CH96342A - Process for removing carbon from metals with a high melting temperature. - Google Patents
Process for removing carbon from metals with a high melting temperature.Info
- Publication number
- CH96342A CH96342A CH96342DA CH96342A CH 96342 A CH96342 A CH 96342A CH 96342D A CH96342D A CH 96342DA CH 96342 A CH96342 A CH 96342A
- Authority
- CH
- Switzerland
- Prior art keywords
- carbon
- metals
- melting temperature
- high melting
- removing carbon
- Prior art date
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 15
- 229910052799 carbon Inorganic materials 0.000 title claims description 15
- 229910052751 metal Inorganic materials 0.000 title claims description 11
- 239000002184 metal Substances 0.000 title claims description 11
- 238000002844 melting Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 6
- 230000008018 melting Effects 0.000 title claims description 5
- 150000002739 metals Chemical class 0.000 title description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 229910052770 Uranium Inorganic materials 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- -1 B. Iron Chemical class 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Carbon And Carbon Compounds (AREA)
Description
Verfahren zur Entfernung des Kohlenstoffes aus IVIetallen von hoher Schmelztemperatur. Die Entfernung von Kohlenstoff aus manchen Metallen, wie z. B. Eisen, die durch einen Schmelzprozess im Kohletiegel Kohlen stoff aufgenommen haben, kann durch das sogenannte Tempern erfolgen.
Dieses Verfah ren versagt aber bei Metallen von hoher Schmelztemperatur, da die zum Tempern er forderlichen sauerstoffhaltigen Einhüllungen nur niedrige Temperaturen vertragen, bei hohen Temperaturen jedoch sehr stark zusam- mensintern und dann den Kohlenstoff nicht in der beim Tempern von Eisen erkennbaren Weise entfernen, sondern eine neue Oxyda tion des Werkmaterials herbeiführen.
Das vorliegende Verfahren beruht auf der Erkenntnis, dass der Kohlenstoff aus hoch schmelzenden Metallen, wie Wolfram, Tau tal, Molybdän, Uran, Titan und Bor, in Gas form entweicht, wenn die zu bearbeitenden Werkstücke einer Erhitzung bis dicht an den Schmelzpunkt der Metalle unterworfen wer den. Wolfram-Metall schmilzt beispielsweise bei<B>2990';</B> eine merkliche Entweichung von Kohlenstoff kann schon bei ca. 2300-2400' beobachtet werden, ohne dass ein oxydieren- des Reagenz, wie ein Oxyd, Sauerstoff und dergleichen, vorhanden wäre.
Das Verfahren wird so ausgeführt, dass das kohlenstoffhaltige Metall in einem luft dicht geschlossenen Behälter hoch erhitzt wird, und dass der dadurch verdampfende Kohlenstoff durch Absaugen mittelst einer Vakuumpumpe, sowie eines keinen Kohlen stoff enthaltenden indifferenten Gases ent fernt wird, ohne dass das Metall in den. schmelzflüssigen Zustand übergeführt wird.
Process for removing the carbon from high melting temperature metals. The removal of carbon from some metals, such as B. Iron, which have taken up carbon through a melting process in the carbon crucible, can be done by so-called annealing.
However, this process fails in the case of metals with a high melting temperature, since the oxygen-containing envelopes required for tempering can only tolerate low temperatures, but at high temperatures they are very strongly sintered and then do not remove the carbon in the manner recognizable when iron is tempered, but rather one bring about new oxidation of the material.
The present process is based on the knowledge that the carbon from high-melting metals such as tungsten, tau tal, molybdenum, uranium, titanium and boron escapes in gaseous form when the workpieces to be processed are subjected to heating close to the melting point of the metals will. Tungsten metal melts, for example, at <B> 2990 '; </B> a noticeable escape of carbon can already be observed at approx. 2300-2400' without an oxidizing reagent such as an oxide, oxygen and the like being present would.
The method is carried out in such a way that the carbon-containing metal is heated to a high temperature in an airtight container, and that the carbon that evaporates as a result is removed by suction using a vacuum pump and a non-carbon-containing inert gas without the metal entering the . molten state is transferred.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE157780X | 1919-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH96342A true CH96342A (en) | 1922-10-02 |
Family
ID=5679006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH96342D CH96342A (en) | 1919-01-13 | 1921-03-30 | Process for removing carbon from metals with a high melting temperature. |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT95311B (en) |
| CH (1) | CH96342A (en) |
| GB (1) | GB157780A (en) |
| NL (1) | NL14373C (en) |
-
1921
- 1921-01-10 GB GB1488/21A patent/GB157780A/en not_active Expired
- 1921-03-30 AT AT95311D patent/AT95311B/en active
- 1921-03-30 NL NL18847A patent/NL14373C/xx active
- 1921-03-30 CH CH96342D patent/CH96342A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT95311B (en) | 1923-12-27 |
| GB157780A (en) | 1922-03-09 |
| NL14373C (en) | 1926-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106282836B (en) | Steam turbine 2Cr11MoVNbN forging and its manufacturing method | |
| JP5574953B2 (en) | Heat-resistant steel for forging, method for producing heat-resistant steel for forging, forged parts, and method for producing forged parts | |
| CN109112408A (en) | The manufacturing method of the heat-resisting steel forgings of big specification P92 | |
| US2205386A (en) | Production of metals and alloys | |
| CN108193060B (en) | Rhenium-containing molybdenum concentrate volatilization-water logging separation molybdenum-rhenium method | |
| CN105121689A (en) | Stainless steel for hot forging, and hot forging method using said steel | |
| CA1068116A (en) | Process for the treatment of platinum group metals and gold | |
| CN115287544B (en) | Soft magnetic stainless steel wire rod with excellent welding performance and manufacturing method thereof | |
| CH96342A (en) | Process for removing carbon from metals with a high melting temperature. | |
| WO2016010073A1 (en) | Production method for maraging steel and production method for maraging steel consumable electrode | |
| US1814720A (en) | Preparation of ductile vanadium | |
| US2709145A (en) | Heat-treatment of nickel and nickel containing alloys | |
| US1358810A (en) | Process of treating magnetizable material | |
| DE102020101221A1 (en) | Process for the recovery of heavy metal oxides from sources containing heavy metals | |
| KR20220052670A (en) | High-quality ferro-titanium casting technology using titanium scrap | |
| AT18611B (en) | Process for the production of homogeneous bodies from tantalum metal or other difficult-to-melt metals. | |
| US3413204A (en) | Method for deforming metal single crystals | |
| US2568251A (en) | Process for refining refractory carbides | |
| US635093A (en) | Process of treating refractory sulfid ores. | |
| US3723098A (en) | Method of manufacturing iron base alloys | |
| KR101959981B1 (en) | Recovering method of molybdenum from nickel-based superalloy scrap | |
| JP7336075B2 (en) | Separation method of selenium and platinum group elements | |
| US1298454A (en) | Process for extracting silver from ore. | |
| US1378822A (en) | Treatment of lixiviation-residue zinc | |
| JPH0372697B2 (en) |