EP0035681A1 - Utilisation d'un acier à résistance mécanique et ténacité élevées - Google Patents
Utilisation d'un acier à résistance mécanique et ténacité élevées Download PDFInfo
- Publication number
- EP0035681A1 EP0035681A1 EP81101268A EP81101268A EP0035681A1 EP 0035681 A1 EP0035681 A1 EP 0035681A1 EP 81101268 A EP81101268 A EP 81101268A EP 81101268 A EP81101268 A EP 81101268A EP 0035681 A1 EP0035681 A1 EP 0035681A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- cooling
- forging
- components
- values
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 25
- 239000010959 steel Substances 0.000 title claims abstract description 25
- 238000000137 annealing Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 238000005242 forging Methods 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910001562 pearlite Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract 3
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims 2
- 230000008018 melting Effects 0.000 claims 2
- 239000000203 mixture Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 claims 1
- 229910052720 vanadium Inorganic materials 0.000 abstract description 10
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052748 manganese Inorganic materials 0.000 abstract description 9
- 239000011572 manganese Substances 0.000 abstract description 9
- 229910052710 silicon Inorganic materials 0.000 abstract description 9
- 239000010703 silicon Substances 0.000 abstract description 9
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000011651 chromium Substances 0.000 abstract 1
- 238000009863 impact test Methods 0.000 abstract 1
- 238000010309 melting process Methods 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- ZLANVVMKMCTKMT-UHFFFAOYSA-N methanidylidynevanadium(1+) Chemical class [V+]#[C-] ZLANVVMKMCTKMT-UHFFFAOYSA-N 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000004881 precipitation hardening Methods 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
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Definitions
- the invention relates to the use of a steel as a material for components which, after cooling in still or moving air, if necessary after controlled cooling from forging temperatures or annealing temperatures above 1150 0 C having a structure of ferrite and pearlite and thereby stretching inclin- 0, 2 -Limit values of at least 490 N / mm and a notched bar impact work (measured on the DVM sample) of at least 30 J.
- the characteristic of this steel is that after forging it at temperatures between 1000 and 1250 ° C, preferably in a die between 1180 and 1250 ° C, with subsequent storage in still or moving air, a minimum 0, 2 limit of 450 N / mm 2 - achieved without subsequent heat treatment. This value is caused by the precipitation hardening of vanadium carbides or carbonitrides.
- the impact strength of this material is low, so that its use is limited to certain components, such as the crankshaft and the connecting rod, for which mechanical properties other than toughness are paramount.
- Typical characteristic values, which at 49 MnVS 3 after annealing at approx. 1225 ° C and after forging in the die to achieve crankshafts are listed in Example 1. After annealing at 1225 0 C, somewhat higher strength values are achieved with lower impact energy values than after forging in the die.
- the strength values of the boundary can be varied by adjusting the analysis of carbon and manganese contents in the upper or lower region, while the impact energy values-especially after the annealing or forging at temperatures around 1200 0 C thereby are not significantly changed.
- the object of this invention is therefore to provide a steel with improved toughness with similar strength values, this being achieved by simple air cooling of annealing or hot-forming temperatures without further heat treatment.
- the steel is particularly suitable for objects with larger cross sections, the smallest cross section of which is at least 100 cm 2.
- FIG. 4 Another example is the structure shown in Figure 4 of a steel containing silicon, manganese and vanadium, but with one Silicon content of 0.3%, which is below the range claimed in this patent.
- grain sizes of 2 to 3 are also estimated according to ASTM and impact energy values between 10 and 14 J at a 0, 2 limit of approx. 500 N / mm 2 have been determined.
- Ver facilitated steels g whose structure in the images 1 are displayed 3 and 4, lift clearly that low impact energy values (10-15 J) at 0, 2-limits 500-570 N / mm 2 can be achieved.
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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT81101268T ATE3652T1 (de) | 1980-03-12 | 1981-02-21 | Verwendung eines stahls hoher festigkeit und zaehigkeit. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3009443A DE3009443C2 (de) | 1980-03-12 | 1980-03-12 | Verwendung eines Stahls hoher Festigkeit und Zähigkeit |
| DE3009443 | 1980-03-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0035681A1 true EP0035681A1 (fr) | 1981-09-16 |
| EP0035681B1 EP0035681B1 (fr) | 1983-06-01 |
Family
ID=6096966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP81101268A Expired EP0035681B1 (fr) | 1980-03-12 | 1981-02-21 | Utilisation d'un acier à résistance mécanique et ténacité élevées |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0035681B1 (fr) |
| AT (1) | ATE3652T1 (fr) |
| DE (1) | DE3009443C2 (fr) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0572246A1 (fr) * | 1992-05-29 | 1993-12-01 | Imatra Steel Oy Ab | Pièce forgée et procédé pour sa fabrication |
| WO2008028447A1 (fr) | 2006-09-01 | 2008-03-13 | Georgsmarienhütte Gmbh | Acier et procédé de transformation pour produire des pièces mécaniques pouvant être séparées par rupture présentant une résistance accrue |
| EP2764127B1 (fr) | 2011-10-07 | 2015-08-12 | Babasaheb Neelkanth Kalyani | Procédé permettant d'améliorer la résistance à la fatigue d'aciers en micro-alliage, pièces forgées réalisées selon le procédé et appareil permettant la mise en oeuvre du procédé |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3201204C2 (de) * | 1982-01-16 | 1983-12-22 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | "Verwendung eines Kohlenstoff-Mangan-Stahles für Bauteile mit hoher Festigkeit und Zähigkeit bei einfacher Wärmebehandlung" |
| DE102004022248B4 (de) * | 2004-05-04 | 2007-06-14 | Zf Friedrichshafen Ag | Verfahren zur Herstellung von Kugeln oder Kugelsegmenten, sowie danach hergestelltes Kugelelement für zweiteilige Kugelzapfen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173782A (en) * | 1962-06-13 | 1965-03-16 | Bethlehem Steel Corp | Vanadium nitrogen steel |
| DE2210915A1 (de) * | 1972-03-07 | 1973-09-20 | Hoesch Werke Ag | Verfahren zur herstellung von apparaterohren |
| DE2350370A1 (de) * | 1973-10-08 | 1975-04-17 | Volkswagenwerk Ag | Verfahren zum herstellen eines schmiedeteils aus stahl |
| GB1441695A (en) * | 1974-03-04 | 1976-07-07 | Towmotor Corp | High strength steel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1342582A (en) * | 1970-03-20 | 1974-01-03 | British Steel Corp | Rail steel |
-
1980
- 1980-03-12 DE DE3009443A patent/DE3009443C2/de not_active Expired
-
1981
- 1981-02-21 EP EP81101268A patent/EP0035681B1/fr not_active Expired
- 1981-02-21 AT AT81101268T patent/ATE3652T1/de active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3173782A (en) * | 1962-06-13 | 1965-03-16 | Bethlehem Steel Corp | Vanadium nitrogen steel |
| DE2210915A1 (de) * | 1972-03-07 | 1973-09-20 | Hoesch Werke Ag | Verfahren zur herstellung von apparaterohren |
| DE2350370A1 (de) * | 1973-10-08 | 1975-04-17 | Volkswagenwerk Ag | Verfahren zum herstellen eines schmiedeteils aus stahl |
| GB1441695A (en) * | 1974-03-04 | 1976-07-07 | Towmotor Corp | High strength steel |
Non-Patent Citations (1)
| Title |
|---|
| TRANSACTIONS A.S.M.E., Serie B: Journal of engineering for industry, Band 93, Nr. 4, November 1971, Seiten 1169-1170 A.J. SCHILLER et al.: "The effects of vanadium in high srtength low alloy steels" * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0572246A1 (fr) * | 1992-05-29 | 1993-12-01 | Imatra Steel Oy Ab | Pièce forgée et procédé pour sa fabrication |
| WO2008028447A1 (fr) | 2006-09-01 | 2008-03-13 | Georgsmarienhütte Gmbh | Acier et procédé de transformation pour produire des pièces mécaniques pouvant être séparées par rupture présentant une résistance accrue |
| JP2010501733A (ja) * | 2006-09-01 | 2010-01-21 | ゲオルクスマリーエンヒュッテ ゲゼルシャフト ミット ベシュレンクテル ハフツング | より強度の高い、破断分離可能な機械部材を製造するための鋼、および加工方法 |
| AU2007294317B2 (en) * | 2006-09-01 | 2011-10-13 | Georgsmarienhutte Gmbh | Steel, and processing method for the production of higher-strength fracture-splittable machine components |
| EP2764127B1 (fr) | 2011-10-07 | 2015-08-12 | Babasaheb Neelkanth Kalyani | Procédé permettant d'améliorer la résistance à la fatigue d'aciers en micro-alliage, pièces forgées réalisées selon le procédé et appareil permettant la mise en oeuvre du procédé |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE3652T1 (de) | 1983-06-15 |
| DE3009443C2 (de) | 1981-11-19 |
| EP0035681B1 (fr) | 1983-06-01 |
| DE3009443A1 (de) | 1981-09-17 |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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