US1671627A - Cleaning and pickling of metals - Google Patents
Cleaning and pickling of metals Download PDFInfo
- Publication number
- US1671627A US1671627A US169672A US16967227A US1671627A US 1671627 A US1671627 A US 1671627A US 169672 A US169672 A US 169672A US 16967227 A US16967227 A US 16967227A US 1671627 A US1671627 A US 1671627A
- Authority
- US
- United States
- Prior art keywords
- pickling
- cleaning
- metals
- acid
- bath
- 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 - Lifetime
Links
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
- 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
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
- C23G1/065—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors sulfur-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
' The agents which ma cleaning or pickling bat according tothe' ponds D. Em oram invention relates tothe cleaning and i f pickling-ofmetals, and articularly to the pickling .ofriron or rstee to remove scale 7 therefrom, although the invention is of more .or less general application to the cleanin -or pickling of metals such as iron or stee i for the removal of oxides or scale therefrom. i The pickling or cleaning of iron or steel is commonly effected by means of acid picklin or cleaning baths which remove the :sca e or oxide from the metal. The pickling "-baths commonly "employed are acid baths which often attack the metal-as wellas the scale. This action on the metal is undesira-fg ble and objectionable, involving not only ex cessive consumption of acids, but also corrofsion or dissolving of metal and tending g-tO give a ;r0ugh or pitted surface arm comm; *mconromrnn, or toms-n;
' a in moi mimics I anon/r0 a r.
i *ilnstead it 8: using acid sulfate baths. I
-' The amount of th for carrying outgthe el operation can {be varie i-Infgeneral vp r'c t qi lmfherea e Z a 31 18, 'forflgi mpl V quired, for 'example,- a;small naction of one *The resent invention provides" proved ath for pickling or cleaning metal -;.--?and also an improved process of pickling or cleaning the metal in which the acid pick-fig spling bath has incorporated therein asmall" -amount of inhibiting mercapto ,and particularly a amercapto thiazole. 5 -2 v to (is and, articularly a mergapto tliiazole prevents or retards or inhibits-tlie fitta'cwbf the acid I have found that the addition of a sm amount of suitable ii e P 1 y a pickllng bath on'the metal iwithout'interfer-" 'jther i til Fthe in mg with the removal of scale or oxide by the acid bath.
present invention,'include various .mercapto g it mentioned are used such as are commonly employed iol'i pickhng or cleani iron and steel, sp mming example aout ten percent1ofj sulf uriacid be added to the I:
.s without interfering scale or 'oiide n v .a 18 also als'avm mt e an; as ell asi; y
thej
a are ski n theipr a vmna! f ponroaarron cor-saw am i i p-' time acid bathgother acid baths can hewused including a such apw thiaz le added t ,the bath ssma'll amount'of a suitable compoundJ-is re- 1. A non-oxidizing mineral acid bath for cleaning or pickling metals which comprises a small amount of a mercaptothiazole.
2. A non-oxidizing mineral acid bath for 5 cleaning or pickling metals which comprises a small amount of a mercaptobenzothiazole.
3. A bath for cleaning or pickling metals comprising sulfuric acid and a small amount of a thiazolc.
4. A bath for cleaning or pickling iron or steel comprising sulfuric acid and a small amount of a mercaptothiazole.
5. A bath for pickling or cleaning metals comprising sulfuric acid and a small amount of a mercaptobenzothiazole.
In testimony whereof I affix my signature.
GEORGE D. CHAMBERLAIN.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US169672A US1671627A (en) | 1927-02-19 | 1927-02-19 | Cleaning and pickling of metals |
| FR654798D FR654798A (en) | 1927-02-19 | 1928-05-24 | Improvements in metal cleaning and pickling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US169672A US1671627A (en) | 1927-02-19 | 1927-02-19 | Cleaning and pickling of metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1671627A true US1671627A (en) | 1928-05-29 |
Family
ID=22616682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US169672A Expired - Lifetime US1671627A (en) | 1927-02-19 | 1927-02-19 | Cleaning and pickling of metals |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1671627A (en) |
| FR (1) | FR654798A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2547193A (en) * | 1949-04-13 | 1951-04-03 | Monsanto Chemicals | Pickling of metals |
| US3335085A (en) * | 1964-04-08 | 1967-08-08 | Calgon Corp | Inhibiting corrosion by acids |
-
1927
- 1927-02-19 US US169672A patent/US1671627A/en not_active Expired - Lifetime
-
1928
- 1928-05-24 FR FR654798D patent/FR654798A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2547193A (en) * | 1949-04-13 | 1951-04-03 | Monsanto Chemicals | Pickling of metals |
| US3335085A (en) * | 1964-04-08 | 1967-08-08 | Calgon Corp | Inhibiting corrosion by acids |
Also Published As
| Publication number | Publication date |
|---|---|
| FR654798A (en) | 1929-04-10 |
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