EP0733719B1 - Alliage à base de fer pour applications aux températures élevées - Google Patents
Alliage à base de fer pour applications aux températures élevées Download PDFInfo
- Publication number
- EP0733719B1 EP0733719B1 EP96890050A EP96890050A EP0733719B1 EP 0733719 B1 EP0733719 B1 EP 0733719B1 EP 96890050 A EP96890050 A EP 96890050A EP 96890050 A EP96890050 A EP 96890050A EP 0733719 B1 EP0733719 B1 EP 0733719B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- iron
- weight
- max
- alloy
- aluminium
- 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 claims abstract description 42
- 239000000956 alloy Substances 0.000 title claims abstract description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 42
- 229910052742 iron Inorganic materials 0.000 title claims description 18
- 239000000463 material Substances 0.000 claims description 35
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 239000011651 chromium Substances 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 229910052750 molybdenum Inorganic materials 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 9
- 239000011733 molybdenum Substances 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 239000010955 niobium Substances 0.000 claims description 9
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052721 tungsten Inorganic materials 0.000 claims description 9
- 239000010937 tungsten Substances 0.000 claims description 9
- 229910052720 vanadium Inorganic materials 0.000 claims description 9
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 9
- 229910052758 niobium Inorganic materials 0.000 claims description 8
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 239000011572 manganese Substances 0.000 claims description 6
- 150000002739 metals Chemical class 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- 230000008602 contraction Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 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 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 239000011574 phosphorus Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 4
- 239000005864 Sulphur Substances 0.000 claims 2
- 238000007493 shaping process Methods 0.000 claims 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 235000019589 hardness Nutrition 0.000 description 20
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000005496 tempering Methods 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 4
- 150000001247 metal acetylides Chemical class 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000005121 nitriding Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
Definitions
- the invention relates to an iron-based alloy for use with increased Temperature, especially hot working steel for tools for non-cutting Hot forming of metals and alloys, for example iron, copper or Aluminum alloys containing at least the elements carbon, silicon, Manganese, chromium, molybdenum and / or tungsten, vanadium, aluminum, if appropriate Sulfur as well as manufacturing-related steel components and impurities.
- metals and alloys for example iron, copper or Aluminum alloys containing at least the elements carbon, silicon, Manganese, chromium, molybdenum and / or tungsten, vanadium, aluminum, if appropriate Sulfur as well as manufacturing-related steel components and impurities.
- the invention relates to a tool, in particular for non-cutting Hot forming of metals and alloys.
- Hot working steels are characterized by the fact that they are made from them Tools with the appropriate thermal tempering also for Working temperatures from 400 ° C to 500 ° C an essentially equally high hardness as at room temperature.
- the high warm hardness or that when starting of the hardened material is formed by the secondary hardness Alloy elements chromium, molybdenum as well as tungsten and in particular vanadium and possibly also reached niobium.
- Warning steel such as an iron-based alloy according to DIN Material no. 1.2343 or according to AISI Type H 11 are regarding the Composition, manufacture and the required thermal Remuneration parameters for highest achievable hardness, strength and Toughness values at operating temperatures up to approx. 500 ° C are known to the person skilled in the art.
- the invention is based on the object of an iron-based alloy Use at elevated temperature, especially a hot-work steel for Tools for non-cutting hot forming of metals and alloys, indicate which or which higher in comparison with known alloys Permits working temperatures and has improved material properties.
- Temperature of over 500 ° C increases the working hardness, the fire crack resistance improved and the material toughness increased.
- a tool, in particular for a chipless hot forming of Metals and alloys which can be used at operating temperatures of over 500 ° C favorable mechanical parameters, improved performance properties and has an increased lifespan.
- Nickel and nitrogen are of particular importance.
- Nickel over 0.35% by weight probably deteriorates the temperability of the material a stabilization of the remaining austenite.
- a nitrogen concentration greater than 0.015% by weight causes the formation of aluminum nitride, which has grain boundaries accumulated a disproportionate decrease in the toughness values of the material can cause.
- the material has the following elements in% by weight: carbon 0.30 to 0.50 Silicon (Si) 0.75 to 1.60 manganese 0.30 to 0.80 chrome 3.20 to 6.50 Molybdenum (Mo) 0 to 1.65 Tungsten (W) 0 to 3.00 (Mon + W / 2) 0.95 to 1.65 Vanadium 0.25 to 1.20 Aluminum (Al) 0.75 to 1.60 (Al + Si) 1.60 to 2.60 niobium 0 to 0.15 titanium 0 to 0.15 nickel max 0.35 nitrogen max 0.015 Remainder iron and accompanying elements.
- the iron-based alloy for use at elevated temperature particularly preferably has contents of essentially the following elements in% by weight: carbon 0.35 to 0.40 Silicon (Si) 0.90 to 1.20 manganese 0.35 to 0.55 chrome 4.50 to 5.50 Molybdenum (Mo) 0.75 to 1.50 Tungsten (W) 0 to 1.50 (Mon + W / 2) 1.20 to 1.50 Vanadium 0.30 to 0.60 Aluminum (Al) 0.80 to 1.25 (Al + Si) 1.85 to 2.40 niobium 0.03 to 0.1 titanium 0 to 0.09 nickel max 0.18 nitrogen max 0.009 oxygen max. 0.006 as an accompanying element
- a Niobium content in the range of 0.03 to 0.1% by weight not only results in fine grain of the material with its beneficial effects but also supports the Formation of the secondary hardness hump when tempering the hardened material and its shift to higher temperatures. Titanium concentrations up to 0.09 % By weight promotes fine-grainedness, higher contents reduce one Hardness assumption of the alloy. Oxygen contents higher than preferably 0.006% by weight act adversely affect the mechanical high temperature properties and deteriorate in particular a polishability of the material.
- Iron based alloy for use at elevated temperature Sulfur in the range of in wt .-% 0.05 to 0.16 advantageous for an improved mechanical processing of the same.
- the total concentration of the important ferrite-forming elements in the material has a decisive influence on the formation of the structure of the tempering structure and thus on the performance properties of the part. If, as in a preferred embodiment of the invention, the total content of Cr, Mo, Si and Al of the alloy has values between 7.6 and 8.8% by weight, an extremely safe, largely process-insensitive conversion behavior with a particularly fine microstructure achieved when hardening and tempering the material.
- the further aim of the invention is achieved in a tool of the type mentioned at the outset if it has a chemical composition of the material according to one of Claims 1 to 4 and a material hardness of at least 53, preferably at least 54, HRC, a tensile strength of at least 1195, preferably of at least 1200, N / mm 2 , a 0.2% Yield strength of at least 1060, preferably of 1070, N / mm 2 , has an elongation and contraction of at least 18.5 or 60%, preferably of at least 20 or 66%, at a temperature of 500 ° C to 550 ° C .
- the alloy according to the invention is thermally tempered to at least values marked above will be an optimal property level of the Hot work tool reached. This affects not only the mechanical values at high working temperature but also less warm wear, increased creep rupture strength, reduced fire crack sensitivity and less For example, the forging blank tends to stick to the die. Although exact scientific data is still missing, the hot-work steel is likely to be provided high aluminum content in high temperature operation an oxide layer form on the work surfaces, which in association with other alloy elements has high adhesion and abrasion resistance and the tendency to stick to Workpiece reduced.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Soft Magnetic Materials (AREA)
- Ceramic Products (AREA)
Claims (9)
- Alliage à base de fer, pour utilisation à haute température, en particulier acier pour usinage à chaud pour outils destinés au formage à chaud sans enlèvement de copeaux de métaux et d'alliages, par exemple d'alliages de fer, cuivre ou aluminium, contenant au moins les éléments carbone, silicium, manganèse, chrome, molybdène et/ou tungstène, vanadium, aluminium, éventuellement soufre, ainsi que des impuretés et des éléments associés à l'acier, dus à la fabrication, caractérisé par les teneurs en les éléments suivants, en % en poids:
carbone 0,30 à 0,50 silicium (Si) 0,40 à 1,60 manganèse 0,30 à 0,80 soufre 0 à 0,16 chrome (Cr) 3,20 à 6,50 molybdène (Mo) 0 à 2,00 tungstène (W) 0 à 3,00 (Mo + W/2) 0,95 à 2,00 vanadium 0,25 à 1,20 aluminium (Al) 0,75 à 1,60 (Al + Si) 1,20 à 2,60 niobium 0 à 0,20 titane 0 à 0,15 nickel max. 0,35 azote max. 0,015
le reste étant constitué de fer et d'éléments associés. - Alliage à base de fer selon la revendication 1, caractérisé par les teneurs en les éléments suivants, en % en poids:
carbone 0,30 à 0,50 silicium (Si) 0,75 à 1,60 manganèse 0,30 à 0,80 chrome 3,20 à 6,50 molybdène (Mo) 0 à 1,65 tungstène (W) 0 à 3,00 (Mo + W/2) 0,95 à 1,65 vanadium 0,25 à 1,20 aluminium (Al) 0,75 à 1,60 (Al + Si) 1,60 à 2,60 niobium 0 à 0,15 titane 0 à 0,15 nickel max. 0,35 azote max. 0,015 - Alliage à base de fer selon la revendication 1 ou 2, caractérisé par les teneurs en les éléments suivants, en % en poids:
carbone 0,35 à 0,40 silicium (Si) 0,90 à 1,20 manganèse 0,35 à 0,55 chrome 4,50 à 5,50 molybdène (Mo) 0,75 à 1,50 tungstène (W) 0 à 1,50 (Mo + W/2) 1,20 à 1,50 vanadium 0,30 à 0,60 aluminium (Al) 0,80 à 1,25 (Al + Si) 1,85 à 2,40 niobium 0,03 à 0,1 titane 0 à 0,09 nickel max. 0,18 azote max. 0,009 oxygène max. 0,006 en tant qu'élément asocié. - Alliage selon l'une des revendications 1 à 3, caractérisé par une teneur en soufre, en % en poids, allant de 0,05 à 0,16.
- Alliage selon l'une des revendications 1 à 4, caractérisé par une teneur en phosphore, en tant qu'élément associé, de 0,01 % en poids au maximum.
- Alliage selon l'une des revendications 1 à 5, caractérisé par une teneur en la somme de Cr+Mo+Si+Al, en % en poids, allant de 7,6 à 8,8.
- Outil, en particulier pour un formage à chaud sans enlèvement de copeaux de métaux et d'alliages, par exemple d'alliages de fer, cuivre ou aluminium, caractérisé par une composition chimique de l'outil selon l'une des revendications 1 à 6 et une dureté de matériau, ajustée par un traitement thermique, d'au moins 53, de préférence d'au moins 54 DRC (dureté Rockwell C), une résistance à la traction d'au moins 1 195, de préférence d'au moins 1 200 N/mm2, une limite d'élasticité à 0,2 % d'au moins 1 060, de préférence de 1 070 N/mm2, un allongement et une striction d'au moins 18,5 et 60 %, respectivement, de préférence d'au moins 20 et 66 %, respectivement, à une température de 500 à 550°C.
- Outil selon la revendication 7, caractérisé par des surfaces d'usinage à dureté au moins partiellement encore accrue.
- Outil selon la revendication 7 ou 8, caractérisé par des surfaces d'usinage qui au moins en partie présentent une couche de nitruration à haute dureté.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT516/95 | 1995-03-23 | ||
| AT0051695A AT403058B (de) | 1995-03-23 | 1995-03-23 | Eisenbasislegierung zur verwendung bei erhöhter temperatur und werkzeug aus dieser legierung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0733719A1 EP0733719A1 (fr) | 1996-09-25 |
| EP0733719B1 true EP0733719B1 (fr) | 1999-03-03 |
Family
ID=3492683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96890050A Expired - Lifetime EP0733719B1 (fr) | 1995-03-23 | 1996-03-19 | Alliage à base de fer pour applications aux températures élevées |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0733719B1 (fr) |
| AT (2) | AT403058B (fr) |
| DE (1) | DE59601353D1 (fr) |
| ES (1) | ES2128828T3 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007014407A1 (de) * | 2007-03-26 | 2008-10-02 | Ejot Baubefestigungen Gmbh | Schraube mit selbstfurchendem Gewinde mit einem Schaft aus korrosionsbeständigem Stahl und einer daran gefügten harten Spitze |
| DE102007014408A1 (de) * | 2007-03-26 | 2008-10-02 | Ejot Baubefestigungen Gmbh | Schraube mit selbstfurchendem Gewinde |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT410447B (de) | 2001-10-03 | 2003-04-25 | Boehler Edelstahl | Warmarbeitsstahlgegenstand |
| EP1887096A1 (fr) | 2006-08-09 | 2008-02-13 | Rovalma, S.A. | Acier pour travail à chaud |
| AT506790B1 (de) * | 2008-11-20 | 2009-12-15 | Boehler Edelstahl Gmbh & Co Kg | Warmarbeitsstahl-legierung |
| EP2682491B1 (fr) | 2011-03-03 | 2018-07-04 | Hitachi Metals, Ltd. | Acier pour outil de travail à chaud doté d'une excellente ténacité et son procédé de production |
| CN105579604A (zh) | 2013-09-27 | 2016-05-11 | 日立金属株式会社 | 高速工具钢及其制造方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5370940A (en) * | 1976-12-06 | 1978-06-23 | Hitachi Metals Ltd | Nitriding steel for hot tool and structure |
| JPS55145155A (en) * | 1979-04-25 | 1980-11-12 | Daido Steel Co Ltd | Suction valve |
| JPS58113352A (ja) * | 1981-12-28 | 1983-07-06 | Daido Steel Co Ltd | 熱間加工用合金鋼 |
| JPH0765141B2 (ja) * | 1985-09-18 | 1995-07-12 | 日立金属株式会社 | 熱間加工用工具鋼 |
| JPS63140066A (ja) * | 1986-12-02 | 1988-06-11 | Hitachi Metals Ltd | ピストンリング材 |
| AT393387B (de) * | 1989-10-23 | 1991-10-10 | Boehler Gmbh | Kaltarbeitsstahl mit hoher druckfestigkeit und verwendung dieses stahles |
-
1995
- 1995-03-23 AT AT0051695A patent/AT403058B/de not_active IP Right Cessation
-
1996
- 1996-03-19 DE DE59601353T patent/DE59601353D1/de not_active Expired - Lifetime
- 1996-03-19 EP EP96890050A patent/EP0733719B1/fr not_active Expired - Lifetime
- 1996-03-19 AT AT96890050T patent/ATE177159T1/de active
- 1996-03-19 ES ES96890050T patent/ES2128828T3/es not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007014407A1 (de) * | 2007-03-26 | 2008-10-02 | Ejot Baubefestigungen Gmbh | Schraube mit selbstfurchendem Gewinde mit einem Schaft aus korrosionsbeständigem Stahl und einer daran gefügten harten Spitze |
| DE102007014408A1 (de) * | 2007-03-26 | 2008-10-02 | Ejot Baubefestigungen Gmbh | Schraube mit selbstfurchendem Gewinde |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59601353D1 (de) | 1999-04-08 |
| EP0733719A1 (fr) | 1996-09-25 |
| ATA51695A (de) | 1997-03-15 |
| ATE177159T1 (de) | 1999-03-15 |
| ES2128828T3 (es) | 1999-05-16 |
| AT403058B (de) | 1997-11-25 |
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