Molten metal sampler

Patent metadata

Field	Value
Publication number	US-11117127-B2
Application number	US-201916434850-A
Country	US
Kind code	B2
Filing date	Jun 7, 2019
Priority date	Jun 12, 2018
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

The present invention relates to a sampler for taking samples from a molten metal bath, particularly a molten iron, the sampler comprising:
a carrier tube having an immersion end; and a sample chamber assembly arranged on the immersion end of the carrier tube, the sample chamber assembly comprising a cover plate and a housing, wherein the housing comprises: an immersion end having a first opening for an inflow conduit and an opposing end having a second opening for a gas coupler, a first face extending between the immersion end and the opposing end, the first face having a first depression proximate the immersion end and a second depression, the first depression being an analysis zone and the second depression being a ventilation zone, a portion of the analysis zone overlying a distribution zone which is in direct flow communication with the first opening and configured to receive the molten steel from the inflow conduit, wherein the first depression having a cross sectional circle segment profile along a central longitudinal axis that is concavely or triangularly shaped, wherein the cover plate and the housing are configured to be assembled together to form a sample cavity including the distribution zone, the analysis zone and the ventilation zone, such that an analysis surface of a solidified steel sample formed within the sample cavity lies in a first plane, and wherein the first and second openings are spaced apart from the first plane.

The invention also relates to a sampler for taking samples from a molten metal bath, particularly a molten iron.

First claim

The invention claimed is:

1. A sampler for taking samples from a molten metal bath, the sampler comprising:
a carrier tube having an immersion end; and
a sample chamber assembly arranged on the immersion end of the carrier tube, the sample chamber assembly comprising a cover plate and a housing, wherein the housing comprises:
an immersion end having a first opening for an inflow conduit and an opposing end having a second opening for a gas coupler,
a first face extending between the immersion end and the opposing end, the first face having a first depression proximate the immersion end and a second depression, the first depression being an analysis zone and the second depression being a ventilation zone, a portion of the analysis zone overlying a distribution zone which is in direct flow communication with the first opening and configured to receive a molten metal from the inflow conduit,
wherein the first depression has a cross sectional profile perpendicular to a central longitudinal axis thereof, the cross sectional profile being concavely or triangularly shaped,
wherein the cover plate and the housing are configured to be assembled together to form a sample cavity including the distribution zone, the analysis zone and the ventilation zone, such that an analysis surface of a solidified metal sample formed within the sample cavity lies in a first plane, and
wherein the first and second openings are spaced apart from the first plane.

2. The sampler of claim 1 , wherein the second depression has a cross sectional profile perpendicular to a central longitudinal axis thereof, the cross sectional profile being concavely or triangularly shaped, and wherein the depth of the second depression continually increases towards the first depression.

3. The sampler of claim 1 , wherein the first depression has a substantially uniform depth, or an increasing depth towards the second depression or towards the immersion end.

4. The sampler of claim 1 , wherein the sample cavity and the first and second openings are aligned along a common longitudinal axis.

5. The sampler of claim 1 , wherein the analysis zone, the distribution zone and the ventilation zone are structured as a plurality of contiguous segments, each segment having a length to depth ratio, a sum of the length to depth ratios of the plurality of segments being greater than 25.

6. The sampler of claim 1 , wherein the distribution zone, the analysis zone and the ventilation zone are structured as a plurality of contiguous segments, each segment having a length to depth ratio, the length to depth ratios of the segments successively increasing as the distance from the first opening increases.

7. The sampler of claim 1 , wherein there are no increases in a width dimension of at least a portion of the analysis zone in a flow direction of the molten metal which extends from the end of the distribution zone toward the second opening.

8. The sampler of claim 1 , wherein a total length of the analysis zone and the ventilation zone is between 20 and 50 mm.

9. The sampler of claim 1 , wherein a cross-sectional area of the analysis zone gradually tapers in the flow direction of the molten metal, and
wherein a cross-sectional area of the ventilation zone gradually tapers in the flow direction of the molten metal.

10. The sampler of claim 1 , wherein a total length of the analysis zone and the ventilation zone is about 30 mm.

11. The sampler of claim 1 , wherein a cross-sectional area of the analysis zone gradually tapers in the flow direction of the molten metal, or wherein a cross-sectional area of the ventilation zone gradually tapers in the flow direction of the molten metal.

12. The sampler of claim 1 , wherein the second depression has a cross sectional profile perpendicular to a central longitudinal axis thereof, the cross sectional profile being concavely or triangularly shaped, or wherein the depth of the second depression continually increases towards the first depression.

13. The sample of claim 1 , wherein the molten metal is molten steel.

Assignees

• Heraeus Electro Nite Int
• Heraeus Electro Nite Iniernational N V

Inventors

• Doets Jan
• Neyens Guy
• Beyens Dries
• Verhoeven Jean-Paul
• Potargent Arne

Classifications

• B01F33/45 Primary

  Magnetic mixers; Mixers with magnetically driven stirrers · 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

• B01L3/502 Primary

  with fluid transport, e.g. in multi-compartment structures · CPC title

• G01N33/20

  Metals · CPC title

• C21C5/4606

  Lances or injectors · CPC title