GB1300344A – Method of decarburizing steels
– Google Patents
GB1300344A – Method of decarburizing steels
– Google Patents
Method of decarburizing steels
Info
Publication number
GB1300344A
GB1300344A
GB23629/71A
GB2362971A
GB1300344A
GB 1300344 A
GB1300344 A
GB 1300344A
GB 23629/71 A
GB23629/71 A
GB 23629/71A
GB 2362971 A
GB2362971 A
GB 2362971A
GB 1300344 A
GB1300344 A
GB 1300344A
Authority
GB
United Kingdom
Prior art keywords
flow rate
conversion efficiency
oxidant
steel
decarburization
Prior art date
1970-03-02
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
GB23629/71A
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.)
Sunbeam Oster Co Inc
Original Assignee
Allegheny Ludlum Industries Inc
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.)
1970-03-02
Filing date
1971-04-19
Publication date
1972-12-20
1971-04-19
Application filed by Allegheny Ludlum Industries Inc
filed
Critical
Allegheny Ludlum Industries Inc
1972-12-20
Publication of GB1300344A
publication
Critical
patent/GB1300344A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C21—METALLURGY OF IRON
C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 – C21C5/00
C21C7/10—Handling in a vacuum
C—CHEMISTRY; METALLURGY
C21—METALLURGY OF IRON
C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 – C21C5/00
C21C7/04—Removing impurities by adding a treating agent
C21C7/068—Decarburising
C21C7/0685—Decarburising of stainless steel
Abstract
1300344 Purifying steel ALLEGHENY LUDLUM INDUSTRIES Inc 19 April 1971 [2 March 1970] 23629/71 Heading C7D In the dynamically balanced decarburization of molten steel, the vessel containing the steel is flushed with a diluent gas (e.g. Ar), gaseous oxidant is introduced into the vessel to initiate decarburization, the flow rate of the input gases and the composition of the effluent gases are measured to determine the rate of carbon removal and the oxidizer conversion efficiency for that flow rate, the oxidant flow rate is then increased in predetermined amounts with alternate calculation of oxidizer conversion efficiency until the flow rate is maximized for a conversion efficiency above a predetermined value. The diluent gas flow rate may then be decreased in predetermined amounts with gas conversion efficiency calculations so long as the efficiency remains above the required minimum. The oxidant may be introduced by introduced by top blowing or beneath the surface of the melt. Reference is made to the treatment of Cr-containing steels with less slagging of Cr.
GB23629/71A
1970-03-02
1971-04-19
Method of decarburizing steels
Expired
GB1300344A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US1591470A
1970-03-02
1970-03-02
Publications (1)
Publication Number
Publication Date
GB1300344A
true
GB1300344A
(en)
1972-12-20
Family
ID=21774309
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB23629/71A
Expired
GB1300344A
(en)
1970-03-02
1971-04-19
Method of decarburizing steels
Country Status (8)
Country
Link
US
(1)
US3666439A
(en)
AT
(1)
AT323775B
(en)
BE
(1)
BE763595A
(en)
CA
(1)
CA923710A
(en)
DE
(1)
DE2109676A1
(en)
ES
(1)
ES388791A1
(en)
FR
(1)
FR2081633B1
(en)
GB
(1)
GB1300344A
(en)
Families Citing this family (10)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3850617A
(en)
*
1970-04-14
1974-11-26
J Umowski
Refining of stainless steel
LU63512A1
(en)
*
1970-07-24
1971-11-16
DE2114600B2
(en)
*
1971-03-25
1981-05-07
Vacmetal Gesellschaft für Vakuum-Metallurgie mbH, 4600 Dortmund
Process for targeted vacuum decarburization of high-alloy steels
JPS5392319A
(en)
*
1977-01-25
1978-08-14
Nisshin Steel Co Ltd
Method of making ultralowwcarbon stainless steel
JPS5442324A
(en)
*
1977-09-10
1979-04-04
Nisshin Steel Co Ltd
Control procedure of steel making process using mass spectrometer
JPS5442323A
(en)
*
1977-09-10
1979-04-04
Nisshin Steel Co Ltd
Control procedure of steel making process using mass spectormeter
JP2850407B2
(en)
*
1989-04-18
1999-01-27
大同特殊鋼株式会社
Refining method of chromium-containing molten steel
SE9800153D0
(en)
*
1998-01-21
1998-01-21
Hoeganaes Ab
Low pressure process
US6923843B1
(en)
2001-11-13
2005-08-02
Nupro Corporation
Method for oxygen injection in metallurgical process requiring variable oxygen feed rate
CN112680566B
(en)
*
2020-12-18
2022-10-21
北京首钢自动化信息技术有限公司
Refining furnace decarburization end point detection method and system
1970
1970-03-02
US
US15914A
patent/US3666439A/en
not_active
Expired – Lifetime
1971
1971-02-25
CA
CA106233A
patent/CA923710A/en
not_active
Expired
1971-03-01
BE
BE763595A
patent/BE763595A/en
unknown
1971-03-01
DE
DE19712109676
patent/DE2109676A1/en
active
Pending
1971-03-01
AT
AT171171A
patent/AT323775B/en
active
1971-03-02
FR
FR7107152A
patent/FR2081633B1/fr
not_active
Expired
1971-03-02
ES
ES388791A
patent/ES388791A1/en
not_active
Expired
1971-04-19
GB
GB23629/71A
patent/GB1300344A/en
not_active
Expired
Also Published As
Publication number
Publication date
FR2081633B1
(en)
1974-09-27
DE2109676A1
(en)
1971-09-16
BE763595A
(en)
1971-08-02
CA923710A
(en)
1973-04-03
US3666439A
(en)
1972-05-30
ES388791A1
(en)
1973-05-16
FR2081633A1
(en)
1971-12-10
AT323775B
(en)
1975-07-25
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(en)
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US3982927A
(en)
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Method of blowing to obtain a very low amount of carbon in chrome steels
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(en)
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(en)
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Method of protecting tuyeres for upwardly blowing pure oxygen through the bottom of steel converters
Legal Events
Date
Code
Title
Description
1973-05-16
PS
Patent sealed [section 19, patents act 1949]
1975-11-19
PLNP
Patent lapsed through nonpayment of renewal fees
