JPS6233007B2 - - Google Patents
Info
- Publication number
- JPS6233007B2 JPS6233007B2 JP4046680A JP4046680A JPS6233007B2 JP S6233007 B2 JPS6233007 B2 JP S6233007B2 JP 4046680 A JP4046680 A JP 4046680A JP 4046680 A JP4046680 A JP 4046680A JP S6233007 B2 JPS6233007 B2 JP S6233007B2
- Authority
- JP
- Japan
- Prior art keywords
- centrifugal force
- steel plate
- force projection
- projection device
- scale
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 50
- 239000010959 steel Substances 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 18
- 239000003082 abrasive agent Substances 0.000 claims description 13
- 238000005554 pickling Methods 0.000 description 3
- 230000002028 premature Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B21B45/06—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 of strip material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【発明の詳細な説明】
本発明は熱間圧延鋼板の脱スケール方法の改良
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a method for descaling hot rolled steel sheets.
熱間圧延された鋼板の表面にはスケールが付着
しており、その後の令間圧延工程で表面のきれい
な鋼板を得るためには、このスケールを除去する
必要がある。この脱スケールには通常、酸を用い
た化学的な酸洗法が使用されているが、酸洗法
は、（）設備を長大にする。（）公害問題から
廃酸処理設備を必要とする。という欠点があり、
酸を使用しない脱スケール方法の開発が望まれて
いる。酸洗法以外の脱スケール方法として広く知
られているものに、砥粒、グリツド、シヨツト、
砂鉄等の研掃材を投射する噴射加工法がある。こ
の方法では、研掃材の加速に空気、水、或は遠心
力を利用する。このうち、遠心力を用いる場合が
エネルギー効率（脱スケールに用いるエネルギ
ー／装置が消費する全エネルギー）が最も高い。
第１図はこの方法を使用して線材ａの脱スケール
を行う従来例で、ｂ，ｃがガイドローラ、d1〜ｄ
oが同ガイドローラｂ，ｃ間の片側に一列に配設
した複数の遠心力投射装置、e1〜ｅoが上記ガイ
ドローラｂ，ｃ間の残る片側に一列に配設した複
数の遠心力投射装置で、線材ａをガイドローラ
ｂ，ｃにより遠心力投射装置d1〜ｄo及びe1〜ｅo
の間に送る一方、遠心力投射装置d1〜ｄo及びe1
〜ｅoの回転によつて生ずる遠心力により研掃材
ｆを線材ａへ投射して、脱スケールを行うように
なつている。 Scale is attached to the surface of a hot-rolled steel plate, and it is necessary to remove this scale in order to obtain a steel plate with a clean surface in the subsequent rolling process. A chemical pickling method using an acid is usually used for this descaling, but the pickling method (2) requires long equipment. () Waste acid treatment equipment is required due to pollution problems. There is a drawback that
It is desired to develop a descaling method that does not use acids. Widely known descaling methods other than pickling include abrasive grains, grits, shot,
There is an injection processing method that projects an abrasive material such as iron sand. This method uses air, water, or centrifugal force to accelerate the abrasive material. Among these, the use of centrifugal force has the highest energy efficiency (energy used for descaling/total energy consumed by the device).
Figure 1 shows a conventional example of descaling wire rod a using this method, b and c are guide rollers, and d 1 to d
o denotes a plurality of centrifugal force projection devices arranged in a line on one side between the guide rollers b and c, and e 1 to e o denote a plurality of centrifugal force projection devices arranged in a line on the remaining side between the guide rollers b and c. In the projection device, the wire a is passed through centrifugal force projection devices d 1 to d o and e 1 to e o by guide rollers b and c.
while centrifugal force projection devices d 1 to d o and e 1
The descaling is performed by projecting the abrasive material f onto the wire a by the centrifugal force generated by the rotation of ~ eo .
前記の脱スケール方法をそのまま使用して鋼板
表面上のスケールを除去する場合には、遠心力投
射装置の数をさらにふやさなければならなくて、
設備費をかさませる。またこれらの遠心力投射装
置を横一列、或は縦一列に配設しなければならな
くて、設備を長大化させる。また鋼板表面には、
脱スケールされ易いスケールと脱スケールされに
くいスケールとがあり、もし投射条件（（）遠
心力投射装置の回転数、（）遠心力投射装置か
ら鋼板までの投射距離）のいづれかまたは双方を
脱スケールされにくいスケールに合せて設定して
おくと、脱スケールされ易いスケール部分では地
金までが削られてしまうので、これを避けるため
に、遠心力投射装置の回転数及び遠心力投射装置
の位置を可変にしなければならなくて、この点か
らも設備費をかさませる。また前記第１図の遠心
力投射装置は、研掃材ｆを一方向にのみ投射する
ものであり、回転中にアンバランスを生じて、遠
心力投射装置を早期に摩耗させるという問題があ
つた。 If the scale on the surface of the steel plate is removed using the above-mentioned descaling method, the number of centrifugal force projection devices must be further increased.
Increase equipment costs. Furthermore, these centrifugal force projection devices must be arranged in a horizontal or vertical row, which increases the length of the equipment. In addition, on the surface of the steel plate,
There are scales that are easily descaled and scales that are difficult to descale. If the scale is set to match the scale that is difficult to scale, even the bare metal will be scraped off in the scale parts that are easy to descale, so to avoid this, the rotation speed of the centrifugal force projection device and the position of the centrifugal force projection device should be varied. This also increases equipment costs. Further, the centrifugal force projection device shown in Fig. 1 projects the abrasive material f only in one direction, and there is a problem that imbalance occurs during rotation, causing premature wear of the centrifugal force projection device. .
本発明は前記の問題点に対処するもので、熱間
圧延鋼板を相対する一方の遠心力投射装置と他方
の遠心力投射装置との相対する正面部間に通し、
次いで反転させて一方の遠心力投射装置の背面部
側に通し、次いで再度反転させて他方の遠心力投
射装置の背面部側に通すとともに上記各遠心力投
射装置の正、背面部から上記鋼板へ研掃材を投射
して、鋼板表面に付着しているスケールを除去す
ることを特徴とした熱間圧延鋼板の脱スケール方
法に係り、その目的とする処は、遠心力投射装置
を使用して鋼板の脱スケールを行う場合に設備費
をかさませないし、設備を長大化させない。また
遠心力投射装置の早期の摩耗を防止できる改良さ
れた熱間圧延鋼板の脱スケール方法を供する点に
ある。 The present invention addresses the above-mentioned problems by passing a hot-rolled steel plate between the opposing front surfaces of one opposing centrifugal force projection device and the other centrifugal force projection device,
Next, it is reversed and passed through the back side of one centrifugal force projection device, then reversed again and passed through the back side of the other centrifugal force projection device, and from the front and back side of each centrifugal force projection device to the above steel plate. A method for descaling a hot rolled steel plate, which is characterized by removing scale attached to the surface of a steel plate by projecting an abrasive, and the purpose thereof is to use a centrifugal force projecting device. When descaling steel plates, the equipment cost does not increase and the equipment does not become too long. Another object of the present invention is to provide an improved method for descaling hot rolled steel sheets that can prevent premature wear of a centrifugal force projection device.
本発明の熱間圧延鋼板の脱スケール方法は前記
のように熱間圧延鋼板を相対する一方の遠心力投
射装置と他方の遠心力投射装置との相対する正面
部間に通し、次いで反転させて一方の遠心力投射
装置の背面部側に通し、次いで再度反転させて他
方の遠心力投射装置の背面部側に通すとともに上
記各遠心力投射装置の正、背面部から上記鋼板へ
研掃材を投射して、鋼板表面に付着しているスケ
ールを除去するので、遠心力投射装置の数を一方
向にしか投射させない場合に比べると半減でき
る。また本発明の脱スケール方法は前記のように
構成されており、一方及び他方の遠心力投射装置
の正面部では、投射条件を脱スケールされ易いス
ケールに合せるように、また一方及び他方の遠心
力投射装置の背面部側では、鋼板位置調整ロール
の位置を変えて鋼板を遠心力投射装置から遠ざけ
ることにより脱スケールされ易いスケールに合せ
るか、鋼板位置調整ローラの位置を変えて鋼板を
遠心力投射装置に近づけることにより脱スケール
されにくいスケールに合せるようにすることが可
能で、遠心力投射装置の回転数及び遠心力投射装
置の位置を可変にする必要がない。従つて設備費
をかさませないものである。 As described above, the method for descaling a hot rolled steel plate of the present invention involves passing the hot rolled steel plate between the opposing front parts of one centrifugal force projection device and the other centrifugal force projection device, and then inverting the hot rolled steel plate. Pass the abrasive material through the back side of one centrifugal force projection device, then turn it around again and pass it through the back side of the other centrifugal force projection device, and apply the abrasive material from the front and back side of each centrifugal force projection device to the steel plate. Since the scale adhering to the surface of the steel plate is removed by projecting, the number of centrifugal force projecting devices can be halved compared to when projecting in only one direction. Further, the descaling method of the present invention is configured as described above, and the front portions of the one and the other centrifugal force projection devices are arranged so that the projection conditions are matched to the scale that is easily descaled, and the centrifugal force of the one and the other On the rear side of the projection device, either change the position of the steel plate position adjustment roller to move the steel plate away from the centrifugal force projection device to match the scale that is easy to descale, or change the position of the steel plate position adjustment roller to move the steel plate away from the centrifugal force projection device. By bringing it close to the device, it is possible to match the scale that is difficult to descale, and there is no need to vary the rotation speed of the centrifugal force projection device and the position of the centrifugal force projection device. Therefore, equipment costs are not increased.
また本発明の熱間圧延鋼板の脱スケール方法で
は、前記のように遠心力投射装置の数を一方向に
しか投射させない場合に比べると半減できるの
で、設備を長大化させないものである。 Furthermore, in the method for descaling hot-rolled steel sheets of the present invention, the number of centrifugal force projection devices can be halved compared to the case of projecting in only one direction, as described above, so that the equipment does not become too long.
また本発明の熱間圧延鋼板の脱スケール方法で
は、各遠心力投射装置が相反する２方向へ研掃材
を投射するので、回転中にアンバランスを生じる
ことがなくて、遠心力投射装置の早期の摩耗を防
止できるものである。 In addition, in the method for descaling hot-rolled steel plates of the present invention, each centrifugal force projection device projects the abrasive material in two opposite directions, so there is no imbalance during rotation, and the centrifugal force projection device This can prevent premature wear.
次に本発明の熱間圧延鋼板の脱スケール方法を
第２，３図に示す一実施例により説明すると、
１，２，５，９，１０がガイドローラ、３，４及
び７，８が鋼板位置調整ローラ、６がテンシヨン
ローラ、１１ａ〜１１ｎがガイドローラ１，２間
の片側に横一列に配設した複数の遠心力投射装
置、１２ａ〜１２ｎがガイドローラ１，２間の残
る片側に横一列に配設した複数の遠心力投射装置
で、同各遠心力投射装置１１ａ〜１１ｎ及び１２
ａ〜１２ｎは、互に対向した正面部と反対の方向
を向いた背面部とから相反する２方向へ研掃材を
投射するようになつている。また第３図に示すよ
うに鋼板位置調整ローラ３，４は、遠心力投射装
置１１ａ〜１１ｂに対して接近または離隔できる
ように移動可能に装着されている。この点は鋼板
位置調整ローラ７，８も同様である。またテンシ
ヨンローラ６は水平方向に移動可能に装着されて
いる。 Next, the method for descaling hot rolled steel sheets of the present invention will be explained with reference to an example shown in FIGS. 2 and 3.
1, 2, 5, 9, and 10 are guide rollers, 3, 4, 7, and 8 are steel plate position adjustment rollers, 6 is a tension roller, and 11a to 11n are arranged in a horizontal line on one side between guide rollers 1 and 2. A plurality of centrifugal force projection devices 12a to 12n are arranged horizontally in a row on the remaining side between the guide rollers 1 and 2, and each of the centrifugal force projection devices 11a to 11n and 12
The a to 12n are configured to project the abrasive material in two opposite directions from the front face facing each other and the back face facing in the opposite direction. Further, as shown in FIG. 3, the steel plate position adjusting rollers 3 and 4 are movably mounted so that they can approach or separate from the centrifugal force projection devices 11a to 11b. This also applies to the steel plate position adjustment rollers 7 and 8. Further, the tension roller 6 is mounted so as to be movable in the horizontal direction.
次に前記脱スケール装置の作用を説明する。熱
間圧延鋼板Ａは、ガイドローラ１を経て遠心力投
射装置１１ａ〜１１ｎ及び１２ａ〜１２ｎの相対
する正面側の間に送られる。このときにはこれら
遠心力投射装置１１ａ〜１１ｎ及び１２ａ〜１２
ｎの正面部から投射される研掃材によつて鋼帯Ａ
の両面に付着しているスケールが除去され。。な
お、この領域では、脱スケールされ易いスケール
の大部分が除去され、脱スケールされにくいスケ
ールの多くが残留するように投射条件が設定され
ている。次いで鋼板Ａは、ローラ２，３を経て遠
心力投射装置１１ａ〜１１ｎの背後に送られる。
このときには、遠心力投射装置１１ａ〜１１ｎの
背面部から投射される研掃材によつて鋼帯Ａの片
面に残留しているスケールが除去される。なおこ
の領域では、鋼帯Ａの片面上に脱スケールされ易
いスケールが少ししか残留していない場合には、
鋼板位置調整ローラ３，４を遠心力投射装置１１
ａ〜１１ｎから遠ざけて、スケールを除去する一
方、地金を削らないように、それとは逆に鋼帯Ａ
の片面上に脱スケールされにくいスケールが多く
残留している場合には、鋼板位置調整ローラ３，
４を遠心力投射装置１１ａ〜１１ｎに近づけて、
脱スケールされにくいスケールを除去するように
する。次いで鋼板Ａは、ローラ４〜７を経て遠心
力投射装置１２ａ〜１２ｎの背後に送られる。こ
のときには遠心力投射装置１２ａ〜１２ｎの背面
部から投射される研掃材によつて鋼帯Ａの残る片
面に残留しているスケールが除去される。なおこ
の領域では、鋼帯Ａの残る片面上に脱スケールさ
れ易いスケールが少ししか残留していない場合に
は、鋼板位置調整ローラ７，８を遠心力投射装置
１２ａ〜１２ｎから遠ざけて、スケールを除去す
る一方、地金を削らないように、とは逆に鋼帯Ａ
の残る片面上に脱スケールされにくいスケールが
多く残留している場合には、鋼板位置調整ローラ
７，８を遠心力投射装置１２ａ〜１２ｎに近づけ
て、脱スケールされにくいスケールを除去するよ
うにする。次いで鋼板Ａは、ガイドローラ９，１
０を経て次工程に送られる。 Next, the operation of the descaling device will be explained. The hot rolled steel plate A is sent through the guide roller 1 between the opposing front sides of the centrifugal force projection devices 11a to 11n and 12a to 12n. At this time, these centrifugal force projection devices 11a to 11n and 12a to 12
Steel strip A is struck by the abrasive material projected from the front part of
The scale adhering to both sides is removed. . Note that in this region, the projection conditions are set so that most of the scales that are easily descaled are removed, and most of the scales that are difficult to be descaled remain. Next, the steel plate A is sent behind the centrifugal force projection devices 11a to 11n via rollers 2 and 3.
At this time, the scale remaining on one side of the steel strip A is removed by the abrasive material projected from the back side of the centrifugal force projection devices 11a to 11n. In this region, if only a small amount of scale that is easily descaled remains on one side of steel strip A,
The steel plate position adjustment rollers 3 and 4 are connected to the centrifugal force projection device 11.
A to 11n away from the steel strip A to remove scale and avoid scraping the base metal.
If a large amount of scale that is difficult to descale remains on one side of the steel plate position adjustment roller 3,
4 close to the centrifugal force projection devices 11a to 11n,
Try to remove scale that is difficult to descale. The steel plate A is then sent behind the centrifugal force projection devices 12a-12n via rollers 4-7. At this time, the scale remaining on one side of the steel strip A is removed by the abrasive material projected from the back side of the centrifugal force projection devices 12a to 12n. In this area, if only a small amount of scale that is easily descaled remains on one side of the steel strip A, the steel plate position adjustment rollers 7 and 8 are moved away from the centrifugal force projection devices 12a to 12n to remove the scale. On the contrary, the steel strip A
If there is a large amount of scale that is difficult to descale remaining on the remaining side, move the steel plate position adjustment rollers 7 and 8 closer to the centrifugal force projection devices 12a to 12n to remove the scale that is difficult to descale. . Next, the steel plate A is moved to the guide rollers 9 and 1.
0 and then sent to the next process.
なお第４図は、鋼板位置調整ローラ３，４（及
び７，８のうち、３（及び７）を移動不可能にし
て、つまり４（及び８）のみを移動可能にして、
前記と同様の作用を行わせるようにした他の実施
例で、この場合には可動ロールの数を半減できる
利点がある。 In addition, in FIG. 4, among the steel plate position adjustment rollers 3, 4 (and 7, 8), 3 (and 7) is made immovable, that is, only 4 (and 8) is made movable,
This is another embodiment in which the same effect as described above is performed, and in this case there is an advantage that the number of movable rolls can be halved.
以上本発明を実施例について説明したが、勿論
本発明はこのような実施例にだけ局限されるもの
ではなく、本発明の精神を逸脱しない範囲内で
種々の設計の改変を施しうるものである。 Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .
第１図は従来の線材用脱スケール装置を示す側
面図、第２図は本発明に係る熱間圧延鋼板の脱ス
ケール方法の一実施例を示す側面図、第３図は鋼
板位置調整ローラの作用説明図、第４図は同鋼板
位置調整ローラの他の例の作用説明図である。
１１ａ〜１１ｎ……一方の遠心力投射装置、１
２ａ〜１２ｎ……他方の遠心力投射装置、Ａ……
鋼板。
Fig. 1 is a side view showing a conventional wire rod descaling device, Fig. 2 is a side view showing an embodiment of the hot rolled steel plate descaling method according to the present invention, and Fig. 3 is a side view showing a steel plate position adjustment roller. FIG. 4 is an explanatory diagram of another example of the same steel plate position adjustment roller. 11a to 11n...One centrifugal force projection device, 1
2a to 12n...the other centrifugal force projection device, A...
steel plate.
Claims (1)
置と他方の遠心力投射装置との相対する正面部間
に通し、次いで反転させて一方の遠心力投射装置
背面部側に通し、次いで再度反転させて他方の遠
心力投射装置の背面部側に通すとともに上記各遠
心力投射装置の正面部及び背面部から上記鋼板へ
研掃材を投射して、鋼板表面に付着しているスケ
ールを除去することを特徴とした熱間圧延鋼板の
脱スケール方法。1 Pass the hot rolled steel plate between the opposing front parts of one centrifugal force projection device and the other centrifugal force projection device, then turn it around and pass it through the back side of one centrifugal force projection device, and then turn it around again. The abrasive material is passed through the back side of the other centrifugal force projection device, and the abrasive material is projected onto the steel plate from the front and back sides of each of the centrifugal force projection devices to remove scale attached to the surface of the steel plate. A method for descaling hot rolled steel sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4046680A JPS56139215A (en) | 1980-03-31 | 1980-03-31 | Descaling method for hot rolled steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4046680A JPS56139215A (en) | 1980-03-31 | 1980-03-31 | Descaling method for hot rolled steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56139215A JPS56139215A (en) | 1981-10-30 |
| JPS6233007B2 true JPS6233007B2 (en) | 1987-07-17 |
Family
ID=12581404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4046680A Granted JPS56139215A (en) | 1980-03-31 | 1980-03-31 | Descaling method for hot rolled steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56139215A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145672A (en) * | 2021-05-17 | 2021-07-23 | 山东绿钢环保科技股份有限公司 | Efficient descaling system for steel strip |
-
1980
- 1980-03-31 JP JP4046680A patent/JPS56139215A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56139215A (en) | 1981-10-30 |
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