WO2017196039A1 - 핫스탬핑 공정용 고주파 가열 방법 - Google Patents
핫스탬핑 공정용 고주파 가열 방법 Download PDFInfo
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- WO2017196039A1 WO2017196039A1 PCT/KR2017/004758 KR2017004758W WO2017196039A1 WO 2017196039 A1 WO2017196039 A1 WO 2017196039A1 KR 2017004758 W KR2017004758 W KR 2017004758W WO 2017196039 A1 WO2017196039 A1 WO 2017196039A1
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- WIPO (PCT)
- Prior art keywords
- heating
- heating step
- high frequency
- temperature
- coating film
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Classifications
-
- 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
-
- 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
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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
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- 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
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/12—Aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
- C23C2/285—Thermal after-treatment, e.g. treatment in oil bath for remelting the coating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
- H05B6/101—Induction heating apparatus, other than furnaces, for specific applications for local heating of metal pieces
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Definitions
- the present invention relates to a high frequency heating method for a hot stamping process, and more particularly, to a high frequency heating method for a hot stamping process for heating a steel sheet to be processed into ultra high strength steel.
- hot stamping technology is a molding technology in which a steel sheet is heated to an appropriate temperature (about 900 ° C.), molded at a time by press molding in a press mold, and then rapidly cooled to manufacture a high strength part.
- the high frequency heater requires only a short installation line and can heat the steel sheet in a short time, which is efficient in terms of energy.
- the present invention has been made to improve the problems of the conventional high frequency heating method for hot stamping as described above, and an object thereof is to provide a high frequency heating method for a hot stamping process capable of high frequency heating even at a temperature above the melting point of the coating film. .
- the high-frequency heating method for the hot stamping process is a high frequency at a first temperature increase rate of the steel sheet formed with a coating film of aluminum (Al) on the iron (Fe) base material to the primary target temperature
- a secondary heating step wherein in the second heating step, a compound is formed by the reaction of the coating material and the base material.
- the second heating step it is also possible to adjust the applied current such that the electromagnetic force (F) generated during high frequency heating is smaller than the inter-bonding force of the coating film or the bonding force f between the coating film and the base material (F ⁇ f). It is possible.
- the primary target temperature may be 530 ° C or more and 570 ° C or less, which is a temperature below the melting point of the coating film.
- the secondary target temperature may be 730 ° C or more and 770 ° C or less, which is a temperature at which the steel sheet loses the properties of the ferromagnetic material.
- the second temperature increase rate may be 6.4 °C / s or more, 24 °C / s or less.
- the first heating step and the second heating step is a high frequency heating by the longitudinal magnetic field heating method (LFIH)
- the third heating step may be a high frequency heating by the vertical magnetic field heating method (TFIH).
- a coil having a wider width than that of the coil used in the primary heating step may be used, and the coils may be disposed at intervals wider than the interval of the coils arranged in the primary heating step.
- the secondary heating step may be heated using a coil having a width of 70mm or more, 90mm or less.
- the secondary heating step it is also possible to arrange the heating between the coils 50mm or more, 70mm or less.
- a high frequency heating is performed without forming a compound layer between the coating film and the base material and the coating film is not pushed from the base material even when the high frequency heating is performed at a temperature above the melting point of the coating film. It can be effective.
- FIG. 3 is a flowchart illustrating a high frequency heating method for a hot stamping process according to an embodiment of the present invention
- FIG. 4 is a time-temperature graph of a high frequency heating method for a hot stamping process according to an embodiment of the present invention
- LFIH longitudinal magnetic field heating method
- FIG. 5b is a conceptual diagram of a high frequency heating method of the vertical magnetic field heating method (TFIH) used in the present invention
- Figure 6a is a conceptual diagram representing the magnitude of the electromagnetic force applied to the steel sheet during heating in the conventional heating method and the primary heating step (S10),
- Figure 6b is a conceptual diagram representing the magnitude of the electromagnetic force applied to the steel sheet during heating in the second heating step (S20) of the present invention.
- a high frequency heating method for a hot stamping process includes a first heating step S10, a second heating step S20, and a third heating step S30.
- the first heating step S10 and the second heating step S20 are heated by a high frequency heating method of a longitudinal magnetic field heating method LFIH.
- FIG. 5A shows a conceptual diagram of a high frequency heating method of a longitudinal magnetic field heating method (LFIH).
- LFIH longitudinal magnetic field heating method
- the steel plate 100 is formed of a coating film 120 of aluminum (Al) on the iron (Fe) -based base material 110 (see FIG. 2).
- Iron has high tensile strength and can be made of ultra high strength steel of 150kg / mm2 or more when processed by hot stamping method.
- the coating film 120 uses an aluminum material of silicon aluminum (Al-Si).
- the first heating step (S10) is heated to a temperature below the melting point of the coating film 120 of the primary target temperature (T 1 ) for a time of more than 5 seconds, 10 seconds or less.
- the temperature below the melting point of the coating film 120 is preferably 530 °C or more, 570 °C or less. If the temperature is less than 530 ° C., the time required for heating in the second heating step (S20) becomes long, and accordingly, an equipment line required for heating becomes long, which is inefficient. In addition, when the temperature exceeds 570 ° C, a problem may occur in which the coating film 120 is melted in advance.
- the first heating rate (V 1 ) is 51 ° C. because the heating is performed at a temperature of 530 ° C. or more and 570 ° C. or less for a time of 5 seconds or more and 10 seconds or less. / s or more and 110 degrees C / s or less.
- the secondary heating step (S20) is a high frequency heating of the steel sheet 100 passed through the primary heating step (S10) at a secondary temperature increase rate to the secondary target temperature by melting the coating film 120 by melting the coating film ( 120)
- the compound 130 is formed by the reaction of the material and the base material 110.
- the compound 130 may be formed on the surface of the base material 110 as shown in FIG. 2 or may be formed inside the coating film 120 although not shown in the drawing.
- the coating layer 120 may be prevented from being aggregated or flowing down in the third heating step S30.
- the coating film 120 is made of aluminum aluminum (Al-Si) -based aluminum material, and the steel sheet 100 is made of iron (Fe)
- the compound 130 is Al 8 Fe 2 Si, Al 2 Fe 2 Si, or Fe 2 Al 5 / FeAl 2 It may be formed of at least one of the compounds.
- Al 8 Fe 2 Si compound has a melting temperature of about 855 °C
- Al 2 Fe 2 Si compound has a melting temperature of about 1050 °C
- Fe 2 Al 5 / FeAl 2 Since the compound has a melting temperature of about 1156 ° C., such a compound is formed in the coating film 120 so that the melting temperature of the coating film 120 is increased so that the coating film 120 is agglomerated or flows in the third heating step S30. The phenomenon can be prevented.
- the steel plate 100 that has passed through the first heating step S10 is heated at a second temperature rising rate V 2 to a second target temperature T 2 .
- the applied current is adjusted so that the electromagnetic force (F) generated during high frequency heating is smaller than the coupling force (f) between the coating film 120 and the base material 110 (F ⁇ f).
- the molten coating film 120 is moved by the electromagnetic force (F) may be separated from the base material 110, agglomeration or flow may occur. In this case, since the thickness of the coating film 120 is not constant, the surface of the steel sheet 100 is uneven (see FIG. 1).
- the applied current is adjusted to be smaller than the bonding force between the particles of the coating film 120 or the bonding force (f) between the coating film 120 and the base material 110, and as a result the steel sheet
- the eddy current I 2 generated at 100 becomes smaller, and the secondary temperature increase rate V 2 is reduced than the primary temperature increase rate V 1 .
- the second heating step (S20) is heated to a temperature (Currie temperature) that loses the properties of the ferromagnetic material of the steel sheet 100, the secondary target temperature (T 2 ) for a time of 10 seconds or more, 25 seconds or less.
- the coating film 120 may be separated from the base material 110 by the electromagnetic force (F), agglomeration or flow may occur, 25 seconds If the heating to the second target temperature (T 2 ) for a time exceeding the length of the equipment line required for heating is reduced efficiency.
- the temperature at which the steel sheet 100 loses the properties of the ferromagnetic material is preferably 730 ° C or more and 770 ° C or less.
- the time to be heated in the third heating step (S30) is long, and accordingly the equipment line required for heating is inefficient because it is long.
- the steel sheet 100 loses the properties of the ferromagnetic material, causing a problem in that the heating efficiency rapidly decreases under the high frequency heating method of the longitudinal magnetic field heating method (LFIH).
- the secondary target temperature (T 2 ) is heated from the primary target temperature (T 1 ) to the secondary target temperature (T 2 ) for a time of 10 seconds or more and 25 seconds or less, the secondary temperature increase rate (V 2 ) is 6.4 ° C./s or more and 24 ° C. less than / s
- winding intervals (coil width and coil spacing) than the coil 210a used in the primary heating step (S10)
- the large coil 210b is used for heating.
- the coating film 120 may aggregate or flow down, and when the width of the coil is greater than 90mm or the spacing between the coils is greater than 70mm, heating may occur. It is inefficient because the required equipment line is long.
- the spacing between the coils is less than 50mm.
- a coil 210b having a wider width than that of the coil 210a used in the first heating step S10 is used, and is disposed in the first heating step S10.
- the coil 210b may be disposed at an interval wider than that of one coil 210a to form the uniform coating layer 120.
- the magnitude of the electromagnetic force F applied to the steel plate 100 by the coil 210a to which the conventional winding interval is applied is represented (arrow).
- the magnitude of the electromagnetic force F per unit area applied to the steel sheet 100 is 1.29 ⁇ 10 7 to 9.09 ⁇ 10 7 (N / m 2 ). Is measured. That is, the electromagnetic force (F) applied to the steel sheet 100 is a deviation of up to seven times. This is a phenomenon caused by a high current-power density applied per unit area when the width of the coil 210a is narrow and the interval between the coils 210a is narrow. Therefore, a phenomenon in which the electromagnetic force F is not uniformly maintained and is concentrated in one place may occur, and the coating layer 120 may aggregate or flow down.
- the magnitude of the electromagnetic force (F) per unit area applied to the steel sheet 100 is 1.29 ⁇ 10 7 to 2.59 ⁇ 10 7 (N / m 2 ) . That is, in the present embodiment, the width of the coil 210b is widened and the interval between the coils 210b is widened to reduce the variation of the electromagnetic force F per unit area to two times or less. Therefore, according to the present exemplary embodiment, since the relatively uniform electromagnetic force F is applied to the steel sheet 100, the coating layer 120 may be prevented from agglomerating or flowing down.
- the electromagnetic force F measured at the side end portion of the steel sheet 100 in the advancing direction shown in FIG. 6B is independent of agglomeration and dripping of the coating layer 120 with the force received by the entire steel sheet 100. Do.
- the steel plate 100 that has passed through the second heating step S20 is heated at a third temperature increase rate V 3 to a third target temperature T 3 .
- the tertiary heating step (S30) is a high frequency heating by a vertical magnetic field heating method (TFIH).
- FIG. 5B is a conceptual diagram of the high frequency heating method of the vertical magnetic field heating method (TFIH).
- the vertical magnetic field heating method (TFIH) is described.
- Two vertical coils 220 are disposed vertically and vertically along the transfer path of the steel plate 100, and the steel plate 100 is disposed. Pass it through.
- the ferromagnetic material such as iron (Fe) absorbs the magnetic field generated by the coil 210 to facilitate heating, while having the property of nonmagnetic material. If there is, the magnetic field generated by the coil 210 is not absorbed and the heating efficiency is lowered.
- the high-frequency heating in the longitudinal magnetic field heating method (LFIH), and after reaching the Curie temperature vertical magnetic field Heating efficiency can be maximized by high frequency heating with a heating method (TFIH).
- the third heating step (S30) is heated to 900 ° C or more, 950 ° C or less, which is the third target temperature (T 3 ) for 2 seconds or more, 5 seconds or less. Therefore, since the second target temperature (T 2 ) is heated to the third target temperature (T 3 ) for a time of 2 seconds or more and 5 seconds or less, the third heating rate (V 3 ) is 26 °C / s or more 110 °C less than / s
- the third heating step (S30) of the present invention is not limited to the third target temperature (T 3 ), it is possible to increase the temperature to a higher temperature as needed, after the third heating step (S30) It is also possible to add additional processing of the steel sheet 100 to the.
- the first temperature increase rate (V 1 ) is the slope of the interval 0 ⁇ t 1 of the graph
- the second temperature increase rate (V 2 ) is the slope of the interval t 1 ⁇ t 2 of the graph
- the third temperature increase rate (V 3 ) is the slope of the interval t 2 ⁇ t 3 of the graph.
- the high frequency heating method for hot stamping process can introduce a high frequency heating method with high energy efficiency to heat the steel plate 100 at a rate of 110 °C / s,
- the coating film 120 may be prevented from being pushed, and the heating efficiency may be reduced in a section of 750 ° C. or more.
- the steel sheet is heated by using a coil 210b having a larger winding distance (the width of the coil and the gap between the coils) than the coil 210a used in the first heating step S10.
- a coil 210b having a larger winding distance (the width of the coil and the gap between the coils) than the coil 210a used in the first heating step S10.
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Abstract
Description
Claims (9)
- 철(Fe)계 모재에 알루미늄(Al) 소재의 코팅막이 형성된 강판을 1차 목표온도까지 1차 승온속도로 고주파 가열하는 1차 가열 단계;상기 1차 가열 단계를 통과한 상기 강판을 2차 목표온도까지 2차 승온속도로 고주파 가열하여 상기 코팅막을 용융시키되, 상기 2차 승온속도가 상기 1차 승온속도보다 작도록 가열하는 2차 가열 단계; 및상기 2차 가열 단계를 통과한 상기 강판을 3차 목표온도까지 3차 승온속도로 고주파 가열시키되, 상기 3차 승온속도가 상기 2차 승온속도보다 크도록 가열하는 3차 가열 단계;를 포함하고,상기 2차 가열 단계에서는 상기 코팅막 소재와 상기 모재 소재의 반응에 의해 화합물이 형성되는 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
- 제1항에 있어서,상기 2차 가열 단계에서는,고주파 가열시 발생되는 전자기력(F)이 상기 코팅막의 입자간 결합력 또는 상기 코팅막과 상기 모재 사이의 결합력(f)보다 작도록(F<f) 인가전류를 조정하는 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
- 제1항에 있어서,상기 1차 목표온도는,상기 코팅막의 용융점 이하의 온도인 530℃이상, 570℃이하인 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
- 제1항에 있어서,상기 2차 목표온도는,상기 강판이 강자성체의 성질을 잃는 온도인 730℃이상, 770℃이하인 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
- 제1항에 있어서,상기 2차 승온속도는,6.4℃/s 이상, 24℃/s 이하인 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
- 제1항에 있어서,상기 1차 가열 단계 및 상기 2차 가열 단계는 종방향 자계 가열 방식(LFIH)으로 고주파 가열하고, 상기 3차 가열 단계는 수직형 자계 가열 방식(TFIH)으로 고주파 가열하는 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
- 제2항에 있어서,상기 2차 가열 단계에서는,상기 1차 가열 단계에서 사용한 코일보다 폭이 넓은 코일을 사용하고, 상기 1차 가열 단계에서 배치한 코일의 간격보다 넓은 간격으로 코일을 배치하는 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
- 제7항에 있어서,상기 2차 가열 단계에서는,폭이 70mm 이상, 90mm 이하인 코일을 사용하여 가열하는 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
- 제7항에 있어서,상기 2차 가열 단계에서는,코일 사이의 간격을 50mm 이상, 70mm 이하로 배치시켜 가열하는 것을 특징으로 하는 핫스탬핑 공정용 고주파 가열 방법.
Priority Applications (6)
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US16/068,382 US11014138B2 (en) | 2016-05-09 | 2017-05-08 | Induction heating method for hot stamping process |
ES17796339T ES2908213T3 (es) | 2016-05-09 | 2017-05-08 | Método de calentamiento a alta frecuencia para proceso de estampación en caliente |
BR112018014793-1A BR112018014793B1 (pt) | 2016-05-09 | 2017-05-08 | Método de aquecimento por indução de alta frequência para processo de estampagem a quente |
JP2018517199A JP6549319B2 (ja) | 2016-05-09 | 2017-05-08 | ホットスタンピング工程用高周波加熱方法 |
CN201780005791.9A CN108472709B (zh) | 2016-05-09 | 2017-05-08 | 用于热冲压成形工艺的高频加热方法 |
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KR102366284B1 (ko) | 2020-12-28 | 2022-02-23 | 현대제철 주식회사 | 핫 스탬핑 부품 및 그 제조방법 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080112487A (ko) * | 2007-06-21 | 2008-12-26 | 현대자동차주식회사 | 핫스탬핑용 블랭크의 가열방법 |
KR101125069B1 (ko) * | 2009-10-09 | 2012-06-13 | 주식회사 엠에스 오토텍 | 핫 스탬핑용 가열로 장치 및 블랭크 가열방법 |
JP5201003B2 (ja) * | 2008-04-30 | 2013-06-05 | 新日鐵住金株式会社 | 熱間プレス成形用鋼板の加熱装置及び加熱方法 |
JP5551184B2 (ja) * | 2009-02-02 | 2014-07-16 | アルセロルミッタル インベスティガシオン イ デサロージョ エセ.エレ. | コーティングされたスタンピング部品の製造方法、及び同方法から作製される部品 |
KR20160003945A (ko) * | 2014-07-01 | 2016-01-12 | 주식회사 새한산업 | 고주파 열처리와 핫 스탬핑을 이용한 성형장치 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS521003B2 (ko) * | 1974-03-28 | 1977-01-12 | ||
JPS5840834B2 (ja) * | 1978-05-26 | 1983-09-08 | 三菱電機株式会社 | 誘導加熱装置 |
JPS5529822A (en) * | 1978-08-24 | 1980-03-03 | Seven Eng:Kk | Heating roller fixing device |
US5808281A (en) * | 1991-04-05 | 1998-09-15 | The Boeing Company | Multilayer susceptors for achieving thermal uniformity in induction processing of organic matrix composites or metals |
US5922234A (en) * | 1996-07-19 | 1999-07-13 | Geneva Steel | System apparatus and method for heating metal products in an oscillating induction furnace |
US6455825B1 (en) * | 2000-11-21 | 2002-09-24 | Sandia Corporation | Use of miniature magnetic sensors for real-time control of the induction heating process |
JP4884606B2 (ja) * | 2001-07-11 | 2012-02-29 | 新日本製鐵株式会社 | 加熱成形用鋼板の加熱方法 |
JP4912912B2 (ja) * | 2007-02-16 | 2012-04-11 | 新日本製鐵株式会社 | 誘導加熱装置 |
JP5476676B2 (ja) * | 2008-04-22 | 2014-04-23 | 新日鐵住金株式会社 | ホットプレス部材及びその製造方法 |
DE102010020373A1 (de) * | 2010-05-12 | 2011-11-17 | Voestalpine Stahl Gmbh | Verfahren zur Herstellung eines Bauteils aus einem Eisen-Mangan-Stahlblech |
KR101829854B1 (ko) * | 2011-04-01 | 2018-02-20 | 신닛테츠스미킨 카부시키카이샤 | 도장 후 내식성이 우수한 핫 스탬핑 성형된 고강도 부품 및 그 제조 방법 |
WO2013157522A1 (ja) * | 2012-04-18 | 2013-10-24 | 新日鐵住金株式会社 | Al系めっき鋼板、Al系めっき鋼板の熱間プレス方法及び自動車部品 |
KR101466291B1 (ko) | 2013-04-17 | 2014-12-01 | (주)에프티이앤이 | 제어 시스템이 구비된 전기방사장치 |
CN103878237B (zh) * | 2014-03-24 | 2015-04-15 | 华中科技大学 | 一种高强钢热冲压成形零件加工的方法 |
-
2016
- 2016-09-30 KR KR1020160126380A patent/KR101720501B1/ko active IP Right Grant
-
2017
- 2017-05-08 EP EP17796339.4A patent/EP3456427B1/en active Active
- 2017-05-08 WO PCT/KR2017/004758 patent/WO2017196039A1/ko active Application Filing
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080112487A (ko) * | 2007-06-21 | 2008-12-26 | 현대자동차주식회사 | 핫스탬핑용 블랭크의 가열방법 |
JP5201003B2 (ja) * | 2008-04-30 | 2013-06-05 | 新日鐵住金株式会社 | 熱間プレス成形用鋼板の加熱装置及び加熱方法 |
JP5551184B2 (ja) * | 2009-02-02 | 2014-07-16 | アルセロルミッタル インベスティガシオン イ デサロージョ エセ.エレ. | コーティングされたスタンピング部品の製造方法、及び同方法から作製される部品 |
KR101125069B1 (ko) * | 2009-10-09 | 2012-06-13 | 주식회사 엠에스 오토텍 | 핫 스탬핑용 가열로 장치 및 블랭크 가열방법 |
KR20160003945A (ko) * | 2014-07-01 | 2016-01-12 | 주식회사 새한산업 | 고주파 열처리와 핫 스탬핑을 이용한 성형장치 |
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BR112018014793A2 (pt) | 2018-12-11 |
EP3456427A4 (en) | 2020-01-01 |
BR112018014793A8 (pt) | 2022-12-20 |
JP6549319B2 (ja) | 2019-07-24 |
CN108472709B (zh) | 2020-02-28 |
KR101720501B1 (ko) | 2017-03-28 |
ES2908213T3 (es) | 2022-04-28 |
US11014138B2 (en) | 2021-05-25 |
US20190022727A1 (en) | 2019-01-24 |
EP3456427A1 (en) | 2019-03-20 |
CN108472709A (zh) | 2018-08-31 |
EP3456427B1 (en) | 2021-12-08 |
JP2018531486A (ja) | 2018-10-25 |
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