WO2013047939A1 - 레이저 열처리를 이용한 이종강도를 갖는 강 제품 제조 방법 및 이에 이용되는 열처리 경화강 - Google Patents
레이저 열처리를 이용한 이종강도를 갖는 강 제품 제조 방법 및 이에 이용되는 열처리 경화강 Download PDFInfo
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- WO2013047939A1 WO2013047939A1 PCT/KR2011/007703 KR2011007703W WO2013047939A1 WO 2013047939 A1 WO2013047939 A1 WO 2013047939A1 KR 2011007703 W KR2011007703 W KR 2011007703W WO 2013047939 A1 WO2013047939 A1 WO 2013047939A1
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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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
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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
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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- 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
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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
- C21D2221/00—Treating localised areas of an article
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12674—Ge- or Si-base component
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12736—Al-base component
- Y10T428/1275—Next to Group VIII or IB metal-base component
- Y10T428/12757—Fe
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12785—Group IIB metal-base component
- Y10T428/12792—Zn-base component
- Y10T428/12799—Next to Fe-base component [e.g., galvanized]
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12937—Co- or Ni-base component next to Fe-base component
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- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
Definitions
- the present invention relates to a method for manufacturing a steel product such as a seat frame for automobiles, a bumper back beam, and more particularly, to a method for manufacturing a steel product having heterogeneous strength as a single material using laser heat treatment, and to a heat-treated hardened steel used therein. It is about.
- Hot stamping technology is a technology that can manufacture high-strength parts with tensile strength of 1000 MPa or more by martensifying the microstructure by simultaneously forming a desired shape in a state in which a material having a tensile strength of about 500 MPa is heated to about 900 ° C. .
- Patent Publication No. 10-2009-0086970 Japanese Patent Publication No. 14 2009
- Korean Patent Publication No. 10-0765723 published on October 11, 2007.
- the hot stamping technique is mainly used for the high strength of the whole material, and is hardly applied to the local high strength.
- Korean Patent Publication No. 10-2011-0062428 discloses a method of locally strengthening hot stamping.
- a preliminary process such as applying an insulating material to a portion that will not be locally strengthened before hot stamping, is required.
- Another object of the present invention is to provide a heat treated hardened steel that can be applied to the steel product manufacturing method.
- Steel product manufacturing method for achieving the above object is (a) wt%, carbon (C): 0.1 ⁇ 0.5%, silicon (Si): 0.1 ⁇ 0.5%, manganese (Mn ): 0.5 to 3.0%, phosphorus (P): 0.1% or less, sulfur (S): 0.05% or less, chromium (Cr): 0.01 to 1.0%, aluminum (Al): 0.1% or less, titanium (Ti): 0.2 % Or less, boron (B): preparing a material consisting of 0.0005 ⁇ 0.08% and the remaining Fe and inevitable impurities; (b) forming a molded body by molding the material into a predetermined shape; And (c) performing a laser heat treatment on a portion where high strength is required in the molded body (hereinafter referred to as a high strength portion) to locally strengthen the high strength portion.
- a high strength portion a laser heat treatment on a portion where high strength is required in the molded body
- Heat-treated hardened steel for achieving the other object by weight, carbon (C): 0.1 ⁇ 0.5%, silicon (Si): 0.1 ⁇ 0.5%, manganese (Mn): 0.5 ⁇ 3.0 %, Phosphorus (P): 0.1% or less, sulfur (S): 0.05% or less, chromium (Cr): 0.01 to 1.0%, aluminum (Al): 0.1% or less, titanium (Ti): 0.2% or less, boron ( B): It is composed of 0.0005 ⁇ 0.08% and the remaining Fe and inevitable impurities, has a tensile strength of 400 ⁇ 990MPa and elongation 10 ⁇ 40% before heat treatment, and has a tensile strength 1200 ⁇ 1900MPa and elongation 1 ⁇ 13% after heat treatment It is done.
- a layer selected from an Al plating layer, an Al-Si plating layer, a Zn-Ni plating layer, a Zn plating layer, a Zn-Al plating layer, and a high temperature oxidation resistant resin coating layer may be formed.
- the steel product manufacturing method according to the present invention can be easily localized to a single material by using a laser heat treatment without a preliminary process. Therefore, the steel product manufacturing method according to the present invention can be utilized for the production of a seat frame for automobiles, bumper back beams, etc., which require different strength.
- the steel product manufacturing method according to the present invention can be omitted by the reinforcement as it is possible to increase the strength through laser heat treatment, it can be pursued to be lightweight.
- FIG. 1 is a flow chart schematically showing a method for manufacturing a steel product according to an embodiment of the present invention.
- Figure 2 shows an example of the laser heat treatment applied to the present invention.
- FIG. 1 is a flow chart schematically showing a method for manufacturing a steel product according to an embodiment of the present invention.
- the illustrated steel product manufacturing method includes a material preparation step S110, a molded article manufacturing step S120, and a laser heat treatment step S130.
- carbon (C) 0.1 to 0.5%
- silicon (Si) 0.1 to 0.5%
- manganese (Mn) 0.5 to 3.0%
- phosphorus (P) 0.1% or less
- sulfur (S) ) 0.05% or less
- Chromium (Cr) 0.01 ⁇ 1.0%
- Aluminum (Al) 0.1% or less
- Titanium (Ti) 0.2% or less
- Boron (B) 0.0005 ⁇ 0.08% and other Fe and unavoidable impurities Provide the material to be made.
- the material may be in the form of a blank, hot rolled material or cold rolled material may be used.
- an Al plating layer, an Al-Si plating layer, a Zn-Ni plating layer, a Zn plating layer, a Zn-Al plating layer, and a high temperature oxidation resistant resin coating layer may be formed on the surface of the material. There may be.
- the material to be applied to steel products such as a bumper back beam for automobiles
- the slab reheating, hot rolling at Ar3 or higher, and a conventional hot rolling process to which a winding temperature of about 500 to 600 ° C. is applied, or a conventional cold rolling process to which an annealing temperature of about 600 to 900 ° C. is applied By it may have a tensile strength of 400 ⁇ 990MPa and elongation 10 ⁇ 40%.
- the heat treated hardened steel having the composition may have a tensile strength of 1200 to 1900 MPa and an elongation of 1 to 13% by heat treatment such as laser heat treatment.
- Carbon (C) is added to secure the strength of the steel. Carbon also serves to stabilize the austenite phase depending on the amount of the austenite phase that is concentrated.
- the carbon is preferably added in 0.1 to 0.5% by weight of the total weight of the steel. If the added amount of carbon is less than 0.1% by weight, it is difficult to secure sufficient strength. On the contrary, when the content of carbon exceeds 0.5% by weight, the strength is increased, but toughness and weldability may be greatly reduced.
- Silicon (Si) acts as a deoxidizer and contributes to the strength improvement of steel by solid solution strengthening.
- the silicon is preferably added in 0.1 to 0.5% by weight of the total weight of the steel. If the amount of silicone added is less than 0.1% by weight, the effect of addition is insufficient. In contrast, when the amount of silicon added exceeds 0.5% by weight, weldability and plating characteristics may be degraded.
- Manganese (Mn) contributes to strength enhancement through austenite stabilization.
- the manganese is preferably added at 0.5 to 3.0% by weight of the total weight of the steel. If the amount of manganese added is less than 0.5% by weight, the effect of addition is insufficient. On the contrary, when the amount of manganese exceeds 3.0% by weight, there is a problem that the weldability is lowered and the toughness is deteriorated.
- Phosphorus (P) contributes to strength improvement, but when excessively contained, deterioration of the steel material due to segregation and deterioration of weldability. Therefore, in the present invention, the phosphorus content is limited to 0.1% by weight or less of the total weight of the steel.
- sulfur (S) contributes in part to the improvement of workability, but when excessively contained, excessive generation of MnS inclusions is problematic.
- the sulfur content is limited to 0.05% by weight or less of the total weight of the steel.
- Chromium (Cr) stabilizes ferrite grains to improve elongation, and enhances carbon concentration in the austenite phase to stabilize the austenite phase, thereby contributing to strength improvement.
- the chromium is preferably added in 0.01 to 1.0% by weight of the total weight of the steel. If the content of chromium is less than 0.01% by weight, the effect of addition thereof is insufficient. On the contrary, when the content of chromium exceeds 1.0% by weight, there is a problem that the plating property is lowered.
- aluminum is preferably added at 0.1% by weight or less of the total weight of the steel.
- Titanium (Ti) is a carbonitride-forming element and contributes to strength improvement. However, when the added amount of titanium exceeds 0.2% by weight, it may cause a decrease in toughness.
- titanium is preferably added at 0.2% by weight or less of the total weight of the steel.
- Boron (B) is a strong hardenable element, and even if only 0.0005% by weight or more is added, it contributes to the ultra high strength of the steel after heat treatment.
- the boron is preferably added in 0.0005 to 0.08% by weight of the total weight of the steel.
- the addition amount of boron is less than 0.0005% by weight, the addition effect is insufficient.
- the addition amount of boron exceeds 0.08% by weight, there is a problem that the toughness is greatly reduced due to excessive increase in the hardenability.
- the molding cold molding or the like may be used.
- a high strength portion a portion in which a high strength is required in the molded body to locally strengthen the high strength portion.
- the high-strength portion may be a portion where stress is concentrated, such as a center portion, in a bumper back beam for a vehicle, a portion where stress is concentrated in a rail, a base, a recliner, or an arm applied to a seat frame.
- Laser heat treatment is performed by irradiating a laser, such as a diode laser, to a high intensity portion and locally heating the high intensity portion to an Ac3 temperature or more, approximately Ac3 + 200 ° C, and then cooling it to an Ms temperature or less and approximately Ms to Ms-200 ° C. Can be.
- a laser such as a diode laser
- Cooling is preferably carried out at a cooling rate of 5 ⁇ 300 °C / sec. If the cooling rate is less than 5 ° C / sec, it is difficult to secure sufficient strength. On the contrary, when the cooling rate exceeds 300 ° C / sec, it is difficult to secure toughness and ductility.
- Laser heat treatment can control the laser irradiation time and the laser intensity so that the tensile strength of the high-strength portion is 1200 ⁇ 1900MPa.
- the laser irradiation time can be lengthened or the laser intensity can be increased so that the tensile strength of the high strength portion is about 1900 MPa.
- the laser irradiation time may be relatively short or the laser intensity may be relatively low.
- the laser irradiation time and the laser intensity in the laser heat treatment may vary depending on the intensity of the high intensity target portion.
- the laser irradiation time and laser intensity in the laser heat treatment may vary depending on the laser irradiation apparatus used for the laser heat treatment.
- Figure 2 shows an example of the laser heat treatment applied to the present invention.
- laser irradiation for laser heat treatment may be performed by irradiating the high intensity portion of the molded body 201 fixed to the fixed jig device 220 with the laser beam 210. Heat may be heated to a high temperature while a portion of the laser beam is conducted directly from the portion to which the laser beam is directly irradiated.
- the steel component manufacturing method according to the present invention can be applied to parts that require different strength, such as a bumper back beam for automobiles. Thereby, using a separate reinforcement can be skipped and it can contribute to weight reduction. In addition, since localization is possible only by laser heat treatment, a separate preliminary step for imparting heterogeneous strength to a single material is not required.
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Articles (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Claims (7)
- (a) 중량%로, 탄소(C) : 0.1 ~ 0.5 %, 실리콘(Si) : 0.1 ~ 0.5 %, 망간(Mn) : 0.5 ~ 3.0 %, 인(P) : 0.1 % 이하, 황(S) : 0.05 % 이하, 크롬(Cr) : 0.01 ~ 1.0 %, 알루미늄(Al) : 0.1 % 이하, 티타늄(Ti) : 0.2 % 이하, 보론(B) : 0.0005 ~ 0.08 % 및 나머지 Fe와 불가피한 불순물로 이루어지는 소재를 마련하는 단계;(b) 상기 소재를 미리 정해진 형상으로 성형하여 성형체를 제조하는 단계; 및(c) 상기 성형체에서 고강도가 요구되는 부분(이하, 고강도부라 한다)에 레이저 열처리를 실시하여, 상기 고강도부를 국부적으로 강화시키는 단계;를 포함하는 것을 특징으로 하는 강 제품 제조 방법.
- 제1항에 있어서,상기 (a) 단계에서, 상기 소재는Al 도금층, Al-Si 도금층, Zn-Ni 도금층, Zn 도금층, Zn-Al 도금층 및 고온내산화 수지코팅층 중에서 선택되는 층이 표면에 형성되어 있는 것을 특징으로 하는 강 제품 제조 방법.
- 제1항에 있어서,상기 (c) 단계에서, 상기 레이저 열처리는상기 고강도부에 레이저를 조사하여 상기 고강도부를 Ac3 온도 이상으로 가열한 후, 5 ~ 300 ℃/sec의 냉각속도로 Ms 온도 이하까지 냉각하는 것을 특징으로 하는 강 제품 제조 방법.
- 제1항에 있어서,상기 (a) 단계에서, 상기 소재는인장강도 400~990MPa 및 연신율 10~40%를 갖는 것을 특징으로 하는 강 제품 제조 방법.
- 제4항에 있어서,상기 (c) 단계에서, 상기 레이저 열처리는상기 고강도부의 인장강도가 1200~1900MPa가 되도록, 레이저 조사 시간 및 레이저 강도를 조절하는 것을 특징으로 하는 강 제품 제조 방법.
- 중량%로, 탄소(C) : 0.1 ~ 0.5 %, 실리콘(Si) : 0.1 ~ 0.5 %, 망간(Mn) : 0.5 ~ 3.0 %, 인(P) : 0.1 % 이하, 황(S) : 0.05 % 이하, 크롬(Cr) : 0.01 ~ 1.0 %, 알루미늄(Al) : 0.1 % 이하, 티타늄(Ti) : 0.2 % 이하, 보론(B) : 0.0005 ~ 0.08 % 및 나머지 Fe와 불가피한 불순물로 이루어지고,열처리 전에 인장강도 400~990MPa 및 연신율 10~40%를 가지며,열처리 후에 인장강도 1200~1900MPa 및 연신율 1~13%를 갖는 것을 특징으로 하는 열처리 경화강.
- 제6항에 있어서,상기 강은Al 도금층, Al-Si 도금층, Zn-Ni 도금층, Zn 도금층, Zn-Al 도금층 및 고온내산화 수지코팅층 중에서 선택되는 층이 표면에 형성되어 있는 것을 특징으로 하는 열처리 경화강.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201180073901.8A CN103842527A (zh) | 2011-09-30 | 2011-10-17 | 使用激光热处理制备具有不同强度钢产品的方法及其中所用的热淬火的钢 |
US14/343,955 US20140227553A1 (en) | 2011-09-30 | 2011-10-17 | Preparation method of steel product having different strengths using laser heat treatment, and heat hardened steel used therein |
JP2014533173A JP5898772B2 (ja) | 2011-09-30 | 2011-10-17 | レーザー熱処理を用いた異種強度を有する鋼製品の製造方法及びこれに用いられる熱処理硬化鋼 |
EP11873399.7A EP2762577B1 (en) | 2011-09-30 | 2011-10-17 | Preparation method of steel product having different strengths using laser heat treatment |
US14/683,933 US20150211086A1 (en) | 2011-09-30 | 2015-04-10 | Preparation method of steel product having different strengths using laser heat treatment, and heat hardened steel used therein |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2011-0100174 | 2011-09-30 | ||
KR1020110100174A KR101119173B1 (ko) | 2011-09-30 | 2011-09-30 | 레이저 열처리를 이용한 이종강도를 갖는 강 제품 제조 방법 및 이에 이용되는 열처리 경화강 |
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US14/683,933 Division US20150211086A1 (en) | 2011-09-30 | 2015-04-10 | Preparation method of steel product having different strengths using laser heat treatment, and heat hardened steel used therein |
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EP (1) | EP2762577B1 (ko) |
JP (1) | JP5898772B2 (ko) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016060965A (ja) * | 2014-09-16 | 2016-04-25 | チャイナ スティール コーポレーションChina Steel Corporation | 耐高温酸化の塗裝鋼板、及びそのホットスタンプ成形方法 |
US10961603B2 (en) | 2013-11-25 | 2021-03-30 | Magna International Inc. | Structural component including a tempered transition zone |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101505244B1 (ko) | 2012-07-30 | 2015-03-23 | 현대제철 주식회사 | 강 부품의 열처리 방법 및 이를 이용한 트랙링크 제조 방법 |
CN104946987A (zh) * | 2015-05-28 | 2015-09-30 | 武汉钢铁(集团)公司 | 一种高强度精轧钢筋及其生产方法 |
CN108136498A (zh) * | 2015-08-04 | 2018-06-08 | 自动工程公司 | 加强结构部件 |
KR101758517B1 (ko) * | 2015-12-23 | 2017-07-14 | 주식회사 포스코 | 강판 열처리 장치 및 방법 |
US10294552B2 (en) * | 2016-01-27 | 2019-05-21 | GM Global Technology Operations LLC | Rapidly solidified high-temperature aluminum iron silicon alloys |
US10260131B2 (en) | 2016-08-09 | 2019-04-16 | GM Global Technology Operations LLC | Forming high-strength, lightweight alloys |
DE102016219278A1 (de) * | 2016-10-05 | 2018-04-05 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Herstellung eines hochfesten Tubenteils |
KR20190078233A (ko) * | 2017-12-26 | 2019-07-04 | 주식회사 포스코 | 레이저 경화형 저탄소 강판 및 그 제조방법 |
CN111733314A (zh) * | 2019-03-25 | 2020-10-02 | 长城汽车股份有限公司 | 用于车门外板的加强方法 |
KR20230074980A (ko) | 2021-11-22 | 2023-05-31 | 주식회사 포스코 | 복수의 강도를 가지는 강판 및 그 제조방법 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0146799B1 (ko) * | 1995-05-18 | 1998-11-02 | 김만제 | 내식성이 우수한 고강도 강관형 스태빌라이저의 제조방법 |
KR20020031709A (ko) * | 2000-10-23 | 2002-05-03 | 이계안 | 국부 강화형 초고강도 고장력 강판 조성물 |
KR100765723B1 (ko) | 2006-06-07 | 2007-10-11 | 현대하이스코 주식회사 | 핫스탬핑을 이용한 자동차용 고강도 보강대의 제조방법 |
KR20090086970A (ko) | 2006-10-30 | 2009-08-14 | 아르셀러미탈 프랑스 | 코팅된 강판, 코팅된 강판의 제조 방법, 코팅된 강판의 사용 방법, 코팅된 강판으로부터 만들어진 스탬핑 블랭크, 코팅된 강판으로부터 만들어진 스탬핑된 생산물, 및 이러한 스탬핑된 생산물을 포함하는 제조 물품 |
KR20100107771A (ko) * | 2009-03-26 | 2010-10-06 | 현대제철 주식회사 | 자동차의 로어암과 그 제조방법 |
KR20110062428A (ko) | 2009-12-03 | 2011-06-10 | 현대자동차주식회사 | 자동차 부품의 충돌성능 향상을 위한 국부강화 핫스탬핑 방법 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60245730A (ja) * | 1984-05-18 | 1985-12-05 | Nippon Steel Corp | 部分硬化鋼板の製造方法 |
EP0585843A3 (en) * | 1992-08-28 | 1996-06-26 | Toyota Motor Co Ltd | High-formability steel plate with a great potential for strength enhancement by high-density energy treatment |
JPH07173528A (ja) * | 1993-12-16 | 1995-07-11 | Nippon Steel Corp | 高強度プレス成形品の製造方法 |
JPH1060522A (ja) * | 1996-08-13 | 1998-03-03 | Kobe Steel Ltd | 高密度エネルギーの照射による高強度化特性に優れた高加工性鋼板 |
JPH1060523A (ja) * | 1996-08-13 | 1998-03-03 | Kobe Steel Ltd | 高密度エネルギーの照射による鋼材の高強度化方法 |
FR2825375B1 (fr) * | 2001-05-31 | 2004-04-09 | Renault | Procede et dispositif de renforcement localise d'une tole de structure |
JP2004114912A (ja) * | 2002-09-27 | 2004-04-15 | Sumitomo Metal Ind Ltd | 耐軸圧潰特性に優れた成形部材 |
JP4845000B2 (ja) * | 2004-05-26 | 2011-12-28 | 株式会社ジーテクト | 被焼入物品の急冷装置及び被焼入物品の急冷方法 |
JP2005342776A (ja) * | 2004-06-07 | 2005-12-15 | Nippon Steel Corp | 高強度部品の製造方法および高強度部品 |
KR101010971B1 (ko) * | 2008-03-24 | 2011-01-26 | 주식회사 포스코 | 저온 열처리 특성을 가지는 성형용 강판, 그 제조방법,이를 이용한 부품의 제조방법 및 제조된 부품 |
US20090242086A1 (en) * | 2008-03-31 | 2009-10-01 | Honda Motor Co., Ltd. | Microstructural optimization of automotive structures |
JP5119475B2 (ja) * | 2008-05-14 | 2013-01-16 | 新日鐵住金株式会社 | センターピラー補強部材及びその製造方法 |
KR101008820B1 (ko) * | 2008-06-26 | 2011-01-14 | 현대제철 주식회사 | 저온충격 인성이 우수한 열처리 경화형 강판 및 그제조방법 |
CN102906284B (zh) * | 2009-11-06 | 2015-05-20 | 江森自控科技公司 | 定制强度的座椅结构部件 |
KR101033767B1 (ko) * | 2010-11-03 | 2011-05-09 | 현대하이스코 주식회사 | 열처리 경화 강판을 이용한 국부적으로 이종강도를 가지는 자동차 부품 제조방법 |
-
2011
- 2011-09-30 KR KR1020110100174A patent/KR101119173B1/ko active IP Right Grant
- 2011-10-17 CN CN201180073901.8A patent/CN103842527A/zh active Pending
- 2011-10-17 EP EP11873399.7A patent/EP2762577B1/en active Active
- 2011-10-17 JP JP2014533173A patent/JP5898772B2/ja active Active
- 2011-10-17 WO PCT/KR2011/007703 patent/WO2013047939A1/ko active Application Filing
- 2011-10-17 US US14/343,955 patent/US20140227553A1/en not_active Abandoned
-
2015
- 2015-04-10 US US14/683,933 patent/US20150211086A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR0146799B1 (ko) * | 1995-05-18 | 1998-11-02 | 김만제 | 내식성이 우수한 고강도 강관형 스태빌라이저의 제조방법 |
KR20020031709A (ko) * | 2000-10-23 | 2002-05-03 | 이계안 | 국부 강화형 초고강도 고장력 강판 조성물 |
KR100765723B1 (ko) | 2006-06-07 | 2007-10-11 | 현대하이스코 주식회사 | 핫스탬핑을 이용한 자동차용 고강도 보강대의 제조방법 |
KR20090086970A (ko) | 2006-10-30 | 2009-08-14 | 아르셀러미탈 프랑스 | 코팅된 강판, 코팅된 강판의 제조 방법, 코팅된 강판의 사용 방법, 코팅된 강판으로부터 만들어진 스탬핑 블랭크, 코팅된 강판으로부터 만들어진 스탬핑된 생산물, 및 이러한 스탬핑된 생산물을 포함하는 제조 물품 |
KR20100107771A (ko) * | 2009-03-26 | 2010-10-06 | 현대제철 주식회사 | 자동차의 로어암과 그 제조방법 |
KR20110062428A (ko) | 2009-12-03 | 2011-06-10 | 현대자동차주식회사 | 자동차 부품의 충돌성능 향상을 위한 국부강화 핫스탬핑 방법 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10961603B2 (en) | 2013-11-25 | 2021-03-30 | Magna International Inc. | Structural component including a tempered transition zone |
JP2016060965A (ja) * | 2014-09-16 | 2016-04-25 | チャイナ スティール コーポレーションChina Steel Corporation | 耐高温酸化の塗裝鋼板、及びそのホットスタンプ成形方法 |
Also Published As
Publication number | Publication date |
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EP2762577B1 (en) | 2016-04-27 |
JP2014534334A (ja) | 2014-12-18 |
EP2762577A4 (en) | 2014-09-24 |
US20150211086A1 (en) | 2015-07-30 |
EP2762577A1 (en) | 2014-08-06 |
US20140227553A1 (en) | 2014-08-14 |
KR101119173B1 (ko) | 2012-02-22 |
CN103842527A (zh) | 2014-06-04 |
JP5898772B2 (ja) | 2016-04-06 |
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