DE2365046C2 - Pulvermetallurgische Verarbeitung von Hochtemperaturwerkstoffen - Google Patents
Pulvermetallurgische Verarbeitung von HochtemperaturwerkstoffenInfo
- Publication number
- DE2365046C2 DE2365046C2 DE2365046A DE2365046A DE2365046C2 DE 2365046 C2 DE2365046 C2 DE 2365046C2 DE 2365046 A DE2365046 A DE 2365046A DE 2365046 A DE2365046 A DE 2365046A DE 2365046 C2 DE2365046 C2 DE 2365046C2
- Authority
- DE
- Germany
- Prior art keywords
- powder
- particle size
- sintered
- alloy
- density
- 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
Links
- 239000000843 powder Substances 0.000 title claims description 74
- 239000000463 material Substances 0.000 title description 19
- 238000012545 processing Methods 0.000 title description 5
- 239000002245 particle Substances 0.000 claims description 65
- 229910045601 alloy Inorganic materials 0.000 claims description 35
- 239000000956 alloy Substances 0.000 claims description 35
- 239000011230 binding agent Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 21
- 239000002904 solvent Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 3
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 claims description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 229910000684 Cobalt-chrome Inorganic materials 0.000 claims description 2
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000000788 chromium alloy Substances 0.000 claims description 2
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010952 cobalt-chrome Substances 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 238000005245 sintering Methods 0.000 description 19
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 239000000203 mixture Substances 0.000 description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 238000000227 grinding Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 238000007792 addition Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- -1 fatty acid ester Chemical class 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 238000003801 milling Methods 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 238000004663 powder metallurgy Methods 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- OCJBOOLMMGQPQU-UHFFFAOYSA-N 1,4-dichlorobenzene Chemical compound ClC1=CC=C(Cl)C=C1 OCJBOOLMMGQPQU-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 241000723346 Cinnamomum camphora Species 0.000 description 1
- 229910020630 Co Ni Inorganic materials 0.000 description 1
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical class [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 description 1
- 229940106681 chloroacetic acid Drugs 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical class [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 229910000753 refractory alloy Inorganic materials 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 239000003232 water-soluble binding agent 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
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/148—Agglomerating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00323502A US3846126A (en) | 1973-01-15 | 1973-01-15 | Powder metallurgy production of high performance alloys |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2365046A1 DE2365046A1 (de) | 1974-07-18 |
| DE2365046C2 true DE2365046C2 (de) | 1984-06-07 |
Family
ID=23259471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2365046A Expired DE2365046C2 (de) | 1973-01-15 | 1973-12-28 | Pulvermetallurgische Verarbeitung von Hochtemperaturwerkstoffen |
Country Status (22)
Families Citing this family (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4129444A (en) * | 1973-01-15 | 1978-12-12 | Cabot Corporation | Power metallurgy compacts and products of high performance alloys |
| US3988524A (en) * | 1973-01-15 | 1976-10-26 | Cabot Corporation | Powder metallurgy compacts and products of high performance alloys |
| US4062678A (en) * | 1974-01-17 | 1977-12-13 | Cabot Corporation | Powder metallurgy compacts and products of high performance alloys |
| US4121927A (en) * | 1974-03-25 | 1978-10-24 | Amsted Industries Incorporated | Method of producing high carbon hard alloys |
| JPS5292807A (en) * | 1976-02-02 | 1977-08-04 | Komatsu Mfg Co Ltd | Process for carbonization and sintering |
| US4070184A (en) * | 1976-09-24 | 1978-01-24 | Gte Sylvania Incorporated | Process for producing refractory carbide grade powder |
| US4225345A (en) * | 1978-08-08 | 1980-09-30 | Adee James M | Process for forming metal parts with less than 1 percent carbon content |
| US4249944A (en) * | 1979-04-09 | 1981-02-10 | Fansteel Inc. | Method of making electrical contact material |
| DE3004209C2 (de) * | 1980-02-06 | 1983-02-03 | Sintermetallwerk Krebsöge GmbH, 5608 Radevormwald | Verfahren zum Verdichten von Pulvern und Metallen und deren Legierungen zu Vorpreßkörpern |
| US4343650A (en) * | 1980-04-25 | 1982-08-10 | Cabot Corporation | Metal binder in compaction of metal powders |
| US4663241A (en) * | 1980-09-08 | 1987-05-05 | United Technologies Corporation | Powder metal disk with selective fatigue strengthening |
| US4602953A (en) * | 1985-03-13 | 1986-07-29 | Fine Particle Technology Corp. | Particulate material feedstock, use of said feedstock and product |
| US4722826A (en) * | 1986-09-15 | 1988-02-02 | Inco Alloys International, Inc. | Production of water atomized powder metallurgy products |
| US4834800A (en) * | 1986-10-15 | 1989-05-30 | Hoeganaes Corporation | Iron-based powder mixtures |
| US5069714A (en) * | 1990-01-17 | 1991-12-03 | Quebec Metal Powders Limited | Segregation-free metallurgical powder blends using polyvinyl pyrrolidone binder |
| US5298055A (en) * | 1992-03-09 | 1994-03-29 | Hoeganaes Corporation | Iron-based powder mixtures containing binder-lubricant |
| DE69516343T2 (de) | 1994-08-24 | 2000-10-19 | Quebec Metal Powders, Ltd. | Verfahren und Werkzeug der Pulvermetallurgie mit elektrostatischer Schmierung der Wände der Pressform |
| US5498276A (en) * | 1994-09-14 | 1996-03-12 | Hoeganaes Corporation | Iron-based powder compositions containing green strengh enhancing lubricants |
| US6039784A (en) * | 1997-03-12 | 2000-03-21 | Hoeganaes Corporation | Iron-based powder compositions containing green strength enhancing lubricants |
| SE0300881D0 (sv) * | 2003-03-27 | 2003-03-27 | Hoeganaes Ab | Powder metal composition and method for producing components thereof |
| US20060198751A1 (en) * | 2003-03-27 | 2006-09-07 | Hoganas Ab, | Co-based water-atomised powder composition for die compaction |
| US7300488B2 (en) * | 2003-03-27 | 2007-11-27 | Höganäs Ab | Powder metal composition and method for producing components thereof |
| EP1660259A1 (en) * | 2003-09-03 | 2006-05-31 | Apex Advanced Technologies, LLC | Composition for powder metallurgy |
| US9162285B2 (en) | 2008-04-08 | 2015-10-20 | Federal-Mogul Corporation | Powder metal compositions for wear and temperature resistance applications and method of producing same |
| US9624568B2 (en) | 2008-04-08 | 2017-04-18 | Federal-Mogul Corporation | Thermal spray applications using iron based alloy powder |
| US9546412B2 (en) * | 2008-04-08 | 2017-01-17 | Federal-Mogul Corporation | Powdered metal alloy composition for wear and temperature resistance applications and method of producing same |
| WO2010046224A2 (de) * | 2008-10-20 | 2010-04-29 | H.C. Starck Gmbh | Metallpulver |
| JP5486092B2 (ja) * | 2010-11-09 | 2014-05-07 | 福田金属箔粉工業株式会社 | 高靭性コバルト基合金とそれを盛金したエンジンバルブ |
| US9475945B2 (en) | 2013-10-03 | 2016-10-25 | Kennametal Inc. | Aqueous slurry for making a powder of hard material |
| IN2013CH04500A (enrdf_load_stackoverflow) | 2013-10-04 | 2015-04-10 | Kennametal India Ltd | |
| JP6358246B2 (ja) | 2015-01-08 | 2018-07-18 | セイコーエプソン株式会社 | 粉末冶金用金属粉末、コンパウンド、造粒粉末、焼結体および装飾品 |
| JP6372512B2 (ja) * | 2016-04-06 | 2018-08-15 | セイコーエプソン株式会社 | 粉末冶金用金属粉末、コンパウンド、造粒粉末、焼結体および耐熱部品 |
| WO2021067036A1 (en) | 2019-09-30 | 2021-04-08 | The Penn State Research Foundation | Cold sintering process for densification and sintering of powdered metals |
| JP2022035265A (ja) * | 2020-08-20 | 2022-03-04 | 日本ピストンリング株式会社 | バルブシート及びバルブシートの製造方法 |
| CN114682778B (zh) * | 2022-02-23 | 2023-06-02 | 北京科技大学 | 基于微细球形钛基粉末制备钛基制件的方法、钛基制件 |
| CN115487604A (zh) * | 2022-09-23 | 2022-12-20 | 东莞市名创传动科技有限公司 | 一种复合烧结过滤材料 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2018343A (en) * | 1931-10-27 | 1935-10-22 | Rca Corp | Electrical conductor and method of making the same |
| US2857270A (en) * | 1950-12-27 | 1958-10-21 | Hoganas Billesholms Ab | Method for the production of metal powder for powder metallurgical purposes |
| GB1172855A (en) * | 1966-04-14 | 1969-12-03 | Atomic Energy Authority Uk | Improvements in or relating to Processes for Producing Fibre-reinforced Sintered Metals |
| US3615381A (en) * | 1968-11-13 | 1971-10-26 | Atomic Energy Commission | Process for producing dispersion-hardened superalloys by internal oxidation |
| US3671230A (en) * | 1969-02-19 | 1972-06-20 | Federal Mogul Corp | Method of making superalloys |
| US3716347A (en) * | 1970-09-21 | 1973-02-13 | Minnesota Mining & Mfg | Metal parts joined with sintered powdered metal |
-
1973
- 1973-01-15 US US00323502A patent/US3846126A/en not_active Expired - Lifetime
- 1973-12-09 ZA ZA739585A patent/ZA739585B/xx unknown
- 1973-12-28 DE DE2365046A patent/DE2365046C2/de not_active Expired
-
1974
- 1974-01-02 IN IN09/CAL/74A patent/IN140276B/en unknown
- 1974-01-08 AR AR251846A patent/AR199602A1/es active
- 1974-01-11 BR BR74159A patent/BR7400159D0/pt unknown
- 1974-01-12 PL PL1974168106A patent/PL88512B1/pl unknown
- 1974-01-14 HU HUCA360A patent/HU168185B/hu unknown
- 1974-01-14 ES ES422274A patent/ES422274A1/es not_active Expired
- 1974-01-14 BE BE139794A patent/BE809726A/xx not_active IP Right Cessation
- 1974-01-14 IT IT67094/74A patent/IT1009104B/it active
- 1974-01-14 LU LU69150A patent/LU69150A1/xx unknown
- 1974-01-14 AT AT74274A patent/ATA27474A/de not_active IP Right Cessation
- 1974-01-14 CA CA190,070A patent/CA1031603A/en not_active Expired
- 1974-01-14 CH CH45874A patent/CH587091A5/xx not_active IP Right Cessation
- 1974-01-14 NL NL7400498A patent/NL7400498A/xx not_active Application Discontinuation
- 1974-01-14 JP JP49007494A patent/JPS5756523B2/ja not_active Expired
- 1974-01-14 FR FR7401195A patent/FR2213826B1/fr not_active Expired
- 1974-01-14 SE SE7400430A patent/SE401110B/xx not_active IP Right Cessation
- 1974-01-15 CS CS74250A patent/CS216185B2/cs unknown
- 1974-01-15 GB GB180174A patent/GB1457661A/en not_active Expired
- 1974-01-15 DD DD176014A patent/DD112725A5/xx unknown
-
1981
- 1981-04-02 JP JP56050035A patent/JPS5933654B2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2365046A1 (de) | 1974-07-18 |
| GB1457661A (en) | 1976-12-08 |
| JPS5729501A (en) | 1982-02-17 |
| BR7400159D0 (pt) | 1974-08-22 |
| PL88512B1 (en) | 1976-09-30 |
| AU6446274A (en) | 1975-07-17 |
| BE809726A (fr) | 1974-05-02 |
| HU168185B (enrdf_load_stackoverflow) | 1976-03-28 |
| IN140276B (enrdf_load_stackoverflow) | 1976-10-09 |
| NL7400498A (enrdf_load_stackoverflow) | 1974-07-17 |
| ZA739585B (en) | 1974-11-27 |
| FR2213826B1 (enrdf_load_stackoverflow) | 1981-02-27 |
| LU69150A1 (enrdf_load_stackoverflow) | 1974-04-08 |
| SE401110B (sv) | 1978-04-24 |
| US3846126A (en) | 1974-11-05 |
| CH587091A5 (enrdf_load_stackoverflow) | 1977-04-29 |
| FR2213826A1 (enrdf_load_stackoverflow) | 1974-08-09 |
| JPS5933654B2 (ja) | 1984-08-17 |
| ATA27474A (de) | 1978-01-15 |
| CA1031603A (en) | 1978-05-23 |
| IT1009104B (it) | 1976-12-10 |
| JPS5756523B2 (enrdf_load_stackoverflow) | 1982-11-30 |
| DD112725A5 (enrdf_load_stackoverflow) | 1975-05-05 |
| CS216185B2 (en) | 1982-10-29 |
| AR199602A1 (es) | 1974-09-13 |
| JPS5046507A (enrdf_load_stackoverflow) | 1975-04-25 |
| ES422274A1 (es) | 1976-07-01 |
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