JPH04238619A - Method for treating belt like metallic body - Google Patents
Method for treating belt like metallic bodyInfo
- Publication number
- JPH04238619A JPH04238619A JP92391A JP92391A JPH04238619A JP H04238619 A JPH04238619 A JP H04238619A JP 92391 A JP92391 A JP 92391A JP 92391 A JP92391 A JP 92391A JP H04238619 A JPH04238619 A JP H04238619A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- scale
- tension
- metal body
- shaped metal
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 35
- 238000005096 rolling process Methods 0.000 claims abstract description 19
- 239000002344 surface layer Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims description 48
- 239000002184 metal Substances 0.000 claims description 48
- 238000011282 treatment Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 4
- 230000003750 conditioning effect Effects 0.000 abstract description 20
- 238000005554 pickling Methods 0.000 abstract description 18
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 230000003746 surface roughness Effects 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 238000000137 annealing Methods 0.000 description 6
- 238000005422 blasting Methods 0.000 description 5
- 238000005097 cold rolling Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000006061 abrasive grain Substances 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 4
- 238000005098 hot rolling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229960002050 hydrofluoric acid Drugs 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/005—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents using brushes
-
- 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)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ステンレス鋼、普通鋼
、チタンおよびその合金、高合金等の帯状金属体の表面
に熱間圧延工程や薄肉鋳片連続鋳造工程にて生成した表
面スケールや表面疵を除去するに際して、表面品質の向
上と酸洗処理工程および表面疵取り工程の省略などを可
能とする帯状金属体の処理方法に関するものである。[Industrial Application Field] The present invention is applicable to the surface scale and the like formed on the surface of a strip metal body made of stainless steel, ordinary steel, titanium and its alloys, high alloys, etc. in a hot rolling process or a continuous casting process of thin-walled slabs. The present invention relates to a method for treating a band-shaped metal body, which makes it possible to improve the surface quality and omit a pickling process and a surface flaw removal process when removing surface flaws.
【０００２】0002
【従来の技術】帯状金属体の製造工程においては、鋳片
の加熱およびその後の熱間圧延や薄肉鋳片連続鋳造など
により帯状金属体の表面に酸化スケールや表面疵が生じ
るため、これらを除去しかつその表面を仕上げるための
処理が必要である。ここで、帯状金属体とはステンレス
鋼、普通鋼、チタンおよびその合金、高合金等の熱延コ
イルまたは薄肉連続鋳造され捲取られたコイルである。
従来の代表的な方法としては、帯状金属体の表面に０．
２〜０．６ｍｍ径の鋼球を投射して表層研掃するショッ
トブラストなどを施してスケールの亀裂や剥離を生じさ
せ、次いで、硝弗酸、硫酸や塩酸などの酸洗によりデス
ケールし、その後に帯状金属体の形状矯正のための冷間
圧延を行い、しかる後ベルト研削により帯状金属体の表
面疵を除去する方法がある。[Prior Art] In the manufacturing process of metal strips, oxidized scale and surface defects are generated on the surface of the metal strips due to heating of the slab and subsequent hot rolling, continuous casting of thin slabs, etc., and these are removed. Moreover, a treatment is required to finish the surface. Here, the belt-shaped metal body is a hot-rolled coil made of stainless steel, common steel, titanium and its alloys, high alloy, or the like, or a thin-wall continuously cast and wound coil. A typical conventional method is to apply 0.0% on the surface of a band-shaped metal body.
Shot blasting, which involves blasting steel balls with a diameter of 2 to 0.6 mm to abrade the surface layer, is performed to cause cracks and peeling of the scale, and then descaling is carried out by pickling with nitric-fluoric acid, sulfuric acid, hydrochloric acid, etc., and then Another method involves performing cold rolling to correct the shape of the metal strip, and then belt grinding to remove surface flaws on the metal strip.
【０００３】しかしながら、従来の処理方法では酸洗工
程は焼鈍工程との連続ラインであり、圧延ラインと研削
ラインは別々に配置されているため、帯状金属体の酸化
スケールと表面疵の除去のためには３ラインを通板させ
る必要があり、能率が極めて悪いという問題があった。
焼鈍酸洗ラインでは、デスケーリングを酸洗により行う
ものであるため、非能率でありかつ少なくとも２槽以上
の複数の酸洗処理槽が必要であり、更に酸洗に伴う多量
の廃液発生があるなど、生産性、コストおよび省力の点
から種々の問題があった。また、ベルト研削による表面
疵取りを板幅方向に均一に行うには、コイルの形状を冷
間加工によりフラット矯正する必要があるが、通常の冷
間圧延ミルを用いて行う場合が多く、そのため本来のゲ
ージダウン（減厚）作業以外に形状矯正作業を余分に行
うため、能率が向上しないばかりかコストアップにつな
がる問題があった。更に、研削ラインでは、回転式エン
ドレスベルトにより帯状金属体の表面を研削する方法が
主体であるが、ベルト寿命が短く頻繁なベルト交換を必
要とするため作業性が悪く、通板速度が低く、その上研
削前の板形状がフラットでないと均一研削できない等の
問題があった。However, in the conventional processing method, the pickling process is a continuous line with the annealing process, and the rolling line and the grinding line are arranged separately. It was necessary to pass the board through three lines, which caused the problem of extremely low efficiency. In the annealing pickling line, descaling is performed by pickling, which is inefficient and requires at least two or more pickling tanks, and a large amount of waste liquid is generated due to pickling. There were various problems in terms of productivity, cost, and labor saving. In addition, in order to uniformly remove surface defects in the width direction of the plate by belt grinding, it is necessary to flatten the shape of the coil by cold working, but this is often done using a normal cold rolling mill. In addition to the original gauge down (thickness reduction) work, additional shape correction work is performed, which not only does not improve efficiency but also leads to increased costs. Furthermore, in grinding lines, the main method is to grind the surface of the strip metal body using a rotary endless belt, but the belt life is short and frequent belt replacement is required, resulting in poor workability and low threading speed. In addition, there was a problem that uniform grinding was not possible unless the plate shape before grinding was flat.
【０００４】そこで、デスケーリング能率向上や熱延鋼
帯の表面品質改善を目的に、テンションレベラーから成
る前処理工程の後に複数の酸洗処理工程を設けると共に
、この複数の酸洗処理工程間に金属残渣やスマットを除
去する研削工程を組み合わせたデスケーリングラインが
特開昭５９−４１４８２号公報に開示されている。しか
しながら、該デスケーリングラインは、鋼帯の表面品質
がある程度改善されるがその効果には限度があり、デス
ケーリングの殆どを酸洗処理により行うことから複数の
酸洗処理槽が必要であるため、初期投資が多大でかつ酸
洗に伴う多量の廃液の処理が必要である。また、各酸洗
処理工程間に設けられた研削工程が鋼帯の表面疵を積極
的に除去するためのものでないため、該デスケーリング
ラインを通板した鋼帯を表面疵除去のための研削ライン
に通板しなければならない問題がある。Therefore, in order to improve the descaling efficiency and the surface quality of the hot rolled steel strip, a plurality of pickling treatment steps are provided after the pretreatment step consisting of a tension leveler, and a A descaling line that combines a grinding process for removing metal residues and smut is disclosed in Japanese Patent Laid-Open No. 59-41482. However, although this descaling line improves the surface quality of the steel strip to some extent, its effectiveness is limited, and most of the descaling is done by pickling treatment, so multiple pickling treatment tanks are required. However, the initial investment is large and a large amount of waste liquid associated with pickling must be treated. In addition, since the grinding process provided between each pickling treatment process is not intended to actively remove surface flaws on the steel strip, the steel strip that has passed through the descaling line is subjected to grinding to remove surface flaws. There is a problem of having to thread the plate through the line.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、ステンレス
鋼、普通鋼、チタンおよびその合金、高合金等において
熱間圧延工程や薄肉鋳片連続鋳造工程にて生成した帯状
金属体の表面スケールや表面疵を除去するに際して、表
面品質の向上と酸洗処理工程および表面疵取り工程の省
略化などを可能とするメカニカルデスケーリングおよび
表面コンディショニング処理により帯状金属体の処理作
業を高能率化すると共に、酸洗および廃液処理の省略化
による製造コスト減と公害対策などの投資減と、作業環
境の改善を図り、更に連続処理化によって別ラインでの
疵取り作業を省略することを目的としている。[Problems to be Solved by the Invention] The present invention aims to solve the problem of surface scale and the like of strip-shaped metal bodies produced in stainless steel, common steel, titanium and their alloys, high alloys, etc. in the hot rolling process or the continuous casting process of thin-walled cast slabs. When removing surface flaws, we improve the efficiency of processing work on strip metal objects through mechanical descaling and surface conditioning treatments that improve surface quality and omit pickling and surface flaw removal processes. The aim is to reduce manufacturing costs by omitting pickling and waste liquid treatment, reduce investment in pollution control measures, improve the working environment, and eliminate flaw removal work on a separate line by making the process continuous.
【０００６】[0006]
【課題を解決するための手段】本発明は、この目的のた
めにメカニカルデスケーリングおよび表面コンディショ
ニング処理とその組合せを種々検討した結果、完成した
もので、その要旨とするところは下記のとおりである。
１．帯状金属体をペイオフリールより捲き戻して供給し
、続いてメカニカルな手段により表面スケールに亀裂ま
たは剥離を生じせしめ、続いて酸を使用することなく素
地を含む表層部をメカニカルに除去し、続いて厚み３０
μｍ 以下の素地をメカニカルに除去し、続いて洗浄処
理を行い、続いてテンションリールにより捲き取ること
を特徴とする帯状金属体の処理方法。
２．素地を含む表層部をメカニカルに除去するに際して
、仕上げ面の粗さをＲｍａｘ ≦２０μｍ にすること
を特徴とする上記１項記載の帯状金属体の処理方法。
３．洗浄処理に続いて切替え装置により通板ラインを切
替え、続いてブライドルロールによって（圧延に必要な
）張力を付与し、続いて圧延し、続いてテンションリー
ルにより捲き取ることを特徴とする上記１項記載の帯状
金属体の処理方法。[Means for Solving the Problems] The present invention was completed as a result of various studies on mechanical descaling and surface conditioning treatments and their combinations for this purpose, and the gist thereof is as follows. . 1. The strip-shaped metal body is wound back from a payoff reel and fed, and then the surface scale is cracked or peeled off by mechanical means.The surface layer including the base material is mechanically removed without using an acid. Thickness 30
A method for processing a band-shaped metal object, which comprises mechanically removing a base material having a size of .mu.m or less, followed by a cleaning treatment, and then winding it up with a tension reel. 2. 2. The method for treating a band-shaped metal body according to item 1 above, characterized in that when mechanically removing the surface layer including the substrate, the roughness of the finished surface is set to Rmax≦20 μm. 3. Item 1 above, characterized in that following the cleaning process, the threading line is switched using a switching device, then tension (necessary for rolling) is applied using a bridle roll, then rolling is performed, and then winding is performed using a tension reel. A method of processing the described band-shaped metal body.
【０００７】[0007]
【作用】本発明に関わる帯状金属体の処理方法について
以下に図面に基づいて詳細に説明する。図１は本発明方
法を実施するためのプロセスラインの１実施例を示す概
略説明図である。図面において、１は帯状金属体を捲き
戻して供給するペイオフリール、２は熱間圧延または薄
肉鋳造された帯状金属体、３は帯状金属体に曲げ加工や
引張加工を施すテンションレベラー、４は帯状金属体の
表面に鋼球を投射する乾式または湿式ショットブラスト
である。５は例えばバックアップロール５ｂと弾性砥石
ロール５ａとでそれぞれ対を成し、帯状金属体の表裏両
面を研削する重研削装置である。６は例えばバックアッ
プロール６ｂと弾性砥石ロールまたはブラシロール６ａ
とでそれぞれ対を成し、帯状金属体の表裏両面をメカニ
カルにコンディショニングする表面コンディショニング
装置である。ここで弾性砥石ロールとは板の形状になじ
みやすくするためにある程度の弾性を持たせたロール状
の砥石であり、例えば砥粒が塗布された円盤を積層しロ
ール状に成形したもの（積層型）やフラップホィールを
積層しロール状に成形したもの（フラップ型）等がある
。ブラシロールとは、例えば砥粒が内包されたナイロン
繊維から成るブラシをロール状に成形したもの等がある
。７は重研削および表面コンディショニングされた帯状
金属体の表面に付着した金属残渣やスケール粉等を除去
するブラシ洗浄装置である。８は帯状金属体をテンショ
ンリールまたは圧延機へ送るための切替え機である。
９は洗浄された帯状金属体を巻き取るテンションリール
である。１０は９で帯状金属体を捲き取らずに洗浄され
た帯状金属体を引き続いて圧延を行うためのテンション
を付与するブライドルロールである。１１はデスケール
または疵取りされた帯状金属体を圧延する圧延機である
。１２は圧延された帯状金属体を巻き取るテンションリ
ールである。[Operation] The method for treating a band-shaped metal body according to the present invention will be explained in detail below with reference to the drawings. FIG. 1 is a schematic explanatory diagram showing one embodiment of a process line for carrying out the method of the present invention. In the drawing, 1 is a payoff reel that unwinds and supplies a strip metal body, 2 is a hot-rolled or thin-walled metal strip body, 3 is a tension leveler that performs bending or tensioning on the strip metal body, and 4 is a strip metal body. It is a dry or wet shot blasting method in which steel balls are projected onto the surface of a metal object. Reference numeral 5 denotes a heavy-duty grinding device that includes, for example, a backup roll 5b and an elastic grindstone roll 5a, each forming a pair and grinding both the front and back sides of a band-shaped metal body. 6 is, for example, a backup roll 6b and an elastic grindstone roll or a brush roll 6a.
This is a surface conditioning device that mechanically conditions both the front and back surfaces of a strip-shaped metal body. Here, an elastic whetstone roll is a roll-shaped whetstone that has a certain degree of elasticity so that it can easily conform to the shape of the plate. ) and those made by stacking flap wheels and forming them into a roll shape (flap type). The brush roll includes, for example, a brush made of nylon fibers containing abrasive grains formed into a roll shape. Reference numeral 7 denotes a brush cleaning device for removing metal residues, scale powder, etc. adhering to the surface of the belt-shaped metal body that has been subjected to heavy grinding and surface conditioning. 8 is a switching machine for sending the strip metal body to a tension reel or a rolling mill. Reference numeral 9 denotes a tension reel for winding up the cleaned belt-shaped metal body. Reference numeral 10 denotes a bridle roll that applies tension to continue rolling the cleaned belt-shaped metal body at 9 without rolling it up. Reference numeral 11 denotes a rolling mill that rolls the descaled or flawed strip metal body. Reference numeral 12 denotes a tension reel for winding up the rolled metal strip.
【０００８】このような帯状金属体の処理工程において
、帯状金属体２はペイオフリールから巻き戻されて、ま
ずテンションレベラー３で均一研削・研磨を容易にする
ための形状矯正がなされ、更に曲げおよび引張加工によ
り酸化スケールに亀裂が導入される。続いて、乾式また
は湿式ショットブラスト４で表面に投射される鋼球の衝
突力により酸化スケールに亀裂や剥離を生じさせる。
次に、重研削装置５の弾性砥石ロール５ａにて、酸化ス
ケールを含む表層部を研削してデスケールと疵取りが同
時に行われる。続いて、表面コンディショニング装置６
の弾性砥石ロールまたはブラシロール６ａあるいは酸洗
処理にて素地が若干研削あるいは溶削されると共に重研
削面の目ならしあるいは平滑化・ボカシが施される。し
かる後に、帯状金属体の表面に付着している金属残渣や
スケール粉等を洗浄、除去されて仕上げられ、テンショ
ンリール９に巻き取られるのである。また、洗浄した後
更にブライドルロール１０にて帯状金属体に張力が付与
されつつ圧延機１１によって表面を一層平滑化させ、テ
ンションリール１２に巻き取られるのである。[0008] In the process of processing such a band-shaped metal body, the band-shaped metal body 2 is unwound from the payoff reel, first corrected in shape to facilitate uniform grinding and polishing by a tension leveler 3, and then bent and polished. Tensile processing introduces cracks in the oxide scale. Subsequently, the impact force of steel balls projected onto the surface by dry or wet shot blasting 4 causes cracks and peeling in the oxide scale. Next, the elastic grindstone roll 5a of the heavy-duty grinding device 5 grinds the surface layer containing the oxidized scale to simultaneously perform descaling and flaw removal. Next, the surface conditioning device 6
The base material is slightly ground or melted using the elastic grindstone roll or brush roll 6a or pickling treatment, and the heavily ground surface is leveled, smoothed, and blurred. Thereafter, metal residues, scale powder, etc. adhering to the surface of the belt-shaped metal body are cleaned and finished, and the belt-shaped metal body is wound onto a tension reel 9. Further, after cleaning, tension is applied to the strip metal body by a bridle roll 10, the surface is further smoothed by a rolling mill 11, and the strip metal body is wound onto a tension reel 12.
【０００９】ここでは、帯状金属体のデスケールと疵取
りをメカニカルな重研削で行うが、熱間圧延あるいはそ
の後の工程の焼鈍や薄肉鋳片連続鋳造で発生するスケー
ルや表面疵の素地へのくいこみ深さは少なくとも５〜１
０μｍ 程度以上あるため、スケールや表面疵を除去す
るためには素地を含む表層部を除去する重研削を施さな
ければならない。重研削量は少なくとも１０μｍ を超
える必要がある。望ましくは４０μｍ を超えるのが良
い。更に、重研削後の表面粗さはＲｍａｘ が２０μｍ
を超えるとスクラッチのような深い研削目を十分に除
去するためには後工程の表面コンディショニングの負荷
が増大する。
従って、重研削後の表面粗さを表面コンディショニング
の負荷軽減の点からＲｍａｘ ≦２０μｍ が望ましい
。更に望ましくはＲｍａｘ ≦５μｍ にするのが良い
。そのために重研削は２パス以上で行い、最終パスでは
Ｒｍａｘ ≦２０μｍ に対して砥粒番手を＃１２０以
上、Ｒｍａｘ ≦５μｍ に対して＃１８０以上で行う
のが望ましい。[0009] Here, the descaling and flaw removal of the strip-shaped metal body are carried out by mechanical heavy grinding, but the scale and surface flaws that occur during hot rolling, annealing in the subsequent process, and continuous casting of thin-walled cast slabs may not penetrate into the base material. Depth is at least 5-1
Since the diameter is approximately 0 μm or more, heavy grinding must be performed to remove the surface layer including the substrate in order to remove scale and surface flaws. The amount of heavy grinding must exceed at least 10 μm. It is preferable that the thickness exceeds 40 μm. Furthermore, the surface roughness after heavy grinding is Rmax of 20 μm.
If this value is exceeded, the load of surface conditioning in the subsequent process will increase in order to sufficiently remove deep grinding marks such as scratches. Therefore, from the viewpoint of reducing the load of surface conditioning on the surface roughness after heavy grinding, it is desirable that Rmax≦20 μm. More preferably, Rmax≦5 μm. For this purpose, heavy grinding is preferably performed in two or more passes, and in the final pass, the abrasive grain size is desirably #120 or more for Rmax≦20 μm, and #180 or more for Rmax≦5 μm.
【００１０】次に、重研削後の表面コンディショニング
は重研削面の目ならしのための工程であるが、素地の除
去厚みを３０μｍ 超にすると、重研削に比べ細かい砥
粒番手の弾性砥石ロールあるいはブラシロールを使用す
るため、処理効率が悪く更に歩留りも低下する。従って
、表面コンディショニングの素地の除去厚みは処理効率
および歩留りの点から３０μｍ 以下にした。また、表
面コンディショニング後の仕上げ面の粗さＲｍａｘ が
５μｍ を超えると冷延焼鈍後の製品でも研削目や表面
凹凸が残り良好な表面性状が得られないため、表面粗さ
Ｒｍａｘ ≦５μｍ が良い。望ましくはＲｍａｘ ≦
２．５μｍ にするのが良く、そのためには表面コンデ
ィショニングを２パス以上に分けて行っても良い。砥粒
番手は、Ｒｍａｘ ≦５μｍ に対して砥粒番手を＃１
８０以上、Ｒｍａｘ ≦２．５μｍ に対して＃２４０
以上で行うのが望ましい。また、表面コンディショニン
グ後に硫酸、硝酸、硝弗酸などの酸洗処理は、研削目の
平滑化あるいはボカシの点から効果的であり、必要に応
じて行っても良い。[0010] Next, surface conditioning after heavy grinding is a process for leveling the surface of the heavily ground surface, but if the removal thickness of the substrate exceeds 30 μm, an elastic grindstone roll with a finer abrasive grain count than in heavy grinding is required. Alternatively, since a brush roll is used, the processing efficiency is poor and the yield is also reduced. Therefore, the thickness of the substrate removed during surface conditioning was set to 30 μm or less from the viewpoint of processing efficiency and yield. Furthermore, if the roughness Rmax of the finished surface after surface conditioning exceeds 5 μm, grinding marks and surface irregularities remain even in the product after cold rolling annealing, making it impossible to obtain a good surface quality. Therefore, it is preferable that the surface roughness Rmax ≦5 μm. Preferably Rmax≦
It is preferable to set the thickness to 2.5 μm, and for that purpose, surface conditioning may be performed in two or more passes. The abrasive grain count is #1 for Rmax ≦5 μm.
#240 for 80 or more, Rmax ≦2.5μm
It is desirable to do this above. Further, pickling treatment with sulfuric acid, nitric acid, nitric-fluoric acid, etc. after surface conditioning is effective in terms of smoothing or blurring the grinding marks, and may be carried out as necessary.
【００１１】表面コンディショニング後に圧延を組み合
わせれば表面は一層平滑化されると共に、効率的に中間
板厚まで圧延加工できるため生産性が大いに向上できる
。圧延の全圧下率が２０％未満では、表面コンディショ
ニングでの目残りが十分に消せない。従って、圧延の全
圧下率は２０％以上が好ましい。また、圧延機のタイプ
は大圧下が可能であることおよび形状制御性に優れる点
から６段ロール圧延機が好ましく、更に圧延機のスタン
ド数は重研削・表面コンディショニングの通板速度が通
常の圧延速度に比べ１桁以上遅いため３〜４スタンドで
十分であり、設備投資の点から３スタンド以下が好まし
い。[0011] If rolling is combined after surface conditioning, the surface will be made even smoother, and productivity can be greatly improved since rolling can be carried out efficiently to an intermediate thickness. If the total reduction ratio during rolling is less than 20%, the marks left by surface conditioning cannot be sufficiently removed. Therefore, the total reduction ratio in rolling is preferably 20% or more. In addition, the type of rolling mill is preferably a 6-high roll mill because it is capable of large reduction and has excellent shape controllability, and the number of stands of the rolling mill is such that the threading speed for heavy grinding and surface conditioning is higher than that of normal rolling. Since the speed is more than an order of magnitude slower than the speed, 3 to 4 stands are sufficient, and from the viewpoint of equipment investment, 3 stands or less is preferable.
【００１２】0012
【実施例】図１に示す工程に準じて帯状金属体を表１に
示す条件で重研削および表２に示す条件で表面コンディ
ショニングし、デスケール評価、表面粗さおよび研削量
を調査した。その結果を表２に示した。この表において
、研削量は処理前後のサンプルを採取して断面を顕微鏡
で観察して除去厚みを算出した。表面粗さは各処理後に
サンプルを採取し板幅方向に粗度計にて測定した。デス
ケール評価は、次のようにした。
○：スケール残りおよび表面疵なし。
△：スケール残りが認められないが、表面疵は残存。
×：スケールおよび表面疵残存。
負荷は幅５０ｍｍ当たりの主軸モーター電流値である。
また、冷延焼鈍の条件は通常行っている条件とした。こ
れらの表から明らかなように本発明法による帯状金属体
の評価結果はいずれも良好であり、スケール残りや表面
疵は認められず、冷延焼鈍後の製品も良好な表面性状が
得られる。EXAMPLE According to the process shown in FIG. 1, a metal strip was subjected to heavy grinding under the conditions shown in Table 1 and surface conditioning under the conditions shown in Table 2, and the descaling evaluation, surface roughness, and amount of grinding were investigated. The results are shown in Table 2. In this table, the amount of grinding was determined by taking samples before and after treatment, observing the cross section with a microscope, and calculating the removed thickness. The surface roughness was measured by taking a sample after each treatment and measuring it in the board width direction using a roughness meter. Descaling evaluation was performed as follows. ○: No scale remaining and no surface flaws. △: No scale residue is observed, but surface flaws remain. ×: Scale and surface flaws remain. The load is the main shaft motor current value per 50 mm width. In addition, the conditions for cold rolling annealing were the same as those normally used. As is clear from these tables, the evaluation results of the band-shaped metal bodies produced by the method of the present invention are all good, with no scale residue or surface flaws observed, and the products after cold rolling annealing also have good surface properties.
【００１３】[0013]
【表１】[Table 1]
【００１４】[0014]
【表２】[Table 2]
【００１５】[0015]
【発明の効果】以上のことから明らかな如く、本発明に
従い帯状金属体を処理すれば、表面スケールや表面疵を
除去するに際して、帯状金属体の表面品質向上と酸洗処
理および表面疵取り工程の省略などを可能とするメカニ
カルな重研削およびメカニカルな表面コンディショニン
グ方法によりデスケーリングを高能率化すると共に、酸
および廃液処理の省略化による製造コスト減と公害対策
などの投資減と、作業環境の改善を図り、更に連続処理
による別ラインでの疵取りの省略を実施することが可能
となる。[Effects of the Invention] As is clear from the above, when a strip metal body is treated according to the present invention, surface scale and surface flaws can be removed, the surface quality of the strip metal body can be improved, and pickling treatment and surface scratch removal steps can be improved. In addition to increasing the efficiency of descaling through mechanical heavy grinding and mechanical surface conditioning methods that make it possible to omit acid and waste liquid treatment, it also reduces manufacturing costs by omitting acid and waste liquid treatment, reduces investments in pollution control, and improves the working environment. It is possible to improve the process and also to omit removing defects on a separate line due to continuous processing.
【図１】本発明を実施するための１実施例を示す概略説
明図である。FIG. 1 is a schematic explanatory diagram showing one embodiment for carrying out the present invention.
１ ペイオフリール
２ 帯状金属体
３ テンションレベラー
４ 乾式または湿式ショットブラスト５
重研削装置
５ａ 弾性砥石ロール
５ｂ バックアップロール
６ 表面コンディショニング装置６ａ ブラシ
ロール
６ｂ バックアップロール
７ ブラシ洗浄装置
８ 切替え機
９ テンションリール
１０ ブライドルロール
１１ 圧延機
１２ テンションリール1 Payoff reel 2 Metal strip 3 Tension leveler 4 Dry or wet shot blasting 5
Heavy grinding device 5a Elastic grindstone roll 5b Backup roll 6 Surface conditioning device 6a Brush roll 6b Backup roll 7 Brush cleaning device 8 Switching machine 9 Tension reel 10 Bridle roll 11 Rolling machine 12 Tension reel
Claims (3)
戻して供給し、続いてメカニカルな手段により表面スケ
ールに亀裂または剥離を生じせしめ、続いて酸を使用す
ることなく素地を含む表層部をメカニカルに除去し、続
いて厚さ３０μｍ 以下の素地をメカニカルに除去し、
続いて洗浄処理を行い、続いてテンションリールにより
捲き取ることを特徴とする帯状金属体の処理方法。Claim 1: A strip-shaped metal body is wound back from a payoff reel and fed, and then cracks or peeling is caused in the surface scale by mechanical means, and then the surface layer including the substrate is mechanically treated without using an acid. Then, mechanically remove the substrate with a thickness of 30 μm or less,
A method for processing a band-shaped metal object, which is characterized in that it is then subjected to a cleaning treatment and then wound up using a tension reel.
するに際して、仕上げ面の粗さをＲｍａｘ ≦２０μｍ
にすることを特徴とする請求項１記載の帯状金属体の
処理方法。[Claim 2] When mechanically removing the surface layer including the substrate, the roughness of the finished surface is set to Rmax ≦20 μm.
2. The method for treating a band-shaped metal body according to claim 1, further comprising:
板ラインを切替え、続いてブライドルロールによって圧
延に必要な張力を付与し、続いて圧延し、続いてテンシ
ョンリールにより捲き取ることを特徴とする請求項１記
載の帯状金属体の処理方法。[Claim 3] Following the cleaning process, the threading line is switched by a switching device, the tension necessary for rolling is applied by a bridle roll, the rolling is continued, and the strip is wound up by a tension reel. A method for treating a band-shaped metal body according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3000923A JP2501137B2 (en) | 1991-01-09 | 1991-01-09 | Method for treating strip-shaped metal body with good surface properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3000923A JP2501137B2 (en) | 1991-01-09 | 1991-01-09 | Method for treating strip-shaped metal body with good surface properties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04238619A true JPH04238619A (en) | 1992-08-26 |
| JP2501137B2 JP2501137B2 (en) | 1996-05-29 |
Family
ID=11487211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3000923A Expired - Lifetime JP2501137B2 (en) | 1991-01-09 | 1991-01-09 | Method for treating strip-shaped metal body with good surface properties |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2501137B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0706840A3 (en) * | 1994-10-14 | 1996-08-07 | Mannesmann Ag | Method and device for manufacturing cold rolled stainless steel from hot rolled strip |
| EP1005926A2 (en) * | 1998-11-30 | 2000-06-07 | Danieli Wean, a division of Danieli Corporation | Process and apparatus for cleaning metal strip |
| EP1099512A2 (en) * | 1999-11-12 | 2001-05-16 | SMS Demag AG | Apparatus for clean grinding of scaled hotband |
| JP2003253491A (en) * | 2002-03-06 | 2003-09-10 | Jfe Steel Kk | Electroplating method for band steel excellent in uniformity |
| KR100847029B1 (en) * | 2002-05-02 | 2008-07-17 | 주식회사 포스코 | System and Method for removing scale on strip |
| JP2008207203A (en) * | 2007-02-26 | 2008-09-11 | Jfe Steel Kk | Stainless steel strip, and method for manufacturing stainless steel strip |
| CN102083562A (en) * | 2008-07-04 | 2011-06-01 | Posco公司 | Method and facility for removing scale from hot rolled steel sheet |
| CN105196147A (en) * | 2015-10-08 | 2015-12-30 | 艾洛益(杭州)材料科技有限公司 | Moment-of-force type metal band precision polisher |
| CN105945074A (en) * | 2016-02-02 | 2016-09-21 | 北京科技大学 | Cold rolled strip steel acid-free descaling system and descaling method |
| CN107962486A (en) * | 2017-11-20 | 2018-04-27 | 郑州诚合信息技术有限公司 | A kind of good building bar derusting device of effect that derusts |
| CN108787743A (en) * | 2018-04-24 | 2018-11-13 | 日照钢铁控股集团有限公司 | A kind of manufacturing technique method of high-strength steel |
| CN112847061A (en) * | 2020-12-31 | 2021-05-28 | 浦项(张家港)不锈钢股份有限公司 | Method for removing cracks on surface of super austenitic stainless steel strip steel and product |
| CN112981070A (en) * | 2021-02-09 | 2021-06-18 | 鞍钢股份有限公司 | Method for producing oriented silicon steel without pickling after normalization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58128216A (en) * | 1982-01-25 | 1983-07-30 | Kawasaki Steel Corp | Descaling method of thin plate |
| JPH01273607A (en) * | 1988-04-25 | 1989-11-01 | Nisshin Steel Co Ltd | Method and device for processing hot rolled alloy steel strip |
-
1991
- 1991-01-09 JP JP3000923A patent/JP2501137B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58128216A (en) * | 1982-01-25 | 1983-07-30 | Kawasaki Steel Corp | Descaling method of thin plate |
| JPH01273607A (en) * | 1988-04-25 | 1989-11-01 | Nisshin Steel Co Ltd | Method and device for processing hot rolled alloy steel strip |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0706840A3 (en) * | 1994-10-14 | 1996-08-07 | Mannesmann Ag | Method and device for manufacturing cold rolled stainless steel from hot rolled strip |
| EP1005926A2 (en) * | 1998-11-30 | 2000-06-07 | Danieli Wean, a division of Danieli Corporation | Process and apparatus for cleaning metal strip |
| EP1005926A3 (en) * | 1998-11-30 | 2002-07-24 | Danieli Wean, a division of Danieli Corporation | Process and apparatus for cleaning metal strip |
| EP1099512A2 (en) * | 1999-11-12 | 2001-05-16 | SMS Demag AG | Apparatus for clean grinding of scaled hotband |
| EP1099512A3 (en) * | 1999-11-12 | 2003-10-01 | SMS Demag AG | Apparatus for clean grinding of scaled hotband |
| JP2003253491A (en) * | 2002-03-06 | 2003-09-10 | Jfe Steel Kk | Electroplating method for band steel excellent in uniformity |
| KR100847029B1 (en) * | 2002-05-02 | 2008-07-17 | 주식회사 포스코 | System and Method for removing scale on strip |
| JP2008207203A (en) * | 2007-02-26 | 2008-09-11 | Jfe Steel Kk | Stainless steel strip, and method for manufacturing stainless steel strip |
| CN102083562A (en) * | 2008-07-04 | 2011-06-01 | Posco公司 | Method and facility for removing scale from hot rolled steel sheet |
| JP2011526543A (en) * | 2008-07-04 | 2011-10-13 | ポスコ | Hot strip strip removal method and scale removal equipment |
| US8806910B2 (en) | 2008-07-04 | 2014-08-19 | Posco | Method and apparatus for removing scale from hot-rolled steel strip |
| CN105196147A (en) * | 2015-10-08 | 2015-12-30 | 艾洛益(杭州)材料科技有限公司 | Moment-of-force type metal band precision polisher |
| CN105945074A (en) * | 2016-02-02 | 2016-09-21 | 北京科技大学 | Cold rolled strip steel acid-free descaling system and descaling method |
| CN107962486A (en) * | 2017-11-20 | 2018-04-27 | 郑州诚合信息技术有限公司 | A kind of good building bar derusting device of effect that derusts |
| CN108787743A (en) * | 2018-04-24 | 2018-11-13 | 日照钢铁控股集团有限公司 | A kind of manufacturing technique method of high-strength steel |
| CN112847061A (en) * | 2020-12-31 | 2021-05-28 | 浦项(张家港)不锈钢股份有限公司 | Method for removing cracks on surface of super austenitic stainless steel strip steel and product |
| CN112981070A (en) * | 2021-02-09 | 2021-06-18 | 鞍钢股份有限公司 | Method for producing oriented silicon steel without pickling after normalization |
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|---|---|
| JP2501137B2 (en) | 1996-05-29 |
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