Molten metal controlled flow launder

Patent metadata

Field	Value
Publication number	US-2020360989-A1
Application number	US-202016877267-A
Country	US
Kind code	A1
Filing date	May 18, 2020
Priority date	May 17, 2019
Publication date	Nov 19, 2020
Grant date	—

Abstract

A launder for use in moving molten metal includes at least one relatively narrow channel through which molten metal flows. Using a narrow, rather than broad, channel permits better control of the flow and helps prevent overflowing the launder or a structure adjacent the launder. A molten metal pumping or transfer system may utilize a launder as disclosed herein.

First claim

What is claimed is:

1 . A launder for use in moving molten metal, the launder comprising:
(a) graphite or ceramic; (b) a channel configured to transfer molten metal, the channel having an upper cross-sectional area and a lower cross-sectional area, the lower cross-sectional area being smaller than the upper cross-sectional area.

2 . The launder of claim 1 , wherein the channel is V-shaped.

3 . The launder of claim 1 , wherein the channel is U-shaped.

4 . The launder of claim 1 that is comprised of ceramic.

5 . The launder of claim 1 , wherein the channel is centered in the launder.

6 . The launder of claim 1 , wherein the top of the channel has a channel width and top of launder has a launder width, and the channel width is 50% or more of the launder width.

7 . The launder of claim 1 , wherein the top of the channel has a channel width and top of launder has a launder width, and the channel width is 50% or less of the launder width.

8 . The launder of claim 1 that comprises a plurality of channels.

9 . The launder of claim 8 , wherein each of the plurality of channels is V-shaped.

10 . The launder of claim 1 that further includes a launder height and a channel height and the channel height is 50% or more of the launder height.

11 . The launder of claim 1 that further includes a launder height and a channel height and the channel height is 50% or less of the launder height.

12 . The launder of claim 2 , wherein each side of the V-shaped channel is formed at an angle of 30 degrees-60 degrees from the horizontal axis.

13 . The launder of claim 2 , wherein each side of the V-shaped channel is formed at an angle of 45 degrees from the horizontal axis.

14 . A molten metal pump transfer system including the launder of claim 1 .

15 . The launder of claim 1 that further comprises a grate in the channel, wherein the grate is configured to filter solid pieces from molten metal.

Assignees

• Molten Metal Equipment Innovations Llc

Inventors

• Cooper Paul V

Classifications

• F04D7/065

  for liquid metal · CPC title

• F27B3/045

  Multiple chambers, e.g. one of which is used for charging · CPC title

• B22D35/04

  into moulds, e.g. base plates, runners · CPC title

• F27D2003/0054

  Means to move molten metal, e.g. electromagnetic pump · CPC title

• B22D41/00 Primary

  Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like (B22D39/00, B22D43/00 take precedence) · CPC title