US1379998A - Preparing ferric articles for metallic baths - Google Patents
Preparing ferric articles for metallic baths Download PDFInfo
- Publication number
- US1379998A US1379998A US423443A US42344320A US1379998A US 1379998 A US1379998 A US 1379998A US 423443 A US423443 A US 423443A US 42344320 A US42344320 A US 42344320A US 1379998 A US1379998 A US 1379998A
- Authority
- US
- United States
- Prior art keywords
- articles
- mercury
- lead
- bath
- preparing ferric
- 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
- 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
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/10—Lead or alloys based thereon
Definitions
- T 0 all whomit may concern Be it known that I, JAMEs lliVIADDY, a citizen of the United States, residing at 610 ⁇ Vest 116th street, New York, county of New York, and State of New York, have invented certain new and useful Improvements in Preparing Ferric Articles for Metallic Baths, fully described and represented in the following specification and the accom-, panying drawings, forming a part of the same. i
- the present invention relates to a means of protecting articles ofiron or-steel from corrosion by air, water, or acid fumes.
- Ferric articles of sheet-iron or steel-plate have often been dippedin molten lead to form a preservative coating thereon; but it is found that the protection afforded by such coating is far from perfect, as pin-holes or interstices are formed in the coating during the dipping operation through which, whenceptto use, the atmosphereigradually gains access to the surface of the article and causes its corrosion.
- the .present invention prevents the formation f such defective coating when dipping in the lead bath, byfirst electro-plating a film of mercury upon the surface of the ar ticle, which mercury forms an amalgam with the iron or steel surface and covers it so thoroughly that the affinity of the lead.- for the amalgam enables the lead to adhere strongly to the article and form a continuous coatingand effective protection therefor.
- the solution from which the mercury is electrically deposited upon thearticle should be an alkaline solution of mercury, Which 'may' be prepared in the proportion of 100 cubic centimeters of Water, one per cent. of cyanid of potassium, or other alkali; and from one to two per cent. of. mercuric cyanid.
- the article is first thoroughly cleaned, as by a blast of steel grit "orin an acid bath,'and is then electro-plated Withmercury from the s0lution described.
- the article When the film of mercury is deposited over the entire surface of the article, the article is immersed in the molten lead bath and the lead coating formed thereon.
- an alkalinesolution of the mercury is employed which has no such effect upon the articles, and does not interfere with the uniform deposit of the mercury by an electroplating process.
- the method of securing an effective continuous adhesion of lead coating to iron or steel articles in a molten bath which consistsin electro-platin a film of mercury upon the surface of the article before dipping the article in the molten bath.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating With Molten Metal (AREA)
Description
rare
mil Ins 3.. MADDY, or new Yonx, n. Y-
' PREPARING FERRIG ARTICLES FOB METALLIC BATES.
No Drawing.
T 0 all whomit may concern Be it known that I, JAMEs lliVIADDY, a citizen of the United States, residing at 610 \Vest 116th street, New York, county of New York, and State of New York, have invented certain new and useful Improvements in Preparing Ferric Articles for Metallic Baths, fully described and represented in the following specification and the accom-, panying drawings, forming a part of the same. i
The present invention'relates to a means of protecting articles ofiron or-steel from corrosion by air, water, or acid fumes.
Ferric articles of sheet-iron or steel-plate, have often been dippedin molten lead to form a preservative coating thereon; but it is found that the protection afforded by such coating is far from perfect, as pin-holes or interstices are formed in the coating during the dipping operation through which, when putinto use, the atmosphereigradually gains access to the surface of the article and causes its corrosion.
-The .present invention prevents the formation f such defective coating when dipping in the lead bath, byfirst electro-plating a film of mercury upon the surface of the ar ticle, which mercury forms an amalgam with the iron or steel surface and covers it so thoroughly that the affinity of the lead.- for the amalgam enables the lead to adhere strongly to the article and form a continuous coatingand effective protection therefor.
The solution from which the mercury is electrically deposited upon thearticle should be an alkaline solution of mercury, Which 'may' be prepared in the proportion of 100 cubic centimeters of Water, one per cent. of cyanid of potassium, or other alkali; and from one to two per cent. of. mercuric cyanid.
Specification of Letters Patent. Patented Eiay 31,, 1921,
Application filed November 11, 1920. Serial No. 423,443. I
In practising the invention, the article is first thoroughly cleaned, as by a blast of steel grit "orin an acid bath,'and is then electro-plated Withmercury from the s0lution described.
When the film of mercury is deposited over the entire surface of the article, the article is immersed in the molten lead bath and the lead coating formed thereon.
I am aware that iron or steel articles have been dipped in a mercury cya'nid bath be- 'fore immersing them in a lead bath to form 'a lead coatingtbut an acid bath of mercury cyanid has always heretofore been used, although the acid in the'bath attacked the surface of the articles and impaired the uniformity of the lead coating subsequentlydeposited. 5
In the present invention an alkalinesolution of the mercury is employed which has no such effect upon the articles, and does not interfere with the uniform deposit of the mercury by an electroplating process.
The useof an alkaline mercury bath and the deposition of the mercuric film by elect'ro-plating distinguishes my invention from any previous use of mercur cyanid in the coating of iron or steel artic es.
Having thus set forth the nature of the invention what is claimed herein is:
The method of securing an effective continuous adhesion of lead coating to iron or steel articles in a molten bath, which consistsin electro-platin a film of mercury upon the surface of the article before dipping the article in the molten bath.
'In testimony whereof I have hereunto set my hand.
JAMES H. MAFDDY.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US423443A US1379998A (en) | 1920-11-11 | 1920-11-11 | Preparing ferric articles for metallic baths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US423443A US1379998A (en) | 1920-11-11 | 1920-11-11 | Preparing ferric articles for metallic baths |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1379998A true US1379998A (en) | 1921-05-31 |
Family
ID=23678917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US423443A Expired - Lifetime US1379998A (en) | 1920-11-11 | 1920-11-11 | Preparing ferric articles for metallic baths |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1379998A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2567762A (en) * | 1947-03-07 | 1951-09-11 | Raytheon Mfg Co | Method of coating nickel with mercury |
-
1920
- 1920-11-11 US US423443A patent/US1379998A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2567762A (en) * | 1947-03-07 | 1951-09-11 | Raytheon Mfg Co | Method of coating nickel with mercury |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2329065A (en) | Corrosion resistant coating for metal surfaces | |
| US2274963A (en) | Process for plating tin and tin alloys | |
| US213015A (en) | Improvement in processes for galvanizing and tinning iron | |
| US3841986A (en) | Electrophoretic deposition of ceramic coatings | |
| US3085028A (en) | Method and means for depositing silicon | |
| US1379998A (en) | Preparing ferric articles for metallic baths | |
| US2128550A (en) | Anticorrosion process for zinc base castings | |
| US1807875A (en) | Method of electroplating and product thereof | |
| US2023364A (en) | Metal coated ferrous article and process of making it | |
| US2509117A (en) | Method of making composite wire | |
| US1072091A (en) | Process for protecting iron surfaces from corrosion. | |
| US3089780A (en) | Method and composition for shielding steel from molten coating metal | |
| US1566984A (en) | Electroplating method and electroplated articles | |
| US1413343A (en) | Preparation of iron or steel for lead and tin coating | |
| US2610133A (en) | Processes of brightening and passivating cadmium and zinc | |
| US1787477A (en) | Process for chromium plating | |
| US2543365A (en) | Method of tin coating ferrous metal articles and bath therefor | |
| US1417896A (en) | Electrodeposition of metals upon iron and alloys of iron | |
| US1615707A (en) | Corrosion-resisting metal | |
| US1371445A (en) | Lead-coating process | |
| US2215507A (en) | Method of stripping copper plate | |
| US621084A (en) | Method of | |
| US1497265A (en) | Zinc-electroplated articles | |
| US3348979A (en) | Process for treating aluminum weld wire | |
| CN113463003A (en) | Plating assistant agent and hot galvanizing process applying same |