Device and method for determining the microstructure of a metal product, and metallurgical installation

Patent metadata

Field	Value
Publication number	US-11249037-B2
Application number	US-201716304626-A
Country	US
Kind code	B2
Filing date	May 24, 2017
Priority date	May 25, 2016
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

A device for determining the microstructure of a metal product during metallurgical production of the metal product, the device having at least one X-ray source, at least one X-ray detector and at least one accommodating chamber, inside which the X-ray source and/or the X-ray detector is/are arranged and which has at least one window which is transparent to X-ray radiation. To allow reliable determination of the microstructure of a metal product during the metallurgical production thereof, the device includes at least one cooling installation for actively cooling the accommodating chamber.

First claim

The invention claimed is:

1. A device for determining a microstructure of a metal product during a metallurgical production of the metal product, said device comprising: at least one x-ray source; at least one x-ray detector; at least one receptacle chamber, the x-ray source and/or the x-ray detector being disposed within said receptacle chamber, and said receptacle chamber having at least one window that is permeable to x-ray radiation; at least one cooling installation for actively cooling the receptacle chamber, wherein the cooling installation includes at least one supply installation for supplying at least one cooling medium to the receptacle chamber, wherein the receptacle chamber is connected so as to communicate with the supply installation, wherein the cooling installation further includes at least one regulating installation which has at least one sensor and at least one regulating electronics unit that is connected to the at least one sensor, wherein the regulating electronics unit is configured to actuate the at least one supply installation in response to signals of the at least one sensor, wherein the cooling installation has a housing and the regulating electronics unit is configured to actuate the at least one supply installation so that a temperature of an external face and/or an internal face of the housing lies above a dew point temperature of an atmosphere within and/or outside the housing, wherein the window is configured to reflect or absorb incident infrared radiation on the window from outside of the receptacle chamber so that less than 50% of the incident infrared radiation on the window passes through to the receptacle chamber, wherein the housing is configured as at least a double wall structure having mutually spaced apart walls.

2. The device according to claim 1 , wherein the cooling installation includes at least one heat exchanger disposed in the receptacle chamber, wherein the at least one supply installation supplies at least one cooling medium to the heat exchanger, wherein the heat exchanger is connected so as to communicate with the supply installation.

3. The device according to claim 1 , wherein the housing partially encloses the receptacle chamber and has at least one opening which is closed by the window, wherein the at least one supply installation supplies at least one cooling medium to the housing, wherein at least one intermediate space between walls that are disposed so as to be directly neighboring is connected so as to communicate with the supply installation.

4. The device according to claim 1 , wherein the cooling medium is at least partially liquid and/or gaseous.

5. The device according to claim 1 , wherein the at least one sensor is a temperature sensor disposed in the receptacle chamber, and/or a temperature sensor that measures a temperature of the supplied cooling medium, and/or a temperature sensor that measures a temperature of the discharged cooling medium, and/or a flow sensor that measures a volumetric flow of the supplied cooling medium, and/or a pressure sensor that measures a pressure of the supplied cooling medium, and/or a flow sensor that measures a volumetric flow of the discharged cooling medium, and/or a pressure sensor that measures a pressure of the discharged cooling medium.

6. The device according to claim 1 , further comprising at least one installation for drying and/or purifying the supplied cooling medium.

7. The device according to claim 1 , wherein the window is formed from a polyamide film, at least one metal foil, glass, or ceramics, or a combination of said materials.

8. The device according to claim 1 , wherein the window is formed largely from lightweight elements.

9. The device according to claim 1 , further comprising at least one motion installation connected to the x-ray source and/or the x-ray detector, by way of which motion installation the x-ray source and/or the x-ray detector are/is movable relative to the metal product.

10. The device according to claim 1 , further comprising at least one rinsing installation connected so as to communicate with the receptacle chamber and by way of which the receptacle chamber is rinsed with at least one rinsing medium.

11. The device according to claim 10 , wherein the rinsing medium is at least partially liquid and/or gaseous.

12. A metallurgical plant for producing a metal product, comprising: at least one plant electronics unit for controlling and/or regulating an operation of at least one plant component, the electronics unit being configured to carry out at least one metallurgical process step; and at least one device according to claim 1 connected to the plant electronics unit, wherein the plant electronics unit is configured to determine a microstructure of the metal product from signals of the device, and to control and/or regulate the plant component while taking into account the determined microstructure.

Assignees

• Sms Group Gmbh

Inventors

• Biglari Mostafa
• Sommers Ulrich
• Klinkenberg Christian
• Renard Michel
• Raymond Guy
• Pensis Oliver
• Terlau Tobias
• Krauthäuser Horst

Classifications

• G01N2223/308

  support of radiation source · CPC title

• C21D11/00

  Process control or regulation for heat treatments · CPC title

• G01N2223/6462

  microdefects · CPC title

• G01N33/204

  Structure thereof, e.g. crystal structure · CPC title

• G01N2223/624

  steel, castings · CPC title