Molten metal samplers for high and low oxygen applications

Patent metadata

Field	Value
Publication number	US-2023168158-A1
Application number	US-202318160436-A
Country	US
Kind code	A1
Filing date	Jan 27, 2023
Priority date	Jun 12, 2018
Publication date	Jun 1, 2023
Grant date	—

Abstract

A sampler for taking samples from a molten metal bath includes a carrier tube having an immersion end; sample chamber assembly comprising a cover plate and a housing, wherein the housing comprises an immersion end having an opening; an inflow conduit having a first end for receiving molten metal and a second end, opposite the first end, wherein the second end is in communication with the opening, and the opening is configured to receive the molten metal from the inflow conduit; a measuring head, wherein the sample chamber and the second end of the inflow conduit are at least partly arranged in the measuring head; and a metal bushing, wherein the metal bushing coupling the inflow conduit to the sample chamber.

First claim

What is claimed is:

1 . A sampler for taking samples from a molten metal bath, the sampler comprising:
a carrier tube having an immersion end; sample chamber assembly comprising a cover plate and a housing, wherein the housing comprises an immersion end having an opening; an inflow conduit having a first end for receiving molten metal and a second end, opposite the first end, wherein the second end is in communication with the opening, and the opening is configured to receive the molten metal from the inflow conduit; a measuring head, wherein the sample chamber and the second end of the inflow conduit are at least partly arranged in the measuring head; and a metal bushing, wherein the metal bushing coupling the inflow conduit to the sample chamber.

2 . The sampler of claim 1 , wherein the molten metal bath is a molten steel bath.

3 . The sampler of claim 1 , wherein the metal bushing is adapted to reach from the sample chamber assembly to the first end of the inflow conduit.

4 . The sampler of claim 3 , wherein the metal bushing has at least two different wall thicknesses and/or diameters along its length.

5 . The sampler of claim 1 , wherein the metal bushing has at least two different wall thicknesses and/or diameters along its length.

6 . The sampler of claim 1 , wherein the metal bushing comprises an aluminum material.

7 . The sampler of claim 6 , wherein the inflow conduit comprises a quartz material.

8 . The sampler of claim 7 , wherein the quartz material is a fused quartz material.

9 . The sampler of claim 1 , wherein the inflow conduit comprises a quartz material.

10 . The sampler of claim 9 , wherein the quartz material is a fused quartz material.

11 . The sampler of claim 1 , wherein the metal bushing has a length of 10 to 40 mm, an inner diameter of 4 mm, and an outer diameter of 6 mm.

12 . The sampler of claim 1 , wherein the metal bushing is pressed into the sample chamber for coupling the inflow conduit to the sample chamber.

13 . The sampler of claim 1 , wherein the sampler comprises a protection cap attached to the first end of the inflow conduit.

14 . The sampler of claim 1 , wherein the bushing comprises grooves on an outer surface of the bushing to minimize heat transfer to the sample chamber assembly.

Assignees

• Heraeus Electro Nite Int

Inventors

• Doets Jan
• Neyens Guy
• Vaes Hilaire
• Mingneau Frank
• Beyens Dries

Classifications

• G01N33/2028

  Metallic constituents · CPC title

• G01N1/2035

  by deviating part of a fluid stream, e.g. by drawing-off or tapping · CPC title

• G01N2001/1031

  Sampling from special places · CPC title

• G01N1/10 Primary

  in the liquid or fluent state {(burettes, pipettes B01L3/02; sampling of ground water E02D1/06; metering by volume of fluids or fluent solid material G01F11/00, G01F13/00)} · CPC title

• G01N1/125 Primary

  adapted for sampling molten metals · CPC title