US2169090A - Sintered hard metal alloy - Google Patents
Sintered hard metal alloy Download PDFInfo
- Publication number
- US2169090A US2169090A US264588A US26458839A US2169090A US 2169090 A US2169090 A US 2169090A US 264588 A US264588 A US 264588A US 26458839 A US26458839 A US 26458839A US 2169090 A US2169090 A US 2169090A
- Authority
- US
- United States
- Prior art keywords
- carbide
- alloy
- hard metal
- metal alloy
- alloys
- 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
Images
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
- C22C29/08—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 based on tungsten carbide
Definitions
- This object is achieved according to our invention by adding to a sintered hard alloy consisting in known manner of a mixture of tungsten carbide, from 5 to 20% titanium carbide, and from 6 to 12% of an auxiliary metal of lower melting point such as iron, nickel or cobalt, further from 0.5 to 2% vanadium carbide and from 0.5 to 2% molybdenum carbide.
- compositions of three alloys the first of which is a usual alloy which does not contain titanium carbide and is suited for machining grey cast iron, whilst the second is an alloy which contains titanium carbideand is intended for machining steel, the toughness of this alloy being adapted to that of 'the first-named alloy bya higher cobalt propor-
- these alloys containing titanium carbide can be used, it is true, in themselves also for machining materials, giving short chips such as grey cast iron, the running times obtained with these alloys in machining grey cast iron difiering butslightly from those of alloys not containing titanium carbide.
- the alloys containing titanium carbide are somewhat more brittle than the latter so that in this respect they are inferior to them.
- hard metals containing titanium carbide exhibit notably shorter running times than those not containing titanium carbide.
- the third all0i5 finally, has a composition according to our present invention.
- a sintered hard metal alloy for tools and working implements consisting of a mixture of tungsten carbide, from 5 to 20% titanium carbide, from 6 to 12% of an auxiliary metal of lower melting point such as iron, nickel, cobalt, from 0.5 to 2% vanadium carbide, and from 0.5 to 2% molybdenum carbide.
- WALTHER QAWII-Hl A sintered hard metal alloy for tools and working implements, consisting of a mixture of tungsten carbide, from 5 to 20% titanium carbide, from 6 to 12% of an auxiliary metal of lower melting point such as iron, nickel, cobalt, from 0.5 to 2% vanadium carbide, and from 0.5 to 2% molybdenum carbide.
Description
Patented Aug; 8, 1939 ICE . sm'mnan HARD'METAL ALLOY Walther 'Dawihl, Berlin-Kohihasenbruck, and Karl Schriiter, Berlin, Germany, assignors to General Electric Company, a corporation of New York No Drawing. Application March 28. 1939, Serial No. 264;,588, In Germany August 27, 1938 1 Claim. (01. 75-136) Our invention has for its object a sintered hard metal alloy; for tools and working implements. The practical use ofhard metal has developed in such a manner that for machining materials giving short chips, such as grey cast iron, alloys of a composition are used which differs from that of alloys used for machining materials giving long chips, in particular steel. In the first case, .that is, for machining greycast iron, in general alloys are made use of which contain tungsten carbide and metals of lower melting point, such as cobalt, nickel or iron. small additions of chromium, molybdenum and tungsten are recommended for these alloys. The hard alloys intended for machining material giving longchips, in particular steel, contain besides tungsten carbide in the most cases a further hard carbide such as titanium carbide, tantalum carbide or zirconium carbide. The favorable efiect of this second hard carbide added to the tungsten carbide consists in that it reduces the cratering action exerted by the tough running-oil chip on the face of the hard metal cutting tip of the tool. In practice titanium carbide has been found to be the most advantageous carbide to be added to the tungsten carbide.
Sometimes further wear. This object is achieved according to our invention by adding to a sintered hard alloy consisting in known manner of a mixture of tungsten carbide, from 5 to 20% titanium carbide, and from 6 to 12% of an auxiliary metal of lower melting point such as iron, nickel or cobalt, further from 0.5 to 2% vanadium carbide and from 0.5 to 2% molybdenum carbide.
In the following are given the compositions of three alloys the first of which is a usual alloy which does not contain titanium carbide and is suited for machining grey cast iron, whilst the second is an alloy which contains titanium carbideand is intended for machining steel, the toughness of this alloy being adapted to that of 'the first-named alloy bya higher cobalt propor- Now these alloys containing titanium carbide can be used, it is true, in themselves also for machining materials, giving short chips such as grey cast iron, the running times obtained with these alloys in machining grey cast iron difiering butslightly from those of alloys not containing titanium carbide. The alloys containing titanium carbide, however, are somewhat more brittle than the latter so that in this respect they are inferior to them. Therefore, when the hard metal tips in machining grey cast iron are stressed to a comparatively great extent as to their toughness, as, for example, in turning work pieces provided with grooves, hard metals containing titanium carbide exhibit notably shorter running times than those not containing titanium carbide.
For this reason one and the same hard alloy could not be used hitherto with the same good the resistance to wear of the alloy is diminished thereby to an undesirable extent.
, We have now found that it is possible to ob- .tain a higher toughness of the alloys referred to-without any reduction of their resistance to tion. The third all0i5 finally, has a composition according to our present invention.
The values of the wear occurring in the use of ness of 200. The cutting speed amounted to 120 m. per minute, the feed was 0.31 mm. per revolution, and the depth of out was 2.5 mm. As will be seen, the blunting of our new alloy, viz., alloy 3, is even lower than that of the alloy 1 the'composition of which hitherto has been considered as particularly advantageous for machining grey cast iron.
As a consequence of its resistance to the eratering effect of the running ofi chips, which resistance is caused by the titanium carbide con.- tent, our new alloy in machining steel isequivalent to the alloy 2 and is far superior to alloy 1. In machining steel, the increased toughness of our new alloy even permits great feeds, for ex? ample of 2 mm. per revolution, great depths of cut, such as for example 40 mm., and, besides, comparatively low cutting speeds. v
What we claim and desire to secure by Letters Patent is- A sintered hard metal alloy for tools and working implements, consisting of a mixture of tungsten carbide, from 5 to 20% titanium carbide, from 6 to 12% of an auxiliary metal of lower melting point such as iron, nickel, cobalt, from 0.5 to 2% vanadium carbide, and from 0.5 to 2% molybdenum carbide. WALTHER QAWII-Hl.
KARL SCHROTER.
CERTIFIQATE OF CORRECTION. 7P
r Au st a, 19 9.
r WAL'I'HER DAWIHL, ET AL. It is hereby certified. I of the above numbered petent requiring c orreetion as follows: Second column, line 2b., in the table, for"'O. read 0.5; end that the said-Letters Patent should be read with this correction therein that the saris may conform to the record of the ease inthe Patent Office.
Signed and sealecl this-v 26th. 1ay 91f Septemb er, A.. D. 1959.
Henry Van Arsdale (Seal) Acting Commie sioner of Patents.
that error appeers in the printed s peeificatien
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2169090X | 1938-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2169090A true US2169090A (en) | 1939-08-08 |
Family
ID=7988322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US264588A Expired - Lifetime US2169090A (en) | 1938-08-27 | 1939-03-28 | Sintered hard metal alloy |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2169090A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE918050C (en) * | 1950-06-03 | 1954-09-16 | Boehler & Co Ag Geb | Hard metal alloy |
| US2994124A (en) * | 1955-10-03 | 1961-08-01 | Gen Electric | Clad cermet body |
| US3245763A (en) * | 1963-07-01 | 1966-04-12 | Sandvikens Jernverks Ab | Sintered hard metal alloy for machining cast iron and steel |
-
1939
- 1939-03-28 US US264588A patent/US2169090A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE918050C (en) * | 1950-06-03 | 1954-09-16 | Boehler & Co Ag Geb | Hard metal alloy |
| US2994124A (en) * | 1955-10-03 | 1961-08-01 | Gen Electric | Clad cermet body |
| US3245763A (en) * | 1963-07-01 | 1966-04-12 | Sandvikens Jernverks Ab | Sintered hard metal alloy for machining cast iron and steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR920010860B1 (en) | Cemented carbide drill | |
| US3482295A (en) | Tools and tool tips of sintered hard metal | |
| US1057423A (en) | Metal alloy. | |
| US4619698A (en) | Cubic boron nitride-based very high pressure-sintered material for cutting tools | |
| US2169090A (en) | Sintered hard metal alloy | |
| US2198343A (en) | Hard metal composition | |
| US2731710A (en) | Sintered carbide compositions | |
| US1599425A (en) | Steel | |
| JPH02180517A (en) | New ceramics solid end mill | |
| US2972287A (en) | Milling of metals subject to galling | |
| US2015536A (en) | Sintered hard metal alloy | |
| US2924875A (en) | Sintered hard metal alloy | |
| US2278315A (en) | Manufacture of high speed steels | |
| US2551170A (en) | Cobalt base alloy and articles thereof | |
| SE500134C2 (en) | End mill with a core of quick or tool steel and a casing of hard material | |
| US2204283A (en) | Tool steel | |
| JP3206972B2 (en) | Fine-grain cemented carbide | |
| US2067166A (en) | Tantalum carbide alloy | |
| US2128146A (en) | Sintered hard metal alloys | |
| JPS6125762B2 (en) | ||
| US2209622A (en) | High speed steel | |
| US2233443A (en) | Alloy and cutting tool made therefrom | |
| US2166795A (en) | Sintered hard alloy for machining hard castings | |
| US2074847A (en) | Hard alloy | |
| US3295964A (en) | Titanium-tantalum high-speed steel |