CN108441604B - A kind of auto parts and components part intensity adjustable design method - Google Patents
A kind of auto parts and components part intensity adjustable design method Download PDFInfo
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- CN108441604B CN108441604B CN201810067094.2A CN201810067094A CN108441604B CN 108441604 B CN108441604 B CN 108441604B CN 201810067094 A CN201810067094 A CN 201810067094A CN 108441604 B CN108441604 B CN 108441604B
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- components
- intensity adjustable
- seamed edge
- collision course
- circle
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- 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
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
-
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D11/00—Process control or regulation for heat treatments
-
- 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
-
- 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
- C21D2221/00—Treating localised areas of an article
- C21D2221/02—Edge parts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Transportation (AREA)
- Combustion & Propulsion (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Articles (AREA)
- Body Structure For Vehicles (AREA)
Abstract
A kind of auto parts and components part intensity adjustable design method is the following steps are included: step 1: determine components by collision course, calculate components perpendicular to the cross section equivalent width, material thickness, base material yield strength by collision course；Step 2: judge whether to have on components with by the vertical seamed edge of collision course, and if it exists, laser quenching then is carried out to seamed edge；Step 3: if having on components with by the parallel seamed edge of collision course, it then selects to strengthen seamed edge or 360 degree of laser quenchings is carried out to components along with by the vertical cross section of collision course, intensity adjustable circle is formed, multiple changes are strengthened circle and are distributed on components；Step 4: whole tempering heat treatment is carried out to components.The elastic-plastic buckling deformation of induction components may be implemented in this method, takes into account the energy-absorbing level and anti-unstability ability for promoting components, becomes whole evagination deformations from " indent evagination " cyclomorphosis mode, so that axial conquassation plastic deformation is more stable.
Description
Technical field
The present invention relates to Field of Heat-treatment more particularly to a kind of auto parts and components part intensity adjustable design methods.
Background technique
Generally it is believed that vehicle body is dangerous safely, important is that vehicle body is securely insecure, and steel plate thickness is thicker, also more
Safety.But modern car design is not exactly to consider in this way, and designer is from the angle of mechanics study, the place of the softness
With regard to softness, the firm place is just firm, according to different force-bearing situations, part car body is allowed to play energy-absorbing dispersion in collision
Effect, weakens the impact force of vehicle body as far as possible, multiplies personnel safety to reach protection to the maximum extent and drive.In Global Auto manufacturer
Under conditions of lightweight vehicle body should be pursued, while guaranteeing the firmness degree of crew module, reduces injury of the impact force to occupant, vehicle
The Intensity Design of body structure is very crucial.Crash-worthiness vehicle body can pass through the energy-absorbing area buffering percussive force of front and back in car crass
Intensity, while sufficient living space is provided for occupant with the driver cabin of high rigidity.
The prior art is mainly improved from material and body structure, wherein material to meet above-mentioned needs as far as possible
Aspect is mainly zinc-plated or almag or polymer composite, they successively using also gradually becoming high-intensitive vehicle
Selective use is carried out on structural level, but can not keep away further according to vehicle body different location and corresponding load working condition with material
What is exempted from is to improve intensity again to reduce car body weight, and light improves necessarily raising automobile manufacture cost in terms of material.
Therefore the prior art lacks to existing versatility, inexpensive steel, improves its existing intensity by auxiliary process
Effective ways.It especially can be according to the elastic-plastic deformation mechanism of auto parts and components, in conjunction with automobile body part in car crass
Bearing load and the different of energy-absorbing in the process needs, and local intensity adjustable technology urgently needs to occur.
Summary of the invention
The technical problem to be solved by the present invention is in addition to changing material, it is existing to vapour in the case where not increasing weight
In the reinforcement technique of vehicle vehicle body parts, cannot according to the load working conditions of components and energy-absorbing need that its is arranged it is adaptable
The problem of local strength.
In order to solve the above-mentioned technical problem, a kind of work for auto parts and components part intensity adjustable design method that the present invention designs
Skill the following steps are included:
Step 1: determine components by collision course, calculate components perpendicular to the equivalent width in cross section by collision course
Degree, material thickness, base material yield strength；
Step 2: judge whether to have on components with by the vertical seamed edge of collision course, and if it exists, then seamed edge is swashed
Photoquenching；
Step 3: if having on components with by the parallel seamed edge of collision course, selection seamed edge is strengthened or along with touched
It hits the vertical cross section in direction and 360 degree of laser quenchings is carried out to components, form intensity adjustable circle, multiple changes are strengthened between circle
Every being distributed on components；
Step 4: whole tempering heat treatment is carried out to components.
As a kind of preferred: the interval width between intensity adjustable circleIn formula: d is to strengthen spacing, and h is side
Thickness of pipe wall, c are cross section equivalent width described in step 2.
As a kind of preferred: the laser quenching width p of intensity adjustable circle are as follows: p=d/4.
As a kind of preferred: the relationship between the quantity and consecutive mean crushing force of intensity adjustable circle is:
In formula:For the reinforcing of intensity adjustable border
The consecutive mean crushing force of square tube, Y are original base material yield strength, v0To impact initial velocity, c is cross described in step 2
Section equivalent width, n are the number of intensity adjustable circle.
As a kind of preferred: the circular arc width quenched in step 2 to seamed edge meets formula:
As a kind of preferred: if the length L of components is greater than 2 times of cross section equivalent width c, in the end of components
Quenched with by the parallel linear laser of collision course.
As a kind of preferred: the length of the quenching line segment of linear laser quenching is greater than the equivalent width in cross section of 1 components
C is spent, and quenches the end that line segment is evenly distributed in components.
As a kind of preferred: before step 4 carries out whole tempering heat treatment to components, in being collided for auto parts and components
Through-hole groove is provided on the steel surface at end, the through-hole groove is that one or more is uniformly distributed, for inducing stress and deformation
Start.
The invention has the advantages that:
1, deformation pattern changes.Intensity adjustable, which strengthens circle, can change the plastic deformation modes of components flat part, induction zero
The elastic-plastic buckling of component deforms, and the energy-absorbing level and anti-unstability ability of components is promoted, by " indent evagination " cyclomorphosis mould
Formula becomes whole evagination deformations, so that axial conquassation plastic deformation is more stable.
2, when to the quenching of components, it is contemplated that components by collision course, calculate components perpendicular to being collided
The factors such as the cross section equivalent width in direction, material thickness, base material yield strength realize the design of auto parts and components part intensity adjustable
Can improve existing versatility, lower cost materials, different shape components local stiffening effect.
3, by actual experiment verifying analysis shows: this method may make part to become the components crushing force that is averaged strengthened and mention
Height, and the double requirements of impact force and energy-absorbing can have been taken into account.
Detailed description of the invention
Attached drawing 1: the Box Section strengthened using the seamed edge of the method for the present invention.
Attached drawing 2: the square tube strengthened using the intensity adjustable circle of the method for the present invention.
Attached drawing 3: original square tube and the square tube of intensity adjustable circle reinforcing are in the comparison that axially conquassation is plastically deformed.
Attached drawing 4: it is compared using the dynamic axial impact conquassation force curve under the method for the present invention.
Specific embodiment
A kind of technique of auto parts and components part intensity adjustable design method the following steps are included:
Step 1: determine components by collision course, calculate components perpendicular to the equivalent width in cross section by collision course
Degree, material thickness, base material yield strength；
Step 2: judge whether to have on components with by the vertical seamed edge of collision course, and if it exists, then seamed edge is swashed
Photoquenching；The circular arc width quenched as shown in Figure 1 to seamed edge meets formula:I.e. according to the formula, so that
Circular arc width when seamed edge quenches can take into account cross section the equivalent width c and steel plate thickness h of components.This is to realize strip
Components can be improved its intensity when receiving lateral impact, such as applied in the ABC column of body of a motor car, can be effective
When improving vehicle by side impact, the shock resistance protecting effect of vehicle body, personnel safety in maintenance cart are improved.
Step 3: if having on components with by the parallel seamed edge of collision course, selection seamed edge is strengthened or along with touched
It hits the vertical cross section in direction and 360 degree of laser quenchings is carried out to components, form intensity adjustable circle, multiple changes are strengthened between circle
Every being distributed on components；
Interval width between intensity adjustable circleIn formula: d is to strengthen spacing, and h is square tube wall thickness, and c is step
Rapid 1
Described in cross section equivalent width.The laser quenching width p of intensity adjustable circle are as follows: p=d/4.
Relationship between the quantity and consecutive mean crushing force of intensity adjustable circle is:
In formula:For the reinforcing of intensity adjustable border
The consecutive mean crushing force of square tube, Y are original base material yield strength, v0To impact initial velocity, c is cross described in step 2
Section equivalent width, n are the number of intensity adjustable circle.
As shown in Figure 2: square tube essential information used in a kind of auto parts and components: equivalent width c is 56.4mm, thickness h
For 2.0mm, it is 4 by the quantity that intensity adjustable circle is calculated in formula that length L, which is 220mm,.
If the length L of further components is greater than 2 times of cross section equivalent width c, carried out in the end of components
It is quenched with by the parallel linear laser of collision course.The length of the quenching line segment of linear laser quenching is greater than the cross of 1 components
Section equivalent width c, and quench the end that line segment is evenly distributed in components.It plays a supporting role, to prevent root to be first crushed.
It is as shown in Figure 2: since the length L of the auto parts and components is greater than 2 times of cross section equivalent width c, so in square tube
End quench with by the parallel linear laser of collision course, due to precisely the presence of four seamed edges, so quenching line segment can be with
Four seamed edges are strengthened in selection, that is, realize the end that quenching line segment is evenly distributed in components.It is strong by the change of laser treatment
The yield strength of the quenching line segment 2 of the linear laser quenching of the end of degree circle 1 and components promotes nearly 4 times.
In addition as shown in Figure 2: it is provided with through-hole groove 3 on steel surface of the auto parts and components by collision end, in embodiment,
Since the auto parts and components are square tubes, thus selection through-hole groove be it is multiple be evenly distributed on by collision end steel surface on, use
In induction stress and deformation.
Final step 4: whole tempering heat treatment is carried out to components.Complete the design of components part intensity adjustable.Such as Fig. 3 institute
Show: the 50km/h dynamic axial Impact Simulation Comparative result through 150kg impact body, it is known that compared with original square tube, intensity adjustable week
The advantage that circle strengthens square tube mainly has two o'clock:
1, deformation pattern changes.Intensity adjustable, which strengthens circle, can change the plastic deformation modes of raw plates, by " outside indent
It is convex " cyclomorphosis mode becomes whole evagination deformations, so that axial conquassation plastic deformation is more stable.
2, average crushing force improves, and enhances about 38.9% than original square tube.Such as crushing force curve comparison in Fig. 4 it is found that
Solid black lines are: intensity adjustable square tube, black dotted lines are: original square tube.The crushing force of intensity adjustable square tube is always maintained at higher level
Cyclic swing, and original square tube in addition in first folding unit forming process crushing force and intensity adjustable square tube it is almost consistent,
It is whole later that downward trend is presented, until reaching stable conquassation state.Wherein original square tube mean pressure bursts power as 72.0kN, becomes strong
Spending square tube is 100.0kN energy absorbing efficiency enhancing simultaneously, therefore intensity adjustable design can take into account the double requirements of impact force and energy-absorbing.
It can be seen that the auto parts and components plastic deformation of induction core carrying may be implemented in intensity adjustable design, touching it
Better occupant restraint function is played during hitting, while crash energy absorption and structural support effect can be taken into account.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (4)
1. a kind of auto parts and components part intensity adjustable design method, it is characterised in that: the following steps are included:
Step 1: determine components by collision course, calculate components perpendicular to by collision course cross section equivalent width,
Material thickness, base material yield strength；
Step 2: judge whether to have on components with by the vertical seamed edge of collision course, and if it exists, laser then is carried out to seamed edge and is quenched
Fire, the circular arc width quenched to seamed edge meet formula:
Step 3: if having on components with by the parallel seamed edge of collision course, selection seamed edge is strengthened or along with by collision side
360 degree of laser quenchings are carried out to components to vertical cross section, form intensity adjustable circle, circle interval point is strengthened in multiple changes
Cloth is on components；Interval width between the intensity adjustable circleIn formula: d is to strengthen spacing, and h is side
Thickness of pipe wall, c are cross section equivalent width described in step 1；The laser quenching width p of intensity adjustable circle are as follows: p=d/4；Intensity adjustable
Relationship between the quantity and consecutive mean crushing force of circle is:
In formula:Strengthen square tube for intensity adjustable border
Consecutive mean crushing force, Y be original base material yield strength, v0To impact initial velocity, n is the number of intensity adjustable circle；
Step 4: whole tempering heat treatment is carried out to components.
2. auto parts and components part intensity adjustable design method according to claim 1, it is characterised in that: if the length of components
The cross section equivalent width c that L is greater than 2 times is spent, then quench with by the parallel linear laser of collision course in the end of components
Fire.
3. auto parts and components part intensity adjustable design method according to claim 2, it is characterised in that: described is linear sharp
The length of the quenching line segment of photoquenching is greater than the cross section equivalent width c of 1 components, and quenches line segment and be evenly distributed in zero
The end of part.
4. auto parts and components part intensity adjustable design method according to claim 1, it is characterised in that: in step 4 to zero
Before component carries out whole tempering heat treatment, it is provided with through-hole groove on the steel surface by collision end of auto parts and components, it is described
Through-hole groove is that one or more is uniformly distributed.
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| CN201810067094.2A CN108441604B (en) | 2018-01-24 | 2018-01-24 | A kind of auto parts and components part intensity adjustable design method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940003248B1 (en) * | 1992-02-29 | 1994-04-16 | 동원금속공업 주식회사 | Method of manufacturing impact beam for automobile |
| CN101802228A (en) * | 2007-09-11 | 2010-08-11 | 奥钢联克雷姆斯有限责任公司 | Method and device for hardening profiles |
| CN102319835A (en) * | 2011-10-17 | 2012-01-18 | 机械科学研究总院先进制造技术研究中心 | Forming method of variable strength hot stamped piece and die |
| CN107557550A (en) * | 2017-08-22 | 2018-01-09 | 大连理工大学 | A kind of intensity adjustable high-strength steel automobile part preparation method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100554753B1 (en) * | 2001-12-27 | 2006-02-24 | 주식회사 포스코 | High strength cold rolled steel sheet with superior formability and weldability and method for manufacturing thereof |
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- 2018-01-24 CN CN201810067094.2A patent/CN108441604B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940003248B1 (en) * | 1992-02-29 | 1994-04-16 | 동원금속공업 주식회사 | Method of manufacturing impact beam for automobile |
| CN101802228A (en) * | 2007-09-11 | 2010-08-11 | 奥钢联克雷姆斯有限责任公司 | Method and device for hardening profiles |
| CN102319835A (en) * | 2011-10-17 | 2012-01-18 | 机械科学研究总院先进制造技术研究中心 | Forming method of variable strength hot stamped piece and die |
| CN107557550A (en) * | 2017-08-22 | 2018-01-09 | 大连理工大学 | A kind of intensity adjustable high-strength steel automobile part preparation method |
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Effective date of registration: 20221223 Address after: 215000 ohm Si Industrial Park, Fenghuangjing village, Weitang Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: YIQING AUTOMOBILE SECURITY SYSTEM (SUZHOU) Co.,Ltd. Address before: No. 300 Hengyu Road, Jiading District, Shanghai, 201806 Patentee before: YIJUE AUTOMOBILE TECHNOLOGY (SHANGHAI) CO.,LTD. |
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