US2137144A - Process for the production of metal carbides - Google Patents
Process for the production of metal carbides Download PDFInfo
- Publication number
- US2137144A US2137144A US170703A US17070337A US2137144A US 2137144 A US2137144 A US 2137144A US 170703 A US170703 A US 170703A US 17070337 A US17070337 A US 17070337A US 2137144 A US2137144 A US 2137144A
- Authority
- US
- United States
- Prior art keywords
- metal
- production
- carbide
- carbides
- mixture
- 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
- 229910052751 metal Inorganic materials 0.000 title description 13
- 239000002184 metal Substances 0.000 title description 13
- 150000001247 metal acetylides Chemical class 0.000 title description 9
- 238000000034 method Methods 0.000 title description 8
- 238000004519 manufacturing process Methods 0.000 title description 4
- 239000000203 mixture Substances 0.000 description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 9
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 8
- 238000005255 carburizing Methods 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 235000019270 ammonium chloride Nutrition 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 229910052804 chromium Inorganic materials 0.000 description 3
- 239000011651 chromium Substances 0.000 description 3
- 235000011118 potassium hydroxide Nutrition 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001309 Ferromolybdenum Inorganic materials 0.000 description 1
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 241001028048 Nicola Species 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- -1 chomium Chemical compound 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
- C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
Definitions
- This invention relates to the production of carbides of metals such as iron, tungsten, titanium, chomium, and molybdenum but is not concerned merely with the formation of a surface zone of carbides on such metals.
- the object of the present invention is to devise an improved process for the formation of such carbides by which good quality carbides will be obtained and the invention consists in a process for the production of metal carbides which consists in heating the metal (of which the carbide is to be formed) in a finely divided condition in admixture with a carburizing mixture containing manganese dioxide, in a hermetically sealed box.
- the metal to be treated for example, in the form of ferro tungsten or tungsten metal, form titanium or titanium metal, ferro molybdenum or molybdenum metal, or the like is finely divided as by grinding and mixed with the carburizing mixture and packed in a hermetically sealed box in such a manner to avoid so far as possible the occlusion of air but in actual operation under heat the ammonium chloride will expelthe occluded air from the mixture.
- the sealed box is heated in a furnace to a temperature of 1200 C. for about 1 to 2 hours 46 and. the metal carbide obtained by the process after cooling slowly while protected from the air,
- the ingredients and proportions would be:
- the carbides produced by my process contain no manganese, or if manganese be present, it is in so small a quantity as not to affect the properties of the carbide.
- I may vary the constituents in my improved mixture and the proportions in which they are incorporated and the temperature at which the carburizing process is carried out depending upon the nature of the metal to be treated or any practical requirements which may have to be fulfilled.
- the process for the production of metal carbides which consists in heating at least one metal selected from the group consisting of iron, tungsten, titanium, chromium, and molybdenum in a finely divided condition in admixture with a carburizing mixture consisting of charcoal, manganese dioxide, caustic potash and ammonium chloride.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Description
Patented Nov. 15, 1938' UNITED STATES PATENT OFFICE Nicolas Sainderichin, Paris, France, assignor to Follsain Syndicate Limited, London, England No Drawing. Application October 23, 1937, Serial No. 170,703. In Great Britain January 9,
3 Claims.
This invention relates to the production of carbides of metals such as iron, tungsten, titanium, chomium, and molybdenum but is not concerned merely with the formation of a surface zone of carbides on such metals.
The object of the present invention is to devise an improved process for the formation of such carbides by which good quality carbides will be obtained and the invention consists in a process for the production of metal carbides which consists in heating the metal (of which the carbide is to be formed) in a finely divided condition in admixture with a carburizing mixture containing manganese dioxide, in a hermetically sealed box.
Further features of the invention will be apparent from the description given hereafter.
In carrying my invention into effect in one convenient manner I form my improved carburizing material for the formation of metal carbides from a mixture of finely divided charcoal or other suitable form of carbon, caustic potash, manganese dioxide and ammonium chloride and while the proportions in which the various ingredients are mixed together may be varied to suit any particular requirements, I find the following mixture to be suitable, namely,
Kilograms Finely divided charcoal 1. 3o Caustic potash 0.15
Manganese dioxide 0.1 to 0.3 Ammonium chloride 0.05
The metal to be treated, for example, in the form of ferro tungsten or tungsten metal, form titanium or titanium metal, ferro molybdenum or molybdenum metal, or the like is finely divided as by grinding and mixed with the carburizing mixture and packed in a hermetically sealed box in such a manner to avoid so far as possible the occlusion of air but in actual operation under heat the ammonium chloride will expelthe occluded air from the mixture.
The sealed box is heated in a furnace to a temperature of 1200 C. for about 1 to 2 hours 46 and. the metal carbide obtained by the process after cooling slowly while protected from the air,
may be utilized for any desired purpose. For
example, when producing an alloy in which high hardness and great toughness are required I may use a mixture resulting in a product having the following proportions:
, Percent Carbide of iron 30 Carbide of tungsten For a tool steel I should use a mixture consisting of Percent Carbide of iron 20 Carbide of tungsten 70 Carbide of chromium 10 For dies, the ingredients and proportions would be:
Percent Carbide of iron Carbide of chromium 25 The carbides produced by my process contain no manganese, or if manganese be present, it is in so small a quantity as not to affect the properties of the carbide.
I may vary the constituents in my improved mixture and the proportions in which they are incorporated and the temperature at which the carburizing process is carried out depending upon the nature of the metal to be treated or any practical requirements which may have to be fulfilled.
I claim:
1. The process for the production of metal carbides which consists in heating at least one metal selected from the group consisting of iron, tungsten, titanium, chromium, and molybdenum in a finely divided condition in admixture with a carburizing mixture consisting of charcoal, manganese dioxide, caustic potash and ammonium chloride.
2. A process as claimed in claim 1 wherein the carburizing mixture consists of 100 parts char
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2137144X | 1936-01-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2137144A true US2137144A (en) | 1938-11-15 |
Family
ID=10899469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US170703A Expired - Lifetime US2137144A (en) | 1936-01-09 | 1937-10-23 | Process for the production of metal carbides |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2137144A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2507218A (en) * | 1941-07-04 | 1950-05-09 | Lorraine Carbone | Manufacture of hard sintered alloys |
| US2515463A (en) * | 1948-03-19 | 1950-07-18 | Kennametal Inc | Process for making titanium carbide |
| US2529778A (en) * | 1949-01-12 | 1950-11-14 | Kennametal Inc | Process for making tungsten monocarbide from tungsten-containing material |
| US2733134A (en) * | 1956-01-31 | Method for making titanium carbide | ||
| US3401018A (en) * | 1965-04-15 | 1968-09-10 | Denki Kagaku Kogyo Kk | Method of producing boron carbide |
| US3999981A (en) * | 1974-08-05 | 1976-12-28 | Ontario Research Foundation | Production and recovery of metallic carbides from ores and concentrates |
| US4256496A (en) * | 1977-12-16 | 1981-03-17 | Ontario Research Foundation | Production of metal carbides in pure form |
| US4834963A (en) * | 1986-12-16 | 1989-05-30 | Kennametal Inc. | Macrocrystalline tungsten monocarbide powder and process for producing |
-
1937
- 1937-10-23 US US170703A patent/US2137144A/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2733134A (en) * | 1956-01-31 | Method for making titanium carbide | ||
| US2507218A (en) * | 1941-07-04 | 1950-05-09 | Lorraine Carbone | Manufacture of hard sintered alloys |
| US2515463A (en) * | 1948-03-19 | 1950-07-18 | Kennametal Inc | Process for making titanium carbide |
| US2529778A (en) * | 1949-01-12 | 1950-11-14 | Kennametal Inc | Process for making tungsten monocarbide from tungsten-containing material |
| US3401018A (en) * | 1965-04-15 | 1968-09-10 | Denki Kagaku Kogyo Kk | Method of producing boron carbide |
| US3999981A (en) * | 1974-08-05 | 1976-12-28 | Ontario Research Foundation | Production and recovery of metallic carbides from ores and concentrates |
| US4256496A (en) * | 1977-12-16 | 1981-03-17 | Ontario Research Foundation | Production of metal carbides in pure form |
| US4834963A (en) * | 1986-12-16 | 1989-05-30 | Kennametal Inc. | Macrocrystalline tungsten monocarbide powder and process for producing |
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