KR20100060877A - Big size wire rod using warm rolling method - Google Patents

Big size wire rod using warm rolling method Download PDF

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KR20100060877A
KR20100060877A KR20080119662A KR20080119662A KR20100060877A KR 20100060877 A KR20100060877 A KR 20100060877A KR 20080119662 A KR20080119662 A KR 20080119662A KR 20080119662 A KR20080119662 A KR 20080119662A KR 20100060877 A KR20100060877 A KR 20100060877A
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South Korea
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wire rod
rolling
steel
wire
warm
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KR20080119662A
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Korean (ko)
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김정한
유권범
박상용
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벤다선광공업 주식회사
한국신철공업주식회사
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Priority to KR20080119662A priority Critical patent/KR20100060877A/en
Publication of KR20100060877A publication Critical patent/KR20100060877A/en

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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
    • 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
    • B21B1/18—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 in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0057—Coiling the rolled product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0064—Uncoiling the rolled product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE: A warm rolling method using a large wire rod is provided to reduce the manufacturing process and cost by minimizing the production of scrap. CONSTITUTION: A warm rolling method comprises the steps of: inserting a large wire rod and chucking it to an uncoiler, removing an oxide film from the surface of the wire rod while unrolling the wire rod from the uncoiler, softening the wire rod with a heating device at an annealing temperature of 650~690°C, transforming the profile of the softened wire rod into a desired shape, keeping the dimension by feeding back the dimension difference of a bar, and pulling the bar from a drum and coiling to a recoiler.

Description

대형 사이즈 선재를 이용한 온간 압연방법{Big size wire rod using warm rolling method} Big size wire rod using warm rolling method

본 발명은 대형 사이즈 선재를 이용한 온간 압연방법에 관한 것으로서, 더욱 상세하게는 기계 구조용 탄소강, 크롬강, 크롬 몰리브덴강, 소입성 보증용강 등으로 된 대형 사이즈를 갖는 선재를 사용하여 온간 압연공정을 통해 기계적 성질이 뛰어난 차량용 링 기어나, 일반 산업용 이형강 등의 소재를 코일 투 코일 방식에 의해 스크랩 발생량을 최소화하면서 제조 공정을 단축시켜 연속적으로 대량 생산할 수 있도록 한 것이다.The present invention relates to a warm rolling method using a large size wire rod, and more particularly to a mechanical rolling through a warm rolling process using a wire rod having a large size made of carbon steel, chromium steel, chromium molybdenum steel, hardenability guarantee steel, etc. Coil-to-coiled materials, such as automotive ring gears and general industrial release steels, are produced by the coil-to-coil method to minimize the amount of scrap generated and to shorten the manufacturing process so that mass production can be carried out continuously.

일반적으로, 선재(wire rod)의 제조공정은 고로와 전로 작업 및 연속 주조공정을 거쳐 생산된 볼룸을 강편 압연기로 빌렛 형상으로 제조하고, 이를 다수 공정의 선재 압연라인을 통하여 선재를 생산하게 되는데, 그 선재의 압연 작업은 다시 조압연, 중간조 압연 및 사상 압연으로 나누어지고, 최종적으로 원형 선재를 제조하게 되는 데, 이러한 공정을 통해 제조된 선재는 복수개가 하나의 다발로 결속되 거나, 코일 형태로 권회되어 외부로 출하된다.In general, the wire rod manufacturing process is a ballroom produced through the blast furnace, converter work and continuous casting process in the form of a billet rolling mill, and the wire rod is produced through a wire rolling line of a number of processes, The rolling work of the wire is divided into rough rolling, half-rolling and finishing rolling, and finally, a round wire is manufactured, and the wire produced through this process is bundled in a bundle or coiled. It is wound up and shipped out.

상기와 같이 제조된 선재는 압연 공정 등을 통해 차량용 링 기어 등과 같은 각종 산업용 부품들의 소재로서 가공되는 데, 종래에는 가공시 소재에 요구되는 탈탄, 열처리 등의 기계적 성질 및 표면 조건이나, 치수의 균일성 등 비교적 불량 발생이 최소화될 수 있도록 조건들을 충족시키기 위해 ø20㎜ 이하의 선재를 주로 사용했으나, ø20㎜ 이상의 선재는 가공시 생산성, 불량 발생률, 제조 원가 등의 조건들을 충족시켜 가공하기 어렵기 때문에 이런 조건들을 충족시켜 대형 사이즈를 갖는 선재를 효율적으로 가공하기 위한 공법의 출현이 요망되었다. The wire rod manufactured as described above is processed as a material of various industrial parts such as a ring gear for a vehicle through a rolling process, etc. In the related art, mechanical properties and surface conditions such as decarburization and heat treatment required for materials during processing, and uniformity of dimensions Wire rods of ø20 mm or less were mainly used to meet the conditions to minimize the occurrence of relatively poor defects, such as performance. However, wire rods of ø20 mm or more are difficult to process by satisfying conditions such as productivity, defect rate, and manufacturing cost. To meet these conditions, the emergence of a method for efficiently processing wire rods having a large size was desired.

따라서, 본 발명은 상기한 종래의 제반 문제점을 해결하기 위해 안출한 것으로서, 본 발명은 기계 구조용 탄소강, 크롬강, 크롬 몰리브덴강, 소입성 보증용강 등으로 된 대형 사이즈를 갖는 선재를 사용하여 온간 압연공정을 통해 기계적 성질이 뛰어난 차량용 링 기어나, 일반 산업용 이형강 등의 소재를 코일 투 코일 방식에 의해 절단 공정을 진행하지 않으면서 연속적으로 대량 생산할 수 있도록 하여 제조 공정의 단축에 의한 작업 시간을 줄여 생산성을 향상시킬 수 있을 뿐만 아니라, 스크랩 발생량을 최소화하여 제조 원가를 절감시킬 수 있는 대형 사이즈 선재를 이용한 온간 압연방법을 제공하는 데 그 목적이 있다. Therefore, the present invention has been made to solve the above-mentioned conventional problems, the present invention is a warm rolling process using a wire rod having a large size made of carbon steel, chromium steel, chromium molybdenum steel, hardenability guarantee steel, etc. for mechanical structure Through the coil-to-coil method, materials such as automotive ring gear and general industrial deformed steel with excellent mechanical properties can be continuously mass-produced through the coil-to-coil method. In addition, the purpose of the present invention is to provide a warm rolling method using a large size wire rod that can reduce manufacturing costs by minimizing scrap generation.

상기한 목적을 달성하기 위해 본 발명은 ø25~48㎜로 제조된 대형 선재를 투입하여 언코일러에 척킹하는 단계와, 상기 언코일러에서 선재를 풀어주면서 선재 표피에 형성된 산화 피막을 제거하는 단계와, 상기 산화 피막이 제거된 상태의 선재를 히팅 장치에 의해 어닐링 온도 650~690℃로 가열하여 경도를 저하시키기 위해 선재의 상태를 연화시키는 단계와, 상기 연화된 선재를 온간 압연공정에 의해 원하는 단면 형상으로 변형시키는 단계와, 상기 온간 압연공정의 사상 압연을 완료한 연속된 바를 측정하여 사상 압연에 측정치를 전달함에 따라 바의 치수 차이를 피드백하여 치수를 유지하는 단계와, 상기 측정이 완료되고 난 후 드럼에서 바를 끌어 당겨 다시 리코일러로 코일링하는 단계를 진행하는 것을 특징으로 하는 대형 사이즈 선재를 이용한 온간 압연방법이 제공된다.In order to achieve the above object, the present invention comprises the steps of chucking the uncoiler by inserting a large wire rod made of ø25 ~ 48㎜, removing the oxide film formed on the wire skin while releasing the wire from the uncoiler, Heating the wire rod with the oxide film removed to a anneal temperature of 650 ° C. to 690 ° C. by a heating apparatus to soften the state of the wire rod to reduce hardness, and to heat the wire rod to a desired cross-sectional shape by a warm rolling process. Deforming and maintaining the dimensions by measuring a continuous bar having finished finishing rolling in the warm rolling process and feeding the measured value to the finishing rolling to feed back the dimensional difference of the bars, and after the measurement is completed, the drum Warm using a large size wire rod, characterized in that to pull the bar to coil the coil back to the recoil A rolling method is provided.

또한, 상기 대형 선재의 재질은 기계 구조용 탄소강, 크롬강, 크롬 몰리브덴강, 망간 및 망간 크롬강, 니켈 크롬강, 니켈크롬 몰리브덴강, 제철소에서 열처리 성능을 보증하여 공급하는 소입성 보증용강 중의 어느 하나로 된 것을 그 특징으로 한다.In addition, the material of the large wire rod is made of any one of carbon steel for structural steel, chromium steel, chromium molybdenum steel, manganese and manganese chromium steel, nickel chromium steel, nickel chromium molybdenum steel, steel for guaranteeing the heat treatment performance in steel mills. It features.

그리고, 상기 온간 압연공정은 탠덤 압연기를 통해 진행되며, 가공면을 순차적으로 조압연, 중간조 압연 및 사상 압연에 의해 원하는 단면 형상으로 변형시키는 것을 그 특징으로 한다.In addition, the warm rolling process is carried out through a tandem rolling mill, characterized in that the processing surface is sequentially transformed into a desired cross-sectional shape by rough rolling, intermediate rough rolling and finishing rolling.

이상에서 상술한 바와 같이, 본 발명은 기계 구조용 탄소강, 크롬강, 크롬 몰리브덴강, 소입성 보증용강 등으로 된 대형 사이즈를 갖는 선재를 사용하여 온간 압연공정을 통해 기계적 성질이 뛰어난 차량용 링 기어나, 일반 산업용 이형강 등의 소재를 코일 투 코일 방식에 의해 절단 공정을 진행하지 않으면서 연속적으로 대량 생산할 수 있음으로써 제조 공정의 단축에 의한 작업 시간을 줄여 생산성을 향상시킬 수 있음과 아울러, 스크랩 발생량을 최소화하여 제조 원가를 절감시킬 수 있는 등의 많은 장점이 구비된 매우 유용한 발명이다.As described above, the present invention is a vehicle ring gear having excellent mechanical properties through a warm rolling process using a wire rod having a large size made of carbon steel, chromium steel, chromium molybdenum steel, hardenability guarantee steel, etc. The material can be continuously mass-produced without cutting process by coil-to-coil method, which can reduce the production time due to the shortening of the manufacturing process, improve productivity and minimize the amount of scrap. It is a very useful invention equipped with many advantages such as to reduce the manufacturing cost.

이하, 상기한 목적을 달성하기 위한 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention for achieving the above object will be described in detail.

도 1은 본 발명의 대형 사이즈 선재를 이용한 온간 압연방법을 순차적으로 나타낸 흐름도이다.1 is a flowchart sequentially showing a warm rolling method using a large size wire of the present invention.

본 발명의 대형 사이즈 선재를 이용한 온간 압연방법은 먼저, ø25~48㎜로 제조된 대형 선재를 투입하여 언코일러에 척킹하는 데, 상기 대형 선재의 재질은 기계 구조용 탄소강, 크롬강, 크롬 몰리브덴강, 망간 및 망간 크롬강, 니켈 크롬강, 니켈크롬 몰리브덴강, 제철소에서 열처리 성능을 보증하여 공급하는 소입성 보증용강 중 제조하고자 하는 부품의 특성에 따라 선택하여 사용한다.In the warm rolling method using the large size wire rod of the present invention, first, a large wire rod made of ø25 to 48 mm is inserted and chucked to an uncoiler. And manganese chromium steel, nickel chromium steel, nickel chromium molybdenum steel, and selected according to the characteristics of the parts to be manufactured among the quenchability guarantee steels which are supplied with guaranteed heat treatment performance in steel mills.

이때, 상기한 대형 선재를 투입하기 전에 강의 종류, 관리 번호 확인이나, 선재의 표면을 세밀하게 검사하여 투입함은 물론이다.At this time, of course, the type of steel, the control number, or the surface of the wire is carefully inspected before the large wire is added.

그 다음, 상기 언코일러에서 선재를 풀어주면서 선재 표피에 얇게 형성된 산화 피막을 제거하기 위해 리버스 벤딩(reverse vending)을 실시하여 선재에 형성된 산화 피막을 제거한 후, 이 산화 피막이 제거된 상태의 선재를 히팅 장치에 의해 어닐링(Annealing; 풀림) 온도 650~690℃로 가열함으로써 소재의 조직을 균일화할 수 있음과 동시에 내부 응력을 제거하여 선재의 상태를 연화시킬 수 있게 되는 데, 이때 상기 히팅 장치로는 작업 환경에 따라 전기를 사용하는 전기 유도가열장치나, 기름 또는 가스를 원료로 사용하는 가열 장치 등이 사용될 수 있으며, 상기한 선재가 연화후에는 선재가 갖고 있던 경도보다 HB 20~40 포인트가 떨어지게 된다.Then, by removing the oxide film formed on the wire rod by performing reverse vending to remove the oxide film thinly formed on the wire skin while releasing the wire rod from the uncoiler, heating the wire rod with the oxide film removed thereon. By annealing (annealing) temperature by 650 ~ 690 ℃ by the device can be uniformized the structure of the material and at the same time to remove the internal stress to soften the state of the wire rod, the working with the heating device Depending on the environment, an electric induction heating device using electricity or a heating device using oil or gas may be used. After the wire is softened, HB 20 to 40 points are lower than the hardness of the wire. .

그 다음, 상기와 같이 연화시킨 선재를 온간 압연공정에 의해 원하는 단면 형상으로 변형시키게 되는 데, 이 온간 압연공정은 탠덤 압연기(Tandem Mill)를 통해 진행되며, 이러한 탠덤 압연기는 통상적으로 복수개의 압연기로 구성된 압연기 라인을 포함하고, 이들 각각의 압연기는 압연 재료의 통과 방향으로 정렬된 작업롤 및 작업롤 위와 아래에 위치한 역-재료롤을 구비하며, 제 1 스탠드의 입구측에 위치한 페이-오프(pay-off) 릴 및 최종 스탠드의 출구측의 인장 릴에서 손상된 압연 재료에서 인장이 가해지는 동안 구동롤로서 작업롤을 이용하여 압연 작업이 수행된다. Then, the softened wire rod as described above is transformed into a desired cross-sectional shape by a warm rolling process, which is carried out through a tandem mill, which is typically a plurality of rolling mills. A rolling mill line, each of which has a work roll aligned in the direction of passage of the rolled material and a reverse-material roll located above and below the work roll, the pay-off being located at the inlet side of the first stand. -off) The rolling operation is carried out using a work roll as the driving roll while tension is applied to the damaged rolled material in the reel and the tension reel on the exit side of the final stand.

또한, 압연 재료에 소정 인장을 가하기 위하여 복수개의 압연기로 구성된 압연기 라인의 입구측 또는 출구측에 배치된 물림롤(bridle roll)을 구비한 탠덤 압연기 설비가 있고, 이와 같은 탠덤 압연기 설비는 연속한 라인에 설치되며, 상기 작업롤들은 일반적으로 오프셋을 가지고 배치되어 작업롤의 중심축이 작업롤의 위와 아래에 위치한 역-재료롤의 중심축에서 약간 변위되어 안정적인 압연 상태를 얻을 수 있게 된다.There is also a tandem rolling mill having bridle rolls arranged at the inlet or outlet side of a rolling mill line consisting of a plurality of rolling mills to apply a predetermined tension to the rolled material. The work rolls are generally arranged with an offset so that the central axis of the work roll is slightly displaced from the central axis of the inverse material roll located above and below the work roll so as to obtain a stable rolling state.

상기와 같이 연화시킨 선재는 텐덤 압연기를 통해 순차적으로 가공면을 거친 상태로 개략적으로 만드는 조압연, 이 조압연을 통과한 선재의 가공면을 매끄러운 상태로 만드는 중간조 압연, 이 중간조 압연을 통과한 선재의 가공면을 최종적으로 반들반들하게 미세한 상태로 만드는 사상 압연에 의해 원하는 단면 형상으로 변형시키게 된다.The wire rod softened as described above passes through rough rolling, which is roughly processed through the tandem rolling mill, and half-rolled rolling which makes the processed surface of the wire passed through the rough rolling smooth. The finishing surface of one wire rod is finally transformed into a desired cross-sectional shape by finishing rolling, which smoothly makes a fine state.

그 다음, 상기 사상 압연을 완료한 연속된 바(bar)를 측정하여 사상 압연에 측정치를 전달함으로써 롤의 열팽창과 수축에 의한 바의 치수 차이를 피드백하여 소정의 치수를 유지시키며, 이 측정이 완료되고 난 후에는 드럼에서 상기 바를 일정한 힘으로 끌어당기면서 다시 리코일러로 코일링을 함에 따라 공정을 효율적으로 완료할 수 있게 된다.Then, by measuring the continuous bar that completed the finishing rolling and transferring the measured value to the finishing rolling, the difference in the dimensions of the bars due to the thermal expansion and contraction of the roll is fed back to maintain a predetermined dimension, and the measurement is completed. After the process, the bar is coiled with the recoiler while pulling the bar with a constant force from the drum, thereby completing the process efficiently.

상기와 같이 본 발명은 기계 구조용 탄소강, 크롬강, 크롬 몰리브덴강, 소입성 보증용강 등으로 된 대형 선재를 온간 압연공정을 거쳐 절단 공정을 진행하지 않는 코일 투 코일(coil to coil) 방식에 의해 차량용 링 기어, 산업용 이형봉강 등과 같이 우수한 기계적 성질을 요구하는 소재를 가공하여 연속적으로 생산할 수 있으므로 제조 공정의 단축에 의한 작업 시간을 줄여 생산성을 증대시킬 수 있음과 아울러, 스크랩 발생량을 최소화하여 제조 원가를 절감시킬 수 있게 된다.As described above, the present invention is a vehicle ring by a coil-to-coil method that does not undergo a cutting process through a warm rolling process made of carbon steel, chromium steel, chromium molybdenum steel, hardenability guarantee steel, etc. By processing materials that require excellent mechanical properties, such as gears and industrial deformed bars, it can be continuously produced to reduce productivity and reduce production time by shortening the manufacturing process. You can do it.

도 1은 본 발명의 대형 사이즈 선재를 이용한 온간 압연방법을 순차적으로 나타낸 흐름도 1 is a flow chart sequentially showing a warm rolling method using a large size wire of the present invention

Claims (3)

ø25~48㎜로 제조된 대형 선재를 투입하여 언코일러에 척킹하는 단계와,chucking the uncoiler by inserting a large wire rod manufactured from ø25 to 48 mm; 상기 언코일러에서 선재를 풀어주면서 선재 표피에 형성된 산화 피막을 제거하는 단계와,Removing the oxide film formed on the skin of the wire while releasing the wire from the uncoiler; 상기 산화 피막이 제거된 상태의 선재를 히팅 장치에 의해 어닐링 온도 650~690℃로 가열하여 경도를 저하시키기 위해 선재의 상태를 연화시키는 단계와, Softening the state of the wire in order to lower the hardness by heating the wire rod in the state where the oxide film is removed to an annealing temperature of 650 to 690 캜 by a heating apparatus; 상기 연화된 선재를 온간 압연공정에 의해 원하는 단면 형상으로 변형시키는 단계와, Deforming the softened wire rod to a desired cross-sectional shape by a warm rolling process; 상기 온간 압연공정의 사상 압연을 완료한 연속된 바를 측정하여 사상 압연에 측정치를 전달함에 따라 바의 치수 차이를 피드백하여 치수를 유지하는 단계와, Maintaining the dimensions by feeding back the difference in the dimensions of the bars as measuring the successive bars of finishing the finishing rolling of the warm rolling process and transferring the measured values to the finishing rolling; 상기 측정이 완료되고 난 후 드럼에서 바를 끌어당겨 다시 리코일러로 코일링하는 단계를 진행하는 것을 특징으로 하는 대형 사이즈 선재를 이용한 온간 압연방법.After the measurement is completed, the step of pulling the bar from the drum and coiling back to the recoiler, characterized in that the warm rolling method using a large size wire rod. 제 1 항에 있어서, 상기 대형 선재의 재질은 기계 구조용 탄소강, 크롬강, 크롬 몰리브덴강, 망간 및 망간 크롬강, 니켈 크롬강, 니켈크롬 몰리브덴강, 제철소에서 열처리 성능을 보증하여 공급하는 소입성 보증용강 중의 어느 하나로 된 것을 특징으로 하는 대형 사이즈 선재를 이용한 온간 압연방법.According to claim 1, wherein the material of the large wire is any one of carbon steel, chromium steel, chromium molybdenum steel, manganese and manganese chromium steel, nickel chromium steel, nickel chromium molybdenum steel, a sintered steel for guaranteeing heat treatment performance in steel mills Warm rolling method using a large size wire rod, characterized in that one. 제 1 항에 있어서, 상기 온간 압연공정은 탠덤 압연기를 통해 진행되며, 가공면을 순차적으로 조압연, 중간조 압연 및 사상 압연에 의해 원하는 단면 형상으로 변형시키는 것을 특징으로 하는 대형 사이즈 선재를 이용한 온간 압연방법.The method of claim 1, wherein the warm rolling process is carried out through a tandem rolling mill, the warm surface using a large size wire rod, characterized in that the processing surface is sequentially transformed into the desired cross-sectional shape by rough rolling, intermediate rough rolling and finishing rolling Rolling method.
KR20080119662A 2008-11-28 2008-11-28 Big size wire rod using warm rolling method KR20100060877A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706631A (en) * 2013-12-31 2014-04-09 常州中钢精密锻材有限公司 Novel rolling process of nickel-based alloy bar materials
KR20230168488A (en) 2022-06-07 2023-12-14 주식회사 포스코 System for manufacturing rod coil and control method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706631A (en) * 2013-12-31 2014-04-09 常州中钢精密锻材有限公司 Novel rolling process of nickel-based alloy bar materials
KR20230168488A (en) 2022-06-07 2023-12-14 주식회사 포스코 System for manufacturing rod coil and control method thereof

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