US262625A (en) * 1882-08-15 Apparatus for making wire-solder
US1350972A (en) * 1919-10-08 1920-08-24 Irvin King Method of and apparatus for pouring molten metal
US1354286A (en) * 1919-03-27 1920-09-28 New Process Metals Corp Method of and apparatus for melting and casting metals
US1511782A (en) * 1921-02-12 1924-10-14 Gas Res Co Fuel-feeding mechanism
GB439472A (en) * 1935-06-29 1935-12-06 Siemens Ag Improvements in and relating to coreless induction furnaces
FR805977A (fr) * 1935-08-28 1936-12-04 Distributeur automatique réglable de combustible pour foyers de chauffage et autres
US2289484A (en) * 1942-03-13 1942-07-14 Ajax Electrothermic Corp Casting apparatus
US2371604A (en) * 1941-08-16 1945-03-20 Joseph B Brennan Method of and apparatus for making metal wire, rod, strip, and the like
US2437685A (en) * 1943-01-04 1948-03-16 Celanese Corp Process and apparatus for the melt extrusion of artificial materials
US2625719A (en) * 1950-09-27 1953-01-20 Nat Res Corp Vacuum casting apparatus
US2640860A (en) * 1949-10-21 1953-06-02 Allegheny Ludlum Steel Apparatus for melting titanium to form ingots

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US262625A (en) * 1882-08-15 Apparatus for making wire-solder
US1354286A (en) * 1919-03-27 1920-09-28 New Process Metals Corp Method of and apparatus for melting and casting metals
US1350972A (en) * 1919-10-08 1920-08-24 Irvin King Method of and apparatus for pouring molten metal
US1511782A (en) * 1921-02-12 1924-10-14 Gas Res Co Fuel-feeding mechanism
GB439472A (en) * 1935-06-29 1935-12-06 Siemens Ag Improvements in and relating to coreless induction furnaces
FR805977A (fr) * 1935-08-28 1936-12-04 Distributeur automatique réglable de combustible pour foyers de chauffage et autres
US2371604A (en) * 1941-08-16 1945-03-20 Joseph B Brennan Method of and apparatus for making metal wire, rod, strip, and the like
US2289484A (en) * 1942-03-13 1942-07-14 Ajax Electrothermic Corp Casting apparatus
US2437685A (en) * 1943-01-04 1948-03-16 Celanese Corp Process and apparatus for the melt extrusion of artificial materials
US2640860A (en) * 1949-10-21 1953-06-02 Allegheny Ludlum Steel Apparatus for melting titanium to form ingots
US2625719A (en) * 1950-09-27 1953-01-20 Nat Res Corp Vacuum casting apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875483A (en) * 1959-03-03 Method and apparatus for solidifying steel ingots
US2841839A (en) * 1952-09-17 1958-07-08 Roebig Adolf Casting machine for chill casting cylindrical liners
US2873491A (en) * 1955-05-02 1959-02-17 Helen E Brennan Apparatus for casting metallic articles
US2825945A (en) * 1955-05-03 1958-03-11 Cons Electrodynamics Corp Apparatus for melting metal and successively casting into molds
US2912729A (en) * 1956-07-24 1959-11-17 John M Webb Refractory molds
US3162908A (en) * 1956-08-02 1964-12-29 William J Ruano Apparatus for applying vacuum and super-sonic vibrations in castings steels
US2912731A (en) * 1956-08-02 1959-11-17 Helen E Brennan Method for casting group iv metals
US2932069A (en) * 1956-10-22 1960-04-12 Takahashi Noboru Solid thin film specimen forming apparatus
US2965937A (en) * 1957-02-21 1960-12-27 United States Steel Corp Apparatus for vacuum casting molten metal
US3460604A (en) * 1964-12-16 1969-08-12 Howmet Corp Method for vacuum melting and casting
US3620294A (en) * 1969-07-11 1971-11-16 Trw Inc Semiautomatic metal casting apparatus
US3987844A (en) * 1973-12-12 1976-10-26 Dso "Metalurgia I Rudodobiv" Pressure casting apparatus with hermetically sealed housing and tiltable melt-containing crucible
US4138209A (en) * 1977-01-25 1979-02-06 Firma Richard Schoeps Kg & Co. Gmbh Apparatus for automatically melting and casting fusible material
US5211218A (en) * 1988-12-30 1993-05-18 Leybold Aktiengesellschaft Melting and casting plant chamber
CN109848397A (zh) * 2019-04-18 2019-06-07 杭州圣檀服饰有限公司 一种磁头制造装置
CN112974778A (zh) * 2019-12-12 2021-06-18 莱州润昇石油设备有限公司 用于真空热壳浇铸装置的二次及多次加料装置

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Publication number Publication date
GB692050A (en) 1953-05-27
BE499088A (en))
FR1026701A (fr) 1953-04-30

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