JPS6154509B2 - - Google Patents
Info
- Publication number
- JPS6154509B2 JPS6154509B2 JP7131981A JP7131981A JPS6154509B2 JP S6154509 B2 JPS6154509 B2 JP S6154509B2 JP 7131981 A JP7131981 A JP 7131981A JP 7131981 A JP7131981 A JP 7131981A JP S6154509 B2 JPS6154509 B2 JP S6154509B2
- Authority
- JP
- Japan
- Prior art keywords
- lining
- side wall
- bricks
- construction method
- 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
Links
- 239000002184 metal Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000011823 monolithic refractory Substances 0.000 claims description 6
- 239000011449 brick Substances 0.000 description 16
- 238000010276 construction Methods 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 239000011819 refractory material Substances 0.000 description 5
- 239000002893 slag Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009415 formwork Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011465 paving brick Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
本発明は鉄鋼製造業で使用する取鍋等の溶融金
属容器のライニング（内張り耐火物）の施工方法
の改良に関するもので、具体的には内張り耐火物
全体の中で最も異常溶損し易い場所である側壁と
敷との境界部の損傷を防止すると同時に作業性の
よい内張り施工方法を提供し、溶融金属容器の使
用寿命の向上を図ることを目的とする。
従来の溶融金属容器の内張りは第１図に取鍋の
例で示す如く、側壁内張り２の下端部が敷内張り
煉亙３の上面から直接立上る構造で築造されてい
た。従つて両者内張り耐火物は平面接触でありこ
の部位の窒着性が弱いので、この部分に取鍋内の
溶鋼もしくは溶滓が浸入し易く、取鍋への数回の
受鋼後内張り耐火物が加熱され膨脹して該接触面
がなじむまでは溶鋼溶滓の浸入が続くことにな
る。さらに使用回数が多くなると一般的に側壁内
張り２の耐火物より敷内張り３の耐火物の方が熔
損が激しいことから、第２図に示す溶損部４の如
く側壁内張り２の下部が空胴状態となり、さらに
敷内張り３の溶損の進行に伴つて側壁内張り２も
下端から溶損されたり剥離して側壁永久張り煉瓦
１まで損傷が及ぶことがある。その対策としては
(1) 第１図に示す如く、側壁内張り２の下部の内
壁に沿つて全周に亘つて側壁保護煉瓦積５を数
段施工して側壁内張り２と敷内張り３との接触
面を保護する方法。
(2) 側壁内張り２の下部に位置する敷内張り煉瓦
を、その他の敷内張り煉瓦より耐溶損性の優れ
た材質を使用して施工する方法。
(3) 側壁内張り下部と敷内張りとの接触面を平面
接触とせず複雑面とする。例へば接触面に凸凹
状、波形状の煉瓦を使用して接触面積を大きく
しかつ密着性を高め溶鋼の浸入を妨害する施工
方法がある。
前記(1)の旋工方法では、取鍋を10数回使用する
と側壁内張り２の内壁と側壁保護煉瓦積５との間
に間隙が生じ、そこに溶鋼や溶滓が浸入して煉瓦
積の一部が内側に押し倒され一部が脱落すると、
円周方向に目地開きが生じて早期に全体が脱落す
るに至るので効果はうすくまた不経済であつた。
また前記(2)の敷内張り煉瓦３の外周部を耐溶損
性の高い煉瓦で築造した場合では、溶損程度は減
少するが側壁と敷の平面接触に基因する目地への
溶鋼の浸透を防止することはできないという欠点
があつた。
また前記(3)の側壁下部に接する敷煉瓦を特殊形
状の煉瓦で築造することは溶鋼の差し込み防止に
効果はあるが、敷用の耐火煉瓦の形状種類が増加
し、また複雑形状の煉瓦は製造上の点で問題があ
る。
本発明は前記の平面接触を改良し、次に側壁内
張りをその下部が容器の中心方向に斜めに突出す
るように、不定形耐火物で目地なし一体構造にす
ることによつて溶鋼差し込みの完全防止と施工性
の向上を図るものである。
即ち本発明の要旨とするところは、敷内張りを
側壁永久張りに当接させることなく間隙部を設け
て築造し、ついで側壁内張りの下部が前記間隙部
と前記敷内張りの端部を覆いかつ容器の中心方向
へ突出する如く不定形耐火物で側壁内張りを築造
することを特徴とする溶融金属容器の側壁内張り
施工方法にある。
次に図面に基づいて本発明の施工方法を説明す
ると、第３図は取鍋における実施例で、６は敷永
久張りの耐火煉瓦であり、７はその上に築造され
た敷内張り耐火煉瓦で、７′は前記敷内張りの外
殻部分を形成する端部である。本発明において重
要な特徴の第１は、前記の端部７′は側壁永久張
り１との間に間隙部を設けて築造されることで、
この間隙部は側壁内張り８のライニング厚さに相
当する程度の巾を全周に亘つて空けておくのがよ
い。
次いで側壁内張り８を不定形耐火物で築造す
る。この際本発明では側壁内張り８の下部が、前
記間隙部と前記敷内張りの端部７′を総べて覆う
ように不定形耐火物で埋めることを第２の特徴と
している。従つて側壁内張り８は敷永久張り煉瓦
６と敷内張り煉瓦７の両面から立上つて築造され
る。さらに側壁内張り８の下部は第３図に示すよ
うに内側に傾斜面を作り取鍋の中心方向へ突出す
る如く形成させることを第３の特徴としている。
従つて側壁内張りは内側に突出した分だけライニ
ング厚さが厚くなつており、敷内張り端部７′を
少くとも80mm覆うように施工する。
この不定形耐火物による側壁内張り８の築造
は、敷内張り７の上に側壁内張り厚さと形状に対
応させた型枠（中子）を設置して流し込みによつ
て施工するのが好ましいが、他の施工方法例へば
コテ塗り、ガン吹付け等によつて施工してもよ
い。
本発明の施工方法は上記のような構成であるか
ら、容器内の溶鋼や溶滓が側壁永久張りに至る経
路は平面ではなく複雑に屈折しかつ距離も長くな
るので浸入を妨げられる。さらに側壁内張りは最
も溶損し易い下部が容器内に突出する如く厚く形
成され同時に敷内張りの端部をも保護することに
なるので、第２図に示すように溶損が進行して側
壁内張りの下部が空胴状態になることは完全に防
止できる。また側壁内張りと側壁内張りの下部保
護を１組の型枠で同時に施工できる効果がある。
次に示す第１表は本発明の側壁内張り施工方法
の実取鍋における実施例であり、第２表は第１表
の施工によるものと、第１図に示した従来の施工
によるものとの鍋成績の比較表である。
The present invention relates to an improvement in the construction method for lining (lining refractories) of molten metal containers such as ladles used in the steel manufacturing industry. Specifically, the present invention relates to improvements in the construction method for lining (lining refractories) of molten metal containers such as ladles used in the steel manufacturing industry. The purpose of the present invention is to provide a lining construction method that prevents damage to the boundary between a certain side wall and a lining and at the same time has good workability, thereby improving the service life of a molten metal container. The lining of a conventional molten metal container has been constructed in such a way that the lower end of the side wall lining 2 rises directly from the upper surface of the lining brick 3, as shown in the example of a ladle in FIG. Therefore, since the two lining refractories are in plane contact and the adhesion of this area is weak, molten steel or molten slag in the ladle easily infiltrates into this area, and the lining refractory lining is in contact with the lining refractory after receiving the steel several times in the ladle. The intrusion of molten steel slag continues until the contact surface is heated and expanded to fit the contact surface. Furthermore, as the number of times of use increases, the refractory material of the side wall lining 3 generally suffers more severe damage than the refractory material of the side wall lining 2, so the lower part of the side wall lining 2 becomes empty, as shown in the melted part 4 shown in Fig. 2. Further, as the lining 3 progresses, the side wall lining 2 may also be eroded or peeled off from its lower end, causing damage to the side wall permanent bricks 1. As a countermeasure, (1) as shown in Fig. 1, several stages of side wall protection brickwork 5 are constructed along the entire circumference of the lower inner wall of the side wall lining 2 to prevent contact between the side wall lining 2 and the floor lining 3; How to protect your face. (2) A method in which the lining bricks located at the bottom of the side wall lining 2 are constructed using a material that is more resistant to erosion than other lining bricks. (3) The contact surface between the lower part of the side wall lining and the floor lining should not be a flat surface but a complex surface. For example, there is a construction method that uses uneven or corrugated bricks on the contact surface to increase the contact area, improve adhesion, and prevent the infiltration of molten steel. In the turning method (1) above, when the ladle is used more than 10 times, a gap is created between the inner wall of the side wall lining 2 and the side wall protection brickwork 5, and molten steel and molten slag seep into the gap, causing the brickwork to deteriorate. When some parts are pushed inward and some parts fall off,
Since the joints opened in the circumferential direction and the whole part fell off at an early stage, the effect was weak and it was uneconomical. In addition, if the outer periphery of the lining brick 3 in (2) above is constructed with highly eroding-resistant bricks, the degree of eroding will be reduced, but penetration of molten steel into the joints due to the planar contact between the side walls and the lining will be prevented. The drawback was that it could not be done. In addition, constructing the paving bricks in contact with the lower part of the side walls in (3) above with specially shaped bricks is effective in preventing molten steel from entering, but the number of shapes of the refractory bricks for paving increases, and bricks with complicated shapes are There is a problem with manufacturing. The present invention improves the above-mentioned planar contact, and then makes the side wall lining a monolithic structure with no joints using a monolithic refractory so that the lower part of the side wall lining protrudes obliquely toward the center of the container. The aim is to prevent this and improve workability. That is, the gist of the present invention is to construct a container by providing a gap portion without bringing the liner into contact with the permanent sidewall liner, and then the lower part of the side wall liner covers the gap and the end of the liner. A method for constructing a side wall lining for a molten metal container, characterized by constructing the side wall lining with a monolithic refractory so as to protrude toward the center of the container. Next, the construction method of the present invention will be explained based on the drawings. Fig. 3 shows an example in a ladle, 6 is a permanent-lined refractory brick, and 7 is a lined refractory brick built on top of it. , 7' are the ends forming the outer shell portion of the lining. The first important feature of the present invention is that the end portion 7' is constructed with a gap provided between it and the side wall permanent tension 1.
It is preferable that this gap has a width corresponding to the lining thickness of the side wall lining 8 over the entire circumference. Next, the side wall lining 8 is constructed of monolithic refractory material. At this time, the second feature of the present invention is that the lower part of the side wall lining 8 is filled with a monolithic refractory so as to completely cover the gap and the end 7' of the lining. Therefore, the side wall lining 8 is constructed standing up from both sides of the permanent lining bricks 6 and the lining bricks 7. Furthermore, the third feature is that the lower part of the side wall lining 8 is formed to have an inclined surface on the inside so as to protrude toward the center of the ladle, as shown in FIG.
Therefore, the thickness of the side wall lining is increased by the amount that protrudes inward, and the lining is constructed so as to cover the end 7' of the lining by at least 80 mm. It is preferable to construct the side wall lining 8 using monolithic refractories by placing a formwork (core) corresponding to the thickness and shape of the side wall lining on the lining 7 and pouring it. Examples of construction methods include troweling, gun spraying, etc. Since the construction method of the present invention has the above-described configuration, the path for the molten steel and molten slag in the container to reach the permanent side wall tension is not a flat surface, but is complicatedly bent and has a long distance, so that infiltration is prevented. Furthermore, the lower part of the side wall lining, which is most susceptible to melting damage, is formed thickly so that it protrudes into the container, and at the same time protects the edges of the lining. It is possible to completely prevent the lower part from becoming empty. Another advantage is that the side wall lining and the protection of the lower part of the side wall lining can be constructed simultaneously using one set of formwork. Table 1 shown below shows examples of the side wall lining construction method of the present invention in an actual ladle, and Table 2 shows examples of the construction method shown in Table 1 and the conventional construction method shown in FIG. This is a comparison table of hotpot results.
【表】
注：本発明施工は流し込み法による。
[Table] Note: The construction of the present invention is performed using the pouring method.
【表】【table】
【表】
よる
上記第２表から明らかなように本発明の側壁内
張り施工方法は、従来のスリンガ−施工によるも
のに比べて施工に要した工数は約60％と少く、側
壁保護壁の耐用命数は４倍に延長されたことによ
つて側壁ライニングの寿命が20％延長できた。ま
た鍋使用中の側壁下部に対する熱間吹付補修材の
使用量や側壁下部への地金差込み防止においても
極めて優れていることがわかる。
なお本発明の側壁内張りの施工方法は取鍋のみ
ならず溶融金属容器の何れの側壁および敷に対し
ても適用することができる。[Table] As is clear from Table 2 above, the side wall lining construction method of the present invention requires approximately 60% fewer man-hours than the conventional slinger construction method, and the service life of the side wall protection wall The life span of the sidewall lining was extended by 20% by extending it four times. It can also be seen that the hot-sprayed repair material used for the lower part of the side wall during use of the pot and the prevention of metal insertion into the lower part of the side wall are extremely excellent. The method for constructing a side wall lining according to the present invention can be applied not only to a ladle but also to any side wall or lining of a molten metal container.
第１図は従来の側壁施工を示す縦断側面説明
図、第２図は第１図の使用后の溶損状態を示す縦
断側面説明図、第３図は本発明の施工方法の実施
例を示す縦断側面説明図である。
１……側壁永久張り、６……敷永久張り煉瓦、
７……敷内張り煉瓦、７′……敷内張り端部、８
……側壁内張り。
Fig. 1 is a longitudinal side explanatory view showing conventional side wall construction, Fig. 2 is a longitudinal side explanatory view showing the melted state after use as shown in Fig. 1, and Fig. 3 is an example of the construction method of the present invention. It is a longitudinal side explanatory view. 1... Side wall permanent tension, 6... Permanent flooring brick,
7...Sill lining brick, 7'...Sill lining end, 8
...Side wall lining.
Claims (1)
造し、次いで側壁内張りの下部が前記間隙部と前
記敷内張りの端部を覆いかつ容器の中心方向へ突
出する如く形枠による流し込みによつて不定形耐
火物で側壁内張りを施工することを特徴とする溶
融金属容器の側壁内張り施工方法。1. Construct a liner with a permanent sidewall liner and a gap, and then pour it into a form so that the lower part of the sidewall liner covers the gap and the end of the liner and protrudes toward the center of the container. A method for lining a side wall of a molten metal container, the method comprising lining the side wall with a monolithic refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7131981A JPS57187166A (en) | 1981-05-14 | 1981-05-14 | Applicating method for side wall lining of molten metal vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7131981A JPS57187166A (en) | 1981-05-14 | 1981-05-14 | Applicating method for side wall lining of molten metal vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57187166A JPS57187166A (en) | 1982-11-17 |
| JPS6154509B2 true JPS6154509B2 (en) | 1986-11-22 |
Family
ID=13457134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7131981A Granted JPS57187166A (en) | 1981-05-14 | 1981-05-14 | Applicating method for side wall lining of molten metal vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57187166A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59166945A (en) * | 1982-10-25 | 1984-09-20 | Nippon Kankoushi Kogyo Kk | Water-developable photosensitive sheet having high light shielding property |
| CN103691925B (en) * | 2013-12-27 | 2015-09-30 | 广西铁合金有限责任公司 | A kind of low Carbon Manganese silicon alloy decarburization ladle that integrally declines |
-
1981
- 1981-05-14 JP JP7131981A patent/JPS57187166A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57187166A (en) | 1982-11-17 |
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