JPS6327088B2 - - Google Patents

Info

Publication number
JPS6327088B2
JPS6327088B2 JP2602684A JP2602684A JPS6327088B2 JP S6327088 B2 JPS6327088 B2 JP S6327088B2 JP 2602684 A JP2602684 A JP 2602684A JP 2602684 A JP2602684 A JP 2602684A JP S6327088 B2 JPS6327088 B2 JP S6327088B2
Authority
JP
Japan
Prior art keywords
rolled material
cooling
table roll
water
rolled
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
Application number
JP2602684A
Other languages
Japanese (ja)
Other versions
JPS60170521A (en
Inventor
Takashi Ueno
Shizuka Nakagawa
Shunji Kunyasu
Keizo Tanaka
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.)
Sumitomo Light Metal Industries Ltd
Original Assignee
Sumitomo Light Metal Industries 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 Sumitomo Light Metal Industries Ltd filed Critical Sumitomo Light Metal Industries Ltd
Priority to JP2602684A priority Critical patent/JPS60170521A/en
Publication of JPS60170521A publication Critical patent/JPS60170521A/en
Publication of JPS6327088B2 publication Critical patent/JPS6327088B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203Cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B3/00Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
    • B21B2003/001Aluminium or its alloys

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は熱間圧延材の冷却方法および冷却装置
に関するものであつて詳細には良好な表面程度の
要求せられるアルミニウム圧延材(アルミニウム
合金を含む。以下同じ)に適用して好適なもので
ある。アルミニウム板材の品質向上をはかるため
熱間圧延過程において圧延材を強制冷却すること
はよく知られるところであり、通例圧延機出側に
おいてテーブルロール上を走行するアルミニウム
圧延材を水冷する方式が採られ圧延材は圧延機に
延設されたテーブル上に間隔をおいて列設される
第1図に示すような鼓形のテーブルロール1上を
走行する過程で圧延材の上方部と下方部に設置さ
れた多数のヘツダーから圧延材の上下面に放水さ
れる冷却水により冷却されている。ところでアル
ミニウムは良好な表面程度を要求されるためテー
ブルロールも上記する如く鼓形とし、圧延材の側
縁部がロールで支持されるようにしているが、圧
延材の上下面を冷却すると比較的肉薄の圧延材の
場合には冷却時の熱応力と自重により圧延材が下
そりの状態になり、テーブルロールと圧延材との
接触位置が圧延材の端部から段々と圧延材の幅方
向内側へと移動し、テーブルロールと圧延材との
速度差により圧延材の製品部にキズを生じさせる
不都合があり、かかる不都合は幅広材の場合や、
冷却能力を高めることによつて顕著となるので生
産性の向上を妨げる問題ともなつている。 本発明の目的はかかる不都合を解消することで
あり、その要旨とするところは圧延材上面部を冷
却するとともに該冷却帯域におけるテーブルロー
ルと圧延材の接触を軽減させることを特徴とする
ものである。以下に本発明を図面を参照して説明
すると本発明において使用される冷却装置として
は特に限定されないが、冷却能良好なるものが好
ましく、たとえば第2図に例示する冷却装置2の
ように中空ヘツダの隅角部にスリツト3を設けて
該スリツトから圧力水を噴射させるようにしたも
のが好適である。なお、1はテーブルロールであ
る。 このような冷却装置2を圧延材の上方部に設
け、圧延材の上面部を冷却した場合の圧延材の変
形過程を第3図にしめした。 イは冷却前でフラツトな板材であるが、ロは圧
延材の上方部より冷却したときの図で、板材は下
そりとなり、ハは冷却後圧延材は上そりとなる。
しかしてかかる変形過程によれば冷却後において
はテーブルロールと圧延材との接触を板の端部の
みとすることができ、板幅方向の内側即ち板材の
中央部での接触は避けられるので冷却中圧延材が
一時的に下そりになる期間中圧延材とテーブルロ
ールの接触を回避させることにより圧延材へのキ
ズの発生は防止される。圧延材とテーブルロール
の接触を回避させるには水冷部位のテーブルロー
ルを上下動自在とすることも考えられるが、後記
する実施例からも確められているように水冷部位
のテーブルロールを小径として圧延材との接触を
軽減することで良好な結果を得ることができる。
なおテーブルロールを小径にしてもロール形状は
鼓形で通常使用しているテーブルロールは端部の
直径は約290mm、中央部の直径は約230mmのもので
あるが、小径のものは端部の直径が約260mm位、
中央部の直径が約200mm位のものである。 第4図は本発明の好ましい実施態様を示すもの
で、5は圧延機であり圧延された圧延材4はテー
ブルロール1上を搬送され、冷却装置2により水
冷される。この水冷される冷却区間のテーブルロ
ール1は前記の如く小径にされる。また、冷却装
置2は圧延材4の搬送方向と順方向であると冷却
水が圧延材面に滞留する不都合があるので、一対
の水冷装置2が対向状に設けられる。 このような装置による種々のテストをした結果
を次の表―1に示す。
The present invention relates to a cooling method and a cooling device for hot-rolled materials, and more particularly, it is suitable for application to aluminum rolled materials (including aluminum alloys, hereinafter the same) that require a good surface quality. . It is well known that forced cooling of rolled aluminum sheets during the hot rolling process is used to improve the quality of aluminum sheets, and a method is generally adopted in which the rolled aluminum sheets are water-cooled as they run on table rolls on the exit side of the rolling mill. The rolling material is placed on the upper and lower parts of the rolling material as it travels on the drum-shaped table rolls 1 as shown in Figure 1, which are arranged at intervals on a table extended in the rolling mill. The rolled material is cooled by cooling water that is sprayed onto the upper and lower surfaces of the rolled material from a large number of headers. By the way, since aluminum requires a good surface level, the table roll is also shaped like a drum as mentioned above so that the side edges of the rolled material are supported by the rolls, but when the top and bottom surfaces of the rolled material are cooled, In the case of a thin rolled material, the rolled material will warp due to thermal stress and its own weight during cooling, and the contact position between the table roll and the rolled material will gradually move inward in the width direction of the rolled material from the edge of the rolled material. There is an inconvenience in that the speed difference between the table roll and the rolled material causes scratches on the product part of the rolled material, and this inconvenience occurs when the material is wide or
This becomes more noticeable as the cooling capacity is increased, and has become a problem that hinders productivity improvement. The purpose of the present invention is to eliminate such inconveniences, and its gist is to cool the upper surface of the rolled material and to reduce contact between the table roll and the rolled material in the cooling zone. . The present invention will be explained below with reference to the drawings. Although the cooling device used in the present invention is not particularly limited, it is preferable to have a good cooling ability. For example, a hollow header like the cooling device 2 illustrated in FIG. It is preferable that a slit 3 is provided at the corner of the slit so that pressurized water is injected from the slit. Note that 1 is a table roll. FIG. 3 shows the deformation process of the rolled material when such a cooling device 2 is provided above the rolled material to cool the upper surface of the rolled material. A is a flat plate before cooling, B is a diagram when the rolled material is cooled from the upper part, and the plate exhibits downward warpage, and C shows the rolled material exhibits upward warpage after cooling.
However, according to this deformation process, after cooling, the table roll and the rolled material can come into contact only at the edges of the plate, and contact on the inside in the width direction of the plate, that is, at the center of the plate, can be avoided. By avoiding contact between the rolling material and the table roll during the period when the medium-rolled material temporarily warps, the occurrence of scratches on the rolling material is prevented. In order to avoid contact between the rolled material and the table roll, it may be possible to make the table roll in the water-cooled part movable up and down, but as confirmed by the examples described later, it is possible to make the table roll in the water-cooled part small in diameter. Good results can be obtained by reducing contact with the rolled material.
Even if the diameter of the table roll is made small, the roll shape is drum-shaped, and the diameter of the table roll that is normally used is about 290 mm at the end and about 230 mm at the center. The diameter is about 260mm,
The diameter of the central part is approximately 200mm. FIG. 4 shows a preferred embodiment of the present invention, in which reference numeral 5 denotes a rolling mill, and a rolled material 4 is conveyed on a table roll 1 and cooled with water by a cooling device 2. The table roll 1 in this water-cooled cooling section is made small in diameter as described above. Further, if the cooling device 2 is located in the forward direction of the conveyance direction of the rolled material 4, there is a problem that the cooling water will stay on the surface of the rolled material, so a pair of water cooling devices 2 are provided facing each other. The results of various tests using this type of equipment are shown in Table 1 below.

【表】【table】

Claims (1)

【特許請求の範囲】[Claims] 1 圧延機に連設されたテーブルロール上を走行
する圧延材の上面部を定位置にて水冷するととも
に、水冷部位近傍のテーブルロールを小径に形成
して圧延材とテーブルロールとを離間させること
を特徴とする熱間圧延材の冷却方法。
1 Water-cooling the upper surface of the rolled material running on a table roll connected to a rolling mill at a fixed position, and forming the table roll near the water-cooling part to have a small diameter to separate the rolled material from the table roll. A method for cooling hot rolled material characterized by:
JP2602684A 1984-02-16 1984-02-16 Method and device for cooling hot rolled material Granted JPS60170521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2602684A JPS60170521A (en) 1984-02-16 1984-02-16 Method and device for cooling hot rolled material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2602684A JPS60170521A (en) 1984-02-16 1984-02-16 Method and device for cooling hot rolled material

Publications (2)

Publication Number Publication Date
JPS60170521A JPS60170521A (en) 1985-09-04
JPS6327088B2 true JPS6327088B2 (en) 1988-06-01

Family

ID=12182187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2602684A Granted JPS60170521A (en) 1984-02-16 1984-02-16 Method and device for cooling hot rolled material

Country Status (1)

Country Link
JP (1) JPS60170521A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013221710A1 (en) * 2013-10-25 2015-04-30 Sms Siemag Aktiengesellschaft Aluminum hot strip rolling mill and method for hot rolling an aluminum hot strip

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5059251A (en) * 1973-09-26 1975-05-22
JPS5641017A (en) * 1979-09-12 1981-04-17 Toshiba Corp Measuring method for time of useless water injection

Also Published As

Publication number Publication date
JPS60170521A (en) 1985-09-04

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