JPH03234312A - Method for adjusting concentration of lubricant in cold rolling - Google Patents
Method for adjusting concentration of lubricant in cold rollingInfo
- Publication number
- JPH03234312A JPH03234312A JP2031112A JP3111290A JPH03234312A JP H03234312 A JPH03234312 A JP H03234312A JP 2031112 A JP2031112 A JP 2031112A JP 3111290 A JP3111290 A JP 3111290A JP H03234312 A JPH03234312 A JP H03234312A
- Authority
- JP
- Japan
- Prior art keywords
- concentration
- lubricant
- oil
- rolling
- dirty tank
- 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
- 239000000314 lubricant Substances 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims description 24
- 238000005097 cold rolling Methods 0.000 title claims description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 32
- 238000007667 floating Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 38
- 239000010731 rolling oil Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 9
- 239000010724 circulating oil Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract 3
- 235000019198 oils Nutrition 0.000 description 36
- 239000003925 fat Substances 0.000 description 26
- 239000000839 emulsion Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000005461 lubrication Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 235000014593 oils and fats Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- -1 fatty acid esters Chemical class 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 235000019482 Palm oil Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 235000015278 beef Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 239000005028 tinplate Substances 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0269—Cleaning
- B21B45/029—Liquid recovering devices
- B21B45/0296—Recovering lubricants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lubricants (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、冷間圧延における潤滑剤の濃度調整方法に
関するもので、詳しくは循環給油方式による潤滑剤の供
給において、圧延機から回収された潤滑剤のダーティタ
ンクに、気泡発生装置と攪拌機を設置し、圧延機に供給
する潤滑剤の濃度を調整する方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for adjusting the concentration of lubricant in cold rolling, and more specifically, it relates to a method for adjusting the concentration of lubricant in cold rolling. This invention relates to a method for adjusting the concentration of lubricant supplied to a rolling mill by installing a bubble generator and an agitator in a dirty tank.
従来の技術
一般に冷間圧延機においては、圧延中のワークロールと
ストリップとの接触面における摩擦抵抗を減少せしめ、
低い圧下刃や少ない圧延動力による圧延を可能にすると
共に、製品の表面仕上がりを良好にし、さらに摩擦熱お
よび変形熱を取り除くために圧延潤滑剤の果す役割は、
非常に重要である。Conventional technology In general, in cold rolling mills, the frictional resistance at the contact surface between the work roll and the strip during rolling is reduced,
The role of rolling lubricant is to enable rolling with low reduction blades and low rolling power, improve the surface finish of the product, and remove frictional heat and deformation heat.
Very important.
上記圧延潤滑剤としては、圧延油と水とをエマルジョン
の状態にしたものが使用されている。圧延油としては、
パーム油、牛脂などの精製油脂、スピンドル油、マシン
油などの鉱油、脂肪酸エステル、ペンタエリスリトール
の部分エステルなどの合成エステル等を基油とし、これ
に数％の油性剤、極圧剤、粘度指数向上剤、酸化防止剤
、防錆剤、乳化剤などの添加剤を調合したものが使用さ
れ、これを５０℃近くに昇温された純水または工業用水
等に添加して攪拌し、エマルジョン状態としている。The rolling lubricant used is an emulsion of rolling oil and water. As rolling oil,
Base oils include refined oils and fats such as palm oil and beef tallow, mineral oils such as spindle oil and machine oil, fatty acid esters, and synthetic esters such as pentaerythritol partial esters, and a few percent of oiliness agents, extreme pressure agents, and viscosity index. A mixture of additives such as improvers, antioxidants, rust preventives, emulsifiers, etc. is used, and this is added to pure water or industrial water heated to around 50°C and stirred to form an emulsion. There is.
また、この冷間圧延機への潤滑剤の供給方式（一般に、
クーラントシステムと呼ばれている）としては、高濃度
（１０〜３０％）の潤滑剤エマルジョンを直接ストリッ
プに噴霧し、ロールの冷却は別のノズルから冷却水を吹
付ける直接給油方式と、潤滑と冷却の両機能をもった低
濃度の潤滑剤エマルジョンを多量に吹付け、使用された
潤滑剤エマルジョンは再びタンクに戻され繰返し使用さ
れる循環給油方式がある。最近の圧延機では一部のブリ
キ原板などの極薄製品用高速圧延機を除き、はとんど循
環給油方式が採用されている。In addition, the lubricant supply method to this cold rolling mill (generally,
As for the coolant system), a high concentration (10-30%) lubricant emulsion is sprayed directly onto the strip, and a direct lubrication method is used to cool the roll, in which cooling water is sprayed from a separate nozzle, and a lubrication method is used. There is a circulating lubrication system in which a large amount of a low-concentration lubricant emulsion that has both cooling functions is sprayed, and the used lubricant emulsion is returned to the tank and used repeatedly. Most modern rolling mills, with the exception of some high-speed rolling mills for ultra-thin products such as tin plate, mostly use a circulating oil supply system.
このとき注意しなければならないことは、潤滑剤中の圧
延油濃度および温度である。特に濃度については、圧延
材の被圧延性に比較し、濃度が低い場合は、潤滑不足か
らワークロールとストリップ間で金属接触が発生し、焼
付き疵やヒートスクラッチ疵等が発生する。また、逆に
濃度が高い場合は、潤滑過多からワークロールとストリ
ップ間の摩擦係数が低下し、ワークロールの空転を生じ
、スリップ疵等が発生する。At this time, attention must be paid to the concentration and temperature of the rolling oil in the lubricant. In particular, regarding the concentration, if the concentration is low compared to the rollability of the rolled material, metal contact will occur between the work roll and the strip due to insufficient lubrication, resulting in seizure flaws, heat scratch flaws, etc. On the other hand, when the concentration is high, the friction coefficient between the work roll and the strip decreases due to excessive lubrication, causing the work roll to idle and causing slip flaws and the like.
上記いずれの場合においても、ストリップにこれらの疵
が発生すると、製品としての価値が著しく低下し、かつ
流発生のワークロールを交換しなければならず、作業能
率の低下を招来することとなる。In any of the above cases, if these flaws occur in the strip, the value of the product will be significantly reduced, and the work roll that has caused the strip will have to be replaced, leading to a decrease in work efficiency.
このため、循環給油方式において、圧延油を切換えるこ
となく、同一圧延油を用いて圧延を行う場合、潤滑剤中
の圧延油濃度は被圧延材の圧延性、主に板厚と変形能に
応じて調整するのが一般的である。For this reason, when rolling is performed using the same rolling oil without changing the rolling oil in a circulating oil supply system, the concentration of rolling oil in the lubricant depends on the rollability of the material to be rolled, mainly the plate thickness and deformability. It is common practice to adjust the
すなわち、板厚サイズの薄物から厚物までを圧延する圧
延機においては、潤滑性を要求される薄物では潤滑剤の
濃度を高く、逆に厚物では潤滑剤の濃度を低く調整する
必要があり、通常は１〜３％位の範囲内で調整されてい
る。In other words, in a rolling mill that rolls products ranging from thin to thick plates, it is necessary to adjust the lubricant concentration to be high for thin products that require lubricity, and to lower the lubricant concentration for thick products. , which is usually adjusted within a range of 1 to 3%.
従来の循環給油方式による潤滑剤の供給は、第４図に示
すとおり、圧延機（１）の圧延作業に使用された圧延潤
滑剤を、回収ピット（３）に回収してダーティタンク（
５）に導入し、ダーティタンク（５）からポンプ（７）
により潤滑剤を抜き出し、ペーパーまたはメツシュベル
トフィルター（８）で固形異物を除去したのち、クリー
ンタンク（９〉に供給し、クリーンタンク（９）で浮上
したスカム分は自然落下によりダーティタンク（５）へ
流入するようにポンプ（７）の流量をｗＩ４整する。ま
た、クリーンタンク（９）では、潤滑剤中の鉄分除去を
目的としてポンプ（１０）により電磁フィルター（１１
）を介して循環濾過されている。As shown in Figure 4, the conventional lubricant supply method using the circulating oil supply system collects the rolling lubricant used in the rolling operation of the rolling mill (1) into the collection pit (3) and stores it in the dirty tank (
5) and pump (7) from the dirty tank (5)
After removing the lubricant with a paper or mesh belt filter (8), it is supplied to a clean tank (9>), and the scum that floats up in the clean tank (9) is transferred to the dirty tank (5) by gravity. The flow rate of the pump (7) is adjusted wI4 so that the lubricant flows into the tank.In addition, in the clean tank (9), the electromagnetic filter (11
) is circulated through filtration.
これらの清浄化工程を通過した潤滑剤は、ポンプ（１２
）によって圧延機（１）に循環供給される。The lubricant that has passed through these cleaning steps is pumped (12
) is circulated and supplied to the rolling mill (1).
この第４図に示す圧延潤滑剤循環方式において、濃度を
上げる場合、圧延油の新油または再生油を投入し、逆に
濃度を下げる場合、スキミング装置等を用いてエマルジ
ョン液の一部を系外へ排出したのち、純水または工業用
水を投入する等の処置を講じていた。In the rolling lubricant circulation system shown in Fig. 4, when increasing the concentration, new or recycled rolling oil is added, and when decreasing the concentration, a part of the emulsion liquid is removed from the system using a skimming device, etc. After discharging the water outside, measures were taken such as pouring in pure water or industrial water.
しかしこのような方法では、圧延油使用量の増大、排水
量の増加を招くばかりでなく、ｒ４滑剤中の圧延油濃度
の調整に手間を要するため、被圧延材の板厚による製造
ロフトの集約が必要となっていた。However, this method not only causes an increase in the amount of rolling oil used and the amount of drainage water, but also requires time and effort to adjust the concentration of rolling oil in the R4 lubricant. It had become necessary.
前記第４図に示す以外の冷間圧延機における潤滑剤供給
方式として、−度使用された潤滑剤を油水分離装置に送
って油滴と水の比重差によって油脂分と低濃度エマルジ
ョンとに分離し、前記油脂分と低濃度のエマルジョンと
を別々のポンプによって所望のエマルジョン濃度となる
ような流量比で潤滑剤供給用の主配管に送り、再度圧延
機に供給する方法（特開昭５３−７９７５３号公報）、
あるいは、冷間圧延機の各スタンドの出口に噴射される
低濃度かつ低温の潤滑剤を循環させる一方、その循環潤
滑剤の一部を抽出して新たに圧延油を添加して高濃度の
潤滑剤として各スタンドの噛み込み前で圧延潤滑剤とし
て噴霧し、その後循環潤滑剤に合流させる際、低濃度か
つ低温の潤滑剤に発生するスカムを採取し、鉄分や灰分
等を分離する一方、油脂外を水分から分離し、この分離
した油脂外もしくは必要ならば乳化剤等を配合し、これ
を前記高濃度潤滑剤調整用の新たな圧延油の一部または
全部として添加する方法（特開昭５６−４１０１１号公
報）が開示されている。As a lubricant supply method for a cold rolling mill other than that shown in Fig. 4, the used lubricant is sent to an oil-water separator and separated into oil and fat and a low-concentration emulsion by the difference in specific gravity between oil droplets and water. Then, the oil and fat and the low-concentration emulsion are sent to the main piping for lubricant supply using separate pumps at a flow rate ratio that provides the desired emulsion concentration, and then supplied again to the rolling mill. Publication No. 79753),
Alternatively, a low-concentration, low-temperature lubricant injected into the outlet of each stand of a cold rolling mill is circulated, while a portion of the circulating lubricant is extracted and new rolling oil is added to provide high-concentration lubrication. It is sprayed as a rolling lubricant before the lubricant is caught in each stand, and then when it is added to the circulating lubricant, the scum generated in the low-concentration and low-temperature lubricant is collected and iron and ash are separated, while oil and fat are A method of separating the oil from water, blending the separated oil or fat with an emulsifier, etc. if necessary, and adding this as part or all of the new rolling oil for preparing the high-concentration lubricant (Japanese Patent Laid-Open No. 56 -41011) is disclosed.
しかし、特開昭５３−７９７５３号公報に開示の方法は
、比重差によって油脂外と低濃度のエマルジョンとに分
離するための油水分離装置が必要であり、しかも比重差
によって油脂外を分離するため、一定濃度の油脂外が定
常的に得られない。また、特開昭５６−４１０１１号公
報に開示の方法は、再生油としてスカムを利用するため
、スカム中に含まれる鉄分や灰分等の除去設備が必要で
あり、また、自然浮上するスカムを利用するので、再生
油が定常的に得られないという欠点がある。However, the method disclosed in JP-A-53-79753 requires an oil-water separator to separate the oil and fat from the low-concentration emulsion based on the difference in specific gravity. , it is not possible to consistently obtain a constant concentration of fats and oils. Furthermore, the method disclosed in JP-A-56-41011 uses scum as recycled oil, so it requires equipment to remove iron and ash contained in the scum, and it also uses naturally floating scum. Therefore, there is a drawback that recycled oil cannot be constantly obtained.
また、実開昭５７−１４１８１３号公報および実開昭５
９１１０１１７号公報には、圧延油の回収装置が開示さ
れているが、いずれも自然浮上したスカムを利用するた
め、再生油を安定的に得ることができない。Also, Utility Model Application Publication No. 57-141813 and Utility Model Application No. 57-141813
Although Japanese Patent No. 9110117 discloses a rolling oil recovery device, all of them utilize naturally floated scum, making it impossible to stably obtain recycled oil.
発明が解決しようとする課題
この発明は、従来方法に比較して簡便な方法で潤滑剤中
の油脂外を系内で分離保持しておき、かつ、分離保持し
ておいた油脂外を必要に応じて混合分散することによっ
て、被圧延材の品質に影響を及ぼすことなく、必要とす
る濃度の潤滑剤を調整できる潤滑剤濃度調整方法を提供
するものである。Problems to be Solved by the Invention The present invention separates and retains the outside fats and oils in a lubricant in a system using a method that is simpler than conventional methods, and eliminates the need for the outside of the oils and fats that have been kept separated. The present invention provides a lubricant concentration adjustment method that can adjust the lubricant concentration to a required concentration without affecting the quality of the rolled material by mixing and dispersing the lubricant accordingly.
課題を解決するための手段 この発明は、前記冷間圧延設備の循環給油方式。Means to solve problems The present invention provides a circulating oil supply system for the cold rolling equipment.
における潤滑剤の濃度調整方法を簡便化するため、循環
給油方式により冷間圧延機へ供給する潤滑剤の濃度を調
整する方法において、ダーティタンク内に気泡発生装置
と攪拌装置を設置し、圧延機へ供給する潤滑剤濃度に応
じて気泡発生装置または攪拌装置を駆動し、潤滑剤中の
圧延油濃度ζ・所定濃度に調整するのである。In order to simplify the method of adjusting the concentration of lubricant supplied to the cold rolling mill using a circulating oil supply method, a bubble generator and a stirring device are installed in the dirty tank to simplify the method of adjusting the concentration of lubricant supplied to the cold rolling mill. The bubble generator or stirring device is driven according to the lubricant concentration supplied to the lubricant to adjust the rolling oil concentration ζ in the lubricant to a predetermined concentration.
作 用
この発明においては、ダーティタンクに設置した気泡発
生装置により気泡を吹込むと、潤滑剤中の油脂外の分離
浮上が促進され、ダーティタンク上部に油脂外が浮上し
、下部は油脂分濃度の低い潤滑剤となるから、下部の油
脂分濃度の低い潤滑剤をクリーンタンクに送ることによ
って、潤滑剤中の圧延油濃度を低下せしめることができ
る。また、ダーティタンクに設置した攪拌装置を運転す
ると、上部に浮上していた油脂外が均一に分散され、ダ
ーティタンク内の潤滑剤中の油脂分濃度が上昇するから
、この油脂分濃度の上昇した潤滑剤エマルジョンを、ク
リーンタンクに送ることによって、潤滑剤中の油脂分濃
度を上昇せしめることができる。In this invention, when air bubbles are blown into the air bubbles by the bubble generator installed in the dirty tank, the separation and surfacing of the fat and oil in the lubricant is promoted, and the fat and oil floats to the upper part of the dirty tank, while the lower part has a concentration of oil and fat. The rolling oil concentration in the lubricant can be reduced by sending the lower lubricant with a lower oil and fat concentration to the clean tank. In addition, when the stirring device installed in the dirty tank is operated, the oil and fat that has floated to the top is evenly dispersed, and the concentration of oil and fat in the lubricant in the dirty tank increases. By sending the lubricant emulsion to a clean tank, the concentration of oil and fat in the lubricant can be increased.
したがって、循環潤滑剤中の油脂分濃度を使用する最高
濃度、例えば３％に調整しておき、圧延するストリップ
の板厚および変形能に応じ、気泡発生装置または攪拌装
置を駆動すれば、潤滑剤中の油脂分濃度を所定濃度に調
整できるのである。Therefore, by adjusting the concentration of oil and fat in the circulating lubricant to the maximum concentration used, for example 3%, and driving the bubble generator or stirring device depending on the thickness and deformability of the strip to be rolled, the lubricant can be The concentration of oil and fat inside can be adjusted to a predetermined concentration.
例えば、潤滑剤中の油脂分濃度を１％に調整する場合に
は、その差すなわち２％分に相当する油脂外を、気泡を
吹込んでダーティタンク上部に浮上分離させておくので
ある。For example, when adjusting the fat and oil concentration in the lubricant to 1%, the difference, that is, the fat and oil equivalent to 2%, is floated and separated at the top of the dirty tank by blowing air bubbles into the lubricant.
このため、潤滑剤中の油脂外を系内がら分離したり、潤
滑剤の一部を系外へ排出して水を補給したり、あるいは
圧延油を補給することなく潤滑剤の濃度調整を行うこと
ができる。For this reason, it is possible to separate the outside of the lubricant from the inside of the system, drain some of the lubricant to the outside of the system and replenish water, or adjust the concentration of the lubricant without replenishing rolling oil. be able to.
実施例
実施例１
第２図に示す容量１リツトルのガラス製ビーカー （２
５）に実際の圧延機で使用されている第１表に示す組成
の圧延油を含む潤滑剤０．８リツトルを採取した。そし
て、大気圧下、ゴム管（２６）から圧力０．１ｋｇ／ｃ
ｍ″の空気を１００リツトル／ｗｉｎの割合いで１５分
間吹込んだ。そしてビーカー（２５）の表面に浮上した
油脂外（２７）と底部の潤滑剤（２８）の性状を測定し
た。その結果を第２表に示す。Examples Example 1 A glass beaker with a capacity of 1 liter (2
5) 0.8 liters of a lubricant containing rolling oil having the composition shown in Table 1, which is used in an actual rolling mill, was collected. Then, under atmospheric pressure, a pressure of 0.1 kg/c is applied from the rubber tube (26).
m'' of air was blown at a rate of 100 liters/win for 15 minutes.Then, the properties of the oil (27) floating on the surface of the beaker (25) and the lubricant (28) at the bottom were measured.The results were Shown in Table 2.
以下余白 第 １ 表 （注）油脂分濃度：％、ケン化価： ｍｇＫＯＨ／ｇ。Margin below No. 1 table (Note) Oil concentration: %, saponification value: mgKOH/g.
鉄分： ｐｐｍ。Iron content: ppm.
第２表に示すとおり、潤滑剤中に強制的に空気を吹き込
むことによって、油脂分の分離浮上が促進された。As shown in Table 2, by forcibly blowing air into the lubricant, separation and flotation of oil and fat components was promoted.
また、分離浮上した油脂分は、ホモミキサーを用いて攪
拌することによって、簡単にエマルジョン化可能であっ
た。Furthermore, the separated and floated fats and oils could be easily emulsified by stirring using a homomixer.
実施例２
第１図はこの発明方法を実施するクーラントシステムの
概要を示すもので、圧延機（１）でストリップ（２）の
圧延を行うに際し、圧延作業に使用された潤滑剤は、回
収ピット（３）から回収配管（４）により二分割された
ダーティタンク（５ａ）に回収される。ダーティタンク
（５ａ）とダーティタンク（５ｂ）は。Embodiment 2 Figure 1 shows an outline of a coolant system for carrying out the method of this invention. When rolling a strip (2) in a rolling mill (1), the lubricant used in the rolling operation is transferred to a recovery pit. (3) is collected by a collection pipe (4) into a dirty tank (5a) which is divided into two parts. Dirty tank (5a) and dirty tank (5b).
整流板（６）により仕切られ、ダーティタンク（５ａ）
の下部から潤滑剤がダーティタンク（５ｂ）に流入する
。Dirty tank (5a) partitioned by current plate (6)
The lubricant flows into the dirty tank (5b) from the bottom of the tank.
ダーティタンク（５ｂ）に流入した潤滑剤は、ポンプ（
７）によりペーパーフィルターまたはメツシュベルトフ
ィルター（８）で固形異物を除去されたのち、クリーン
タンク（９）に供給される。そしてクリーンタンク（９
）で浮上したスカムが自然落下によりダーティタンク（
５ｂ）に流入するようポンプ（７）の流量が調整されて
いる。また、クリーンタンク（９）では潤滑剤中の鉄分
除去を目的として、ポンプ（１０）により電磁フィルタ
ー（１１）を介して潤滑剤が循環除去されている。The lubricant that has flowed into the dirty tank (5b) is pumped (
7), solid foreign matter is removed by a paper filter or a mesh belt filter (8), and then supplied to a clean tank (9). and clean tank (9
) The scum that floated to the surface naturally falls into the dirty tank (
5b), the flow rate of the pump (7) is adjusted so as to flow into the pump (7b). Furthermore, in the clean tank (9), the lubricant is circulated and removed by a pump (10) via an electromagnetic filter (11) for the purpose of removing iron from the lubricant.
このようにして清浄化された潤滑剤は、ポンプ（１２〉
を介して配管（１３）により圧延機（１）に供給される
。なお、（１４） （１５）は攪拌機である。The lubricant thus cleaned is transferred to the pump (12)
It is supplied to the rolling mill (1) via a pipe (13). Note that (14) and (15) are agitators.
上記ダーティタンク（５ａ）の底部に気泡発生装置（１
６〉を設置し、調整弁（１７）を介して圧力空気配管（
１８）と接続する。また、ダーティタンク（５ａ）の上
部には攪拌機（１９）を設置する。また、配管（１３）
に。A bubble generator (1) is installed at the bottom of the dirty tank (5a).
6> and connect the pressure air piping (
18). Further, a stirrer (19) is installed at the top of the dirty tank (5a). Also, piping (13)
To.
は油脂分濃度計（２０）を設置し、その信号を潤滑剤濃
度制御装置（２１）に入力する。潤滑剤濃度制御装置（
２１〉は、入力された油脂分濃度と、予め設定された設
定濃度を比較し、実測濃度が設定濃度より高い場合は、
調整弁（１７）に開放信号を出力して開放し、圧力空気
配管（１８）から気泡発生装置（１６）に圧力空気を供
給して気泡を発生せしめ、ダーティタンク（５ａ）の潤
滑剤中の油脂分の分離浮上を促進せしめる。この時攪拌
機（１９）は停止している。逆に実測濃度が設定濃度よ
り低い場合は、潤滑剤濃度制御装置（２１）は、攪拌機
（１９ンに起動信号を出力し、攪拌機（１９）を起動し
てダーティタンク（５ａ）内の分離浮上している油脂分
を攪拌混合して均一に分散せしめ、ダーティタンク（５
ａ）内の潤滑剤濃度を上昇せしめるのである。An oil and fat concentration meter (20) is installed, and its signal is input to a lubricant concentration control device (21). Lubricant concentration control device (
21> compares the input oil and fat concentration with the preset set concentration, and if the actual concentration is higher than the set concentration,
A release signal is output to the regulating valve (17) to open it, and pressurized air is supplied from the pressure air piping (18) to the bubble generator (16) to generate bubbles, thereby removing the lubricant in the dirty tank (5a). Promotes the separation and flotation of fats and oils. At this time, the stirrer (19) is stopped. Conversely, if the measured concentration is lower than the set concentration, the lubricant concentration control device (21) outputs a start signal to the stirrer (19), starts the stirrer (19), and separates and floats the dirty tank (5a). Stir and mix the remaining oils and fats to evenly disperse them, and place them in the dirty tank (5
a) increases the lubricant concentration in
したがって、圧延機（１）における被圧延材の板厚およ
び変形能に応じて、潤滑剤中の圧延油濃度を最高濃度、
例えば３％に調整しておけば、圧延機（１）で圧延する
ストリップ（２）の板厚および変形能に応じ、潤滑剤中
の圧延油濃度を調整する場合、ダーティタンク（５ａ）
内で浮上せしめておく油脂分の量を調整するのみで、潤
滑剤中の圧延油濃度を自在に調整できる。Therefore, depending on the thickness and deformability of the material to be rolled in the rolling mill (1), the concentration of rolling oil in the lubricant can be set to the maximum concentration,
For example, if it is adjusted to 3%, if the rolling oil concentration in the lubricant is adjusted according to the thickness and deformability of the strip (2) to be rolled by the rolling mill (1), the dirty tank (5a)
The concentration of rolling oil in the lubricant can be adjusted freely by simply adjusting the amount of oil floated inside the lubricant.
実施例３
実施例２に記載のクーラントシステムにおいて、ダーテ
ィタンク（５ａ）の容量２５ｍ、ダーティタンク（５ｂ
）の容量２５ｍ１、クリーンタンク（９）の容量５０ｍ
’、潤滑剤噴霧量２０ｍ３／ｍｉｎで圧延油濃度１．５
％の潤滑剤を循環させながら、実機における潤滑剤濃度
の制御性ならびに圧延材品質に及ぼす影響について調査
した。圧力４ ｋｇ／ Ｃｍ”の空気を１０ｍ’／ｍｉ
ｎで多孔質セラミックからなる気泡発生装置（１６）に
供給（第３図ａ点）したところ、第３図に示すとおり、
約３０分で潤滑剤中の圧延油濃度は１．５％から１．０
％（第３図す点）に低下した。また、これによってダー
ティタンク（５ａ）に浮上した油脂分は、１５ｋｗのモ
ーターを備えた竪型電動攪拌機（１９） ２台の使用を
開始（第３図Ｃ点）したところ、２〜３分で均一に混合
されて潤滑剤中の圧延油濃度は、１．５％に上昇した。Example 3 In the coolant system described in Example 2, the capacity of the dirty tank (5a) was 25 m, and the capacity of the dirty tank (5b) was 25 m.
) capacity 25m1, clean tank (9) capacity 50m
', lubricant spray amount 20m3/min, rolling oil concentration 1.5
We investigated the controllability of lubricant concentration in an actual machine and the effect on the quality of rolled material while circulating % of lubricant. Air with a pressure of 4 kg/cm" at 10 m'/mi
When the foam was supplied to the bubble generator (16) made of porous ceramic at point a in Figure 3, as shown in Figure 3.
The concentration of rolling oil in the lubricant changes from 1.5% to 1.0 in about 30 minutes.
% (point in Figure 3). In addition, when we started using two vertical electric stirrers (19) equipped with 15 kW motors (point C in Figure 3), the oil and fat that floated to the dirty tank (5a) was removed within 2 to 3 minutes. After being uniformly mixed, the concentration of rolling oil in the lubricant rose to 1.5%.
また、圧延材品質への影響は、ダーティタンク〈５ｂ）
以降の各フィルター（８）（１１）によって、固形異物
や鉄分が十分除去されているので、問題とはならなかっ
た。In addition, the influence on the quality of rolled material is due to dirty tank <5b)
Since the solid foreign matter and iron content were sufficiently removed by the subsequent filters (8) and (11), this did not pose a problem.
発明の効果
この発明方法によれば、冷間圧延における圧延機に供給
する潤滑剤の濃度を、潤滑剤の循環系内のタンクにおい
て浮上保持せしめる油脂分の量で自在に調整できる。こ
のため、潤滑剤を系外へ抜き出して水を補給したり、新
たに圧延油を混合する等の操作が不要となる。しかも、
従来板厚別に設けていた圧延チャンスの制限が緩和でき
、圧延作業効率を向上せしめることができる。Effects of the Invention According to the method of the present invention, the concentration of the lubricant supplied to the rolling mill during cold rolling can be freely adjusted by adjusting the amount of oil and fat that is kept floating in the tank in the lubricant circulation system. This eliminates the need for operations such as extracting the lubricant from the system and replenishing water or mixing new rolling oil. Moreover,
The restrictions on rolling opportunities that were conventionally provided for each plate thickness can be relaxed, and rolling work efficiency can be improved.
第１図はこの発明方法を実施の場合の概略説明図、第２
図は実施例１の実験の概略説明図、第３図は実施例３に
おける実機に応用した場合の潤滑剤濃度制御特性を示す
線図、第４図は従来の一般的なり−ラントシステムの概
略説明図である。
１・・圧延機、 ２・・・ストリップ、３・
・回収ビット、 ４・・・回収配管、５・ダーテ
ィタンク、 ６・・・整流板、７．１０、■２・・・
ポンプ、
８・固形異物フィルター
９ クリーンタンク、 １１・・・電磁フィルタ１３
・・配管、 １４．１５．１９・・攪拌機、１６・
・気泡発生装置、 １７・・・調整弁、１８・・空
気配管、 ２０・・・油脂分濃度計、２１・潤
滑剤濃度制御装置、
２５・・ビーカー
２７ ・油脂分、
２６・・・ゴムホース、
２８・・潤滑剤、
出 願 人 住友金属工業株式会社Figure 1 is a schematic explanatory diagram of the method of this invention when it is implemented, Figure 2
The figure is a schematic explanatory diagram of the experiment in Example 1, Figure 3 is a diagram showing the lubricant concentration control characteristics when applied to an actual machine in Example 3, and Figure 4 is a schematic diagram of a conventional general lubricant system. It is an explanatory diagram. 1. Rolling mill, 2. Strip, 3.
・Recovery bit, 4... Recovery piping, 5. Dirty tank, 6... Rectifier plate, 7.10, ■2...
Pump, 8. Solid foreign matter filter 9 Clean tank, 11... Electromagnetic filter 13
・・Piping, 14.15.19・・Agitator, 16・
- Bubble generator, 17... Adjustment valve, 18... Air piping, 20... Oil and fat concentration meter, 21. Lubricant concentration control device, 25... Beaker 27 - Oil and fat content, 26... Rubber hose, 28...Lubricant, Applicant: Sumitomo Metal Industries, Ltd.
Claims (1)
濃度を調整する方法において、ダーティタンク内に気泡
発生装置と攪拌装置を設置し、圧延機へ供給する潤滑剤
濃度に応じて気泡発生装置または攪拌装置を駆動し、所
定濃度に調整することを特徴とする冷間圧延における潤
滑剤濃度調整方法。 ２ 圧延機へ供給する潤滑剤中の圧延油の実測濃度と予
め設定した設定濃度を比較し、実測濃度が設定濃度より
低い場合は攪拌装置を駆動して浮上していた油脂分を分
散混合させ、高い場合は気泡発生装置を駆動して油脂分
を浮上分離させ、所定濃度に調整することを特徴とする
請求項１記載の冷間圧延における潤滑剤濃度調整方法。[Claims] 1. In a method of adjusting the concentration of lubricant supplied to a cold rolling mill using a circulating oil supply system, a bubble generator and a stirring device are installed in a dirty tank to adjust the concentration of lubricant supplied to the rolling mill. 1. A method for adjusting lubricant concentration in cold rolling, which comprises driving a bubble generator or a stirring device according to the lubricant concentration to adjust the concentration to a predetermined value. 2 Compare the measured concentration of rolling oil in the lubricant supplied to the rolling mill with the preset concentration, and if the measured concentration is lower than the set concentration, drive the stirring device to disperse and mix the floating oil and fat. 2. The method of adjusting lubricant concentration in cold rolling according to claim 1, further comprising the step of: driving a bubble generator to float and separate the oil and fat when the concentration is high, and adjusting the concentration to a predetermined concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2031112A JPH03234312A (en) | 1990-02-08 | 1990-02-08 | Method for adjusting concentration of lubricant in cold rolling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2031112A JPH03234312A (en) | 1990-02-08 | 1990-02-08 | Method for adjusting concentration of lubricant in cold rolling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03234312A true JPH03234312A (en) | 1991-10-18 |
Family
ID=12322320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2031112A Pending JPH03234312A (en) | 1990-02-08 | 1990-02-08 | Method for adjusting concentration of lubricant in cold rolling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03234312A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601136A (en) * | 2012-03-26 | 2012-07-25 | 宝山钢铁股份有限公司 | Multifunctional single frame emulsion system of reversible cold rolling mill and emulsion operating method of multifunctional single frame emulsion system |
-
1990
- 1990-02-08 JP JP2031112A patent/JPH03234312A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102601136A (en) * | 2012-03-26 | 2012-07-25 | 宝山钢铁股份有限公司 | Multifunctional single frame emulsion system of reversible cold rolling mill and emulsion operating method of multifunctional single frame emulsion system |
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