EP0181791B1 - Niedriglegierter Manganstahl für Fahrradrahmenrohre, entsprechendes Rahmenrohr und dessen Herstellungsverfahren - Google Patents
Niedriglegierter Manganstahl für Fahrradrahmenrohre, entsprechendes Rahmenrohr und dessen Herstellungsverfahren Download PDFInfo
- Publication number
- EP0181791B1 EP0181791B1 EP85401924A EP85401924A EP0181791B1 EP 0181791 B1 EP0181791 B1 EP 0181791B1 EP 85401924 A EP85401924 A EP 85401924A EP 85401924 A EP85401924 A EP 85401924A EP 0181791 B1 EP0181791 B1 EP 0181791B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- less
- low
- manganese
- manufacture
- tubes
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000000034 method Methods 0.000 title description 2
- 229910000617 Mangalloy Inorganic materials 0.000 title 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 229910052710 silicon Inorganic materials 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 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 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 239000010703 silicon Substances 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000005864 Sulphur Substances 0.000 claims 3
- 239000004411 aluminium Substances 0.000 claims 3
- 229910000851 Alloy steel Inorganic materials 0.000 claims 2
- 229910000914 Mn alloy Inorganic materials 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 23
- 239000010959 steel Substances 0.000 description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 2
- 238000010606 normalization Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- UDHXJZHVNHGCEC-UHFFFAOYSA-N Chlorophacinone Chemical compound C1=CC(Cl)=CC=C1C(C=1C=CC=CC=1)C(=O)C1C(=O)C2=CC=CC=C2C1=O UDHXJZHVNHGCEC-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
Definitions
- the present invention relates to the use of a steel lightly alloyed with manganese for the manufacture of thin tubes cold drawn and in particular of tubes of cycle frames.
- AFNOR 20M5 a steel weakly alloyed with manganese, the composition of which is by weight: 0.16 to 0.22% of carbon, 1.10 to 1.40% of manganese, 0.15 to 0, 35% silicon, less than 0.035% phosphorus, less than 0.035% sulfur, the balance being formed by iron and the usual impurities.
- Steels of the aforementioned type are used for tubes of cycle frames. These steels must be able to be brazed when the frames are manufactured. We seek to lighten the frames as much as possible and we need steels with maximum tensile strength.
- Structural steels which contain, in addition to manganese, a certain proportion of vanadium generally close to 0.10% or slightly higher.
- Steels are also known whose composition is as follows: C ⁇ 0.20% (preferably : 50.18%), Mn 0.90-1.60%, Si 0.10-0.50%, P s0, 040% (preferably ⁇ 0.030%), S ⁇ 0.040% (preferably : 50.030%), AI preferably? 0.015%, Fe the balance.
- These steels the subject of document Werkstoffblatt 240R, Ausgabe Juli 1974, der Mannesmannrôhren-Werke AG, 4-Düsseldorf, Postfach 1104, are used for the manufacture of tubes.
- such structural steels have never been used for the manufacture of cold drawn seamless tubes for cycle frames and their structures and properties have never been adapted for such use in the form of thin tubes which can be brazed for the manufacture of cycle frames.
- the object of the invention is therefore to propose the use, for the manufacture of cold-drawn seamless tubes for cycle frames, of a steel low in alloy with manganese consisting, by weight, of 0.16 to 0.20 % carbon, 1.20-1.50% manganese, 0.15-0.50% silicon, up to 0.035% phosphorus, up to 0.035% sulfur, up to 0.20% nickel, up to 0.20% chromium, up to 0.05% molybdenum, 0.050 to 0.075% vanadium, less than 0.10% copper and 0.010% tin, possibly 0.007 to 0.030% of aluminum, the balance being formed by iron and the usual impurities, the proportion of which is kept at a very low level, the steel having, after standardization treatment, a fine structure with dispersoids and a tensile strength greater than 700 N / mm 2.
- the steel according to the invention requires a specific production method which makes it possible to limit the content of impurities and residual elements to a minimum.
- phosphorus and sulfur are limited to very low values of less than 0.035% and preferably less than 0.025%.
- steel is produced by conversion to oxygen of a hematite cast iron, with stirring of the bath with an inert gas.
- the steel obtained is then cast by the rotary continuous casting process, in the form of round bars which thus have remarkable properties for the manufacture of seamless tubes.
- composition targeted for the steel is as follows: carbon 0.18%, silicon 0.35%, manganese 1.30%, vanadium 0.060%, phosphorus and sulfur: less than 0.025%.
- Aluminum can be added in the form of wires, in an ingot mold, the targeted aluminum content being 0.020%. An aluminum content of between 0.007 and 0.030% will however be accepted. Aluminum stabilizes the fine-grained structure of steel, without having a deoxidizing role.
- the steel according to the invention must contain: carbon 0.16 to 0.19%, silicon 0.33 to 0.40%, manganese 1.28 to 1 , 35%, vanadium 0.050 to 0.070%, aluminum 0.010 to 0.030%, phosphorus and sulfur: less than 0.25%.
- chromium must be limited to 0.20%, nickel to 0.20% and molybdenum to 0.050%.
- the steel may also contain residual elements such as copper and tin in tolerated contents of less than 0.10% and 0.010% respectively.
- samples are taken from certain portions of the casting bar, these samples then being forged and subjected to an analysis of their composition and also to a micrographic examination. Tensile strength is also measured on forged samples.
- the tensile strength is close to 800 N / mm 2. This resistance compares very favorably with the tensile strength obtained with steels of the 20M5 type after quenching and tempering, this resistance being of the order of 620 N / mm 2 .
- the continuous casting bar is cut into sections with a minimum length of 2 m and then cooled.
- the tube rings obtained can then be reheated and then transformed into seamless tubes by rolling. These tubes undergo a normalization treatment near 900 ° which makes it possible to develop a fine dispersoid structure and a tensile strength of the order of 800 N / mm 2.
- the cycle tubes obtained have a very high resistance to fatigue and good brazing properties, due to the fact that they allow overheating of up to 1100 ° C. without altering their mechanical properties. .
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)
- Heat Treatment Of Articles (AREA)
Claims (3)
1. Verwendung zur Herstellung von nahtlos kaltgezogenen Rohren für Fahrradrahmen; eines schwachlegierten Manganstahles, welcher in Gewichtsprozent besteht aus 0,16 bis 0,20% Kohlenstoff, 1,20 bis 1,50% Mangan, 0,15 bis 0,50% Silizium, bis 0,035% Phosphor, bis 0,035% Schwefel, bis 0,20% Nickel, bis 0,20% Chrom, bis 0,05% Molybdän, 0,050 bis 0,075% Vanadium, weniger als 0,10% Kupfer und aus 0,010% Zinn, ggfs. 0,007 bis 0,030% Aluminium, Rest Eisen und übliche Verunreinigungen, deren Anteil auf sehr niedrigem Niveau gehalten wird, wobei der Stahl nach einer Normalglühbehandlung eine Dispersoid-Feinstruktur und eine Zugfestigkeit von mehr als 700 N/mm2 hat.
2. Verwendung nach Anspruch 1 eines schwachlegierten Stahles mit 0,16 bis 0,19% Kohlenstoff, 0,3 bis 0,40% Silizium, 1,28 bis 1,35% Mangan, 0,050 bis 0,070% Vanadium, 0,010 bis 0,30% Aluminium, weniger als 0,025% Phosphor, weniger als 0,025% Schwefel, bis 0,20% Chrom, bis 0,050% Molybdän, bis 0,20% Nickel, weniger als 0,10% Kupfer und weniger als 0,010% Zinn.
3. Verwendung nach Anspruch 2 eines schwachlegierten Stahles mit im wesentlichen 0,18% Kohlenstoff, 0,35% Silizium, 1,30% Mangan, 9,060% Vanadium, 0,020% Aluminium, weniger als 0,025% Phosphor und weniger als 0,025% Schwefel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8415664A FR2571740B1 (fr) | 1984-10-12 | 1984-10-12 | Acier au manganese pour, notamment, des tubes de cycles |
| FR8415664 | 1984-10-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0181791A1 EP0181791A1 (de) | 1986-05-21 |
| EP0181791B1 true EP0181791B1 (de) | 1990-01-10 |
Family
ID=9308602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP85401924A Expired - Lifetime EP0181791B1 (de) | 1984-10-12 | 1985-10-02 | Niedriglegierter Manganstahl für Fahrradrahmenrohre, entsprechendes Rahmenrohr und dessen Herstellungsverfahren |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0181791B1 (de) |
| DE (1) | DE3575312D1 (de) |
| FR (1) | FR2571740B1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005046459B4 (de) * | 2005-09-21 | 2013-11-28 | MHP Mannesmann Präzisrohr GmbH | Verfahren zur Herstellung von kaltgefertigten Präzisionsstahlrohren |
| CN105734405A (zh) * | 2016-03-23 | 2016-07-06 | 攀钢集团成都钢钒有限公司 | 高压加氢装置用无缝钢管及其生产方法 |
-
1984
- 1984-10-12 FR FR8415664A patent/FR2571740B1/fr not_active Expired
-
1985
- 1985-10-02 DE DE8585401924T patent/DE3575312D1/de not_active Expired - Fee Related
- 1985-10-02 EP EP85401924A patent/EP0181791B1/de not_active Expired - Lifetime
Non-Patent Citations (6)
| Title |
|---|
| STAHLSCHLÜSSEL, édition 10, 1974, Verlag Stahlschlüssel Wegst K.G., page 109, réf. 76, STAS 500 * |
| STAHLSCHLÜSSEL, édition 13, 1983, Verlag Stahlschlüssel Wegst K.G., page 133, réf. 228, GOST 19282 * |
| STAHLSCHLÜSSEL, édition 13, 1983, Verlag Stahlschlüssel Wegst K.G., page 134, réf. 290, GOST 977 * |
| STAHLSCHLÜSSEL, édition 13, 1983, Verlag Stahlschlüssel Wegst K.G., page 90, réf. 110, AFNOR 20M5 * |
| THE MAKING, SHAPING AND TREATING OF STEEL, édition 9, 1971, United States Steel, pages 890-897, 905-907 * |
| Werkstoffblatt 240R, Juli 1974, Mannesmannröhren-Werke AG, Düsseldorf * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2571740B1 (fr) | 1988-05-06 |
| EP0181791A1 (de) | 1986-05-21 |
| FR2571740A1 (fr) | 1986-04-18 |
| DE3575312D1 (de) | 1990-02-15 |
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