CN109777928A - A kind of trough girder and its manufacturing process of local strengthening - Google Patents
A kind of trough girder and its manufacturing process of local strengthening Download PDFInfo
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- CN109777928A CN109777928A CN201910266823.1A CN201910266823A CN109777928A CN 109777928 A CN109777928 A CN 109777928A CN 201910266823 A CN201910266823 A CN 201910266823A CN 109777928 A CN109777928 A CN 109777928A
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- trough girder
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Abstract
The present invention provides a kind of local strengthening trough girder and its local strengthening manufacturing process, trough girder, manufacturing process flow and Special quenching inductor including local strengthening.The present invention provides that a kind of structure is upper and lower two aerofoils or aerofoil adds circular arc by quenching strengthening, and the trough girder of the outside of belly not quenching strengthening.Trough girder local strengthening manufacturing process provided by the invention includes process flow and the Special quenching inductor that designs for it.
Description
Technical field
The present invention relates to a kind of local strengthening trough girder and its local strengthening manufacturing process, the groove profile including local strengthening
Beam, manufacturing process flow and Special quenching inductor.
Background technique
The trough girders cross section structure schematic diagram such as truck frame crossbeam is shown in Figure of description 4, belongs to heavy parts, strong by improving
It is allowable using stress that trough girder can be improved in degree level, to reduce part self weight, realize vehicle lightweight and reduce cost.
There are mainly two types of the modes for improving groove profile beam strength.One is the high-strength panel supplied using steel mill, by cutting
It cuts out, fabricated part, i.e. high strength steel plate mode are processed into molding and other process.Secondly passing through for using the plate of regular tenacity
It cuts out, form, quenching and other process is processed into fabricated part, i.e. quenching strengthening mode.
There are two types of the mode of quenching strengthening is usual, integral quenching and selective hardening.
Integral quenching is so that trough girder is integrally strengthened by way of integral heating quenching or laser heating quenching.
Its advantage is that integral strength is high, technique is relatively easy.Disadvantage is high process cost, energy consumption is higher, has intensity at outside of belly position
It is superfluous.Outside of belly hardness is higher after integral quenching, will lead to the difficulty of the processing mounting holes on outside of belly when vehicle refitting is constructed.
Selective hardening is only to need to bear heavily stressed position to part to carry out quenching strengthening, since hardened area is small,
Energy conservation, process costs are relatively low.The upper lower aerofoil of trough girder is to strengthen aerofoil by selective hardening using the maximum position of stress
It is the effective measures for improving groove profile beam strength.In addition the circular arc position of trough girder is also larger using stress, and aerofoil adds circular arc simultaneously
The trough girder design scheme of quenching strengthening brings advantage to part strength is further increased.The outside of belly is smaller using stress, then can protect
Hold its original relatively low intensity level.Therefore needing a kind of, lower aerofoil quenches on trough girder or upper lower aerofoil is together with circular arc
Quenching, and the local strengthening technique to the outside of belly without quenching.
In view of this, studied improvement for existing structure and disadvantage, provide a kind of local strengthening trough girder and its
Local strengthening manufacturing process, to achieve the purpose that more practical and reduce cost.
In addition, the induced current depth of penetration on part adds with the reduction of power frequency when induction heating plate parts
It is deep, it needs to choose higher induction heating current frequency, the induced current depth of penetration generated in part is made to be slightly below 1/2 part wall
It is thick.If underfrequency, the hot depth of penetration of electric current is deeper, then two sides generation is more than the opposite direction of 1/2 wall thickness depth
Electric current will offset each other, reduce heating electrical efficiency in addition Part temperature reach about 800 DEG C after no longer rise.Induced current simultaneously
Frequency can not be too high, too high, and electric current penetrates shallowly, and center portion needs to heat by heat transfer, and speed of production reduces, and also reduces heating
Electrical efficiency, but also induction heating power system equipment purchase cost can be improved.This is also problems solved by the invention.
Summary of the invention
In order to solve the above technical problem, the present invention provides two aerofoils or aerofoils above and below one kind to add circular arc quenching strengthening,
And the trough girder in the outside of belly without quenching strengthening, such as Fig. 5, Fig. 6.For the trough girder for obtaining this structure, the present invention provides
A kind of trough girder local strengthening technique.The trough girder of local strengthening solves mentioned above in the background art for integral quenching
Mode trough girder abdomen area intensity is superfluous, when higher cost and vehicle frame quenching Rear frame processing mounting holes it is relatively difficult and
Traditional induction hardening process problem more demanding to power-supply system frequency band.
The purpose and effect of local strengthening trough girder of the present invention and its local strengthening manufacturing process, by technology hand in detail below
Section is reached:
The present invention provides a kind of trough girder local strengthening technique, invents a kind of Special quenching inductor.The Special quenching
Inductor overall structure is bilateral symmetry two parts, is equipped with inductor coil on the two parts of left and right, the inductor is effective
Circle is formed by coil segment 201, coil segment 202, coil segment 203, coil segment 204, and is serially connected.
The characteristics of inductor coil of the invention, coil segment 201 is identical as the current direction of coil segment 202, coil segment
203 is identical as the current direction of coil segment 204, to solve induced current frequency it is lower when plate parts heating electrical efficiency it is low and
Part temperature no longer rises problem after reaching about 800 DEG C, this sensor structure can be used the induced current frequency lower than 20kHz and add
Hot thickness is less than the trough girder of 8mm.
Trough girder local strengthening technique, comprising the following steps:
1, trough girder part impewdance matching reinforcement process is completed on special equipment；Device structure is by multiple groups idler wheel and frame
It forms, wherein idler wheel height-adjustable, to control trough girder quenching distortion.Heating inductor and water jet are mounted on roller group
Between.
2, trough girder is passed through between the roller group and inductor of equipment；It is heated when across inductor, heating temperature root
It is adjusted according to unlike material, usually 950 DEG C or so；Heated perimeter is that the aerofoil of trough girder or aerofoil add circular arc portion.
3, it is quickly cooled down when the part after local heating passes through water jet by high-pressure water jet；Geneva is obtained after parts quenching
Body tissue, intensity improve, and complete to strengthen processing；Trough girder for frame beam is not usually required to carry out subsequent Temperer
Sequence；When required, it can according to need and be tempered, can be incuded with inductor similar with quenching inducer structure
Heating tempering or other means tempering.
4, the present invention is scanning quenching strengthening process, can also neatly the setting regions on crossbeam length direction be implemented by force
Change processing, i.e., only stress is more demanding, the section strengthened is needed to handle to using, and other sections are not handled.
5, the part after quenching strengthening is usually required by cleaning to eliminate oxide on surface；It is subsequent to carry out other processing steps
Suddenly finished product crossbeam part is obtained, is used for Frame Assembling.
Further, it is respectively mounted on the coil segment 201, coil segment 202, coil segment 203 and coil segment 204 by silicon steel sheet
Or magnetizer made of other soft magnetic materials, heating electrical efficiency about 30% can be improved.
Further, the part of the left and right of the Special quenching inductor two is together in series by connecting copper pipe, and quenching
Transformer, capacitor connection, are connect by cable with induction heating variable-frequency power sources.Coil and series connection copper pipe lead to high pressure water cooling
But.
Further, the inductor coil is made of rectangular section copper pipe, and appearance is " door " character form structure, on one side
There is opening, thus trough girder aerofoil is open is inserted into Special quenching inductor.
Further, the coil segment 202 and coil segment 204 are shorter, retain distance 10mm, trough girder with the trough girder outside of belly
Coil will not be encountered after insertion inductor and avoids short circuit, and coil segment 201 and coil segment 203 are longer, length is higher than aerofoil 10mm,
Guarantee heated perimeter.
Further, 201 coil segment 203 of coil segment, between coil segment 204 and coil segment 202 between be divided into 20mm, eliminate
The offseting phenomenon for the opposing magnetic field that different coil segments generate guarantees electrical efficiency.
Further, trough girder local strengthening technique and its manufactured trough girder are additionally provided with a circle water jet, and are located at slot
Outside type beam section, and water jet is made of copper pipe, steel pipe or other materials, and the hole for water spraying of comparatively dense is machined on water jet,
And the tilt angle between hole for water spraying and trough girder equipped with 45 ° or so, and the spray field of water jet and trough girder aerofoil add circle
Arc region is corresponding.
Compared with prior art, the invention has the following beneficial effects:
The present invention quenches two aerofoils above and below the crossbeam for using stress more demanding using Special quenching inductor
Strengthen, and answers the lower crossbeam outside of belly of force request to retain its relative low strength soft state without strengthening, eliminate to using
Intensity is superfluous, and allowable using stress by improving crossbeam, reduction part self weight realizes vehicle lightweight, reduces production cost,
Convenience is provided for vehicle refitting construction processing mounting holes on vehicle frame.
Secondly, can according to need to aerofoil add circular arc simultaneously quenching strengthening can further improve part strength.
Detailed description of the invention
Overlooking structure diagram when Fig. 1 is the use of embodiment one in the present invention.
Positive structure schematic when Fig. 2 is the use of embodiment one in the present invention.
Positive structure schematic when Fig. 3 is the use of embodiment two in the present invention.
Fig. 4 is the trough girder structural schematic diagram not being quenched in the present invention.
Fig. 5 is trough girder structural schematic diagram of the trough girder aerofoil through reinforcing quenching in the present invention.
Fig. 6 is that trough girder aerofoil adds circular arc through strengthening the trough girder structural schematic diagram of quenching in the present invention.
In figure, the corresponding relationship of component names and accompanying drawing number are as follows:
1- Special quenching inductor, 2- inductor coil, 201- coil segment 201,202- coil segment 202,203- coil
203,204- of section coil segment 204,3- magnetizer, 4- connecting copper pipe, 5- trough girder.
Specific embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for
Illustrate the present invention, but cannot be used to limit the scope of the invention.
Embodiment one:
As shown in attached drawing 1, attached drawing 2, attached drawing 4 and attached drawing 5:
The present invention provides a kind of local strengthening trough girder and its local strengthening manufacturing process, the trough girder including local strengthening
5, manufacturing process flow and Special quenching inductor 1.1 overall structure of Special quenching inductor is bilateral symmetry two parts,
And inductor coil 2 is equipped on the two parts of left and right, the inductor coil 2 is by coil segment 201, coil segment 202, coil
Section 203, coil segment 204 are formed, and are connected between coil segment 201, coil segment 202, coil segment 203, coil segment 204.And coil
Section 201 is identical as the current direction of coil segment 202, and coil segment 203 is identical as the current direction of coil segment 204.The coil segment
201, the magnetizer made of silicon steel sheet or other soft magnetic materials is respectively mounted on coil segment 202, coil segment 203 and coil segment 204
3.It is connected between the inductor coil 2 by intermediate connecting copper pipe 4.
Trough girder local strengthening technique, comprising the following steps:
1, trough girder part impewdance matching reinforcement process is completed on special equipment；Device structure is by multiple groups idler wheel and frame
It forms, wherein idler wheel height-adjustable, to control trough girder quenching distortion.Heating inductor and water jet are mounted on roller group
Between.
2, trough girder is passed through between the roller group and inductor of equipment；It is heated when across inductor, heating temperature root
It is adjusted according to unlike material, usually 950 DEG C or so；Heated perimeter is that the aerofoil of trough girder or aerofoil add circular arc portion.
3, it is quickly cooled down when the part after local heating passes through water jet by high-pressure water jet；Geneva is obtained after parts quenching
Body tissue, intensity improve, and complete to strengthen processing；Trough girder for frame beam is not usually required to carry out subsequent Temperer
Sequence；When required, it can according to need and be tempered, can be incuded with inductor similar with quenching inducer structure
Heating tempering or other means tempering.
4, the present invention is scanning quenching strengthening process, can also neatly the setting regions on crossbeam length direction be implemented by force
Change processing, i.e., only stress is higher, the section strengthened is needed to handle to using, and other sections are not handled.
5, the part after quenching strengthening is usually required by cleaning to eliminate oxide on surface；It is subsequent to carry out other processing steps
Suddenly finished product crossbeam part is obtained, is used for Frame Assembling.
Wherein, the part of the left and right of the Special quenching inductor 1 two is together in series and cable etc. by connecting copper pipe 4
It is connect with induction hardening transformer, capacitor and induction heating variable-frequency power sources.It is cooling that coil and series connection copper pipe lead to high pressure water.
Wherein, the inductor coil 2 is made of rectangular section copper pipe, and appearance is " door " character form structure, is had on one side
Opening, thus 5 aerofoil of trough girder is open is inserted into Special quenching inductor 1.
Wherein, the coil segment 202 and coil segment 204 are shorter, retain distance 10mm enough, trough girder with the trough girder outside of belly
Coil will not be encountered after insertion inductor and avoids short circuit, and coil segment 201 and coil segment 203 are longer, and trough girder 5 is inserted into inductor
Length is higher than aerofoil 10mm afterwards, allows current to enough flow to aerofoil bottom, aerofoil can be heated.
Wherein, coil segment 201 and coil segment 203, between coil segment 204 and coil segment 202 between be divided into 20mm.
Wherein, trough girder local strengthening technique and its manufactured trough girder are additionally provided with a circle water jet, and are located at trough girder
Outside section, and water jet is made of copper pipe, steel pipe or other materials, the hole for water spraying of comparatively dense is machined on water jet, and spray
45 ° or so of tilt angle is equipped between water hole and trough girder, and the spray field of water jet and trough girder aerofoil add circular arc area
Domain is corresponding.
Wherein, the Special quenching inductor 1 can be avoided that low-frequency current is saturating using the heating frequency lower than 20kHz
Enter deeper two sides to offset each other, the electric current of inductor coil 2 is along coil segment 201, coil segment 203, coil segment 202, coil
The flowing of section 204, the two sides current direction at the same position of part is identical, the electricity generated such as coil segment 201 and 202 line of coil segment
Stream direction is identical, and coil segment 203 is identical with the current direction that coil segment 204 generates, and two sides induced current is superimposed in certain depth
Rather than it offsets.
Embodiment two:
As shown in attached drawing 3, attached drawing 4 and attached drawing 6:
The upper section of the inductor coil 2 curves inwardly and wraps up 5 arc section of trough girder, and inductor coil 2
Install magnetizer 3 made of the soft magnetic materials such as silicon steel sheet on longitudinally connected copper pipe additional.Circular arc and aerofoil while Special quenching inductor
It is identical as the dedicated inductor other structures of embodiment one.It can be achieved including circular arc and aerofoil while quenching strengthening, aerofoil adds circle
The crossbeam design scheme of arc while quenching strengthening brings advantage to part strength is further increased.
Application case:
1, a kind of aerofoil for heavy type traction vehicle carriage strengthens trough girder；There is difference on the trough girder cross section of use
Intensity, the trough girder outside of belly is commercially available 500MPa or so plate green strength, and aerofoil and circular arc are strong by local impewdance matching
The intensity greater than 1300MPa obtained after change；
Technology is implemented: commercially available plate, at narrow boards, is made trough girder through trough girder contour roll forming line equipment, cuts rule through longitudinal shear
Measured length, hole needed for processing in hole machined equipment, the impewdance matching strengthening device and inductor designed into the present invention obtain
The high-intensitive trough girder that aerofoil and circular arc are strengthened clears up surface scale, carries out other process processing as needed；The wing is made
Face and circular arc are strengthened and the outside of belly keeps the vehicle frame trough girder of lower state of strength, for high-mechanic Lightweight truck frame assembly
Assembly；
2, a kind of aerofoil for medium and heavy highway transportation vehicle carriage strengthens trough girder；Have on the trough girder cross section of use
There is different intensity, the trough girder outside of belly is commercially available 500MPa or so plate green strength, and aerofoil is strong by local impewdance matching
The intensity greater than 1100MPa obtained after change；
Technology is implemented: commercially available plate, at narrow boards, is made trough girder through trough girder contour roll forming line equipment, cuts rule through longitudinal shear
Measured length, hole needed for processing in hole machined equipment, the impewdance matching strengthening device and inductor designed into the present invention obtain
The only high-intensitive trough girder that aerofoil is strengthened clears up surface scale, carries out other process processing as needed；It is strong that aerofoil is made
Change and the outside of belly keeps the vehicle frame trough girder of lower state of strength, the assembly for high-mechanic Lightweight truck frame assembly.
The embodiment of the present invention is given for the purpose of illustration and description, and is not exhaustively or by this to send out
It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing
Selecting and describe embodiment is and to make those skilled in the art to more preferably illustrate the principle of the present invention and practical application
It will be appreciated that the present invention is to design various embodiments suitable for specific applications with various modifications.
Claims (9)
1. a kind of local strengthening trough girder and its local strengthening manufacturing process, trough girder, manufacturing process stream including local strengthening
Journey and Special quenching inductor.
2. the trough girder of local strengthening as described in claim 1, it is characterised in that: trough girder only adds arc sections in aerofoil or aerofoil
Divide quenching strengthening, the outside of belly is without quenching strengthening.
3. trough girder local strengthening technique as described in claim 1, it is characterised in that: including following process flow,
1) trough girder part impewdance matching reinforcement process is completed on special equipment；Device structure is by multiple groups idler wheel and frame set
At wherein idler wheel height-adjustable, to control trough girder quenching distortion；Heating inductor and water jet be mounted on roller group it
Between；
2) trough girder is passed through between the roller group and inductor of equipment；It is heated when across inductor, heating temperature is not according to
Same material adjustment, usually 950 DEG C or so；Heated perimeter is that the aerofoil of trough girder or aerofoil add circular arc portion；
3) it is quickly cooled down when the part after local heating passes through water jet by high-pressure water jet；Martensite group is obtained after parts quenching
It knits, intensity improves, and completes to strengthen processing；Trough girder for frame beam is not usually required to carry out subsequent tempering process；When
Whenever necessary, it can according to need and be tempered, induction heating can be carried out with inductor similar with quenching inducer structure
The tempering of tempering or other means；
4) present invention is scanning quenching strengthening process, can also neatly setting regions on crossbeam length direction implement to strengthen plus
Work, i.e., only stress is higher, the section strengthened is needed to handle to using, and other sections are not handled；
5) part after quenching strengthening is usually required by cleaning to eliminate oxide on surface；The subsequent other procedure of processings of progress obtain
To finished product crossbeam part, it to be used for Frame Assembling.
4. trough girder selective hardening inductor as described in claim 1, it is characterised in that: 1 overall structure of quenching inducer is a left side
Right symmetrical two parts, and left and right two parts are equipped with inductor coil, the inductor coil by coil segment, coil segment,
Coil segment, coil segment composition, are serially connected；Be respectively mounted on the coil segment, coil segment, coil segment and coil segment by silicon steel sheet or
Magnetizer made of other soft magnetic materials；Pass through intermediate connecting copper pipe series connection between the inductor coil；Coil and
It is cooling that copper pipe of connecting leads to high pressure water.
5. trough girder selective hardening inductor as described in claim 1, it is characterised in that: the inductor coil 2 uses square
The production of tee section copper pipe, appearance are " door " character form structure, there is opening on one side, and thus 5 aerofoil of trough girder is open is inserted into Special quenching
Inductor 1.
6. trough girder selective hardening inductor as described in claim 1, it is characterised in that: the current direction of coil segment and coil segment
Identical, coil segment is identical as the current direction of coil segment；This sensor structure can be used the induced current frequency lower than 20kHz and add
Hot thickness is less than the trough girder of 8mm.
7. trough girder selective hardening inductor as described in claim 1, it is characterised in that: the coil segment and coil segment are shorter,
Retain distance 10mm with the trough girder outside of belly, coil will not be encountered after trough girder insertion inductor and avoid short circuit, and coil segment and line
It is longer to enclose section, length is higher than aerofoil 10mm.
8. trough girder selective hardening inductor as described in claim 1, it is characterised in that: coil segment and coil segment, coil segment with
20mm is divided between coil segment.
9. trough girder selective hardening inductor as described in claim 1, it is characterised in that: inductor includes a dedicated water spray
Device, and be located at outside groove profile beam section, water jet is made of copper pipe, steel pipe or other materials；Comparatively dense is machined on water jet
Hole for water spraying, and have 45 ° or so of tilt angle between hole for water spraying and trough girder, and the spray field of water jet and the trough girder wing
Face adds circular arc sector corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910266823.1A CN109777928B (en) | 2019-04-03 | 2019-04-03 | Locally-reinforced channel beam and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910266823.1A CN109777928B (en) | 2019-04-03 | 2019-04-03 | Locally-reinforced channel beam and manufacturing process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109777928A true CN109777928A (en) | 2019-05-21 |
| CN109777928B CN109777928B (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340140A (en) * | 2019-07-17 | 2019-10-18 | 山东钢铁股份有限公司 | A kind of F fashioned iron and preparation method for magnetic levitation track |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2595819Y (en) * | 2002-12-31 | 2003-12-31 | 郑体成 | Saw blade induction heater |
| CN101139647A (en) * | 2007-09-28 | 2008-03-12 | 东风汽车有限公司 | Method for reinforcing automobile longitudinal beam |
-
2019
- 2019-04-03 CN CN201910266823.1A patent/CN109777928B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2595819Y (en) * | 2002-12-31 | 2003-12-31 | 郑体成 | Saw blade induction heater |
| CN101139647A (en) * | 2007-09-28 | 2008-03-12 | 东风汽车有限公司 | Method for reinforcing automobile longitudinal beam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110340140A (en) * | 2019-07-17 | 2019-10-18 | 山东钢铁股份有限公司 | A kind of F fashioned iron and preparation method for magnetic levitation track |
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| CN109777928B (en) | 2020-10-23 |
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