CN106475740A - A kind of manufacturing process of heavily stressed hollow stabilizing rod - Google Patents
A kind of manufacturing process of heavily stressed hollow stabilizing rod Download PDFInfo
- Publication number
- CN106475740A CN106475740A CN201510538713.8A CN201510538713A CN106475740A CN 106475740 A CN106475740 A CN 106475740A CN 201510538713 A CN201510538713 A CN 201510538713A CN 106475740 A CN106475740 A CN 106475740A
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- CN
- China
- Prior art keywords
- stabiliser bar
- finished product
- stabilizing rod
- manufacturing process
- heavily stressed
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
- B60G21/055—Stabiliser bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/14—Suspension elements of automobile vehicles
Abstract
The invention discloses a kind of manufacturing process of heavily stressed hollow stabilizing rod, including：Blanking step；Cold roll forming step；Quenching Step；Tempering step；Slightly repair cold sizing step；Inner wall shot blasting step；Inwall oil spout step；End moulding step；Refine cold sizing step；Ball blast step；And application step.Stabiliser bar after to clod wash for the present invention carries out suitable heat treatment, inwall oil spout, inner wall shot blasting and shotblasting reinforcement process, drastically increases the fatigue strength of hollow stabilizing rod, meets the technical requirements that stress levels are higher than 800MPa.
Description
Technical field
The present invention relates to the manufacturing technology of automobile stabilizer bar, the manufacturing process of more particularly, to heavily stressed hollow stabilizing rod.
Background technology
Stabiliser bar is a strength member of automobile suspension system, and its feature is to improve comfortableness by bus, reduces the magnitude of inclination when turning for the automobile simultaneously.Traditional stabiliser bar is typically processed by spring round steel, also partial automobile is had to have begun to adopt hollow stabilizing rod, but generally use stress all in below 600MPa, the material of employing can be generally below 0.3% for seamless steel pipe or welding drawn tube, the carbon content of material.
With the enhancing to environmental protection and energy-saving and emission-reduction requirement for the automobile industry, automobile requires also more and more higher to light-weighted, its parts adopting certainly will be required to have higher intensity and less material.Light-weighted propulsion, it is also proposed higher stress levels and requires to hollow stabilizing rod, therefore needs badly and a kind of can manufacture the technique that stress levels are higher than the stabiliser bar of 800MPa.
Content of the invention
The technical problem to be solved is to provide a kind of manufacturing process of heavily stressed hollow stabilizing rod, for manufacturing the hollow stabilizer rod of automobile that stress levels are higher than 800MPa.
For solving above-mentioned technical problem, the present invention adopts the technical scheme that：
A kind of manufacturing process of heavily stressed hollow stabilizing rod, comprises the following steps：
A, qualified hollow metal tube raw material is cut into design length blanking step；
B, by angle pipe equipment by material clod wash become stablize club body formation stabiliser bar semi-finished product cold roll forming step；
The quenching Step that c, the stabiliser bar semi-finished product to cold roll forming are quenched；
D, the tempering step that the stabiliser bar semi-finished product after quenching are tempered in tempering furnace；
E, slightly repaiied cold sizing step to what the stabiliser bar semi-finished product after tempering slightly repaiied correction；
F, to the inner wall shot blasting step slightly repairing the stabiliser bar semi-finished product after cold sizing and carrying out internal wall shot-blasting strengthening；
G, the stabiliser bar semi-finished product after inner wall shot blasting are carried out with the inwall oil spout step of inwall oil spout process；
H, the two ends of stabiliser bar semi-finished product are carried out the end moulding step of end moulding；
I, the refine cold sizing step that the stabiliser bar finished product after end moulding is accurately revised；
J, stabiliser bar finished product outer surface is carried out with the ball blast step of Shot Blasting；
K, stabiliser bar surface is carried out with the application step of surface protection.
The present invention at least has advantages below：
1st, stabiliser bar after to clod wash for the present invention carries out suitable heat treatment, inwall oil spout, inner wall shot blasting and shotblasting reinforcement process, drastically increases the fatigue strength and hollow stabilizing rod of the hollow stabilizing rod service life under heavily stressed.Compared with the hollow stabilizing rod using conventional fabrication processes, its allowable stress can improve more than 20%, meets the technical requirements that stress levels are higher than 800MPa；
2nd, the service life being also significantly increased under high stress cycle load using the hollow stabilizing rod of manufacturing process manufacture of the present invention, can reduce the weight of hollow stabilizing rod further, reach the fully light-weighted purpose of automobile.
Brief description
Fig. 1 is manufacturing process flow schematic diagram according to an embodiment of the invention.
Fig. 2 is the schematic diagram of inner wall shot blasting process according to an embodiment of the invention.
Specific embodiment
The specific features performance of the present invention combines accompanying drawing by below example and further describes.
Refer to Fig. 1.A kind of manufacturing process of heavily stressed hollow stabilizing rod according to an embodiment of the invention, comprises the following steps：
A, qualified hollow metal tube raw material is cut into design length blanking step；
B, by angle pipe equipment by material clod wash become stablize club body formation stabiliser bar semi-finished product cold roll forming step；
The quenching Step that c, the stabiliser bar semi-finished product to cold roll forming are quenched；
D, the tempering step that the stabiliser bar semi-finished product after quenching are tempered in tempering furnace；
E, slightly repaiied cold sizing step to what the stabiliser bar semi-finished product after tempering slightly repaiied correction；
F, to the inner wall shot blasting step slightly repairing the stabiliser bar semi-finished product after cold sizing and carrying out internal wall shot-blasting strengthening；
G, the stabiliser bar semi-finished product after inner wall shot blasting are carried out with the inwall oil spout step of inwall oil spout process；
H, the two ends of stabiliser bar semi-finished product are carried out the end moulding step of end moulding；
I, the refine cold sizing step that the stabiliser bar finished product after end moulding is accurately revised；
J, stabiliser bar finished product outer surface is carried out with the ball blast step of Shot Blasting；
K, stabiliser bar surface is carried out with the application step of surface protection.
Further illustrate the characteristic performance of the present invention with reference to a kind of specific embodiment of heavily stressed hollow stabilizing rod of production：
Blanking step：Select qualified raw material, qualified hollow metal pipe is cut into single times of material of stabiliser bar by the model specification of stabiliser bar.For improving allowable stress and the fatigue life of stabiliser bar, from welding drawn tube, material is the material of similar 34MnB5 to the present embodiment.Material requirements surfaces externally and internally not damaged, inside pipe wall non-corroding.
Cold roll forming step：Using numerical control cold bending equipment, single times of material is processed into the shaft meeting dimensional requirement.Whether shaft size meets the requirements is checked by gauge.
Quenching Step：The stabiliser bar Quench heating of the present invention is carried out using electrified regulation mode, and between heating-up temperature is 910 ± 20 DEG C, heat time heating time is 30 ± 5 seconds, more preferably 910 DEG C, and heat time heating time is 30 seconds.It is placed on quenching fixture fixing after heating at once, is then placed in cooling in cooling bath, the temperature of cooling front stabilizer semi-finished product should be greater than 840 DEG C, and the effect of quenching fixture is the quenching distortion reducing pole；Quenching fixture and bar fixed pole shaft contact portion need to be designed to suitable shape and the material from thermostable heat-conductive difference, in order to avoid because the cooling of contact portion produces impact to the material structure of contact portion.The temperature of coolant should control between 20 DEG C～50 DEG C, and the concentration containing quenching liquid in coolant is 6.8～7.9.After quenching, the hardness of pole is more than 50HRC.
Tempering step：This step is one of committed step that heavily stressed stabiliser bar produces, and the stabiliser bar after quenching has temper brittleness at 300～400 DEG C.Keep certain toughness for ensureing material to have while sufficient intensity, temperature control performance between 260 DEG C～300 DEG C is optimal, temperature retention time is 50～80 minutes.It is highly preferred that temperature is 280 DEG C, the time is 1 hour.Time interval between above-mentioned tempering step and quenching Step should be less than 4 hours.After tempered, the tensile strength of stabiliser bar semi-finished product should be between 1500MPa～1700MPa.
Slightly repair cold sizing step：Using press device（Such as hydraulic press）Correction is slightly repaiied in the deformation that stabiliser bar semi-finished product are produced in quenching.
Inner wall shot blasting step：This step is to improve the committed step of heavily stressed stabiliser bar service life.The stress of hollow stabilizing rod outer wall is higher than inwall, but the raising with lightweight requirements, and the stress difference between inside and outside wall is less and less, the stress more and more higher of inwall, if not carrying out inner-wall reinforced, pole fatigue typically all originates from the heavily stressed position of inwall.By the shot-peening to the heavily stressed position of stabiliser bar inwall, the fatigue life of stabiliser bar can increase exponentially.Process through inner wall shot blasting, inside surface roughness Rt≤72.57 of stabiliser bar, surface compress residual stresses peak value is more than 300MPa.As shown in Fig. 2 shot blasting equipment for inner walls includes shower nozzle 91 and flexible pipe 92, pill 93 is transported in flexible pipe 92 process of inner wall shot blasting, and is ejected on the inwall of stabiliser bar 8 by the multiple spray orifices 911 on shower nozzle 91.
Inwall oil spout step：Because stabiliser bar inwall can not can carry out surface protection by application mode as outer wall, for improving the resistance to corrosion of inwall, for heavily stressed stabiliser bar, increased inwall oil spout protection.After oil spout, the oil film of inwall should reach 0.2mL, and covers uniformly.In oil spout, the atomizer of fuel injection equipment is directed at two terminations of automobile stabilizer bar, is sprayed with certain pressure and flow it is ensured that pole inwall has uniform oil film.
End moulding step：By way of sensing heating, end portion is heated to 950 DEG C ± 20 DEG C, using mould, fulling is carried out to termination after heating, after fulling, hydraulic test is punched out again.It is air cooled to room temperature after completing, finally the burr after molding and impression are polished.
Refine cold sizing step：Because end moulding can be deformed, so needing position stabiliser bar being deformed using press device to be modified, gauge is complied fully with the shape ensureing pole.
Ball blast step：Ball blast step is also to improve one of committed step of heavily stressed stabiliser bar fatigue life, there is enough and uniform residual stress for guarantee shaft surface, pole needs through positive and negative ball blast twice, and each ball blast time is 2～4 minutes, and ball blast strength control is in A type A Erman test piece camber 0.35～0.60.After ball blast, surface residual stress highest should reach more than 600MPa.
Application step：The surface protection of stabiliser bar includes phosphatization pre-treatment step, shaft powder spraying curing step and termination powder spraying curing step 3 step.Phosphatization pre-treatment step is used for carrying out alramenting to stabiliser bar surface.In shaft powder spraying curing step, first respectively two terminations of the stabiliser bar after phosphatization are covered with two isolation covers, carry out powder spray to stablizing club body surface, after completing powder spray, carry out surface heat cure to stablizing club body.In the powder spraying curing step of termination, first remove above-mentioned two isolation cover, powder spray is carried out to stabilizer bar end surface, after completing powder spray, stabilizer bar end is carried out with surface heat cure, specifically the stabiliser bar manipulator clamping completing shaft powder spraying curing is firmly sent into powder spraying chamber, carry out end portion and dust, after completing to dust, it is smoothly placed on carrier chain mechanical hand, sends into curing room and end portion is solidified, thus completing whole coating process.This application mode is isolated to end portion before shaft powder spraying curing, after completing shaft powder spraying curing, again stabilizer bar end is individually dusted and solidified, stabiliser bar after in existing process to bonderizing integrally carries out compared with the technique of powder spraying curing simultaneously, ensure that the layer thickness of end portion is strict controlled in the range of 20 μm～80 μm, reduce rework rate.Stabiliser bar finished product after application, the layer thickness of its shaft is 60 μm～150 μm, and the layer thickness of two ends termination is 20 μm～80 μm, and surface should be bright and clean, no Pericarpium Citri Reticulatae, accumulation, exposed phenomenon.
Claims (7)
1. a kind of manufacturing process of heavily stressed hollow stabilizing rod is it is characterised in that comprise the following steps：
A, qualified hollow metal tube raw material is cut into design length blanking step；
B, by angle pipe equipment by material clod wash become stablize club body formation stabiliser bar semi-finished product cold roll forming step；
The quenching Step that c, the stabiliser bar semi-finished product to cold roll forming are quenched；
D, the tempering step that the stabiliser bar semi-finished product after quenching are tempered in tempering furnace；
E, slightly repaiied cold sizing step to what the stabiliser bar semi-finished product after tempering slightly repaiied correction；
F, to the inner wall shot blasting step slightly repairing the stabiliser bar semi-finished product after cold sizing and carrying out internal wall shot-blasting strengthening；
G, the stabiliser bar semi-finished product after inner wall shot blasting are carried out with the inwall oil spout step of inwall oil spout process；
H, the two ends of stabiliser bar semi-finished product are carried out the end moulding step of end moulding；
I, the refine cold sizing step that the stabiliser bar finished product after end moulding is accurately revised；
J, stabiliser bar finished product outer surface is carried out with the ball blast step of Shot Blasting；
K, stabiliser bar surface is carried out with the application step of surface protection.
2. a kind of manufacturing process of heavily stressed hollow stabilizing rod according to claim 1 is it is characterised in that described quenching Step is by the shaft energising of stabiliser bar, after being heated to 910 ± 20 DEG C, using water hardening.
3. it is characterised in that the temperature of described tempering step is between 260 DEG C～300 DEG C, temperature retention time is 50～80 minutes to a kind of manufacturing process of heavily stressed hollow stabilizing rod according to claim 1.
4. the manufacturing process of a kind of heavily stressed hollow stabilizing rod according to claim 1, it is characterized in that, described end moulding step is the shape that the stabilizer bar end after heating is washed into requirement using hydraulic test, then air cooling, and the heating-up temperature of stabilizer bar end is 950 DEG C ± 20 DEG C.
5. the manufacturing process of a kind of heavily stressed hollow stabilizing rod according to claim 1, it is characterized in that, described ball blast step includes the positive and negative ball blast twice of stabiliser bar, and each ball blast time is 2～4 minutes, and ball blast strength control is in A type A Erman test piece camber 0.35～0.60.
6. a kind of manufacturing process of heavily stressed hollow stabilizing rod according to claim 1 is it is characterised in that described application step further includes：
Phosphatization pre-treatment step, for carrying out alramenting to stabiliser bar surface；
Two terminations of the stabiliser bar after phosphatization are covered with two isolation covers, carry out powder spray to stablizing club body surface by shaft powder spraying curing step respectively, carry out surface heat cure to stablizing club body after completing powder spray；
Termination powder spraying curing step, removes described two isolation covers, carries out powder spray to stabilizer bar end surface, carries out surface heat cure to stabilizer bar end after completing powder spray.
7. it is characterised in that the layer thickness of described stabiliser bar finished product shaft is 60 μm～150 μm, the layer thickness of two ends termination is 20 μm～80 μm to a kind of manufacturing process of heavily stressed hollow stabilizing rod according to claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510538713.8A CN106475740A (en) | 2015-08-28 | 2015-08-28 | A kind of manufacturing process of heavily stressed hollow stabilizing rod |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510538713.8A CN106475740A (en) | 2015-08-28 | 2015-08-28 | A kind of manufacturing process of heavily stressed hollow stabilizing rod |
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| CN106475740A true CN106475740A (en) | 2017-03-08 |
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| CN201510538713.8A Pending CN106475740A (en) | 2015-08-28 | 2015-08-28 | A kind of manufacturing process of heavily stressed hollow stabilizing rod |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109648256A (en) * | 2018-11-29 | 2019-04-19 | 扬州东升汽车零部件股份有限公司 | A kind of manufacturing process of high intensity hollow stabilizing rod |
| CN109722503A (en) * | 2017-10-27 | 2019-05-07 | 上海中国弹簧制造有限公司 | The processing technology of hollow stabilizing rod end |
| CN109718957A (en) * | 2018-11-30 | 2019-05-07 | 天津市大港汽车配件弹簧厂 | The virtual hanging point coating process of automobile stabilizer bar |
| CN109722519A (en) * | 2018-11-30 | 2019-05-07 | 天津市大港汽车配件弹簧厂 | Automobile stabilizer bar heat treatment process of the hardness in the range of HRC45.3 ~ 49.1 |
| CN110438320A (en) * | 2019-08-30 | 2019-11-12 | 成都蒂森克虏伯富奥弹簧有限公司 | Hollow stabilizer rod of automobile embathes production method |
| CN111663020A (en) * | 2020-05-26 | 2020-09-15 | 浙江美力汽车弹簧有限公司 | Method for improving fatigue strength of stabilizer bar through internal and external hardness grading |
| CN113070821A (en) * | 2021-04-30 | 2021-07-06 | 广州华德汽车弹簧有限公司 | Method for prolonging fatigue life of hollow stabilizer bar product |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109722503A (en) * | 2017-10-27 | 2019-05-07 | 上海中国弹簧制造有限公司 | The processing technology of hollow stabilizing rod end |
| CN109648256A (en) * | 2018-11-29 | 2019-04-19 | 扬州东升汽车零部件股份有限公司 | A kind of manufacturing process of high intensity hollow stabilizing rod |
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| CN109718957A (en) * | 2018-11-30 | 2019-05-07 | 天津市大港汽车配件弹簧厂 | The virtual hanging point coating process of automobile stabilizer bar |
| CN109722519A (en) * | 2018-11-30 | 2019-05-07 | 天津市大港汽车配件弹簧厂 | Automobile stabilizer bar heat treatment process of the hardness in the range of HRC45.3 ~ 49.1 |
| CN110438320A (en) * | 2019-08-30 | 2019-11-12 | 成都蒂森克虏伯富奥弹簧有限公司 | Hollow stabilizer rod of automobile embathes production method |
| CN111663020A (en) * | 2020-05-26 | 2020-09-15 | 浙江美力汽车弹簧有限公司 | Method for improving fatigue strength of stabilizer bar through internal and external hardness grading |
| CN113070821A (en) * | 2021-04-30 | 2021-07-06 | 广州华德汽车弹簧有限公司 | Method for prolonging fatigue life of hollow stabilizer bar product |
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Application publication date: 20170308 |