JPH0444299Y2 - - Google Patents
Info
- Publication number
- JPH0444299Y2 JPH0444299Y2 JP8567487U JP8567487U JPH0444299Y2 JP H0444299 Y2 JPH0444299 Y2 JP H0444299Y2 JP 8567487 U JP8567487 U JP 8567487U JP 8567487 U JP8567487 U JP 8567487U JP H0444299 Y2 JPH0444299 Y2 JP H0444299Y2
- Authority
- JP
- Japan
- Prior art keywords
- dummy bar
- mold
- head
- molten metal
- gas
- 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
Links
- 239000002184 metal Substances 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000009749 continuous casting Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 239000002826 coolant Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000013022 venting Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は横型連続鋳造用ダミーバーに関し、特
には、ダミーバーヘツド部に改良されたガス抜き
孔を有する横型連続鋳造用ダミーバーに関するも
のである。[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a dummy bar for horizontal continuous casting, and more particularly to a dummy bar for horizontal continuous casting having an improved gas vent hole in the dummy bar head.
（従来の技術）
横型連続鋳造設備における鋳造開始前のダミー
バー、鋳型およびタンデイツシユの据付状態は第
４図に示す通りで、その据付手順は、先ずダミー
バー１のヘツド部２にヘツドピン３を挿着し、該
ヘツドピン３の抜け止めピン４を横方向から挿着
してヘツドピン３の抜け止めとする。次いで、ダ
ミーバー１をダミーバー１のヘツド部２を先にし
て鋳型５の引抜き口６からピンチロール（図示せ
ず）により鋳型内の所定位置まで送り込み、その
位置で、ヘツド部外周面７と鋳型内周面８との隙
間９にシール材１０を詰めて密閉構造とした後ヘ
ツド部２の受湯面１１の表面に冷却材１２を付装
し、次いで、前記密閉構造とした鋳型５を接続リ
ング１３を介してタンデイツシユ１４の出湯口１
５に押付けて、鋳型５、接続リング１３およびタ
ンデイツシユ１４の相互間を密閉構造とする。(Prior art) The installation state of the dummy bar, mold, and tundish before starting casting in horizontal continuous casting equipment is as shown in FIG. A retaining pin 4 of the head pin 3 is inserted from the lateral direction to prevent the head pin 3 from coming off. Next, the dummy bar 1 is fed through the pull-out port 6 of the mold 5 to a predetermined position in the mold using pinch rolls (not shown), with the head part 2 of the dummy bar 1 first, and at that position, the outer peripheral surface 7 of the head part and the inside of the mold are After filling the gap 9 with the peripheral surface 8 with a sealing material 10 to create a sealed structure, a coolant 12 is attached to the surface of the molten metal receiving surface 11 of the head part 2, and then the mold 5 with the sealed structure is attached to the connecting ring. 13 to the outlet 1 of the tundish 14
5 to form a sealed structure between the mold 5, the connecting ring 13, and the tundish 14.
この様に横型連続鋳造においては、鋳造初期あ
るいは鋳造中の溶湯洩れを防止するために、ダミ
ーバー１、鋳型５およびタンデイツシユ１４の相
互間を密閉構造にするが、鋳造初期に次の様な問
題を生じる。即ち、取鍋（図示せず）からの溶湯
はタンデイツシユ１４に注湯され、所定量注湯し
た後タンデイツシユ１４の出湯口１５に設けられ
た開閉手段又は閉塞手段（図示せず）が開けら
れ、鋳型５のキヤビテイ１６へと注湯される。キ
ヤビテイ１６に注湯された溶湯は、キヤビテイ１
６内の鋳型５の下内周面から上内周面へと上昇す
る。この時、キヤビテイ１６内のガス（空気等）
は溶湯の上昇につれキヤビテイ１６の上方へと追
いやられる。このため、ガス圧によつてシールが
損なわれる場合が生じ、溶湯がヘツド部外周面７
と鋳型内周面８との隙間９に差し込み、ダミーバ
ー１の引抜き抵抗が増して鋳造が不能になつた
り、あるいは、シールが損なわれない場合は、鋳
片上面部はガス溜りにより鋳型５からの冷却が不
充分になり、ダミーバー１のヘツド部２が鋳型５
を出たところでブレークアウトを生じ鋳造不能に
なる等のトラブルを生じる。このようなトラブル
を防止するため、鋳造初期のガス抜きを行なう必
要がある。 In this way, in horizontal continuous casting, the dummy bar 1, the mold 5, and the tundish 14 are sealed to each other in order to prevent molten metal from leaking in the initial stage of casting or during casting, but the following problems occur in the early stage of casting. arise. That is, molten metal from a ladle (not shown) is poured into the tundish 14, and after a predetermined amount of the molten metal is poured, an opening/closing means or a closing means (not shown) provided at the outlet 15 of the tundish 14 is opened. Molten metal is poured into the cavity 16 of the mold 5. The molten metal poured into cavity 16 is
6 rises from the lower inner circumferential surface of the mold 5 to the upper inner circumferential surface. At this time, the gas (air, etc.) inside the cavity 16
is driven above the cavity 16 as the molten metal rises. For this reason, the seal may be damaged by the gas pressure, and the molten metal may leak to the outer peripheral surface of the head.
If the dummy bar 1 is inserted into the gap 9 between the dummy bar 1 and the inner peripheral surface 8 of the mold, the pull-out resistance of the dummy bar 1 increases and casting becomes impossible, or if the seal is not damaged, the top surface of the dummy bar 1 will be removed from the mold 5 due to gas accumulation. Due to insufficient cooling, the head portion 2 of the dummy bar 1 is damaged by the mold 5.
A breakout occurs at the point where it exits, causing problems such as the inability to cast. To prevent such troubles, it is necessary to vent gas at the initial stage of casting.
そこで、従来は、叙上に問題に鑑み、第４図に
示すようなダミーバーが使用されている。該ダミ
ーバーの構造は、ヘツド部２のヘツドピン挿着孔
１７とヘツド部外周面７との間に貫通孔１８を穿
設する一方、挿着するヘツドピン３には軸心部に
貫通孔１９を穿設し、該貫通孔１９のピンヘツド
２０にはＬ字型ガス抜き管２１を挿着している。
そして、該Ｌ字型ガス抜き管２１の先端を鋳型５
の上内周面近傍に位置するようにセツトして鋳造
が行なわれている。 Conventionally, in view of the above-mentioned problems, a dummy bar as shown in FIG. 4 has been used. The structure of the dummy bar is such that a through hole 18 is bored between the head pin insertion hole 17 of the head section 2 and the head section outer peripheral surface 7, and a through hole 19 is bored in the axial center of the head pin 3 to be inserted. An L-shaped gas vent pipe 21 is inserted into the pin head 20 of the through hole 19.
Then, the tip of the L-shaped gas vent pipe 21 is attached to the mold 5.
Casting is carried out by setting it so that it is located near the upper inner circumferential surface of.
（考案が解決しようとする問題点）
前述のガス抜き構造は、鋳造初期のガス抜き機
能は満足したものが得られるが、ヘツドピンにガ
ス抜き孔を穿設し、該ガス抜き孔にＬ字型ガス抜
き管を挿着して準備しなければならず、中実ヘツ
ドピンに比較して作業工数が大巾にかかりコスト
高となつている。(Problems to be solved by the invention) The above-mentioned gas venting structure can provide a satisfactory gas venting function at the initial stage of casting, but a gas venting hole is formed in the head pin, and the gas venting hole is L-shaped. A gas vent pipe must be inserted and prepared, which requires more man-hours and is more costly than with solid head pins.
（問題点を解決するための手段）
本考案は、前述の問題点を解決するためになさ
れたもので、その要旨は、横型連続鋳造用ダミー
バーのヘツド部受湯面にヘツドピンを設け、且
つ、ヘツド部受湯面上部にヘツド部外周面と連通
するガス抜き孔を穿設し、該ガス抜き孔へ通気性
耐火物を埋設したことにある。(Means for solving the problem) The present invention was made to solve the above-mentioned problem, and its gist is that a head pin is provided on the metal receiving surface of the head part of a dummy bar for horizontal continuous casting, and A gas vent hole communicating with the outer circumferential surface of the head portion is formed in the upper part of the hot water receiving surface of the head portion, and a breathable refractory is buried in the gas vent hole.
（実施例） 以下本考案を実施例により詳細に説明する。(Example) The present invention will be explained in detail below with reference to examples.
第１図および第２図は本考案ダミーバーの説明
図である。 1 and 2 are explanatory diagrams of the dummy bar of the present invention.
ダミーバー１は中実丸棒鋼で造られ、そのヘツ
ド部２の受湯面１１側には、ヘツドピン３を挿着
するための挿着孔１７とガス抜き用の通気性耐火
物２２を埋設するためのガス抜き孔２３の大径部
２４とが穿設されている。そして、さらに、ガス
抜き孔２３には、ヘツド部２の外周面７との間に
ガス通路用の小径部２５が穿設されている。 The dummy bar 1 is made of a solid round steel bar, and an insertion hole 17 for inserting the head pin 3 and an air-permeable refractory material 22 for degassing are buried on the molten metal receiving surface 11 side of the head portion 2. A large diameter portion 24 of a gas vent hole 23 is bored. Further, a small diameter portion 25 for a gas passage is formed in the gas vent hole 23 between the gas vent hole 23 and the outer circumferential surface 7 of the head portion 2 .
尚、２５はヘツドピン３の抜け止めピン４を挿
着するための貫通孔である。 Note that 25 is a through hole for inserting the retaining pin 4 of the head pin 3.
次に、第３図を基に本考案ダミーバーの使い方
および作用を説明する。 Next, the usage and operation of the dummy bar of the present invention will be explained based on FIG.
叙上のように、ヘツドピン３と通気性耐火物２
２を設けたダミーバー１をダミーバー１の受湯面
１１側を先にして鋳型５の鋳片引抜き口６からピ
ンチロール（図示せず）により鋳型内の所定位置
まで送り込み、その位置で、ヘツド部外周面７と
鋳型内周面８との隙間９にシール材１０を詰めて
密閉構造とした後、ヘツド部２の受湯面１１の表
面に冷却材１２を付装し、次いで、前記密閉構造
とした鋳型５を接続リング１３を介してタンデイ
ツシユ１４の出湯口１５に押付けて、鋳型５、接
続リング１３およびタンデイツシユ１４の相互間
を密閉構造とする。 As mentioned above, head pin 3 and breathable refractory 2
The dummy bar 1 with the metal receiving surface 11 side of the dummy bar 1 first is fed through the slab withdrawal port 6 of the mold 5 to a predetermined position in the mold using pinch rolls (not shown). After filling the gap 9 between the outer peripheral surface 7 and the mold inner peripheral surface 8 with a sealing material 10 to create a sealed structure, a coolant 12 is attached to the surface of the molten metal receiving surface 11 of the head part 2, and then the sealed structure is completed. The mold 5 thus prepared is pressed against the outlet 15 of the tundish 14 via the connecting ring 13, thereby creating a sealed structure between the mold 5, the connecting ring 13, and the tundish 14.
このように密閉構造にした横型連続鋳造設備の
タンデイツシユ１４に、取鍋（図示せず）等で搬
送した溶湯を注湯する。タンデイツシユ１４に注
湯された溶湯は、タンデイツシユ１４内に所定量
になるまで出湯口１５の開閉手段（図示せず）を
閉じて溜られ、その後、タンデイツシユ１４の出
湯口１５が開けられ鋳型５のキヤビテイ１６へと
注湯される。キヤビテイ１６に注湯された溶湯
は、ダミーバーヘツド部２の受湯面１１の下部お
よび鋳型５の下内周面から上方へと上昇してゆ
く、この溶湯の上昇過程においてキヤビテイ１６
内のガスは、ヘツド部２の上部に位置して設けら
れた通気性耐火物２２を通り、ガス抜き孔２３を
通つて、隙間９へと逃げる。従つて、溶湯がキヤ
ビテイ１６内を満たした時は、ガスはキヤビテイ
１６外に逸散しており、ガスに因るトラブルが無
くなる。 The molten metal conveyed by a ladle (not shown) or the like is poured into the tundish 14 of the horizontal continuous casting equipment having a closed structure as described above. The molten metal poured into the tundish 14 is collected in the tundish 14 until a predetermined amount is reached by closing the opening/closing means (not shown) of the tap 15, and then the tap 15 of the tundish 14 is opened and the mold 5 is filled. Molten metal is poured into cavity 16. The molten metal poured into the cavity 16 rises upward from the lower part of the molten metal receiving surface 11 of the dummy bar head 2 and the lower inner peripheral surface of the mold 5.
The gas inside passes through the breathable refractory 22 provided above the head portion 2, passes through the gas vent hole 23, and escapes into the gap 9. Therefore, when the cavity 16 is filled with molten metal, the gas is dissipated outside the cavity 16, and troubles caused by the gas are eliminated.
また、受湯面１１の表面には冷却材１２が付装
されているので、キヤビテイ１６内に注湯された
溶湯は冷却が促進され、且つ、受湯面１１と溶着
することが防止でき、さらに、通気性耐火物２２
を目詰らせることが防止できる。 In addition, since the coolant 12 is attached to the surface of the molten metal receiving surface 11, cooling of the molten metal poured into the cavity 16 is promoted, and it is possible to prevent welding to the molten metal receiving surface 11. Furthermore, the breathable refractory 22
can be prevented from clogging.
尚、通気性耐火物２２としては、セラミツク粉
末を軽圧下で焼結したものが使用される。 Note that as the breathable refractory 22, ceramic powder sintered under light pressure is used.
また、本実施例では断面円形鋳片を得る場合の
例を説明したが、断面角形鋳片であつてもダミー
バーを同様の構造にして使用し得る。 Further, in this embodiment, an example in which a slab with a circular cross section is obtained has been described, but even a slab with a square cross section can be used with a dummy bar having a similar structure.
（考案の効果）
本考案ダミーバーは、ガス抜き孔に通気性耐火
物を挿着した構造であるから、通気性耐火物が鋳
片内に鋳包まれることはなく、目詰まりを生じな
い限り繰返し使用することができ、鋳造前のダミ
ーバーヘツド部の準備作業が効率的にできる。(Effects of the invention) Since the dummy bar of this invention has a structure in which a breathable refractory is inserted into the gas vent hole, the breathable refractory is not wrapped inside the slab, and it can be used repeatedly as long as it does not become clogged. It can be used to efficiently prepare the dummy bar head before casting.
また、本考案ダミーバーを通気性耐火物を挿着
したガス抜き孔がキヤビテイの上部に位置するよ
うに鋳型にセツトすることにより、鋳造初期キヤ
ビテイ内のガスはキヤビテイ外に逸散するので、
ガス圧によるシールの破損あるいは初期鋳片への
ガスの巻き込みが防止できる。 In addition, by setting the dummy bar of the present invention in the mold so that the gas vent hole into which the breathable refractory is inserted is located at the top of the cavity, the gas in the cavity at the initial stage of casting will dissipate outside the cavity.
Breakage of the seal due to gas pressure or gas entrainment into the initial slab can be prevented.
第１図は本考案ダミーバーのヘツド部を切欠い
た説明図、第２図は第１図の受湯面側から見た一
部切欠説明図、第３図は本考案ダミーバーを鋳型
およびタンデイツシユに組付けた説明図、第４図
は従来構造のダミーバーを鋳型およびタンデイツ
シユに組付けた説明図である。
１……ダミーバー、２……ヘツド部、３……ヘ
ツドピン、４……抜け止めピン、５……鋳型、１
０……シール材、１１……受湯面、１２……冷却
材、１３……接続リング、１４……タンデイツシ
ユ、１５……出湯口、１６……キヤビテイ、１７
……ヘツドピン挿着孔、２２……通気性耐火物、
２３……ガス抜き孔、２６……抜け止めピン挿着
孔。
Figure 1 is an explanatory diagram with the head portion of the dummy bar of the present invention cut away, Figure 2 is a partially cutaway explanatory diagram of the dummy bar of the present invention seen from the metal receiving surface side, and Figure 3 is an explanatory diagram of the dummy bar of the present invention assembled into a mold and a tundish. The attached explanatory diagram, FIG. 4, is an explanatory diagram showing a dummy bar of a conventional structure assembled to a mold and a tundish. 1...Dummy bar, 2...Head part, 3...Head pin, 4...Keeping pin, 5...Mold, 1
0... Seal material, 11... Molten metal receiving surface, 12... Coolant, 13... Connection ring, 14... Tundish, 15... Tap water outlet, 16... Cavity, 17
... Head pin insertion hole, 22 ... Breathable refractory material,
23... Gas vent hole, 26... Retention pin insertion hole.
Claims (1)
ヘツドピンを設け、且つ、ヘツド部受湯面上部に
ヘツド部外周面と連通するガス抜き孔を穿設し、
該ガス抜き孔へ通気性耐火物を埋設したことを特
徴とする横型連続鋳造用ダミーバー。 A head pin is provided on the metal receiving surface of the head portion of a dummy bar for horizontal continuous casting, and a gas vent hole is bored in the upper part of the metal receiving surface of the head portion to communicate with the outer peripheral surface of the head portion,
A dummy bar for horizontal continuous casting, characterized in that a breathable refractory is embedded in the gas vent hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8567487U JPH0444299Y2 (en) | 1987-06-01 | 1987-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8567487U JPH0444299Y2 (en) | 1987-06-01 | 1987-06-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63196338U JPS63196338U (en) | 1988-12-16 |
| JPH0444299Y2 true JPH0444299Y2 (en) | 1992-10-19 |
Family
ID=30941291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8567487U Expired JPH0444299Y2 (en) | 1987-06-01 | 1987-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444299Y2 (en) |
-
1987
- 1987-06-01 JP JP8567487U patent/JPH0444299Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63196338U (en) | 1988-12-16 |
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