GB991513A - Improvements in and relating to composite articles - Google Patents

Improvements in and relating to composite articles

Info

Publication number
GB991513A
GB991513A GB1183463A GB1183463A GB991513A GB 991513 A GB991513 A GB 991513A GB 1183463 A GB1183463 A GB 1183463A GB 1183463 A GB1183463 A GB 1183463A GB 991513 A GB991513 A GB 991513A
Authority
GB
United Kingdom
Prior art keywords
container
valve
metal
mould
valve rod
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
Application number
GB1183463A
Original Assignee
Earl Avery Thompson
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 to US18447662A priority Critical
Application filed by Earl Avery Thompson filed Critical Earl Avery Thompson
Publication of GB991513A publication Critical patent/GB991513A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00Casting in, on, or around objects which form part of the product

Abstract

991,513. Casting machines; casting composite articles. E. A. THOMPSON. March 26, 1963 [April 2, 1962], No. 11834/63. Heading B3F. A method of making a composite casting comprises introducing a first amount of molten metal into a mould and allowing it to cool until a surface skin has formed thereon and then introducing a second molten metal into the mould into contact with the said skin to remelt it and cause the metals to mutually blend within a junction zone. In a machine for casting valve tappets in shell moulds, the first and second molten metals are supplied from a pair of spaced, heated containers 16, 16<SP>1</SP>, the moulds 10 being positioned successively to receive metal from each source by an. intermittently moving rotating table 14, or endless chain &c., driven by a fluid motor 138 through a step-bystep mechanism. Each container is pressurized by an inert gas from a source A and the level of molten metal therein is maintained between limits, the container being pivotally mounted on a bracket 34 movement of which due to variations in weight of the melt actuates limit switches LS1, LS2 controlling a solenoid which actuates a valve rod 24 in a second container 22. The valve rod 24 is oscillated and in the pouring position shown in Fig. 1 molten metal is delivered to the container 16, 16<SP>1</SP> by pressurized inert gas supplied through the valve rod 24 from a valve 122. Each pouring container 16, 16<SP>1</SP> comprises a valve 18 for metering a predetermined quantity of molten metal to the mould, the hollow valve rod 18 being oscillated about its longitudinal axis by a fluid motor 62. In the pouring position shown in Fig. 1, metal from the container 16 cannot enter the measuring cavity 46 in the valve rod. When the rod is oscillated a port 44 disconnects from the pouring spout 32 and connects with an inlet port 42 while simultaneously a predetermined volume of inert gas is admitted to the interior of the rod by a valve 132 to regulate the volume of metal entering the cavity 46 from the container 16. Oscillation of the valve 18 then connects the port 44 with the pouring spout 36 and the pressure of the now heated gas in the valve rod 18 forces the measured charge into the mould, followed by some escaping gas to minimize oxidation of the metal in the mould. The second metal is similarly metered and poured from the second source 16<SP>1</SP>. The moulds are fed to and removed from the table 14 by pivoting arms 174, Figs. 4 and 5, which comprise fluid-piston actuated jaws 195. The various fluid motors and valves &c. are operated in timed sequence by a cam-shaft 210, Fig. 1.
GB1183463A 1962-04-02 1963-03-26 Improvements in and relating to composite articles Expired GB991513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US18447662A true 1962-04-02 1962-04-02

Publications (1)

Publication Number Publication Date
GB991513A true GB991513A (en) 1965-05-12

Family

ID=22677036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1183463A Expired GB991513A (en) 1962-04-02 1963-03-26 Improvements in and relating to composite articles

Country Status (2)

Country Link
DE (1) DE1302846C2 (en)
GB (1) GB991513A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752212A (en) * 1970-07-20 1973-08-14 Thompson E Manuf Co Method of forming castings of different metals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5004130A (en) * 1986-12-01 1991-04-02 Arva Ag Outlet and flow control device for metallurgical vessels and process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752212A (en) * 1970-07-20 1973-08-14 Thompson E Manuf Co Method of forming castings of different metals

Also Published As

Publication number Publication date
DE1302846C2 (en) 1973-06-28
DE1302846B (en) 1972-11-30

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