CN104384359A - Stereoscopic rapid heating device and heating method of hot stamping blank - Google Patents
Stereoscopic rapid heating device and heating method of hot stamping blank Download PDFInfo
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- CN104384359A CN104384359A CN201410760581.9A CN201410760581A CN104384359A CN 104384359 A CN104384359 A CN 104384359A CN 201410760581 A CN201410760581 A CN 201410760581A CN 104384359 A CN104384359 A CN 104384359A
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- heating
- blank
- conveying mechanism
- dimensional
- heating clamber
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
Abstract
The invention relates to the technical field of hot stamping, in particular to a stereoscopic rapid heating device and a heating method of a hot stamping blank. The device comprises a first heating chamber and a second heating chamber, wherein the first heating chamber and the second heating chamber are equipped with a first temperature-resistant conveying mechanism and a second temperature-resistant conveying mechanism respectively; the first heating chamber is provided with a plurality of infrared heating lamp tubes for heating the blank along the first temperature-resistant conveying mechanism; the second heating chamber is provided with an electric furnace for heating the blank. The method comprises the steps of conveying the blank to the first heating chamber with the first temperature-resistant conveying mechanism, heating the blank to a setting temperature with the infrared heating lamp tubes, conveying the blank to the second heating chamber with the second temperature-resistant conveying mechanism, and heating the blank and preserving heat with the electric furnace. The device is relatively simple in structure, small in floor area and high in heating efficiency and improves temperature uniformity of the blank and heating efficiency above a curie point.
Description
Technical field
The present invention relates to hot press-formed processing technique field, refer in particular to a kind of three-dimensional nonstorage calorifier and heating means of hot press-formed blank.
Background technology
In recent years, in order to meet the needs of security and energy-saving and emission-reduction (loss of weight), high-strength vehicle steel receive widespread attention.Due to the raising of intensity rank, traditional cold stamping forming technique cannot overcome the dimensional accuracy of the resilience after high strength steel shaping and guarantee auto parts.Hot forming can utilize high strength steel to carry out production complex component, is shaped and quenches to carry out simultaneously, realizes high strength by phase transformation strengthening.Part tensile strength after high-strength steel is hot press-formed can reach 1500MPa and more than, while energy-conservation loss of weight, meet security requirement.Hot forming techniques has become the forward position practical technique of automobile manufacturing field.
Hot press-formed blank needs to be heated to austenitizing and is incubated a period of time, leans on radiation and Convective Heating in usual stove, walking beam furnace or batch-type furnace at the bottom of roller now.Owing to be there is considerable influence by the thickness of heating steel sheet and coating and radiation coefficient to heating, cause the heater length in suitability for industrialized production very long (except batch-type furnace, but it controls comparatively complicated, and policy control comparatively bothers).Reality also has method such as Fast Heating such as employing electromagnetic induction heating and infrared heating etc.Independent employing electromagnetic induction heating needs suitable coil, and the bad and electromagnetic induction heating of Flexible Equipment efficiency of heating surface after higher than Curie-point temperature obviously declines.Certain university have employed electromagnetic induction heating and electric furnace composite heating method, but there is the shortcomings such as Flexible Equipment is bad equally.Infrared heating is generally applied and food industry, but be also employed to heat with steel plate, adopt separately infrared heating steel plate generally to apply and local heat, and lower than austenitizing temperature, even if steel plate is whole be subject to infrared heating, still there is plate temperature homogeneity this shortcoming poor.
Summary of the invention
The technical problem to be solved in the present invention is to provide three-dimensional nonstorage calorifier and the heating means of the hot press-formed blank that a kind of structure is comparatively simple, floor space is little and the efficiency of heating surface is high, not only increase blank temperature uniformity, also improve the efficiency that more than curie point heats.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme: a kind of three-dimensional nonstorage calorifier of hot press-formed blank, comprise the first heating clamber and the second heating clamber, this first heating clamber and the second heating clamber are equiped with the first heatproof conveying mechanism and the second heatproof conveying mechanism respectively, described first heating clamber is provided with multiple infrared heating fluorescent tube for heating blank along the first heatproof conveying mechanism, and described second heating clamber is provided with the electric furnace for heating blank.
Preferably, the outside of described infrared heating fluorescent tube is equiped with reflector.
Preferably, described multiple infrared heating fluorescent tube parallel arranged is arranged.
Preferably, the feed direction of described first heatproof conveying mechanism and the second heatproof conveying mechanism is contrary.
Preferably, described first heating clamber is positioned at directly over the second heating clamber, or described first heating clamber is positioned at immediately below the second heating clamber.
A kind of heating means utilizing above-mentioned three-dimensional nonstorage calorifier, first by the first heatproof conveying mechanism, blank is delivered to the first heating clamber, by infrared heating fluorescent tube, design temperature is heated to blank, by the second heatproof conveying mechanism, blank is delivered to the second heating clamber again, by electric furnace, intensification is carried out to blank and heat and insulation.
Preferably, described design temperature is 750 ~ 850 DEG C.
Preferably, the heat time of blank in described first heating clamber is 8 seconds ~ 12 seconds.
Preferably, described design temperature is 800 DEG C, and the heat time of blank in described first heating clamber is 10 seconds.
Preferably, the length of described blank is 1 ~ 2.5m, and width is 0.2 ~ 0.5m.
Beneficial effect of the present invention is:
The invention provides a kind of three-dimensional nonstorage calorifier and heating means of hot press-formed blank, adopt infrared heating that blank is heated to 800 degree from room temperature and also only need about 10s, there is no the restriction of curie point compared to electromagnetic induction heating, and blank self-temperature its firing rate higher and efficiency all can improve.The present invention in actual applications, first adopts infrared ray to be heated rapidly to about 800 degree or higher, then adopts electric furnace radiation heating to carry out follow-up intensification and insulation, make plate homogeneous temperature.Infrared heating and heating by electric cooker combine, and three-dimensional stacking, has the following advantages: not only effectively improve the efficiency of heating surface, saves the energy, enhances productivity, reduce costs; Further improve the uniformity of plate Temperature Distribution, make product quality better; A large amount of minimizing can firing equipment floor space especially, and reduce costs, practicality is strengthened greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the three-dimensional nonstorage calorifier of the present invention.
Detailed description of the invention
For the ease of the understanding of those skilled in the art, below in conjunction with embodiment and accompanying drawing, the present invention is further illustrated, and the content that embodiment is mentioned not is limitation of the invention.
As shown in Figure 1, a kind of three-dimensional nonstorage calorifier of hot press-formed blank, comprise the first heating clamber 1 and the second heating clamber 2, this first heating clamber 1 and the second heating clamber 2 are equiped with the first heatproof conveying mechanism 4 and the second heatproof conveying mechanism 5 respectively, described first heating clamber 1 is provided with multiple infrared heating fluorescent tube 3 for heating blank 6 along the first heatproof conveying mechanism 4, and described second heating clamber 2 is provided with the electric furnace 7 for heating blank 6.
Heater structure of the present invention is simpler, solve the problem that traditional pure dependence heating by electric cooker body of heater floor space is large and the efficiency of heating surface is low, solve the problem relying on separately infrared heating blank 6 poor temperature uniformity, solve and comprise the problem that electromagnetic induction heating device flexibility is poor and the above efficiency of heating surface of curie point is low.
A kind of heating means utilizing above-mentioned three-dimensional nonstorage calorifier, first by the first heatproof conveying mechanism 4, blank 6 is delivered to the first heating clamber 1, design temperature is heated to by infrared heating fluorescent tube 3 pairs of blanks 6, by the second heatproof conveying mechanism 5, blank 6 is delivered to the second heating clamber 2 again, carries out intensification by electric furnace 7 pairs of blanks 6 and heat and insulation.
Adopt infrared heating that blank 6 is heated to 800 degree from room temperature and also only need about 10 seconds, there is no the restriction of curie point compared to electromagnetic induction heating, and blank 6 self-temperature its firing rate higher and efficiency all can improve.The present invention in actual applications, first adopts infrared ray to be heated rapidly to about 800 degree or higher, then adopts electric furnace 7 radiation heating to carry out follow-up intensification and insulation, make plate homogeneous temperature.Infrared heating and electric furnace 7 heating combine, and three-dimensional stacking, has the following advantages: not only effectively improve the efficiency of heating surface, saves the energy, enhances productivity, reduce costs; Further improve the uniformity of plate Temperature Distribution, make product quality better; A large amount of minimizing can firing equipment floor space especially, and reduce costs, practicality is strengthened greatly.
The outside of the described infrared heating fluorescent tube 3 of the present embodiment is equiped with reflector, concrete, described multiple infrared heating fluorescent tube 3 parallel arranged is arranged, the infrared ray part that infrared heating fluorescent tube 3 produces shines directly on blank 6, a part passes through the reflective surface of reflector on blank 6, thus achieving the rapid and uniform heating of blank 6, practicality is stronger.
The described first heatproof conveying mechanism 4 of the present embodiment is contrary with the feed direction of the second heatproof conveying mechanism 5, the direction of motion is contrary but be parallel to each other, transporting velocity equal and opposite in direction or approximately equal, its separately length mate with affiliated heating space, make blank 6 Synchronous Heating in transportation, further increase the treatment effeciency of blank 6 in heating process.
Described first heating clamber 1 of the present embodiment is positioned at directly over the second heating clamber 2, or described first heating clamber 1 is positioned at immediately below the second heating clamber 2, saves the place area occupied of heater further, reduces the production line input cost of manufacturer.
Preferred embodiment: described design temperature is 800 DEG C, the heat time of blank 6 in described first heating clamber 1 is 10 seconds, and the efficiency of heating surface and the plate temperature homogeneity of heater obtain maximized raising.
Certainly, the length of described blank 6 can be 1 ~ 2.5m, width can be 0.2 ~ 0.5m, described design temperature can be determined according to the characteristic of blank 6 and size reasonable, learn through test of many times, described design temperature is the arbitrary temp between 750 ~ 850 DEG C, and the heat time of blank 6 in described first heating clamber 1 is 8 seconds ~ 12 seconds, all effectively can improve the efficiency of heating surface and the product quality of blank 6.
Above-described embodiment is the present invention's preferably implementation, and in addition, the present invention can also realize by alternate manner, and under the prerequisite not departing from the technical program design, any apparent replacement is all within protection scope of the present invention.
Claims (10)
1. the three-dimensional nonstorage calorifier of a hot press-formed blank, it is characterized in that comprising the first heating clamber and the second heating clamber, this first heating clamber and the second heating clamber are equiped with the first heatproof conveying mechanism and the second heatproof conveying mechanism respectively, described first heating clamber is provided with multiple infrared heating fluorescent tube for heating blank along the first heatproof conveying mechanism, and described second heating clamber is provided with the electric furnace for heating blank.
2. the three-dimensional nonstorage calorifier of a kind of hot press-formed blank according to claim 1, is characterized in that: the outside of described infrared heating fluorescent tube is equiped with reflector.
3. the three-dimensional nonstorage calorifier of a kind of hot press-formed blank according to claim 1, is characterized in that: described multiple infrared heating fluorescent tube parallel arranged is arranged.
4. the three-dimensional nonstorage calorifier of a kind of hot press-formed blank according to claim 1, is characterized in that: the feed direction of described first heatproof conveying mechanism and the second heatproof conveying mechanism is contrary.
5. the three-dimensional nonstorage calorifier of a kind of hot press-formed blank according to claim 1, it is characterized in that: described first heating clamber is positioned at directly over the second heating clamber, or described first heating clamber is positioned at immediately below the second heating clamber.
6. one kind utilizes the heating means of three-dimensional nonstorage calorifier described in claim 1 ~ 5 any one, it is characterized in that: first by the first heatproof conveying mechanism, blank is delivered to the first heating clamber, by infrared heating fluorescent tube, design temperature is heated to blank, by the second heatproof conveying mechanism, blank is delivered to the second heating clamber again, by electric furnace, intensification is carried out to blank and heat and insulation.
7. the heating means of a kind of three-dimensional nonstorage calorifier according to claim 6, is characterized in that: described design temperature is 750 ~ 850 DEG C.
8. the heating means of a kind of three-dimensional nonstorage calorifier according to claim 6, is characterized in that: the heat time of blank in described first heating clamber is 8 seconds ~ 12 seconds.
9. the heating means of a kind of three-dimensional nonstorage calorifier according to claim 6, is characterized in that: described design temperature is 800 DEG C, the heat time of blank in described first heating clamber is 10 seconds.
10. the heating means of a kind of three-dimensional nonstorage calorifier according to claim 6, is characterized in that: the length of described blank is 1 ~ 2.5m, and width is 0.2 ~ 0.5m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410760581.9A CN104384359B (en) | 2014-12-12 | 2014-12-12 | The three-dimensional nonstorage calorifier of a kind of hot press-formed blank and heating means |
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| CN201410760581.9A CN104384359B (en) | 2014-12-12 | 2014-12-12 | The three-dimensional nonstorage calorifier of a kind of hot press-formed blank and heating means |
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| CN104384359B CN104384359B (en) | 2016-09-14 |
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| CN105702379A (en) * | 2016-02-24 | 2016-06-22 | 上海上创超导科技有限公司 | High-temperature superconductor tape serialization rapid heating device |
| CN106944555A (en) * | 2017-05-18 | 2017-07-14 | 赵洪栋 | A kind of hot press-formed apparatus for production line of short route and its production technology |
| CN110118486A (en) * | 2019-05-28 | 2019-08-13 | 哈尔滨工业大学（威海） | The thin plate heating multi-functional and infrared composite box-type heating furnace of miniaturization and method |
| CN115477464A (en) * | 2022-10-26 | 2022-12-16 | 湖南大学 | Quartz glass mold pressing forming device and method |
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| CN110118486A (en) * | 2019-05-28 | 2019-08-13 | 哈尔滨工业大学（威海） | The thin plate heating multi-functional and infrared composite box-type heating furnace of miniaturization and method |
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| CN115477464A (en) * | 2022-10-26 | 2022-12-16 | 湖南大学 | Quartz glass mold pressing forming device and method |
| CN115477464B (en) * | 2022-10-26 | 2024-01-23 | 湖南大学 | Quartz glass compression molding device and method |
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| CN104384359B (en) | 2016-09-14 |
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