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KR20150117585A - Manufacturing method center pillar employing different kind materials tailored welded blank and hot stamping, and the center pillar manufactured thereby - Google Patents

Manufacturing method center pillar employing different kind materials tailored welded blank and hot stamping, and the center pillar manufactured thereby Download PDF

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Publication number
KR20150117585A
KR20150117585A KR1020140092117A KR20140092117A KR20150117585A KR 20150117585 A KR20150117585 A KR 20150117585A KR 1020140092117 A KR1020140092117 A KR 1020140092117A KR 20140092117 A KR20140092117 A KR 20140092117A KR 20150117585 A KR20150117585 A KR 20150117585A
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center pillar
manufacturing
plate
hot stamping
present
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Korean (ko)
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원광우
서종덕
임창용
김동권
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주식회사 신영
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
    • 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
    • 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
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/04—Door pillars ; windshield pillars

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Manufacturing & Machinery (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

본 발명에 따른 센터필러 제조방법은, 먼저 충격에 저항하는 소재로 이루어진 제1 판재와, 제1 판재와 종류가 상이하게 충격을 흡수하는 소재로 이루어진 제2 판재를 마련한다. 이어서, 제1,2 판재를 맞대어 맞댄 부위를 용접한 후, 용접된 제1,2 판재를 센터필러의 상부와 하부를 각각 구성하는 제1,2 블랭크로 재단한다. 이어서, 용접된 제1,2 블랭크를 가열한 후 금형에 공급해서 센터필러로 성형하며 성형된 센터필러를 금형 내에서 급냉시킨다.In the center pillar manufacturing method according to the present invention, first, a first plate made of a material resistant to impact and a second plate made of a material that absorbs shock different from the first plate are provided. Then, the first and second plates are welded to each other, and then the welded first and second plates are cut into first and second blanks constituting the upper and lower portions of the center pillar, respectively. Subsequently, the first and second welded blanks are heated and then supplied to a mold to form a center pillar, and the formed center pillar is quenched in the mold.

Description

이종소재 ＴＷＢ 및 핫스탬핑을 적용한 센터필러 제조방법, 및 이에 의해 제조된 센터필러{Manufacturing method center pillar employing different kind materials tailored welded blank and hot stamping, and the center pillar manufactured thereby}BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a center filler manufacturing method using a different material TWB and hot stamping, and a center filler manufactured thereby,

본 발명은 차량의 좌우 중앙부에 설치되어 지붕을 받치고 도어를 유지하는 센터필러와 그 제조방법에 관련된 것이다.The present invention relates to a center pillar installed at left and right central portions of a vehicle to support a roof and hold a door, and a manufacturing method thereof.

센터필러는 차량의 좌우 중앙부에 설치되어 지붕을 받치고 도어를 유지하는 차체 부품이다. 그런데, 종래의 센터필러는 고강성인 하나의 소재만을 이용하여 제조되기 때문에, 강한 충격에 저항하는 능력은 좋으나 취성이 약하다는 단점이 있다. 이로 인해, 센터필러는 충돌부재와 충돌 후 파단될 수 있는데, 이는 충돌부재가 센터필러를 파단시킨 후 운전석으로 돌진하여 운전자 상해를 발생시키는 원인이 되고 있다. 이러한 문제를 방지하고자, 센터필러에 보강재들을 덧대는 경우 경량화에 불리하게 된다.The center pillar is a body part that is installed at the left and right center of the vehicle to support the roof and keep the door. However, since the conventional center pillar is manufactured using only one material having high strength, it has a disadvantage in that it is resistant to strong impact but is fragile. Accordingly, the center pillar can be broken after collision with the collision member, which causes the collision member to rupture to the driver's seat after breaking the center pillar, thereby causing driver's injury. In order to prevent such a problem, when a reinforcing material is applied to the center pillar, it is disadvantageous in weight reduction.

본 발명의 과제는 충돌 흡수능을 향상시키고 경량화를 도모할 수 있는 센터필러 제조방법 및 이에 의해 제조된 센터필러를 제공함에 있다.A further object of the present invention is to provide a method of manufacturing a center pillar capable of improving the impact absorbing ability and reducing the weight, and a center pillar manufactured by the method.

상기의 과제를 달성하기 위한 본 발명에 따른 센터필러 제조방법은, 먼저 충격에 저항하는 소재로 이루어진 제1 판재와, 제1 판재와 종류가 상이하게 충격을 흡수하는 소재로 이루어진 제2 판재를 마련한다. 이어서, 제1,2 판재를 맞대어 맞댄 부위를 용접한 후, 용접된 제1,2 판재를 센터필러의 상부와 하부를 각각 구성하는 제1,2 블랭크로 재단한다. 이어서, 용접된 제1,2 블랭크를 가열한 후 금형에 공급해서 센터필러로 성형하며 성형된 센터필러를 금형 내에서 급냉시킨다.According to an aspect of the present invention, there is provided a method of manufacturing a center pillar, comprising: preparing a first plate made of a material resistant to impact, and a second plate made of a material different from the first plate do. Then, the first and second plates are welded to each other, and then the welded first and second plates are cut into first and second blanks constituting the upper and lower portions of the center pillar, respectively. Subsequently, the first and second welded blanks are heated and then supplied to a mold to form a center pillar, and the formed center pillar is quenched in the mold.

그리고, 본 발명에 따른 센터필러는 전술한 제조방법에 의해 제조된다.The center pillar according to the present invention is manufactured by the above-described manufacturing method.

본 발명에 따른 센터필러는 충돌 흡수능을 향상시켜 운전자 상해를 방지할 수 있다. 또한, 본 발명에 따른 센터필러는 보강재들이 삭제된 구조로 이루어지므로, 경량화를 도모할 수 있다. 따라서, 차체 경량화에 기여할 수 있다The center pillar according to the present invention can improve the collision absorbing ability and prevent driver's injury. In addition, since the center pillar according to the present invention has a structure in which the reinforcing members are omitted, the weight can be reduced. Therefore, it can contribute to weight reduction of the vehicle body

도 1은 본 발명의 일 실시예에 따른 센터필러 제조방법에 대한 순서도이다.
도 2 내지 도 4는 도 1의 제조방법에 의해 센터필러를 제조하는 과정을 설명하기 위한 도면이다.
도 5는 도 4에 있어서, 센터필러를 발췌하여 도시한 도면이다.1 is a flowchart illustrating a method of manufacturing a center pillar according to an embodiment of the present invention.
FIGS. 2 to 4 are views for explaining the process of manufacturing the center pillar according to the manufacturing method of FIG. 1. FIG.
Fig. 5 is a view showing the center pillar extracted from Fig.

본 발명에 대해 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. 여기서, 동일한 구성에 대해서는 동일부호를 사용하며, 반복되는 설명, 본 발명의 요지를 불필요하게 흐릴 수 있는 공지 기능 및 구성에 대한 상세한 설명은 생략한다. 본 발명의 실시형태는 당업계에서 평균적인 지식을 가진 자에게 본 발명을 보다 완전하게 설명하기 위해서 제공되는 것이다. 따라서, 도면에서의 요소들의 형상 및 크기 등은 보다 명확한 설명을 위해 과장될 수 있다.The present invention will now be described in detail with reference to the accompanying drawings. Here, the same reference numerals are used for the same components, and a detailed description of known functions and configurations that may unnecessarily obscure the gist of the present invention will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings and the like can be exaggerated for clarity.

도 1은 본 발명의 일 실시예에 따른 센터필러 제조방법에 대한 순서도이다. 도 2 내지 도 4는 도 1의 제조방법에 의해 센터필러를 제조하는 과정을 설명하기 위한 도면이다.1 is a flowchart illustrating a method of manufacturing a center pillar according to an embodiment of the present invention. FIGS. 2 to 4 are views for explaining the process of manufacturing the center pillar according to the manufacturing method of FIG. 1. FIG.

먼저, 도 1을 참조하면, 본 발명의 일 실시예에 따른 센터필러 제조방법은, 이종소재의 제1,2 판재를 마련하는 단계(S110)와, 제1,2 판재를 맞대어 용접한 후 제1,2 블랭크로 재단하는 단계(S120), 및 재단된 제1,2 블랭크를 가열한 후 금형에 공급하고 급냉해서 센터필러로 가공하는 단계(S130)를 포함한다.Referring to FIG. 1, a method of manufacturing a center pillar according to an embodiment of the present invention includes a step S110 of providing first and second plates of dissimilar materials, a step S110 of welding the first and second plates together, (S120) cutting the first and second blanks, heating the first and second blanks, supplying the cut first and second blanks to the mold, and cooling the center blank to a center filler (S130).

도 2 내지 도 4를 참조하여, 본 발명의 일 실시예에 따른 센터필러 제조방법에 대해 더욱 상세하게 설명하면 다음과 같다.2 to 4, a method of manufacturing a center pillar according to an embodiment of the present invention will be described in detail as follows.

S110 단계에서는, 도 2에 도시된 바와 같이, 제1 판재(11)와, 제1 판재(11)와 종류가 상이한 제2 판재(12)를 마련한다. 제1 판재(11)는 충격에 저항하는 소재로 이루어진다. 예컨대, 제1 판재(11)는 SABC1470 소재로 이루어질 수 있다. SABC1470 소재는 핫스탬핑 이전에는 대략 550MPa의 인장강도, 대략 30%의 연신율을 갖는다. SABC1470 소재는 핫스탬핑 이후에는 대략 1,470MPa의 인장강도, 대략 8%의 연신율을 갖는다. SABC1470 소재는 강판의 양면에 각각 Al-Si(알루미늄-실리콘) 코팅층이 형성된 구성을 갖는다.In step S110, the first plate 11 and the second plate 12, which are different from the first plate 11, are provided as shown in Fig. The first plate 11 is made of a material resistant to impact. For example, the first plate 11 may be made of SABC 1470 material. The SABC 1470 material has a tensile strength of approximately 550 MPa and an elongation of approximately 30% prior to hot stamping. The SABC1470 material has a tensile strength of approximately 1,470 MPa, an elongation of approximately 8% after hot stamping. The SABC1470 material has a structure in which an Al-Si (aluminum-silicon) coating layer is formed on both sides of the steel sheet.

제2 판재(12)는 충격을 흡수하는 소재로 이루어진다. 제2 판재(12)는 SGAFC590 소재로 이루어질 수 있다. SGAFC590 소재는 핫스탬핑 이전에는 대략 585MPa의 인장강도, 대략 30%의 연신율을 갖는다. SGAFC590 소재는 핫스탬핑 이후에는 대략 990MPa의 인장강도, 대략 9%의 연신율을 갖는다. SGAFC590 소재는 강판의 양면에 각각 Zn-Fe(아연-철) 코팅층이 형성된 구성을 갖는다.The second plate 12 is made of a material that absorbs impact. The second plate 12 may be made of SGAFC590. The SGAFC590 material has a tensile strength of approximately 585 MPa and an elongation of approximately 30% prior to hot stamping. The SGAFC590 material has a tensile strength of approximately 990 MPa and an elongation of approximately 9% after hot stamping. The SGAFC590 material has a Zn-Fe (zinc-iron) coating layer formed on both sides of the steel sheet.

제2 판재(12)는 제1 판재(11)보다 두께가 두껍게 마련될 수 있다. 예컨대, 제1 판재(11)는 대략 1.2mm 두께로 마련된다면, 제2 판재(12)는 대략 1.5mm ~ 1.7mm 두께로 마련될 수 있다. 따라서, 센터필러(30, 도 4 및 도 5 참조)는 제1 판재(11)로 가공된 상부(31)가 대략 1.2mm 두께를 갖고, 제2 판재(12)로 가공된 하부(32)가 대략 1.5mm ~ 1.7mm 두께를 갖도록 구성될 수 있다. 여기서, "대략"이란 해당 수치가 허용 오차의 범위 내에 들어 있는 경우를 의미한다.The second plate member 12 may be thicker than the first plate member 11. For example, if the first plate 11 is provided with a thickness of approximately 1.2 mm, the second plate 12 may be provided with a thickness of approximately 1.5 mm to 1.7 mm. 4 and 5) has a lower portion 32 formed by the first plate 11 and a lower portion 32 formed by the second plate 12 And may have a thickness of approximately 1.5 mm to 1.7 mm. Here, "roughly" means a case where the numerical value is within the tolerance range.

S120 단계에서는, 도 3에 도시된 바와 같이, 제1,2 판재(11)(12)를 맞대어 맞댄 부위를 용접한다. 이때, 제1,2 판재(11)(12)를 레이저 용접이나 마찰교반 용접 등으로 용접할 수 있다. 이후, 용접된 제1,2 판재(11)(12)를 센터필러(30)의 상부(31)와 하부(32)를 각각 구성하는 제1,2 블랭크(21)(22)로 재단한다. 즉, 제1,2 블랭크(21)(22)는 TWB(Tailor Welded Blanks) 공법에 의해 가공될 수 있다. 이때, 제1,2 블랭크(21)(22)는 도 5에 도시된 바와 같이, 센터필러(30)가 대략 1118mm 길이(TD)를 가지며, 하단으로부터 상부(31)와 하부(32)의 경계(TWB 용접라인, WL)까지 대략 430mm ~ 440mm 길이(LD)를 갖도록 재단될 수 있다.In step S120, as shown in Fig. 3, the portions of the first and second plates 11, 12 are butted against each other. At this time, the first and second plates 11 and 12 can be welded by laser welding, friction stir welding, or the like. The welded first and second plates 11 and 12 are then cut into first and second blanks 21 and 22 which respectively constitute an upper portion 31 and a lower portion 32 of the center pillar 30. That is, the first and second blanks 21 and 22 can be processed by a TWB (Tailor Welded Blanks) method. 5, the center pillar 30 has a length of approximately 1118 mm (TD), and the first and second blanks 21 and 22 are formed such that the boundary between the upper portion 31 and the lower portion 32 (LD) of approximately 430 mm to 440 mm to the welding line (TWB welding line, WL).

S130 단계에서는, 도 4에 도시된 바와 같이, 재단된 제1,2 블랭크(21)(22)를 가열한다. 이때, 재단된 제1,2 블랭크(21)(22)를 가열로(100)에서 대략 930℃로 5분간 가열한다. 이후, 가열된 제1,2 블랭크(21)(22)를 금형(200)으로 공급한다. 이때, 금형(200)의 냉각 채널(210)로 대략 20℃의 냉각수를 공급한 상태로 유지할 수 있다. 이후, 금형(200)에 의해 제1,2 블랭크(21)(22)를 센터필러(30)로 성형하며, 성형된 센터필러(30)를 금형(200) 내에서 급냉시킨다. 이때, 센터필러(30)의 성형은 2초 이내로 완료되고, 센터필러(30)는 20초간 급냉될 수 있다. 즉, 센터필러(30)는 핫 스탬핑(Hot Stamping) 공정에 의해 가공될 수 있다.In step S130, as shown in Fig. 4, the first and second cuts 21 and 22 are heated. At this time, the cut first and second blanks 21 and 22 are heated in the heating furnace 100 at approximately 930 DEG C for 5 minutes. Then, the heated first and second blanks (21) and (22) are supplied to the mold (200). At this time, cooling water of about 20 ° C can be supplied to the cooling channel 210 of the mold 200. Thereafter, the first and second blanks 21 and 22 are formed into the center pillar 30 by the mold 200, and the formed center pillar 30 is rapidly cooled in the mold 200. At this time, the molding of the center pillar 30 is completed within 2 seconds, and the center pillar 30 can be quenched for 20 seconds. That is, the center pillar 30 can be processed by a hot stamping process.

센터필러(30)는 핫 스탬핑 공정을 거쳐 가공되면, 이종소재 및 이종두께를 갖는 상부(31)와 하부(32)의 각 인장강도가 더 증가될 수 있다. 이에 따라, 센터필러(30)는 상부(31)가 더욱 큰 인장강도를 갖고 충격에 저항하고, 하부(32)가 상부(31)보다 낮은 인장강도를 갖고 두껍게 이루어져 충격을 흡수할 수 있는 구조로 이루어질 수 있다.When the center pillar 30 is processed through a hot stamping process, tensile strengths of the upper portion 31 and the lower portion 32 having different materials and different thicknesses can be further increased. The center pillar 30 has a structure in which the upper portion 31 has a greater tensile strength and is resistant to impact and the lower portion 32 has a tensile strength lower than that of the upper portion 31 to be thick Lt; / RTI >

그리고, 센터필러(30)는 하단으로부터 TWB 용접라인(WL)까지 하부(32) 길이(LD)가 대략 430mm ~ 440mm인 구조를 갖는다. 이에 따라, 센터필러(30)는 충돌시 하부에서 변형이 가장 작고 충돌 흡수 에너지가 가장 크게 된다. 따라서, 센터필러(30)의 파단에 의한 운전자 상해를 방지할 수 있다. 또한, 센터필러(30)를 보강하기 위한 보강재들을 삭제할 수 있으므로, 고강성인 하나의 소재만으로 가공된 센터필러에 비해 경량화에 유리할 수 있다.The center pillar 30 has a structure in which the length (LD) of the lower portion 32 from the lower end to the TWB welding line WL is approximately 430 mm to 440 mm. Accordingly, the center pillar 30 has the smallest deformation at the bottom and the greatest impact absorption energy at the time of impact. Therefore, it is possible to prevent driver's injury due to the breakage of the center pillar 30. In addition, since the reinforcing materials for reinforcing the center pillar 30 can be eliminated, it can be advantageous in weight reduction compared with the center pillar fabricated from only one material having high strength.

이러한 효과는 본 출원인이 본 발명의 실시예에 따른 센터필러를 비교 예에 따른 센터필러와 비교 시험한 결과를 통해 확인해 볼 수 있었다. 여기서, 본 발명의 실시예에 따른 센터필러는 전술한 제조방법에 의해 상부가 1.2mm 두께의 SABC1470 소재로 이루어지고, 하부가 1.4mm 두께의 SGAFC590 소재로 이루어지며, 하단으로부터 TWB 용접라인까지 하부 길이가 대략 436mm인 구조로 제조된 것이다. 비교 예에 따른 센터필러는 1.2mm 두께의 SABC1470 소재로 핫 스탬핑 공정에 의해 제조된 것이다.These effects can be confirmed by the applicant comparing the center pillar according to the embodiment of the present invention with the center pillar according to the comparative example. Here, the center pillar according to the embodiment of the present invention is made of SABC 1470 material having an upper portion of 1.2 mm in thickness by the above-described manufacturing method, SGAFC 590 material having a lower portion of 1.4 mm in thickness, Is approximately 436 mm. The center filler according to the comparative example was manufactured by a hot stamping process with SABC 1470 material having a thickness of 1.2 mm.

먼저, 본 발명의 실시예에 따른 센터필러와 비교 예에 따른 센터필러에 대한 충돌 성능 비교를 위해 차체 측면 충돌을 모사한 동하중 시험을 실시하였다. 동하중 시험 조건은 400kg의 추를 688mm 높이에서 자유낙하 시켰으며, 이때 충돌 위치는 센터필러의 하단으로부터 299mm 지점이다.First, for the comparison of the impact performance between the center pillar according to the embodiment of the present invention and the center pillar according to the comparative example, a dynamic load test simulating the side collision of the vehicle body was performed. The dynamic load test condition was that a weight of 400 kg was freely dropped from a height of 688 mm, and the collision position was 299 mm from the bottom of the center pillar.

충돌 에너지 흡수율을 비교해 보면, 본 발명의 실시예에 따른 센터필러는 비교 예에 따른 센터필러에 비해 296J이 상승하였다. 이로부터 충돌 에너지 흡수능이 10% 향상되었음을 확인해볼 수 있었다.Comparing the impact energy absorption rate, the center pillar according to the embodiment of the present invention rises by 296J as compared with the center pillar according to the comparative example. From this, it can be confirmed that the collision energy absorbing ability is improved by 10%.

그리고, 본 발명의 실시예에 따른 센터필러와 비교 예에 따른 센터필러에 대한 동하중 시험 이후의 상태를 비교해보면, 비교 예에 따른 센터필러는 충돌 부위가 찢어졌지만, 본 발명의 일 실시예에 따른 센터필러는 양호한 상태를 나타내었다.When the center pillar according to the embodiment of the present invention and the center pillar according to the comparative example are compared after the dynamic load test, the center pillar according to the comparative example is torn at the collision part. According to the embodiment of the present invention The center filler showed a good state.

또한, 본 발명의 실시예에 따른 센터필러와 비교 예에 따른 센터필러에 대한 무게 측정 결과, 비교 예에 따른 센터필러는 4.409kg으로 측정되고, 본 발명에 따른 센터필러는 3.564kg으로 측정되는 바, 경량화가 19.16% 향상되었다.As a result of the weight measurement for the center pillar according to the embodiment of the present invention and the center pillar according to the comparative example, the center pillar according to the comparative example was measured to be 4.409 kg, and the center pillar according to the present invention was measured to be 3.564 kg. , And lightweighting was improved by 19.16%.

본 발명은 첨부된 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 당해 기술분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 수 있을 것이다. 따라서, 본 발명의 진정한 보호 범위는 첨부된 청구 범위에 의해서만 정해져야 할 것이다. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation and that those skilled in the art will recognize that various modifications and equivalent arrangements may be made therein. It will be possible. Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

11..제1 판재 12..제2 판재
21..제1 브랭크 22..제2 블랭크
30..센터필러11 .. first plate 12 .. second plate
21 .. first blank 22 .. second blank
30. Center filler

Claims (4)

충격에 저항하는 소재로 이루어진 제1 판재와, 상기 제1 판재와 종류가 상이하게 충격을 흡수하는 소재로 이루어진 제2 판재를 마련하는 단계;
상기 제1,2 판재를 맞대어 맞댄 부위를 용접한 후, 용접된 제1,2 판재를 센터필러의 상부와 하부를 각각 구성하는 제1,2 블랭크로 재단하는 단계; 및
상기 재단된 제1,2 블랭크를 가열한 후 금형에 공급해서 센터필러로 성형하며 성형된 센터필러를 상기 금형 내에서 급냉시키는 단계;
를 포함하는 센터필러 제조방법.
Providing a first plate made of a material resistant to impact and a second plate made of a material that absorbs shock differently from the first plate;
Cutting the welded first and second plates into first and second blanks constituting an upper portion and a lower portion of the center pillar, respectively; And
Heating the first and second cut blanks, supplying the cut blanks to a mold to form a center pillar, and rapidly cooling the formed center pillar in the mold;
≪ / RTI >
제1항에 있어서,
상기 제1 판재는 SABC1470 소재로 이루어지며,
상기 제2 판재는 SGAFC590 소재로 이루어진 것을 특징으로 하는 센터필러 제조방법.
The method according to claim 1,
The first plate is made of SABC 1470 material,
Wherein the second plate is made of SGAFC590 material.
제2항에 있어서,
상기 제2 판재는 상기 제1 판재보다 두께가 두꺼운 것을 특징으로 하는 센터필러 제조방법.
3. The method of claim 2,
Wherein the second plate member is thicker than the first plate member.
제1항 내지 제3항 중 어느 하나의 항에 기재된 제조방법에 의해 제조된 센터필러. A center pillar manufactured by the manufacturing method according to any one of claims 1 to 3.
KR1020140092117A 2014-04-10 2014-07-21 Manufacturing method center pillar employing different kind materials tailored welded blank and hot stamping, and the center pillar manufactured thereby Ceased KR20150117585A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107913939A (en) * 2016-10-05 2018-04-17 福特全球技术公司 Utilize the method for the column reinforcing member of common die manufacture different editions
EP4043115A1 (en) * 2021-02-12 2022-08-17 Volkswagen Ag Process for the production of a press-hardened sheet-metal moulding, and press-hardened sheet-metal moulding produced by this process and having different properties in different areas
KR20230081456A (en) * 2021-11-30 2023-06-07 현대제철 주식회사 Method of manufacturing welding blank and method of manufacturing hot stamping component
KR20250046394A (en) 2023-09-26 2025-04-03 현대자동차주식회사 Manufacturing method center pillar with composite, and the center pillar manufactured thereby

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107913939A (en) * 2016-10-05 2018-04-17 福特全球技术公司 Utilize the method for the column reinforcing member of common die manufacture different editions
EP4043115A1 (en) * 2021-02-12 2022-08-17 Volkswagen Ag Process for the production of a press-hardened sheet-metal moulding, and press-hardened sheet-metal moulding produced by this process and having different properties in different areas
KR20230081456A (en) * 2021-11-30 2023-06-07 현대제철 주식회사 Method of manufacturing welding blank and method of manufacturing hot stamping component
KR20250046394A (en) 2023-09-26 2025-04-03 현대자동차주식회사 Manufacturing method center pillar with composite, and the center pillar manufactured thereby

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