BE903071A - Procede de traitement de pieces d'oeuvre en fonte - Google Patents
Procede de traitement de pieces d'oeuvre en fonteInfo
- Publication number
- BE903071A BE903071A BE0/215474A BE215474A BE903071A BE 903071 A BE903071 A BE 903071A BE 0/215474 A BE0/215474 A BE 0/215474A BE 215474 A BE215474 A BE 215474A BE 903071 A BE903071 A BE 903071A
- Authority
- BE
- Belgium
- Prior art keywords
- cast iron
- treating workpieces
- workpiece
- transformation
- pearlitic
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 229910001018 Cast iron Inorganic materials 0.000 title 1
- 230000009466 transformation Effects 0.000 abstract 2
- 238000005275 alloying Methods 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
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)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Selon ce procédé la structure étant constituée par une masse de base perlitique, l'addition d'éléments d'alliage détermine un retardement de la transformation. Par la combinaison de l'action d'un milieu gazeux à la face externe de la pièce d'oeuvre et de l'effet de l'auto-trempe à partir de l'intérieur de la pièce d'oeuvre , celle-ci est amenée à la température de transformation dans la phase bainitique choisie.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3430267 | 1984-08-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE903071A true BE903071A (fr) | 1985-12-02 |
Family
ID=6243267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE0/215474A BE903071A (fr) | 1984-08-17 | 1985-08-14 | Procede de traitement de pieces d'oeuvre en fonte |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE903071A (fr) |
| CH (1) | CH666053A5 (fr) |
| ES (1) | ES8605044A1 (fr) |
| IT (1) | IT1209656B (fr) |
| ZA (1) | ZA856240B (fr) |
-
1985
- 1985-08-08 CH CH3398/85A patent/CH666053A5/de not_active IP Right Cessation
- 1985-08-14 BE BE0/215474A patent/BE903071A/fr not_active IP Right Cessation
- 1985-08-14 IT IT8521931A patent/IT1209656B/it active
- 1985-08-16 ZA ZA856240A patent/ZA856240B/xx unknown
- 1985-08-16 ES ES546212A patent/ES8605044A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH666053A5 (de) | 1988-06-30 |
| IT1209656B (it) | 1989-08-30 |
| ES546212A0 (es) | 1986-03-01 |
| ES8605044A1 (es) | 1986-03-01 |
| ZA856240B (en) | 1986-04-30 |
| IT8521931A0 (it) | 1985-08-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: GEORG FISCHER A.G. Effective date: 19910831 |