US2290194A - Process of producing molybdenum containing alloys - Google Patents
Process of producing molybdenum containing alloys Download PDFInfo
- Publication number
- US2290194A US2290194A US352415A US35241540A US2290194A US 2290194 A US2290194 A US 2290194A US 352415 A US352415 A US 352415A US 35241540 A US35241540 A US 35241540A US 2290194 A US2290194 A US 2290194A
- Authority
- US
- United States
- Prior art keywords
- molybdenum
- silicon
- containing alloys
- silicide
- molybdenum containing
- 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
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title description 16
- 238000000034 method Methods 0.000 title description 16
- 229910052750 molybdenum Inorganic materials 0.000 title description 16
- 239000011733 molybdenum Substances 0.000 title description 16
- 229910045601 alloy Inorganic materials 0.000 title description 13
- 239000000956 alloy Substances 0.000 title description 13
- 229910021344 molybdenum silicide Inorganic materials 0.000 description 17
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 15
- 239000010703 silicon Substances 0.000 description 12
- 229910052710 silicon Inorganic materials 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 239000007769 metal material Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910001309 Ferromolybdenum Inorganic materials 0.000 description 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical class [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- 229910052961 molybdenite Inorganic materials 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 229910021346 calcium silicide Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 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
- C22C33/006—Making ferrous alloys compositions used for making ferrous alloys
Definitions
- the present invention relates to the new and useful process-for the addition of'molybdenumsilicon compounds to ferrous metals.
- the present invention has for its object the provision of a novel and improved process for the addition of molybdenum-silicon compounds to molten iron or steel.
- the solution of the added ingredients is made more rapid than heretofore, a more homogeneous alloy results, and the slag inclusions are avoided.
- I'he invention also provides a single compound which introduces a useful ratio of molybdenum and silicon into the molten metal, such as iron or steel, and giving the added commercial advantage that foundry practice can be simplified.
- this'invention provides for the addition of molybdenum-silicon compounds which react exothermically at the temperature of the molten metal, rather than absorbing heat from the metal which is disadvantageous in practice.
- the invention also has for its object the provision of a simple, effective and relatively inexpensive process for the addition of predetermined relative amounts of molybdenum and silicon to molten metals.
- the process of the present invention comprises adding a molybdenum silicide, with or without an excess of silicon, to the molten'metal, and this addition may be made to the molten improve to use the molybdenum silicide MOSi2, other molybdenum silicides may be used, such as M02813, and the like (Honigschmid, Karbide and Silizide; Wedekind and Pintsch, German Patent No. 294,267; Felder-Clement A. 0., German Patent No. 359,785; Watts, Bull, University of Wisconsin #145, pp. 294, 295 (1906)).
- molybdenum-silicon addition agent which may be used in the alloying process of the present invention
- I preferably mix a molybdenum oxide, such asroasted molybdenite concentrates or pure molybdenum trioxide with ferro-silicon, aluminium and some flexing agent, such as fluorspar.
- the mixture is then ignited in a suitable crucible, and after the slag has been tapped off, there remains a complex molybdenum silicide containing the desired proportion of molybdenum and silicon, together with a small amount of iron which is probably present as a ferro-molybdenum-silicon complex.
- the molybdenum silicides are used in substantially the same manner as is customary with i'erro-alloys, and the alloying material is added directly to the moltenhmaterial, as for instance, in the ladle, although the molybdenum silicide has a diflerent range of useiulness than the ferro-molybdenum due to its exothermic nature and by reason'o! the fact that the simultoneous addition of both molybdenum and silicon is accomplished.
- These properties combine to make the process of the present invention superior and insure the production of an alloy with superior physical properties than is frequently the case with ferro-molybdenum.
- the molybdenum containing ferrous alloy may be produced in a blast furnace or electric furnace, by mixing the molybdenum silicide in a proper quantity with the ferrous material charged to the iumace, and in this case the molybdenum silicide is dissolved in the ferrous material as the ferrous material is melted.
- the molybdenum silicide may be used to replace a portion of the now commonly used ferromolybdenum, in case a smaller proportion of silicon is desired in the final alloy, and similarly, molybdenum silicide may be used in combination with silicon addition agents, such as ferrosilicon, calcium silicide, etc., if a larger proportion of silicon is desired in the final alloy.
- the process of producing molybdenum containing alloys which comprises mixing a molybdenum silicide with material to be alloyed and dissolving the molybdenum silicide in the metallic material at a temperature sufllcient to melt the metallic material.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Silicon Compounds (AREA)
Description
Patented July '21, 1942 PRDCESS OF PRODUCING MOLYBDENUM CONTAINING ALLOYS Arthur Linz, New York, N. Y., assignor to Climax Molybdenum Company, New York, poration of Delaware N. Y., a cor- No Drawing. Application August 13, 1940, Serial No. 352,415
4 Claims.
The present invention relates to the new and useful process-for the addition of'molybdenumsilicon compounds to ferrous metals.
Objects and advantages of th'e' lnvention will be set forth in part hereinafter and in part will be obvious herefrom, or may be learned by practies with the invention, the same being realized of which require special care to produce dhUlllO-f geneous resulting alloy. It has also been pro posed to add molybdenum and silicon to molten iron or steel by using a mixture of molybdenum trloxide and silicon, but this process has'not come into commercial use due to the nature of the reaction which takes place at the temperature of the molteniron or steel, and also because it disperses the slag which it forms causing inclusions of silica slag.
The present invention has for its object the provision of a novel and improved process for the addition of molybdenum-silicon compounds to molten iron or steel. By this process the solution of the added ingredients is made more rapid than heretofore, a more homogeneous alloy results, and the slag inclusions are avoided. I'he invention also provides a single compound which introduces a useful ratio of molybdenum and silicon into the molten metal, such as iron or steel, and giving the added commercial advantage that foundry practice can be simplified. Furthermore, this'invention provides for the addition of molybdenum-silicon compounds which react exothermically at the temperature of the molten metal, rather than absorbing heat from the metal which is disadvantageous in practice. The invention also has for its object the provision of a simple, effective and relatively inexpensive process for the addition of predetermined relative amounts of molybdenum and silicon to molten metals.
In general, the process of the present invention comprises adding a molybdenum silicide, with or without an excess of silicon, to the molten'metal, and this addition may be made to the molten improve to use the molybdenum silicide MOSi2, other molybdenum silicides may be used, such as M02813, and the like (Honigschmid, Karbide and Silizide; Wedekind and Pintsch, German Patent No. 294,267; Felder-Clement A. 0., German Patent No. 359,785; Watts, Bull, University of Wisconsin #145, pp. 294, 295 (1906)).
While various processes may be used for the preparation of the molybdenum-silicon addition agent, which may be used in the alloying process of the present invention, I preferably mix a molybdenum oxide, such asroasted molybdenite concentrates or pure molybdenum trioxide with ferro-silicon, aluminium and some flexing agent, such as fluorspar. The mixture is then ignited in a suitable crucible, and after the slag has been tapped off, there remains a complex molybdenum silicide containing the desired proportion of molybdenum and silicon, together with a small amount of iron which is probably present as a ferro-molybdenum-silicon complex.
The relative amounts of these substances may be varied widely, dependent upon the desired composition of the resulting product, but as a typical example I may use the following:
Kilograms Molybdenum in roasted molybdenite concentrates 100 Ferrosilicon (75%) 60 Aluminium Fluorspar 15 A typical analysis of the product of the reaction of such a mixture is:
Percent Mo 5'7. Si 30.00 Al 21 S102 2. 54 CaO 3. 60 A: 6. 98
metal in the ladle, or elsewhere, while I prefer 55 be crushed to form smaller lumps oi the alloying material which can be weighed out. into convenient amounts for addition to the moltenmetal.
In use, the molybdenum silicides are used in substantially the same manner as is customary with i'erro-alloys, and the alloying material is added directly to the moltenhmaterial, as for instance, in the ladle, although the molybdenum silicide has a diflerent range of useiulness than the ferro-molybdenum due to its exothermic nature and by reason'o! the fact that the simultoneous addition of both molybdenum and silicon is accomplished. These properties combine to make the process of the present invention superior and insure the production of an alloy with superior physical properties than is frequently the case with ferro-molybdenum.
If desired, the molybdenum containing ferrous alloy may be produced in a blast furnace or electric furnace, by mixing the molybdenum silicide in a proper quantity with the ferrous material charged to the iumace, and in this case the molybdenum silicide is dissolved in the ferrous material as the ferrous material is melted.
Alternatively, the molybdenum silicide may be used to replace a portion of the now commonly used ferromolybdenum, in case a smaller proportion of silicon is desired in the final alloy, and similarly, molybdenum silicide may be used in combination with silicon addition agents, such as ferrosilicon, calcium silicide, etc., if a larger proportion of silicon is desired in the final alloy.
While the process has been described principally in connection with the production of ferrous alloys having a molybdenum and silicon content, the process may also be applied to the production of non-ferrous alloys, such as aluminum and magnesium alloys.
The invention in its broader aspects is not limited to the specific steps and procedures described but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of the invention and without sacrificing its chief advantages.
What I claim is:
1. The process of producing molybdenum containing alloys which comprises mixing a molybdenum silicide with material to be alloyed and dissolving the molybdenum silicide in the metallic material at a temperature sufllcient to melt the metallic material.
2. The process of producing molybdenum containing alloys which comprises adding a molybdenum silicide to molten metallic material.
3. The process of producing molybdenum containing alloys which comprises adding a molybdenum silicide to metallic material and melting the metallic material to dissolve and absorb the molybdenum silicide.
4. The process of producing molybdenum containing alloys which comprises mixing a molybdenum silicide with a metallic material at a temperature sufficient to dissolve the molybdenum silicide in the metallic material.
ARTHUR LINZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US352415A US2290194A (en) | 1940-08-13 | 1940-08-13 | Process of producing molybdenum containing alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US352415A US2290194A (en) | 1940-08-13 | 1940-08-13 | Process of producing molybdenum containing alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2290194A true US2290194A (en) | 1942-07-21 |
Family
ID=23385030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US352415A Expired - Lifetime US2290194A (en) | 1940-08-13 | 1940-08-13 | Process of producing molybdenum containing alloys |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2290194A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2542177A (en) * | 1949-06-25 | 1951-02-20 | Union Carbide & Carbon Corp | Manufacture of chromium steels |
| US2665474A (en) * | 1950-03-18 | 1954-01-12 | Fansteel Metallurgical Corp | Highly refractory molybdenum alloys |
| US2831242A (en) * | 1953-03-25 | 1958-04-22 | Schwarzkopf Dev Co | Sintered electric resistance heating element |
-
1940
- 1940-08-13 US US352415A patent/US2290194A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2542177A (en) * | 1949-06-25 | 1951-02-20 | Union Carbide & Carbon Corp | Manufacture of chromium steels |
| US2665474A (en) * | 1950-03-18 | 1954-01-12 | Fansteel Metallurgical Corp | Highly refractory molybdenum alloys |
| US2831242A (en) * | 1953-03-25 | 1958-04-22 | Schwarzkopf Dev Co | Sintered electric resistance heating element |
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