US3346363A - Method of producing ferromanganese powder - Google Patents
Method of producing ferromanganese powder Download PDFInfo
- Publication number
- US3346363A US3346363A US529250A US52925066A US3346363A US 3346363 A US3346363 A US 3346363A US 529250 A US529250 A US 529250A US 52925066 A US52925066 A US 52925066A US 3346363 A US3346363 A US 3346363A
- Authority
- US
- United States
- Prior art keywords
- powder
- ferromanganese
- chilled
- aid
- producing
- 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 - Lifetime
Links
- 239000000843 powder Substances 0.000 title claims description 28
- 229910000616 Ferromanganese Inorganic materials 0.000 title claims description 22
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0207—Using a mixture of prealloyed powders or a master alloy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
-
- 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
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/365—Selection of non-metallic compositions of coating materials either alone or conjoint with selection of soldering or welding materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
- B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
Definitions
- the invention relates to the production of ferromanganese powder, and relates more particularly to the method of such production wherein molten ferromanganese is atomized with the aid of either steam or pressurized water, and the liquid droplets thereafter are chilled in a water bath.
- ferromanganese powder are needed as an additive for the coating of welding electrodes.
- the powder is produced by first breaking cast blocks of ferromanganese and thereafter grinding to a fine powder the broken block parts in heavy pebble mills.
- This method of the prior art has met with difficulties.
- Ferromanganese is brittle, so that during the grinding there occurs a large part of dust-like powder; this dust-like powder, however, is not usable as an additive in the coating of electrodes, and therefore needs to be recast.
- the grinding must be carried out under a protective gas cover, which requires the observing of explosive protective measures to avoid the occurrence of dust explosions.
- the invention accordingly comprises the several steps and the relation of one or more of such steps with respect to each of the others, all as exemplified in the following detailed disclosure, and the scope of the application of which will be indicated in the claims.
- molten ferromanganese emerges from an annular nozzle in the form of a jet, is atomized with the aid of either steam or pressurized water into fine droplets, and these fine droplets are subsequently chilled in a water bath. Thereafter, the chilled powder either with or without an intervening predrying step, is heated to a temperature of from about 200 C. to 400 C., preferably a temperature of about 280 C., in a hydrogen-free atmosphere, for instance in dry air.
- Example 8 After the atomizing of molten ferromanganese of conventional composition, with the aid of pressurized water, the resulting powder had a hydrogen content of 37 cubic centimeters per grams. The following percentages thereof were removed during the subsequent heat treat- Where still higher heating temperatures are applied, they change the hydrogen content only little; furthermore, there exists then the danger of oxidation of the powder.
- a method of producing ferromanganese powder wherein molten ferromanganese is atomized with the aid of steam or pressurized water and the liquid droplets are chilled in a water bath, the steps comprising heating the chilled powder at a temperature of from about 200 C. to about 400 C. in a hydrogen-free atmosphere.
- the heating temperature being about 280 C.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Battery Electrode And Active Subsutance (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM64252A DE1216903B (de) | 1965-02-22 | 1965-02-22 | Verfahren zum Herstellen von Ferromangan-pulver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3346363A true US3346363A (en) | 1967-10-10 |
Family
ID=7311052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US529250A Expired - Lifetime US3346363A (en) | 1965-02-22 | 1966-02-23 | Method of producing ferromanganese powder |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3346363A (instruction) |
| BE (1) | BE676351A (instruction) |
| CH (1) | CH463713A (instruction) |
| DE (1) | DE1216903B (instruction) |
| GB (1) | GB1117042A (instruction) |
| NL (1) | NL6601358A (instruction) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3896130A1 (en) * | 2020-04-17 | 2021-10-20 | Ferroglobe Innovation, S.L. | Method for obtaining coloured metal-containing powder, the powder obtained thereof and its use as metallic pigment |
-
1965
- 1965-02-22 DE DEM64252A patent/DE1216903B/de active Pending
-
1966
- 1966-02-01 CH CH136266A patent/CH463713A/de unknown
- 1966-02-02 NL NL6601358A patent/NL6601358A/xx unknown
- 1966-02-11 BE BE676351D patent/BE676351A/xx unknown
- 1966-02-16 GB GB6879/66A patent/GB1117042A/en not_active Expired
- 1966-02-23 US US529250A patent/US3346363A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3896130A1 (en) * | 2020-04-17 | 2021-10-20 | Ferroglobe Innovation, S.L. | Method for obtaining coloured metal-containing powder, the powder obtained thereof and its use as metallic pigment |
| WO2021209603A1 (en) | 2020-04-17 | 2021-10-21 | Ferrogloble Innovation, S.L. | Method for obtaining coloured metal-containing powder, the powder obtained thereof and its use as metallic pigment |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1117042A (en) | 1968-06-12 |
| NL6601358A (instruction) | 1966-08-23 |
| BE676351A (instruction) | 1966-06-16 |
| DE1216903B (de) | 1966-05-18 |
| CH463713A (de) | 1968-10-15 |
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