[go: up one dir, main page]

US3452713A - Rotary mold coating machine - Google Patents

Rotary mold coating machine Download PDF

Info

Publication number
US3452713A
US3452713A US608326A US3452713DA US3452713A US 3452713 A US3452713 A US 3452713A US 608326 A US608326 A US 608326A US 3452713D A US3452713D A US 3452713DA US 3452713 A US3452713 A US 3452713A
Authority
US
United States
Prior art keywords
mould
nozzle
core
pipe
support
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
US608326A
Other languages
English (en)
Inventor
Michel Pierrel
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.)
Pont a Mousson SA
Centre de Recherches de Pont a Mousson
Original Assignee
Pont a Mousson 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
Application filed by Pont a Mousson SA filed Critical Pont a Mousson SA
Application granted granted Critical
Publication of US3452713A publication Critical patent/US3452713A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B22D13/101—Moulds
    • B22D13/102—Linings for moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B22D13/101—Moulds
    • B22D13/104—Cores

Definitions

  • the present invention relates to the centrifugal casting of iron pipes and like objects in accordance with the de Lavaud method and more particularly to a machine provided with an improved device for applying a layer of ferrosilicon powder or other powdered product on the mould so as to favour the graphitization during the solidification of the iron.
  • ferrosilicon avoids the surface hardening of the pipes and results in a grey iron structure.
  • the ferrosilicon can be applied on the shell or mould either by means of a trough whose length corresponds to that of the mould, this trough being turned over inside the mould, or by means of a gun or projecting nozzle.
  • the ferrosilicon projecting or atomizing nozzle is mounted at the end of the casting trough near the casting nose of the latter and the product is projected immediately before pouring by moving the mould-carrying carriage relative to the trough in such manner that the mould is covered with ferrosilicon throughout its length.
  • the ferrosilicon projecting or atomizing nozzle is mounted at the end of the casting trough near the casting nose of the latter and the product is projected immediately before pouring by moving the mould-carrying carriage relative to the trough in such manner that the mould is covered with ferrosilicon throughout its length.
  • the object of the invention is to remedy these drawbacks by providing a centrifugal casting machine with a device which projects a powdered product on the wall of the mould before pouring the metal, said device being suitable for all dimensions of moulds and enabling them to be covered during the movement of the carriage towards the pouring trough in the course of a single forward travel.
  • the invention aims at providing a centrifugal casting machine employing a rotary mould, said machine comprising a retractable support for the pipe socket core and a nozzle for projecting a powder for coating the inner wall of the mould, said nozzle being fixed to said core support inside said core.
  • a mould or shell even of small diameter can be equipped with a coating powder projecting device without loss of production time. Consequently, the production rate is accelerated for moulds of small diameter. Moreover, the coating operation can be rendered automatic.
  • FIG. 1 is a diagrammatic elevational view, partly in section, of a centrifugal casting machine equipped in accordance with the invention.
  • FIG. 2 is a detail sectional view, on an enlarged scale, of the atomizing device.
  • the invention relates to a centrifugal casting machine in which the iron fed by a roughly horizontal passage or trough A is poured into a shell or mould 1 having an axis X-X for casting a pipe which has a socket and is composed for example of iron.
  • the mould 1 rotates about its axis and is mounted on a support carriage 2 which undergoes a movement of translation relative to the trough A.
  • the mould 1 comprises, at the end thereof corresponding to the socket of the pipe to be obtained, a divergent cavity 3 in the form of a bell in which is mounted a hollow sand core N which determines the inner shape of the socket of the pipe.
  • the core N is carried by a support S which includes a face plate 4 extended by a protective deflecting cone 5 which has the same axis X-X as the core N and mould 1.
  • the plate 4 is fitted into the end of the bell 3 of the mould 1.
  • the support S is mounted in the known manner on the end of a pivotal arm B which is pivotally mounted on the carriage 2.
  • This arm B is adapted to be swung away from the axis X-X of the mould 1 for receiving the core N to be placed in the mould.
  • a nozzle 6 for blowing coating powder for example ferrosilicon is mounted inside the support S of the core N on the axis X-X of the mould 1.
  • the nozzle 6 When a core N is placed in position on the support S, the nozzle 6 is surrounded by this core as by a sleeve. It will be observed that the diameter of the inner cavity of the core N permits easily housing the nozzle 6 even if the core N is for a mould of small diameter (for example for casting pipes having a diameter of 50 mm.).
  • the nozzle 6 is for example suspended from an arm 7 fixed inside the deflecting cone 5.
  • This nozzle is fed with ferrosilicon powder by a pipe 8 which is partially flexible so as to allow the pivoting movement of the arm B.
  • the pipe 8 is connected to a ferrosilicon supply tank 9 carried by the carriage 2. Extending into the tank 9 containing the ferrosilicon powder is the perforated end of a pipe 10 for blowing compressed air.
  • the pipe 10 is connected to a compressed air supply pipe 11 through a distributor D controlled by an electrovalve E.
  • the pipe 11 is flexible and suspended from hooks 12 which are movable so as to follow the movements of
  • the device is employed in the following manner:
  • the carriage 2 When the support S has received a core N, the carriage 2 is immediately shifted in the direction of the trough A. At the same time, the distributor D is actuated so as to supply compressed air to the tank 9 and consequently the blow of the ferrosilicon powder through the nozzle 6.
  • the mould 1 is therefore coated solely during the forward travel of the carriage and consequently with no loss of time.
  • the pipe is cast in the course of the return travel of the carriage.
  • the electrovalve E actuating the distributor D can be controlled automatically at the same time as the carriage starts to move. Further, as has been explained hereinbefore, the inner cavity of the hollow socket cores enables a projecting nozzle to be disposed therein even when it concerns cores of smalldiameter moulds.
  • a centrifugal casting machine for casting socketend pipes comprising a rotary mould rotatable in a carriage and having an innefwall and a hollow core fbffdr'fning the inside of the pipe socket end carried by a support retractable from said mould; the feature that a nozzle for projecting a powdered product for coating the inner wall of said rotary mould is combined with said support, said nozzle being mounted on said support to be held in position axially of said mould and located inside said core.
  • a machine as claimed in claim 2 comprising a flexible pipe for connection to a source of compressed air and communicating with the interioroi said tank for blow- 1,963,149 6/1934 Russell et a1. 164-267 2,336,946 12/1943 Marden et al 118-308 X 2,419,951 5/ 1947 Kastel 1l8321 X WALTER A. SCHEEL, Primary Examiner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Casting Devices For Molds (AREA)
  • Spray Control Apparatus (AREA)
US608326A 1966-01-21 1967-01-10 Rotary mold coating machine Expired - Lifetime US3452713A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR46703A FR1502635A (fr) 1966-01-21 1966-01-21 Machine de coulée de la fonte par centrifugation

Publications (1)

Publication Number Publication Date
US3452713A true US3452713A (en) 1969-07-01

Family

ID=8599344

Family Applications (1)

Application Number Title Priority Date Filing Date
US608326A Expired - Lifetime US3452713A (en) 1966-01-21 1967-01-10 Rotary mold coating machine

Country Status (9)

Country Link
US (1) US3452713A (fr)
BE (1) BE691443A (fr)
CH (1) CH468224A (fr)
DE (1) DE1508818B1 (fr)
ES (1) ES335695A1 (fr)
FR (1) FR1502635A (fr)
GB (1) GB1121519A (fr)
NL (1) NL6700929A (fr)
SE (1) SE320190B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109821674A (zh) * 2019-03-21 2019-05-31 中信戴卡股份有限公司 一种模具润滑剂旋转喷涂喷盘装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114082915B (zh) * 2021-10-27 2023-10-03 新兴铸管股份有限公司 基于新型循环使用型芯的承口制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1963149A (en) * 1933-06-06 1934-06-19 United States Pipe Foundry Centrifugal pipe casting apparatus
US2336946A (en) * 1941-12-10 1943-12-14 Westinghouse Electric & Mfg Co Method and apparatus for coating envelopes for electric lamps
US2419951A (en) * 1945-03-03 1947-05-06 Continental Can Co Sealing compound applying apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE629385C (de) * 1936-04-29 Buderus Eisenwerk Verfahren zum duennschichtigen Auskleiden mittels Zufuehrungsrinne beschickter Schleudergusskokillen
CH105533A (de) * 1923-08-08 1924-07-01 Davis Moore William Verfahren zur Herstellung einer feuerfesten Giessform, insbesondere für Rotationsguss.
DE677265C (de) * 1932-10-19 1939-06-22 Internat De Lavaud Mfg Corp Lt Verfahren und Vorrichtung zur Herstellung eiserner Schleudergussrohre und nach dem Verfahren hergestelltes Schleudergussrohr
DE679580C (de) * 1933-06-06 1939-08-09 Internat De Lavaud Mfg Corp Lt Verfahren und Vorrichtung zur Herstellung eiserner Schleudergussrohre
GB473034A (en) * 1935-12-06 1937-10-05 Friedrich Littner Improved process and device for the production of hollow metal bodies by centrifugal casting

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1963149A (en) * 1933-06-06 1934-06-19 United States Pipe Foundry Centrifugal pipe casting apparatus
US2336946A (en) * 1941-12-10 1943-12-14 Westinghouse Electric & Mfg Co Method and apparatus for coating envelopes for electric lamps
US2419951A (en) * 1945-03-03 1947-05-06 Continental Can Co Sealing compound applying apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109821674A (zh) * 2019-03-21 2019-05-31 中信戴卡股份有限公司 一种模具润滑剂旋转喷涂喷盘装置

Also Published As

Publication number Publication date
FR1502635A (fr) 1967-11-24
DE1508818B1 (de) 1969-09-04
SE320190B (fr) 1970-02-02
BE691443A (fr) 1967-05-29
CH468224A (fr) 1969-02-15
ES335695A1 (es) 1967-12-01
NL6700929A (fr) 1967-07-24
GB1121519A (en) 1968-07-31

Similar Documents

Publication Publication Date Title
US2399606A (en) Centrifugal casting
ES333227A1 (es) Un metodo de moldear metal en la cavidad de un molde perma-nente.
US3452713A (en) Rotary mold coating machine
US2449136A (en) Method of making molds
US3446265A (en) Process for making permanently backed shell molds
GB722816A (en) Improvements relating to precision casting by the lost-wax process
US3456712A (en) Centrifugal casting method
US1963149A (en) Centrifugal pipe casting apparatus
GB1368167A (en) Lead dispenser for grid casting
US4628984A (en) Method and apparatus for applying a layer of material to a centrifugal casting mold
PL55271B1 (fr)
US2162829A (en) Mold coating mechanism for metallic centrifugal pipe molds
US1963147A (en) Centrifugal pipe casting apparatus
US2409779A (en) Apparatus for introducing molten material into molds
US3334683A (en) Trough shifting and dumping apparatus
US1963146A (en) Method of casting centrifugal pipes
JPS5557368A (en) Production of hollow casting
US1500428A (en) Centrifugal casting
US2772453A (en) Foundry moulding apparatus
JPS57109559A (en) Casting method by direct cooling of casting
GB808347A (en) Centrifugal casting apparatus
GB1131633A (en) Improvements in or relating to apparatus for forming hollow cylindrical moulds in mould boxes
GB789916A (en) Improvements in or relating to a method for making tubular metal castings in a horizontal cylindrical metal mold
GB1160515A (en) Pouring Mechanism for Centrifugal Casting Machine.
DE3065321D1 (en) Pouring tubes for continuous electrorotative casting of metals