GB714490A - Method and apparatus for hardening serrated articles - Google Patents
Method and apparatus for hardening serrated articlesInfo
- Publication number
- GB714490A GB714490A GB2932750A GB2932750A GB714490A GB 714490 A GB714490 A GB 714490A GB 2932750 A GB2932750 A GB 2932750A GB 2932750 A GB2932750 A GB 2932750A GB 714490 A GB714490 A GB 714490A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cores
- hardened
- group
- serrated
- hardening
- 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
-
- 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
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
714,490. Surface hardening. DELAPENA & SON. Ltd. Nov. 26, 1951 [Nov. 30, 1950], No. 29327/50. Class 72 [Also in Group XI] In a method of hardening serrated articles by high frequency electric induction heating and quenching, the induction coil has a core which is disposed normally to the pitch line, or to the tangent to the pitch are should the serrated surface be curved, with one end of the core projecting into a tooth space and being profiled to approximately the same form as the space so that the flux concentration is substantially uniform over the tooth flanks and trough. As shown, a spur gear wheel is hardened by heaters, with cores 11, which are profiled so as to leave a gap of approximately 1 mm. between cores and wheel. Pipes 13 attached to the cores carry quenching liquid, so that the spaces 10a are hardened as the cores move along the serrations. If the tips also of the teeth are to be hardened, the cores are provided with the outline indicated at 18. Splash guards may be fitted to the cores on their edges adjoining the quenching pipes, each in the form of a narrow extension reducing the width of the gap. The tooth gaps may be treated one at a time using a single core. or a group of cores may be used. The cores may be built up from powdered magnetic material or of steel laminae as described in Specification 714.488, [Group XI]:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2932750A GB714490A (en) | 1950-11-30 | 1950-11-30 | Method and apparatus for hardening serrated articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2932750A GB714490A (en) | 1950-11-30 | 1950-11-30 | Method and apparatus for hardening serrated articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB714490A true GB714490A (en) | 1954-09-01 |
Family
ID=10289799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2932750A Expired GB714490A (en) | 1950-11-30 | 1950-11-30 | Method and apparatus for hardening serrated articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB714490A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0384964A1 (en) * | 1989-03-02 | 1990-09-05 | Tocco, Inc. | Process and apparatus for induction hardening of the corrugated surfaces of a workpiece |
| CN114466475A (en) * | 2020-11-07 | 2022-05-10 | 株洲市湘宁高中频设备有限责任公司 | One-second-third gear synchronous ring outer ring induction heating device and using method thereof |
-
1950
- 1950-11-30 GB GB2932750A patent/GB714490A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0384964A1 (en) * | 1989-03-02 | 1990-09-05 | Tocco, Inc. | Process and apparatus for induction hardening of the corrugated surfaces of a workpiece |
| CN114466475A (en) * | 2020-11-07 | 2022-05-10 | 株洲市湘宁高中频设备有限责任公司 | One-second-third gear synchronous ring outer ring induction heating device and using method thereof |
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