WO2004048628A1 - Verwendung einer stahllegierung als werkstoff zur herstellung von dickwandigen rohrbauteilen für kraftfahrzeuge - Google Patents
Verwendung einer stahllegierung als werkstoff zur herstellung von dickwandigen rohrbauteilen für kraftfahrzeuge Download PDFInfo
- Publication number
- WO2004048628A1 WO2004048628A1 PCT/DE2003/003925 DE0303925W WO2004048628A1 WO 2004048628 A1 WO2004048628 A1 WO 2004048628A1 DE 0303925 W DE0303925 W DE 0303925W WO 2004048628 A1 WO2004048628 A1 WO 2004048628A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel alloy
- air
- motor vehicles
- thick
- hardened
- Prior art date
Links
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
- C22C38/18—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
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
Definitions
- Torque-transmitting components in motor vehicles are generally made from solid material.
- drive shafts which transmit the engine power to the wheels of a motor vehicle
- torques of up to 2000 numbers are generated.
- drive shafts can be easily excited to vibrate.
- Solid material drive shafts are relatively inexpensive to manufacture, but they have a very low first natural bending frequency and a high weight, which is considered to be particularly disadvantageous.
- Hollow-drilled shafts are known for reducing weight. The choice of materials is problematic since the aim is to use alternative materials of sufficient strength that are as cost-effective as possible.
- Chassis stabilizers in tubular construction are also known, although the material utilization has to be increased to a level of tension which is unprecedented in the automotive industry and, compared to tubular stabilizers made of solid material, to a 40% higher level. Weight advantages in the double-digit percentage range can be achieved.
- Tubes for hollow shafts are usually made from hardenable tempered steels, e.g. 34 MnB5.
- Such pipes according to DIN 2393 or DIN 2394 are usually formed by round kneading in the normal or soft annealed condition. This is followed by a heat treatment (water treatment). Finally, the finishing is done.
- the system concept for pipes made in this way from water-hardenable tempering steels with the process steps hardening, water quenching, tempering, is relatively complex and therefore prone to failure.
- the water quenching that follows hardening also has the disadvantage that very high residual stresses are induced, which can lead to a delay in the hardness of the workpiece.
- the object of the invention is to disclose a steel alloy for use as a material for the production of thick-walled pipe components for motor vehicles, which enables higher strength, better deformability and simplified heat treatment in comparison to previously used materials, in order to simplify thick-walled pipe components in this way and to be able to manufacture more cheaply.
- the use of the proposed steel alloy is particularly suitable for achieving the desired component strength due to the much simpler heat treatment, and overall fulfills the requirements mentioned in the task.
- the steel alloy described is based on an alloy concept that enables air hardening or air conditioning. A water quench that was previously required is no longer available. Air cooling of the thick-walled pipe components after hardening, in contrast to water quenching, leads to less high internal stress within the pipe components, so that it may even be possible to do without the subsequent tempering of the workpieces that was previously required. With suitable temperature control, subsequent straightening and machining processes can be largely restricted. The degree of scaling is also significantly lower with air-hardened or air-tempered pipe components than with water quenching. Scaling can even be avoided entirely under a protective gas atmosphere.
- the pipe components manufactured using the claimed steel alloy also have better fatigue strength than comparable pipe components made of other steel alloys. Furthermore, due to the lower carbon content, better ductility is possible, e.g. by kneading in the soft annealed condition.
- vanadium (carbo) nitrides which have extremely positive properties on the steel alloy used and for the have use of the steel alloy according to the invention.
- the vanadium (carbo) nitrides formed by the targeted addition of nitrogen contribute to the strengthening of precipitation and refinement. It has been shown that with mass fractions of nitrogen in a range of 0.005% and 0.05% on the one hand enough carbonitrides are formed and on the other hand the nitrogen is sufficiently bound by vanadium.
- Thick-walled pipe components in the sense of the invention are those in which the ratio of the outer diameter (AD) of the pipe component to the wall thickness (WD) of the pipe component is less than 14 (AD / WD ⁇ 14) and preferably less than 8 (AD / WD ⁇ 8 ).
- the ratio AD / WD can also be less than 6.
- the ratio AD / WD can vary over the length of the pipe component, but the thick-walled structure is retained in the above sense.
- Thick-walled pipe components are primarily torque-transmitting pipe components, such as drive shafts, transmission shafts, camshafts, but also other highly stressed pipe components, such as e.g. Stabilizers and damper piston rods.
- the steel alloy used can be set to tensile strengths of Rm> 950 N / mm 2 and yield strengths of Rp0.2> 700 N / mm 2 with an elongation at break A 5> 14%.
- Air hardening is preferably carried out at 950 ° C ⁇ 15 ° C in a continuous furnace under protective gas.
- the steel alloy When air-tempered, the steel alloy has a tensile strength Rm> 850 N / mm 2 and a yield strength of Rp0.2> 700 N / mm 2 with an elongation at break of A5> 15%.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03767465A EP1565588B1 (de) | 2002-11-27 | 2003-11-26 | Verwendung einer stahllegierung als werkstoff zur herstellung von dickwandigen rohrbauteilen für kraftfahrzeuge |
DE50302755T DE50302755D1 (de) | 2002-11-27 | 2003-11-26 | Verwendung einer stahllegierung als werkstoff zur herstellung von dickwandigen rohrbauteilen für kraftfahrzeuge |
AU2003291954A AU2003291954A1 (en) | 2002-11-27 | 2003-11-26 | Use of a steel alloy as a material for producing thick-walled tubular parts for motor vehicles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10255264.9 | 2002-11-27 | ||
DE2002155264 DE10255264A1 (de) | 2002-11-27 | 2002-11-27 | Verwendung einer Stahllegierung als Werkstoff zur Herstellung von dickwandigen Rohrbauteilen für Kraftfahrzeuge |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004048628A1 true WO2004048628A1 (de) | 2004-06-10 |
Family
ID=32318717
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2003/003925 WO2004048628A1 (de) | 2002-11-27 | 2003-11-26 | Verwendung einer stahllegierung als werkstoff zur herstellung von dickwandigen rohrbauteilen für kraftfahrzeuge |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1565588B1 (de) |
AU (1) | AU2003291954A1 (de) |
DE (2) | DE10255264A1 (de) |
WO (1) | WO2004048628A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007033950A1 (de) * | 2006-07-19 | 2008-01-31 | Benteler Automobiltechnik Gmbh | Werkstück aus einer hochfesten Stahllegierung und dessen Verwendung |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2750867A1 (de) * | 1977-11-14 | 1979-05-17 | Benteler Werke Ag | Verfahren zur herstellung eines rohrfoermigen stahlprofils fuer die tuerverstaerkung |
JPH05302119A (ja) * | 1992-03-27 | 1993-11-16 | Sumitomo Metal Ind Ltd | 高強度自動車部品の製造方法 |
EP0753597A2 (de) * | 1995-07-06 | 1997-01-15 | Benteler Ag | Rohre für die Herstellung von Stabilisatoren und Herstellung von Stabilisatoren aus solchen Rohren |
WO2003069005A2 (de) * | 2002-02-15 | 2003-08-21 | Benteler Automobiltechnik Gmbh | Verwendung einer stahllegierung als werkstoff für rohre zur herstellung von druckgasbehältern oder als werkstoff zur herstellung von formbauteilen im stahlleichtbau |
-
2002
- 2002-11-27 DE DE2002155264 patent/DE10255264A1/de not_active Withdrawn
-
2003
- 2003-11-26 WO PCT/DE2003/003925 patent/WO2004048628A1/de not_active Application Discontinuation
- 2003-11-26 EP EP03767465A patent/EP1565588B1/de not_active Expired - Fee Related
- 2003-11-26 DE DE50302755T patent/DE50302755D1/de not_active Expired - Lifetime
- 2003-11-26 AU AU2003291954A patent/AU2003291954A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2750867A1 (de) * | 1977-11-14 | 1979-05-17 | Benteler Werke Ag | Verfahren zur herstellung eines rohrfoermigen stahlprofils fuer die tuerverstaerkung |
JPH05302119A (ja) * | 1992-03-27 | 1993-11-16 | Sumitomo Metal Ind Ltd | 高強度自動車部品の製造方法 |
EP0753597A2 (de) * | 1995-07-06 | 1997-01-15 | Benteler Ag | Rohre für die Herstellung von Stabilisatoren und Herstellung von Stabilisatoren aus solchen Rohren |
WO2003069005A2 (de) * | 2002-02-15 | 2003-08-21 | Benteler Automobiltechnik Gmbh | Verwendung einer stahllegierung als werkstoff für rohre zur herstellung von druckgasbehältern oder als werkstoff zur herstellung von formbauteilen im stahlleichtbau |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 018, no. 107 (C - 1169) 22 February 1994 (1994-02-22) * |
Also Published As
Publication number | Publication date |
---|---|
EP1565588A1 (de) | 2005-08-24 |
DE50302755D1 (de) | 2006-05-11 |
AU2003291954A1 (en) | 2004-06-18 |
EP1565588B1 (de) | 2006-03-22 |
DE10255264A1 (de) | 2004-06-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1746176B1 (de) | Profilierte Stahlgegenstände mit verzögerter Bruchfestigkeit und Zugfestigkeit 1600MPa und mehr und dessen Herstellungsverfahren | |
JP3524229B2 (ja) | 高靭性肌焼き鋼製機械部品およびその製法 | |
US5527401A (en) | High toughness and high strength untempered steel and processing method thereof | |
WO1999005333A1 (fr) | Acier cemente particulierement capable d'empecher la recristallisation secondaire des particules pendant la cementation, procede de fabrication, et matiere brute formee pour pieces cementees | |
WO2013051513A1 (ja) | ボルト用鋼線及びボルト、並びにその製造方法 | |
JP2008539331A (ja) | 焼戻しマルテンサイト鋼、該鋼からの部品の製造方法、及びそのように得られた部品 | |
DE102006017263A1 (de) | Kurbelwelle und Verfahren zu deren Herstellung | |
JP3562192B2 (ja) | 高周波焼入用部品およびその製造方法 | |
KR20140129081A (ko) | 연질화용 강 및 이 강을 소재로 하는 연질화 부품 | |
DE102008040689B4 (de) | Kugelzapfen und -hülsen aus hochmanganhaltigem Stahl | |
JP3606024B2 (ja) | 高周波焼入部品およびその製造方法 | |
KR20050061476A (ko) | 고주파 담금질용 강재, 그것을 이용한 고주파 담금질 부재, 및 그들의 제조방법 | |
JP6454635B2 (ja) | 耐遅れ破壊性および疲労特性に優れた高強度ボルト、およびその製造方法 | |
JP2004238702A (ja) | 耐低サイクル衝撃疲労特性に優れた浸炭部品 | |
DE10105809C1 (de) | Verfahren zur Herstellung einer Kette, insbesondere einer Rundstahlkette aus Vergütungsstahl | |
US20060057419A1 (en) | High-strength steel product excelling in fatigue strength and process for producing the same | |
EP3040437A1 (de) | Mechanisches strukturbauteil und verfahren zur herstellung davon | |
DE19950264B4 (de) | Verfahren zur Herstellung eines Doppelgelenks mit verbesserter Kaltverformbarkeit und Festigkeit | |
EP1565588A1 (de) | Verwendung einer stahllegierung als werkstoff zur herstellung von dickwandigen rohrbauteilen für kraftfahrzeuge | |
DE69909940T2 (de) | Teile aus martensitischem rostfreiem Stahl und Verfahren zu ihrer Herstellung | |
JP3502744B2 (ja) | 疲労特性に優れた機械構造用軸状部品の製造方法 | |
JPH08260039A (ja) | 浸炭肌焼鋼の製造方法 | |
DE102016208400A1 (de) | Ultrahochfester Federstahl für eine Ventilfeder | |
JP3211627B2 (ja) | 窒化用鋼およびその製造法 | |
EP3517639A1 (de) | Aufgekohlte wellenkomponente |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003767465 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2003767465 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 2003767465 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |