JPS6110838Y2 - - Google Patents

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Publication number
JPS6110838Y2
JPS6110838Y2 JP3460880U JP3460880U JPS6110838Y2 JP S6110838 Y2 JPS6110838 Y2 JP S6110838Y2 JP 3460880 U JP3460880 U JP 3460880U JP 3460880 U JP3460880 U JP 3460880U JP S6110838 Y2 JPS6110838 Y2 JP S6110838Y2
Authority
JP
Japan
Prior art keywords
slab
heat insulating
ring
roller
present
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
JP3460880U
Other languages
Japanese (ja)
Other versions
JPS56137853U (en
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 filed Critical
Priority to JP3460880U priority Critical patent/JPS6110838Y2/ja
Publication of JPS56137853U publication Critical patent/JPS56137853U/ja
Application granted granted Critical
Publication of JPS6110838Y2 publication Critical patent/JPS6110838Y2/ja
Expired legal-status Critical Current

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  • Rolls And Other Rotary Bodies (AREA)
  • Continuous Casting (AREA)

Description

【考案の詳細な説明】[Detailed explanation of the idea]

本考案は連続鋳造設備の鋳片搬送ローラに関
し、その目的は搬送中における鋳片の温度低下を
防止すると共に、その耐用寿命延長を可能ならし
める搬送ローラを提供するものである。 連続鋳造設備(以下連鋳設備と云う)で製造さ
れた鋳片を冷却することなくそのまま、あるいは
僅かな加熱を与え圧延工程へ送給する(以下直送
圧延と云う)ための技術開発が昨今の省エネルギ
ー技術の開発と相俟つて積極的に行なわれてい
る。前記直送圧延を可能ならしめるためには連鋳
設備における鋳片の温度低下を極力減少し連鋳設
備の終端部における鋳片温度をできるだけ高い温
度に維持することが極めて重要である。 而して、該鋳片の温度低下を防止するために例
えば、鋳片を囲繞する保温装置や鋳片搬送途中に
おける加熱装置等について従来より多くの提案が
なされている。 本考案は前記温度低下のさらに効果的な防止を
可能ならしめるために種々実験研究を繰返した結
果案出されたものである。 さて、本考案者等は連鋳設備における鋳片の温
度降下状況について種々調査研究を行なつた結
果、搬送テーブルを搬送される間の鋳片下面およ
び側面の温度降下の著しいことが確認された。即
ち、鋳片は引出しガイドロール群によつて鋳型か
ら連続的に引出され搬送テーブルに送給される。
搬送テーブルにおいて鋳片は搬送ローラで支承さ
れ搬送されるが、搬送ローラは従来耐熱性、強度
等の問題より金属性のものが一般的であつたこと
から熱伝導率が高く低温の前記搬送ローラと接触
および近接する鋳片下面および側面は接触熱伝導
および輻射熱ロスが大きくこのため下面および側
面の温度が降下し、該温度降下状況が前記直送圧
延に重要な影響を与えると云う知見を得た。 本考案は前記知見に基づき、さらに研究を進め
た結果、案出されたものである。 以下実施例を示す図に基づき、本考案を詳細に
説明する。 第1図は一般的な連鋳設備の構造図であり、1
は鋳片、2は鋳型、3は引出しガイドロール群、
4は搬送テーブルである。搬送テーブル4には適
宜な間隔で搬送ローラ5が配設されている。 而して、鋳片1は鋳型2より連続的に引出され
搬送テーブル4に設置された切断装置6で設定長
さに切断され、後続する圧延設備(図示せず)へ
送給される。 第2図は本考案に基づく前記搬送ローラ5の一
実施例を示す断面図である。本考案の搬送ローラ
5はローラ本体50の外周面に支承リング7と断
熱リング8を交互に嵌合して構成されている。支
承リング7は鋳片1を支承するもので、鋳片1の
巾、厚み、単位長さ当りの重量および搬送ロール
5の配設ピツチ等に応じ、その面圧力が許容値内
になるよう1個当りの巾wおよび間隔が設定さ
れている。支承リング7はロール本体50に焼ば
め、あるいは溶接して固定される。 本考案において支承リング7を外嵌せしめると
は係る意味で用いるものである。支承リング7の
相隣わる間隙yには前述の如く断熱リング8が嵌
装されている。該断熱リング8は予め断熱材をリ
ング状に成形して構成することは勿論例えば第4
図に示すように断熱材81aを予め半割のリング
8aに成形すること、第5図および第6図に示す
ように綿状あるいは粒状の断熱材81bを耐熱性
金網82で囲繞するか、ローラ本体50に固着さ
れたスタツド83を介してローラ本体50の外周
面を被覆せしめてリング8b,8cを構成するこ
と、第7図に示すようにシート状の断熱材81d
をローラ本体50の外周面に多重層に巻付けてリ
ング8dを構成することのいずれでも良く、適宜
選択し採用すれば良い。 本考案において断熱リング8をローラ本体50
に外嵌せしめるとは、前述のようにリング状に成
形された断熱リング8を支承リング7と交互にロ
ーラ本体50に嵌入せしめることから、ローラ本
体50に半割のリング8aあるいはシート状の断
熱材81dを接着剤によつて固着したり粉・粒状
の断熱材81bを金網82、スタツド83等を介
して固着し断熱リング8(前記種々の断熱リング
を総称して云うときは以下断熱リング8と云う)
を構成することまでを含めて云うものである。断
熱材81(各種の断熱材81a,81b,81
c,81dを総称して云うときは以下断熱材81
と云う)としては、例えばセラミツクフアイバ
ー、あるいはアスベスト、あるいは不定形耐火物
等を用いることが可能であるが、本考案者等の経
験ではセラミツクフアイバーを無機質系バインダ
ーと混合し、リング状あるいは半割リング状に成
形したものが断熱性および耐用性に秀れ効果的で
あつた。又、搬送ローラ5にはそのロールネツク
に散水を行う場合があり、該散水による飛沫がロ
ーラ本体50にも降りかかる事態の生じることが
ある。而して該飛沫によつて断熱リング8に亀裂
等の生じることを防止するために、例えば前記断
熱リング8の表面にアスベスト粉末を無機質系バ
インダーと混錬して塗布あるいは吹付等によつて
断熱被膜を形成せしめることが効果的である。 以上のように本考案の搬送ローラ5はローラ本
体50の全表面積中の任意量が断熱材81で被覆
されていることから高温の鋳片1が搬送ローラ5
に接触、あるいは近接することによつて吸熱され
る現象を著しく減少でき、鋳片1の温度降下を防
止できる上に、逆に高温鋳片1からローラ本体5
0に加わる熱影響も軽減でき搬送ローラ5の寿命
延長を計ることができる。さらに高温の鋳片1に
接触する支承リング7はローラ本体50に外嵌さ
れていることから苛酷な使用条件下で支承リング
7に亀裂が生じても、該亀裂がローラ本体50ま
で達することがなく、従つて支承リング7のみを
取替えることによりローラ本体50は繰返し使用
することが可能である。尚、支承リング7の表面
に第2図に示すように例えば耐熱、耐摩耗性に秀
れたステンレス鋼の如き財料を肉盛7a、あるい
は溶射すればその許容面圧を高くでき、断熱リン
グ8のローラ本体50の全表面積に対する占積表
面積を大きくできるうえに支承リング自体の熱伝
導率を母材のまゝに比べて約1/2(肉盛の場合)、
約1/4(溶射の場合)と大巾に低減できこの結果
前記鋳片1の保温効果、即ち温度降下防止の効果
をさらに大きなものとすることができる。 表は第3図の如き従来構造の搬送ローラ5′
(第3図a)と本考案の搬送ローラ5(第3図
b)においてその保温効果を比較した実施結果を
示すもので、保温効果を熱伝達係数(kca/m2
h℃)として表わしたものである。本実施例は鋳
片1の上方に保熱カバー10が設置され、鋳片1
は巾750mm×厚250mm、その搬送速度0.5〜1m/
secで搬送ローラ5における断熱リング8の前記
占積表面積は70%であつた。
The present invention relates to a slab conveying roller for continuous casting equipment, and its purpose is to provide a conveying roller that can prevent the temperature of the slab from decreasing during conveyance and extend its useful life. Recent technological developments have enabled the slabs produced in continuous casting equipment (hereinafter referred to as continuous casting equipment) to be sent to the rolling process without being cooled or after being slightly heated (hereinafter referred to as direct rolling). This is being actively carried out in conjunction with the development of energy saving technology. In order to enable the above-mentioned direct rolling, it is extremely important to reduce the temperature drop of the slab in the continuous casting equipment as much as possible and to maintain the temperature of the slab at the end of the continuous casting equipment as high as possible. In order to prevent the temperature of the slab from decreasing, many proposals have been made for, for example, a heat retaining device surrounding the slab, a heating device during conveyance of the slab, and the like. The present invention was devised as a result of repeated various experimental studies in order to more effectively prevent the temperature drop. The inventors of the present invention have conducted various studies on the temperature drop of slabs in continuous casting equipment, and as a result, it has been confirmed that there is a significant temperature drop on the bottom and side surfaces of slabs while they are transported on a conveying table. . That is, the slab is continuously pulled out from the mold by a group of pull-out guide rolls and fed to a conveyance table.
On the conveyance table, the slab is supported and conveyed by conveyance rollers. Conventionally, conveyance rollers have generally been made of metal due to heat resistance, strength, etc. It was found that contact heat conduction and radiant heat loss are large on the bottom and side surfaces of the slab that are in contact with and in close proximity to the slab, and as a result, the temperature of the bottom and side surfaces drops, and this temperature drop situation has an important effect on the above-mentioned direct rolling. . The present invention was devised as a result of further research based on the above findings. The present invention will be described in detail below based on figures showing embodiments. Figure 1 is a structural diagram of general continuous casting equipment.
is a slab, 2 is a mold, 3 is a group of drawer guide rolls,
4 is a conveyance table. Conveyance rollers 5 are arranged on the conveyance table 4 at appropriate intervals. The slab 1 is continuously pulled out from the mold 2, cut into a set length by a cutting device 6 installed on a conveyance table 4, and then sent to a subsequent rolling facility (not shown). FIG. 2 is a sectional view showing an embodiment of the conveyance roller 5 based on the present invention. The conveying roller 5 of the present invention is constructed by alternately fitting support rings 7 and heat insulating rings 8 onto the outer peripheral surface of a roller body 50. The support ring 7 supports the slab 1, and is designed to keep its surface pressure within the allowable value depending on the width, thickness, weight per unit length of the slab 1, pitch of the conveyor rolls 5, etc. The width w and interval for each piece are set. The support ring 7 is fixed to the roll body 50 by shrink fitting or welding. In the present invention, the term "fitting the support ring 7" is used in this sense. As described above, the heat insulating ring 8 is fitted in the gap y between adjacent bearing rings 7. The heat insulating ring 8 may be formed by forming a heat insulating material into a ring shape in advance, or may be formed by, for example, a fourth heat insulating ring.
As shown in the figure, the heat insulating material 81a is formed in advance into a half ring 8a, or as shown in FIGS. The rings 8b and 8c are constructed by covering the outer peripheral surface of the roller body 50 via studs 83 fixed to the body 50, and a sheet-like heat insulating material 81d is used as shown in FIG.
The ring 8d may be constructed by winding multiple layers around the outer circumferential surface of the roller main body 50, and the ring 8d may be appropriately selected and adopted. In the present invention, the heat insulating ring 8 is connected to the roller body 50.
"Fitting" means fitting the ring-shaped heat insulating ring 8 and the support ring 7 alternately into the roller body 50 as described above. A heat insulating ring 8 (hereinafter referred to as the heat insulating ring 8 when the various heat insulating rings mentioned above are collectively referred to as the heat insulating ring 8) is formed by fixing the heat insulating material 81d with adhesive or by fixing the powder or granular heat insulating material 81b through a wire mesh 82, studs 83, etc. )
This includes everything up to and including configuring. Thermal insulation material 81 (various types of insulation materials 81a, 81b, 81
c, 81d are collectively referred to as insulation material 81.
For example, it is possible to use ceramic fiber, asbestos, or monolithic refractory material, but in the experience of the present inventors, it is possible to mix ceramic fiber with an inorganic binder to form a ring-shaped or halved material. The ring-shaped molded material had excellent heat insulation properties and durability, and was effective. Further, there are cases where the roll neck of the transport roller 5 is sprayed with water, and a situation may occur in which droplets from the water spray fall on the roller body 50 as well. In order to prevent cracks from occurring in the heat insulating ring 8 due to the droplets, for example, asbestos powder mixed with an inorganic binder may be applied or sprayed onto the surface of the heat insulating ring 8 to insulate the heat insulating ring 8. It is effective to form a film. As described above, in the conveying roller 5 of the present invention, since an arbitrary amount of the total surface area of the roller body 50 is covered with the heat insulating material 81, the hot slab 1 is transferred to the conveying roller 5.
The phenomenon of heat absorption due to contact with or proximity to the roller body 5 can be significantly reduced, and a drop in temperature of the slab 1 can be prevented.
It is also possible to reduce the thermal influence on the conveyor roller 5 and extend the life of the conveyor roller 5. Furthermore, since the bearing ring 7 that comes into contact with the hot slab 1 is fitted onto the roller body 50, even if a crack occurs in the bearing ring 7 under severe usage conditions, the crack will not reach the roller body 50. Therefore, by replacing only the support ring 7, the roller body 50 can be used repeatedly. As shown in FIG. 2, the allowable surface pressure of the support ring 7 can be increased by overlaying or thermal spraying a material such as stainless steel with excellent heat resistance and wear resistance, as shown in FIG. In addition to increasing the surface area relative to the total surface area of the roller body 50 of No. 8, the thermal conductivity of the bearing ring itself is approximately 1/2 that of the base material (in case of overlay).
This can be greatly reduced to about 1/4 (in the case of thermal spraying), and as a result, the heat retention effect of the slab 1, that is, the effect of preventing temperature drop can be further increased. The table shows a conventional conveyor roller 5' as shown in Figure 3.
(Figure 3a) and the conveyance roller 5 of the present invention (Figure 3b) .
h°C). In this embodiment, a heat insulating cover 10 is installed above the slab 1, and
Width 750mm x thickness 250mm, conveyance speed 0.5-1m/
sec, the occupied surface area of the heat insulating ring 8 on the conveying roller 5 was 70%.

【表】 表から明らかなように本考案によつて特に鋳片
1の側面および下面の温度低下を大巾に低減させ
ることの可能なことが確認された。 尚、本考案者等の経験では断熱リング8の前記
占積表面積を60〜80%の範囲に設定することが本
考案の機能をより効果的に発揮せしめるうえから
好ましい。 以上、詳述したように本考案は簡単な構成では
あるが、その実用的効果は非常に大である。
[Table] As is clear from the table, it has been confirmed that the present invention can significantly reduce the temperature drop, especially on the side and bottom surfaces of the slab 1. According to the experience of the inventors of the present invention, it is preferable to set the surface area of the heat insulating ring 8 in a range of 60 to 80% in order to more effectively exhibit the functions of the present invention. As described above, although the present invention has a simple configuration, its practical effects are very large.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は一般的な連続鋳造設備の構造図、第2
図は本考案に基づく搬送ローラの一実施例を示す
断面図、第3図a、bは本考案と従来構造の搬送
ローラの比較例を示す断面構造図で、aは従来の
もの、bは本考案のもので、ある。第4図〜第7
図は本考案に基づく断熱リングの異なつた実施例
を示す断面図である。 1は鋳片、2は鋳型、3は引出しガイドロール
群、4は搬送テーブル、5,5′は搬送ローラ、
50はローラ本体、6は切断装置、7は支承リン
グ、8、8a,8b,8c,8dは断熱リング、
10は保熱カバー。
Figure 1 is a structural diagram of general continuous casting equipment, Figure 2
The figure is a cross-sectional view showing an embodiment of the conveyance roller based on the present invention, and FIGS. It is based on this invention. Figures 4 to 7
The figures are sectional views showing different embodiments of the heat insulating ring according to the present invention. 1 is a slab, 2 is a mold, 3 is a group of drawer guide rolls, 4 is a conveyance table, 5, 5' are conveyance rollers,
50 is a roller body, 6 is a cutting device, 7 is a support ring, 8, 8a, 8b, 8c, 8d is a heat insulating ring,
10 is a heat insulation cover.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 中実ローラ本体に複数個の鋳片支承リングと断
熱リングを交互に外嵌せしめてなる連続鋳造設備
の鋳片搬送ローラ。
A slab conveying roller for continuous casting equipment, which consists of a solid roller body with a plurality of slab bearing rings and heat insulation rings alternately fitted on the outside.
JP3460880U 1980-03-18 1980-03-18 Expired JPS6110838Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3460880U JPS6110838Y2 (en) 1980-03-18 1980-03-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3460880U JPS6110838Y2 (en) 1980-03-18 1980-03-18

Publications (2)

Publication Number Publication Date
JPS56137853U JPS56137853U (en) 1981-10-19
JPS6110838Y2 true JPS6110838Y2 (en) 1986-04-07

Family

ID=29630247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3460880U Expired JPS6110838Y2 (en) 1980-03-18 1980-03-18

Country Status (1)

Country Link
JP (1) JPS6110838Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58224057A (en) * 1982-06-21 1983-12-26 Nippon Kokan Kk <Nkk> Roll for transfer of hot ingot or the like

Also Published As

Publication number Publication date
JPS56137853U (en) 1981-10-19

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