CN107309605A - The antifatigue processing technology of metal parts, torsion beam processing method and torsion beam - Google Patents
The antifatigue processing technology of metal parts, torsion beam processing method and torsion beam Download PDFInfo
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- CN107309605A CN107309605A CN201610971227.XA CN201610971227A CN107309605A CN 107309605 A CN107309605 A CN 107309605A CN 201610971227 A CN201610971227 A CN 201610971227A CN 107309605 A CN107309605 A CN 107309605A
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- metal parts
- torsion beam
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- heating
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Classifications
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- 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
- B60G21/051—Trailing arm twist beam axles
-
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
It is an object of the invention to provide a kind of antifatigue processing technology of metal parts, torsion beam processing method and torsion beam.The antifatigue processing technology of metal parts can effectively improve the tired service life of part.Torsion beam processing method can produce the torsion beam with higher tired service life.Torsion beam has higher tired service life.The antifatigue processing technology of metal parts includes：A. metal parts is heated in heating furnace；B. the temperature in heating furnace is maintained between 560 DEG C to 620 DEG C, heating and thermal insulation processing is carried out to metal parts, the duration of heating and thermal insulation processing is 46 minutes to 60 minutes；C. stove cold treatment is carried out to metal parts in heating furnace, the duration of stove cold treatment is 30 minutes to 40 minutes；D. air cooling processing is carried out to metal parts.
Description
Technical field
The present invention relates to automobile manufacturing field, more particularly, to a kind of antifatigue processing technology of metal parts, torsion beam
Processing method and torsion beam.
Background technology
In automobile manufacturing field, automobile chassis include it is multiple influenceed larger part by fatigue, such as torsion beam and hang
Boom.By taking torsion beam as an example, its usual manufacturing process is：Sheet material --- tubulation --- is molded.Torsion beam after shaping is in shaping
There is quick-hardening phenomenon, quick-hardening can further improve the intensity of torsion beam initial stage.Torsion beam after shaping, it is bent
Take strength ratio tubing and improve 100MPa or so, but also increase substantial amounts of dislocation density simultaneously, so as to be caused in torsion beam
Bigger residual stress, seriously reduces the fatigue life of torsion beam.
This area needs a kind of antifatigue processing technology of metal parts, to improve the tired service life of part.
The content of the invention
It is an object of the invention to provide a kind of antifatigue processing technology of metal parts, the antifatigue processing of the metal parts
Technique can effectively improve the tired service life of part.
The present invention also aims to provide a kind of torsion beam processing method, the torsion beam processing method can be produced
Torsion beam with higher tired service life.
The present invention also aims to provide a kind of torsion beam, the torsion beam has higher tired service life.
For the antifatigue processing technology of metal parts for realizing the purpose, for the metal after punch forming is handled
Part is handled, and the antifatigue processing technology of metal parts includes：
A. the metal parts is heated in heating furnace；
B. the temperature in the heating furnace is maintained between 560 DEG C to 620 DEG C, heating guarantor is carried out to the metal parts
Temperature processing, the duration of the heating and thermal insulation processing is 46 minutes to 60 minutes；
C. stove cold treatment is carried out to the metal parts in the heating furnace, the duration of the stove cold treatment is 30
Minute was to 40 minutes；
D. air cooling processing is carried out to the metal parts.
The antifatigue processing technology of described metal parts, its further feature is that the heating furnace is continuous oven, described
Continuous oven includes bringing-up section, heating and thermal insulation section and cold section of stove, and the metal parts sequentially passes through the bringing-up section, the heating and protected
Temperature section and cold section of the stove；
The bringing-up section is used to heat the metal parts；
The heating and thermal insulation section is used to receive the metal parts for coming from the bringing-up section, and to the metal parts
Heating and thermal insulation processing is carried out, the temperature of the heating and thermal insulation section is maintained between 560 DEG C to 620 DEG C, the heating and thermal insulation processing
Duration be 46 minutes to 60 minutes；
Cold section of the stove is used to receive the metal parts for coming from the heating and thermal insulation section, and to the metal parts
Stove cold treatment is carried out, the duration of the stove cold treatment is 30 minutes to 40 minutes.
The antifatigue processing technology of described metal parts, its further feature is that the continuous oven also includes air cooling section,
The air cooling section is used to receive the metal parts for coming from cold section of the stove, and the metal parts is carried out at air cooling
Reason.
The antifatigue processing technology of described metal parts, its further feature is that the length of the heating and thermal insulation section is
12 meters, the length of cold section of the stove is 8 meters.
The antifatigue processing technology of described metal parts, its further feature is that the material of the metal parts includes
Bainitic steel, the bainitic steel includes model FB590 Steel material.
To realize the torsion beam processing method of the purpose, for processing torsion beam, the torsion beam processing method includes：
A. the raw material metal sheet material of the torsion beam is pre-processed, the pretreatment is included to the metal former material
Flitch material is cut, sandblasting；
B. tubulation processing is carried out to the raw material metal sheet material after pretreatment, tubulation processing includes pair
The raw material metal sheet material after pretreatment carries out flexural deformation, to form the main part of the torsion beam
Point；
C. the main part to the torsion beam carries out punch forming processing, to form the torsion beam；
D. using the antifatigue processing technology of metal parts as described above to the torsion after punch forming is handled
Beam is handled.
To realize the torsion beam of the purpose, the torsion beam is manufactured by torsion beam processing method as described above.
The positive effect of the present invention is：The antifatigue processing technology of metal parts that the present invention is provided, for warp
The metal parts crossed after punch forming processing is handled, and the technique can make the excessive sky caused in part punching forming process
Position is reduced, and enables the Dislocation strain of part, internal stress reduction.Meanwhile, the antifatigue processing technology of the metal parts can also be released
The strain energy of amplification quantity, makes irregular dislocation redistribution on the slide surface of metal parts, is arranged vertically into wall；The present invention is carried
In the case that the antifatigue processing technology of metal parts of confession make it that the hardness and intensity of metal parts are not decreased obviously, improve
Its service life.
Brief description of the drawings
The above and other features of the present invention, property and advantage will pass through retouching with reference to the accompanying drawings and examples
State and become readily apparent from, wherein：
Fig. 1 is the schematic diagram of V-type opening torsion beam；
Fig. 2 is the schematic diagram in section in the middle part of V-type opening torsion beam；
Fig. 3 is the schematic diagram of the V-structure torsion beam of totally-enclosed dependent formula；
Fig. 4 is the step schematic diagram of the antifatigue processing technology of metal parts in the present invention.
Embodiment
With reference to specific embodiments and the drawings, the invention will be further described, elaborates in the following description more
Details to facilitate a thorough understanding of the present invention, still the present invention obviously can come real with a variety of other manners different from this description
Apply, those skilled in the art can in the case of without prejudice to intension of the present invention according to practical situations make it is similar promote, drill
Unravel silk, therefore should not be limited the scope of the invention with the content of this specific embodiment.
It should be noted that Fig. 1 to Fig. 4 is only as an example, it is drawn according to the condition of equal proportion, and
It should not be construed as limiting in this, as the protection domain to actual requirement of the present invention.
As shown in figure 4, the antifatigue processing technology of metal parts, for entering to the metal parts after punch forming is handled
Row processing, it is characterised in that the antifatigue processing technology of metal parts includes：
A. metal parts is heated in heating furnace；
B. the temperature in heating furnace is maintained between 560 DEG C to 620 DEG C, heating and thermal insulation processing carried out to metal parts,
The duration of heating and thermal insulation processing is 46 minutes to 60 minutes；
C. stove cold treatment is carried out to metal parts in heating furnace, the duration of stove cold treatment is 30 minutes to 40 points
Clock；
D. air cooling processing is carried out to metal parts.
Metal parts includes a variety of torsion beam and suspension link influenceed by fatigue on larger part, such as automobile chassis.With
Include bainitic steel in the material of manufacture metal parts, bainitic steel includes model FB590 Steel material, in addition to FB780,
The high-strength Steel material such as QSTE420, QSTE340.For the metal parts that some are made up of low-alloy steel, such as HR340 and HR440,
The antifatigue processing technology of metal parts that the present invention is provided can also play the effect for improving metal parts fatigue life.Model
FB590 Steel material has lightweight feature, can meet the light-weighted requirement of part.
The institutional framework of bainitic steel is that ferrite (quasi- polygon crystal grain) adds a small amount of pearlite, and it is brilliant in pearlite
A small amount of bainite in also disperse in boundary, and the content of bainite is between 15%-20%, and wherein ferrite provides high tenacity and is easy to
The punch forming of part, and the bainite of disperse provides high intensity to improve the rigidity requirement of part on pearlite crystal boundary.Shellfish
Family name's body steel has good mouldability, but there is this material an outstanding feature initial stage there is quick-hardening to show in punch forming
As further improving the intensity of material by quick-hardening.Part yield strength ratio tubing after punch forming is improved
100MPa or so, while also increasing substantial amounts of dislocation density, so as to cause bigger residual stress, seriously reduces part
Fatigue life.
The antifatigue processing technology of metal parts that the present invention is provided, for the metal parts after punch forming is handled
Handled, the technique can reduce the excess vacancy that is caused during forming parts, and enable part Dislocation strain,
Internal stress is reduced.Meanwhile, the antifatigue processing technology of the metal parts can also discharge substantial amounts of strain energy, make the sliding of metal parts
Irregular dislocation redistribution, is arranged vertically into wall on face；The antifatigue processing technology of metal parts that the present invention is provided causes
In the case that the hardness and intensity of metal parts are not decreased obviously, its service life is improved.
In the present invention, heating furnace can be car type furnace or shaft furnace, when being produced in batches using this technique, can also
Heating furnace is used as from continuous oven.In one embodiment of the invention, from protective atmosphere anaerobic annealing furnace (NON-
OXYGENOUS ANNEALER) it is used as continuous oven.During from continuous oven as heating furnace, step a-d can be made uninterruptedly to carry out.
Continuous oven includes bringing-up section, heating and thermal insulation section and cold section of stove, and metal parts sequentially passes through bringing-up section, heating and thermal insulation section
With cold section of stove；Transport mechanism is provided with continuous oven, transmission mechanism is used to metal parts being sequentially delivered to bringing-up section, heating guarantor
Temperature section and cold section of stove.
Bringing-up section is used to heat metal parts；The mode of heating generally uses electrical heating, electrically heated side
Formula is easily achieved the control to in-furnace temperature.
Heating and thermal insulation section is used to receive the metal parts for coming from bringing-up section, and metal parts is carried out at heating and thermal insulation
Reason, the temperature of heating and thermal insulation section is maintained between 560 DEG C to 620 DEG C, and the duration of heating and thermal insulation processing is 46 minutes to 60
Minute；
Cold section of stove is used to receive the metal parts for coming from heating and thermal insulation section, and carries out stove cold treatment, stove to metal parts
The duration of cold treatment is 30 minutes to 40 minutes；Stove cold treatment refers in the energy source of cut-out continuous oven or heating furnace
Afterwards, metal parts is made to carry out the process of natural cooling in stove.
The length of heating and thermal insulation section is 12 meters, and the length that cold section of stove is 8 meters, the speed that metal parts is advanced in continuous oven
20-26cm/min is set to, to meet the requirement of above-mentioned heat time.The size and metal parts of continuous oven are in continuous oven
The speed of traveling can be adjusted according to actual conditions, using meet the time requirement of the processing of above-mentioned heating and thermal insulation and stove cold treatment as
It is accurate.Transverse axis represents the distance that metal parts is advanced in continuous oven in Fig. 4, and what the longitudinal axis was represented is the temperature in heating furnace.Step b
Corresponding temperature is between 560 DEG C to 620 DEG C.
Continuous oven also includes air cooling section, and air cooling section is used to receive the metal parts for coming from cold section of stove, and to metal parts
Carry out air cooling processing.
The antifatigue processing technology of metal parts that the present invention is provided may apply in torsion beam processing method, and torsion beam adds
Work method includes：
A. the raw material metal sheet material of torsion beam is pre-processed, pretreatment includes entering the raw material metal sheet material
Row cutting, sandblasting；
B. tubulation processing is carried out to the raw material metal sheet material after pretreatment, tubulation processing is included to passing through pre- place
Raw material metal sheet material after reason carries out flexural deformation, to form the main part of torsion beam；
C. the main part to torsion beam carries out punch forming processing, to form torsion beam；
D. using the antifatigue processing technology of metal parts as described above to the torsion after punch forming is handled
Beam is handled.
Step A has many sub-steps, including sheet material is cut, the step such as sandblasting, these sub-steps belong to this
The common knowledge in field, is not described excessively herein.The purpose pre-processed to the raw material metal sheet material of torsion beam is to make plate
The size and surface appearance of material are processed into suitable tubulation processing.
Step B also has many sub-steps, the step of including flexural deformation is carried out to sheet material, the step of flexural deformation
Belong to the common knowledge of this area, do not describe excessively herein.The mesh of tubulation processing is carried out to the raw material metal sheet material of torsion beam
Be the torsion beam for making sheet material bend to as shown in Figure 1, 2, 3 main part.Wherein, the main part of torsion beam is included as schemed
1st, the main part of the V-type opening torsion beam 100 shown in 2, includes the V-structure of totally-enclosed dependent formula as shown in Figure 3
The main part of torsion beam 200.
Step C is punch steps, including carries out the steps such as local compression shaping, punching to the main part of torsion beam, this
A little step belongs to the common knowledge of this area, does not describe excessively herein.Punching press is entered to the raw material metal sheet material of torsion beam
The purpose of forming processes is such as two ends of torsion beam in the main part of torsion beam, forms specific structure, with other zero
Part is connected, so as to realize the function of torsion beam.
The torsion beam formed after above-mentioned A, B, step C, its internal structure has more excess vacancy and dislocation,
And with more residual stress, cause the fatigue life of torsion beam shorter.Using step D to the torsion after punch forming
Beam proceeds processing, can eliminate excess vacancy and dislocation, so as to reduce the residual stress occurred in forming process, improves and turns round
Turn the fatigue life of beam.
The present invention has carried out fatigue test to the part by the antifatigue processing technology processing of metal parts, fatigue test
As a result it is as shown in the table：
The fatigue test proof list of table 1.
As shown in table 1, scheme one is the control group of fatigue test, and its fatigue life is only 3.4 ten thousand times, scheme two, three, four
For the test group handled using the antifatigue processing technology of metal parts, the fatigue life of the part of test group is relative to control
Group has large increase.
The positive effect of the present invention is：The antifatigue processing technology of metal parts that the present invention is provided, for warp
Metal parts after overmolding processing is handled, and the technique can reduce the excess vacancy caused during forming parts,
And enable the Dislocation strain of part, internal stress reduction.Meanwhile, the antifatigue processing technology of the metal parts can also discharge substantial amounts of
Strain energy, makes irregular dislocation redistribution on the slide surface of metal parts, is arranged vertically into wall；The metal that the present invention is provided
In the case that the antifatigue processing technology of part make it that the hardness and intensity of metal parts are not decreased obviously, improve it and use the longevity
Life.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area skill
Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification, every without departing from this hair
The content of bright technical scheme, any modification that the technical spirit according to the present invention is made to above example, equivalent variations and is repaiied
Decorations, each fall within the protection domain that the claims in the present invention are defined.
Claims (7)
1. a kind of antifatigue processing technology of metal parts, for handling the metal parts after punch forming is handled,
Characterized in that, the antifatigue processing technology of metal parts includes：
A. the metal parts is heated in heating furnace；
B. the temperature in the heating furnace is maintained between 560 DEG C to 620 DEG C, the metal parts is carried out at heating and thermal insulation
Reason, the duration of the heating and thermal insulation processing is 46 minutes to 60 minutes；
C. stove cold treatment is carried out to the metal parts in the heating furnace, the duration of the stove cold treatment is 30 minutes
To 40 minutes；
D. air cooling processing is carried out to the metal parts.
2. the antifatigue processing technology of metal parts as claimed in claim 1, it is characterised in that the heating furnace is continuous oven,
The continuous oven include bringing-up section, heating and thermal insulation section and cold section of stove, the metal parts sequentially pass through the bringing-up section, it is described plus
Hot soaking zone and cold section of the stove；
The bringing-up section is used to heat the metal parts；
The heating and thermal insulation section is used to receive the metal parts for coming from the bringing-up section, and the metal parts is carried out
Heating and thermal insulation processing, the temperature of the heating and thermal insulation section is maintained between 560 DEG C to 620 DEG C, and what the heating and thermal insulation was handled holds
The continuous time is 46 minutes to 60 minutes；
Cold section of the stove is used to receive the metal parts for coming from the heating and thermal insulation section, and the metal parts is carried out
Stove cold treatment, the duration of the stove cold treatment is 30 minutes to 40 minutes.
3. the antifatigue processing technology of metal parts as claimed in claim 2, it is characterised in that the continuous oven also includes air cooling
Section, the air cooling section is used to receive the metal parts for coming from cold section of the stove, and carries out air cooling to the metal parts
Processing.
4. the antifatigue processing technology of metal parts as claimed in claim 2 or claim 3, it is characterised in that the heating and thermal insulation section
Length is 12 meters, and the length of cold section of the stove is 8 meters.
5. the antifatigue processing technology of metal parts as claimed in claim 1, it is characterised in that the material bag of the metal parts
Bainitic steel is included, the bainitic steel includes model FB590 Steel material.
6. a kind of torsion beam processing method, for processing torsion beam, it is characterised in that the torsion beam processing method includes：
A. the raw material metal sheet material of the torsion beam is pre-processed, the pretreatment is included to the raw material metal plate
Material is cut, sandblasting；
B. tubulation processing is carried out to the raw material metal sheet material after pretreatment, the tubulation processing is included to described
The raw material metal sheet material after pretreatment carries out flexural deformation, to form the main part of the torsion beam；
C. the main part to the torsion beam carries out punch forming processing, to form the torsion beam；
D. using the antifatigue processing technology of metal parts as described in any one claim in claim 1 to 5 to passing through
The torsion beam after punch forming processing is handled.
7. a kind of torsion beam, it is characterised in that the torsion beam is made by torsion beam processing method as claimed in claim 6
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610971227.XA CN107309605A (en) | 2016-11-01 | 2016-11-01 | The antifatigue processing technology of metal parts, torsion beam processing method and torsion beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610971227.XA CN107309605A (en) | 2016-11-01 | 2016-11-01 | The antifatigue processing technology of metal parts, torsion beam processing method and torsion beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107309605A true CN107309605A (en) | 2017-11-03 |
Family
ID=60184685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610971227.XA Pending CN107309605A (en) | 2016-11-01 | 2016-11-01 | The antifatigue processing technology of metal parts, torsion beam processing method and torsion beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107309605A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108441616A (en) * | 2018-04-19 | 2018-08-24 | 吉林省正轩车架有限公司 | Cold forming high strength steel car Rear secondary frame for vehicle torsion beam discharges stress heat-treatment method |
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| CN105861804A (en) * | 2016-06-04 | 2016-08-17 | 马鞍山钢铁股份有限公司 | Heat treatment method for railway vehicle axle subjected to full annealing in advance |
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| JP2004322913A (en) * | 2003-04-25 | 2004-11-18 | Futaba Industrial Co Ltd | Torsion beam type suspension |
| US20110037207A1 (en) * | 2009-08-11 | 2011-02-17 | Donghee Industrial Co., Ltd. | Hybrid method manufacturing apparatus for torsion beam |
| CN102329941A (en) * | 2011-09-13 | 2012-01-25 | 龙工（上海）桥箱有限公司 | Method for manufacturing return disc of variable plunger pump |
| CN104651574A (en) * | 2014-05-23 | 2015-05-27 | 上海汇众汽车制造有限公司 | High-strength part forming process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108441616A (en) * | 2018-04-19 | 2018-08-24 | 吉林省正轩车架有限公司 | Cold forming high strength steel car Rear secondary frame for vehicle torsion beam discharges stress heat-treatment method |
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