US1947206A - Cemented columbium carbide - Google Patents
Cemented columbium carbide Download PDFInfo
- Publication number
- US1947206A US1947206A US515897A US51589731A US1947206A US 1947206 A US1947206 A US 1947206A US 515897 A US515897 A US 515897A US 51589731 A US51589731 A US 51589731A US 1947206 A US1947206 A US 1947206A
- Authority
- US
- United States
- Prior art keywords
- carbide
- cemented
- columbium
- binder
- iron
- 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
- 239000010955 niobium Substances 0.000 title description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 title description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 16
- 239000000203 mixture Substances 0.000 description 15
- 239000011230 binding agent Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052750 molybdenum Inorganic materials 0.000 description 5
- 239000011733 molybdenum Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000010941 cobalt Substances 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920001875 Ebonite Polymers 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 206010073261 Ovarian theca cell tumour Diseases 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- ZPPSOOVFTBGHBI-UHFFFAOYSA-N lead(2+);oxido(oxo)borane Chemical compound [Pb+2].[O-]B=O.[O-]B=O ZPPSOOVFTBGHBI-UHFFFAOYSA-N 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 208000001644 thecoma Diseases 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
- C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
Definitions
- the present invention relates to cemented carbide compositions but more particularly to a cemented carbide composition consisting mainly of columbium carbide but containing an appreciable amount of a binder-material havinga lower melting pointthan the carbide.
- columbium carbide is flrst prepared by mixing in a ball mill 187 grams of columbium with 23.6 grams of carbon,
- the carbide thus produced is-milled for several hours to break it upinto a fine powder capable of passing through a 325 mesh screen. It is then mixed with a suitable powdered binder material which has also been ground to a similar degree "of fineness and which has a lower melting point than the carbide. This mixture is then ground in a ball mill for several hours until it also is capable of passing through a 325 mesh screen,
- the powdered material thus formed is placed in a mold and subjected to a pressure of about 30 tons per square inch.
- the pressed material which may be handled easily, is then sintered in a closed graphite tube in a hydrogen furnace for about 1 hours.
- the sintering temperature may vary from about 1300 C. to 1600" C. depending on the binder or cementing material employed in the composition.
- the present invention is not limited to any particular cementing material.
- I may employ various elements of the iron group, e. g. nickel, iron or cobalt either alone or in combination with one another.
- 1 may also employ as the binder material various powdered mixtures consisting of metals of the iron group with metals of the 6th group-of Mendelejefis periodic table of elements.
- I have employed nickel, iron and cobalt each one taken alone as binder elements for columbium carbide.
- I have also employed each of these elements in combination with tungsten or molybdenum.
- the binder material consists of an element of the iron. group with an element of thefith group, the composition of the binder may vary widely.
- binders consisting of a mixture of iron and molybdenum in which the iron has varied from about 10 to about 90% and the molybdenum from 90% to 10%, the lower percentage of iron being associated with the higher percentage of molybdenum and vice verse.
- the quantity of binder material employed usually will not comprise more than 13% of the composition. It may however be as high as 25% and as low as 3%, the remainder of the coma position being columbium carbide.
- Cemented columbium carbide will cut steel but it is not particularly well adapted for such work. It will however cut in a satisfactory manner materials such as hard rubber or Mycalex, the latter being the trade name of a material consisting of about 40% lead borate and about 60% mica.
- a sintered composition containing about 3 to 25% of a binder material, the remainder of said composition consisting of columbium carbide, said binder consisting of about 10% to about of metal of the iron group and about 10% to about 90% of metal of the 6th group of Mendelejefi's, periodic table oi. elements.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Description
Patented Feb. 13, 1934 1.947.200 CEMEN'I'ED cormmrom ricya'c. Kelley, Schenectady, N. Y., assignor .to General Electric Company, a corporation of New York No Drawing. Application February 14, 1931 Serial No. 515,897
2 Claims? The present invention relates to cemented carbide compositions but more particularly to a cemented carbide composition consisting mainly of columbium carbide but containing an appreciable amount of a binder-material havinga lower melting pointthan the carbide.
In my copending application Serial No. 496,826, filed November 19, 1930, I have disclosed a cemented carbide consisting of a mixture of tantac lum carbide and columbiinn carbide with a binder or cementing medium. A tool of this character is particularly adapted for cutting steel, cast iron, hard rubber and like material. I have found however that columbium carbide may be employed'as the main ingredient of a cemented carbide composition, the remainder of the composition consisting of a binder or cementing ma- 'terial having a lower melting point .than the carbide.
In carrying out my invention, columbium carbide is flrst prepared by mixing in a ball mill 187 grams of columbium with 23.6 grams of carbon,
is carried out in a closed graphite tube which is heated in a hydrogen furnace as disclosed in my copending application, Serial No. 308,565, flied September 26, 1928.
The carbide thus produced is-milled for several hours to break it upinto a fine powder capable of passing through a 325 mesh screen. It is then mixed with a suitable powdered binder material which has also been ground to a similar degree "of fineness and which has a lower melting point than the carbide. This mixture is then ground in a ball mill for several hours until it also is capable of passing through a 325 mesh screen,
The powdered material thus formed is placed in a mold and subjected to a pressure of about 30 tons per square inch. The pressed material, which may be handled easily, is then sintered in a closed graphite tube in a hydrogen furnace for about 1 hours. The sintering temperature may vary from about 1300 C. to 1600" C. depending on the binder or cementing material employed in the composition.
The present invention is not limited to any particular cementing material. I may employ various elements of the iron group, e. g. nickel, iron or cobalt either alone or in combination with one another. If' desired, 1 may also employ as the binder material various powdered mixtures consisting of metals of the iron group with metals of the 6th group-of Mendelejefis periodic table of elements. I have employed nickel, iron and cobalt each one taken alone as binder elements for columbium carbide. I have also employed each of these elements in combination with tungsten or molybdenum. When the binder material consists of an element of the iron. group with an element of thefith group, the composition of the binder may vary widely. For example, I have employed binders consisting of a mixture of iron and molybdenum in which the iron has varied from about 10 to about 90% and the molybdenum from 90% to 10%, the lower percentage of iron being associated with the higher percentage of molybdenum and vice verse. I have also employed varying proportions oi. nickel or cobalt with molybdenum or tungsten.
The quantity of binder material employed usually will not comprise more than 13% of the composition. It may however be as high as 25% and as low as 3%, the remainder of the coma position being columbium carbide.
Cemented columbium carbide will cut steel but it is not particularly well adapted for such work. It will however cut in a satisfactory manner materials such as hard rubber or Mycalex, the latter being the trade name of a material consisting of about 40% lead borate and about 60% mica.
What I claim as new and desire to secure by Letters Patent of the United States, is:
1. A sintered composition containing about 3% to about 25% of a metallic binder material, the remainder of said composition consisting substantially of columbium carbide, said binder material having a lower melting point than said carbide and consisting mainly of metal of the iron group.
2. A sintered composition containing about 3 to 25% of a binder material, the remainder of said composition consisting of columbium carbide, said binder consisting of about 10% to about of metal of the iron group and about 10% to about 90% of metal of the 6th group of Mendelejefi's, periodic table oi. elements. Y
FLOYD C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US515897A US1947206A (en) | 1931-02-14 | 1931-02-14 | Cemented columbium carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US515897A US1947206A (en) | 1931-02-14 | 1931-02-14 | Cemented columbium carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1947206A true US1947206A (en) | 1934-02-13 |
Family
ID=24053221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US515897A Expired - Lifetime US1947206A (en) | 1931-02-14 | 1931-02-14 | Cemented columbium carbide |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1947206A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB385631I5 (en) * | 1971-05-26 | 1976-01-27 | ||
| WO1994011128A1 (en) * | 1992-11-18 | 1994-05-26 | The Broken Hill Proprietary Company Limited | A composite roll |
-
1931
- 1931-02-14 US US515897A patent/US1947206A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USB385631I5 (en) * | 1971-05-26 | 1976-01-27 | ||
| US3982924A (en) * | 1971-05-26 | 1976-09-28 | Reading Alloys, Inc. | Process for producing carbide addition agents |
| WO1994011128A1 (en) * | 1992-11-18 | 1994-05-26 | The Broken Hill Proprietary Company Limited | A composite roll |
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