CN108927454A - The point heating mould and technique strengthened for the segmentation of hot forming boron steel material - Google Patents
The point heating mould and technique strengthened for the segmentation of hot forming boron steel material Download PDFInfo
- Publication number
- CN108927454A CN108927454A CN201710384678.8A CN201710384678A CN108927454A CN 108927454 A CN108927454 A CN 108927454A CN 201710384678 A CN201710384678 A CN 201710384678A CN 108927454 A CN108927454 A CN 108927454A
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- China
- Prior art keywords
- lower die
- soft zone
- upper mold
- heating
- mold
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
Abstract
The present invention is provided to point heating mould and technique that the segmentation of hot forming boron steel material is strengthened, the lower surface of upper die holder is fixed with upper mold hard area forming insert and upper mold soft zone forming insert；The upper surface of lower die holder is fixed with lower die hard area forming insert, lower die soft zone forming insert, the upper mold soft zone shapes the upper mold soft zone heating element that insert is internally provided at least two normal orientation placements independent, in lattice-like distribution, along workpiece with form surface, and the lower die soft zone heating element of at least two normal orientation placements independent, in lattice-like distribution, along workpiece with form surface is also equipped with inside the lower die soft zone forming insert；Workpiece heating is carried out using the above structure, heating element dot matrix combination is freer, the combination of different dot matrix can be with the temperature in the respective region of independent control, and then control heat treatment of workpieces speed, desired workpiece mechanical performance is finally obtained, thus workpiece mechanical performance is adjusted more independently, conveniently, accurately.
Description
Technical field
The present invention relates to shape under heat treatment plastic forming technology field more particularly to a kind of boron steel steel plate, steel pipe high temperature
And it is segmented reinforcing quenching technological and mold.
Background technique
Automobile boron steel provides possibility as a kind of emerging superhigh intensity hot forming steel, for segmentation reinforcement technique --- and it is same
A part can use different heat treatment process in the different zones of the part, to obtain according to the needs of Automobile Design
Varying strength and plasticity.The production technology of the soft zone technology of hot forming boron steel material is divided into 4 stages：
1）Heating：Boron steel steel plate is heated to be heat-treated required temperature；
2）Transmission：Boron steel steel plate is sent in mold to be punched；
3）Forming：It is shaped at high temperature by mould punching；
4) quenching cooling：Different cooling velocities is controlled in different zones, can be occurred：
a）Hard area is quickly cooled down（>25 °s/sec）.From austenite microstructure to the transformation of martensite microstructure, obtain intensity and
The lower part of extreme hardness, plasticity.Its intensity can achieve 1500~2000MPa, and plasticity is greater than 5%；
B) soft zone cools down at a slow speed（<25 °s/sec）.By controlling different cooling velocities, during austenite structure conversion,
Can be with Slow cooling, transformation to ferrite and pearlite microstructure obtains intensity and hardness is higher, plasticity good zero
Part；It can also comparatively fast cool down, the transformation to bainite microstructure, obtain intensity and hardness is very high, plasticity is moderate part.
In existing production technology, the production technology for boron steel is mostly the solution of the single intensity of HS1150, the program
Although the high material of available intensity, in Automobile Design, especially in the design of car crass protection, work is needed
The intensity and elongation percentage that the mechanical performance of part has in different zones.For example, the region high in workpiece desired strength, it is desirable that use
Material similar with HS1150 performance, but in some regions, need workpiece that there is better elongation percentage, better energy-absorbing effect
Fruit, this area requirement use the similar material of HS400 performance.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, a kind of hot-forming die of boron steel steel plate is provided,
Subregion, the control of dot matrix temperature are carried out to workpiece, and then control workpiece cooling velocity, realizes segmentation reinforcement technique.
The present invention uses following technical scheme：The present invention for hot forming boron steel material segmentation strengthen point heating mould and
Technique, including：Upper die holder, lower die holder, the lower surface of upper die holder are fixed with upper mold hard area forming insert and upper mold soft zone forming edge
Block；The upper surface of lower die holder is fixed with the lower die hard area forming insert and upper mold soft zone matched with upper mold hard area forming insert
The lower die soft zone forming insert that forming insert matches, it is independent that the upper mold soft zone forming insert is internally provided at least two
Upper mold soft zone heating element, the lower die soft zone, which shapes, is also equipped at least two independent lower die soft zone heating units inside insert
Part realizes the Bidirectional heating to workpiece；The upper mold soft zone heating element, lower die soft zone heating element are distributed in lattice-like, real
Now to the two-way dotted heating of workpiece；The upper mold soft zone heating element, lower die soft zone heating element along workpiece with form surface normal direction
It places in direction.
It preferably, further include having temperature control module, the temperature control module includes：Electric control unit, upper mold temperature sensing
Device, upper mold thermoregulator, upper mold heating source, lower die hygrosensor, lower die thermoregulator, lower die heating source；On described
Mould hygrosensor is electrically connected with electric control unit, for the detection to temperature, the electric control unit output end with it is upper
The electrical connection of mould thermoregulator, the upper mold thermoregulator connect with upper mold heating source, for control upper mold heating source to
The output power of mould soft zone heating element；The lower die hygrosensor is electrically connected with electric control unit, for soft to lower die
Area shapes the detection of temperature in insert, and the electric control unit output end is electrically connected with lower die thermoregulator, the lower die
Thermoregulator is connect with lower die heating source, for controlling lower die heating source to the output power of lower die soft zone heating element.
Preferably, the upper mold soft zone forming insert is hot die steel, the upper mold soft zone forming insert and upper die holder
Between be provided with independent upper mold soft zone cooling water channel, isolation upper mold soft zone forming insert to upper die holder and temperature interference.
Preferably, the upper mold hard area forming insert is internally provided with upper mold hard area cooling water channel, realizes to hard area range
The cooling of interior workpiece, while upper mold soft zone forming insert is isolated to the temperature interference of upper mold hard area forming insert.
Preferably, the lower die soft zone forming insert is hot die steel, the lower die soft zone forming insert and lower die holder
Between be provided with independent lower die soft zone cooling water channel, lower die soft zone cooling water channel can be placed in inside lower die holder.
Preferably, the lower die hard area forming insert is internally provided with lower die hard area cooling water channel, realizes to hard area range
The cooling of interior workpiece, while lower die soft zone forming insert is isolated to the temperature interference of lower die hard area forming insert.
Beneficial effects of the present invention：The heating element that present patent application is distributed using independent, dot matrix is realized to workpiece
Heating, different zones control mold temperature using mutually independent temperature control module, and temperature controlled area sensitive degree and constant temperature are quick
Sensitivity depends on the density of die insert inner heating device dot matrix, can achieve very high product quality and stability；Due to
Each heating element is independent, so its dot matrix combination is freer, different dot matrix combinations can be with independent control respectively
The temperature in region, and then heat treatment of workpieces speed is controlled, finally obtain desired workpiece mechanical performance, thus workpiece mechanical performance
It adjusts more independently, conveniently, accurately.
Detailed description of the invention
Fig. 1 is that boron steel hot forming is segmented strengthening digestion equipment total figure schematic diagram；
Fig. 2 is mold heating device schematic diagram；
Fig. 3 is working state schematic representation when workpiece of the present invention is to be processed, is specifically showing for the heat forming technology of boron steel steel plate
It is intended to；
Fig. 4 is the present invention just working state schematic representation when processing the workpiece, is specifically when processing for boron steel steel plate
Status diagram；
Fig. 5 is the manufactured working state schematic representation of workpiece of the present invention, the shape after specifically getting well for boron steel steel plate is machined
State schematic diagram；
In above-mentioned figure, 1, upper mold hard area forming insert, 2, lower die hard area forming insert, 3, boron steel steel plate workpiece, 4, upper die holder, 5,
Lower die holder, 6, mold heating device electrical cabinet, 7, electric appliance interconnecting device, 8, upper mold hard area cooling water channel, 9, upper mold soft zone forming edge
Block, 10, upper mold hygrosensor, 11, upper mold soft zone heating element, 12, upper mold soft zone cooling water channel, 13, the forming of lower die soft zone
Insert, 14, upper mold hygrosensor, 15, lower die soft zone heating element, 16, lower die soft zone cooling water channel, 17, lower die hard area it is cold
But water route.
Specific embodiment
It is found that the present invention includes as shown in Fig. 1 to Fig. 5：Upper die holder, lower die holder, wherein the lower surface of upper die holder is fixed with
Upper mold hard area shapes insert and upper mold soft zone shapes insert, and it is independent that the upper mold soft zone forming insert is internally provided at least two
Upper mold soft zone heating element, upper mold soft zone heating element in lattice-like be distributed, part upper mold soft zone heating element is along workpiece type
The normal orientation in face is placed, little positioned at the upper mold soft zone heating element of workpiece point heating region and the angle of workpiece with form surface normal direction
In 75 °.
It is inlayed likewise, the upper surface of lower die holder is fixed with the lower die hard area forming matched with upper mold hard area forming insert
Block, the lower die soft zone matched with upper mold soft zone forming insert shape insert, are also provided with inside the lower die soft zone forming insert
Have it is at least two independent, be distributed lower die soft zone heating element in lattice-like, the two-way dotted heating to workpiece is realized, under part
Mould soft zone heating element along workpiece with form surface normal orientation place, positioned at workpiece point heating region lower die soft zone heating element with
The angle of workpiece with form surface normal direction is not more than 75 °.
Preferably, further include having temperature control module, realize that the computer heating control of spot distribution, the temperature control module include：Electricity
Gas control unit, upper mold hygrosensor, upper mold thermoregulator, upper mold heating source, lower die hygrosensor, lower die temperature tune
Save device, lower die heating source；The upper mold hygrosensor is electrically connected with electric control unit, for shaping insert to upper mold soft zone
The detection of interior temperature, the electric control unit output end are electrically connected with upper mold thermoregulator, the upper mold thermoregulator
It is connect with upper mold heating source, the upper mold heating source is connect with upper mold soft zone heating element again, for controlling upper mold heating source pair
The output power of upper mold soft zone heating element；The lower die hygrosensor is electrically connected with electric control unit, for lower die
Soft zone shapes the detection of temperature in insert, and the electric control unit output end is electrically connected with lower die thermoregulator, under described
Mould thermoregulator is connect with lower die heating source, and the lower die heating source is connect with lower die soft zone heating element again, for controlling
Lower die heating source is specifically the heating zone for controlling lower die soft zone heating element to the output power of lower die soft zone heating element
Domain, the combination of the element heated, number of combinations etc..
Preferably, the electric control unit can be industrial PLC control system or industrial computer.
Preferably, the upper mold soft zone forming insert is hot die steel, the upper mold soft zone forming insert and upper die holder
Between be provided with independent upper mold soft zone cooling water channel, for upper mold soft zone forming insert to be isolated to the temperature interference of upper die holder.
Preferably, the upper mold hard area forming insert is internally provided with upper mold hard area cooling water channel, realizes to hard area range
The cooling of interior workpiece, while upper mold soft zone forming insert is isolated to the temperature interference of upper mold hard area forming insert.
Preferably, the lower die soft zone forming insert is hot die steel, the lower die soft zone forming insert and lower die holder
Between be provided with independent lower die soft zone cooling water channel, lower die soft zone cooling water channel can be placed in inside lower die holder, for every
From lower die soft zone forming insert to the temperature interference of lower die holder.
Preferably, the lower die hard area forming insert is internally provided with lower die hard area cooling water channel, realizes to hard area range
The cooling of interior workpiece, while lower die soft zone forming insert is isolated to the temperature interference of lower die hard area forming insert.
Work pieces process is carried out using above structure, step is：S1, above-mentioned mold is installed on press machine, and connected
Mold cooling water passage；S2, boron plate are heated to complete austenitizing in Work-piece heating arrangement；
S3, the upper and lower mould soft zone heating element of electric appliance interconnecting device both ends connection of mold heating equipment and mold heating device are electrical
Cabinet is powered, pre- before shaping insert progress hot forming to upper and lower mould soft zone by the heating element of hot-forming die internal independence
Heat；S4, boron steel steel plate material is taken out from the Work-piece heating arrangement of S2, is placed in mold provided by this patent；S5, pressure
Machine top shoe drives upper mold decline to make mold closure, forming；After the completion of S6, hot forming, press machine is remained in up to bottom dead centre
Position is kept closed and pressurizes, and continues to export energy to mold under mold heating device energized state, PLC or industry meter
Calculation machine gives upper and lower mould temperature according to the temperature signal obtained from mold temperature detecting element, and according to temperature signal output order
Adjuster, using thermoregulator control heating source work, be finally embodied in control dot matrix soft zone heating element heats region,
The work number of heating element；
Mold is exercised on S7, press machine top shoe to open, and takes out workpiece；
S8, compact heat drip molding complete cycle and hole, obtain required dimension workpiece；
S9, it is tested by crystal phase, stretching experiment, hardness test etc. confirms part soft zone material property, needs basis in debugging process
Soft zone material property adjusts mold heating element parameters.
Claims (7)
1. for the point heating mould that the segmentation of hot forming boron steel material is strengthened, including：Upper die holder, lower die holder, the following table of upper die holder
Face is fixed with upper mold hard area forming insert and upper mold soft zone forming insert；The upper surface of lower die holder is fixed with to be shaped with upper mold hard area
The lower die soft zone forming insert that the lower die hard area that insert matches shapes insert, matches with upper mold soft zone forming insert, it is special
Sign is：The upper mold soft zone forming insert is internally provided at least two independent upper mold soft zone heating elements, the lower die
At least two independent lower die soft zone heating elements are also equipped with inside soft zone forming insert, realize the Bidirectional heating to workpiece；
The upper mold soft zone heating element, lower die soft zone heating element are distributed in lattice-like, realize the two-way dotted heating to workpiece；Institute
State upper mold soft zone heating element, lower die soft zone heating element is placed along the normal orientation of workpiece with form surface.
2. the point heating mould according to claim 1 strengthened for the segmentation of hot forming boron steel material, it is characterised in that：Also
It include temperature control module, the temperature control module includes：Electric control unit, upper mold hygrosensor, upper mold thermoregulator,
Upper mold heating source, lower die hygrosensor, lower die thermoregulator, lower die heating source；The upper mold hygrosensor and electrical
Control unit electrical connection, for the detection to temperature, the electric control unit output end is electrically connected with upper mold thermoregulator,
The upper mold thermoregulator is connect with upper mold heating source, for controlling output of the upper mold heating source to upper mold soft zone heating element
Power；The lower die hygrosensor is electrically connected with electric control unit, for the inspection to temperature in lower die soft zone forming insert
It surveys, the electric control unit output end is electrically connected with lower die thermoregulator, and the lower die thermoregulator and lower die heat
Source connection, for controlling lower die heating source to the output power of lower die soft zone heating element.
3. the point heating mould according to claim 1 strengthened for the segmentation of hot forming boron steel material, it is characterised in that：Institute
Stating upper mold soft zone forming insert is hot die steel, is provided on independent between the upper mold soft zone forming insert and upper die holder
Mould soft zone cooling water channel, isolation upper mold soft zone forming insert to upper die holder and temperature interference.
4. the point heating mould according to claim 1 strengthened for the segmentation of hot forming boron steel material, it is characterised in that：Institute
It states upper mold hard area forming insert and is internally provided with upper mold hard area cooling water channel, realize the cooling to the workpiece within the scope of hard area, together
When isolation upper mold soft zone forming insert to upper mold hard area forming insert temperature interference.
5. the point heating mould according to claim 1 strengthened for the segmentation of hot forming boron steel material, it is characterised in that：Institute
Stating lower die soft zone forming insert is hot die steel, be provided between lower die soft zone forming insert and lower die holder it is independent under
Lower die soft zone cooling water channel can be placed in inside lower die holder by mould soft zone cooling water channel.
6. the point heating mould according to claim 1 strengthened for the segmentation of hot forming boron steel material, it is characterised in that：Institute
It states lower die hard area forming insert and is internally provided with lower die hard area cooling water channel, realize the cooling to the workpiece within the scope of hard area, together
When isolation lower die soft zone forming insert to lower die hard area forming insert temperature interference.
7. using electrical heating process described in any of the above-described claim, it is characterised in that：Its step is：S1, by above-mentioned mold
It is installed on press machine, and connects mold cooling water passage；S2, boron plate are heated to complete austenitizing in Work-piece heating arrangement；
The upper and lower mould soft zone heating element of electric appliance interconnecting device both ends connection and mold heating device electrical cabinet of S3, mold heating equipment,
It is powered, the preheating before insert carries out hot forming is shaped to upper and lower mould soft zone by the heating element of hot-forming die internal independence；
S4, boron steel steel plate material is taken out from the Work-piece heating arrangement of S2, is placed in mold provided by this patent；S5, press machine
Top shoe drives upper mold decline to make mold closure, forming；After the completion of S6, hot forming, press machine is remained in up to bottom dead centre position
It sets, be kept closed and pressurize, continue to export energy to mold under mold heating device energized state, PLC or industry calculate
Machine gives upper and lower mould temperature tune according to the temperature signal obtained from mold temperature detecting element, and according to temperature signal output order
Device is saved, using the work of thermoregulator control heating source, control dot matrix soft zone heating element heats region is finally embodied in, adds
The work number of thermal element；Mold is exercised on S7, press machine top shoe to open, and takes out workpiece；S8, compact heat drip molding complete cycle and
Hole obtains required dimension workpiece；S9, it is tested by crystal phase, stretching experiment, hardness test etc. confirms part soft zone material property,
It needs to adjust mold heating element parameters according to soft zone material property in debugging process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384678.8A CN108927454A (en) | 2017-05-26 | 2017-05-26 | The point heating mould and technique strengthened for the segmentation of hot forming boron steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384678.8A CN108927454A (en) | 2017-05-26 | 2017-05-26 | The point heating mould and technique strengthened for the segmentation of hot forming boron steel material |
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| Publication Number | Publication Date |
|---|---|
| CN108927454A true CN108927454A (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710384678.8A Pending CN108927454A (en) | 2017-05-26 | 2017-05-26 | The point heating mould and technique strengthened for the segmentation of hot forming boron steel material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112327970A (en) * | 2020-09-04 | 2021-02-05 | 凌云工业股份有限公司 | Control method for transition region strength of hot-forming variable-strength workpiece |
| CN114453481A (en) * | 2022-02-21 | 2022-05-10 | 上海交通大学 | Indirect hot stamping forming method and die for variable-strength part |
| CN115598174A (en) * | 2022-12-12 | 2023-01-13 | 常州京洋半导体材料科技有限公司（Cn） | Carbon fiber heat preservation felt check out test set |
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| CN114453481A (en) * | 2022-02-21 | 2022-05-10 | 上海交通大学 | Indirect hot stamping forming method and die for variable-strength part |
| CN115598174A (en) * | 2022-12-12 | 2023-01-13 | 常州京洋半导体材料科技有限公司（Cn） | Carbon fiber heat preservation felt check out test set |
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