DE844697C - Process for flame cutting of chromium-alloyed steels - Google Patents
Process for flame cutting of chromium-alloyed steelsInfo
- Publication number
- DE844697C DE844697C DEB8637A DEB0008637A DE844697C DE 844697 C DE844697 C DE 844697C DE B8637 A DEB8637 A DE B8637A DE B0008637 A DEB0008637 A DE B0008637A DE 844697 C DE844697 C DE 844697C
- Authority
- DE
- Germany
- Prior art keywords
- chromium
- cutting
- flame cutting
- alloyed steels
- silicon
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/228—Selection of materials for cutting
Description
Verfahren zum Brennschneiden chromlegierter Stähle Das Brennschneiden chromlegierter Stähle, wie z.13. der bekannten säure- und hitzebeständigen Stähle mit etwa 5 bis 30°/o Chrom und o bis 40°/0 Nickel, läßt sich nach den üblichen Verfahren nicht durchführen, da sich bei diesem ProzeB Chromoxyd mit einem Schmelzpunkt von etwa 200o° C bildet und dadurch der Schneidvorgang zum Stillstand gebracht wird.Process for flame cutting of chromium-alloyed steels The flame cutting chromium alloy steels, such as 13. the well-known acid and heat-resistant steels with about 5 to 30% chromium and 0 to 40 ° / 0 nickel, can be according to the usual methods not be carried out, since this process produces chromium oxide with a melting point of about 200o ° C and thereby the cutting process is brought to a standstill.
1?s sind nun verschiedene Verfahren bekanntgeworden, um das Schneiden mit Sauerstoff auch bei diesen Stählen zu ermöglichen. Alle diese Verfahren bestehen darin, daB Pulver der Schneidstelle zugeführt werden, die das Schneiden ermöglichen sollen. So werden z. B. Pulver von Natriumsalzen verwendet, welche die Chromsäure in eine leicht schmelzbare Schlacke überführen sollen, oder Zusätze von feinem Eisenpulver, wodurch eine Verdünnung der Verbrennungsprodukte der Schnittzone eintritt. Ferner wurde bereits vorgeschlagen, Kieselsäure als Zusatzpulver zu verwenden, wobei durch die kinetische Wirkung der Sandkörner die an den Wandungen haftenden Chromoxyde entfernt werden sollen.1? S different methods have now become known to cutting with oxygen even with these steels. All of these procedures exist in the fact that powders are fed to the cutting point, which enable the cutting should. So z. B. Powders of sodium salts are used, which contain chromic acid to be converted into an easily meltable slag, or additions of fine iron powder, whereby a dilution of the combustion products of the cutting zone occurs. Further it has already been proposed to use silica as an additive powder, whereby by the kinetic effect of the sand grains the chromium oxides adhering to the walls should be removed.
Versuche haben nun gezeigt, daB ein besonders gutes Schneiden erreicht wird, wenn man der Schneidstelle ein Pulver von Calcium-Silicium zuführt. Die Wirkung-`ties Cakium-Siliciums besteht darin, daß durch seine Verbrennung eine reaktionsfähige Kalksilikatschlacke entsteht, die die Chromsäure auflöst; darüber hinaus.- werden' aber sehr große Wärmemengen frei, die zu hohen Temperaturen an der Schnittstelle führen, so daß die Schlacke leicht abfließt.Tests have now shown that cutting is particularly good when a powder of calcium-silicon is fed to the cutting point. the Effect-`ties cakium-silicon consists in the fact that, through its combustion, a reactive Lime silicate slag is created, which dissolves the chromic acid; beyond.- will ' but very large amounts of heat are released, which lead to high temperatures at the interface lead so that the slag flows off easily.
Es können außer reinem Calcium-Silicium auch noch Gemische von Calcium-Silicium mit Ferrosilicium verwendet werden.In addition to pure calcium-silicon, mixtures of calcium-silicon can also be used be used with ferrosilicon.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT844697X | 1949-08-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE844697C true DE844697C (en) | 1952-07-24 |
Family
ID=3682103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB8637A Expired DE844697C (en) | 1949-08-08 | 1950-08-08 | Process for flame cutting of chromium-alloyed steels |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE844697C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE973738C (en) * | 1952-06-29 | 1960-05-25 | Linde Eismasch Ag | Cutting powder as an additive to the oxygen jet when flame cutting cast iron and high-alloy steels |
-
1950
- 1950-08-08 DE DEB8637A patent/DE844697C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE973738C (en) * | 1952-06-29 | 1960-05-25 | Linde Eismasch Ag | Cutting powder as an additive to the oxygen jet when flame cutting cast iron and high-alloy steels |
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