Distributor device for use in metal casting

• US 7,131,482 B2
• Filed: 10/24/2003
• Issued: 11/07/2006
• Est. Priority Date: 08/05/1999
• Status: Expired due to Term

• Current Assignee: Pyrotek Engineering Materials Limited (Pyrotek Incorporated)
• Original Assignee: Pyrotek Engineering Materials Limited (Pyrotek Incorporated)
• Inventors: Vincent, Mark, Tremblay, Sylvain
• Primary Examiner(s): Kerns, Kevin
• Assistant Examiner(s): LIN, ING HOUR
• Application Number:
  US10/693,351
• Publication Number:
  US 20040084172A1
• Time in Patent Office: 1,110 Days
• Field of Search: 164/437, 164/337, 164/488, 164/489, 164/133, 164/134, 222/606, 222/594
• US Class Current: 164/337
• CPC Class Codes: B22C 9/082 Sprues, pouring cups
• CPC Class Codes: B22D 11/103 Distributing the molten metal, e.g. using runners, floats, distributors
• CPC Class Codes: B22D 11/119 by filtering
• CPC Class Codes: B22D 35/04 into moulds, e.g. base plates, runners
• CPC Class Codes: B22D 41/003 with impact pads
• CPC Class Codes: B22D 41/50 Pouring-nozzles
• CPC Class Codes: B22D 7/12 Appurtenances, e.g. for sintering, for preventing splashing
• CPC Class Codes: C22B 21/0084 melting and handling molten aluminium C22B21/02, C22B21/04 and C22B21/06 take precedence

Abstract

A distributor device for use in aluminium casting includes a rigid, substantially bowl-shaped receptacle (2) of a refractory material having a base member (4) and a peripheral wall (6) that extends upwards from the base. The receptacle has an inlet opening (8) towards the upper end thereof and a pair of outlet openings (14) towards the base thereof. The device is constructed and arranged such that, in use, molten aluminium poured into the distributor device through the inlet opening (8) is redirected by the distributor device and flows outwards into the mould through the outlet openings (14).

Claims

1. A distributor device for use in an aluminium casting operation to direct the flow of molten aluminium into a mould, the distributor device comprising:

a rigid, substantially bowl-shaped receptacle of a refractory material having a base member and a peripheral wall that extends upwards from the base member and includes two side wall members and two end wall members, said receptacle having an inlet opening towards the upper end thereof and at least one outlet opening in each of said end wall members towards the base member, the device being constructed and arranged such that in use, molten aluminium poured into the distributor device through the inlet opening is redirected by the distributor device and flows substantially horizontally outwards into the mould through said outlet openings;

wherein the upper surface of the base member is inclined downwards towards the outlet openings.

2. The distributor device according to claim 1, wherein each outlet opening is

arranged such that the upper surface of the base member and a lower boundary of the outlet opening is substantially flush such that the upper surface of the base member extends continuously through each end wall.

3. The distributor device according to claim 1, wherein the base angle “

A”

is greater than zero and less than ten degrees.

4. The distributor device according to claim 1, wherein the separation of the side wall members increases towards ends of the side wall members.

5. The distributor device according to claim 4, wherein the side wall members are curved.

6. The distributor device according to claim 1, wherein the base member includes a raised flow deflector.

7. The distributor device according to claim 1, wherein the peripheral wall is inclined outwards.

8. The distributor device according to claim 1, including a heating element for pre-heating the device.

9. The distributor device according to claim 1, including a support structure.

10. The distributor device according to claim 1, including a porous element constructed and arranged such that, in use, molten aluminium poured into the distributor device flows through said porous element.

11. The distributor device according to claim 10, in which the porous element includes a substantially bowl-shaped mesh of woven material that fits into and is supported by said receptacle, the arrangement being such that molten aluminium poured into the distributor device through the inlet opening flows through the mesh of woven material before exiting through said outlet openings.

12. The distributor device according to claim 10, wherein the porous element includes a mesh of coated glass fibres.

13. The distributor device according to claim 10, wherein the porous element includes a support frame that, in use, engages and is supported by the receptacle.

14. An aluminium casting installation including a mould, a delivery device for delivering molten aluminium into the mould and a distributor device according to claim 1, the distributor device being mounted below the delivery device and above the mould, the installation being constructed and arranged such that, in use, molten aluminium is poured from the delivery device into the mould through the distributor device.

15. The aluminium casting installation according to claim 14, wherein the distributor device is positioned so that, during pouring, it is partially immersed in the liquid metal in the mould with said outlet openings below the surface of the liquid metal.

16. A distributor device for use in an aluminium casting operation to direct the flow of molten aluminium into a mould, the distributor device comprising:

a rigid, substantially bowl-shaped receptacle of a refractory material having a base member and a peripheral wall that extends upwards from the base member and includes two side wall members and two end wall members, said receptacle having an inlet opening towards the upper end thereof and at least one outlet opening in each of said end wall members towards the base member, the device being constructed and arranged such that, in use, molten aluminium poured into the distributor device through the inlet opening is redirected by the distributor device and flows outwards into the mould through said outlet openings;

wherein the separation of the side wall members increases towards ends of the side wall members.

17. The distributor device according to claim 16, wherein the side wall members are curved.

18. The distributor device according to claim 16, wherein the base member includes a raised flow deflector.

19. The distributor device according to claim 16, wherein the upper surface of the base member is inclined downwards towards the outlet openings.

20. The distributor device according to claim 16, further comprising a porous element having a substantially bowl-shaped mesh of woven material that fits into and is supported by said receptacle, the arrangement being such that molten aluminium poured into the distributor device through the inlet opening flows through the mesh of woven material before exiting through the outlet openings.

21. A distributor device for use in an aluminium casting operation to direct the flow of molten aluminium into a mould, the distributor device comprising:

a rigid, substantially bowl-shaped receptacle of a refractory material having a base member and a peripheral wall that extends upwards from the base member and includes two side wall members and two end wall members, said receptacle having an inlet opening towards the upper end thereof and at least one outlet opening in each of said end wall members towards the base member, the device being constructed and arranged such that in use, molten aluminium poured into the distributor device through the inlet opening is redirected by the distributor device and flows substantially horizontally outwards into the mould through said outlet openings;

wherein the base member includes a raised flow deflector that is substantially hemispherical with a flat top.

22. The distributor device according to claim 21, wherein the separation of the side wall members increases towards ends of the side wall members.

23. The distributor device according to claim 22, wherein the side wall members are curved.

24. The distributor device according to claim 21, wherein the upper surface of the base member is inclined downwards towards the outlet openings.

25. The distributor device according to claim 21, further comprising a porous element having a substantially bowl-shaped mesh of woven material that fits into and is supported by said receptacle, the arrangement being such that molten aluminium poured into the distributor device through the inlet opening flows through the mesh of woven material before exiting through said outlet openings.

26. The distributor according to claim 21, wherein the raised flow deflector has a radius of curvature in the range 20 mm to 60 mm.

27. The distributor according to claim 26, wherein the raised flow deflector has a radius of curvature of approximately 40 mm.

28. The distributor according to claim 21, wherein the flat top has a diameter in the range 10 mm to 50 mm.

29. The distributor according to claim 28, wherein the flat top has a diameter of approximately 30 mm.