JP2653279B2 - Rail heat treatment equipment - Google Patents

Rail heat treatment equipment

Info

Publication number
JP2653279B2
JP2653279B2 JP3210366A JP21036691A JP2653279B2 JP 2653279 B2 JP2653279 B2 JP 2653279B2 JP 3210366 A JP3210366 A JP 3210366A JP 21036691 A JP21036691 A JP 21036691A JP 2653279 B2 JP2653279 B2 JP 2653279B2
Authority
JP
Japan
Prior art keywords
rail
cooling
longitudinal direction
support
refrigerant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP3210366A
Other languages
Japanese (ja)
Other versions
JPH0533057A (en
Inventor
知夫 堀田
哲成 井出
譲 片岡
謙一 酒井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to JP3210366A priority Critical patent/JP2653279B2/en
Publication of JPH0533057A publication Critical patent/JPH0533057A/en
Application granted granted Critical
Publication of JP2653279B2 publication Critical patent/JP2653279B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は軌条熱処理装置の改良
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a rail heat treatment apparatus.

【従来技術】[Prior art]

【0002】圧延直後のオ−ステナイト領域の温度を有
している軌条頭部を急冷し、耐摩耗性の微細パ−ライト
組織を形成させるとともに、軌条長手方向に品質むらの
少ない均一な軌条を製造するための熱処理装置として、
特公平2−13012号公報に記載されたような軌条熱
処理装置が知られている。
[0002] A rail head having a temperature in the austenite region immediately after rolling is rapidly cooled to form a fine pearlite structure having abrasion resistance and to form a uniform rail with less quality unevenness in the rail longitudinal direction. As a heat treatment device for manufacturing,
A rail heat treatment apparatus as described in JP-B-2-13012 is known.

【0003】この装置は、軌条の伸延方向と直角方向に
移動するチェ−ントランスファ等の積載式搬送装置を有
し、この搬送装置の途中に軌条長さ分の冷却帯を複数並
列的に配置したもので、積載式搬送装置により正立状態
で搬送される途中の複数の軌条を、冷却帯位置で停止且
つ拘束・位置決めし、各軌条の頭部及び足部を噴射ヘッ
ダから冷却気体を噴射することにより冷却するものであ
る。
[0003] This apparatus has a loading type transfer device such as a chain transfer which moves in a direction perpendicular to the direction in which the rail extends, and a plurality of cooling zones corresponding to the rail length are arranged in parallel in the middle of this transfer device. A plurality of rails that are being transported in an upright state by the load-type transport device are stopped, restrained, and positioned at the cooling band position, and the head and feet of each rail are injected with cooling gas from the injection header. By doing so, it cools.

【0004】[0004]

【発明が解決しようとする課題】しかしながら、このよ
うな従来の熱処理装置では、積載式搬送装置であるトラ
ンスファ等により軌条足裏部の一部が常にカバ−される
ため、この部分に冷却用の気体が当らず、所定の冷却速
度が得られないという問題がある。そして、このような
冷却速度の小さい部分が生じる結果、軌条足裏部の品質
が不均一化してしまうという欠点があった。また、一般
に圧延完了直後の軌条は横立状態(一方の頭側部と足部
の側端部を下にした横倒しの状態)にあるが、この軌条
を冷却する場合、冷却品質の安定化と冷却装置の構造の
簡素化を図るために正立状態(足裏部を下にした状態)
で冷却する必要がある。したがって、圧延ラインに直結
した軌条熱処理では、圧延ラインから横立状態で搬送さ
れてきた軌条を正立状態に転回した後、冷却する必要が
あり、しかも、このような転回・搬送及び冷却という一
連の工程を軌条各部の均一冷却を確保しつつ円滑且つ効
率的に行う必要がある。
However, in such a conventional heat treatment apparatus, a part of the rail foot sole is always covered by a transfer or the like which is a loading type transfer apparatus. There is a problem that a predetermined cooling rate cannot be obtained because gas does not strike. Then, as a result of such a portion having a low cooling rate, there is a disadvantage that the quality of the rail foot sole becomes uneven. Also general
The rails immediately after rolling are in the upright position (one head side and one foot)
Side down with the side edge down), but this rail
Cooling, the cooling quality must be stabilized and the structure of the cooling device
Upright state for simplicity (sole down)
Need to be cooled. Therefore, directly connected to the rolling line
In the rail heat treatment,
It is necessary to cool the rail after turning it upright.
Yes, and it is one of such turning / transporting and cooling.
Smooth and efficient continuous process while ensuring uniform cooling of each part of the rail
It needs to be done efficiently.

【0005】本発明はこのような従来の問題に鑑み、
延ラインから搬送されてきた横立状態にある軌条を正立
状態で冷却するに当り、軌条の転回・搬送及び冷却とい
う一連の工程を軌条各部の均一冷却を確保しつつ、とり
わけ軌条足裏部を均一な冷却速度で冷却し、軌条足部長
手方向の均一な品質を確保しつつ、円滑且つ効率的に行
ことができる装置の提供をその目的とする。
[0005] The present invention has been made in view of such conventional problems, pressure
Erect the rails that are transported from the extension line and are in the upright position
In cooling in the state, rolling, transport and cooling of the rail are called
A series of steps are taken while ensuring uniform cooling of each part of the rail.
In other words, the soles of the rails are cooled at a uniform cooling rate, and smooth and efficient while maintaining uniform quality in the longitudinal direction of the rails.
Providing apparatus capable cormorants and an object.

【0006】[0006]

【課題を解決するための手段】このような目的を達成す
るため本発明は、圧延ラインから横立状態で搬送されて
きた軌条を正立状態で冷却するための軌条熱処理装置で
あって、軌条伸延方向に軌条を搬送する搬送装置と、こ
の搬送装置に隣接して平行に設けられる冷却装置と、
記搬送装置と冷却装置間の長手方向で適宜間隔をおいて
複数設けられ、搬送装置と冷却装置間で軌条を転回させ
ながら搬送する転回・搬送装置とからなり、前記冷却装
置が、上下昇降可能な軌条頭頂部冷却用および軌条頭側
部冷却用の各冷媒噴射ヘッダーと、装置の長手方向で適
宜間隔をおいて設けられる軌条足部支持・拘束装置と、
軌条支持位置の下方に配され、装置長手方向における前
記転回・搬送装置の配置部において不連続部を有する
条足裏部冷却用の冷媒噴射ヘッダーと、前記軌条足部支
持・拘束装置または軌条足裏部冷却用の冷媒噴射ヘッダ
ーを軌条長手方向にオシレーションさせるためのオシレ
ーション機構とから構成されるとともに冷却装置を構
成する前記各軌条足部支持・拘束装置が、軌条足裏部の
両側端部を支持する支持部と、該支持部との間で軌条足
部の両側端部を挟持する一対の爪を有しており、 前記各
転回・搬送装置が、軌条を保持すべき断面L字状の受面
を備えた保持体を有し、該保持体が冷却装置長手方向と
直交する方向に回動可能であるとともに、支持機構を介
して昇降可能で且つ前記搬送装置−冷却装置間で移動可
能であることを特徴とする軌条熱処理装置である。
SUMMARY OF THE INVENTION In order to achieve such an object, the present invention relates to a method in which a sheet is conveyed from a rolling line in an upright state.
A rail heat treatment device to cool the rails upright
There are a conveying device for conveying the rail in the rail extending direction, and a cooling device provided in parallel adjacent to the transport device, before
At an appropriate interval in the longitudinal direction between the transfer device and the cooling device
A plurality of rolling / conveying devices are provided, which convey while rotating the rail between the conveying device and the cooling device, and the cooling device is a refrigerant for cooling the top of the rail that can be moved up and down and for cooling the side of the rail head. Injection header, rail foot support and restraint device provided at appropriate intervals in the longitudinal direction of the device,
It is located below the rail support position and is located in front of the device in the longitudinal direction.
A refrigerant injection header for cooling a rail foot and a foot having a discontinuous portion in an arrangement portion of the turning / transporting device, and a refrigerant injection header for cooling the rail foot support and restraining device or the rail foot and the foot. is constituted from a rail longitudinal direction oscillation is to oscillation mechanisms for Rutotomoni, configured with a cooling device
Each of the rail foot support / restraining devices to be formed is a rail foot sole.
A supporting portion for supporting both end portions, and a rail foot between the supporting portion;
Both ends of the section has a pair of claws for pinching the, each
Receiving surface with L-shaped cross section where the turning / transporting device should hold the rail
Having a holder with the cooling device longitudinal direction and
It is rotatable in the direction perpendicular to
And can be moved up and down between the transfer device and the cooling device.
This is a rail heat treatment apparatus characterized in that it is capable of heating.

【0007】[0007]

【作用】素材軌条は圧延後の状態のまま、即ち横立状態
のまま搬送装置により冷却装置の側方に搬送される。素
材軌条は、転回・搬送装置により保持され、正立状態に
転回されつつ冷却装置内へ移される。すなわち、転回・
搬送装置は、その保持体が断面L字状の受面で軌条を保
持して持ち上げた後、冷却装置側に移動することにより
軌条を搬送するとともに、この搬送過程で保持体を略9
0°回動させることにより、受面に保持された軌条を略
90°、すなわち横立状態から正立状態に転回させる。
転回・搬送装置により軌条が冷却装置に移される際は、
軌条頭頂部冷却用および軌条頭側部冷却用の各冷媒噴射
ヘッダーは、軌条の転回、搬送の妨げとならないよう上
方に退避した状態にしておく。正立状態の軌条を保持し
た保持体は、冷却処理位置まで移動した後、下降し、軌
条足部支持・拘束装置を構成する支持部上に軌条足部の
両側端部を支持させる。しかる後、同装置の爪を作動さ
せ、この爪と前記支持部との両で軌条足部の両側端部を
挟持・拘束し、軌条を冷却装置の中心に位置決め、固定
する。この固定された状態で、軌条足裏部はその長手方
向数ヶ所における両側端部が軌条足部支持・拘束装置の
支持部に支持(カバー)されているだけであり、したが
って、この部分を除く足裏部全長に冷媒が直接接触でき
るような状態にある。このような軌条固定完了後、転回
・搬送装置の保持体は冷却処理位置から退避し、軌条の
冷却処理完了を待つ。上方に退避していた軌条頭頂部冷
却用および軌条頭側部冷却用の各冷媒噴射ヘッダーが冷
却処理位置まで下降した後、軌条頭頂部冷却用、軌条頭
側部冷却用および軌条足裏部冷却用の各冷媒噴射ヘッダ
ーのノズルから空気等の冷媒が軌条の各部に噴射され、
軌条が冷却される。この冷却中、軌条足部支持・拘束装
置または軌条足裏部冷却用の冷媒噴射ヘッダーをオシレ
ーション機構により軌条長手方向にオシレーション(往
復移動)させる。
The material rail is conveyed to the side of the cooling device by the conveying device in the state after rolling, that is, in the upright state. The material rail is held by the turning / transporting device, and is transferred into the cooling device while being turned upright. That is,
In the transfer device, the rail is held by a receiving surface having an L-shaped cross section.
And lift it, then move it to the cooling device side.
The rail is transported, and during this transport process, the holder is moved by approximately 9
By rotating 0 °, the rail held on the receiving surface is substantially
90 °, that is, from the upright state to the upright state.
When the rail is transferred to the cooling device by the turning and conveying device,
Each of the refrigerant injection headers for cooling the top of the rail and for cooling the top of the rail is retracted upward so as not to hinder the rotation and conveyance of the rail. Hold the erect rail
After moving to the cooling position, the holder
Of the rail foot on the support that constitutes the foot foot support / restraint device
Support both ends. Then, activate the claw of the device.
Both sides of the rail foot with both the claw and the support.
Hold and restrain , position and fix the rail at the center of the cooling device. In this fixed state, the rail soles are
The opposite ends of the rails at several locations
It is only supported (covered) by the support,
Therefore, the refrigerant can directly contact the entire length of the sole except this part.
It is in such a state. After the completion of the fixing of the rail, the holder of the turning / transporting device is retracted from the cooling position and waits for the completion of the cooling of the rail. After each of the refrigerant injection headers for cooling the top of the rail and for cooling the top of the rail, which have been retracted upward, descend to the cooling processing position, and then cool the top of the rail, cool the top of the rail, and cool the bottom of the rail. A refrigerant such as air is injected from the nozzle of each refrigerant injection header for each part of the rail,
The rail is cooled. During the cooling, the rail foot support / restraint device or the refrigerant injection header for cooling the rail foot sole is oscillated (reciprocated) in the rail longitudinal direction by the oscillation mechanism.

【0008】ここで、冷却により付与される軌条硬度の
軌条長手方向における品質むらについて考察すると、図
10に示すように軌条足裏部冷却用の冷媒噴射ヘッダ−
4c(4aは軌条頭頂部冷却用の冷媒噴射ヘッダ−)の
不連続部が距離a分だけある場合、従来装置ではヘッダ
−により冷却される部分と冷却されない部分とが軌条A
の長手方向に混在し、冷却により硬度が高い部分と低い
部分が存在し、これが品質むらとなる。これに対して本
発明の装置では、図10に示すように軌条A(或いは冷
媒噴射ヘッダ−4c)を長手方向に一定距離bだけオシ
レ−ションさせながら冷却するため、冷媒噴射ヘッダ−
4cの不連続部があっても軌条全長に均一に冷媒が当
り、軌条長手方向の品質むらが生じることを回避でき
る。
Here, considering the quality unevenness in the rail longitudinal direction of the rail hardness given by cooling, as shown in FIG.
When the discontinuous portion of 4c (4a is a refrigerant injection header for cooling the top of the rail) is only a distance a away, the conventional apparatus has a track A that is cooled by the header and a part that is not cooled.
Are mixed in the longitudinal direction, and there are a portion having a high hardness and a portion having a low hardness due to cooling, and this causes uneven quality. On the other hand, in the apparatus of the present invention, as shown in FIG. 10, the rail A (or the refrigerant injection header-4c) is cooled while being oscillated by a predetermined distance b in the longitudinal direction.
Even if there is a discontinuous portion 4c, the refrigerant uniformly hits the entire length of the rail, so that it is possible to avoid the occurrence of quality unevenness in the rail longitudinal direction.

【0009】実際に、圧延を終えオ−ステナイト域温度
の熱を保有する50N軌条(C:0.77wt%,S
i:0.25wt%,Mn:0.89wt%,P:0.
017wt%,S:0.007wt%)を、図10のよ
うに冷媒噴射ヘッダ−の不連続部が存在する状態にて冷
却した場合の足裏部の硬度は、近似的に次の関係式にて
表すことができる。 HV(h)≒0.5×t+HV(n) t=T×(1−a/b) 但し、HV(h):冷媒噴射ヘッダ−不連続部のHV硬
度 HV(n):無冷却(自然冷却)による軌条のHV硬度 t:冷媒噴射ヘッダ−不連続部の冷却時間 T:冷媒噴射ヘッダ−連続部の冷却時間 a:冷媒噴射ヘッダ−不連続部の長さ b:オシレ−ションの長さ
[0009] Actually, a 50N rail (C: 0.77 wt%, S
i: 0.25 wt%, Mn: 0.89 wt%, P: 0.
017 wt%, S: 0.007 wt%) is cooled in a state where the discontinuous portion of the refrigerant injection header exists as shown in FIG. 10. Can be expressed as HV (h) ≒ 0.5 × t + HV (n) t = T × (1−a / b) where HV (h): HV hardness of refrigerant injection header−discontinuous portion HV (n): No cooling (natural) HV hardness of rail by cooling) t: Cooling time of refrigerant injection header-discontinuous part T: Cooling time of refrigerant injection header-continuous part a: Length of refrigerant injection header-discontinuous part b: Length of oscillation

【0010】これによれば、冷媒噴射ヘッダ−の不連続
部の長さa:200mm、冷却時間T:120秒の時、
オシレ−ションなしの場合、冷媒噴射ヘッダ−の連続部
と不連続部ではHV60の硬度差が発生するが、オシレ
−ションを例えばb:1000mmで行うことにより、
冷媒噴射ヘッダ−の連続部と不連続部の硬度差をHV1
2まで小さくすることが可能である。
According to this, when the length a of the discontinuous portion of the refrigerant injection header is 200 mm and the cooling time T is 120 seconds,
When there is no oscillation, a hardness difference of HV60 occurs between the continuous portion and the discontinuous portion of the refrigerant injection header. However, by performing the oscillation at, for example, b: 1000 mm,
The hardness difference between the continuous part and the discontinuous part of the refrigerant injection header is HV1
It is possible to reduce it to two.

【0011】上述のような冷却処理完了後、軌条頭頂部
冷却用および軌条頭側部冷却用の各冷媒噴射ヘッダーを
上方に退避させ、転回・搬送装置の保持体を冷却処理位
置にを移動させて再び軌条を持ち上げ、保持体を略90
°回動させることにより軌条を正立状態から横立状態に
転回させつつ、搬送装置上に搬送する。この搬送装置
は、上述した軌条搬入に用いた搬送装置でもよいし、別
途設けられる搬出専用の搬送装置でもよい。
After completion of the cooling process as described above, each of the refrigerant injection headers for cooling the top of the rail and for cooling the side of the rail is retracted upward, and the holder of the turning / transporting device is cooled.
And lift the rail again , and move the holder approximately 90
By rotating, the rail is turned from the erect state to the sideways state, and is conveyed onto the conveying device. This transfer device may be the transfer device used for the above-described rail transfer, or may be a separately provided transfer-only transfer device.

【0012】[0012]

【実施例】図1ないし図3は本発明装置の一実施例を示
すものである。本発明の軌条熱処理装置は、軌条伸延方
向に軌条を搬送する搬送装置1と、この搬送装置に隣接
して平行に設けられる冷却装置2と、前記搬送装置と冷
却装置間で軌条を転回させながら搬送する複数の転回・
搬送装置3とからなっている。
1 to 3 show an embodiment of the apparatus according to the present invention. The rail heat treatment apparatus of the present invention includes a transport device 1 that transports a rail in a rail extension direction, a cooling device 2 that is provided in parallel adjacent to the transport device, and a rail that is turned between the transport device and the cooling device. Multiple turns to transport
And a transfer device 3.

【0013】前記搬送装置1は、複数のテ−ブルロ−ラ
23を有している。前記冷却装置2は、上下昇降可能な
軌条頭頂部冷却用および軌条頭側部冷却用の各冷媒噴射
ヘッダ−4aおよび4bと、装置の長手方向で適宜間隔
をおいて設けられる複数の軌条足部支持・拘束装置6
と、この装置による軌条支持位置の下方に配される軌条
足裏部冷却用の冷媒噴射ヘッダ−4cと、前記軌条足部
支持・拘束装置6を軌条長手方向にオシレ−ションさせ
るためのオシレ−ション機構5とから構成されている。
前記各冷媒噴射ヘッダ−4a,4b,4cはそれぞれ冷
媒噴射ノズルを備えている。
The transport device 1 has a plurality of table rollers 23. The cooling device 2 includes a plurality of refrigerant injection headers -4a and 4b for cooling the top of the rail and for cooling the side of the rail that can be moved up and down, and a plurality of rail feet provided at appropriate intervals in the longitudinal direction of the device. Support / restraint device 6
A refrigerant injection header 4c for cooling the rail foot sole disposed below the rail support position by this device, and an oscillator for oscillating the rail foot support / restraining device 6 in the rail longitudinal direction. And an operation mechanism 5.
Each of the refrigerant injection headers -4a, 4b and 4c has a refrigerant injection nozzle.

【0014】前記冷却装置2の上部には架台16が設け
られ、この架台16に昇降装置17(シリンダ装置)を
介して昇降枠18が上下昇降可能に保持されている。前
記軌条頭頂部冷却用および軌条頭側部冷却用の各冷媒噴
射ヘッダ−4aおよび4bは、前記昇降枠18に取付け
固定されている。
A gantry 16 is provided above the cooling device 2, and a gantry 18 is held on the gantry 16 via a lifting device 17 (cylinder device) so as to be able to move up and down. The coolant injection headers 4a and 4b for cooling the top of the rail and for cooling the top of the rail are mounted and fixed to the lifting frame 18.

【0015】前記軌条足部支持・拘束装置6は、軌条足
裏部の両側端部を支持する支持部61と、これら支持部
61との間で軌条足部の両側端部を挾持する一対の爪1
5を有している。図11は、その詳細を軌条足部の両側
端部を拘束した状態で示している。この軌条足部支持・
拘束装置6は、装置長手方向の4箇所(通常、1.5〜
5m程度の間隔)に配置されるとともに、装置下部に配
置された支持枠19に固定されている。この支持枠19
は後述するオシレーション機構5を構成するもので、基
台22上を転動する走行ローラ21により装置長手方向
で進退できるように構成されている。
The rail foot support / restraint device 6 includes a rail foot
A supporting portion 61 for supporting both end portions of the back portion,
61 and a pair of claws 1 for sandwiching both ends of the rail foot between
Five. Figure 11 shows the details on both sides of the rail foot
It is shown with the ends constrained. This rail foot support
The restraining device 6 has four positions in the longitudinal direction of the device (normally 1.5 to
(At an interval of about 5 m) and fixed to a support frame 19 arranged at the lower part of the apparatus. This support frame 19
Is a component of an oscillation mechanism 5 to be described later, and is configured to be able to advance and retreat in the longitudinal direction of the apparatus by a traveling roller 21 rolling on a base 22.

【0016】前記軌条足裏部冷却用の冷媒噴射ヘッダ−
4cは、軌条足部支持・拘束装置6による軌条支持位置
の下方に配置され、各転回・搬送装置3の配置部におい
て不連続部を有している。
[0016] A refrigerant injection header for cooling the rail soles
4 c is disposed below the rail support position by the rail foot support / restraint device 6, and has a discontinuous portion at the location of each turning / transporting device 3.

【0017】前記支持枠19の装置長手方向一端側に
は、オシレ−ション機構5を構成するシリンダ装置20
が配され、その作動ロッドが支持枠19に連結されてい
る。このシリンダ装置20により支持枠19を装置長手
方向で往復動させ、前記軌条足部支持・拘束装置6を軌
条長手方向にオシレ−ションさせることができる。
A cylinder device 20 constituting the oscillation mechanism 5 is provided at one end of the support frame 19 in the device longitudinal direction.
, And the operating rod is connected to the support frame 19. The support frame 19 can be reciprocated in the longitudinal direction of the device by the cylinder device 20, and the rail foot supporting / restraining device 6 can be oscillated in the longitudinal direction of the rail.

【0018】前記転回・搬送装置3は、軌条を保持すべ
き断面L字状の受面70を備えた保持体7を有してお
り、本実施例では搬送装置1と冷却装置2間の3ヵ所に
適当な間隔をおいて設けられている。前記保持体7は冷
却装置長手方向と直交する方向に回動可能であるととも
に、支持機構を介して昇降可能で且つ前記搬送装置−冷
却装置間で移動可能に構成されている。
The turning / transporting device 3 has a holder 7 having a receiving surface 70 having an L-shaped cross section to hold a rail. They are provided at appropriate intervals in several places. The holder 7 is cold
And can rotate in the direction perpendicular to the longitudinal direction of the
In addition, the transfer device can be moved up and down through a support mechanism and
It is configured to be movable between rejecting devices.

【0019】図3は転回・搬送装置3の具体的な構造を
示すもので、装置は、リフタ−9により昇降自在な昇降
台8と、この昇降台8に対して搬送装置1と冷却装置2
間で移動可能に設けられた台車10と、この台車10を
駆動させるためのシリンダ装置12と、前記台車10の
先端部に回動可能に枢着14された前記保持体7と、こ
の保持体7を回動駆動させるシリンダ装置13とから構
成されている。なお、図において11は前記台車の走行
ロ−ラ、120は前記シリンダ装置12の作動ロッド、
130は前記シリンダ装置13の作動ロッドを示してい
る。
FIG. 3 shows a specific structure of the turning / transporting device 3. The device comprises a lift 8 which can be raised and lowered by a lifter 9, a transport device 1 and a cooling device 2 with respect to the lift 8.
A carriage 10 movably provided between the carriage 10, a cylinder device 12 for driving the carriage 10, the holding body 7 pivotally connected to a tip end of the carriage 10 so as to be rotatable, and the holding body And a cylinder device 13 for driving the rotation of the cylinder 7. In the drawing, 11 is a traveling roller of the truck, 120 is an operating rod of the cylinder device 12,
Reference numeral 130 denotes an operating rod of the cylinder device 13.

【0020】このような装置によれば、保持体7の受面
70により軌条を保持した状態で台車10を移動させる
ことにより軌条の搬送が可能であり、また、シリンダ装
置13を作動させ保持体7を略90°回動させることに
より、受面70に保持された軌条を略90°、すなわち
正立状態と横立状態間で自在に転回させることができ
る。前記保持体7は、テーブルローラ23や軌条足部支
持・拘束装置6との干渉を避けるため、リフター9によ
る昇降台8の昇降と台車10の移動とにより、図1中の
破線xで示される軌跡に沿って昇降及び移動し、軌条の
搬出入を行う。
According to such an apparatus, the rail can be conveyed by moving the carriage 10 while the rail is held by the receiving surface 70 of the holder 7, and the cylinder unit 13 is operated to operate the rail. By rotating the 7 approximately 90 °, the rail held on the receiving surface 70 can be freely rotated approximately 90 °, that is, between the upright state and the upright state. The holder 7 is indicated by a dashed line x in FIG. 1 by raising and lowering the elevator 8 and moving the carriage 10 by the lifter 9 in order to avoid interference with the table roller 23 and the rail foot support / restraining device 6. It moves up and down along the trajectory, and carries in and out the rail.

【0021】その他図面において、24は各冷媒噴射ヘ
ッダ−に空気等の冷媒を供給するための供給管、25は
これら供給管に設けられる流量調整弁、29は前記各供
給管24が冷媒の供給を受ける冷媒導管である。なお、
冷媒噴射ヘッダ−4a,4bの各供給管24は、これら
冷媒噴射ヘッダ−の昇降を可能とするため、その途中に
伸縮管部或いは可撓管部(図示せず)を有している。
In the other drawings, 24 is a supply pipe for supplying a refrigerant such as air to each refrigerant injection header, 25 is a flow control valve provided on these supply pipes, and 29 is a supply pipe for the refrigerant. Receiving refrigerant. In addition,
Each of the supply pipes 24 of the refrigerant injection headers 4a and 4b has a telescopic tube portion or a flexible tube portion (not shown) in the middle thereof so as to enable the refrigerant injection header to move up and down.

【0022】なお、本実施例では、軌条頭頂部冷却用の
冷媒噴射ヘッダ−4aと軌条頭側部冷却用の冷媒噴射ヘ
ッダ−4bを昇降枠18を介して一体的に昇降させるよ
うにしているが、場合によっては、両冷媒噴射ヘッダ−
を別々の昇降枠に取付け、それぞれ別個に昇降させ得る
ような構造とすることも可能である。
In this embodiment, the refrigerant injection header 4a for cooling the top of the rail and the refrigerant injection header 4b for cooling the top of the rail are integrally moved up and down via the lifting frame 18. However, in some cases, both refrigerant injection headers
Can be attached to separate lifting frames, so that they can be individually raised and lowered.

【0023】図4および図5は本発明の他の実施例を示
すもので、図1ないし図3の実施例が軌条を拘束する軌
条足部支持・拘束装置6を軌条長手方向にオシレ−ショ
ンさせるような構造としたのに対し、本実施例では軌条
足裏部冷却用の冷媒噴射ヘッダ−4cを軌条長手方向に
オシレ−ションさせるような構造としたものである。
FIGS. 4 and 5 show another embodiment of the present invention. In the embodiment shown in FIGS. 1 to 3, a rail foot supporting and restraining device 6 for restraining a rail is oscillated in the longitudinal direction of the rail. In contrast to this structure, in the present embodiment, the refrigerant injection header 4c for cooling the bottom of the rail is oscillated in the longitudinal direction of the rail.

【0024】この実施例では、走行ロ−ラ28により装
置長手方向で移動可能な門型の架台26を設け、この架
台26に冷媒噴射ヘッダ−4a,4bおよび4cを支持
させている。すなわち、軌条頭頂部冷却用および軌条頭
側部冷却用の各冷媒噴射ヘッダ−4a,4bは、架台2
6の上部に昇降装置17を介して昇降可能に保持された
昇降枠18に取付け固定されている。また、軌条足裏部
冷却用の冷媒噴射ヘッダ−4cは、支持部材27を介し
て架台26の側部に取付け固定されている。そして、前
記架台26にはオシレ−ション機構5を構成するシリン
ダ装置20の作動ロッドが連結されている。
In this embodiment, a gate-shaped gantry 26 movable in the longitudinal direction of the apparatus by a traveling roller 28 is provided, and the gantry 26 supports the refrigerant injection headers 4a, 4b and 4c. In other words, each of the refrigerant injection headers -4a and 4b for cooling the top of the rail and for cooling the top of the rail is mounted on the gantry 2.
6 is attached and fixed to a lifting frame 18 held up and down via a lifting device 17. The refrigerant injection header 4c for cooling the rail foot sole is mounted and fixed to the side of the gantry 26 via the support member 27. An operating rod of the cylinder device 20 constituting the oscillation mechanism 5 is connected to the gantry 26.

【0025】このような構造によれば、シリンダ装置2
0により架台26を軌条長手方向に往復動させることに
より、軌条足裏部冷却用の冷媒噴射ヘッダ−4cが軌条
長手方向でオシレ−ションされる。
According to such a structure, the cylinder device 2
By reciprocating the gantry 26 in the longitudinal direction of the rail according to 0, the refrigerant injection header 4c for cooling the bottom of the rail is oscillated in the longitudinal direction of the rail.

【0026】また、本実施例では各冷媒噴射ヘッダ−が
軌条長手方向で移動するため、供給管24の途中に前記
移動を可能ならしめるためフレキシブル管240が設け
られけられている。なお、本実施例における他の構成は
図1ないし図3に示される実施例と同様であるので、同
一の符号を付しその説明は省略する。
In this embodiment, since each refrigerant injection header moves in the longitudinal direction of the rail, a flexible pipe 240 is provided in the supply pipe 24 to enable the movement. Since other configurations in the present embodiment are the same as those in the embodiment shown in FIGS. 1 to 3, the same reference numerals are given and the description is omitted.

【0027】また、図6および図7は軌条足部支持・拘
束装置6の好ましい実施例を示すもので、爪15が当接
する軌条足部の被拘束部分の冷却を確保するため、爪1
5の内側に冷媒を供給できるような構造としたものであ
る。すなわち、軌条足部を拘束する爪15の部分には、
爪15の軌条当接面151に開口する複数の冷媒供給孔
30が形成され、さらに、爪15の前記軌条当接面15
1には、前記各冷媒供給孔30から複数方向に延びる溝
31が形成されている。この実施例では、軌条当接面1
51に溝31が格子状に形成され、各溝31の交差部に
冷媒供給孔30の開口が位置している。そして、各冷媒
供給孔30には図示しない供給管を通じて冷媒が供給さ
れ、この冷媒は溝31に沿って流れることにより、爪1
5が当接する軌条足部の被拘束部を冷却する。
FIGS. 6 and 7 show a preferred embodiment of the rail foot supporting / restraining device 6. In order to ensure cooling of the restrained portion of the rail foot to which the nail 15 contacts, the claw 1 is used.
5, so that a refrigerant can be supplied to the inside. That is, in the portion of the claw 15 that restrains the rail foot,
A plurality of coolant supply holes 30 are formed in the rail contact surface 151 of the claw 15, and the rail contact surface 15 of the claw 15 is further formed.
1 is formed with grooves 31 extending from the respective coolant supply holes 30 in a plurality of directions. In this embodiment, the rail contact surface 1
Grooves 31 are formed in a lattice shape in 51, and the opening of the coolant supply hole 30 is located at the intersection of each groove 31. Refrigerant is supplied to each of the refrigerant supply holes 30 through a supply pipe (not shown).
5 cools the constrained portion of the rail foot that contacts.

【0028】次に、本発明装置による軌条の冷却処理例
を図1ないし図3に示す装置を例に説明する。図8およ
び図9は、図1ないし図3に示される装置による軌条冷
却処理の手順を段階的に示したものである。
Next, an example of a rail cooling process by the apparatus of the present invention will be described with reference to the apparatus shown in FIGS. FIGS. 8 and 9 show the steps of the rail cooling process by the apparatus shown in FIGS. 1 to 3 step by step.

【0029】図8の(a)は、搬送装置1により軌条A
が圧延ラインから搬送されてきた状態を示している。こ
の状態から図8の(b),(c)に示すように転回・搬
送装置3の保持体7を横立状態にある軌条Aの下方に
動させ、これを上方に持ち上げるとともに、冷却装置2
方向に搬送する。図8の(d)に示されるように、この
搬送途中において保持体7を約90°回動させ、軌条A
を正立状態に転回させる。図8の(e)および図9の
(f)に示されるように軌条Aを冷媒噴射ヘッダー4c
の真上まで搬送し、次いで軌条支持位置まで下降させ、
軌条足裏部の両側端部を軌条足部支持・拘束装置6の支
持部61上に支持させる。この状態で、図9の(g)に
示されるように軌条足部支持・拘束装置6の開放状態に
あった爪15を作動させ、この爪15により前記支持部
61との間で軌条足部の両側端部を支持、拘束(挟持)
する。次いで図9の(h)に示されるように、保持体7
を冷却装置外方に退避させるとともに、昇降装置17に
より軌条頭頂部冷却用および軌条頭側部冷却用の冷媒噴
射ヘッダー4aおよび4bを下降させ、冷却処理位置に
位置させる。この状態で各冷媒噴射ヘッダー4a,4b
および4cのノズルから空気等の冷媒を軌条Aの各部に
噴射し、軌条の冷却処理を行う。そしてこの冷却中、シ
リンダ装置20により支持枠19を軌条長手方向で往復
動させることにより、軌条足部支持・拘束装置6および
これに拘束された軌条Aをその長手方向でオシレーショ
ンさせる。このようなオシレーションにより、図10に
示されるような軌条足裏部全体を均一な冷却速度で冷却
することができる。
FIG. 8A shows a rail A by the transfer device 1.
Indicates a state in which it has been conveyed from the rolling line. From this state, as shown in FIGS. 8 (b) and 8 (c), the holder 7 of the turning / transporting device 3 is moved below the rail A in the upright state, and is lifted upward. Together with the cooling device 2
Transport in the direction. As shown in FIG. 8D, the holder 7 is rotated by about 90 ° during the conveyance, and the rail A is moved.
Is turned upright. As shown in FIGS. 8 (e) and 9 (f), the rail A is connected to the refrigerant injection header 4c.
And then lowered to the rail support position ,
At both ends of the rail foot sole, support the rail foot support / restraint device 6.
It is supported on the holding part 61. In this state, by operating the pawl 15 has been in the open state of the railway foot support and restraint device 6 as shown in (g) of FIG. 9, the supporting portion by the claw 15
Supports and restrains (pinches) both ends of rail foot between 61
I do. Next, as shown in FIG.
Is retracted to the outside of the cooling device, and the elevating device 17 lowers the refrigerant injection headers 4a and 4b for cooling the top of the rail and for cooling the side of the rail, and positions them at the cooling processing position. In this state, each refrigerant injection header 4a, 4b
And a refrigerant such as air is injected from the nozzles of 4c and 4c to each part of the rail A to cool the rail. During this cooling, the support frame 19 is reciprocated in the longitudinal direction of the rail by the cylinder device 20, so that the rail foot support / restraining device 6 and the rail A restrained by the rail are oscillated in the longitudinal direction. By such an oscillation, the entire rail and foot sole as shown in FIG. 10 can be cooled at a uniform cooling rate.

【0030】なお、軌条頭部の熱処理に必要な所定の冷
却速度の設定は、軌条頭部と各冷媒噴射ヘッダ−4a,
4bとの間隔、および各冷媒噴射ヘッダ−から噴射され
る冷媒量の調整により行われる。軌条頭部と各冷媒噴射
ヘッダ−との間隔は、昇降枠18の高さ調整等により行
い、また、冷媒噴射量の調整は各供給管24に設けられ
た流量調整弁25で行う。また、軌条足裏部冷却用の冷
媒噴射ヘッダ−4cについても、供給管24の流量調整
弁25により冷媒噴射量の調整がなされる。軌条足裏部
の冷却は、軌条の曲り量を最小にするため、軌条頭部冷
却とのバランスを考慮してなされる。また、軌条の冷却
中、軌条上方に設けられた温度検出器(図示せず)によ
り軌条頭頂部の温度が検出され、この温度検出に基づき
所定の温度まで冷却した時点で流量調整弁25を閉じて
冷却を停止する。
The predetermined cooling rate required for the heat treatment of the rail head is determined by setting the rail head and each refrigerant injection header-4a,
4b and adjustment of the amount of refrigerant injected from each refrigerant injection header. The interval between the rail head and each of the refrigerant injection headers is adjusted by adjusting the height of the elevating frame 18 and the like, and the amount of refrigerant injection is adjusted by the flow control valves 25 provided in the supply pipes 24. Also, the refrigerant injection amount of the refrigerant injection header-4c for cooling the rail foot soles is adjusted by the flow adjustment valve 25 of the supply pipe 24. Cooling of the foot of the rail is performed in consideration of the balance with cooling of the rail head in order to minimize the amount of bending of the rail. During cooling of the rail, the temperature at the top of the rail is detected by a temperature detector (not shown) provided above the rail, and upon cooling to a predetermined temperature based on this temperature detection, the flow control valve 25 is closed. To stop cooling.

【0031】このような冷却処理完了後、図9の(i)
に示されるように、再び保持体7を冷却装置2内に進入
させ、保持体7により軌条Aの足部を支持する。しかる
後、軌条足部支持・拘束装置6の爪15を開放し、保持
体7で軌条Aを持ち上げ、図9の(j)に示されるよう
に軌条Aを横立状態に転回させつつ搬送装置1側に搬送
する。
After the completion of such a cooling process, FIG.
As shown in (2), the holding body 7 is allowed to enter the cooling device 2 again, and the foot of the rail A is supported by the holding body 7. Thereafter, the claw 15 of the rail foot support / restraint device 6 is released, the rail A is lifted by the holder 7, and the rail A is turned upside down as shown in FIG. Convey to one side.

【0032】なお、この例では搬送装置1により冷却処
理前後の軌条の搬入と搬出を行っているが、場合によっ
ては冷却装置2を挾んだ反対側に搬出専用の搬送装置を
設け、冷却処理後の軌条をこの搬出専用の搬送装置側に
移送するようにしてもよい。
In this example, the rails before and after the cooling process are loaded and unloaded by the transport device 1. In some cases, however, a transport device dedicated to unloading is provided on the opposite side of the cooling device 2 so that the cooling process is performed. The subsequent rail may be transferred to the side of the transfer device dedicated to unloading.

【0033】[0033]

【発明の効果】以上述べたように本発明装置によれば、
圧延ラインから搬送されてきた横立状態の軌条を正立状
態で冷却するに当り、軌条の転回・搬送及び冷却という
一連の工程を軌条各部の均一冷却を確保しつつ、円滑且
つ効率的に行うことができる。特に軌条足裏部の均一冷
却の面では、冷却処理位置に支持・固定される軌条が、
足裏部長手方向数ヶ所の両側端部だけで軌条足部支持・
拘束装置の支持部上に支持され、この部分を除く足裏部
全長に冷媒が直接接触できるような構造とし、しかも
却処理中、軌条またはレール足裏部冷却用の冷媒噴射ヘ
ッダーを軌条長手方向でオシレーションできるようにし
たため、レール足裏部冷却用の冷媒噴射ヘッダーの不連
続部に起因する軌条長手方向の冷却むらを適切に防止す
ることができる。また、本発明装置は搬送装置および冷
却装置を直列方向に延長させるだけで設備の拡張ができ
るため、軌条の必要熱処理本数に応じて容易に設備改造
を行うことができる。
As described above, according to the apparatus of the present invention,
Upright rails transported from the rolling line
In cooling in a state, it is called rolling, transportation and cooling of the rail
A series of processes is performed smoothly and smoothly while ensuring uniform cooling of each part of the rail.
Can be performed efficiently. In particular, uniform cooling of the rail soles
In terms of relocation, the rail supported and fixed at the cooling processing position,
Rail foot support only at several side edges in the longitudinal direction of the sole
Foot sole supported on the support of the restraint, excluding this part
The structure is such that the refrigerant can be in direct contact with the entire length, and during the cooling process, the refrigerant injection header for cooling the rail or the sole of the rail can be oscillated in the longitudinal direction of the rail. Cooling unevenness in the rail longitudinal direction due to the discontinuous portion of the cooling coolant injection header can be appropriately prevented. In addition, since the equipment of the present invention can be expanded only by extending the transfer device and the cooling device in series, the equipment can be easily remodeled according to the required number of heat treatments of the rail.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明装置の一実施例を示す正面図FIG. 1 is a front view showing an embodiment of the apparatus of the present invention.

【図2】本発明装置の一実施例を示す平面図FIG. 2 is a plan view showing an embodiment of the apparatus of the present invention.

【図3】図1および図2における転回・搬送装置の詳細
を示す側面図
FIG. 3 is a side view showing details of the turning / conveying device in FIGS. 1 and 2;

【図4】本発明装置の他の実施例を示す正面図FIG. 4 is a front view showing another embodiment of the apparatus of the present invention.

【図5】本発明装置の他の実施例を示す平面図FIG. 5 is a plan view showing another embodiment of the device of the present invention.

【図6】軌条足部支持・拘束装置の好ましい実施例であ
って、爪で軌条足部を拘束した状態を示す部分側面図
FIG. 6 is a partial side view showing a preferred embodiment of the rail foot support / restraint device, in which the rail foot is restrained by claws.

【図7】図6のVII−VII線に沿う矢視図FIG. 7 is an arrow view along the line VII-VII in FIG. 6;

【図8】本発明装置による軌条冷却処理の手順を段階的
に示す説明図
FIG. 8 is an explanatory diagram showing a step of a rail cooling process by the apparatus of the present invention in a stepwise manner.

【図9】本発明装置による軌条冷却処理の手順を段階的
に示す説明図
FIG. 9 is an explanatory diagram showing a step of a rail cooling process by the apparatus of the present invention.

【図10】本発明装置によるオシレ−ションの範囲を示
す説明図
FIG. 10 is an explanatory diagram showing a range of oscillation by the apparatus of the present invention.

【図11】軌条足部支持・拘束装置を部分的に示す側面
FIG. 11 is a side view partially showing a rail foot support / restraint device.
Figure

【符号の説明】1…搬送装置、2…冷却装置、3…転回
・搬送装置、4a,4b,4c…冷媒噴射ヘッダ−、5
…オシレ−ション機構、6…軌条足部支持・拘束装置、
7…保持体、15…爪、16…架台、17…昇降装置、
18…昇降枠、19…支持枠、20…シリンダ装置、2
1…走行ロ−ラ、26…架台、28…走行ロ−ラ、61
…支持部
[Description of Signs] 1 ... Conveying device, 2 ... Cooling device, 3 ... Rotating / conveying device, 4a, 4b, 4c ... Refrigerant injection headers, 5
... Oscillation mechanism, 6 ... Rail foot support / restraint device,
7: Holder, 15: Claw, 16: Stand, 17: Lifting device,
18 ... lifting frame, 19 ... support frame, 20 ... cylinder device, 2
DESCRIPTION OF SYMBOLS 1 ... Running roller, 26 ... Stand, 28 ... Running roller, 61
… Support

───────────────────────────────────────────────────── フロントページの続き (72)発明者 酒井 謙一 東京都千代田区丸の内一丁目1番2号 日本鋼管株式会社内 (56)参考文献 特開 昭64−75628(JP,A) 特開 平1−246323(JP,A) 特公 平2−13012(JP,B2) ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kenichi Sakai 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nippon Kokan Co., Ltd. (56) References JP-A-64-75628 (JP, A) JP-A-1 246 323 (JP, A) Japanese Patent Publication No. 2-13012 (JP, B2)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 圧延ラインから横立状態で搬送されてき
た軌条を正立状態で冷却するための軌条熱処理装置であ
って、 軌条伸延方向に軌条を搬送する搬送装置と、この搬送装
置に隣接して平行に設けられる冷却装置と、前記搬送装
置と冷却装置間の長手方向で適宜間隔をおいて複数設け
られ、搬送装置と冷却装置間で軌条を転回させながら搬
送する転回・搬送装置とからなり、 前記冷却装置が、上下昇降可能な軌条頭頂部冷却用およ
び軌条頭側部冷却用の各冷媒噴射ヘッダーと、装置の長
手方向で適宜間隔をおいて設けられる軌条足部支持・拘
束装置と、軌条支持位置の下方に配され、装置長手方向
における前記転回・搬送装置の配置部において不連続部
を有する軌条足裏部冷却用の冷媒噴射ヘッダーと、前記
軌条足部支持・拘束装置または軌条足裏部冷却用の冷媒
噴射ヘッダーを軌条長手方向にオシレーションさせるた
めのオシレーション機構とから構成されるとともに、 冷却装置を構成する前記各軌条足部支持・拘束装置が、
軌条足裏部の両側端部を支持する支持部と、該支持部と
の間で軌条足部の両側端部を挟持する一対の爪を有して
おり、 前記各転回・搬送装置が、軌条を保持すべき断面L字状
の受面を備えた保持体を有し、該保持体が冷却装置長手
方向と直交する方向に回動可能であるとともに、支持機
構を介して昇降可能で且つ前記搬送装置−冷却装置間で
移動可能であることを特徴とする 軌条熱処理装置。
(1)Conveyed from the rolling line in a horizontal position
This is a rail heat treatment device for cooling the rails upright.
What  A transport device for transporting the rail in the rail extension direction, and the transport device
A cooling device provided in parallel adjacent to the device,The transfer device
Multiple units are provided at appropriate intervals in the longitudinal direction between
AndRolling the rail between the transfer device and the cooling device
The cooling device is used for cooling the top of the rail that can be moved up and down.
Each cooling jet header for cooling the track head side and the length of the device
Rail foot support and restraint provided at appropriate intervals in the hand direction
Bundling device and arranged below the rail support position, Device longitudinal direction
Discontinuous part in the arrangement part of the turning / transporting device in
HavingRefrigerant injection header for rail foot sole cooling, and
Rail foot support / restraint device or refrigerant for rail foot sole cooling
To oscillate the injection header in the longitudinal direction of the rail
With an oscillation mechanismAs well as Each of the rail foot support and restraint devices constituting the cooling device,
A support portion for supporting both ends of the rail foot sole,
With a pair of claws to pinch both ends of the rail foot between
Yes, Each of the turning / transporting devices has an L-shaped cross section to hold a rail.
Holding body provided with a receiving surface of
It can rotate in the direction perpendicular to the direction
Can be moved up and down through the structure and between the transfer device and the cooling device.
Characterized by being movable Rail heat treatment equipment.
JP3210366A 1991-07-29 1991-07-29 Rail heat treatment equipment Expired - Fee Related JP2653279B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3210366A JP2653279B2 (en) 1991-07-29 1991-07-29 Rail heat treatment equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3210366A JP2653279B2 (en) 1991-07-29 1991-07-29 Rail heat treatment equipment

Publications (2)

Publication Number Publication Date
JPH0533057A JPH0533057A (en) 1993-02-09
JP2653279B2 true JP2653279B2 (en) 1997-09-17

Family

ID=16588177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3210366A Expired - Fee Related JP2653279B2 (en) 1991-07-29 1991-07-29 Rail heat treatment equipment

Country Status (1)

Country Link
JP (1) JP2653279B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU783734B2 (en) * 1999-09-13 2005-12-01 Dow Agrosciences Llc Pesticidal macrolides
CN100482812C (en) * 2006-09-12 2009-04-29 攀枝花钢铁(集团)公司 Rail heat processing method and rail heat processing unit
WO2013118236A1 (en) * 2012-02-06 2013-08-15 Jfeスチール株式会社 Rail heat treatment device and rail heat treatment method
EP3597780A4 (en) 2017-03-15 2020-01-22 JFE Steel Corporation Cooling device and production method for rail

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2635334B2 (en) * 1987-09-18 1997-07-30 新日本製鐵株式会社 Refrigeration system for stationary section steel with flange
JPH01246323A (en) * 1988-03-28 1989-10-02 Nippon Steel Corp Device for holding rail in heat treatment apparatus for rail
JPH0213012A (en) * 1988-06-30 1990-01-17 Nec Corp Voltage controlled oscillator

Also Published As

Publication number Publication date
JPH0533057A (en) 1993-02-09

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