ES429190A1 - Method for improving abrasion resistance and for reducing friction of surfaces rubbing one against another in machinery - Google Patents
Method for improving abrasion resistance and for reducing friction of surfaces rubbing one against another in machineryInfo
- Publication number
- ES429190A1 ES429190A1 ES429190A ES429190A ES429190A1 ES 429190 A1 ES429190 A1 ES 429190A1 ES 429190 A ES429190 A ES 429190A ES 429190 A ES429190 A ES 429190A ES 429190 A1 ES429190 A1 ES 429190A1
- Authority
- ES
- Spain
- Prior art keywords
- percent
- weight
- machinery
- abrasion resistance
- electrode
- 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
Links
- 238000000034 method Methods 0.000 title abstract 4
- 238000005299 abrasion Methods 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 150000003839 salts Chemical class 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 239000004133 Sodium thiosulphate Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
- ZNNZYHKDIALBAK-UHFFFAOYSA-M potassium thiocyanate Chemical compound [K+].[S-]C#N ZNNZYHKDIALBAK-UHFFFAOYSA-M 0.000 abstract 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 abstract 1
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 abstract 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 abstract 1
- 235000019345 sodium thiosulphate Nutrition 0.000 abstract 1
- 150000003464 sulfur compounds Chemical class 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D9/00—Electrolytic coating other than with metals
- C25D9/04—Electrolytic coating other than with metals with inorganic materials
- C25D9/08—Electrolytic coating other than with metals with inorganic materials by cathodic processes
- C25D9/10—Electrolytic coating other than with metals with inorganic materials by cathodic processes on iron or steel
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- Chemical Treatment Of Metals (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
A process for improving abrasion resistance and reducing friction of a ferrous metal surface rubbing against another such surface in machinery, comprising submerging the surface in a bath of molten salt containing a sulfur compound and subjecting the surface to an electrolytic treatment with electric current of periodically reversing polarity, said surface forming an electrode which is positively polarized for a period of 2 to 20 times longer than the period of its negative polarization, the other electrode being a steel crucible or a steel electrode similar in shape to the shape of the surface to be treated, the process in the latter case taking place in a ceramic crucible. The process is conducted in a molten salt bath containing: 68 to 90 percent by weight of potassium rhodanate, 5 to 28 percent by weight of sodium rhodanate, 2 to 5 percent by weight of sodium thiosulphate or 2 to 5 percent by weight of sodium sulphide.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL1973166016A PL87552B1 (en) | 1973-10-20 | 1973-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES429190A1 true ES429190A1 (en) | 1976-09-01 |
Family
ID=19964527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES429190A Expired ES429190A1 (en) | 1973-10-20 | 1974-08-12 | Method for improving abrasion resistance and for reducing friction of surfaces rubbing one against another in machinery |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3922211A (en) |
| AT (1) | AT333095B (en) |
| ES (1) | ES429190A1 (en) |
| FR (1) | FR2248328B1 (en) |
| GB (1) | GB1410002A (en) |
| IT (1) | IT1017403B (en) |
| PL (1) | PL87552B1 (en) |
| SE (1) | SE404038B (en) |
| YU (1) | YU36997B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044266C (en) * | 1995-04-06 | 1999-07-21 | 蔡定康 | Fused salt composite for anodic sulfidation of iron and steel surface and its sulfidation method and equipment thereof |
| DE602004010890T2 (en) * | 2003-03-10 | 2008-12-11 | Kabushiki Kaisha Riken | NITRIDED VALVE TOOLS AND RELATED MANUFACTURING METHOD |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE621887A (en) * | 1961-08-30 | |||
| GB1227452A (en) * | 1967-08-07 | 1971-04-07 | ||
| US3666667A (en) * | 1969-04-14 | 1972-05-30 | Enthone | Alkaline cyanide-free aqueous descaling composition containing elemental sulfur |
| JPS4948387B1 (en) * | 1969-09-30 | 1974-12-20 |
-
1973
- 1973-10-20 PL PL1973166016A patent/PL87552B1/pl unknown
-
1974
- 1974-05-31 YU YU1509/74A patent/YU36997B/en unknown
- 1974-06-06 GB GB2505974A patent/GB1410002A/en not_active Expired
- 1974-06-25 FR FR7422039A patent/FR2248328B1/fr not_active Expired
- 1974-07-23 IT IT25509/74A patent/IT1017403B/en active
- 1974-07-31 SE SE7409855A patent/SE404038B/en unknown
- 1974-08-12 ES ES429190A patent/ES429190A1/en not_active Expired
- 1974-09-27 AT AT779074A patent/AT333095B/en not_active IP Right Cessation
- 1974-10-16 US US515683A patent/US3922211A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2248328B1 (en) | 1976-06-25 |
| US3922211A (en) | 1975-11-25 |
| SE7409855L (en) | 1975-04-21 |
| IT1017403B (en) | 1977-07-20 |
| GB1410002A (en) | 1975-10-15 |
| YU150974A (en) | 1981-11-13 |
| DE2430984A1 (en) | 1975-09-04 |
| SE404038B (en) | 1978-09-18 |
| AT333095B (en) | 1976-11-10 |
| FR2248328A1 (en) | 1975-05-16 |
| YU36997B (en) | 1984-08-31 |
| PL87552B1 (en) | 1976-07-31 |
| DE2430984B2 (en) | 1976-08-19 |
| ATA779074A (en) | 1976-02-15 |
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