JPS63238919A - Descaling method for thin cast billet - Google Patents
Descaling method for thin cast billetInfo
- Publication number
- JPS63238919A JPS63238919A JP7274587A JP7274587A JPS63238919A JP S63238919 A JPS63238919 A JP S63238919A JP 7274587 A JP7274587 A JP 7274587A JP 7274587 A JP7274587 A JP 7274587A JP S63238919 A JPS63238919 A JP S63238919A
- Authority
- JP
- Japan
- Prior art keywords
- thin
- scale
- descaling
- slab
- thin slab
- 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
- 238000000034 method Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000005266 casting Methods 0.000 claims abstract description 29
- 238000005096 rolling process Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 239000010953 base metal Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000004576 sand Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 241000221535 Pucciniales Species 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices 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 de-scaling, e.g. by brushing
- B21B45/08—Devices 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 de-scaling, e.g. by brushing hydraulically
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、鋳込時に生成した薄鋳片のスケールを圧延前
に除去する薄鋳片のスケール除去方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for removing scale from a thin cast slab, which removes scale from a thin cast slab generated during casting before rolling.
熱間圧延用の鋳片は従来より高揚程連続鋳造機により鋳
込まわれているが、その鋳片の厚みが２００〜３３０
ｍｍと厚く、一旦粗圧延機により２５〜６０鶴に落した
後、仕上圧延機により、所望の厚みに仕上げている。最
近では低揚程薄鋳片鋳造機が開発され、薄い鋳片も鋳込
まれるようになってきている。この鋳造機においては薄
鋳片が３０〜６０鶴と薄く粗圧延を省略して直接仕上圧
延することができる。そこで、低揚程薄鋳片鋳造機は省
設備、省エネと時代に合致したところから有望視され、
実用化が急がれている。Slabs for hot rolling have conventionally been cast using high-head continuous casting machines, but the thickness of the slabs is 200 to 330 mm.
It is as thick as 25 to 60 mm, and is first reduced to a thickness of 25 to 60 mm using a rough rolling mill, and then finished to the desired thickness using a finishing mill. Recently, low-lift thin slab casting machines have been developed, and thin slabs are now being cast. In this casting machine, the thin slab can be made as thin as 30 to 60 mm, and rough rolling can be omitted and finish rolling can be directly performed. Therefore, low lifting head thin slab casting machines are seen as promising because they are equipment-saving, energy-saving, and are in line with the times.
There is an urgent need to put this into practical use.
鋳片、薄鋳片、いずれにしても圧延機にかける前にデス
ケリングすることが必要であり、鋳片においては従来よ
りバーチカルスケールブレーカ−を用いてスケールを浮
き上がらせ、高圧デスケール水により除去している。し
かし、薄鋳片は鋳片に比べてかなり薄く、従来使用して
いたバーチカルスケールブレーカ−を用いてスケールを
除去することができない。そこで、仕上圧延機入側にお
いて高圧デスケール水を噴射し、スケールを除去するこ
とが行なわれている。Regardless of whether it is a slab or a thin slab, it is necessary to descale it before applying it to a rolling mill.For slabs, scale is conventionally lifted using a vertical scale breaker and removed using high-pressure descaling water. There is. However, thin slabs are considerably thinner than cast slabs, and scale cannot be removed using the conventional vertical scale breaker. Therefore, high-pressure descaling water is injected on the entry side of the finishing mill to remove scale.
また、鋳込後の薄鋳片を一層コイラーに巻取り、保温炉
又は加熱炉で保持し、圧延タイミングを図ってアンコイ
ラ−することも行なわれている。Furthermore, the thin slab after casting is wound around a coiler, held in a heat insulating furnace or heating furnace, and uncoiled at the timing of rolling.
一般に、鋳込後の赤熱薄鋳片に高圧デスケール水を噴射
すると、表面が一時的に冷え、内部との熱収縮差により
スケールに引張応力が生じる。この引張応力が破断応力
に達するようになればスケールに亀裂が生じ、その亀裂
に侵入した高圧デスケール水のエネルギでスケールが剥
離する。しかし、鋳込後に生成する多くのスケールは地
金に強固に密着し、単に高圧デスケール水を噴射したの
みでは容易に除去できない。その結果、バチカルスケー
ルブレーカ−を使用できない薄鋳片は従来の鋳片と比べ
るとスケール押込疵が多く、品質面において解決しなけ
ればならない問題を抱えている。Generally, when high-pressure descaling water is injected onto a red-hot thin slab after casting, the surface temporarily cools down and tensile stress is generated in the scale due to the difference in thermal contraction with the inside. When this tensile stress reaches a breaking stress, cracks occur in the scale, and the energy of the high-pressure descaling water that has entered the cracks causes the scale to peel off. However, many of the scales generated after casting adhere firmly to the base metal and cannot be easily removed by simply spraying high-pressure descaling water. As a result, thin slabs that cannot be used with vertical scale breakers have more scale intrusion defects than conventional slabs, and have problems that must be solved in terms of quality.
そこで、本発明の目的は、上記問題点を解決する薄鋳片
のスケール除去方法を提供することにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a method for removing scale from thin slabs that solves the above-mentioned problems.
上記目的を達成するため、第１発明は、薄鋳片鋳込後の
比較的速度の遅い時に、スケール除去剤を添加した高圧
デスケール水を薄鋳片に噴射し、厚く地金に付着したス
ケールを除去し、次いで加熱装置により加熱した後、圧
延機入側にて高圧水を噴射し、薄鋳片に生成した薄いス
ケールを除去することを特徴とする。In order to achieve the above object, the first invention aims at spraying high-pressure descaling water added with a scale remover onto the thin slab at a relatively low speed after casting the thin slab, thereby reducing the scale that thickly adheres to the bare metal. is removed, then heated by a heating device, and then high-pressure water is injected on the inlet side of the rolling mill to remove the thin scale formed on the thin slab.
第２発明は、薄鋳片鋳込後の比較的速度の遅い時に、ス
ケール除去剤を添加した高圧デスケール水を薄鋳片に噴
射し、厚く地金に付着したスケールを除去し、次いで薄
鋳片をコイラーにて巻取り、一旦他の薄鋳片鋳造機より
鋳込まれた同様な巻取り鋳片と共に還元性雰囲気の保温
炉又は加熱炉に保持した後、圧延タイミングを調整して
抽出し、仕上圧延機入側にて高圧水を噴射し、薄鋳片に
生成した薄いスケールを除去することを特徴とする。The second invention is to inject high-pressure descaling water containing a scale remover into the thin slab at a relatively low speed after casting the thin slab to remove thick scale adhered to the base metal, and then cast the thin slab. The piece is wound up in a coiler, and once held in a heat insulating furnace or heating furnace in a reducing atmosphere together with similar rolled slabs cast from other thin slab casting machines, the rolling timing is adjusted and extracted. , is characterized in that high-pressure water is injected at the inlet side of the finishing mill to remove thin scale formed on the thin slab.
高圧デスケール水の噴射により赤熱薄鋳片に熱収縮差が
起こり、スケールに亀裂が入るが、本発明においては、
更に水よりも質量の大きい例えば砂鉄、サンド、スチー
ルショット等といったスケール除去剤を高圧デスケール
水とともに噴射し、スケール表面をたたく。この作用に
よって地金に強固に密着するスケールが浮き上がり、亀
裂より侵入する高圧デスケール水のエネルギによりスケ
ールが剥離する。この除去作業は圧延速度に比べ、鋳込
後の比較的速度の遅い時に行なわれるから、冷却効果も
著しく、スケールに一層の亀裂を生じさせる。The jetting of high-pressure descaling water causes a difference in heat shrinkage in the red-hot thin slab, causing cracks in the scale, but in the present invention,
Furthermore, a scale remover such as iron sand, sand, steel shot, etc. having a mass larger than water is injected together with high-pressure descaling water to strike the scale surface. This action lifts the scale that adheres firmly to the base metal, and the energy of the high-pressure descaling water that enters through the cracks causes the scale to peel off. Since this removal operation is carried out at a relatively low speed after casting compared to the rolling speed, the cooling effect is significant, causing further cracks in the scale.
以下、図面を参照して実施例を説明する。 Examples will be described below with reference to the drawings.
第１図は、第１発明に使用される設備の概略を示したも
ので、図中、１は低揚程薄鋳片鋳造機であり、幅７００
〜１６００１ｍ、厚み３０〜６０鶴の薄鋳片２を１〜１
０ｍ／ｍｉｎの速度で鋳込む能力を ゛もっている。Fig. 1 shows an outline of the equipment used in the first invention, and in the figure, 1 is a low lift thin slab casting machine, with a width of 700 mm.
~16001m, 1 to 1 thin cast slab 2 with a thickness of 30 to 60 mm
It has the ability to cast at a speed of 0m/min.
この鋳造機１で鋳込まれた薄鋳片２はライン右方の方に
流れ、途中ガストーチのような切断機３により一定の長
さに切断される。−鋳込後は薄鋳片２が空気に晒され、
ウスタイトを主成分とした一層スケールが生成する。従
来においては仕上製圧延機４の入側に第１噴射装置５を
設置し、高圧デスケール水を噴射して除去していたが、
−次スケールと地金との結び付きが強（完全除去するに
はいたっていない。このため従来の厚鋳片に比べ、スケ
ール残りが多く、品質面で劣る結果となっていた。The thin slab 2 cast by the casting machine 1 flows to the right of the line and is cut into a certain length by a cutting machine 3 such as a gas torch along the way. - After casting, the thin slab 2 is exposed to air,
A further scale containing wustite as the main component is generated. Conventionally, a first injection device 5 was installed on the entry side of the finishing rolling mill 4, and high-pressure descaling water was injected and removed.
- The bond between the scale and the base metal is strong (it has not been completely removed. Therefore, compared to conventional thick slabs, there was more scale remaining, resulting in inferior quality.
本発明においては、上記−次スケールを除去するため、
鋳込後薄鋳片２が比較的低速で移動する位置に第２噴射
装置６を設け、スケール除去剤を添加した高圧デスケー
ル水を噴射する。スケール除去剤は噴射時のエネルギを
蓄えてスケールに衝撃力を与えるものであるから、水の
質量よりも重い固体物質から成ることが望ましく、これ
に適した物質としては砂鉄、サンド、スチールショット
といったものがある。また噴射するデスケール水の水圧
は鋳込速度によっても異なるが、スケール除去剤との相
乗効果も期待できるので、１５０〜５００ｋｇｆ／ｃｆ
ｆｌ程度あれば十分である。In the present invention, in order to remove the above-mentioned -order scale,
A second injection device 6 is provided at a position where the thin slab 2 moves at a relatively low speed after casting, and injects high-pressure descaling water to which a descaling agent has been added. Since the scale remover stores energy during injection and applies an impact force to the scale, it is desirable to be made of a solid substance that is heavier than the mass of water. Suitable materials include iron sand, sand, and steel shot. There is something. In addition, the water pressure of the descaling water to be injected varies depending on the casting speed, but it can be expected to have a synergistic effect with the scale remover, so it is 150 to 500 kgf/cf.
Approximately fl is sufficient.
上記スケール除去剤を添加した高圧デスケール水を第２
噴射装置６より噴射すると、まず冷却効果によりスケー
ルに亀裂が生じ、続いてスケール除去剤との衝突によっ
て強固に密着するスケールが浮き上がる。スケールの亀
裂にはデスケール水が侵入し、瞬間的に薄光するからデ
スケール水の噴射エネルギと蒸気圧により、浮き上がっ
たスケールが剥離する。したがって単に高圧デスケール
水を噴射するよりはスケール除去剤との協調作用によっ
て強固に密着するスケールを完全に除去することができ
る。The high-pressure descaling water added with the above scale remover was added to the second
When injected from the injector 6, cracks first occur in the scale due to the cooling effect, and then the tightly adhered scale is lifted by collision with the scale remover. Descaling water enters the cracks in the scale, causing a momentary glow, and the floating scale peels off due to the injection energy and steam pressure of the descaling water. Therefore, rather than simply injecting high-pressure descaling water, tightly adhered scale can be completely removed by the cooperative action with the scale remover.
一次スケールの除去に伴ない、薄鋳片２の表面温度が低
下するが、その低下分は次の加熱装置７、例えばインダ
クションヒーターにより補償される。As the primary scale is removed, the surface temperature of the thin slab 2 decreases, but this decrease is compensated for by the next heating device 7, such as an induction heater.
次いで、薄鋳片２は仕上圧延機４にかけられるが、−次
スケール除去から仕上圧延機４までの移送中や加熱時に
薄い二次スケールが発生する。この二次スケールを除去
するため、前述の第１噴射装置５より高圧デスケール水
が噴射される。仕上圧延機４の入側速度は、鋳込速度よ
りも速い３０〜８０ｍ／ｎ＋ｉｎであるが、二次スケー
ルは一次スケールに比べて薄り、密着性も低いので、１
００〜３００ｋｇｆ／ｃｄの水圧があれば除去される。Next, the thin slab 2 is subjected to a finishing mill 4, but thin secondary scales are generated during the transfer from the removal of the secondary scale to the finishing mill 4 and during heating. In order to remove this secondary scale, high pressure descaling water is injected from the first injection device 5 described above. The entry speed of the finishing rolling mill 4 is 30 to 80 m/n+in, which is faster than the casting speed, but since the secondary scale is thinner and has lower adhesion than the primary scale,
It will be removed if there is a water pressure of 00 to 300 kgf/cd.
以下、具体的な数値で説明すると、鋳込速度１０ ｍ／
＋ｍｉｎ、仕上圧延機の入側速度６０ｍ／ｍｉｎのとき
に、第２噴射装置より水圧２００ｋｇｆ／ｃｒＡの高圧
デスケール水を噴射し、砂鉄３ｋｇ／ｍｉｎの割で添書
■したところ一次スケールが完全に除去された。また、
二次スケールの除去に対しては、水圧１５０ｋｇｆ／ｃ
ｄで十分な除去効果が得られた。To explain in concrete numbers below, the casting speed is 10 m/
+min, and when the entrance speed of the finishing rolling mill was 60 m/min, high-pressure descaling water with a water pressure of 200 kgf/crA was injected from the second injection device, and when an attached note was added at a rate of 3 kg/min of iron sand, the primary scale was completely removed. removed. Also,
For removing secondary scale, water pressure 150kgf/c
A sufficient removal effect was obtained with d.
第２図は第２発明に使用される設備の概略を示したもの
で、主要部は第１発明に使用される設備とほとんど変わ
らない。したがって同一部分は付号のみ示し、説明を省
略する。FIG. 2 shows an outline of the equipment used in the second invention, and the main parts are almost the same as the equipment used in the first invention. Therefore, the same parts are indicated only by the numerals, and the explanation is omitted.
通常、鋳込速度よりも圧延速度の方が速いので、仕上圧
延機４１基に対し、薄鋳片鋳造機ｌが複数基配置される
。これらの薄鋳片鋳造機１により鋳込まれた薄鋳片２は
切断機３により適当な長さに切断され、次いで第２噴射
装Ｗ６により一次スケールが除去される。しかし、仕上
圧延機４は１基でもあり、各薄鋳片鋳造機１より鋳込ま
れた薄鋳片２を圧延タイミングを調整して仕上圧延機４
に送る必要がある。したがってこのような設備において
は、薄鋳片２の温度低下を防ぎながら一時的に保管する
場所が必要となる。このため、第２発明においては一次
スケール除去後の薄鋳片２をコイラー２ａにて巻取り、
コイル状にして他の薄鋳片鋳造機により鋳込まれた同様
な巻取り鋳片と共に還元性雰囲気の保温炉又は加熱炉８
にて保持する。Since the rolling speed is usually faster than the casting speed, a plurality of thin slab casting machines 1 are arranged for each of the 41 finishing rolling mills. The thin slabs 2 cast by these thin slab casting machines 1 are cut into appropriate lengths by a cutting machine 3, and then primary scale is removed by a second injection device W6. However, there is at least one finishing rolling mill 4, and the thin slab 2 cast from each thin slab casting machine 1 is rolled into the finishing rolling mill 4 by adjusting the rolling timing.
need to be sent to. Therefore, in such equipment, a place is required to temporarily store the thin slab 2 while preventing the temperature from decreasing. For this reason, in the second invention, the thin slab 2 after primary scale removal is wound up by the coiler 2a,
An insulating furnace or heating furnace 8 in a reducing atmosphere together with a similar rolled slab that was coiled and cast by another slab casting machine.
It is held at
一次スケールを除去した薄鋳片２は一般に表面が活性化
し、錆易くなっているが、コイル状に巻取った部分は外
気との接触が断たれ、二次スケールの発生が少なくなる
。また、待機中において還元性雰囲気の中で保管される
ため、二次スケールの発生が抑制される。Generally, the surface of the thin cast slab 2 from which primary scale has been removed is activated and rusts easily, but the coiled portion is cut off from contact with the outside air, reducing the occurrence of secondary scale. Furthermore, since the product is stored in a reducing atmosphere during standby, the generation of secondary scale is suppressed.
アンコイラ−後は、仕上圧延機入側の第１噴射装置５よ
り高圧デスケール水が噴射され、二次スケールが除去さ
れる。After the uncoiler, high-pressure descaling water is injected from the first injection device 5 on the entry side of the finishing rolling machine to remove secondary scale.
以下、具体的な数値で説明すると、鋳込速度８ｍ／ｗｉ
ｎ、仕上圧延機の入側速度７０ｍ／翔ｉｎに対しては第
２噴射装置より水圧２５０ｋｇｆ／ｃｄで噴射し、砂鉄
３ｋｇ／ｌｌｌ１ｎの添加で、−次スケールの完全除去
がみられた。また二次スケールの除去は水圧１６０ｋｇ
ｆ／ａａで十分な効果が得られた。Below, to explain in concrete numbers, the casting speed is 8m/wi.
When the inlet speed of the finishing mill was 70 m/in, water was injected from the second injector at a water pressure of 250 kgf/cd, and with the addition of 3 kg/lll1n of iron sand, complete removal of the -order scale was observed. In addition, the removal of secondary scale requires a water pressure of 160 kg.
A sufficient effect was obtained at f/aa.
以上説明したように、本発明によれば、薄鋳片の移行速
度とスケール厚や性状に合致した高圧仕様の二段使用法
を採用することにより、強固なスケールの除去が可能と
なり、従来通りの良好な表面性状の薄鋼板を得ることが
できる。As explained above, according to the present invention, by adopting a two-stage usage method with high pressure specifications that match the transfer speed of the thin slab and the scale thickness and properties, it is possible to remove strong scale, and it is possible to remove the solid scale as usual. A thin steel sheet with good surface properties can be obtained.
第１図は第１発明に使用される設備の概略図、第２図は
第２発明に使用される設備の概略図である。
１・・・薄鋳片鋳造機、２・・・薄鋳片、２ａ・・・コ
イラー、３・・・切断機、４・・・仕上圧延機、５・・
・第１噴射装置、６・・・第２噴射装置、７・・・加熱
器、８・・・保温炉又は加熱炉。FIG. 1 is a schematic diagram of equipment used in the first invention, and FIG. 2 is a schematic diagram of equipment used in the second invention. 1... Thin slab casting machine, 2... Thin slab, 2a... Coiler, 3... Cutting machine, 4... Finishing rolling machine, 5...
- First injection device, 6... Second injection device, 7... Heater, 8... Heat retention furnace or heating furnace.
Claims (2)
除去剤を添加した高圧デスケール水を薄鋳片に噴射し、
厚く地金に付着したスケールを除去し、次いで加熱装置
により加熱した後、圧延機入側にて高圧水を噴射し、薄
鋳片に生成した薄いスケールを除去することを特徴とす
る薄鋳片のスケール除去方法。(1) After casting the thin slab, at a relatively slow speed, inject high-pressure descaling water containing a scale remover into the thin slab,
A thin cast slab characterized by removing thick scale attached to the bare metal, then heating it with a heating device, and then injecting high-pressure water at the inlet side of the rolling mill to remove the thin scale generated on the thin slab. descaling method.
除去剤を添加した高圧デスケール水を薄鋳片に噴射し、
厚く地金に付着したスケールを除去し、次いでその薄鋳
片をコイラーにて巻取り、一旦他の薄鋳片鋳造機より鋳
込まれた同様な巻取り鋳片と共に還元性雰囲気の保温炉
又は加熱炉に保持した後圧延タイミングを調整して抽出
し、仕上圧延機入側にて高圧水を噴射し、薄鋳片に生成
した薄いスケールを除去することを特徴とする薄鋳片の
スケール除去方法。(2) After casting the thin slab, at a relatively slow speed, inject high-pressure descaling water containing a scale remover into the thin slab;
After removing the thick scale attached to the base metal, the thin slab is then wound up in a coiler and placed in a heat insulating furnace in a reducing atmosphere or together with similar rolled slabs cast from other thin slab casting machines. Descaling of thin slabs, which is characterized by extracting the thin slabs by adjusting the rolling timing after holding them in a heating furnace, and injecting high-pressure water at the entry side of the finishing rolling mill to remove the thin scales generated on the thin slabs. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7274587A JPS63238919A (en) | 1987-03-26 | 1987-03-26 | Descaling method for thin cast billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7274587A JPS63238919A (en) | 1987-03-26 | 1987-03-26 | Descaling method for thin cast billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63238919A true JPS63238919A (en) | 1988-10-05 |
Family
ID=13498200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7274587A Pending JPS63238919A (en) | 1987-03-26 | 1987-03-26 | Descaling method for thin cast billet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63238919A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05228838A (en) * | 1992-02-24 | 1993-09-07 | Nippon Steel Corp | Band-shape metal body processing method |
-
1987
- 1987-03-26 JP JP7274587A patent/JPS63238919A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05228838A (en) * | 1992-02-24 | 1993-09-07 | Nippon Steel Corp | Band-shape metal body processing method |
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