CN101504049B - Suspension spring of high-speed locomotive steering frame and manufacturing method thereof - Google Patents
Suspension spring of high-speed locomotive steering frame and manufacturing method thereof Download PDFInfo
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- CN101504049B CN101504049B CN 200910030386 CN200910030386A CN101504049B CN 101504049 B CN101504049 B CN 101504049B CN 200910030386 CN200910030386 CN 200910030386 CN 200910030386 A CN200910030386 A CN 200910030386A CN 101504049 B CN101504049 B CN 101504049B
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Abstract
The invention relates to a suspension spring of an express locomotive steering frame and a manufacturing method thereof. The suspension spring consists of an inner spring and an outer spring, the inner spring is arranged in an outer spring tube, the spiral directions of the outer spring and the inner spring are opposite, the trademark of spring steels adopted by the inner spring and the outer spring is 52CrMoVGT, and the comprehensive performance index of the spring steels is superior to that of 52CrMoV. The manufacturing method for the suspension spring comprises the main steps: selecting materials, making flat ends, polishing and heating, winding, strengthening and shot blasting treatment, spraying paint and the like. The manufacturing method adopts the 52CrMoV4GT spring steels of a high-strength material to improve the elasticity fade resisting performance of the spring, namely, improve the capabilities of resisting relaxation and creep deformation of the spring. The materials are subjected to fault detection before winding, and subjected to transverse wave ultrasonic inspection for the first time. A spring product is subjected to magnetic particle inspection before leaving a factory so as to effectively ensure the using reliability. The spring is subjected to shot blast clear-up and shot blast reinforcement so as to improve the pressure stress of the surface, eliminate the tension stress of an inner ring and greatly improve the fatigue endurance of the spring.
Description
Technical field
The present invention relates to a kind of hanging vibration reduction device, particularly a kind of suspension spring of high-speed locomotive steering frame and preparation method thereof of high-speed locomotive steering frame, belong to the rail vehicle truck technical field.
Background technique
In the high-speed locomotive steering frame structure, axle box and framework form suspension structures by guide pillar, elastic locating sleeve, positioning seat, spring (outer spring), spring (interior spring), adjusting pad, Zhi Zhuhuan, cushion pad.Key element as the express locomotive vibration and noise reducing---bogie spring, the quality of its performance determines Operation safety, stability, travelling comfort, low noise etc., and the performance of train is played key effect.Bogie spring major function is:
(1) supporting bogie, vehicle body and passenger's's (or goods) total weight.
(2) amount of deflection of guaranteeing axletree can not derailed by trajective curve.
(3) buffering is due to the irregular side knock that bogie frame is produced of track and the wheel power to rail.
(4) buffering is due to the irregular axial impact that bogie frame is produced of track.
(5) providing bogie frame to be connected with vehicle body with axle box, wheel is connected.
In recent years, railway operation speed improves constantly, and more than bringing up to 200km/h from original 60km/h, more and more higher to the making requirement of bogie spring, traditional spring can not satisfy the requirement of express locomotive.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, in the situation that do not change each assembly boundary dimension that comprises positioning seat between original axle box and framework, provide a kind of novel high speed engine truck pendulum spring and preparation method thereof.
The technological scheme that the object of the invention realizes is: suspension spring of high-speed locomotive steering frame, it is characterized in that being provided with outer spring and inner spring, inner spring is arranged in the outer spring pipe, outer spring is opposite with inner spring Hand of spiral, the spring steel trade mark that described inside and outside spring adopts is 52CrMoV4GT, and its integrated performance index is better than 52CrMoV.Described inside and outside both ends of the spring is provided with flat bracing ring, and spring tip is provided with garden arc chamfering.
Above-mentioned suspension spring of high-speed locomotive steering frame manufacture method, comprise the following steps:
(1) select the 52CrMoV4GT spring steel of peeling, polishing;
(2) spring steel termination forging system flat one-tenth (one) word is flat, initial forging temperature is 950～1050 ℃, and final forging temperature is 800 ℃～850 ℃;
(3) to (one) word flat end surface with portable grinder reconditioning four ribs, enter long material stove after chamfering, heating-up temperature is: 950 ± 10 ℃, holding time is: 30～40 minutes;
(4) adopt the spring coiling machine coiling and molding, deformation is quenched, and reels and is controlled by CNC, and monolateral decarburized layer is controlled in 0.10, and quenching temperature is 800 ± 10 ℃; Quenching medium is water, and quench media temperature remains on 20～60 ℃, tempering temperature: 430 ± 10 ℃, and temper time 〉=4.5 hour, the tempering cooling medium is water;
(5) adopting powerful shot blasting machine to carry out reinforced peening processes;
(6) spray rust proof paint, finish paint post-drying, warehouse-in is up to the standards.
The present invention adopts high-strength material 52CrMoV4GT spring steel, improves the anti-elastic force attenuation performance of spring, namely improves spring and resists ability lax, creep.The indexs such as the composition of 52CrMoV4GT spring steel, hardness, mechanical property hardenability all meet or exceed the DIN17221 standard of Germany, are express locomotive spring optimal materials.The common spring steel capital is hot rolling material, surface decarburization serious (the monolateral approximately 0.10-0.30 of decarburized layer), surface imperfection many (cut, folding, layering, scab, microscopic crack etc.) poor dimensional precision etc., can only make the spring of general common requirement, the present invention overcomes above shortcoming after adopting the peeling polished steel, make elastic performance further optimize (because elastic force has relation with material footpath d4 power), spring fatigue life improves (improvement of surface roughness and remove the surface decarburization layer to fatigue life of spring affecting very large) greatly.The present invention adopts once heating (950 ℃ of left and right), winding shaping, and the advanced technologies that deformation is quenched, energy saving is raised the efficiency more than 30% more than 50%.This project also adopts this advanced technologies with the equipment of Britain's import, reels and is controlled by CNC, and monolateral decarburized layer is controlled in 0.10.Science is grasped quenching temperature, the parameters such as heating time, temper time, rate of cooling.The product test result shows, spring minimizing surface decarburization (only having 0.10 with interior monolateral decarburized layer), and crystal grain is thin, is improved more than 2 times the fatigue life of spring, and reduce heat treated distortion.Material will be detected a flaw before rolling, and adopts first the transversal wave ultrasonic inspection.Spring product also will be carried out magnetic particle flaw detection before dispatching from the factory, effectively guaranteed the reliability of using.Spring is cleared up shot-peening and reinforced peening, improves the pressure stress on surface, eliminates the inner ring tensile stress, has greatly improved spring fatigue life.
Suspension spring of high-speed locomotive steering frame of the present invention and high-speed locomotive steering frame are supporting, and design stress is assigned 890MPa (the domestic 650MPa of being generally) at the dynamic load stress condition, has filled up domestic blank; Materials processing is according to international standard, Chemical composition, hardness, impact toughness etc. are designed the Scientific Indicators system, work out out the hardenability characteristic curve, and to the lateral stiffness of spring, contact line length (＞D/3) made strict performance assessment criteria, adopt vacuum refining, vacuum outgas method special to raw material, oxygen content≤10PPm, hydrogen content≤1.0PPm; The advanced technologies such as the anti-oxidation processing of surface decarburization, once-through quenching heat treatment are adopted in the product manufacturing, the surface decarburization layer is controlled in 0.10mm, the spring surface hardness reaches HRC45～50 (difference of spring core and surface hardness is controlled in 3HRC), height tolerance ± 1%H under load, precision, the working life of spring are greatly improved; Adopt the sophisticated equipments such as spring rate performance Special test machine, microcomputer numerical control to control and detect, guarantee the lateral stiffness tolerance+15% of spring, axial rigidity tolerance+5%, reach advanced world standards (Domestic Correlative Standard does not require lateral stiffness).
Domestic have the research of express locomotive spring to report, but to the contact line length that spring material carries out transversal wave ultrasonic inspection, spring surpass D/3, reach more than 4,000,000 times fatigue life and the spring product that is applied on express locomotive has no report, suspension spring of high-speed locomotive steering frame of the present invention, through Ministry of Railways's product quality inspection Spot detection, technical performance index all reaches the standard-required of the UIC8220 of International Union of Railways, fatigue strength without apparent damage, is permanently deformed to 0.4mm through 4,000,000 tests.Product has obtained the consistent favorable comment of numerous high-end customers.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation that the present invention is installed on bogie;
1 outer spring in figure, 2 inner springs,
Embodiment
It is the spring steel of 52CrMoV4GT that the material of inside and outside spring adopts (species abundance in Baosteel in Shanghai is produced) steel trade mark, and its integrated performance index is better than 52CrMoV.Outer spring and inner spring, inner spring are arranged in the outer spring pipe, and outer spring is opposite with inner spring Hand of spiral, and inside and outside both ends of the spring is provided with flat bracing ring, and spring tip is provided with garden arc chamfering.
Suspension spring of high-speed locomotive steering frame manufacture method, comprise the following steps:
(1) the material selection peeling of inside and outside spring, the spring steel of polishing, (species abundance in Baosteel in Shanghai is produced) steel trade mark is the spring steel of 52CrMoV4GT, its integrated performance index is better than 52CrMoV.
(2) spring steel termination forging system flat one-tenth (one) word is flat, initial forging temperature is 950～1050 ℃, and final forging temperature is 800 ℃～850 ℃;
(3) to (one) word flat end surface with portable grinder reconditioning four ribs, enter long material stove after chamfering, heating-up temperature is: 950 ± 10 ℃, holding time is: 30～40 minutes;
(4) adopt the spring coiling machine coiling and molding, deformation is quenched, and reels and is controlled by CNC, and monolateral decarburized layer is controlled in 0.10, and quenching temperature is 800 ± 10 ℃; Quenching medium is water, and quench media temperature remains on 20～60 ℃, tempering temperature: 430 ± 10 ℃, and temper time 〉=4.5 hour, the tempering cooling medium is water;
(5) adopting powerful shot blasting machine to carry out reinforced peening processes;
(6) spray rust proof paint, finish paint post-drying, warehouse-in is up to the standards.
Claims (3)
1. a suspension spring of high-speed locomotive steering frame, is characterized in that being provided with outer spring and inner spring, and inner spring is arranged in the outer spring pipe, and outer spring is opposite with inner spring Hand of spiral, and the spring steel trade mark that described inside and outside spring adopts is 52CrMoV4GT.
2. a kind of suspension spring of high-speed locomotive steering frame according to claim 1, is characterized in that described inside and outside both ends of the spring is provided with flat bracing ring, and spring tip is provided with garden arc chamfering.
3. the manufacture method of a kind of suspension spring of high-speed locomotive steering frame as claimed in claim 1 is characterized in that comprising the following steps:
⑴ select the 52CrMoV4GT spring steel of peeling, polishing;
⑵ flat with spring steel termination forging system flat one-tenth " one " word, and initial forging temperature is 950～1050 ℃, and final forging temperature is 800 ℃～850 ℃, adopts transversal wave ultrasonic to carry out defect detecting test;
⑶ with portable grinder reconditioning four ribs, enter long material stove to " one " word flat end surface of spring steel after chamfering, heating-up temperature is: 950 ± 10 ℃, holding time is: 30～40 minutes;
⑷ adopt spring coiling machine to reel, coiling and molding, and deformation is quenched, and reels and is controlled by CNC, and monolateral decarburized layer is controlled in 0.10mm, and quenching temperature is 800 ± 10 ℃; Quenching medium is water, and quench media temperature remains on 20～60 ℃, tempering temperature: 430 ± 10 ℃, and temper time 〉=4.5 hour, the tempering cooling medium is water;
⑸ adopt powerful shot blasting machine to clear up shot-peening and reinforced peening processing on the spring of the tempering of ⑷;
⑹ spring spray rust proof paint, the finish paint post-drying that cross the shot blast that ⑸ makes, warehouse-in is up to the standards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910030386 CN101504049B (en) | 2009-03-20 | 2009-03-20 | Suspension spring of high-speed locomotive steering frame and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910030386 CN101504049B (en) | 2009-03-20 | 2009-03-20 | Suspension spring of high-speed locomotive steering frame and manufacturing method thereof |
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| CN101504049A CN101504049A (en) | 2009-08-12 |
| CN101504049B true CN101504049B (en) | 2013-06-12 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105127333A (en) * | 2015-08-28 | 2015-12-09 | 南车戚墅堰机车有限公司 | Spring rolling technology for preventing generation of decarburized layer |
| JP6998648B2 (en) * | 2016-03-25 | 2022-01-18 | 株式会社エクセディ | Lock-up device for spring assembly and torque converter with it |
| CN107584055B (en) * | 2017-09-21 | 2019-04-19 | 浙江高强度紧固件有限公司 | A kind of wind spring preparation method |
| CN113700787B (en) * | 2021-09-07 | 2023-03-14 | 贵州航天天马机电科技有限公司 | Small lateral force combined spring type force storage compensation device for erecting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4100842C1 (en) * | 1991-01-14 | 1992-05-21 | Hans Dipl.-Ing. 7310 Plochingen De Kuehl | Coil spring with several concentric spring element turns - has symmetrical spring elements to attain coincidence of load and geometrical axes |
| CN1066294A (en) * | 1991-04-29 | 1992-11-18 | 徐厚国 | Volute spring production method and production equipment thereof |
| CN101338804A (en) * | 2008-08-21 | 2009-01-07 | 喜临门集团有限公司 | Primary and secondary spring for bed mattress |
| CN201359044Y (en) * | 2009-03-20 | 2009-12-09 | 扬州弹簧有限公司 | High-speed locomotive bogie suspension spring |
-
2009
- 2009-03-20 CN CN 200910030386 patent/CN101504049B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4100842C1 (en) * | 1991-01-14 | 1992-05-21 | Hans Dipl.-Ing. 7310 Plochingen De Kuehl | Coil spring with several concentric spring element turns - has symmetrical spring elements to attain coincidence of load and geometrical axes |
| CN1066294A (en) * | 1991-04-29 | 1992-11-18 | 徐厚国 | Volute spring production method and production equipment thereof |
| CN101338804A (en) * | 2008-08-21 | 2009-01-07 | 喜临门集团有限公司 | Primary and secondary spring for bed mattress |
| CN201359044Y (en) * | 2009-03-20 | 2009-12-09 | 扬州弹簧有限公司 | High-speed locomotive bogie suspension spring |
Non-Patent Citations (1)
| Title |
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| 祖荣祥.不锈弹簧钢的发展.《特殊钢》.1995,(第03期), * |
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Denomination of invention: Suspension spring of high-speed locomotive bogie and its manufacturing method Effective date of registration: 20221018 Granted publication date: 20130612 Pledgee: Bank of China Limited Hangjiang Branch, Yangzhou Pledgor: YANGZHOU SPRING Co.,Ltd. Registration number: Y2022980018812 |