KR101185934B1 - Device for quenching roll - Google Patents

Device for quenching roll Download PDF

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KR101185934B1
KR101185934B1 KR1020110008733A KR20110008733A KR101185934B1 KR 101185934 B1 KR101185934 B1 KR 101185934B1 KR 1020110008733 A KR1020110008733 A KR 1020110008733A KR 20110008733 A KR20110008733 A KR 20110008733A KR 101185934 B1 KR101185934 B1 KR 101185934B1
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roll
quenching
rolls
protrusions
cooling
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KR1020110008733A
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Korean (ko)
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KR20120087504A (en
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김민기
이중헌
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현대제철 주식회사
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    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/38Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062Heat-treating apparatus with a cooling or quenching zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B27/00Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06Lubricating, cooling or heating rolls
    • B21B27/10Lubricating, cooling or heating rolls externally
    • B21B2027/103Lubricating, cooling or heating rolls externally cooling externally

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • 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 롤의 쿠엔칭장치에 관한 것으로, 롤이 회전롤들 사이에 올려져 회전하며 냉각되는 동안, 롤의 표면에 생성되는 스케일을 회전롤에 돌출 형성되는 돌기들로 탈락시켜 원활한 냉각이 이루어지도록 함으로써, 롤의 냉각 시간을 단축시켜 조업 효율성을 높이고, 이로 인해 우수한 성능을 갖는 롤 제품을 제공한다.The present invention relates to a quenching device of a roll, and while the roll is raised and rotated between the rotating rolls, smooth cooling is achieved by dropping the scale generated on the surface of the roll into protrusions protruding from the rotating roll. By reducing the cooling time of the roll, the operation efficiency is increased, thereby providing a roll product having excellent performance.

Description

롤의 쿠엔칭장치{DEVICE FOR QUENCHING ROLL}Roll quenching device {DEVICE FOR QUENCHING ROLL}

본 발명은 롤의 쿠엔칭장치에 관한 것으로, 더욱 상세하게는 롤의 스케일을 제거하며 쿠엔칭을 실시할 수 있도록 한 롤의 쿠엔칭장치에 관한 것이다.
TECHNICAL FIELD The present invention relates to a quenching apparatus for rolls, and more particularly, to a quenching apparatus for rolls capable of performing quenching while removing the scale of the rolls.

일반적으로, 강철을 적당한 온도로 가열한 후, 적당한 냉각 속도로 냉각하여 확산 변태의 정도나 확산 변태의 발생 유무를 조절하여 용도에 맞는 미세 조직을 만들어 목적하는 성질이나 상태를 얻기 위해 열처리 조작을 한다.In general, the steel is heated to an appropriate temperature, and then cooled at an appropriate cooling rate to control the degree of diffusion transformation or the occurrence of diffusion transformation, thereby making a microstructure suitable for the purpose, and performing heat treatment to obtain a desired property or state. .

열간압연용 워크롤로 사용되는 주조롤은 재질의 물성 부여를 위하여 어닐링(Annealing)-오스테나이징(Austenitizing)-쿠엔칭(Quenching)-템퍼링(Tempering)과 같은 열처리 과정이 필요하다.
Casting rolls used as work rolls for hot rolling require heat treatment processes such as annealing, austenitizing, quenching, and tempering to impart material properties.

본 발명의 목적은 롤의 스케일을 제거하며 쿠엔칭을 실시함으로써 쿠엔칭 소요시간을 단축시킬 수 있는 롤의 쿠엔칭장치를 제공하는 것이다.
An object of the present invention is to provide a quenching apparatus for a roll which can shorten the time required for quenching by removing the scale of the roll and performing quenching.

상기 목적을 달성하기 위한 본 발명에 따른 롤의 쿠엔칭장치는 외부 동력을 받아 회전하며, 서로 간격을 두고 좌우로 배열되어 그 사이에 열처리 과정의 롤을 올려 놓고 회전시키는 다수개의 회전롤들; 및 상기 회전롤들의 표면에 다수개로 돌출 형성되는 돌기들;을 특징으로 한다.Quenching device of the roll according to the present invention for achieving the above object is rotated by an external power, arranged in a left and right spaced apart from each other a plurality of rotating rolls to place the roll of the heat treatment process therebetween; And protrusions protruding from the surface of the rotating rolls.

상기 회전롤들은 상기 롤에서 축부를 제외한 전체 부위와 접하도록 형성됨이 바람직하다.The rotating rolls are preferably formed to contact the entire portion of the roll except the shaft portion.

또, 상기 돌기들은 다각형 모양으로 돌출 형성됨이 좋다.In addition, the protrusions may be formed to protrude in a polygonal shape.

또, 상기 돌기들은 호형(弧形) 모양으로 돌출 형성될 수 있다.In addition, the protrusions may be formed to protrude in an arc shape.

또, 상기 돌기들은 경도가 상기 롤의 경도보다 높게 형성됨이 바람직하다.
In addition, the protrusions are preferably formed of a hardness higher than the hardness of the roll.

본 발명에 의해, 롤의 쿠엔칭 시간(냉각 시간)이 크게 단축됨으로써 조업 효율성이 크게 향상된다.According to the present invention, the quenching time (cooling time) of the roll is greatly shortened, and operation efficiency is greatly improved.

또한, 기존 보다 경도가 향상되어 우수한 성능을 갖는 롤 제품을 얻을 수가 있다.
In addition, it is possible to obtain a roll product having excellent performance by improving the hardness than conventional.

도 1은 본 발명의 롤의 쿠엔칭장치가 롤을 올려놓고 쿠엔칭하는 모습을 나타낸 도면이다.
도 2는 본 발명의 롤의 쿠엔칭장치를 나타낸 사시도이다.
도 3은 본 발명의 롤의 쿠엔칭장치가 쿠엔칭하는 모습의 일부를 확대하여 나타낸 도면이다.
1 is a view showing a state in which the quenching device of the roll of the present invention puts the roll on the quenching machine.
2 is a perspective view showing a quenching device of the roll of the present invention.
Fig. 3 is an enlarged view of a part of the state in which the quenching device of the roll of the present invention quenchs.

이하, 본 발명의 바람직한 실시예를 첨부한 도면을 참조하여 상세히 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명의 롤의 쿠엔칭장치가 롤을 올려놓고 쿠엔칭하는 모습을 나타낸 도면, 도 2는 본 발명의 롤의 쿠엔칭장치를 나타낸 사시도이다.BRIEF DESCRIPTION OF THE DRAWINGS The figure which showed the state which the quenching apparatus of the roll of this invention puts a quenching on a roll, and FIG. 2 is a perspective view which shows the quenching apparatus of the roll of this invention.

도 3은 본 발명의 롤의 쿠엔칭장치가 쿠엔칭하는 모습의 일부를 확대하여 나타낸 도면이다.Fig. 3 is an enlarged view of a part of the state in which the quenching device of the roll of the present invention quenchs.

도면에 나타낸 바와 같이, 본 발명의 롤의 쿠엔칭장치는 다수개의 회전롤들(111,113)을 구비한다.As shown in the figure, the quenching apparatus of the roll of the present invention is provided with a plurality of rotating rolls (111, 113).

회전롤들(111,113)은 서로 간격을 두고 좌우로 배열한 형태를 이루어 그 사이에 열처리 과정의 롤(1)을 올려 놓고 회전시켜 냉각을 실시한다.The rotary rolls 111 and 113 form a shape arranged side by side at intervals from each other to rotate the rolls 1 of the heat treatment process therebetween to perform cooling.

예컨대, 회전롤들(111,113)은 그 사이에 어닐링(Annealing)과 오스테나이징(Austenitizing)을 거친, 열간압연용 워크롤로 사용되는 고속도 공구강 롤(1)을 올려 놓고 회전시켜 공냉을 실시한다.For example, the rotary rolls 111 and 113 are placed on a high speed tool steel roll 1 used as a hot rolled work roll, which has undergone annealing and austenitizing, and is then rotated to perform air cooling.

회전롤들(111,113)은 동일 방향으로 동일 속도로 회전하여 롤(1)을 회전시키며, 구동모터(미도시)로부터 동력을 전달받아 회전한다.The rotary rolls 111 and 113 rotate at the same speed in the same direction to rotate the roll 1 and rotate by receiving power from a driving motor (not shown).

회전롤들(111,113)은 축에 구동모터를 각각 장착해서 동력을 전달받아 회전할 수 있다.The rotary rolls 111 and 113 may be rotated by receiving a power by mounting a driving motor to the shaft, respectively.

이와 달리, 회전롤들(111,113)은 기어열이나 체인을 사이에 두고 1개의 구동모터로부터 동력을 전달받아 회전할 수 있다.On the contrary, the rotary rolls 111 and 113 may rotate by receiving power from one drive motor with a gear train or a chain interposed therebetween.

구동모터는 원격지에 설치되는 것 보다는 회전롤(111,113)을 장착해서 바닥으로부터 지지하는 설치대(115)에 설치되어 회전롤(111,113)에 동력을 전달함이 좋다.The drive motor is installed on the mounting base 115 to support from the bottom by mounting the rotary rolls (111, 113) rather than being installed in a remote location is good to transfer power to the rotary rolls (111, 113).

이와 같은 회전롤들(111,113)의 표면에는 돌기들(121)이 다수개로 돌출 형성된다.The protrusions 121 are protruded in plural from the surfaces of the rotary rolls 111 and 113.

돌기들(121)은 행열이 지그재그를 이루도록 배열되어 회전롤들(111,113)의 표면을 거칠게 만든다.The protrusions 121 are arranged in a zigzag fashion to roughen the surfaces of the rotary rolls 111 and 113.

이와 달리, 돌기들(121)은 무작위로 산포되어 회전롤들(111,113)의 표면을 거칠게 만들 수 있다.On the contrary, the protrusions 121 may be randomly scattered to roughen the surfaces of the rotary rolls 111 and 113.

이러한 돌기들(121)은 삼각형, 정사각형이나 직사각형 또는 사다리꼴 등을 포함하는 사각형, 오각형 등 다양한 다각형 모양으로 돌출 형성되어 회전롤들(111,113)의 표면을 거칠게 만들 수 있다.The protrusions 121 may protrude into various polygonal shapes such as triangles, pentagons, and the like including triangles, squares, rectangles, or trapezoids to roughen the surfaces of the rotary rolls 111 and 113.

이와 달리, 돌기들(121)은 반원이거나 반원 아래 또는 그 위의 호(弧) 등 다양한 호형(弧形) 모양으로 돌출 형성되어 회전롤들(111,113)의 표면을 거칠게 만들 수 있다.On the contrary, the protrusions 121 may be formed in a semicircle or protruded into various arc shapes such as an arc below or above the semicircle to roughen the surfaces of the rotary rolls 111 and 113.

이때, 회전롤들(111,113)은 롤(1)에서 축부(1a)를 제외한 부위(1b) 전체와 접하도록 형성되어 돌기들(121)의 성능이 롤(1) 전체에 골고루 미칠 수 있도록 한다.At this time, the rotary rolls 111 and 113 are formed to be in contact with the entire portion 1b except for the shaft portion 1a in the roll 1 so that the performance of the protrusions 121 may be evenly applied to the entire roll 1.

이와 같이 회전롤들(111,113)의 표면을 거칠게 만드는 돌기들(121)은 쿠엔칭을 위해 회전롤들(111,113)을 따라 회전하는 롤(1)의 표면을 긁어 롤(1)의 표면에 생성되는 스케일을 탈락시킨다.The protrusions 121 which roughen the surface of the rotary rolls 111 and 113 in this manner scrape the surface of the roll 1 that rotates along the rotary rolls 111 and 113 for quenching and are generated on the surface of the roll 1. Drop the scale.

즉, 돌기들(121)은 고온의 롤(1)이 공기와 접해 표면에 생성되는 산화철 스케일을 효과적으로 긁어내 탈락시킨다.That is, the protrusions 121 effectively scrape off the iron oxide scale generated on the surface by contacting air with the hot roll 1.

스케일은 롤(1)과 대기와의 접촉을 막아 롤(1) 내부의 열이 방출되는데 단열의 역할을 하기 때문에 원활한 냉각을 방해해 롤(1)의 품질을 저하시키는 원인을 제공한다.The scale prevents contact between the roll 1 and the atmosphere to release heat inside the roll 1, which acts as a thermal insulation, thereby preventing smooth cooling and providing a cause of degrading the quality of the roll 1.

롤(1)을 냉각하는 동안 돌기들(121)은 이와 같은 스케일을 떼어냄으로써 대기 중으로 열의 이동이 원활하게 이루어지도록 하여 롤(1)의 냉각이 효과적으로 이루어지도록 한다.While cooling the roll 1, the protrusions 121 remove the scale such that the heat is smoothly moved to the atmosphere so that the cooling of the roll 1 is effectively performed.

상술한 바와 같이, 본 발명은 냉각하는 동안 롤(1)의 표면에 생성되는 스케일을 효과적으로 탈락시켜 원활한 냉각이 이루어지도록 함으로써 롤(1)의 냉각시간을 크게 단축시킨다.As described above, the present invention greatly shortens the cooling time of the roll 1 by effectively dropping the scale generated on the surface of the roll 1 during cooling to achieve smooth cooling.

이 때문에, 조업 효율성이 크게 향상된다.For this reason, operation efficiency improves significantly.

또한, 롤(1)은 기존 보다 경도가 향상되는 등 물성이 좋아져 우수한 성능을 얻을 수 있다.In addition, the roll (1) is improved in physical properties, such as improved hardness than the conventional can obtain excellent performance.

한편, 스케일 탈락 후 재생성되는 스케일이나 롤(1) 표면 상의 흔적은 열처리 후 황삭을 실시함으로 인해 제거되기 때문에 완제품에서는 전혀 영향을 끼치지 않는다.On the other hand, since the traces on the surface of the scale or the roll 1 which are regenerated after the scale dropout are removed by roughing after the heat treatment, the finished product has no effect at all.

또한, 상기 돌기들(121)은 쉽게 마모되지 않도록 경도가 상기 롤(1)의 경도 보다 높게 형성됨이 바람직하다.
In addition, it is preferable that the protrusions 121 have a hardness higher than that of the roll 1 so that they are not easily worn.

1:롤
1a:축부
1b:축부 외 부위
111,113:회전롤
115:설치대
121:돌기
1: roll
1a: shaft
1b: Outside the shaft
111,113: Rolling Roll
115: mounting base
121: protrusion

Claims (5)

외부 동력을 받아 회전하며, 서로 간격을 두고 좌우로 배열되어 그 사이에 열처리 과정의 롤을 올려 놓고 회전시키는 다수개의 회전롤들; 및
상기 회전롤들의 표면에 다수개로 돌출 형성되는 돌기들;을 포함하는, 롤의 쿠엔칭장치.
A plurality of rotating rolls which rotate by receiving external power and are arranged left and right at a distance from each other to place and rotate a roll of a heat treatment process therebetween; And
And a plurality of protrusions protruding from the surface of the rotating rolls.
제1항에 있어서,
상기 회전롤들은 상기 롤에서 축부를 제외한 부위 전체와 접하도록 형성되는, 롤의 쿠엔칭장치.
The method of claim 1,
The rotating rolls are formed in contact with the entire portion of the roll except the shaft portion, the quenching device of the roll.
제1항에 있어서,
상기 돌기들은 다각형 모양으로 돌출 형성되는, 롤의 쿠엔칭장치.
The method of claim 1,
The projections are formed in the shape of a polygonal protrusion, roll quenching apparatus.
제1항에 있어서,
상기 돌기들은 호형(弧形) 모양으로 돌출 형성되는, 롤의 쿠엔칭장치.
The method of claim 1,
The projections of the roll is a quenching apparatus of the roll is formed in an arc shape.
제1항에 있어서,
상기 돌기들은 경도가 상기 롤의 경도 보다 높게 형성되는, 롤의 쿠엔칭장치.
The method of claim 1,
The projections are formed in the quenching apparatus of the roll, the hardness is formed higher than the hardness of the roll.
KR1020110008733A 2011-01-28 2011-01-28 Device for quenching roll KR101185934B1 (en)

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KR1020110008733A KR101185934B1 (en) 2011-01-28 2011-01-28 Device for quenching roll

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KR20120087504A KR20120087504A (en) 2012-08-07
KR101185934B1 true KR101185934B1 (en) 2012-09-25

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6264763U (en) 1985-10-15 1987-04-22
JP2001159419A (en) 1999-12-01 2001-06-12 Sasakura Engineering Co Ltd Structure of rotary type cooling roller
KR100843944B1 (en) 2006-12-21 2008-07-04 주식회사 포스코 Apparatus for removing alien substance on strip in plating utility

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6264763U (en) 1985-10-15 1987-04-22
JP2001159419A (en) 1999-12-01 2001-06-12 Sasakura Engineering Co Ltd Structure of rotary type cooling roller
KR100843944B1 (en) 2006-12-21 2008-07-04 주식회사 포스코 Apparatus for removing alien substance on strip in plating utility

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