DE222402C - - Google Patents
Info
- Publication number
- DE222402C DE222402C DENDAT222402D DE222402DA DE222402C DE 222402 C DE222402 C DE 222402C DE NDAT222402 D DENDAT222402 D DE NDAT222402D DE 222402D A DE222402D A DE 222402DA DE 222402 C DE222402 C DE 222402C
- Authority
- DE
- Germany
- Prior art keywords
- atmospheres
- modification
- procedure
- reducing
- sodium hydroxide
- 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.)
- Active
Links
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- 238000000034 method Methods 0.000 claims 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910001018 Cast iron Inorganic materials 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 238000005266 casting Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 238000012986 modification Methods 0.000 claims 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
- C21D5/04—Heat treatments of cast-iron of white cast-iron
- C21D5/06—Malleabilising
- C21D5/08—Malleabilising with oxidation of carbon
- C21D5/10—Malleabilising with oxidation of carbon in gaseous agents
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)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture Of Iron (AREA)
- Mold Materials And Core Materials (AREA)
Description
BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.
Claims (2)
1. Abänderung des Verfahrens zur Herabminderung des Kohlenstoffgehaltes von
Gußstücken aus Gußeisen nach Patent 205210 und 213950, dadurch gekennzeichnet, daß
das Natriumhydroxyd in Dampfform angewandt wird.
2. Ausführungsart des Verfahrens nach Anspruch I, dadurch gekennzeichnet, daß
das Verfahren bei einem Druck von etwa zwei Atmosphären durchgeführt wird.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE222402C true DE222402C (de) |
Family
ID=483301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT222402D Active DE222402C (de) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE222402C (de) |
-
0
- DE DENDAT222402D patent/DE222402C/de active Active
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