SE521053C2 - Use of an alloy non-oxidizing metal powder - Google Patents
Use of an alloy non-oxidizing metal powderInfo
- Publication number
- SE521053C2 SE521053C2 SE9802682A SE9802682A SE521053C2 SE 521053 C2 SE521053 C2 SE 521053C2 SE 9802682 A SE9802682 A SE 9802682A SE 9802682 A SE9802682 A SE 9802682A SE 521053 C2 SE521053 C2 SE 521053C2
- Authority
- SE
- Sweden
- Prior art keywords
- powder
- weight
- use according
- metal powder
- carbide
- Prior art date
Links
- 239000000843 powder Substances 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 32
- 239000002184 metal Substances 0.000 title claims abstract description 32
- 230000001590 oxidative effect Effects 0.000 title claims description 13
- 239000000956 alloy Substances 0.000 title description 2
- 229910045601 alloy Inorganic materials 0.000 title description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 238000005275 alloying Methods 0.000 claims abstract description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 239000011651 chromium Substances 0.000 claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 239000002344 surface layer Substances 0.000 claims abstract description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- 239000011572 manganese Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 150000002739 metals Chemical class 0.000 claims abstract description 6
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims abstract description 4
- -1 acyclic hydrocarbons Chemical class 0.000 claims abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003350 kerosene Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims 2
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000007254 oxidation reaction Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract 1
- 239000012188 paraffin wax Substances 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 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 3
- 150000001247 metal acetylides Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
- Carbon And Carbon Compounds (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
521 053 2 pulverkorn innefattande oxidationskänsliga legeringsämnen, såsom krom, mangan, kisel. Dessutom slipper man använda kvävgasatmosfär, då atmosfären i atomiseringsanläggningen är mättad på förångat resp. karboniserat atomiseringsmedel. 521 053 powder grains comprising oxidation-sensitive alloying elements, such as chromium, manganese, silicon. In addition, you do not have to use a nitrogen atmosphere, as the atmosphere in the atomization plant is saturated with evaporated resp. carbonated atomizer.
Föreliggande uppfinning löser således problemen med addition av syre resp. oönskat kväve. Det atomiserade, legerade metallpulver som används enligt uppfinningen är icke-oxiderande likväl som det förhindrar oxidation. Det har för- bättrade pulvermetallurgiska egenskaper såsom hållfasthet och seghet. I pulver- kornens ytskikt är karbidbundet kol anrikat.The present invention thus solves the problems of addition of oxygen resp. unwanted nitrogen. The atomized alloyed metal powder used in the invention is non-oxidizing as well as preventing oxidation. It has improved powder metallurgical properties such as strength and toughness. Carbide-bonded carbon is enriched in the surface layer of the powder grains.
Detaljerad beskrivninq av uppfinningen Uppfinningen avser en användning enligt krav 1.Detailed Description of the Invention The invention relates to a use according to claim 1.
Det icke-oxiderande legerade metallpulvret som används enligt uppfin- ningen innefattar förutom järn och karbidbundet kol även oxidationskänsliga leger- ingsmetaller såsom krom, mangan och/eller kisel. Dessa legeringsmetaller kan också karbidbinda kol.The non-oxidizing alloyed metal powder used according to the invention comprises, in addition to iron and carbide-bonded carbon, also oxidation-sensitive alloying metals such as chromium, manganese and / or silicon. These alloy metals can also carbide bond carbon.
Atomiseringsmedel, som används vid framställningen av det icke- oxiderande legerade metallpulvret, består av kolväten valda ur gruppen fotogen, dieseloljor, eller andra cykliska resp. acykliska kolväten, som delvis karboniseras vid atomiserlngen. Vid karboniseringen av kolväten bildas vätgas förutom karbi- derna, vilka binds till metallerna i pulverkornen. Atmosfären i atomiseringskärlet är mättad på förångat resp. karboniserat atomiseringsmedel, som består av kolväten och vätgas. Atmosfären blir således reduktiv, vilket skyddar de bildade pulverkor- nen. l det legerade metallpulvret kan även andra legeringsämnen ingå, så- som vanadin, molybden, wolfram, aluminium, koppar, nickel, titan. l en föredragen utföringsform av uppfinningen används atomiserat legerat icke-oxiderande metallpulver baserat på järn med anrikat karbidbundet kol i ytskiktet, som karbidbundits till metallen i pulverkornen av karboniserat atomiseringsmedel, såsom kolväten valda ur gruppen fotogen, dieseloljor, eller andra cykliska eller acykliska kolväten vid atomiseringen, där de legerade pulverkornen innefattar förutom järn och karbidbundet kol ett eller flera av följande 521 055 legeringsämnen 0,1 till 16 vikt-% krom, företrädesvis 0,5 till 12 vikt-%, 0,1 till 12 vikt-% mangan, företrädesvis 0,5 till 10 vikt-%, eller 0,1 till 5,0 vikt-% kisel, företrädesvis 0,5 till 4,5 vikt-%, kolhalten är 0,02 till 3,0 vikt-% av totala halten i metallpulvret samt syrehalten är mindre än 200 ppm.Atomizing agents used in the preparation of the non-oxidizing alloyed metal powder consist of hydrocarbons selected from the group of kerosene, diesel oils, or other cyclic resp. acyclic hydrocarbons, which are partially carbonized during atomization. During the carbonization of hydrocarbons, hydrogen gas is formed in addition to the carbides, which bind to the metals in the powder grains. The atmosphere in the atomization vessel is saturated with evaporated resp. carbonated atomizer, consisting of hydrocarbons and hydrogen. The atmosphere thus becomes reductive, which protects the formed powder grains. The alloyed metal powder may also contain other alloying elements, such as vanadium, molybdenum, tungsten, aluminum, copper, nickel, titanium. In a preferred embodiment of the invention, atomized alloyed non-oxidizing metal powder based on iron with enriched carbide-bonded carbon is used in the surface layer, which carbide-bonded to the metal in the powder grains of carbonized atomizing agent, such as hydrocarbons selected from the group kerosene, diesel oils or other cyclic , wherein the alloyed powder grains comprise, in addition to iron and carbide-bonded carbon, one or more of the following 521,055 alloying elements 0.1 to 16% by weight of chromium, preferably 0.5 to 12% by weight, 0.1 to 12% by weight of manganese, preferably 0.5 to 10% by weight, or 0.1 to 5.0% by weight of silicon, preferably 0.5 to 4.5% by weight, the carbon content is 0.02 to 3.0% by weight of the total content in the metal powder and the oxygen content are less than 200 ppm.
Vid en annan föredragen utföringsform av uppfinningen är extra leger- ingsämnen tillsatta till ovan nämna legerade icke-oxiderande metallpulver. Sådana extra legeringsämnen kan vara såsom vanadin, molybden, wolfram, aluminium, koppar, nickel och/eller titan. Föredragna halter av de extra legeringsämnena lig- ger inom området 0,1 till 5,0 vikt-%.In another preferred embodiment of the invention, additional alloying elements are added to the above-mentioned alloyed non-oxidizing metal powders. Such additional alloying elements may be such as vanadium, molybdenum, tungsten, aluminum, copper, nickel and / or titanium. Preferred levels of the additional alloying elements are in the range 0.1 to 5.0% by weight.
Pulverkornens storleksfördelning är huvudsakligen 10 till 350 um, före- trädesvis 45 till 200 pm.The size distribution of the powder grains is mainly 10 to 350 μm, preferably 45 to 200 μm.
Genom att använda det atomiserade legerade icke-oxider-ande metall- pulvret, som är baserat på järn med anrikat karbidbundet kol i ytskiktet är det i en- lighet med uppfinningen möjligt att framställa pressade sintrade produkter, såsom kugghjul och kullager. Dessa produkter fordrar hög mekanisk hållfasthet och seg- het, vilka egenskaper uppnås genom att legeringstillsatserna höjer härdbarhet och hållfasthet. Produkterna framställs genom konventionell pulvermetallurgisk press- ning eller varmpressning följd av sintring och/eller sintersmide.By using the atomized alloyed non-oxidizing metal powder, which is based on iron with enriched carbide-bonded carbon in the surface layer, it is possible according to the invention to produce pressed sintered products, such as gears and ball bearings. These products require high mechanical strength and toughness, which properties are achieved by the alloy additives raising hardenability and strength. The products are produced by conventional powder metallurgical pressing or hot pressing followed by sintering and / or sintering.
Genom att det framställda metallpulvret är icke-oxiderande och förhind- rar oxidation kan det blandas med annat pulver, som är framställt av oxidations- känsliga metaller. Detta innebär att man kan framställa kompositmaterial med helt nya egenskaper.Because the metal powder produced is non-oxidizing and prevents oxidation, it can be mixed with other powders, which are made from oxidation-sensitive metals. This means that you can produce composite materials with completely new properties.
Föreliggande uppfinning avser således användningen av det atomise- rade legerade icke-oxiderande metallpulvret för framställning av pressade och sintrade produkter, såsom kugghjul och kullager genom konventionell pulvermetal- lurgisk pressning eller varmpressning följd av sintring och/eller sintersmide, enligt patentkraven 1-7.Thus, the present invention relates to the use of the atomized alloyed non-oxidizing metal powder for the production of pressed and sintered products, such as gears and ball bearings by conventional powder metallurgical pressing or hot pressing followed by sintering and / or sintering, according to claims 1-7.
Föreliggande uppfinning kommer att illustreras vtterli- gare med kon- kreta exempel, vilka emellertid ej får betraktas som begränsande av uppfinningens skyddsomfång på annat sätt än vad som definieras i de bilagda patentkraven. l följande exempel angivna legerade icke-oxiderande metallpulver framställdes enligt det förfarande som är beskrivet i den svenska patentansökan 9601482-4. Som atomiseringsmedel användes i försöken fotogen. 521 0554 Exempel 1 Legerat metallpulver framställdes av typen US32CrMn, men med skillnaden att det framställda pulvret har metallkarbid i ytskiktet. l detta pulver ingår 0,9 till 1,2 vikt-% krom, 1,5 vikt-% mangan samt 0,15 till 0,25 vikt-% molybden.The present invention will be further illustrated by concrete examples, which, however, may not be construed as limiting the scope of the invention in any way other than as defined in the appended claims. The alloyed non-oxidizing metal powders listed in the following examples were prepared according to the procedure described in Swedish patent application 9601482-4. Kerosene was used as atomizing agent in the experiments. 521 0554 Example 1 Alloyed metal powder was prepared of the type US32CrMn, but with the difference that the powder produced has metal carbide in the surface layer. This powder contains 0.9 to 1.2% by weight of chromium, 1.5% by weight of manganese and 0.15 to 0.25% by weight of molybdenum.
Exempel 2 Legerat metallpulver framställdes av typen "Case Harde- ning Steel" med metallkarbider i ytskiktet. I pulvret ingår 0,8 till 1,3 vikt-% krom och 1,1 vikt-% mangan.Example 2 Alloyed metal powder was made of the "Case Hardening Steel" type with metal carbides in the surface layer. The powder contains 0.8 to 1.3% by weight of chromium and 1.1% by weight of manganese.
Exempel 3 Ett legerat metallpulver med metallkarbider i ytskiktet framställdes med 8,0 till 10 vikt-% krom; 8,0 till 10 vikt-% mangan, 0,8 till 1,2 vikt-% kol och resten järn. Det framställda pulvret är runt och har en storieks fördelning mellan 45 och 200 pm.Example 3 An alloyed metal powder with metal carbides in the surface layer was prepared with 8.0 to 10% by weight of chromium; 8.0 to 10% by weight of manganese, 0.8 to 1.2% by weight of carbon and the remainder iron. The powder produced is round and has a size distribution between 45 and 200 μm.
Claims (1)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9802682A SE521053C2 (en) | 1998-08-06 | 1998-08-06 | Use of an alloy non-oxidizing metal powder |
| DE69939230T DE69939230D1 (en) | 1998-08-06 | 1999-07-19 | ALLOY, NONOXIDING METAL POWDER |
| AT99935265T ATE402773T1 (en) | 1998-08-06 | 1999-07-19 | ALLOY NON-OXIDIZING METAL POWDER |
| PCT/SE1999/001293 WO2000007759A1 (en) | 1998-08-06 | 1999-07-19 | Alloyed, non-oxidising metal powder |
| EP99935265A EP1742753B1 (en) | 1998-08-06 | 1999-07-19 | Alloyed, non-oxidising metal powder |
| EP08153706A EP2163331A1 (en) | 1998-08-06 | 1999-07-19 | Alloyed, non-oxidising metal powder |
| AU50778/99A AU5077899A (en) | 1998-08-06 | 1999-07-19 | Alloyed, non-oxidising metal powder |
| ES99935265T ES2310427T3 (en) | 1998-08-06 | 1999-07-19 | NON-OXIDATED METALLIC POWDER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9802682A SE521053C2 (en) | 1998-08-06 | 1998-08-06 | Use of an alloy non-oxidizing metal powder |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE9802682D0 SE9802682D0 (en) | 1998-08-06 |
| SE9802682L SE9802682L (en) | 2000-02-07 |
| SE521053C2 true SE521053C2 (en) | 2003-09-23 |
Family
ID=20412209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE9802682A SE521053C2 (en) | 1998-08-06 | 1998-08-06 | Use of an alloy non-oxidizing metal powder |
Country Status (7)
| Country | Link |
|---|---|
| EP (2) | EP2163331A1 (en) |
| AT (1) | ATE402773T1 (en) |
| AU (1) | AU5077899A (en) |
| DE (1) | DE69939230D1 (en) |
| ES (1) | ES2310427T3 (en) |
| SE (1) | SE521053C2 (en) |
| WO (1) | WO2000007759A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100852497B1 (en) * | 2007-03-12 | 2008-08-18 | 한양대학교 산학협력단 | Corrosion-Resistant Iron-Based Alloy and Manufacturing Method Thereof |
| CA2789780A1 (en) * | 2010-02-15 | 2011-08-18 | Federal-Mogul Corporation | A master alloy for producing sinter hardened steel parts and process for the production of sinter hardened parts |
| JP6229277B2 (en) | 2013-03-01 | 2017-11-15 | 日立化成株式会社 | Sintered alloy and method for producing the same |
| US11685982B2 (en) * | 2016-10-17 | 2023-06-27 | Tenneco Inc. | Free graphite containing powders |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2220673C3 (en) * | 1972-04-27 | 1979-10-04 | Bayerisches Leichtmetallwerk Graf Bluecher Von Wahlstatt Kg, 8000 Muenchen | Metallic sintered alloys, in particular sintered steel alloys |
| JPS61276949A (en) * | 1985-05-29 | 1986-12-06 | Sumitomo Metal Ind Ltd | Manufacturing method of sintered parts |
| JP3771254B2 (en) * | 1991-08-07 | 2006-04-26 | エラスティール クロスター アクチボラグ | High speed steel manufactured by powder metallurgy |
| US5522914A (en) * | 1993-09-27 | 1996-06-04 | Crucible Materials Corporation | Sulfur-containing powder-metallurgy tool steel article |
| SE9402672D0 (en) * | 1994-08-10 | 1994-08-10 | Hoeganaes Ab | Chromium containing materials having high tensile strength |
| SE509049C2 (en) * | 1996-04-18 | 1998-11-30 | Rutger Larsson Konsult Ab | Process and plant for the production of atomized metal powder, metal powder and use of the metal powder |
| US9302818B2 (en) * | 2011-11-22 | 2016-04-05 | Robert Beadles | Reusable envelope |
-
1998
- 1998-08-06 SE SE9802682A patent/SE521053C2/en not_active IP Right Cessation
-
1999
- 1999-07-19 AT AT99935265T patent/ATE402773T1/en not_active IP Right Cessation
- 1999-07-19 WO PCT/SE1999/001293 patent/WO2000007759A1/en not_active Ceased
- 1999-07-19 EP EP08153706A patent/EP2163331A1/en not_active Withdrawn
- 1999-07-19 EP EP99935265A patent/EP1742753B1/en not_active Expired - Lifetime
- 1999-07-19 DE DE69939230T patent/DE69939230D1/en not_active Expired - Lifetime
- 1999-07-19 ES ES99935265T patent/ES2310427T3/en not_active Expired - Lifetime
- 1999-07-19 AU AU50778/99A patent/AU5077899A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| EP1742753A1 (en) | 2007-01-17 |
| AU5077899A (en) | 2000-02-28 |
| WO2000007759A1 (en) | 2000-02-17 |
| DE69939230D1 (en) | 2008-09-11 |
| EP1742753B1 (en) | 2008-07-30 |
| SE9802682L (en) | 2000-02-07 |
| SE9802682D0 (en) | 1998-08-06 |
| EP2163331A1 (en) | 2010-03-17 |
| ES2310427T3 (en) | 2009-01-01 |
| ATE402773T1 (en) | 2008-08-15 |
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