US1572354A - Rustproofing bath for iron and steel - Google Patents
Rustproofing bath for iron and steel Download PDFInfo
- Publication number
- US1572354A US1572354A US559599A US55959922A US1572354A US 1572354 A US1572354 A US 1572354A US 559599 A US559599 A US 559599A US 55959922 A US55959922 A US 55959922A US 1572354 A US1572354 A US 1572354A
- Authority
- US
- United States
- Prior art keywords
- bath
- iron
- steel
- sodium
- rustproofing
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 8
- 229910052742 iron Inorganic materials 0.000 title description 4
- 229910000831 Steel Inorganic materials 0.000 title description 3
- 239000010959 steel Substances 0.000 title description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 9
- 229910052708 sodium Inorganic materials 0.000 description 9
- 239000011734 sodium Substances 0.000 description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 7
- 150000007513 acids Chemical class 0.000 description 5
- 239000001488 sodium phosphate Substances 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000403 monosodium phosphate Inorganic materials 0.000 description 3
- 235000019799 monosodium phosphate Nutrition 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910000398 iron phosphate Inorganic materials 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 description 1
- 235000019801 trisodium phosphate Nutrition 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/07—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing phosphates
- C23C22/08—Orthophosphates
Definitions
- This invention relates to rust proofing iron and steel and the object of the invention is'to provide an improved bath compound for the purpose, whereby the rust proofing may be done more effectively and less care need be exercised in maintaining the bath in proper working condition.
- the articles to be rust proofed are immersed in a hot, weak solution of phosphoric acid and water until a substantial coating of-iron phosphate is formed and the time required varies, in practice, from one to several hours. s
- Phosphoric acid (85%) 100 Metallic sodium 4
- the sodium dissolves forming monosodium phosphate in the acld.
- the prepared acid thus formed is used pickling there is sufficient acid carried over- 'in the regular way in preparing the rust proofing bath.
- the sodium in the solution changes the free sulphuric and other pickling and like acids into the sodium salts of these acids and these salts remain dissolved in the solution and do not precipitate to form a sludge at the bottom of the tanks.
- the ill effects of the foreign acids are destroyed without danger of causing a sludge to form on the work or to accumulate in the bottom of the tank.
- My compound is used in the same way as unprepared phosphoric acid and meets all the requirements even when manganese dioxide or zinc phosphate or both are added to the bath which is often done in practice.
- the phosphoric acid may be made from material containing sodium so proportioned that the requisite amount of sodium will be present in the phosphoric acid when it is manufactured.
- magnesium and potassium may be used instead of the sodium and it is understood that in the claims the term sodium includes also magnesium andpotassium, or
- A* bath for rust proofing comprising water, free phosphoric acid and monosodium phosphate which combining with pickling and foreign acids opposes the for-' maticn of a sludge.
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (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
Patented Feb. 9, 1926.
UNITED STATES JAMES H. GRAVELL, F ELKINS PARK, PENNSYLVANIA.
RUSTPROOFING BATH FOR IRON AND STEEL No Drawing. Application filed May 9, 1922, Serial No. 559,599. Renewed November 3, 1925.
To all whom it may concern:
Be it known that 1, JAMES H. GRAVELL, a citizen of the United States, residing at Elkins Park, in the county of Montgomery and State of Pennsylvania, have invented a new and useful Improvement in Rustproofing Baths for Iron and Steel, of which the following is a specification. 1
This invention relates to rust proofing iron and steel and the object of the invention is'to provide an improved bath compound for the purpose, whereby the rust proofing may be done more effectively and less care need be exercised in maintaining the bath in proper working condition.
According to the rust proofing process to which this invention is applicable, the articles to be rust proofed are immersed in a hot, weak solution of phosphoric acid and water until a substantial coating of-iron phosphate is formed and the time required varies, in practice, from one to several hours. s
This process is satisfactory where the surface of the articles is perfectly free from acids, for example, where the metal articles have been sand blasted, but where the work has been prepared for rust proofing by Pounds.
Phosphoric acid (85%) 100 Metallic sodium 4 The sodium dissolves forming monosodium phosphate in the acld.
The prepared acid thus formed is used pickling there is sufficient acid carried over- 'in the regular way in preparing the rust proofing bath.
The sodium in the solution changes the free sulphuric and other pickling and like acids into the sodium salts of these acids and these salts remain dissolved in the solution and do not precipitate to form a sludge at the bottom of the tanks. The ill effects of the foreign acids are destroyed without danger of causing a sludge to form on the work or to accumulate in the bottom of the tank.
My compound is used in the same way as unprepared phosphoric acid and meets all the requirements even when manganese dioxide or zinc phosphate or both are added to the bath which is often done in practice.
It will be evident to those skilled in the art that the metallic sodium may be replaced by chemical equivalents such as mon o-, di-, or tri-sodium phosphate without departing from the spirit of the invention,
-and the phosphoric acid may be made from material containing sodium so proportioned that the requisite amount of sodium will be present in the phosphoric acid when it is manufactured. My experience indicates that magnesium and potassium may be used instead of the sodium and it is understood that in the claims the term sodium includes also magnesium andpotassium, or
combinations of sodium, magnesium and potassium.
I claim:
1. A* bath for rust proofing comprising water, free phosphoric acid and monosodium phosphate which combining with pickling and foreign acids opposes the for-' maticn of a sludge.
2. The method of rust proofing a metallic surface which consists in forming a substantial coatingof iron phosphate on the surface by subjecting the surface to the action of a bath containing mono-sodium phosphate. free phosphoric acid and water, substantially as described.
JAMES H. GRAVE; i,
till
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US559599A US1572354A (en) | 1922-05-09 | 1922-05-09 | Rustproofing bath for iron and steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US559599A US1572354A (en) | 1922-05-09 | 1922-05-09 | Rustproofing bath for iron and steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1572354A true US1572354A (en) | 1926-02-09 |
Family
ID=24234211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US559599A Expired - Lifetime US1572354A (en) | 1922-05-09 | 1922-05-09 | Rustproofing bath for iron and steel |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1572354A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2870066A (en) * | 1956-08-01 | 1959-01-20 | Shell Dev | Condensation and separation process |
| US2901438A (en) * | 1956-10-25 | 1959-08-25 | Union Carbide Corp | Corrosion inhibitors |
-
1922
- 1922-05-09 US US559599A patent/US1572354A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2870066A (en) * | 1956-08-01 | 1959-01-20 | Shell Dev | Condensation and separation process |
| US2901438A (en) * | 1956-10-25 | 1959-08-25 | Union Carbide Corp | Corrosion inhibitors |
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