US3623864A - Machinable alloy - Google Patents
Machinable alloy Download PDFInfo
- Publication number
- US3623864A US3623864A US28045A US3623864DA US3623864A US 3623864 A US3623864 A US 3623864A US 28045 A US28045 A US 28045A US 3623864D A US3623864D A US 3623864DA US 3623864 A US3623864 A US 3623864A
- Authority
- US
- United States
- Prior art keywords
- alloys
- selenium
- alloy
- manganese
- nickel
- 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
- 229910045601 alloy Inorganic materials 0.000 title abstract description 22
- 239000000956 alloy Substances 0.000 title abstract description 22
- 229910052711 selenium Inorganic materials 0.000 abstract description 15
- 239000011669 selenium Substances 0.000 abstract description 15
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract description 14
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052748 manganese Inorganic materials 0.000 abstract description 11
- 239000011572 manganese Substances 0.000 abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 229910052759 nickel Inorganic materials 0.000 abstract description 5
- 238000007792 addition Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- KGWWEXORQXHJJQ-UHFFFAOYSA-N [Fe].[Co].[Ni] Chemical compound [Fe].[Co].[Ni] KGWWEXORQXHJJQ-UHFFFAOYSA-N 0.000 description 1
- NRUQNUIWEUZVLI-UHFFFAOYSA-O diethanolammonium nitrate Chemical compound [O-][N+]([O-])=O.OCC[NH2+]CCO NRUQNUIWEUZVLI-UHFFFAOYSA-O 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000779 smoke 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
- C22C19/00—Alloys based on nickel or cobalt
Definitions
- Certain alloys of the nickel-iron p are used in I found that when the selenium content was reduced ing seals between metals and glass or metals and cerambelow about .l% and the manganese content was reics as well as in other applications wherein the thermal **d simultaneously below 0.5%, the machinability coeificients of expansion and other properties are critical. characteristics were not substantially improved as com- The e alloy ar chafacteyizgd b h d i bl pared to known alloys. When the selenium content was property of poor machinability.
- any increase of selenium content must be accompanied by an increase (not necessarily a proportional increase) in the manganese content
- any increase of selenium content must be accompanied by an increase (not necessarily a proportional increase) in the manganese content
- the addition of selenium in amounts falling wthin the range 0.1% to 0.4% (by weight) coupled with the simultaneous addition of manganese in amounts falling within the range 0.5%-2.0% to a nickel-iron alloy comprising %52% nickel, balto maintain forgeabflity ance iron results in alloys with sharply enhanced ma- What is claimed is: chinability at the same time with Otherwise l.
- a freely machinable alloy consisting essentially of, stantially unchanged physical and mechanical properties. 50 as expressed in percent b i As a result, excesslve tool weal no longer takes place.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Abstract
A FREELY MACHINABLE ALLOY COMPRISING, AS EXPRESSED IN PERCENT BY WEIGHT:
NICKEL: 50.0%-52.0% SELENIUM: 0.1%-0.4% MANGANESE: 0.5%-2.0% IRON: BALANCE
NICKEL: 50.0%-52.0% SELENIUM: 0.1%-0.4% MANGANESE: 0.5%-2.0% IRON: BALANCE
Description
cordance with the different r.p.m. and feed rates set 3,623,864 forth in Table I below: MAfiHENAlBLE ALLOY TABLE I George A. Maiesko, Glen Ridge, NJL, assignor to Willanr B. Driver Qornpany 5 t 1 Feed rate, Surface, N Drawing. Filed APT. 9 1970, Ser- No. 28,045 lame 01 in 1110 res r.p.m. inches/rev. feet/minute lint. Cl. C222 19/00 530 .002; 5g 0 7 US. Cl. 75 170 3 Claims 510 88 93 665 .0042 113 867 .0042 142 l'ii 333 iii I i9 0 ABSTRACT OF 1H2 DlsCLOSURE 1,600 99 3 8 A freely machinable alloy comprising, as expressed in {288 138 o 1,600 .0135 100 pcrcent by wei ht. P 55 7 Nickel: 50.0% 52.0% 11383 13 8 is; Selenium: 0.l%0.4% 1,600 0 15 1, 384 47 Manganese: 0.5%2.0% 600 0 1 Iron: Balance; For constant depth of cut (.025") and feed rate i (.0042 inches/rev.) the selenium-containing alloys could CROSS REFERENCE To RELATED be turned on a lathe at 241 surface feet per minute with APPL 1c ATIONS no undesirable effects. The work piece remained cool. The selenium free alloys became very hot at 72 surface In c0-pending patent application S.N. 873,508, filed feet per minute and the machining lubricant began to Nov. 3, 1969, selenium additions to different alloys, smoke n surface feet per minute causing a sharp namely iron-nickel-cobalt alloys, are disclosed by the detenoranon of the Surface finlshsame inventor and assigned to the same assignee as the At a Constant of 1600 and a depth of cut of .025", the selenium containing alloys could be fed in a trouble free manner at rates ranging from .0042 to .0384 inches/rev. Under the same conditions the selepresent application. The alloys contemplated herein are nickel-iron-alloys.
SUMMARY OF THE INVENTION, nium-free alloys ruined the tool when the feed rate was increased beyond .0060 inches/rev.
Certain alloys of the nickel-iron p are used in I found that when the selenium content was reduced ing seals between metals and glass or metals and cerambelow about .l% and the manganese content was reics as well as in other applications wherein the thermal duced simultaneously below 0.5%, the machinability coeificients of expansion and other properties are critical. characteristics were not substantially improved as com- The e alloy ar chafacteyizgd b h d i bl pared to known alloys. When the selenium content was property of poor machinability. As a result, tools used increased about 04% and the manganese cohtfiht in shaping such alloys wear much too rapidly, even when ihcfeased slmullahgousll above the machlflablhty the machining is carried out at relatively low speeds and charactenstic s were not degraded but the thermal expan' feed rates. sion propertles of the alloys began to vary beyond the ranges specified and required. As long as the selenium and manganese additions are maintained Within the ranges set forth herein, any increase of selenium content must be accompanied by an increase (not necessarily a proportional increase) in the manganese content I have discovered that the addition of selenium in amounts falling wthin the range 0.1% to 0.4% (by weight) coupled with the simultaneous addition of manganese in amounts falling within the range 0.5%-2.0% to a nickel-iron alloy comprising %52% nickel, balto maintain forgeabflity ance iron, results in alloys with sharply enhanced ma- What is claimed is: chinability at the same time with Otherwise l. A freely machinable alloy consisting essentially of, stantially unchanged physical and mechanical properties. 50 as expressed in percent b i As a result, excesslve tool weal no longer takes place. Nickel: 50.0% 520% DETAILED DESCRIPTION OF PREFERRED Selenium: 0.l%0.4%
MB DI Manganese: 0.5%-2.0%
Iron: Balance A first plurality of alloys were fabricated with com- 55 positions falling Within the ranges Set below: 2. An alloy as set forth in claim 1 wherein any increase of selenium content within 0.l%0.4% must be Nickel: accompanied by an increase of manganese content with- Selenium: in the range of 0.5%-2.0%. Manganese 0.5 %2.0% (10 3. An alloy as set forth in claim 2 containing less than a Minor elements (Simon, carbon, etc): 1% 1%; of minor elements such as s1l1con and carbon.
Iron: Balance References Cited A second plurality of alloys without selenium and UNITED STATES PATENTS with a manganese content of less than 0.5% but other- 2,471,079 5/1949 Post et wise of like composition to the first plurality were fabri- 3,138,454 6/1964 Williams cated in the same manner.
Both sets of alloys were tested for machinability in ac- RICHARD O. DEAN, Primary Examiner
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2804570A | 1970-04-13 | 1970-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3623864A true US3623864A (en) | 1971-11-30 |
Family
ID=21841254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US28045A Expired - Lifetime US3623864A (en) | 1970-04-13 | 1970-04-13 | Machinable alloy |
Country Status (1)
Country | Link |
---|---|
US (1) | US3623864A (en) |
-
1970
- 1970-04-13 US US28045A patent/US3623864A/en not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: CARPENTER TECHNOLOGY CORPORATION READING PENNSYLVA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMAX INC., A CORP OF NEW YORK;REEL/FRAME:004284/0609 Effective date: 19840427 |