KR19990076461A - Connection part structure of deformed bar for concrete reinforcement and processing method - Google Patents
Connection part structure of deformed bar for concrete reinforcement and processing method Download PDFInfo
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- KR19990076461A KR19990076461A KR1019980014746A KR19980014746A KR19990076461A KR 19990076461 A KR19990076461 A KR 19990076461A KR 1019980014746 A KR1019980014746 A KR 1019980014746A KR 19980014746 A KR19980014746 A KR 19980014746A KR 19990076461 A KR19990076461 A KR 19990076461A
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- forming
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/163—Rolling or cold-forming of concrete reinforcement bars or wire ; Rolls therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/03—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance with indentations, projections, ribs, or the like, for augmenting the adherence to the concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Forging (AREA)
Abstract
연결부의 철근 조직을 파괴시키지 않고 가공할 수 있도록 하여 이의 연결부에 대한 기계적 강도를 향상시키고, 가공이 용이하여 가공비용을 크게 절감시킬 있는 콘크리트 보강용 이형봉강의 연결부 구조 및 그 연결부의 가공방법을 제공할 목적으로Provides the connection structure of the deformed bar for concrete reinforcement and the processing method of the connecting rod which can be processed without destroying the reinforcing bar structure of the connecting part, thereby improving the mechanical strength of the connecting part and greatly reducing the processing cost due to the easy processing. For the purpose of
2개의 콘크리트 보강용 이형봉강을 상호 길이방향으로 연결하기 위하여 이들 단부에 연결부를 형성함에 있어서, 이 연결부의 외주면에 돌출 형성되는 리브에 숫나사부를 형성하여 이루어지는 콘크리트 보강용 이형봉강의 연결부 구조를 제공하고,In forming connecting portions at these ends to connect two concrete reinforcing bars in the longitudinal direction to each other, providing a connection structure of a reinforcing bar for concrete reinforcement formed by forming a male thread on a rib protruding from the outer circumferential surface of the connecting portion. ,
상기와 같은 연결부를 가공하기 위하여, 연결부를 상기 원주형 리브와 횡방향 리브를 2개 이상의 편이나 로울러로 이루어진 상온 금형에 의하여 연결부의 단부를 성형하는 제 1공정과; 상기 제 1공정에서 상온 성형된 연결부의 외주면에 전조작업으로 숫나사부를 성형하는 제 2공정; 으로 이루어지는 콘크리트 보강용 이형봉강의 연결부 가공방법을 제공한다.A first step of forming an end portion of the connecting portion by a normal temperature mold comprising two or more pieces or rollers of the columnar rib and the lateral rib in order to process the connecting portion as described above; A second step of forming a male screw part by a rolling operation on an outer circumferential surface of the connecting part formed at room temperature in the first step; It provides a connection part processing method of the release bar for concrete reinforcement.
Description
본 발명은 건설, 토목 현장에서 시공물의 골격을 형성하는 콘크리트 보강용 이형봉강의 연결부 구조와 그 연결부의 가공방법에 관한 것이다.The present invention relates to a connection part structure of a deformed bar for reinforcing concrete to form a skeleton of a construction object in construction and civil engineering, and a processing method of the connection part.
예컨대, 건설 및 토목 현장에서는 콘크리트 보강용 이형봉강을 이용하여 기본 골격을 세운 후에 콘크리트를 타설 양생시키는 과정으로 시공물을 건축하게 된다.For example, in the construction and civil engineering site, the construction of the construction by the process of pouring concrete after erecting the basic skeleton by using the reinforcing bar for concrete reinforcement.
그리고 상기 콘크리트 보강용 이형봉강은 제조업체에서 소정의 길이로 절단되어 공급되기 때문에 시공물의 크기에 따라 콘크리트 보강용 이형봉강을 절단하거나 상호 연결하여 요구하는 길이로 만들어 사용하게 되는데, 본 발명은 콘크리트 보강용 이형봉강을 길이방향으로 연결하는 것에 관한 것이다.And since the deformed bar for concrete reinforcement is cut and supplied to a predetermined length by the manufacturer, the deformed bar for concrete reinforcement is cut or interconnected according to the size of the construction to be used to make the required length. It relates to connecting longitudinal release bars in the longitudinal direction.
즉, 콘크리트 보강용 이형봉강을 길이방향으로 연결함에 있어서는 여러 가지 방법이 알려져 있는데, 그 대표적인 연결방법을 살펴보면 다음과 같다.In other words, there are a number of known methods for connecting the reinforcing bars for concrete reinforcement in the longitudinal direction.
먼저, 연결하고자 하는 콘크리트 보강용 이형봉강을 맞대어 놓고 용접기를 이용하여 그 연결부위를 용융온도까지 가열하여 융착시키는 가스 압접법과,First, a gas welding method in which a release bar for reinforcing concrete to be connected to each other is opposed to each other, and the welding portion is heated and welded to a melting temperature using a welding machine;
연결하고자 하는 콘크리트 보강용 이형봉강의 연결부위에 파이프 형상의 슬리이브를 끼워놓고 이의 슬리이브를 가압하여 콘크리트 보강용 이형봉강에 압착시키는 방법과,Inserting a pipe-shaped sleeve into the connection part of the reinforcing bar for concrete reinforcement to be connected and pressing the sleeve to press the sleeve to compress the reinforcing bar for concrete reinforcement;
연결하고자 하는 콘크리트 보강용 이형봉강을 겹쳐 놓고 슬리이브를 끼운후에 철근과 콘크리트 보강용 이형봉강 사이에 쐐기를 박아 연결하는 방법과,Overlapping the reinforcing bar for concrete reinforcement to be connected and inserting the sleeve, and connecting the wedge between the reinforcing bar and the reinforcing bar for concrete reinforcement,
연결하고자 하는 부위에 슬리이브를 끼워놓고 콘크리트 보강용 이형봉강과 슬리이브 사이에 화학약품(레진)을 투입하는 화학약품에 의한 방법 등이 알려져 있다.A method by chemically inserting a sleeve into a portion to be connected and injecting a chemical (resin) between a release bar for concrete reinforcement and the sleeve is known.
그러나 이들 방법은 공통적으로 연결부위의 기계적 강도가 기준치에 못미치는 등 연결부위에 대한 신뢰성이 저하되고, 연결작업이 어려우며, 비용이 크게 상승된다는 문제점을 내포하고 있다.However, these methods have a problem in that the reliability of the connection is degraded, the connection work is difficult, and the cost is greatly increased, such that the mechanical strength of the connection is less than the standard value.
이에 따라 최근에는 콘크리트 보강용 이형봉강의 양 선단 연결부에 나사부를 형성하여 내경부에 암나사가 형성된 슬리이브의 체결하여 연결하는 방법이 널리 이용되고 있다.Accordingly, in recent years, a screw part is formed at both ends of the reinforcing bar for concrete reinforcement, and a method of fastening and connecting a sleeve having a female thread in the inner diameter part is widely used.
그러나 상기와 같이 콘크리트 보강용 이형봉강의 연결부에 나사부를 형성함에 있어서, 종래에는 열간 또는 냉간 및 온간상태에서 업셋팅한 후, 이 부위의 외주면에 절삭가공 등에 의해 나사부를 형성하는 것이 일반적이었다.However, in the formation of the screw portion in the connecting portion of the reinforcing bar for concrete reinforcement as described above, in the past, it was common to form the screw portion on the outer circumferential surface of this portion by cutting or the like after upsetting in a hot or cold and warm state.
그러나 상기와 같이, 콘크리트 보강용 이형봉강의 연결부에 절삭가공으로 나사를 형성하는 경우에는 나사부 절삭가공이 용이하지 않음은 물론, 업셋팅에 의하여 얻어진 철근의 조직이 파괴되거나, 변형됨으로서 그 부위에 노치(Notch)부가 발생하여 취약하게 되며, 또한 업셋팅에 의하여 철근 내부조직이 가공경화되어 인성이 저하되고, 취성이 발생하여 충격에 약하게 되는 문제점을 내포하고 있다.However, as described above, when the screw is formed by cutting at the connection portion of the deformed bar for concrete reinforcement, not only the cutting of the thread is easy, but also the notch at the site due to the destruction or deformation of the steel structure obtained by the upsetting. (Notch) part occurs and becomes vulnerable. Also, the internal structure of the reinforcing steel is hardened by upsetting, so the toughness is lowered, and brittleness is generated, which impairs the impact.
이에 따라 본 발명자는 상기 종래 기술에 대한 문제점을 예의 연구한 결과, 연결부의 철근 조직을 파괴시키지 않고 가공할 수 있도록 하여 이의 연결부에 대한 기계적 강도를 향상시키고, 가공이 용이하여 가공비용을 크게 절감시킬 있는 콘크리트 보강용 이형봉강의 연결부 구조 및 그 연결부의 가공방법을 제공한다.Accordingly, the present inventors have studied the problems of the prior art as a result, can be processed without destroying the reinforcing bar structure of the connection portion to improve the mechanical strength of the connection portion, and easy to process, greatly reduce the processing cost To provide a joint structure of a deformed bar for reinforcing concrete and a method of processing the joint.
이를 실현하기 위하여 본 발명은, 2개의 콘크리트 보강용 이형봉강을 상호 길이방향으로 연결하기 위하여 이들 단부에 연결부를 형성함에 있어서, 이 연결부의 외주면에 돌출 형성되는 리브에 숫나사부를 형성하거나, 외주면의 돌출 형성된 리브를 완전 원형으로 성형하여 수나사를 형성하는 콘크리트 보강용 이형봉강의 연결부 구조를 제공하고,In order to realize this, the present invention, in forming the connecting portion at these ends in order to connect the two concrete reinforcing rods in the longitudinal direction of each other, a male screw portion is formed on the rib protruding on the outer peripheral surface of the connecting portion, or the protrusion of the outer peripheral surface To provide a structure of the connection portion of the deformed bar for reinforcing concrete to form a male thread by forming the formed rib in a perfect circle,
상기와 같은 연결부를 가공하기 위하여, 연결부의 기형적으로 형성된 상기 원주형 리브와 횡방향 리브를 2개 이상의 편이나 로울러로 이루어진 상온 금형에 의하여 연결부의 단부를 성형하는 제 1공정과; 상기 제 1공정에서 상온 성형된 연결부의 외주면에 전조작업으로 숫나사부를 성형하는 제 2공정; 으로 이루어지는 콘크리트 보강용 이형봉강의 연결부 가공방법을 제공한다.A first step of forming an end portion of the connecting portion by a normal temperature mold including two or more pieces or rollers in which the cylindrically shaped ribs and the transverse ribs are deformed, in order to process the connecting portion; A second step of forming a male screw part by a rolling operation on an outer circumferential surface of the connecting part formed at room temperature in the first step; It provides a connection part processing method of the release bar for concrete reinforcement.
도 1은 가공전의 콘크리트 보강용 이형봉강의 연결부 정면도.1 is a front view of the connection portion of the release bar for reinforcing concrete before processing.
도 2의 (a)(b)는 콘크리트 보강용 이형봉강의 연결부를 형단조하는 상태를 보인 도면.Figure 2 (a) (b) is a view showing a state forging the connection portion of the release bar for concrete reinforcement.
도 2의 (c)는 형단조에 의하여 성형된 콘크리트 보강용 이형봉강의 외부정면도.Figure 2 (c) is an external front view of the release bar for concrete reinforcement formed by forging.
도 2의 (d)는 형단조에 의하여 성형된 콘크리트 보강용 이형봉강의 내부 섬유상 조직의 변화도.Figure 2 (d) is a change in the internal fibrous structure of the release bar for reinforcing concrete formed by forging.
도 3은 본 발명에 의하여 가공이 완료된 상태의 콘크리트 보강용 이형봉강의 리브면에 나사부를 형성한 연결부 정면도.Figure 3 is a front view of the connecting portion formed with a thread on the rib surface of the release bar for reinforcement of concrete in the state of completion of processing according to the present invention.
도 4의 (a)(b)는 본 발명에 의하여 가공이 완료된 상태의 콘크리트 보강용 이형봉강의 연결부의 다른 실시예의 정면도.Figure 4 (a) (b) is a front view of another embodiment of the connection portion of the release bar for reinforcement of concrete in the state of processing completed by the present invention.
도 5는 도 4(a)의 단면도이다.5 is a cross-sectional view of FIG.
도 1은 가공전 콘크리트 보강용 이형봉강의 정면도로서, 이의 콘크리트 보강용 이형봉강(2)은 그 외주면에 등간격으로 원주형 리브(4)와 길이방향 리브(6)가 형성되어 있다.1 is a front view of a release bar for reinforcing concrete before processing, wherein the release bar 2 for reinforcing concrete is formed on the outer circumferential surface thereof with columnar ribs 4 and longitudinal ribs 6 at equal intervals.
이러한 콘크리트 보강용 이형봉강(2)의 연결부(8)를 도 2에서와 같이, 스웨이징하기 위하여 2개이상의 편이나 로울러로 이루어진 형단조 금형(10)에 삽입시킨 후에 유체 또는 기계적인 힘을 가하여 상온 형단조를 실시하여 필요한 연결부(8)의 직경으로 성형작업을 실시한다. 도 2의 (a)는 이형봉강(2)의 연결부(8)를 형단조 금형(10)에 넣은 상태의 평단면도를 나타내고, 도 2의 (b)는 이형봉강(2)의 연결부(8)를 형단조 금형(10)에 넣은 상태의 측단면도를 나타내며, 도 2의 (c)는 이형봉강(2)의 연결부(8)를 형단조 금형(10)에 넣고, 강한 힘으로 형단조시킨 후의 이형봉강의 상태를 나타내고, 도 2의 (d)는 도 2의 (c)에서 형단조시켰을 때의 이형봉강(2)의 내부 섬유상 조직의 변화도를 나타낸 것이다.As shown in FIG. 2, the connection part 8 of the release bar for reinforcing concrete 2 is inserted into a mold forging die 10 composed of two or more pieces or rollers for swaging, and then applied with fluid or mechanical force. Perform the mold forging at room temperature and perform the molding work to the required diameter of the connecting portion (8). FIG. 2A shows a cross sectional view of a state in which the connecting portion 8 of the release bar 2 is placed in the die forging die 10, and FIG. 2B shows the connecting portion 8 of the release bar 2; Is a side cross-sectional view of the state in which the die forging die 10 is placed, and FIG. 2C shows that the connecting portion 8 of the release bar 2 is placed in the die forging die 10 and die forged with a strong force. The state of a mold release bar is shown, and FIG.2 (d) shows the change degree of the internal fibrous structure of the mold release bar 2 at the time of die forging in FIG.2 (c).
상기와 같이 상온 형단조를 실시하는 것은 콘크리트 보강용 이형봉강(2)의 제조과정에서 리브(4)(6)의 기형적인 돌출부분이나, 철근 봉재의 기형을 곧게 다듬어 주거나, 봉강상에 형성되는 나사산 및 나사골의 크기 및 형상을 부여하기 위한 것이다.Performing a room temperature die forging as described above is to straighten the deformed portion of the ribs (4) (6) or the shape of the rebar bar in the manufacturing process of the deformed bar (2) for concrete reinforcement, or is formed on the bar To give the size and shape of the thread and screw bone.
리브의 기형적인 돌출부분을 절삭가공에 의하여 가공할 수 있으나, 절삭가공을 하면 철근 고유의 섬유상 조직이 전단되어 기계적 강도가 저하될 수 있으므로 본 발명에서는 소성가공에 의한 성형을 수행한다.The malformed protrusion of the rib can be processed by cutting, but the cutting process is carried out by plastic processing because the inherent fibrous structure can be sheared and the mechanical strength can be reduced.
상기와 같이 형단조를 마친 후에는 이의 연결부(8)에 나사를 가공하게 되는데, 이때에는 소성 전조가공으로 나사부를 형성하게 된다.After completing the forging as described above, the screw is machined to its connecting portion 8, in which case the thread is formed by plastic rolling.
본 발명에서 나사부를 전조가공으로 성형하는 것은 소재의 조직이 절단되지 않고, 소성 가공된 나사부는 기계적 강도가 향상되고, 조직이 치밀해지며, 연결부의 내부는 고유조직을 유지하므로 높은 하중과 충격에 견딜 수 있기 때문이다.In the present invention, the molding of the threaded part by rolling processing does not cut the structure of the material, the plastically processed threaded part is improved in mechanical strength, the structure is dense, and the interior of the connecting portion maintains its own structure, so that the high load and impact Because it can endure.
그리고 상기 나사부를 가공함에 있어서는 둥근나사 또는 삼각나사로 가공하며, 바람직하기로는 둥근나사 또는 사다리꼴 나사로 가공하는 것이다. 둥근나사로 가공하는 경우, 나사산의 단면이 둥근형으로 사다리꼴 나사와 같이 치근부분이 두껍게 이루어짐으로써, 저항력이 크고 노치현상이 발생되지 않음은 물론 체결성이 좋아 먼지, 모래 등이 많은 건설현장에서 용이하게 체결할 수 있기 때문이다.In the processing of the screw portion, a round screw or a triangular screw is processed, and preferably a round screw or a trapezoidal screw. In the case of round screw processing, the cross section of the thread is round and the root part is thick like the trapezoidal screw. Therefore, it is easy to be tightened at the construction site with high resistance and notch phenomenon as well as good fastening property. Because you can.
또한, 상기 둥근 나사의 피치를 일반 나사보다 좁게 하면 체결력 및 강도를 향상시킬 수 있음은 물론 진동이 많이 발생하더라도 이완될 염려가 없게 된다.In addition, when the pitch of the round screw is narrower than the general screw, the tightening force and strength can be improved, and there is no fear of relaxation even if a lot of vibration occurs.
그리고 상기 연결부(8)에 둥근 나사를 성형함에 있어서는 나사산 길이 d1을 콘크리트 보강용 이형봉강(2)의 공칭지름과 같거나, 적어도 2개의 원주형 리브(4) 이상으로 형성하는 것이 바람직하다.In forming the round screw in the connecting portion 8, it is preferable to form the thread length d1 equal to the nominal diameter of the release bar 2 for reinforcing concrete or at least two columnar ribs 4 or more.
이는 연결부의 체결상태를 견고히 할 수 있도록 하기 위함이다.This is to ensure the fastening state of the connection portion.
그리고 도면에서는 원주방향 리브(4)와 길이방향 리브(6)가 형성된 콘크리트 보강용 이형봉강(2)을 도시하고 있으나, 이에 한정되는 것은 아니고, 사선 또는 X선으로 형성되는 리브를 보유하는 콘크리트 이형봉강(2)에도 적용하는 것은 가공성이나 최종제품의 강도 등이 향상되어 더욱 바람직하나, 국내에서는 이러한 봉강이 시판되지 않고 수입품만이 존재하여 구입에 어려움이 있으나, 적용에는 문제가 없다.In addition, although the drawing shows the release bar 2 for concrete reinforcement in which the circumferential rib 4 and the longitudinal rib 6 were formed, it is not limited to this, Concrete release which has the rib formed by diagonal or X-rays. Applying to the bar (2) is more preferable because the workability and the strength of the final product is improved, but in Korea, such a bar is not commercially available, there is only imported goods, there is a difficulty in purchase, but there is no problem in application.
그리고 도 4 및 도 5는 본 발명에 의한 다른 실시예의 연결부의 구성을 나타내는 도면으로서, 본 발명에서는 콘크리트 보강용 이형봉강(2)의 외주면에 형성된 리브(4)(6) 부분에만 나사부가 형성된 것으로 설명하고 있으나, 고강도를 더욱 요구하는 경우에는 이의 리브(4)(6)를 포함하는 외주변 전체에 나사부를 형성한 것이다. 또한, 도 4의 (a)와 (b)의 차이는 이형봉강의 연결부(8)에 형단조에 가한 힘을 크게 한 차이로서, 도 4의 (b)는 힘을 크게 하여 도 2의 (c)에 나타낸 바와 같이 리브나 마디의 돌출부분이 없도록 하여 나사가공하였 때의 상태를 나타내는 것이다.4 and 5 is a view showing the configuration of the connecting portion of another embodiment according to the present invention, in the present invention, only the rib portion 4, 6 formed on the outer circumferential surface of the release bar (2) for concrete reinforcement is formed with a screw portion Although it demonstrates, when the high strength is further requested | required, the thread part is formed in the whole outer periphery including the rib 4 and 6 of this. In addition, the difference between (a) and (b) of FIG. 4 is a difference in which the force applied to the forging to the connecting portion 8 of the release bar is increased, and FIG. As shown in), it shows the state when screwing so that there is no protrusion of rib or node.
이상에서와 같이 본 발명에 의하면, 건설, 토목 현장에서 사용되는 콘크리트 보강용 이형봉강의 연결부의 철근 조직을 파괴시키지 않고 가공할 수 있도록 하여 이의 연결부에 대한 기계적 강도를 향상시킬 수 있게 된다.As described above, according to the present invention, it is possible to process without destroying the reinforcing bar structure of the connecting portion of the reinforcing bar for concrete reinforcement used in construction, civil engineering site it is possible to improve the mechanical strength of the connecting portion.
그리고 형단조와 전조가공으로 연결부를 형성할 수 있게 되는 바, 그 가공이 매우 용이하며, 이에 따른 제조비용도 절감할 수 있게 된다.In addition, the connection part can be formed by forging and rolling, and thus the processing is very easy, and thus manufacturing cost can be reduced.
특히, 둥근나사로 가공하는 경우, 체결이 용이하게 이루어져 연결작업이 매우 용이하며, 공기단축과 비용을 절감시킬 수 있는 발명인 것이다.In particular, when processing with a round screw, it is easy to tighten the connection work is very easy, it is an invention that can reduce the air shortening and cost.
Claims (5)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR101998011278 | 1998-03-31 | ||
| KR1019980011278 | 1998-03-31 | ||
| KR19980011278 | 1998-03-31 | ||
| CA002268878A CA2268878C (en) | 1998-03-31 | 1999-04-13 | Method of working connection end of deformed bar for reinforcing concrete, deformed bar worked by the method and structure deformed bar |
| TW088109033A TW440482B (en) | 1998-03-31 | 1999-06-01 | Manufacture method for concrete-strengthening deformed reinforcement bar and its connecting ends |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR19990076461A true KR19990076461A (en) | 1999-10-15 |
| KR100248963B1 KR100248963B1 (en) | 2000-03-15 |
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ID=32965900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980014746A KR100248963B1 (en) | 1998-03-31 | 1998-04-24 | Thread formation on rods and the method of preparation of them |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0947642B1 (en) |
| JP (1) | JPH11342448A (en) |
| KR (1) | KR100248963B1 (en) |
| CN (1) | CN1239172A (en) |
| AU (1) | AU2257499A (en) |
| CA (1) | CA2268878C (en) |
| TW (1) | TW440482B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020065969A (en) * | 2001-02-08 | 2002-08-14 | 김순분 | Machining method of a screw for a reinforcement bar |
Families Citing this family (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100515204B1 (en) * | 1998-04-13 | 2005-11-21 | 신우산업 주식회사 | Connection structure of reinforcing bar for concrete reinforcement and processing method of the connection |
| AU757918B2 (en) * | 1999-02-12 | 2003-03-13 | Industrial Rollformers Pty Ltd | Method for externally threading a deformed bar |
| WO2000047349A1 (en) * | 1999-02-12 | 2000-08-17 | Industrial Rollformers Pty. Ltd. | Method for externally threading a deformed bar |
| DE59900345D1 (en) * | 1999-04-22 | 2001-11-29 | Ancotech Ag Dielsdorf | Process for producing an armoring rod with an external thread |
| EP1154092A1 (en) * | 2000-05-09 | 2001-11-14 | Schöck Enwicklungsgesellschaft mbH | Sleeve connection for reinforcing bars |
| KR100449977B1 (en) * | 2002-04-04 | 2004-10-01 | 김광희 | Connecting structure of reinforced bar for reinforced concreate |
| US6880224B2 (en) * | 2003-06-25 | 2005-04-19 | Erico International Corporation | Deformed reinforcing bar splice and method |
| US7624556B2 (en) * | 2003-11-25 | 2009-12-01 | Bbv Vorspanntechnik Gmbh | Threaded deformed reinforcing bar and method for making the bar |
| ES2238930B1 (en) * | 2004-02-20 | 2007-05-16 | Compañia Española De Laminacion, S.L. | BAR FOR CONCRETE CONCRETE. |
| SG155801A1 (en) * | 2008-03-24 | 2009-10-29 | Chua Bong Sai | Method for working a thread on deformed reinforcing bar |
| CN101618509B (en) * | 2009-07-30 | 2010-09-29 | 廊坊凯博建设机械科技有限公司 | Equipment and method for processing steel reinforced bar threads |
| FR2952840B1 (en) * | 2009-11-26 | 2013-08-02 | Edgard Henri Gerard Albert Thirion | ARMATURE BONDING DEVICE AND METHOD FOR MANUFACTURING THE SAME |
| WO2012029079A2 (en) * | 2010-09-03 | 2012-03-08 | Gaurav Malhotra | Reinforcing bar coupling and method |
| JP5420712B2 (en) * | 2012-04-19 | 2014-02-19 | 株式会社トーカイ | Deformed bar threaded rebar joint and its threaded deformed bar |
| CN104060770B (en) * | 2013-03-22 | 2016-03-30 | 中冶建筑研究总院有限公司 | Steel concrete supporting method |
| DE102013208413B4 (en) * | 2013-05-07 | 2019-10-10 | Badische Stahlwerke Gmbh | Reinforcing steel, production method for reinforcing steel |
| CN105013984B (en) * | 2014-04-24 | 2017-06-13 | 郑州大学 | Gathering stock high tensile steel wire and preparation method thereof |
| CN104191177B (en) * | 2014-08-25 | 2016-06-29 | 苏州第五建筑集团有限公司 | A kind of hot pier straight thread reinforced bar and process units thereof and production technology |
| JP2016175092A (en) * | 2015-03-19 | 2016-10-06 | 株式会社アキテック | End screw processing method for reinforcing bar and end structure of reinforcing bar |
| CN104942006A (en) * | 2015-06-25 | 2015-09-30 | 江苏永钢集团有限公司 | Asymmetric ribbed shapes for threaded steel finished product grooves and production method thereof |
| CN105735566B (en) * | 2016-04-01 | 2019-01-04 | 中国建筑第八工程局有限公司 | The connection sleeve of finish rolling deformed bar |
| CN109563706B (en) * | 2016-10-13 | 2022-01-04 | 福田章 | Screw type reinforcing steel bar joint structure of special-shaped reinforcing steel bar and manufacturing method thereof |
| JP6829799B2 (en) * | 2017-04-26 | 2021-02-17 | 株式会社小野工業所 | Reinforcing bar |
| CN110202689B (en) * | 2019-07-08 | 2020-06-23 | 湖北思泽新能源科技有限公司 | Hydraulic pliers for connecting reinforcing steel bars |
| WO2023069008A1 (en) * | 2021-10-18 | 2023-04-27 | Angkasa Daehan Steel Pte. Ltd. | Method for working a thread on a reinforcing bar for reinforcement of concrete |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2162915B (en) * | 1984-08-09 | 1988-06-02 | Allied Steel Wire Ltd | Reinforcing bar joints |
| FR2639054B2 (en) | 1988-02-03 | 1992-07-03 | Techniport Sa | IMPROVEMENTS RELATING TO THE MECHANICAL CONNECTION OF CONCRETE ROUND, PROCESS FOR PRODUCING SUCH CONNECTIONS AND CONCRETE ROUND OBTAINED BY IMPLEMENTING SAID PROCESS |
| GB2227802A (en) * | 1989-01-26 | 1990-08-08 | Square Grip Ltd | Concrete reinforcement bar couplings and apparatus for enlarging bar ends |
| FR2653809B1 (en) * | 1989-10-26 | 1995-05-12 | Techniport Sa | INSTALLATION FOR PRODUCING CONCRETE ROUND. |
| GB2238499A (en) * | 1989-11-09 | 1991-06-05 | Hy Ten Reinforcement Company L | Forming threaded bars |
| FR2689156B1 (en) * | 1992-03-30 | 1995-07-13 | Techniport Sa | PROCESS FOR PRODUCING A MECHANICAL CONNECTION OF CONCRETE ROUND, CONNECTION OBTAINED BY THE PROCESS, CONCRETE ROUND AUTHORIZING THE IMPLEMENTATION OF SAID PROCESS, AND CONCRETE ROUND PREPARATION INSTALLATION. |
| FI922525A0 (en) * | 1992-06-01 | 1992-06-01 | Tartuntamarkkinointi Oy | FOERFARANDE FOER SKAERNING AV EN GAENGA I EN STAONG. |
| US5776001A (en) | 1994-02-16 | 1998-07-07 | Ccl Systems Limited | Thread formation |
-
1998
- 1998-04-24 KR KR1019980014746A patent/KR100248963B1/en not_active IP Right Cessation
-
1999
- 1999-03-31 JP JP11091764A patent/JPH11342448A/en active Pending
- 1999-03-31 AU AU22574/99A patent/AU2257499A/en not_active Abandoned
- 1999-03-31 CN CN99104528A patent/CN1239172A/en active Pending
- 1999-03-31 EP EP99302528A patent/EP0947642B1/en not_active Expired - Lifetime
- 1999-04-13 CA CA002268878A patent/CA2268878C/en not_active Expired - Lifetime
- 1999-06-01 TW TW088109033A patent/TW440482B/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020065969A (en) * | 2001-02-08 | 2002-08-14 | 김순분 | Machining method of a screw for a reinforcement bar |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2257499A (en) | 1999-10-14 |
| EP0947642B1 (en) | 2006-05-31 |
| CA2268878A1 (en) | 2000-10-13 |
| CN1239172A (en) | 1999-12-22 |
| EP0947642A2 (en) | 1999-10-06 |
| CA2268878C (en) | 2003-04-29 |
| TW440482B (en) | 2001-06-16 |
| JPH11342448A (en) | 1999-12-14 |
| EP0947642A3 (en) | 2000-01-12 |
| KR100248963B1 (en) | 2000-03-15 |
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