US3663131A - Casting device - Google Patents

Casting device Download PDF

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Publication number
US3663131A
US3663131A US135406A US3663131DA US3663131A US 3663131 A US3663131 A US 3663131A US 135406 A US135406 A US 135406A US 3663131D A US3663131D A US 3663131DA US 3663131 A US3663131 A US 3663131A
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US
United States
Prior art keywords
casting
magnetic
casting box
box
magnets
Prior art date
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.)
Expired - Lifetime
Application number
US135406A
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English (en)
Inventor
Fritz Hegewaldt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19681608039 external-priority patent/DE1608039A1/de
Application filed by BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Application granted granted Critical
Publication of US3663131A publication Critical patent/US3663131A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/04—Use of lost patterns
    • B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C11/00—Moulding machines characterised by the relative arrangement of the parts of same
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/58—Processes of forming magnets

Definitions

  • ABSTRACT A device is provided for making castings conforming to a mold while leaving the impression of the casting preserved in the mass of particles of the casting material.
  • a casting box containing loose magnetizable particles with which non-magnetizable particles may be admixed and the casting is carried out through the action of magnetic forces generated either by electromagnets or permanent magnets and the casting action is continued at least until the casting becomes strong enough to be self-supporting.
  • the source of the magnetic forces for carrying out the casting include at least one permanent magnet or electro-magnet having one or more pole shoes which are adjustable relative to the casting box. Each magnet may be subdivided into a plurality of individual magnets.
  • the casting box is mounted on guides of non-magnetic material which guides may be directly on the casting box or on the magnets or on their pole shoes. Simplified casting is obtained at reduced cost.
  • This invention relates to electromagnetic or magnetic casting wherein a predetermined shape or object is formed conforming to a mold in loose magnetizable particles which may or may not be mixed with non-magnetizable particles and under conditions such that the impression of the cast articles or object remains preserved in the loose magnetizable particles.
  • the casting is carried out by the application of magnetic forces to the magnetizable particles which are disposed in a casting box mounted in a suitable framework through nonmagnetizable connections. The magnetizable forces are applied until the shape to be produced from the magnetizable particles is at least strong enough to be self-supporting.
  • magnetizable particles are cast into a predetermined or preselected shape or object utilizing generators of magnetic fields other than induction coils. In general this is accomplished by means of one or more magnets each of which has one or more pole shoes to create the cohesive forces necessary to consolidate the loose magnetizable casting material particles into the required form of shape.
  • the loose magnetizable particles are not only initially unconnected to one another, but they can be admixed with non-magnetizable particles.
  • the invention provides an entirely new means and method for making magnetic or electromagnetic castings and without the use of an induced magnetic field.
  • the cohesive forces required to ring the loose magnetizable particles, with or without the admixed non-magnetizable particles, into the shape determined by the mold cavity can be created either by electromagnets or by permanent magnets which are highly advantageous and relatively inexpensive as compared with the prior known use of electrical fields generated by induction coils which latter are completely eliminated by the present invention.
  • the construction of the casting device which is hereinafter described in detail has an advantage that the permanent magnets or electromagnets may be readily arranged or re-arranged with respect to the casting material so as to effect casting in the simplest manner and in the shortest period of time and for that purpose the magnets may be arranged opposite any desired surface of the casting box and may be divided into a plurality of smaller or individual magnets.
  • the casting box is provided with non-magnetic guides or supports which do not interfere with the casting operation and which also serve to maintain the necessary spacing from the magnet to the pole shoes, each magnet being provided with one or more pole shoes and all the components of the casting device being relatively movable.
  • the non-magnetic guides can also be arranged either on the casting box or on the magnets or on their pole shoes.
  • FIG. 1 shows a casting device according to the invention in cross-sectional view
  • FIG. 2 shows a plan view of FIG. 1.
  • casting box 1 made of any suitable or known material contains casting material 3 in the form of loose magnetizable particles of known material with which, if desired and depending on the particular casting to be produced and the use to which it is put, may be admixed therewith non-magnetizable particles.
  • the casting material 3 has a cavity or mold 4 therein as shown and which may be of circular, oval, irregular or any other desired shape and size according to the casting which is to be produced and the cavity or mold may be maintained by means of a gasifiable or vaporizable material. It is to be understood that the particular mold cavity illustrated in the drawing constitutes no limitation on the invention, but is purely for purpose of exemplification.
  • the casting box 1 is supported by and connected to pivots 19,20 in the form of double columns 21,22 supported on base members 8,9 rising from a base surface or the ground and having as parts thereof the pole shoes 5,6 by means of the nonmagnetic guides 15,16 and this whole arrangement is movable or displaceable perpendicularly to the plane of the drawing in FIG. 1 by means of rollers 2 in a manner per se known.
  • the casting material 3 with its cavity or mold 4 are movable with casting box 1 with relation to the pole shoes 5,6 which form part of the electromagnet 7 and there is a transverse member shown extending between pivots 19,20 around which and in the space therebetween under the casting box 1 and rollers 2 it is connected by a field coil 10 which is a part of the electromagnet 7 and this field coil 10 is provided with suitable circuitry 11,12 as shown which connects the electromagnet and its field coil with a source of current (not shown).
  • adjustable permanent magnets 13,14 are arranged parallel to the axes of the rollers 2, the magnet designated 13 being in operating position, whereas the magnet designated 14 has been displaced somewhat to make it possible to remove the casting box 1 from the pole shoes 5 ,6 of the electromagnet 7 after the current supply has been discontinued.
  • pole shoes 5,6 of the elec tromagnet 7 and the pole shoes of the permanent magnets 13,14 have exchangeable or replaceable non-magnetic guides heretofore referred to as 15,16 (FIG. 1) and additional nonmagnetic guides 17,18 (FIG.
  • casting box 1 can he slid or moved relative to rollers 2 in order to bring it to the correct distance from pole shoes 5,6 at the time it is moved between those pole shoes for commencing the casting operation.
  • guides 17,18 maintain the permanent magnets 13,14 at the prescribed distance from casting box 1.
  • the pivots 19,20 above referred to in connection with the double columns 21, 22 contain surface markings thereon (in FIG. 1) which have the significance that the strength of the magnetic field can be increased or decreased depending upon the mold cavity and the shape of the article or object to be cast and this is accomplished by relative shifting or rearrangement of the pole shoes 5,6 of electromagnet 7.
  • the amount and nature of re-arrangement is not only dependent upon the size and shape of the object or article to be cast, i.e. the configuration of the mold cavity, but the principles for doing this are themselves per se known.
  • the invention obviates the necessity of using induction coils and moving them relative to the casting material and provides a superior and more economical casting device and method wherein relatively inexpensive and simple permanent magnets or electromagnets are employed which are easily adjustable in relation to the casting box for changing the field strength acting on the parti cles which are to be cast magnetically.
  • casting box 1 of sheet iron or steel plate and the casting material 3 is formed of round steel grits of 0.2 to 2 mm in diameter.
  • the vaporizable or gasifiable mold 4 is composed of foamed polystyrene.
  • the preferred form of magnet is illustrated in the drawing wherein the electromagnets are supplied with direct current and have a magnetic flux of 10,000 to 12,000 gausses and an air gap of 1,500 gausses.
  • a device for magnetic casting in a casting box movable on rollers comprising a casting box having a mold cavity formed in mold material of loose magnetizable particles and in which material the cavity is preserved until formation of a supporting wall thickness of casting by the action of magnetic forces, a stationary electromagnet to generate magnetic casting forces, a field coil for the electromagnet arranged below the rollers supporting the casting box and pole members for said electromagnet adjustable parallel to the direction of motion of the casting box at a distance therefrom on pivots and additional magnets enclosing the casting box displaceable perpendicularly to the direction of travel of the casting box to the extent that the casting box is advanced on the rollers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Devices For Molds (AREA)
US135406A 1968-01-03 1971-04-19 Casting device Expired - Lifetime US3663131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681608039 DE1608039A1 (de) 1968-01-03 1968-01-03 Giessereieinrichtung

Publications (1)

Publication Number Publication Date
US3663131A true US3663131A (en) 1972-05-16

Family

ID=5681466

Family Applications (1)

Application Number Title Priority Date Filing Date
US135406A Expired - Lifetime US3663131A (en) 1968-01-03 1971-04-19 Casting device

Country Status (4)

Country Link
US (1) US3663131A (fr)
CH (1) CH473623A (fr)
FR (1) FR1597257A (fr)
GB (1) GB1219779A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867490A (en) * 1972-04-18 1975-02-18 Boliden Ab Method of agglomerating particulate material
US4444550A (en) * 1982-10-20 1984-04-24 Loubier Robert J Permanent magnet mold apparatus for injection molding plastic bonded magnets
US4557680A (en) * 1982-04-12 1985-12-10 Dayco Corporation Apparatus for making an endless power transmission belt construction
WO1998023401A1 (fr) * 1996-11-27 1998-06-04 Ks Aluminium-Technologie Ag Procede et dispositif pour produire des pieces coulees
US6578495B1 (en) * 1999-11-23 2003-06-17 Magnemotion, Inc. Modular linear motor tracks and methods of fabricating same
US20070044676A1 (en) * 2005-07-22 2007-03-01 Magnemotion Inc. Guideway activated magnetic switching of vehicles
US9346371B2 (en) 2009-01-23 2016-05-24 Magnemotion, Inc. Transport system powered by short block linear synchronous motors
US9771000B2 (en) 2009-01-23 2017-09-26 Magnemotion, Inc. Short block linear synchronous motors and switching mechanisms
US9802507B2 (en) 2013-09-21 2017-10-31 Magnemotion, Inc. Linear motor transport for packaging and other uses
CN108273964A (zh) * 2016-03-14 2018-07-13 扬州华铁铁路配件有限公司 一种提高表面质量的气缸套的生产方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2828160B2 (de) * 1978-06-23 1981-04-30 Aeg-Elotherm Gmbh, 5630 Remscheid Elektromagnetische Rühreinrichtung für Stranggießanlagen
GB8414129D0 (en) * 1984-06-02 1984-07-04 Cosworth Res & Dev Ltd Casting of metal articles

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581489A (en) * 1948-04-09 1952-01-08 United Shoe Machinery Corp Apparatus for making casts
US3216074A (en) * 1964-02-26 1965-11-09 Edward N Harrison Method for making shaped foundry articles
DE1806277A1 (de) * 1968-10-31 1970-05-06 Bbc Brown Boveri & Cie Verfahren und Vorrichtung zum Abstuetzen von Formmasken

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581489A (en) * 1948-04-09 1952-01-08 United Shoe Machinery Corp Apparatus for making casts
US3216074A (en) * 1964-02-26 1965-11-09 Edward N Harrison Method for making shaped foundry articles
DE1806277A1 (de) * 1968-10-31 1970-05-06 Bbc Brown Boveri & Cie Verfahren und Vorrichtung zum Abstuetzen von Formmasken

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867490A (en) * 1972-04-18 1975-02-18 Boliden Ab Method of agglomerating particulate material
US4557680A (en) * 1982-04-12 1985-12-10 Dayco Corporation Apparatus for making an endless power transmission belt construction
US4444550A (en) * 1982-10-20 1984-04-24 Loubier Robert J Permanent magnet mold apparatus for injection molding plastic bonded magnets
WO1998023401A1 (fr) * 1996-11-27 1998-06-04 Ks Aluminium-Technologie Ag Procede et dispositif pour produire des pieces coulees
US6578495B1 (en) * 1999-11-23 2003-06-17 Magnemotion, Inc. Modular linear motor tracks and methods of fabricating same
US20070044676A1 (en) * 2005-07-22 2007-03-01 Magnemotion Inc. Guideway activated magnetic switching of vehicles
US9346371B2 (en) 2009-01-23 2016-05-24 Magnemotion, Inc. Transport system powered by short block linear synchronous motors
US9771000B2 (en) 2009-01-23 2017-09-26 Magnemotion, Inc. Short block linear synchronous motors and switching mechanisms
US10112777B2 (en) 2009-01-23 2018-10-30 Magnemotion, Inc. Transport system powered by short block linear synchronous motors
US9802507B2 (en) 2013-09-21 2017-10-31 Magnemotion, Inc. Linear motor transport for packaging and other uses
CN108273964A (zh) * 2016-03-14 2018-07-13 扬州华铁铁路配件有限公司 一种提高表面质量的气缸套的生产方法
CN108273964B (zh) * 2016-03-14 2019-07-26 扬州华铁铁路配件有限公司 一种提高表面质量的气缸套的生产方法

Also Published As

Publication number Publication date
FR1597257A (fr) 1970-06-22
GB1219779A (en) 1971-01-20
CH473623A (de) 1969-06-15

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