JPH04178246A - Builtup casting mold - Google Patents
Builtup casting moldInfo
- Publication number
- JPH04178246A JPH04178246A JP30661690A JP30661690A JPH04178246A JP H04178246 A JPH04178246 A JP H04178246A JP 30661690 A JP30661690 A JP 30661690A JP 30661690 A JP30661690 A JP 30661690A JP H04178246 A JPH04178246 A JP H04178246A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- cast wall
- members
- wall member
- casting mold
- 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.)
- Pending
Links
- 238000005266 casting Methods 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 4
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 239000012768 molten material Substances 0.000 abstract 1
- 238000009749 continuous casting Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000005499 meniscus Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野コ
この発明は、ス、ラブ、ブルーム、ビレット等の鋳片を
連続鋳造するための組立鋳型に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to an assembly mold for continuous casting of slabs such as slabs, rubs, blooms, and billets.
[従来の技術]
溶鋼の連続鋳造において、鋳型は溶鋼を凝固殻として一
次凝固させる役割を有しており、高い冷却能力を実現す
る為に、水冷銅板を用い、必要により硬質金属等をメツ
キしている。その空孔形状は、所要の鋳片形状を得る決
定的な要素となっているので、種々の断面寸法の鋳片を
製造する連続鋳造機では断面寸法の変更毎に空孔形状を
変えた鋳型に交換していた。しかし、スラブ製造用の連
続鋳造機では、単に、スラブ幅の変更だけで鋳片の断面
寸法の変更が可能なので、長辺部材(固定部材)間で短
辺部材(可動部材)か移動可能なように設けて、鋳造領
域の幅を変更(輻替え)する、組立鋳型とする方法か行
われている。[Conventional technology] In continuous casting of molten steel, the mold has the role of primarily solidifying the molten steel as a solidified shell.In order to achieve high cooling capacity, a water-cooled copper plate is used, and if necessary, it is plated with hard metal etc. ing. The shape of the pores is a decisive factor in obtaining the desired slab shape, so continuous casting machines that produce slabs with various cross-sectional dimensions use molds with different pore shapes each time the cross-sectional dimension changes. was being exchanged. However, in continuous casting machines for producing slabs, the cross-sectional dimensions of the slab can be changed simply by changing the slab width, so the short side members (movable members) can be moved between the long side members (fixed members). A method of creating an assembled mold is used, in which the width of the casting area is changed (changed).
この輻替え装置付の組立鋳型においては、可動部材の両
側面を固定部材の対向壁面に当接させる構造となってお
り、当接部に僅かな隙間が不可避的に存在する。そして
、当接部の隙間が大きすぎると、溶鋼か隙間に侵入しく
溶鋼の差込み)、初期凝固殻が破断され、ブレークアウ
トやニ重肌等のトラブルが生じる。このようなトラブル
か発生しないよう、組立鋳型においては、対向する固定
部材をクランプで締付けて固定部材を可動部材の側面に
密着させ、当接部に生しる隙間を最小限におさえるよう
にしている。In this assembly mold with a convergence changer, both side surfaces of the movable member are brought into contact with the opposing wall surfaces of the fixed member, and a slight gap inevitably exists at the contact portion. If the gap between the abutting portions is too large, molten steel will enter the gap (insertion of the molten steel) and the initially solidified shell will be ruptured, causing problems such as breakouts and double skin. To avoid such troubles, when assembling molds, clamp the opposing fixed members so that they come into close contact with the sides of the movable member, and minimize the gap that occurs at the contact area. There is.
また、輻替えの為に長辺部材(固定部材)の表面上を短
辺部材(可動部材)が当接移動する時に、当接面が銅の
裸金属面となるとカジリか生じ易いので、短辺部材の当
接面はNi等の硬質金属を厚< (0,5mm程度)メ
ツキしている。Also, when the short side member (movable member) touches and moves on the surface of the long side member (fixed member) for convergence change, if the contact surface is a bare copper metal surface, galling is likely to occur. The contact surfaces of the side members are plated with a hard metal such as Ni to a thickness of about 0.5 mm.
[発明か解決しようとする課題]
しかしながら、従来の組立鋳型に溶鋼を注入すると、第
7図に示すように、短辺部材21は熱膨張により長手方
向に延びようとする。しかしなから、短辺部材21の側
面はクランプて長辺部材22の壁面に押付けられて拘束
されているので、実際には延びることか出来ないため、
残留応力か短辺部材21に発生する。[Problems to be Solved by the Invention] However, when molten steel is poured into a conventional assembly mold, as shown in FIG. 7, the short side member 21 tends to extend in the longitudinal direction due to thermal expansion. However, since the side surface of the short side member 21 is clamped and pressed against the wall surface of the long side member 22, it cannot actually extend.
Residual stress occurs in the short side member 21.
上記した短辺部材21に発生した残留応力は、鋳型の繰
返し使用によりだんだん大きくなり、ついには鋳型材料
の弾性限界を超えるため、鋳型に塑性変形か発生し、鋳
造後に鋳型か冷却収縮すると、第8図に示すように、短
辺部材21と長辺部材22との当接部に局所的な間隙2
3か発生する。この隙間23か冷間て許容値の3mmを
超えるようになると、クランプで締付けているにもかか
わらず、溶鋼の差込みか生じやすくなるので、鋳型の使
用を中止せざるをえなくなり、鋳型の寿命か著しく短く
なるという問題点かあった。特に、鋳造速度か速い高速
鋳造においては鋳型寿命が極端に短くなり、高価な鋳型
を頻繁に交換するため、コスト高となっていた。The residual stress generated in the short side member 21 described above gradually increases with repeated use of the mold, and eventually exceeds the elastic limit of the mold material, causing plastic deformation in the mold and shrinkage on cooling after casting. As shown in FIG.
3 occurs. If this gap 23 exceeds the cold allowable value of 3 mm, molten steel is likely to get inserted even though it is tightened with a clamp, and the mold will have to be discontinued, which will extend the life of the mold. However, there was a problem in that it became noticeably shorter. In particular, in high-speed casting where the casting speed is high, the life of the mold becomes extremely short, and the expensive mold must be replaced frequently, resulting in high costs.
上記のような問題を解決するための連続鋳造用組立鋳型
としては、特願平1−034422号に開示されたもの
かある。この組立鋳型は、第9図に示すように短辺部材
21の両側面で、かつ湯面より上方に位置するところに
切欠き24が形成されているものである。このように切
欠き24を形成することにより、湯面上方領域において
短辺部材21が長辺部材22に対して非接触となり、湯
面直下領域における局部残留応力が大幅に緩和される。An assembly mold for continuous casting to solve the above problems is disclosed in Japanese Patent Application No. 1-034422. As shown in FIG. 9, this assembled mold has cutouts 24 formed on both sides of the short side member 21 and located above the molten metal level. By forming the notches 24 in this manner, the short side member 21 does not come into contact with the long side member 22 in the area above the hot water level, and local residual stress in the area directly below the hot water level is significantly alleviated.
このため、短辺部材21に塑性歪みが実質的に生じなく
なり、短辺部材21と長辺部材22との当接部の間隙が
実質的に拡大せず、溶鋼の差込みを有効に防止しつつ鋳
型を連続使用することが可能になるというものである。Therefore, plastic strain does not substantially occur in the short side member 21, the gap between the abutting portions of the short side member 21 and the long side member 22 does not substantially expand, and insertion of molten steel is effectively prevented. This makes it possible to use the mold continuously.
しかしながら、上述した短辺部材21の両側面で、かつ
湯面より上方に位置するところに切欠き24を入れただ
けの組立鋳型では、場面近傍の間隙の拡大を阻止するこ
とはできるか、鋳型の下方部分については、当接する長
片部材の面粗度が早期に粗になるため、短片部材の当接
面のカジリか進んで隙間拡大か進むという問題点があっ
た。However, with the assembled mold in which only the notches 24 are made on both sides of the short side member 21 and located above the molten metal level, is it possible to prevent the gap near the surface from expanding? Regarding the lower part, there was a problem that the surface roughness of the abutting long piece members became rough at an early stage, so the abutment surface of the short piece members would gall and the gap would expand.
この発明は、従来技術の上記のような問題点を解消し、
連続鋳造用組立鋳型の長辺部材と短辺部材との当接部の
間隙が拡大しない組立鋳型を提供することを目的として
いる。This invention solves the above-mentioned problems of the prior art,
It is an object of the present invention to provide an assembled mold for continuous casting in which a gap between a contact portion between a long side member and a short side member does not increase.
[課題を解決するための手段]
この発明に係る組立鋳型は、鋳造領域を取囲むように複
数の鋳型部材を組合わせる組立鋳型において、その壁面
が所定のrI!I隔をもって対向する1対の第1の鋳型
部材と、これら1対の第1の鋳型部材の間に設けられ、
前記鋳造領域を所定の輻で仕切る1対の第2の鋳型部材
と、これら1対の第2の鋳型部材の両側面に、前記第1
の鋳型部材の対向壁面をそれぞれ当接させて押付ける押
付は手段とを有し、前記第2の鋳型部材の両側面で、か
つ湯面より上方に位置するところおよび下端部に切欠き
か形成されている組立鋳型である。[Means for Solving the Problems] An assembled mold according to the present invention is an assembled mold in which a plurality of mold members are combined so as to surround a casting area, and the wall surface thereof has a predetermined rI! A pair of first mold members facing each other with a distance of I, and a pair of first mold members provided between the pair of first mold members,
A pair of second mold members partitioning the casting area with a predetermined radius, and a second mold member having the first mold member on both sides of the pair of second mold members.
The pressing means for bringing the opposing wall surfaces of the second mold member into contact with each other and pressing the second mold member has a means, and notches are formed on both sides of the second mold member at positions above the molten metal level and at the lower end. This is an assembled mold.
[作用]
この発明に係る組立鋳型においては、第二の鋳型部材の
両側面でかつ湯面よりも上方に位置するところ、および
第二の鋳型部材の両側面で一番下端に位置するところに
、切欠きを形成しているので、湯面上方領域および鋳型
下端部において第二の鋳型部材か第一の鋳型部材に対し
て非接触となリ、湯面直下領域および鋳型下端部におけ
る局部残留応力か大幅に緩和される。このため、第二の
鋳型部材に塑性歪みが実質的に生しなくなり、第一およ
び第二の鋳型部材の当接部の間隙が実質的に拡大せず、
溶鋼の差込みを有効に防止しつつ鋳型を連続使用するこ
とが可能になる。[Function] In the assembled mold according to the present invention, the parts located on both sides of the second mold member and above the molten metal level, and the parts located at the lowest end of both sides of the second mold member Since the notch is formed, there is no contact with the second mold member or the first mold member in the area above the hot water level and the lower end of the mold, and there is no localized residue in the area just below the hot water level and the lower end of the mold. Stress is significantly alleviated. Therefore, plastic strain does not substantially occur in the second mold member, and the gap between the contact portions of the first and second mold members does not substantially expand.
It becomes possible to use the mold continuously while effectively preventing insertion of molten steel.
[実施例]
本発明の1実施例の組立鋳型を、第1図〜第6図により
説明する。第1図は本発明の1実施例の組立鋳型を側方
から見た縦断面図、第2図はこの組立鋳型を上方から見
た横断面図である。鋳型1は、所定断面形状のスラブを
連続鋳造するための組立鋳型であり、その鋳型部材は銅
合金でつくられている。鋳型1は、1対の長辺部材2,
3および1対の短辺部材4を有しており、1対の長辺部
材2.3かクランプされている。すなわち、1対の長辺
部材2.3の壁面は、所定の間隔(鋳造されるべきスラ
ブの厚さに対応する間隔)をもって相互に向き合ってい
る。1対の短辺部材4か、長辺部材2の内壁から長辺部
材3の内壁までそれぞれ設けられ、鋳造領域5の輻が所
定の長さに仕切られている。各短辺部材4の外面にスク
リュウジヤツキ6の先端かそれぞれ連結されている。そ
して、スクリュウジヤツキ6を作動させると、各短辺部
材4が長辺部材2,3の相互間で移動し、輻替えかでき
るようになっている。[Example] An assembled mold according to an example of the present invention will be explained with reference to FIGS. 1 to 6. FIG. 1 is a longitudinal cross-sectional view of an assembled mold according to an embodiment of the present invention, viewed from the side, and FIG. 2 is a cross-sectional view of the assembled mold, viewed from above. The mold 1 is an assembly mold for continuously casting slabs having a predetermined cross-sectional shape, and its mold members are made of a copper alloy. The mold 1 includes a pair of long side members 2,
3 and a pair of short side members 4, and the pair of long side members 2.3 are clamped. That is, the wall surfaces of the pair of long side members 2.3 face each other with a predetermined interval (an interval corresponding to the thickness of the slab to be cast). A pair of short side members 4 or from the inner wall of the long side member 2 to the inner wall of the long side member 3 are provided, respectively, and the radius of the casting area 5 is partitioned into a predetermined length. The tips of screw jacks 6 are connected to the outer surface of each short side member 4, respectively. When the screw jack 6 is operated, each short side member 4 moves between the long side members 2 and 3, so that the rotation can be changed.
クランプ用のポルト7か長辺部材2および3の両端に貫
通しており、長辺部材3の側においてスペーサ8、皿バ
ネ9を介してナツトlOで締めつけられている。1対の
長辺部材2,3および1対の短辺部材4は、その内部に
多数の冷却水路(図示せず)が形成され、各水路に冷却
水か供給されて各部材ごとに水冷されるようになってい
る。すなわち、鋳造領域5の溶鋼か周囲の鋳型に接触し
て冷却されると、薄い凝固殻11か鋳壁面に沿って形成
されるようになっている。A port 7 for clamping passes through both ends of the long side members 2 and 3, and is tightened with a nut 10 via a spacer 8 and a disc spring 9 on the side of the long side member 3. The pair of long side members 2, 3 and the pair of short side members 4 have a large number of cooling water channels (not shown) formed therein, and cooling water is supplied to each water channel to cool each member. It has become so. That is, when the molten steel in the casting region 5 comes into contact with the surrounding mold and is cooled, a thin solidified shell 11 is formed along the casting wall surface.
次に、鋳片厚み220mm、輻970mmから2000
mmまで可変のスラブ連続鋳造機に適用した実施例を第
3図〜第5図により説明をする。因みに、短辺部材4は
、上端部の幅か約230 mm、下端部の輻か基準面で
約228mm、全体の長さが約954 mm。Next, from the slab thickness of 220 mm and the radius of 970 mm,
An embodiment applied to a continuous slab casting machine that is variable up to mm will be described with reference to FIGS. 3 to 5. Incidentally, the width of the short side member 4 at the upper end is approximately 230 mm, the width at the lower end is approximately 228 mm at the reference plane, and the total length is approximately 954 mm.
厚みは上端から下端まで途中2段に勾配変更線をもって
上部の凝固収縮勾配が大きい形状にし、上端部の厚さが
約40mm、下端部の厚さか約48mmである。短辺部
材4は、長辺部材との当接部4aおよび4bをその両側
面に有しており、当接部4aおよび4bの上端から50
mmの範囲、および下端から120mmの範囲が機械切
削されて、上部切欠き部12および下部切欠き部13が
形成されている。ここに、上端から50+nmの範囲と
は、定常状態のメニスカスにおけるパウダー層の最も高
い高さであり、下端から120mmの範囲とは、ダミー
バーを挿入し、シール部材をセットした寸法より、余裕
を もって下方になる寸法であって、定常鋳込み時には
鋳片コーナーの密着冷却の不要な範囲である。本発明の
特徴である切欠きについては、上部切欠き部12の深さ
は0.311IIIlになるように、4aの面から角を
落とした面で仕上げ、上端においても接触をし、途中で
応力の急変する点の発生もないようにする。また、下部
切欠き部13の切削深さは1.0mmになるように、4
a(或いは4b)の基準面に平行な面で仕上げ4aの面
との接続部は滑らかに仕上げる。そして、下部切欠き部
13の鋳型空孔側の稜線から5mmの部分は面取りして
、長片部材の面荒れが短片部材のカジリを引き起こさな
いように押さえ込み出来る構造にする。そしてまた、上
部切欠き部12と当接部4aおよび4bと下部切欠き部
13との鋳型空孔側より15mmの領域は、Niを厚<
(0,3から0.5mm)メツキして仕上げした寸法で
ある。溶鋼を冷却し凝固させる作用面である鋳型空孔側
面は、定常鋳込み時のメニスカスより下一定寸法から下
端までをNiを厚くメツキして仕上げる。The thickness is made into a shape with slope change lines in two stages from the top end to the bottom end, with a large solidification and contraction gradient at the top, and the thickness at the top end is about 40 mm, and the thickness at the bottom end is about 48 mm. The short side member 4 has abutting portions 4a and 4b with the long side member on both sides thereof, and is 50 mm from the upper end of the abutting portions 4a and 4b.
The upper notch 12 and the lower notch 13 are formed by machine cutting in a range of mm and a range of 120 mm from the lower end. Here, the range of 50+nm from the top end is the highest height of the powder layer in the meniscus in a steady state, and the range of 120mm from the bottom end is the range with a margin greater than the dimension when the dummy bar is inserted and the sealing member is set. This is a downward dimension, and is in a range where close cooling of the corner of the slab is not required during steady pouring. Regarding the notch, which is a feature of the present invention, the depth of the upper notch part 12 is 0.311IIIl, and the surface is finished with a corner cut off from the surface of 4a. Avoid the occurrence of sudden points of change. In addition, the cutting depth of the lower notch 13 is 4 mm so that it is 1.0 mm.
A (or 4b) is a surface parallel to the reference surface, and the connection portion with the surface of finishing 4a is finished smoothly. A portion of the lower notch 13 5 mm from the ridgeline on the side of the mold cavity is chamfered to create a structure in which the surface roughness of the long piece member can be held down so that it does not cause galling of the short piece member. Furthermore, the area of 15 mm from the mold hole side between the upper notch 12, the contact parts 4a and 4b, and the lower notch 13 is coated with Ni to a thickness <
(0.3 to 0.5 mm) The dimensions are plated and finished. The side surface of the mold cavity, which is the active surface for cooling and solidifying molten steel, is finished by thickly plating Ni from a certain dimension below the meniscus during steady pouring to the bottom end.
次に、上記鋳型を用いて、輻の異なったスラブを連続鋳
造する場合の輻替えについて説明する。Next, a description will be given of changing the radius when continuously casting slabs with different radius using the above-mentioned mold.
先ず、クランプポルト7を緩め、スクリュウ6により短
辺部材4を移動させ、鋳造領域の幅を調節する。そして
、長辺部材2および3をクランプする。このようにした
後、鋳型lの下方にダミーバ(図示せず)を挿入し、鋳
造準備が整うと、タンデイシュノズル(図示せず)を開
け、浸漬ノズル(図示せず)を介して鋳型lの鋳造領域
5に溶鋼を注入する。湯面が所定の高さに到達すると、
ダミーバを所定の速度で引抜き、湯面の高さを一定の高
さに維持するようにする。鋳造の定常状態において、第
1図に示すように、湯面が上部切欠き部12の下方に位
置するように、溶鋼注入量および鋳片引抜き速度を制御
する。First, the clamp port 7 is loosened, and the short side member 4 is moved by the screw 6 to adjust the width of the casting area. Then, the long side members 2 and 3 are clamped. After doing this, a dummy bar (not shown) is inserted under the mold l, and when the preparation for casting is completed, the tundish nozzle (not shown) is opened and the mold is inserted through the submerged nozzle (not shown). Molten steel is injected into the casting area 5 of l. When the water level reaches a certain height,
The dummy bar is pulled out at a predetermined speed to maintain the level of the hot water at a constant level. In the steady state of casting, the molten steel injection amount and slab withdrawal speed are controlled so that the molten metal level is located below the upper notch 12, as shown in FIG.
溶鋼が鋳型に接触すると、短辺部材4が膨張して、短辺
部材4の当接部4aおよび4bに力が加わる。短辺部材
4は幅方向を長辺部材2および3により拘束されている
が、上部切欠き部12および下部切欠き部13にて短辺
部材4の長辺部材2および3とが非接触であるため、短
辺部材4の当接部4aおよび4bに加わる力が緩和され
る。このため、短辺部材4の当接部4aおよび4bが弾
性限界を超えて変形しなくなり、両部材間の間隙の拡大
が回避される。第6図は、横軸に鋳型内壁の温度をとり
、縦軸に鋳型材料の0.2%耐力をとって、両者の関係
について調べた結果を示すグラフ図である。図から明ら
かなように、銅製鋳型の強度は300°Cを超えると急
激に低下する。−般に、湯面下の鋳型内壁温度は300
°Cを超える温度に到達するので、短辺部材4の当接部
4aおよび4bが全面にわたり拘束されると、熱膨張に
より生じる力が鋳型材料の弾性歪み限界を容易に超える
ようになる。しかしながら、上記鋳型では短辺部材の当
接部の上下端を切欠いているので、応力が緩和され、部
材間の間隙の拡大が回避される。When the molten steel contacts the mold, the short side member 4 expands, and force is applied to the contact portions 4a and 4b of the short side member 4. The short side member 4 is restrained in the width direction by the long side members 2 and 3, but the short side member 4 is not in contact with the long side members 2 and 3 at the upper notch 12 and the lower notch 13. Therefore, the force applied to the contact portions 4a and 4b of the short side member 4 is alleviated. Therefore, the contact portions 4a and 4b of the short side member 4 are not deformed beyond their elastic limit, and the gap between the two members is prevented from expanding. FIG. 6 is a graph showing the results of an investigation into the relationship between the mold inner wall temperature on the horizontal axis and the 0.2% proof stress of the mold material on the vertical axis. As is clear from the figure, the strength of the copper mold decreases rapidly when the temperature exceeds 300°C. -Generally, the temperature of the inner wall of the mold below the hot water level is 300
When temperatures exceeding .degree. C. are reached and the abutment portions 4a and 4b of the short side members 4 are restrained over their entire surface, the forces generated by thermal expansion easily exceed the elastic strain limit of the mold material. However, in the above mold, the upper and lower ends of the abutting portions of the short side members are cut out, so that the stress is relaxed and the gap between the members is prevented from increasing.
そしてまた、鋳型の輻替え作業時において、下部切欠き
部13の面は4aの基準面から1.Ommになるように
仕上げであるので、接触か緩やかであって、短辺部材が
長片部材の上を滑動する時に長片部材の上の障害物をカ
ジリを引き起こさずに削ぎ落とすことができる。また、
下部切欠き部13の鋳型空孔側の稜線から5mmの部分
は面取りしであるので、長片部材の面荒れが短片部材の
カジリを引き起こさないように押さえ込み出来る。Also, during mold replacement work, the surface of the lower notch 13 is 1.0 mm from the reference surface of 4a. Since the finish is 0 mm, the contact is gentle, and when the short side member slides on the long side member, obstacles on the long side member can be scraped off without causing galling. Also,
Since the portion of the lower notch 13 5 mm from the ridgeline on the mold hole side is chamfered, the roughness of the surface of the long piece member can be suppressed so that it does not cause galling of the short piece member.
そして、上部切欠き部12と当接部4aおよび4bと下
部切欠き部13との鋳型空孔側の領域はNiを厚くメツ
キして仕上げしであるので、長片部材の表面から引込み
された夾雑物も、短片部材のカジリを引き起こさないよ
うに押さえ込み出来る。The areas on the mold hole side of the upper notch 12, the contact parts 4a and 4b, and the lower notch 13 are plated with a thick layer of Ni, so that the areas drawn in from the surface of the elongated member are plated with a thick layer of Ni. Contaminants can also be suppressed to prevent galling of the short pieces.
なお、上記実施例では、スラブ用の鋳型について説明し
たが、これに限られることなく、ブルーム、ビレット、
ビームブランク等の他の鋳片を連続鋳造するための鋳型
に適用することも可能である。In addition, although the above-mentioned example explained the mold for slab, it is not limited to this, and mold for bloom, billet,
It is also possible to apply it to a mold for continuous casting of other slabs such as beam blanks.
[発明の効果]
この発明により、連続鋳造用組立鋳型の寿命を大幅に延
長することができる。[Effects of the Invention] According to the present invention, the life of an assembled mold for continuous casting can be significantly extended.
第1図は本発明の1実施例の組立鋳型を側方から見た縦
断面図、第2図は本発明の1実施例の組立鋳型を上方か
ら見た横断面図、第3図は鋳型の短辺部材を示す正面図
、第4図は短辺部材の側面図、第5図′は短辺部材の平
面図、第6図は各温度における鋳型の強度を示すグラフ
図、第7図は従来の組立鋳型が熱変形を受けたときの状
態を説明するための模式図、第8図は冷間における従来
の組立鋳型の一部を示す斜視図、第9図は従来の他の鋳
型の短辺部材の正面図である。
l・・・鋳型、2.3・・・長辺部材、4・・・短辺部
材、4a、4b・・・短辺部材の長辺部材との当接部、
12・・・上部切欠き部、13・・・下部切欠き部。Fig. 1 is a vertical cross-sectional view of an assembled mold according to an embodiment of the present invention as seen from the side, Fig. 2 is a cross-sectional view of an assembled mold according to an embodiment of the present invention seen from above, and Fig. 3 is a mold Fig. 4 is a side view of the short side member, Fig. 5' is a plan view of the short side member, Fig. 6 is a graph showing the strength of the mold at each temperature, Fig. 7 is a schematic diagram for explaining the state when a conventional assembled mold undergoes thermal deformation, FIG. 8 is a perspective view showing a part of the conventional assembled mold in a cold state, and FIG. 9 is another conventional mold. It is a front view of the short side member of. l... Mold, 2.3... Long side member, 4... Short side member, 4a, 4b... Contact portion of short side member with long side member,
12... Upper notch part, 13... Lower notch part.
Claims (1)
立鋳型において、その壁面が所定の間隔をもって対向す
る1対の第1の鋳壁部材と、これら1対の第1の鋳壁部
材の間に設けられ、前記鋳造領域を所定の幅で仕切る1
対の第2の鋳壁部材と、これら1対の第2の鋳壁部材の
両側面に、前記第1の鋳壁部材の対向壁面をそれぞれ当
接させて押付ける押付け手段とを有し、前記第2の鋳壁
部材の両側面で、かつ湯面より上方に位置するところお
よび下端部に切欠きが形成されていることを特徴とする
組立鋳型。In an assembled mold in which a plurality of mold members are combined so as to surround a casting area, a pair of first mold wall members whose wall surfaces face each other with a predetermined interval, and a space between the pair of first mold wall members. 1 provided in the casting area and partitioning the casting area with a predetermined width.
a pair of second cast wall members, and pressing means for abutting and pressing opposing wall surfaces of the first cast wall members on both side surfaces of the pair of second cast wall members, respectively; An assembled mold characterized in that notches are formed on both side surfaces of the second casting wall member at positions above the molten metal level and at the lower end.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30661690A JPH04178246A (en) | 1990-11-13 | 1990-11-13 | Builtup casting mold |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP30661690A JPH04178246A (en) | 1990-11-13 | 1990-11-13 | Builtup casting mold |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04178246A true JPH04178246A (en) | 1992-06-25 |
Family
ID=17959228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP30661690A Pending JPH04178246A (en) | 1990-11-13 | 1990-11-13 | Builtup casting mold |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04178246A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007536091A (en) * | 2004-05-04 | 2007-12-13 | エス・エム・エス・デマーク・アクチエンゲゼルシャフト | Cooling continuous casting mold |
JP2013031867A (en) * | 2011-08-01 | 2013-02-14 | Mishima Kosan Co Ltd | Casting mold for continuous casting |
-
1990
- 1990-11-13 JP JP30661690A patent/JPH04178246A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007536091A (en) * | 2004-05-04 | 2007-12-13 | エス・エム・エス・デマーク・アクチエンゲゼルシャフト | Cooling continuous casting mold |
JP4819038B2 (en) * | 2004-05-04 | 2011-11-16 | エス・エム・エス・ジーマーク・アクチエンゲゼルシャフト | Cooling continuous casting mold |
JP2013031867A (en) * | 2011-08-01 | 2013-02-14 | Mishima Kosan Co Ltd | Casting mold for continuous casting |
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