GB1117323A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1117323A – Suppression of visible spangle in the hot dip coating of ferrous metal strip with zinc
– Google Patents

GB1117323A – Suppression of visible spangle in the hot dip coating of ferrous metal strip with zinc
– Google Patents
Suppression of visible spangle in the hot dip coating of ferrous metal strip with zinc

Info

Publication number
GB1117323A

GB1117323A
GB28139/65A
GB2813965A
GB1117323A
GB 1117323 A
GB1117323 A
GB 1117323A
GB 28139/65 A
GB28139/65 A
GB 28139/65A
GB 2813965 A
GB2813965 A
GB 2813965A
GB 1117323 A
GB1117323 A
GB 1117323A
Authority
GB
United Kingdom
Prior art keywords
strip
molten
temperature
coating
salt
Prior art date
1964-07-06
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
GB28139/65A
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.)

Armco Inc

Original Assignee
Armco 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.)
1964-07-06
Filing date
1965-07-02
Publication date
1968-06-19

1965-07-02
Application filed by Armco Inc
filed
Critical
Armco Inc

1968-06-19
Publication of GB1117323A
publication
Critical
patent/GB1117323A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

C—CHEMISTRY; METALLURGY

C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL

C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL

C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor

C23C2/26—After-treatment

C—CHEMISTRY; METALLURGY

C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor

C23C2/50—Controlling or regulating the coating processes

C23C2/52—Controlling or regulating the coating processes with means for measuring or sensing

Abstract

In the hot dip coating of a ferrous metal strip with molten Zn, visible spangle is suppressed by inducing a multitude of closely spaced spangles which are invisible or barely visible to the naked eye by applying to the freshly coated strip, at a point where the temperature of the molten Zn coating on the strip is from just above its solidification temperature to 40 DEG F. there above, a water solution of a reactive inorganic salt which is thermally decomposed on contacting the molten Zn coating, the salt being one which will thermally decompose at a temperature within the range of 175 to 550 DEG F. and release radicals reactive with metallic Zn or a salt which will hydrolize when added to water to form a reactive inorganic salt which is decomposable within the temperature range, the salts and their decomposition products being non-toxic and leaving no harmful, difficulty removable residues on the coated strip. Specified inorganic salts which decompose at 175 to 550 DEG F. are dibasic ammonium phosphate, NaHCO3, sodium dihydrogen orthophosphate, ammonium borate, ammonium molybdate and ammonium sulphate. Hydrolyzable salts which may be used are sodium carbonate and trisodium phosphate. The Fig. shows solution containing a reactive inorganic salt being sprayed on Zn coated strip 13a from spray heads 18 extending entirely transversely across the strip. The height of the spray heads 18 above a molten Zn bath 11 is automatically adjusted such that the metal coating is molten as enters the spray but solid as it leaves. A radiation pyrometer measures the strip temperature and by a signal to an electronic device 20 controls an electric hoist motor which raises or lowers the spray head and pyrometer.

GB28139/65A
1964-07-06
1965-07-02
Suppression of visible spangle in the hot dip coating of ferrous metal strip with zinc

Expired

GB1117323A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US380533A

US3379557A
(en)

1964-07-06
1964-07-06
Suppression of visible spangle

Publications (1)

Publication Number
Publication Date

GB1117323A
true

GB1117323A
(en)

1968-06-19

Family
ID=23501539
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB28139/65A
Expired

GB1117323A
(en)

1964-07-06
1965-07-02
Suppression of visible spangle in the hot dip coating of ferrous metal strip with zinc

Country Status (4)

Country
Link

US
(1)

US3379557A
(en)

AT
(1)

AT268817B
(en)

DE
(1)

DE1521109C3
(en)

GB
(1)

GB1117323A
(en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

FR1481120A
(en)

1966-03-09
1967-05-19
Chiers Hauts Fourneaux

Improvement in the process and the installations of hot galvanizing by immersion in a liquid metal bath of various steel materials

FR2566432A1
(en)

1984-06-22
1985-12-27
Usinor

METHOD AND DEVICE FOR OPTIMIZING IN A METHOD FOR REDUCING THE DIMENSION OF THE FLOWERING OF A GALVANIZED STEEL STRIP

BE1014525A3
(en)

2001-12-04
2003-12-02
Ct Rech Metallurgiques Asbl
Coating process for metal surface.

BRPI0519664A2
(en)

2004-12-28
2009-03-03
Posco

galvanized steel plate without zinc flowers, its production method and equipment used for such production

CA2902066C
(en)

2013-03-06
2018-01-02
Quaker Chemical Corporation
High temperature conversion coating on steel and iron substrates

Family Cites Families (3)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US2126244A
(en)

1935-12-13
1938-08-09
Wheeling Steel Corp
Metal coated product

US2764808A
(en)

1949-06-04
1956-10-02
Robertson Co H H
Method of producing a protected metal article

US2950991A
(en)

1959-04-30
1960-08-30
American Chain & Cable Co
Method and apparatus for coating ferrous metal with aluminum

1964

1964-07-06
US
US380533A
patent/US3379557A/en
not_active
Expired – Lifetime

1965

1965-07-02
GB
GB28139/65A
patent/GB1117323A/en
not_active
Expired

1965-07-03
DE
DE1521109A
patent/DE1521109C3/en
not_active
Expired

1965-07-06
AT
AT612365A
patent/AT268817B/en
active

Also Published As

Publication number
Publication date

US3379557A
(en)

1968-04-23

DE1521109A1
(en)

1969-08-07

AT268817B
(en)

1969-02-25

DE1521109C3
(en)

1974-03-07

DE1521109B2
(en)

1973-07-19

Información de contacto