GB840612A - Method of surface hardening cast-iron - Google Patents
Method of surface hardening cast-ironInfo
- Publication number
- GB840612A GB840612A GB29864/58A GB2986458A GB840612A GB 840612 A GB840612 A GB 840612A GB 29864/58 A GB29864/58 A GB 29864/58A GB 2986458 A GB2986458 A GB 2986458A GB 840612 A GB840612 A GB 840612A
- Authority
- GB
- United Kingdom
- Prior art keywords
- heating
- hardened
- iron
- quenching
- cast iron
- 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
- C21D5/00—Heat treatments of cast-iron
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
Ferritic or semiferritic cast iron is surface hardened by heating the surface, with an oxyacetylene flame or by induction, to dissolve free carbon and form a pearlitic structure, the heating being repeated with slow intercooling, followed by surface heating to the hardening temperature and quenching. Spheroidal graphite cast iron may be surface hardened by induction heating six times to 950 DEG C. for periods of 14 seconds each, and slow cooling to 500 DEG C. by compressed air followed by a water quench. The pearlitic surface areas may then be hardened by heating and quenching.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT840612X | 1957-09-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB840612A true GB840612A (en) | 1960-07-06 |
Family
ID=3682027
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB29864/58A Expired GB840612A (en) | 1957-09-19 | 1958-09-18 | Method of surface hardening cast-iron |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB840612A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0086357A1 (en) * | 1982-02-12 | 1983-08-24 | FIAT Veicoli Industriali S.p.A. | Method for providing a crankcase for a reciprocating internal combustion engine and crankcase realized by said method |
EP0275529A1 (en) * | 1986-12-19 | 1988-07-27 | FIAT AUTO S.p.A. | Method for preparing large cast iron dies, particularly for vehicle-sheet metal pressing, and the apparatus for its implementation |
-
1958
- 1958-09-18 GB GB29864/58A patent/GB840612A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0086357A1 (en) * | 1982-02-12 | 1983-08-24 | FIAT Veicoli Industriali S.p.A. | Method for providing a crankcase for a reciprocating internal combustion engine and crankcase realized by said method |
EP0275529A1 (en) * | 1986-12-19 | 1988-07-27 | FIAT AUTO S.p.A. | Method for preparing large cast iron dies, particularly for vehicle-sheet metal pressing, and the apparatus for its implementation |
US4899024A (en) * | 1986-12-19 | 1990-02-06 | Fiat Auto S.P.A. | Method for treating large cast iron dies, particularly for vehicle-sheet metal pressing |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1030045A (en) | Improved track pin bushing | |
GB840612A (en) | Method of surface hardening cast-iron | |
ES435749A1 (en) | Method of and apparatus for hardening workpieces of steel | |
ES440390A1 (en) | Belleville spring | |
GB994925A (en) | Weldable and hardenable steels, and methods of producing them | |
JPS5248507A (en) | Method for cooling outer surface of metallic pipe or large diameter | |
JPS5253712A (en) | Equipment for continuous annealing containingoverage treatment | |
GB875998A (en) | Improvements in or relating to case-hardening | |
GB851346A (en) | Process of nitriding hardenable steel | |
GB947409A (en) | Improvements in methods of hardening concrete and shuttering for carrying the method into effect | |
GB763492A (en) | Improvements in or relating to cylinder liners | |
ES237339A1 (en) | Procedure for the preparation of iron directly from minerals. (Machine-translation by Google Translate, not legally binding) | |
GB480870A (en) | Improvements in or relating to the case hardening of iron and steel | |
JPS57194208A (en) | Partial heat treatment and device for parts comprising iron material | |
JPS5229418A (en) | Heat resisting steel | |
GB1010189A (en) | Method of treating steel | |
JPS5410218A (en) | Quench hardening method for steel tube with occurence of no quenching crack | |
GB852359A (en) | Improvements in and relating to the manufacture of metal rings | |
ES299732A1 (en) | Procedure to obtain hardened steel products (Machine-translation by Google Translate, not legally binding) | |
ES249049A1 (en) | Procedure for obtaining steel molded to manganese of austenic structure (Machine-translation by Google Translate, not legally binding) | |
GB960174A (en) | Improvements in the production of hard steel particles | |
GB940018A (en) | Surface treatment and hardening of ferrous materials | |
JPS55131123A (en) | Surface treating method of ferrite cast iron | |
GB802440A (en) | Improvements in the manufacture of spheroidal graphite cast iron | |
GB143554A (en) | Improvements in or relating to the manufacture of hard cast iron articles |