JPS55128531A - Method and apparatus for blowing reactive gas into heat treating furnace for ferrous powder - Google Patents
Method and apparatus for blowing reactive gas into heat treating furnace for ferrous powderInfo
- Publication number
- JPS55128531A JPS55128531A JP3480479A JP3480479A JPS55128531A JP S55128531 A JPS55128531 A JP S55128531A JP 3480479 A JP3480479 A JP 3480479A JP 3480479 A JP3480479 A JP 3480479A JP S55128531 A JPS55128531 A JP S55128531A
- Authority
- JP
- Japan
- Prior art keywords
- iron powder
- furnace
- hydrogen containing
- gas
- containing gas
- 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.)
- Granted
Links
- 238000007664 blowing Methods 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 4
- 239000000843 powder Substances 0.000 title abstract 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 8
- 239000007789 gas Substances 0.000 abstract 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 4
- 239000001257 hydrogen Substances 0.000 abstract 4
- 229910052739 hydrogen Inorganic materials 0.000 abstract 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 2
- 239000001301 oxygen Substances 0.000 abstract 2
- 229910052760 oxygen Inorganic materials 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 239000010959 steel Substances 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
- C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
- C21D3/02—Extraction of non-metals
- C21D3/04—Decarburising
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)
- Powder Metallurgy (AREA)
Abstract
PURPOSE:To prepare the sintered cake of a low carbon iron powder in a good yield by a method wherein an iron powder is decarburized by a humidified hydrogen containing gas while conveyed by a belt conveyor through a furnace and, subsequently, the oxygen within an iron powder is removed by a dehumidified hydrogen containing gas. CONSTITUTION:A steel strip 9 is driven within a londitutinal furnace and a stock iron powder placed thereon is conveyed. Plural gas blowing pipes 4 are provided to a ceiling of furnace and a temp. adjusting radiant tube 12, 12' is provided within a furnace. A humidified hydrogen containing gas is blowing in from a gas blowing pipe 4 in a stock iron powder introducing side in a furnace to decarburize an iron powder 10 and a low carbon product is obtained. Subsequently, a dehumidified hydrogen containing gas is blown in a product discharge side to remove the oxygen contained in an iron powder and a sintered cake is produced. In this case, a distance h from a leading end of a gas blowing pipe 4 to a surface of an iron powder 10 is adjusted to 50-200mm and, by lengthening the said distance in a preceding procedure as well as shortening in a succeeding procedure, the removal of a gas generated by a decarburizing reaction is rapidly carried out and the lowering of a yield caused to the scattering of an iron powder is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54034804A JPS5830921B2 (en) | 1979-03-23 | 1979-03-23 | Method and device for injecting reactive gas into iron-based powder heat treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54034804A JPS5830921B2 (en) | 1979-03-23 | 1979-03-23 | Method and device for injecting reactive gas into iron-based powder heat treatment furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55128531A true JPS55128531A (en) | 1980-10-04 |
| JPS5830921B2 JPS5830921B2 (en) | 1983-07-02 |
Family
ID=12424405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54034804A Expired JPS5830921B2 (en) | 1979-03-23 | 1979-03-23 | Method and device for injecting reactive gas into iron-based powder heat treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5830921B2 (en) |
-
1979
- 1979-03-23 JP JP54034804A patent/JPS5830921B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5830921B2 (en) | 1983-07-02 |
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