GB1350248A - Method and apparatus for the determination of the oxygen content of metal melts - Google Patents

Method and apparatus for the determination of the oxygen content of metal melts

Info

Publication number
GB1350248A
GB1350248A GB3191771A GB3191771A GB1350248A GB 1350248 A GB1350248 A GB 1350248A GB 3191771 A GB3191771 A GB 3191771A GB 3191771 A GB3191771 A GB 3191771A GB 1350248 A GB1350248 A GB 1350248A
Authority
GB
United Kingdom
Prior art keywords
vessels
vessel
lance
melt
oxidizing agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3191771A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SALZGITTER PEINE STAHLWERKE
Original Assignee
SALZGITTER PEINE STAHLWERKE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SALZGITTER PEINE STAHLWERKE filed Critical SALZGITTER PEINE STAHLWERKE
Publication of GB1350248A publication Critical patent/GB1350248A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
    • G01N25/48—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
    • G01N25/04—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of melting point; of freezing point; of softening point

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

1350248 Thermal analysis apparatus STAHLWERKE PEINE-SALZGITTER AG 7 July 1971 [7 July 1970] 31917/71 Heading G1N Apparatus for determining oxygen and carbon concentration in molten steel comprises a pair of sampling vessels 15, each having inlet openings 16, 17 covered by a thin metal foil 35, and being attached to a tubular lance 5 by brackets 13, 14, each vessel having a thermocouple 9 with a junction 10 housed in a quartz V-tube 11 secured to a refractory tube 12 attached to the lance, the junction spaced from the side walls and bottom of the vessel and thermocouple leads 7, 8 extending through the bore of the lance to a measuring or indicating instrument 19. One of the sampling vessels containing de-oxidizing agent e.g. aluminium and the other vessel being free of any de-oxidizing agent. A gas bubble deflector 18 is mounted on the lance. In use the vessels are immersed in a melt, the metal foils 35 melting upon immersion so that the vessels are filled with molten metal and are then lifted from the melt and allowed to cool. During cooling the temperatures of the two vessels are measured and the difference in the freezing points of the two samples represents the oxygen concentration in the melt, Fig. 7 (not shown) e.g. a difference of 5À2‹C. represents 0À073 per cent. To determine carbon concentration, the measured freezing point of the sample in which the oxygen is combined with the de-oxidizing agent (the 'killed' sample) is first compensated for the effect of elements known to be present and in known concentrations. The compensated freezing point is then representative of carbon concentration e.g. 1532‹C for steel represents 0À041 per cent carbon. Alternative embodiments of the sampling vessel are described in Figs. 3 to 6 (not shown).
GB3191771A 1970-07-07 1971-07-07 Method and apparatus for the determination of the oxygen content of metal melts Expired GB1350248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702033574 DE2033574B2 (en) 1970-07-07 1970-07-07 Method and device for the rapid determination of the oxygen and carbon content of metal, in particular molten steel

Publications (1)

Publication Number Publication Date
GB1350248A true GB1350248A (en) 1974-04-18

Family

ID=5776005

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3191771A Expired GB1350248A (en) 1970-07-07 1971-07-07 Method and apparatus for the determination of the oxygen content of metal melts

Country Status (7)

Country Link
AT (1) AT319639B (en)
BE (1) BE769643A (en)
DE (1) DE2033574B2 (en)
FR (1) FR2098072A5 (en)
GB (1) GB1350248A (en)
LU (1) LU63469A1 (en)
NL (1) NL7109393A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU627323B2 (en) * 1989-06-14 1992-08-20 Heraeus Electro-Nite International N.V. Apparatus for determining phase transitions by means of a sample taken from a metal melt
GB2283325A (en) * 1993-10-15 1995-05-03 Nippon Sublance Probe Engineer Thermal analysis of molten cast iron
WO2007104779A2 (en) * 2006-03-16 2007-09-20 Inergy Automotive Systems Research (Société Anonyme) Method for checking the composition of an ammonia precursor solution
EP2824449A1 (en) * 2013-07-12 2015-01-14 SinterCast AB A sampling device for thermal analysis
CN107543628A (en) * 2017-07-10 2018-01-05 杭州亿泰自控设备有限公司 The replaceable thermocouple of on-line operation for sulphur-furnace thermometric

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473177B1 (en) * 1980-01-04 1985-06-21 Kawaso Electric Ind Co DEVICE FOR DETERMINING THE CARBON CONTENT OF A FUSED METAL

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU627323B2 (en) * 1989-06-14 1992-08-20 Heraeus Electro-Nite International N.V. Apparatus for determining phase transitions by means of a sample taken from a metal melt
GB2283325A (en) * 1993-10-15 1995-05-03 Nippon Sublance Probe Engineer Thermal analysis of molten cast iron
GB2283325B (en) * 1993-10-15 1997-10-15 Nippon Sublance Probe Engineer Methods for inspecting the content of structure modyfying additives in molten cast iron and chilling tendency of flaky graphite cast iron
WO2007104779A2 (en) * 2006-03-16 2007-09-20 Inergy Automotive Systems Research (Société Anonyme) Method for checking the composition of an ammonia precursor solution
WO2007104779A3 (en) * 2006-03-16 2007-11-29 Inergy Automotive Systems Res Method for checking the composition of an ammonia precursor solution
EP2824449A1 (en) * 2013-07-12 2015-01-14 SinterCast AB A sampling device for thermal analysis
US9188513B2 (en) 2013-07-12 2015-11-17 Sintercast Ab Sampling device for thermal analysis
CN107543628A (en) * 2017-07-10 2018-01-05 杭州亿泰自控设备有限公司 The replaceable thermocouple of on-line operation for sulphur-furnace thermometric

Also Published As

Publication number Publication date
DE2033574B2 (en) 1974-01-03
NL7109393A (en) 1972-01-11
FR2098072A5 (en) 1972-03-03
LU63469A1 (en) 1971-11-12
DE2033574A1 (en) 1972-01-13
AT319639B (en) 1974-12-27
BE769643A (en) 1971-11-16

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees