GB447932A - Improvements in or relating to the manufacture of case hardened piston rings - Google Patents
Improvements in or relating to the manufacture of case hardened piston ringsInfo
- Publication number
- GB447932A GB447932A GB3897/35A GB389735A GB447932A GB 447932 A GB447932 A GB 447932A GB 3897/35 A GB3897/35 A GB 3897/35A GB 389735 A GB389735 A GB 389735A GB 447932 A GB447932 A GB 447932A
- Authority
- GB
- United Kingdom
- Prior art keywords
- case
- hardening
- ring
- tensioning
- manufacture
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
In the manufacture of case-hardened piston rings in which the tensioning of the slotted ring and the case-hardening are both effected by applying heat, the case-hardening is effected simultaneously with the tensioning. The slotted untensioned ring is placed upon a tensioning member and the ring is heated under such conditions as to produce both the tensioning and the case-hardening. The case-hardening may be produced by heating cast iron rings in an atmosphere of cyanogen, cyanogen compounds such as butane or rings of an alloy cast iron containing aluminium or chromium in an atmosphere containing nitrogen. Parts of the ring which is not desired to case-harden are coated with a mixture of aluminium and water glass or chromium oxide and waterglass.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE447932X | 1911-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB447932A true GB447932A (en) | 1936-05-28 |
Family
ID=6538069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3897/35A Expired GB447932A (en) | 1934-05-11 | 1935-02-06 | Improvements in or relating to the manufacture of case hardened piston rings |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR447932A (en) |
| GB (1) | GB447932A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3502144A1 (en) * | 1984-01-23 | 1985-08-08 | Nippon Piston Ring Co., Ltd., Tokio/Tokyo | Process for producing a wear-resistant compression piston ring from steel |
| GB2155046A (en) * | 1981-12-16 | 1985-09-18 | Ae Plc | Surface treatment of metal rings |
-
1912
- 1912-09-03 FR FR447932D patent/FR447932A/en not_active Expired
-
1935
- 1935-02-06 GB GB3897/35A patent/GB447932A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2155046A (en) * | 1981-12-16 | 1985-09-18 | Ae Plc | Surface treatment of metal rings |
| DE3502144A1 (en) * | 1984-01-23 | 1985-08-08 | Nippon Piston Ring Co., Ltd., Tokio/Tokyo | Process for producing a wear-resistant compression piston ring from steel |
Also Published As
| Publication number | Publication date |
|---|---|
| FR447932A (en) | 1913-01-18 |
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