GB860709A - A new or improved method of pickling alloy steels - Google Patents

A new or improved method of pickling alloy steels

Info

Publication number
GB860709A
GB860709A GB21990/59A GB2199059A GB860709A GB 860709 A GB860709 A GB 860709A GB 21990/59 A GB21990/59 A GB 21990/59A GB 2199059 A GB2199059 A GB 2199059A GB 860709 A GB860709 A GB 860709A
Authority
GB
United Kingdom
Prior art keywords
scale
salts
new
pickling
improved method
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
GB21990/59A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB860709A publication Critical patent/GB860709A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • C25F1/02—Pickling; Descaling
    • C25F1/04—Pickling; Descaling in solution
    • C25F1/06—Iron or steel
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/08—Iron or steel

Abstract

Alloy steel surfaces are cleaned and freed from scale by pickling electrolytically using as electrolyte a solution of neutral salts of mineral acids, and then a brief immersion in a strong mineral acid to remove the loosened scale. Preferably Na2So4 is used, but other salts of Na, K, or NH4 preferably giving a pH between 1 and 7 are usable. Small amounts of sodium fluoride or per-salts may be added to aid the formation of per-oxydisulphate which loosens the scale and passivates the surface. The final non-electrolytic treatment with mineral acid is effected for about 25 secs. at 40 DEG C. using H2So4, HNO3 or a mixture of HF and HNO3.
GB21990/59A 1958-12-23 1959-06-26 A new or improved method of pickling alloy steels Expired GB860709A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT860709X 1958-12-23

Publications (1)

Publication Number Publication Date
GB860709A true GB860709A (en) 1961-02-08

Family

ID=3682345

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21990/59A Expired GB860709A (en) 1958-12-23 1959-06-26 A new or improved method of pickling alloy steels

Country Status (4)

Country Link
US (1) US3043758A (en)
DE (1) DE1161740B (en)
FR (1) FR1226856A (en)
GB (1) GB860709A (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1082410A (en) * 1963-12-26 1967-09-06 Mitsubishi Heavy Ind Ltd An electrolytic descaling method
US3429792A (en) * 1965-07-30 1969-02-25 Mitsubishi Heavy Ind Ltd Method of electrolytically descaling and pickling steel
US3666667A (en) * 1969-04-14 1972-05-30 Enthone Alkaline cyanide-free aqueous descaling composition containing elemental sulfur
US3627653A (en) * 1970-01-16 1971-12-14 B R H Ind Method for cleaning metal and metal parts to remove corrosion therefrom
US4026777A (en) * 1976-04-01 1977-05-31 Allegheny Ludlum Industries, Inc. Metallic descaling system
US4066521A (en) * 1977-02-09 1978-01-03 Allegheny Ludlum Industries, Inc. Metallic descaling system
GB1520705A (en) * 1976-04-01 1978-08-09 Allegheny Ludlum Ind Inc Electrolytic descaling of metals
US4012299A (en) * 1976-04-01 1977-03-15 Allegheny Ludlum Industries, Inc. Metallic descaling system
JPS5347336A (en) * 1976-10-12 1978-04-27 Kogyo Gijutsuin Method descaling band steel by electrolysis
US4123337A (en) * 1977-11-02 1978-10-31 Armco Steel Corporation Method of improving the surface insulation resistance of electrical steels having an insulative coating thereon
JPS5548422A (en) * 1978-09-21 1980-04-07 Sumitomo Metal Ind Ltd Electrolytic descaling method by indirect electrification system of steel wire rod and its device
JPS5542186A (en) * 1978-09-21 1980-03-25 Sumitomo Metal Ind Ltd Continuous wire drawing mill of steel wire rods equipped with electrolytic descaler by indirect energization method
US4391685A (en) * 1981-02-26 1983-07-05 Republic Steel Corporation Process for electrolytically pickling steel strip material
US4363709A (en) * 1981-02-27 1982-12-14 Allegheny Ludlum Steel Corporation High current density, acid-free electrolytic descaling process
US4415415A (en) * 1982-11-24 1983-11-15 Allegheny Ludlum Steel Corporation Method of controlling oxide scale formation and descaling thereof from metal articles
US4450058A (en) * 1983-07-29 1984-05-22 Allegheny Ludlum Steel Corporation Method for producing bright stainless steel
AT402737B (en) * 1992-04-29 1997-08-25 Andritz Patentverwaltung Method for discontinuous pickling of metallic plates, in particular made of stainless steel
US7048870B1 (en) * 1993-12-20 2006-05-23 Astrazeneca Ab Metallic implant and process for treating a metallic implant
DE69718589T2 (en) * 1996-04-29 2003-11-20 Ki Won Lee Pickling solution for the descaling of iron-based alloys
AT406486B (en) * 1998-12-22 2000-05-25 Andritz Patentverwaltung METHOD FOR STAINLESSING STAINLESS STEEL
SE523288C2 (en) * 2002-07-19 2004-04-06 Astra Tech Ab An implant and a method of treating an implant surface
SE523236C2 (en) * 2002-07-19 2004-04-06 Astra Tech Ab An implant and a method of treating an implant surface
PL2761063T3 (en) * 2011-09-26 2017-03-31 Ak Steel Properties, Inc. Stainless steel pickling in an oxidizing, electrolytic acid bath
CN102677140A (en) * 2012-05-04 2012-09-19 大连理工大学 Process for cleaning surfaces of stainless steel castings
DE102014111779A1 (en) * 2014-08-18 2016-02-18 Iva Industrieöfen Gmbh Process for producing a retort for a nitriding furnace and retort
CN113788520A (en) * 2021-10-08 2021-12-14 北京首钢吉泰安新材料有限公司 Iron-chromium-aluminum pickling process, wastewater treatment method and wastewater treatment device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191203374A (en) * 1912-02-10 1912-07-11 Charles Herbert Thompson Improvements in and relating to Cleaning Metallic Surfaces.
US1098338A (en) * 1913-05-20 1914-05-26 Charles Herbert Thompson Cleaning metal surfaces.
US1542451A (en) * 1925-01-19 1925-06-16 United Alloy Steel Corp Pickling steel sheets
US1657228A (en) * 1926-06-02 1928-01-24 Allegheny Steel Co Method of picking chromium-iron alloys
US1859734A (en) * 1928-12-21 1932-05-24 Electro Metallurg Co Method of removing oxide coatings from metals
US1899734A (en) * 1930-01-18 1933-02-28 American Sheet & Tin Plate Removal of oxids from ferrous metal
US2244423A (en) * 1938-06-28 1941-06-03 Hanson Van Winkle Munning Co Apparatus for strip plating
BE438799A (en) * 1939-05-24
US2347742A (en) * 1939-09-18 1944-05-02 Rustless Iron & Steel Corp Pickling process
US2327676A (en) * 1940-01-09 1943-08-24 Repel Corp Du Plating process
US2337062A (en) * 1942-04-07 1943-12-21 Solar Aircraft Co Pickling solution and method
GB576698A (en) * 1944-04-01 1946-04-16 Rylands Brothers Ltd Improvements in or relating to the electro-chemical surface cleaning of metal articles
BE482434A (en) * 1947-06-06
US2893544A (en) * 1953-11-12 1959-07-07 Kenneth F Russell Apparatus for drawing wire

Also Published As

Publication number Publication date
US3043758A (en) 1962-07-10
DE1161740B (en) 1964-01-23
FR1226856A (en) 1960-08-16

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