GB794806A - Improvements in or relating to the surface treatment of clutch discs - Google Patents
Improvements in or relating to the surface treatment of clutch discsInfo
- Publication number
- GB794806A GB794806A GB38248/56A GB3824856A GB794806A GB 794806 A GB794806 A GB 794806A GB 38248/56 A GB38248/56 A GB 38248/56A GB 3824856 A GB3824856 A GB 3824856A GB 794806 A GB794806 A GB 794806A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discs
- relating
- clutch discs
- surface treatment
- 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
Links
- 238000004381 surface treatment Methods 0.000 title 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 abstract 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 238000010002 mechanical finishing Methods 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000005121 nitriding Methods 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 235000010333 potassium nitrate Nutrition 0.000 abstract 1
- 239000004323 potassium nitrate Substances 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 235000010344 sodium nitrate Nutrition 0.000 abstract 1
- 239000004317 sodium nitrate Substances 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/027—Compositions based on metals or inorganic oxides
-
- 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
- C23C22/70—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 melts
- C23C22/72—Treatment of iron or alloys based thereon
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0038—Surface treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Braking Arrangements (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Steel friction discs, particularly clutch discs are hardened after the mechanical finishing of the disc, especially by agents which liberate nitrogen, for example in a a cyanide bath or by the carbon nitriding process. The treatment is then completed by quenching the discs in a salt bath such as a melt of sodium nitrate and potassium nitrate to produce an oxide layer.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE794806X | 1956-04-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB794806A true GB794806A (en) | 1958-05-07 |
Family
ID=6710597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB38248/56A Expired GB794806A (en) | 1956-04-28 | 1956-12-14 | Improvements in or relating to the surface treatment of clutch discs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB794806A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2934113A1 (en) * | 1979-08-23 | 1981-04-09 | Degussa Ag, 6000 Frankfurt | METHOD FOR INCREASING THE CORROSION RESISTANCE OF NITRATED COMPONENTS MADE OF IRON MATERIALS |
-
1956
- 1956-12-14 GB GB38248/56A patent/GB794806A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2934113A1 (en) * | 1979-08-23 | 1981-04-09 | Degussa Ag, 6000 Frankfurt | METHOD FOR INCREASING THE CORROSION RESISTANCE OF NITRATED COMPONENTS MADE OF IRON MATERIALS |
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