CN1386885A - Spring steel for vibration damping of high-speed train railway and its mfg. process - Google Patents
Spring steel for vibration damping of high-speed train railway and its mfg. process Download PDFInfo
- Publication number
- CN1386885A CN1386885A CN 01113970 CN01113970A CN1386885A CN 1386885 A CN1386885 A CN 1386885A CN 01113970 CN01113970 CN 01113970 CN 01113970 A CN01113970 A CN 01113970A CN 1386885 A CN1386885 A CN 1386885A
- Authority
- CN
- China
- Prior art keywords
- spring steel
- rolling
- vibration damping
- speed train
- temperatures
- 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
Abstract
A spring steel for damping the vibration of high-speed train contains C (0.48-0.54 wt%), Mn (1.15-14.5 wt.%), Si (1.3-1.6 wt.%), Cr (0.8-1.1 wt.%), P (0-0.02 wt.%), S (0-0.02 wt.%), V (0.15-0.25 wt.%), Mo (0-0.1 wt.%) and Fe (the balance), and is prepared through controlled rolling, controlled cooling and heat treating. Its advantages are low cost, high strength, high plasticity and high toughness.
Description
The invention belongs to metallic substance spring steel class and manufacture method thereof.
At present, homemade spring steel is carried out GB/T1222-1984＜spring steel 〉, 60Si2CrVA σ b 〉=1860MPa that wherein tensile strength of mechanical property is the highest, and its plasticity δ
5〉=6%,
〉=20%; Abroad, Japanese spring steel is carried out JISG4801-1984＜spring steel 〉, mechanical property σ b 〉=1230MPa, δ 〉=9%,
〉=20%; The characteristic index σ in kind b 〉=1650MPa of Russia Mitchell company, δ 〉=10%,
〉=40%.
Bullet train needs vibration-control system, and external bullet train speed per hour all reaches 300km/h～400km/h, adopts the air cushion damping, does not use spring steel.The China railways speed-raising reaches 200km/h, the high strength, the high-plasticity spring that need the bullet train vibration damping to use, and its mechanical performance index is σ b 〉=1860MPa, δ 〉=9%,
〉=30%.Current spring steel does not reach requirement, mainly is that plasticity and toughness are on the low side.The high strength of Pohang Iron ﹠ Steel Co., Ltd. of Korea S invention, high-toughness spring steel (Chinese patent 94191328.7 is open), its chemical ingredients (weight %): C 0.5～0.7, Mn 0.3～1.5, Si 1.0～3.5, Cr 0.3～1.0, V (or Nb) 0.05～0.5, P≤0.02, S≤0.02, Ni 0.5～5.0 and Fe are surplus.By adjusting and control C, Si and the expensive Ni of adding, obtain the high anti-ability (resistance to deformation power) of sinking.Be mainly used in the circle formula and the leaf spring steel of suspension automobile.
The object of the present invention is to provide a kind of low cost, high strength, high-plasticity, be applicable to that the high-speed train railway damping is with spring steel and manufacture method.Wherein by reducing the plasticity that C content improves steel, increase the Mn amount and to replenish owing to reducing C content intensity is worsened, and do not lose plasticity again, increase Cr and prevent decarburization, adding a spot of Mo increases temper resistance.Provide a kind of low cost, high strength, high-plasticity high-speed train railway damping spring steel manufacture method simultaneously, comprising controlled rolling, technology for controlled cooling and thermal treatment process.
The present invention adopts following technical scheme:
Spring steel composition (weight %) among the present invention: C 0.48～0.54, Mn 1.15～14.5, Si 1.30～1.60, Cr 0.80～1.10, P≤0.020, S≤0.020, V0.15～0.25, Mo≤0.10 and Fe are surplus.
The invention provides a kind of spring steel manufacturing process, is to prepare burden → electric furnace+LF stove refining+VD vacuum-treat smelting → die casting → red commentaries on classics → breaking down cogging → flaw detection, reconditioning → rolling → finishing, thermal treatment → packing warehouse-in by the chemical ingredients proportioning that provides.
Wherein controlled rolling technology for controlled cooling system:
1000 ℃～1050 ℃ of Heating temperatures;
980 ℃～1000 ℃ of start rolling temperatures;
830 ℃～880 ℃ of finishing temperatures.
System of heat treatment process wherein:
Heating temperature: 900 ℃ ± 30 ℃;
Oil quenching;
Tempering temperature: 430 ℃ ± 50 ℃.
Reason with the selected scope of chemical ingredients is described below below:
C: the hypoeutectoid guiding principle increases with C content, and the ferrite relative quantity reduces, and the perlite relative quantity increases, and residual austenite r
RQuantity increases.After deliberation, C content increases that plasticity is reduced influence is little when C≤0.50%, when C 〉=0.50%, increases plasticity with C content and sharply reduces yield tensile ratio (σ
0.2/ σ
b) also reduce, remained austenite content increases, and causes decrease of fatigue strength.Therefore C content should be controlled more on the low sidely, guarantees the design requirements r of spring steel
R＜23%.So carbon content selected 0.48%～0.54%.
Si:Si does not form carbide in steel, be the important element that influences carbide morphology and spacing in the steel, can improve the elastoresistance ability that goes down.Si 〉=1.00% o'clock, carbide is particulate state substantially; Along with Si content increases, carbide particle is tiny further, spacing will reduce; When Si 〉=1.5%, carbide particle size, spacing will not have big the variation, and the elastoresistance ability that goes down does not also have big variation; When Si 〉=2.0%, plasticity and toughness (
) significantly reduce.Therefore fix on 1.30%～1.60%.
Mn: have refine pearlite to improve the effect of intensity, enhancing hardening capacity.Because turning down of C content causes loss of strength to be remedied by Mn.It is suitable with Mn increase by 0.30% intensity that is improved that statistical results show, C content increase by 0.10% intensity that is improved.When Mn content is on the low side, during quenching the martensitic transformation of spring steel core insufficient, and Mn 〉=1.50% o'clock makes grain coarsening reduce toughness.Therefore manganese should be controlled at 1.15%～1.45%.
Cr:Cr can significantly increase the hardening capacity of guiding principle.The avidity of Cr and C is better than Fe and Mn, can suppress the high decarburization that produces owing to Si.But Cr 〉=1.50% o'clock, the tempered structure of guiding principle is inhomogeneous, is unfavorable for the elastoresistance ability that goes down, so be controlled at 0.80%～1.10%.
V: add alloying element V, grain-size in the time of can effectively reducing low temperature rolling and is being quenched-form precipitation hardening during tempering, is controlled at 0.15%～0.25%.
Mo: a spot of Mo increases temper resistance.Mo≤0.10％。
P≤0.020%, S≤0.020%, and Fe is surplus.
The reason that the present invention limits the process system condition is described below:
Manufacture method provided by the invention, wherein rolling process is taked the controlled rolling technology for controlled cooling, processing parameter:
1000 ℃～1050 ℃ of Heating temperatures;
980 ℃～1000 ℃ of start rolling temperatures;
830 ℃～880 ℃ of finishing temperatures.
Rolling process is divided into three phases:
1. rolling temperature is controlled at the austenite recrystallization zone, and repeat-rolling is recrystallize repeatedly, makes the austenite crystal refinement;
2. descend in the regional rolling austenite crystal refinement again that makes of the non-recrystallize of austenite with rolling temperature;
By above-mentioned two processes mainly is that control generates tissue and form (degree of refinement of unit organization).
3. roll after cool off, obtain ideal F+P mixture ratio: F content about 10%～20% and thin flaky P tissue.
The controlled rolling technology for controlled cooling is for thermal treatment provides favorable tissue.
Manufacture method provided by the invention, wherein heat treatment step processing parameter:
Heating temperature: 900 ℃ ± 30 ℃;
Oil quenching;
Tempering temperature: 430 ℃ ± 50 ℃.
Quenching temperature is controlled at about 900 ℃, the fully solid solution of temperature subcarbide, and temperature is too high will to cause grain growth; Tempering temperature is controlled at 430 ℃ ± 50 ℃, is according to the different service requirementss to spring, selects different tempering temperatures.Intensity that temperature is on the low side improves, but plasticity reduces; Temperature drift plasticity improves, but the intensity reduction, so the present invention selects tempering temperature according to the spring steel for vibration damping of high-speed train railway performance requriements.
The present invention compared with prior art has following advantage:
First uses cheap starting material (as high C-Cr etc.Starting material total cost ratio contains the Ni steel can hang down 1000 yuan～3000 yuan/t steel) and adopt advanced rolling method to have higher economic benefit.
Second significantly improves the comprehensive mechanical property of steel equally, and especially plasticity increases substantially: σ b 〉=1860MPa, σ s 〉=1650MPa, δ 〉=9% and
〉=30%.
The 3rd spring steel versatility of the present invention is stronger.By the adjustment of tempering temperature, different spring performances can be provided, be not only applicable to the vibration damping of high-speed train railway spring, also the universal spring that uses applicable to automobile hanging spring and other field.
Specific embodiments of the invention:
By chemical ingredients proportion ingredient two stoves steel-making of the present invention.
Embodiment 1
Heat (batch) number: 010
1214
The rolling process processing parameter:
1030 ℃～1050 ℃ of Heating temperatures;
980 ℃～1000 ℃ of start rolling temperatures;
830 ℃～850 ℃ of finishing temperatures.
Through 900 ℃ * 25min oil quenching, after again through 390 ℃ * 120min (water-cooled) tempering.Mechanical property is: σ b 〉=1940MPa, σ s 〉=1760MPa, δ 〉=9% He
〉=42%.
Embodiment 2 heat (batch) numbers 010
1215Rolling process controlled rolling technology for controlled cooling parameter:
1010 ℃～1050 ℃ of Heating temperatures;
980 ℃～1000 ℃ of start rolling temperatures;
850 ℃ of finishing temperatures～88O ℃.Through 900 ℃ * 30min oil quenching, after again through 400 ℃ * 120min (water-cooled) tempering.Mechanical property is: σ b 〉=1900MPa, σ s 〉=1730MPa, δ 〉=11% He
〉=38%.
By embodiment 1 and 2, visible as long as adopt specified chemical composition scope interior composition proportion, rolling technology system and system of heat treatment process, it has all obtained higher intensity and plasticity.
Claims (3)
1 one kinds of spring steel for vibration damping of high-speed train railway, it is characterized in that chemical ingredients (weight %) proportioning is: C 0.48～0.54, Mn 1.15～14.5, Si 1.30～1.60, Cr 0.80～1.10, P≤0.020, S≤0.020, V0.15～0.25, Mo≤0.10 and Fe are surplus.
2 one kinds of spring steel for vibration damping of high-speed train railway manufacturing process are prepared burden → electric furnace+LF stove refining+VD vacuum-treat → die casting → red commentaries on classics → breaking down cogging → flaw detection, reconditioning → rolling → finishing, thermal treatment → packing warehouse-in by the chemical ingredients proportioning that claim 1 provides.
It is characterized in that wherein rolling technology system:
1000 ℃～1050 ℃ of Heating temperatures;
980 ℃～1000 ℃ of start rolling temperatures;
830 ℃～880 ℃ of finishing temperatures.
3 one kinds of spring steel for vibration damping of high-speed train railway manufacturing process are prepared burden → electric furnace+LF stove refining+VD vacuum-treat → die casting → red commentaries on classics → breaking down cogging → flaw detection, reconditioning → rolling → finishing, thermal treatment → packing warehouse-in by the chemical ingredients proportioning that claim 1 provides.
It is characterized in that wherein system of heat treatment process:
Heating temperature: 900 ℃ ± 30 ℃;
Oil quenching;
Tempering temperature: 430 ℃ ± 50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011139706A CN1165634C (en) | 2001-05-17 | 2001-05-17 | Spring steel for vibration damping of high-speed train railway and its mfg. process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011139706A CN1165634C (en) | 2001-05-17 | 2001-05-17 | Spring steel for vibration damping of high-speed train railway and its mfg. process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1386885A true CN1386885A (en) | 2002-12-25 |
| CN1165634C CN1165634C (en) | 2004-09-08 |
Family
ID=4660665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011139706A Expired - Fee Related CN1165634C (en) | 2001-05-17 | 2001-05-17 | Spring steel for vibration damping of high-speed train railway and its mfg. process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1165634C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151693A (en) * | 2010-12-02 | 2011-08-17 | 大冶特殊钢股份有限公司 | Method for rolling low-hardness small-sized spring steel |
| CN103484781A (en) * | 2013-09-26 | 2014-01-01 | 宝山钢铁股份有限公司 | High-strength and high-toughness spring steel and manufacturing method thereof |
| CN101553589B (en) * | 2006-12-08 | 2015-08-26 | 杰富意钢铁株式会社 | The parts that damping capacity is excellent and manufacture method thereof and the steel plate used as the parts that damping capacity is excellent |
| CN107557672A (en) * | 2017-10-30 | 2018-01-09 | 太湖县爱杰机械铸造有限公司 | A kind of automobile hanging spring steel and preparation method thereof |
| CN107723596A (en) * | 2017-10-16 | 2018-02-23 | 武汉钢铁有限公司 | A kind of excellent spring steel of anti-fatigue performance and elasticity attenuation resistance energy and production method |
| CN110653566A (en) * | 2019-09-27 | 2020-01-07 | 宜昌江峡船用机械有限责任公司 | Method for preparing exciting beam of pavement crushing vehicle |
-
2001
- 2001-05-17 CN CNB011139706A patent/CN1165634C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101553589B (en) * | 2006-12-08 | 2015-08-26 | 杰富意钢铁株式会社 | The parts that damping capacity is excellent and manufacture method thereof and the steel plate used as the parts that damping capacity is excellent |
| CN102151693A (en) * | 2010-12-02 | 2011-08-17 | 大冶特殊钢股份有限公司 | Method for rolling low-hardness small-sized spring steel |
| CN103484781A (en) * | 2013-09-26 | 2014-01-01 | 宝山钢铁股份有限公司 | High-strength and high-toughness spring steel and manufacturing method thereof |
| CN103484781B (en) * | 2013-09-26 | 2016-06-01 | 宝山钢铁股份有限公司 | A kind of high-strength and high-ductility spring steel and manufacture method thereof |
| CN107723596A (en) * | 2017-10-16 | 2018-02-23 | 武汉钢铁有限公司 | A kind of excellent spring steel of anti-fatigue performance and elasticity attenuation resistance energy and production method |
| CN107557672A (en) * | 2017-10-30 | 2018-01-09 | 太湖县爱杰机械铸造有限公司 | A kind of automobile hanging spring steel and preparation method thereof |
| CN110653566A (en) * | 2019-09-27 | 2020-01-07 | 宜昌江峡船用机械有限责任公司 | Method for preparing exciting beam of pavement crushing vehicle |
| CN110653566B (en) * | 2019-09-27 | 2022-01-18 | 宜昌江峡船用机械有限责任公司 | Method for preparing exciting beam of pavement crushing vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1165634C (en) | 2004-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3831970B1 (en) | Spring steel having superior fatigue life, and manufacturing method for same | |
| CN107587079B (en) | Nitrogenous microalloying spring steel and preparation method thereof | |
| WO2015197007A1 (en) | Carburized alloy steel, method for preparing same, and use thereof | |
| CN104233109B (en) | Heat-treating process of high-speed train axle containing niobium and titanium | |
| CN106521315B (en) | A kind of high-intensity and high-tenacity heavy haul train wheel-use steel material and its heat treatment method | |
| CN107557671B (en) | Microalloying spring steel and preparation method thereof | |
| CN101270453B (en) | Ultrahigh-strength thermal forming martensitic steel | |
| CN103498107A (en) | High-boron high-chromium low-carbon high-temperature-resistant wear-resisting alloy steel and manufacturing method thereof | |
| CN101275200A (en) | Hotforming martensitic steel | |
| CN103409682B (en) | The method of high-carbon carbon steel wire production fine steel wire | |
| WO2014112532A1 (en) | Si-KILLED STEEL WIRE ROD HAVING EXCELLENT FATIGUE PROPERTIES, AND SPRING USING SAME | |
| CN107988564B (en) | A kind of ultra-fine grain ultra-high strength and toughness high speed axle steel and its heat treatment method | |
| CN107587068A (en) | A kind of tensile strength >=2100MPa spring steel and production method | |
| CN107988563A (en) | A kind of fine grain ultra-high strength and toughness high speed axle steel and its heat treatment method | |
| CN1851025A (en) | High strength spring steel with excellent anti-fatigue property | |
| CN105483555A (en) | Spring steel as well as preparation method thereof and thermal treatment method thereof | |
| CN1021918C (en) | Process for improving cold formability of heat-treatable steels | |
| CN113737099B (en) | Tool steel suitable for large-deformation cold machining forming and preparation method thereof, and sleeve and preparation method thereof | |
| CN111471923A (en) | Thin-wall nodular cast iron and manufacturing method thereof | |
| CN1165634C (en) | Spring steel for vibration damping of high-speed train railway and its mfg. process | |
| CN1252455A (en) | Superhigh-chrome wear-resistant white cast iron and its production process | |
| CN103451554B (en) | A kind of clack box metallic substance and preparation method thereof | |
| CN104480400B (en) | A kind of C-N-B composite hardening high wear-resisting cold process mould steel | |
| CN107988553B (en) | A kind of high tenacity high speed axles steel and its heat treatment method | |
| CN114086053B (en) | Ductile cast iron member having excellent low-temperature toughness and method for producing same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: JINNIU CO., LTD., DALIAN Free format text: FORMER OWNER: DALIAN IRON + STEEL GROUP CORP. LTD. Effective date: 20020822 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20020822 Applicant after: Jinniu Co., Ltd., Dalian Applicant before: Dalian Iron & Steel Group Co., Ltd. |
|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040908 Termination date: 20100517 |