KR100475944B1 - Method for manufacturing bumper beam of vehicle - Google Patents
Method for manufacturing bumper beam of vehicle Download PDFInfo
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- KR100475944B1 KR100475944B1 KR10-2002-0019942A KR20020019942A KR100475944B1 KR 100475944 B1 KR100475944 B1 KR 100475944B1 KR 20020019942 A KR20020019942 A KR 20020019942A KR 100475944 B1 KR100475944 B1 KR 100475944B1
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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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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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
- C21D1/62—Quenching devices
- C21D1/667—Quenching devices for spray quenching
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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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
- C21D2221/00—Treating localised areas of an article
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- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
본 발명은 근적외선을 열원으로 이용하여 범퍼빔의 국부적인 요부만을 고강도화시킬 수 있도록 한 자동차용 범퍼빔의 제조 방법에 관한 것이다.The present invention relates to a method for manufacturing a bumper beam for automobiles using near-infrared rays as a heat source, so that only local portions of the bumper beams can be strengthened.
이를 위해, 본 발명은 자동차용 범퍼빔을 소정의 가열장치로 고정시키고, 범퍼빔의 국부적인 필요부분만을 가열하되, 근적외선을 발생시키는 광원으로부터 근적외선을 100%의 초기출력으로 15∼30초 동안 적정온도 1000∼1300℃에 도달될 때까지 방사하여 가열하고, 상기 적정온도 도달 후, 80%의 출력으로 1∼10초 동안 1000∼1100℃로 유지되게 가열하며, 또 다시 상기 적정온도 도달시 70%의 출력으로 1∼10초 동안 1000∼1200℃로 유지되게 가열한 후, 최단 시간내에 급랭을 하여서 달성되는 것을 특징으로 하는 자동차용 범퍼빔의 제조 방법을 제공한다.To this end, the present invention is to fix the bumper beam for automobiles with a predetermined heating device, heating only the locally necessary portion of the bumper beam, titrating near-infrared light at an initial output of 100% for 15-30 seconds from a light source generating near-infrared light. Radiate and heat until the temperature reaches 1000 to 1300 ° C, and after reaching the appropriate temperature, heat to maintain 1000 to 1100 ° C for 1 to 10 seconds at an output of 80%, and again 70% when the temperature is reached. Provided is a method for producing a bumper beam for automobiles, which is achieved by heating at a temperature of 1000 to 1200 DEG C for 1 to 10 seconds at an output of and then quenching in the shortest time.
Description
본 발명은 자동차용 범퍼빔의 제조 방법에 관한 것으로서, 더욱 상세하게는 근적외선을 열원으로 이용하여 범퍼빔의 국부적인 요부만을 고강도화시킬 수 있도록 한 자동차용 범퍼빔의 제조 방법에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a bumper beam for automobiles, and more particularly, to a method for manufacturing a bumper beam for automobiles in which only local portions of the bumper beams can be strengthened by using near infrared rays as a heat source.
통상적으로 자동차용 범퍼는 차량의 전후면 끝단에 설치되어, 충돌 및 추돌시 그 충격을 완충시켜주는 충돌안전부품으로서, 첨부한 도 1에 도시한 바와 같이, 차량의 외부로 노출되는 범퍼커버(22)와, 이 범퍼커버(22)의 내부에 위치하여 충격을 흡수해주는 에너지 압소버(24)와, 상기 에너지 압소버(24)의 후부에 위치되는 범퍼빔(12)과, 이 범퍼빔(12)의 후면 양쪽과 차체를 연결해주는 범퍼스테이로 구성되어 있다.Typically, a bumper for a vehicle is a collision safety part installed at the front and rear ends of a vehicle to cushion the impact during a collision and a collision. As illustrated in FIG. 1, the bumper cover 22 exposed to the outside of the vehicle is exposed. ), An energy absorber 24 located inside the bumper cover 22 to absorb shocks, a bumper beam 12 located at a rear of the energy absorber 24, and the bumper beam 12 It consists of a bumper stay that connects both sides of the rear body to the body.
상기 에너지 압소버의 후부에 위치되는 범퍼빔은 강도를 부여해 줄 수 있는 부분으로서, 주로 고강도강판을 프레스로 제조하거나 롤포밍(Roll forming) 방법으로 제조되고 있다.The bumper beam located at the rear of the energy absorber is a part capable of imparting strength. The bumper beam is mainly manufactured by using a high strength steel sheet by a press or by a roll forming method.
최근에는, 상기 범퍼빔을 인장강도 60∼80kgf/㎟의 고강도강으로 제조하는 추세이기는 하나, 제조공정 및 재료의 특성에 의해 그 이상의 고강도 소재를 사용하여 범퍼빔을 제조하는데는 많은 어려움이 있다.Recently, although the bumper beam is manufactured with a high strength steel having a tensile strength of 60 to 80 kgf / mm 2, there are many difficulties in manufacturing the bumper beam using a higher strength material due to the manufacturing process and the characteristics of the material.
그러나, 차량의 안전성 증대 요구에 따라 범퍼에 대한 고강도화 요구는 점차 증대되고 있어, 구조적인 보강을 위하여 첨부한 도 2에 도시한 바와 같이 내부에 보강재(26)를 삽입하는 것이 일반적인 추세에 있다.However, in accordance with the demand for increasing the safety of the vehicle, the demand for increasing the strength of the bumper is gradually increasing, and there is a general trend to insert the reinforcing material 26 therein as shown in FIG. 2 for structural reinforcement.
이러한 보강재의 삽입은 원가 및 중량의 증가를 초래하므로, 바람직한 방법은 아니다.Insertion of such stiffeners leads to an increase in cost and weight and is therefore not a preferred method.
따라서, 본 발명은 상기와 같은 점을 감안하여 발명한 것으로서, 근적외선의 특정파장의 광선을 열원으로 이용하여 범퍼빔의 국부적인 부분만을 선택적으로 고강도화시킬 수 있도록 함으로써, 기존의 보강재를 삭제할 수 있고, 그에따라 경량화를 도모함과 함께 원가 및 작업공정을 줄일 수 있도록 한 자동차용 범퍼빔의 제조 방법을 제공하는데 그 목적이 있다.Accordingly, the present invention has been invented in view of the above, and by using only a specific wavelength of near-infrared light rays as a heat source, it is possible to selectively increase only the local part of the bumper beam, thereby eliminating the existing reinforcement material. Accordingly, an object of the present invention is to provide a method for manufacturing a bumper beam for automobiles, which can reduce the cost and work process while reducing weight.
이러한 목적을 달성하기 위한 본 발명은 탄소(C) 0.08∼0.11 중량%; 망간(Mn) 1.2∼1.7 중량%; 규소(Si) 0.4∼1.0 중량%; 철(Fe) 97.19∼98.32중량%로 이루어진 자동차용 범퍼빔을 소정의 가열장치에 고정시키고, 범퍼빔의 국부적인 필요부분만을 가열하되, 근적외선을 발생시키는 광원으로부터 근적외선을 100%의 초기출력으로 15∼30초 동안 1000∼1300℃에 도달될 때까지 방사하여 가열하고, 상기 1000∼1300℃ 도달 후, 80%의 출력으로 1∼10초 동안 1000∼1100℃로 유지되게 가열하며, 또 다시 상기 1000∼1100℃ 도달시 70%의 출력으로 1∼10초 동안 1000∼1200℃로 유지되게 가열한 후, 급랭을 하여서 달성되는 것을 특징으로 하는 자동차용 범퍼빔의 제조 방법을 제공한다.The present invention for achieving this object is 0.08 to 0.11% by weight of carbon (C); Manganese (Mn) 1.2-1.7 wt%; Silicon (Si) 0.4-1.0 wt%; Fix an automobile bumper beam made of 97.19 to 98.32% by weight of iron to a predetermined heating device, and heat only locally necessary portions of the bumper beam, and generate near infrared rays at an initial output of 100% from a light source generating near infrared rays. Spin to heat until it reaches 1000 to 1300 ° C. for ˜30 seconds, and after reaching 1000 to 1300 ° C., it is heated to maintain 1000 to 1100 ° C. for 1 to 10 seconds at an output of 80%, and again the 1000 Provided is a method for producing a bumper beam for automobiles, which is achieved by heating at a temperature of 1000 to 1200 ° C. for 1 to 10 seconds with a 70% output upon reaching 1100 ° C., followed by rapid cooling.
삭제delete
바람직한 구현예로서, 상기 가열장치는 범퍼빔을 잡아주는 고정지그가 상면에 일체로 형성된 베드와; 가열 처리되는 상기 범퍼빔의 국부적인 필요부분을 가리면서 위치되어 집광판 역할을 하는 리플렉터와; 상기 리플렉터와 소정의 거리를 유지하며 배치된 근적외선 방사를 위한 가열모듈로 구성된 것을 사용하는 것이 좋다.In a preferred embodiment, the heating device includes a bed in which a fixing jig for holding a bumper beam is integrally formed on an upper surface thereof; A reflector positioned to cover a locally required portion of the bumper beam to be heat treated to serve as a light collecting plate; It is preferable to use a heating module for near-infrared radiation disposed while maintaining a predetermined distance from the reflector.
특히, 상기 급랭 공정은 가열된 부분의 균일냉각을 위하여 스프레이 퀀칭 방법을 사용하는 것을 특징으로 한다. In particular, the quenching process is characterized by using a spray quenching method for uniform cooling of the heated portion.
이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조로 상세하게 설명한다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.
본 발명의 주된 특징은 근적외선의 특정파장의 광선, 예를들면 이론적으로 3000℃까지의 최대 가열온도를 갖는 광원으로 범퍼빔의 국부적인 부분(기존에 보강재가 삽입된 부분과 일치하는 면)만을 가열하여 선택적으로 고강도화시킬 수 있도록 하는데 있다.The main feature of the present invention is that a light source having a maximum heating temperature of near-infrared rays, for example, a theoretical maximum heating temperature of 3000 ° C., heats only the local part of the bumper beam (surface coinciding with the part where the reinforcing material is inserted). To selectively increase the strength.
즉, 본 발명은 성형이 용이한 비교적 강도가 낮은 재료를 이용하여 부품을 성형한 후, 이를 적합한 강화방법을 이용해 국부적인 부분만을 강화시키는 기술을 접목한 것으로서, 금속조직학적으로 연한성질을 지닌 페라이트+펄라이트 조직을 가열 급냉을 통해 강하고 경한 특성을 지닌 마르텐사이트, 베이나이트 조직으로 변태시키는 원리를 이용한 것이다.That is, the present invention is a combination of a technique of forming a part using a relatively low strength material, which is easy to mold, and then reinforcing only a local part using a suitable reinforcing method. It uses the principle of transforming pearlite tissue into martensite and bainite tissue with strong and hard properties through heat quenching.
대개, 자동차용 범퍼빔은 탄소(C) 0.08∼0.11 중량%; 망간(Mn) 1.2∼1.7 중량%; 규소(Si) 0.4∼1.0 중량%; 철(Fe) 97.19∼98.32 중량%로 이루어져 있다.물론, 위의 성분 중에는 강조직의 기계적 특성에 영향을 주지않는 통상의 불가피한 불순물이 포함된다.Usually, automotive bumper beams comprise 0.08 to 0.11% by weight of carbon (C); Manganese (Mn) 1.2-1.7 wt%; Silicon (Si) 0.4-1.0 wt%; It consists of 97.19 to 98.32% by weight of iron. Of course, the above components include conventional inevitable impurities that do not affect the mechanical properties of the reinforcing fibers.
또한, 본 발명의 범퍼빔 제조 방법은 첨부한 도 3에 도시한 바와 같은 가열장치(10)를 사용하는 것이 바람직하고, 상기 가열장치(10)는 범퍼빔(12)을 받쳐주면서 잡아주는 클램핑 타입의 고정지그(14)가 상면 양쪽에 일체로 형성된 베드(16)와, 상기 범퍼빔(12)의 국부적인 필요부분과 소정 거리를 유지하며 위치하는 집광판 역할을 하는 투명한 리플렉터(18)와, 이 리플렉터(18)의 전면과 소정의 거리를 유지하며 배치된 가열모듈(20)로 구성되고, 특히 상기 가열모듈(20)에는 근적외선을 방사시키는 광원이 배열되어 있다.In addition, the bumper beam manufacturing method of the present invention preferably uses a heating device 10 as shown in Figure 3, the heating device 10 is clamping type to hold while supporting the bumper beam 12 A fixed jig 14 of which is integrally formed on both sides of the upper surface of the bed 16, a transparent reflector 18 serving as a light collecting plate positioned at a predetermined distance from a locally required portion of the bumper beam 12, It consists of a heating module 20 arranged to maintain a predetermined distance from the front of the reflector 18, in particular the heating module 20 is arranged a light source for emitting near infrared rays.
여기서, 본 발명에 따른 범퍼빔 제조 방법의 일실시예를 설명하면 다음과 같다.Here, an embodiment of the bumper beam manufacturing method according to the present invention will be described.
실시예Example
먼저, 범퍼빔을 상기 가열장치의 고정지그에 받쳐지게 고정시키되, 범퍼빔의 국부적인 필요부분(기존에 보강재가 삽입된 위치와 일치되는 면)만이 가열되도록 근적외선을 발생시키는 광원과 대응되는 위치로 고정시킨다.First, the bumper beam is fixed to the fixing jig of the heating apparatus, and the bumper beam is positioned in a position corresponding to the light source generating near-infrared rays so that only the locally required portion of the bumper beam (surface coinciding with the position where the reinforcement is inserted) is heated. Fix it.
물론, 상기 범퍼빔의 국부적인 필요부분의 전면에는 리플렉터가 위치된다.Of course, a reflector is located in front of the locally required portion of the bumper beam.
이렇게 가열장치에 범퍼빔을 고정시킨 다음, 광원으로부터 근적외선을 상기 범퍼빔의 국부적인 부분으로 방사하여 가열시키는 바, 근적외선을 100%의 초기출력으로 15∼30초 동안 적정온도 1000∼1300℃에 도달될 때까지 방사하여 가열하는 단계가 선행된다.After fixing the bumper beam to the heating apparatus, the near-infrared rays are radiated from the light source to the local parts of the bumper beams and heated to reach the proper temperature of 1000 to 1300 ° C. for 15 to 30 seconds at an initial output of 100%. Followed by spinning until heating.
상기 근적외선에 의한 범퍼빔의 온도를 1000∼1300℃의 범위로 가열하는 이유는 1300℃ 이상으로 상승하면 용융상태로 접어들고, 1000℃ 이하이면 변태점 이하가 되어 열처리에 의미가 없어지므로, 적정한 가열온도범위는 1000∼1300℃로 유지하는 것이 좋다. The reason for heating the temperature of the bumper beam by the near infrared rays in the range of 1000 to 1300 ° C. is that when it rises above 1300 ° C., it enters the molten state. It is good to keep the range at 1000-1300 degreeC.
특히, 상기 시간을 15∼30초로 규정한 이유는 소재의 두께마다 달리 적용할 수 있지만, 본 발명에 적용되는 범퍼빔의 두께가 1.2mm-1.4mm임을 감안하여, 변태가 용이하게 이루어지는 시간을 채택한 것이다.In particular, the reason for specifying the time to 15 to 30 seconds can be applied differently for each thickness of the material, but considering the thickness of the bumper beam applied to the present invention is 1.2mm-1.4mm, adopting the time that the transformation is easy will be.
물론, 상기 시간은 소재의 두께마다 여러번의 시험을 거쳐 달리 적용할 수 있음은 당연하다.Of course, the time can be applied differently after several tests for each thickness of the material.
다음으로, 상기 적정온도 도달 후, 80%의 출력으로 1∼10초 동안 1000∼1100℃로 유지되게 가열하는 단계를 진행시킨다.Next, after reaching the appropriate temperature, the step of heating to maintain at 1000 ~ 1100 ℃ for 1 to 10 seconds with an output of 80% proceeds.
이어서, 또 다시 상기 적정온도 도달시 70%의 출력으로 1∼10초 동안 1000∼1200℃로 유지되게 가열한 후, 마지막으로 범퍼빔을 최단시간(약 2초내외)내에 냉각모듈로 이동하여 급랭을 시키되 스프레이 퀀칭 방법을 이용하여 가열된 부분을 균일하게 냉각하는 단계를 진행시킨다.Subsequently, when the temperature is reached again, the heater is heated at 1000 to 1200 ° C. for 1 to 10 seconds with an output of 70%, and finally, the bumper beam is moved to the cooling module within the shortest time (about 2 seconds or less) and rapidly cooled. To proceed to the step of uniformly cooling the heated portion using a spray quenching method.
이렇게 출력을 순차적으로 70%까지 다운시키는 것은 100%출력을 계속 유지시키면 범퍼빔 소재의 잠열과 함께 온도가 1300℃ 이상으로 상승하는 것을 방지하기 위함이다.The output is sequentially down to 70% in order to prevent the temperature from rising above 1300 ° C with the latent heat of the bumper beam material.
이와 같은 본 발명의 방법에 의거하여 제조된 범퍼빔의 국부적인 부분에 대한 금속조직을 사진으로 촬영한 결과를 기존의 금속조직과 비교하여 첨부한 도 4a,4b에 도시하였는 바, 기존의 범퍼빔(기존에 보강재가 삽입된 부분과 일치하는 면) 금속조직은 조밀하지 못한 반면에, 본 발명의 제조 방법에 의거 제조된 범퍼빔의 금속조직은 조밀함을 알 수 있다.4A and 4B show the results of photographing the metal structure of the localized portion of the bumper beam manufactured according to the method of the present invention in comparison with the existing metal structure. While the metal structure is not dense, the metal structure of the bumper beam manufactured according to the manufacturing method of the present invention is dense.
시험예Test Example
본 발명의 제조 방법에 의거 제조된 범퍼빔과, 기존의 보강재가 삽입된 범퍼빔에 대하여 정적 압축 시험을 하였다.A static compression test was performed on the bumper beam manufactured according to the manufacturing method of the present invention and the bumper beam into which the existing reinforcing material was inserted.
그 결과는 다음의 표와 같다.The results are shown in the table below.
위의 표에서 알 수 있듯이, 본 발명의 범퍼빔은 기존의 보강재가 삽입되어 있는 비교예의 범퍼빔보다 변위량이 적어 우수한 강도를 지님을 알 수 있었고, 그 중량에서도 기존의 보강재가 삽입되어 있는 범퍼빔보다 가벼워 경량화를 실현할 수 있음을 알 수 있었다.As can be seen from the above table, the bumper beam of the present invention has a smaller displacement than the bumper beam of the comparative example in which the existing reinforcing material is inserted, and thus has an excellent strength. It turned out that it is lighter and can realize weight reduction.
결과적으로, 본 발명의 방법으로 제조된 범퍼빔을 적용하는 경우, 고강도화를 실현함과 함께 기존의 보강재가 삭제되어, 경량화를 이루는 동시에 원가를 절감할 수 있고, 또한 기존의 보강재를 삽입하여 고정시키는 용접작업등이 배제되어 공수를 절감시킬 수 있게 된다.As a result, when the bumper beam manufactured by the method of the present invention is applied, the existing reinforcement is deleted while realizing high strength, thereby reducing the cost and reducing the cost, and also inserting and fixing the existing reinforcement The welding work is eliminated and the labor can be saved.
이상에서 본 바와 같이, 본 발명에 따른 자동차용 범퍼빔의 제조 방법에 의하면, 근적외선의 특정파장의 광선을 열원으로 이용하여 범퍼빔의 국부적인 부분만을 선택적으로 고강도화시킬 수 있도록 함으로써, 기존의 보강재를 삭제할 수 있고, 그에따라 경량화를 도모할 수 있으며, 또한 원가 및 작업공정을 줄일 수 있는 장점을 제공한다.As described above, according to the method for manufacturing a bumper beam for automobiles according to the present invention, by using only a specific wavelength of near-infrared light rays as a heat source, it is possible to selectively increase only the local portion of the bumper beam, thereby providing an existing reinforcement material. It can be deleted, and accordingly reduced in weight, and also offers the advantage of reducing the cost and work process.
도 1은 통상적인 자동차용 범퍼의 구성을 보여주는 분리 사시도,1 is an exploded perspective view showing the configuration of a conventional automobile bumper;
도 2는 통상적인 자동차용 범퍼의 범퍼빔을 나타내는 분리 사시도,2 is an exploded perspective view illustrating a bumper beam of a conventional vehicle bumper;
도 3은 본 발명에 따른 자동차용 범퍼빔의 제조 방법에 적용될 수 있는 가열장치의 실시예를 나타내는 정면도,3 is a front view showing an embodiment of a heating apparatus that can be applied to the method for manufacturing a bumper beam for automobiles according to the present invention;
도 4a,4b는 본 발명에 따른 자동차용 범퍼빔의 제조 방법에 의하여 국부적으로 고강도화된 범퍼빔의 금속조직과, 기존의 범퍼빔의 금속조직을 나타내는 사진.Figure 4a, 4b is a photograph showing the metal structure of the bumper beam locally localized by the method of manufacturing a bumper beam for automobiles according to the present invention, and the metal structure of the existing bumper beam.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
10 : 가열장치 12 : 범퍼빔10: heating device 12: bumper beam
14 : 고정지그 16 : 베드14: fixing jig 16: bed
18 : 리플렉터 20 : 가열모듈18: reflector 20: heating module
22 : 범퍼 커버 24 : 에너지 압소버22 bumper cover 24 energy absorber
26 : 보강재26: reinforcement
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0019942A KR100475944B1 (en) | 2002-04-12 | 2002-04-12 | Method for manufacturing bumper beam of vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0019942A KR100475944B1 (en) | 2002-04-12 | 2002-04-12 | Method for manufacturing bumper beam of vehicle |
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| Publication Number | Publication Date |
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| KR20030081619A KR20030081619A (en) | 2003-10-22 |
| KR100475944B1 true KR100475944B1 (en) | 2005-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR100765723B1 (en) * | 2006-06-07 | 2007-10-11 | 현대하이스코 주식회사 | Manufacturing method of high strength reinforcement for motors using hot stamping |
| CN116313656B (en) * | 2023-04-04 | 2024-01-30 | 东莞市富瑞电子科技有限公司 | Fuse processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3972744A (en) * | 1974-02-11 | 1976-08-03 | Houdaille Industries, Inc. | Method of and means for making lightweight, low cost impact resistant bumpers |
| US4010969A (en) * | 1973-05-17 | 1977-03-08 | Houdaille Industries, Inc. | Impact resistant lightweight, low cost automobile bumpers and method of making same |
| JPH01162723A (en) * | 1987-12-18 | 1989-06-27 | Kobe Steel Ltd | Production of high-strength hot rolled thin steel sheet having excellent stretch-flanging property |
| US6050049A (en) * | 1997-09-29 | 2000-04-18 | Trim Trends, Inc. | Selectively heat treated side intrusion beams and method for making the same |
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2002
- 2002-04-12 KR KR10-2002-0019942A patent/KR100475944B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010969A (en) * | 1973-05-17 | 1977-03-08 | Houdaille Industries, Inc. | Impact resistant lightweight, low cost automobile bumpers and method of making same |
| US3972744A (en) * | 1974-02-11 | 1976-08-03 | Houdaille Industries, Inc. | Method of and means for making lightweight, low cost impact resistant bumpers |
| JPH01162723A (en) * | 1987-12-18 | 1989-06-27 | Kobe Steel Ltd | Production of high-strength hot rolled thin steel sheet having excellent stretch-flanging property |
| US6050049A (en) * | 1997-09-29 | 2000-04-18 | Trim Trends, Inc. | Selectively heat treated side intrusion beams and method for making the same |
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| KR20030081619A (en) | 2003-10-22 |
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