JPH0299215A - Pinch roll - Google Patents
Pinch rollInfo
- Publication number
- JPH0299215A JPH0299215A JP25266188A JP25266188A JPH0299215A JP H0299215 A JPH0299215 A JP H0299215A JP 25266188 A JP25266188 A JP 25266188A JP 25266188 A JP25266188 A JP 25266188A JP H0299215 A JPH0299215 A JP H0299215A
- Authority
- JP
- Japan
- Prior art keywords
- pinch roll
- ruggedness
- roughness
- roll
- carbon
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 239000010962 carbon steel Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000003746 surface roughness Effects 0.000 abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000005422 blasting Methods 0.000 description 9
- 238000005096 rolling process Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 238000009749 continuous casting Methods 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Metal Rolling (AREA)
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、銅荒引線などの連続鋳造圧延設備に用いら
れろ荒引線の引取用ピンチロールの改良に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an improvement in a pinch roll for taking off rough drawing wires used in continuous casting and rolling equipment for copper rough drawing wires and the like.
「従来の技術」
従来より銅荒引線などの連続鋳造圧延設備に用いられる
引取用ピンチロールの表面には、摩擦係数を上げて荒引
線の把持能力を高めるために、ショツトブラストなどの
表面処理により凹凸が形成されている。またこのピンチ
ロールは、ピンチロール表面の凹凸の摩滅による減少、
及びこれに伴う荒引線の把持能力の低下を防ぐために、
焼き入れされた工具鋼からなっていた。``Prior Technology'' The surface of pinch rolls used for continuous casting and rolling equipment for copper rough drawing wire has been treated with surface treatments such as shot blasting in order to increase the coefficient of friction and improve the gripping ability of the rough drawing wire. Irregularities are formed. In addition, this pinch roll can be reduced due to wear of the unevenness on the pinch roll surface
And in order to prevent the accompanying decline in the ability to hold the rough line,
It was made of hardened tool steel.
「発明が解決しようとする課題」
ところが、この焼き入れされた工具鋼からなるピンチロ
ールでも、長時間使用していると表面の凹凸の凸部が摩
滅するか、または銅荒引線から生じる銅の粉が表面凹凸
の凹部に埋め込まれ、結果的に凹凸が少なくなるなどの
理由により、荒引線に対するピンチロール表面の摩擦係
数が低下することがある。このような状態になると、ピ
ンチロールの荒引線に対する把持機能が低下し、圧延機
の最終スタンドを出てくる荒引線の線速と等しい速度で
荒引線を引き取ることができなくなり、結果として最終
ロール出口においてコブルという挫屈現象を起こし圧延
工程が止まってしまう問題がある。そこで、ピンチロー
ル表面の摩耗による寿命を長くするために、強力なショ
ツトブラスト処理を行い表面凹凸の粗さを大す（シたピ
ンチロールが使用されることがあった。ところがこのピ
ンチロールを用いて引取を行うと、表面凹凸の凸部が欠
は落ち、これが鉄異物として荒引線表面に埋め込まれて
しまう問題があった。そしてこのように鉄異物が埋め込
まれノー荒引線は、細線化した場合鉄異物の大きさの３
倍程度まで伸線したときに断線を起こし易いという問題
があった。``Problems to be Solved by the Invention'' However, even with pinch rolls made of hardened tool steel, when used for long periods of time, the convex and convex portions on the surface wear out, or copper buildup from the copper rough drawing wire wears out. The coefficient of friction of the pinch roll surface with respect to the rough drawing line may decrease due to reasons such as powder being embedded in the concave portions of the surface irregularities and resulting in fewer concavities and convexities. In this situation, the ability of the pinch rolls to grip the rough drawing line deteriorates, making it impossible to take off the rough drawing line at a speed equal to the line speed of the rough drawing line coming out of the final stand of the rolling mill, and as a result, the final roll There is a problem in that a buckling phenomenon called cobble occurs at the exit and the rolling process stops. Therefore, in order to prolong the life of the pinch roll surface due to abrasion, a strong shot blasting treatment is applied to increase the roughness of the surface. There was a problem in that when the wire was picked up, the convex parts of the surface unevenness would fall off and become embedded in the surface of the rough drawn wire as iron foreign matter.Then, as the iron foreign matter was embedded in this way, the unrough drawn wire became thinner. If the size of the iron foreign object is 3
There was a problem in that wire breakage was likely to occur when the wire was drawn to about double the amount.
本発明は上記事情に鑑みてなされたもので、線材の引取
り工程においてピンチロールの把持力不足によるコブル
という座屈現象を生じることが少な（、長時間安定した
摩耗係数を維持ずろことができると共に摩損によって鉄
異物が混入し、品質低下を起こすことのない耐摩耗性を
存するピンチロールの提供を目的とするものである。The present invention has been made in view of the above circumstances, and it is possible to reduce the occurrence of buckling phenomenon called cobble due to insufficient gripping force of the pinch rolls in the wire drawing process (and to maintain a stable wear coefficient for a long period of time). It is also an object of the present invention to provide a pinch roll that has wear resistance that does not cause quality deterioration due to the introduction of foreign iron particles due to wear and tear.
「課題を解決するための手段」
炭素含育屯が、０．２５〜０７０重量％の炭素鋼をロー
ル材料に用い、少なくとも表面がＨＩ（Ｃ５０以上の硬
度に焼き入れされ、表面部分に１０μｍ〜５０μｍの粗
さにショットブラスト処理などによる表面処理が施され
たピンチロールを用いることを、解決するための手段と
した。"Means for Solving the Problem" Carbon steel with a carbon content of 0.25 to 070% by weight is used as a roll material, and at least the surface is quenched to a hardness of HI (C50 or higher), and the surface portion has a thickness of 10 μm to 10 μm. The solution was to use a pinch roll whose surface had been subjected to a surface treatment such as shot blasting to a roughness of 50 μm.
「作用 」
炭素含存量が０．２５〜０．７０重量％の炭素鋼を用い
、表面硬度をＩ（Ｒｃ５０以上としたので、ピンチロー
ル表面凹凸の凸部の摩滅速度が減少し、これに伴うピン
チロール表面の荒引線に対する摩擦係数の低下割合も減
少する。よってピンチロールの荒引線把持ツノの低下が
起こりにくくなりコブルという座屈現象等の不具合を起
こすことがなくなって寿命が伸びる。つまり、ピンチロ
ールの交換までの時間が長くなる。またピンチロールの
表面に１０μｍ以上の粗さの凹凸を形成するショツトブ
ラスト処理などによる表面処理を施しているので、運転
開始時に摩擦力が不足せず銅荒引線等を確実に把持する
ことができる。さらにショツトブラスト処理による表面
凹凸が５０μｍ以下の粗さなので、表面凹凸の凸部の欠
けによる鉄異物の発生が無くなり品質の低下を招かない
。"Effect" Since carbon steel with a carbon content of 0.25 to 0.70% by weight is used, and the surface hardness is set to I (Rc50 or more), the wear rate of the convex portions of the pinch roll surface is reduced, and the accompanying The rate of decrease in the coefficient of friction on the surface of the pinch roll relative to the rough line is also reduced.As a result, the rough line gripping horn of the pinch roll is less likely to deteriorate, and problems such as buckling phenomena called cobbles do not occur, extending the service life.In other words, It takes longer to replace the pinch roll.Also, since the surface of the pinch roll is treated by shot blasting to form unevenness with a roughness of 10 μm or more, there is no lack of frictional force at the start of operation. It is possible to reliably grip rough lines, etc.Furthermore, since the roughness of the surface due to the shot blasting process is 50 μm or less, there is no occurrence of iron foreign matter due to chipping of the convex portions of the surface unevenness, and no deterioration in quality occurs.
以下、本発明のピンチロールについて詳しく説明する。Hereinafter, the pinch roll of the present invention will be explained in detail.
本発明のピンチロールはロール材料として炭木含何量が
０．２５〜０７０重量％の炭素鋼を用い、且つこのピン
チロールの表面硬度が１４ＲＣ５０以北になるように焼
き入れされ、さらにこのピンチロールの表面粗さが１０
μｍ〜５０μｍになるように７ヨツトブラスト処理など
による表面処理が施されたものである。The pinch roll of the present invention uses carbon steel with a charcoal wood content of 0.25 to 0.70% by weight as a roll material, and is hardened so that the surface hardness of the pinch roll becomes 14RC50 or higher. Roll surface roughness is 10
The surface has been subjected to a surface treatment such as 7-shot blasting so that the thickness is 50 μm to 50 μm.
本発明のピンチロールにおいてロール材料として用いら
れている炭素鋼の炭素含有端が０２５重ｑ％未満の場合
は、焼き入れしても硬度が不足であり、０７０重量％を
越えると表面凹凸の凸部の摩滅か速く短時間でピンチロ
ールの表面の摩擦係数が低下しコブルという座屈現象を
起こし易くなる。また表面の焼き入れ硬度がＩ（ＲＣ５
０に満たない場合も、同じく表面の摩滅が速く短時間で
不具合を起こす。ここで、このピンチロール表面の焼き
入れ硬度は、炭素含有型と焼き入れ条件を変えることに
より調整することができる。If the carbon content of the carbon steel used as the roll material in the pinch roll of the present invention is less than 0.25% by weight, the hardness will be insufficient even after quenching, and if it exceeds 0.070% by weight, the surface will have unevenness. The friction coefficient of the pinch roll's surface decreases in a short period of time due to rapid wear and tear, making it more likely to cause a buckling phenomenon called cobble. In addition, the hardness of the surface is I (RC5
If it is less than 0, the surface wears quickly and problems occur in a short period of time. Here, the quenching hardness of the pinch roll surface can be adjusted by changing the carbon-containing type and quenching conditions.
また本発明のピンチロールにおいて、その表面粗さが１
０μｍ未満の場合は、表面の摩擦係数が低くなり荒引線
の把持力か不足し、運転開始時にコブルという座屈現象
を起こし易く、表面粗さが５０μｍを越える場合は表面
凹凸部の凸部が欠損し易くなり、鉄異物が荒引線表面に
混入し、伸線性を低下させる等の問題を引き起こす。こ
の表面粗さの付与は、汎用のショツトブラスト機などに
よって行われ、表面粗さはこのショツトブラスト機のシ
ョット条件を選定することにより調節できる。Furthermore, in the pinch roll of the present invention, the surface roughness is 1
If the surface roughness is less than 0 μm, the friction coefficient of the surface will be low and the gripping force of the rough drawing line will be insufficient, which tends to cause a buckling phenomenon called cobble at the start of operation. If the surface roughness exceeds 50 μm, the convex portion of the surface roughness will It becomes easy to break and causes problems such as iron foreign matter getting mixed into the surface of the rough drawn wire and reducing wire drawability. This surface roughness is imparted using a general-purpose shot blasting machine or the like, and the surface roughness can be adjusted by selecting the shot conditions of this shot blasting machine.
次に、本発明のピンチロールにおいてその寿命をさらに
長くする使用条件について説明する。Next, the usage conditions for further extending the life of the pinch roll of the present invention will be explained.
本発明のピンチロールにあっては、熱間圧延時の冷却及
び脱スケールをｐｌ＋４〜ｐＨ６の媒体の存在下におい
て処理した線材を使用することにより、さらに大幅に寿
命を仲ばずことができる。即ち、弱酸性の媒体を荒引線
の冷却及びスケール除去のための媒体として用い、この
媒体を荒引線に残存させた状態でピンチロールに噛み込
まれるように使用することが好ましい。In the pinch roll of the present invention, by using a wire rod that has been cooled and descaled during hot rolling in the presence of a medium with a pl+4 to pH 6, the life can be significantly shortened. That is, it is preferable to use a weakly acidic medium as a medium for cooling and removing scale from the rough drawing wire, and to use this medium while remaining on the rough drawing wire so that it is bitten by the pinch rolls.
ピンチロールの使用時において、ピンチ口−ルと荒引線
との摩擦により界面温度が上昇しピンチロールの表面は
かなり高い温度となる。ここで、ｐＨ４〜ｐＨ６である
媒体と炭素含有量が０２５〜０．７０重量％である炭素
鋼とがこの高温下において接触することにより、微細な
高温腐食ビットが発生する。この高温腐食ピットが表面
摩擦係数の低下を抑えるため、萌述したようにピンチロ
ールの寿命が長くなるものと推定できる。When the pinch roll is used, the interfacial temperature increases due to friction between the pinch jaw and the rough wire, and the temperature of the surface of the pinch roll becomes quite high. Here, when the medium having a pH of 4 to 6 and the carbon steel having a carbon content of 025 to 0.70% by weight come into contact at this high temperature, fine hot corrosion bits are generated. Since these high-temperature corrosion pits suppress the decrease in the surface friction coefficient, it can be assumed that the life of the pinch roll is extended as mentioned above.
なお、ｐＨ４〜６の約２％イソプロピルアルコールとそ
の分解生成物の水溶液を媒体として圧延材に供給しつつ
本発明のロールを用いて圧延を行うならば、数十時間の
連続運転が可能であった。この点において、５ＫＤＩＩ
のような高合金化された材料からなるロールでは、数時
間の連続運転で使用不能となることがあった。Note that if rolling is carried out using the roll of the present invention while supplying an aqueous solution of about 2% isopropyl alcohol and its decomposition products as a medium to the rolling material, continuous operation for several tens of hours is possible. Ta. In this regard, 5KDII
Rolls made of highly alloyed materials, such as, could become unusable after several hours of continuous operation.
この弱酸性の媒体が付着した荒引線は中和防錆処理を施
された後、巻取機により巻き取られ後工程へ送られる。The rough drawn wire to which this weakly acidic medium has adhered is subjected to neutralization and anti-corrosion treatment, then wound up by a winder and sent to a subsequent process.
「実施例」 本発明の実施例及び比較例を第１表に示す。"Example" Examples and comparative examples of the present invention are shown in Table 1.
第１表に示す実施例、比較例は、銅の連続鋳造圧延にお
ける最終引取ピンチロールに本発明の実施例及び比較例
のピンチロールを用い、その時の各種不具合の発生を示
すものである。The Examples and Comparative Examples shown in Table 1 show the occurrence of various defects when the pinch rolls of the Examples and Comparative Examples of the present invention were used as the final take-off pinch roll in continuous casting and rolling of copper.
第１表中、開始時の不具合とは作業を開始した直後にコ
ブルという座屈現象が発生したか否かを示す。また、連
続運転時間とは、作業を開始してからコブルを発生ずる
までの時間を示し、５時間以上の場合は○、５時間未満
の場合は×とした。In Table 1, the term "failure at the start" indicates whether or not a buckling phenomenon called cobble occurred immediately after starting the work. Further, the continuous operation time refers to the time from the start of work until cobbles occur, and when it is 5 hours or more, it is marked as ○, and when it is less than 5 hours, it is marked as ×.
製品の品質とは、製品である５０μｍの銅線を無断線で
３００ｋｇ伸線可能な場合は０１３００ｋｇ未満の場合
は×とした。Regarding the quality of the product, if the product 50 μm copper wire could be drawn to 300 kg without wire cutting, it was rated as 01, and if it was less than 300 kg, it was rated as ×.
第１表で明らかなように、本発明の実施例は作業開始時
の不具合、連続運転時間、製品の品質のいずれにおいて
も良好な結果であった。As is clear from Table 1, the examples of the present invention had good results in terms of problems at the start of work, continuous operation time, and product quality.
「発明の効果」
本発明のピンチロールは、炭素含有量が０．２５重量％
〜０．７０重量％の炭素鋼をロール材料に用い、且つ焼
き入れ硬度がＩ（ＲＣ５０以上であるので、表面の凹凸
の摩滅が少なく長時間運転が可能である。さらに、ピン
チロール表面に１０μｍ〜５０μｍの粗さにショツトブ
ラストなどによる表面処理を施しであるので、運転開始
時の荒引線把持力が適当でかつ荒引線表面へ鉄異物が埋
め込まれることなく高品質のものを連続処理できる等の
利点がある。従って、本発明のピンチロールを連続鋳造
圧延に用いることにより、ロール組み替え時間を長くす
ることかできるから製品の品質を向上させ、さらには作
業効率及び歩どまりを向上させることのできろ効果が得
られるものである。"Effects of the Invention" The pinch roll of the present invention has a carbon content of 0.25% by weight.
~0.70% by weight carbon steel is used as the roll material, and the quenched hardness is I (RC50 or higher), so long-term operation is possible with less wear on surface irregularities.Furthermore, the pinch roll surface has a 10μm Since the surface is treated with shot blasting to a roughness of ~50 μm, the gripping force for the rough wire at the start of operation is appropriate, and high quality products can be processed continuously without iron foreign matter being embedded in the rough wire surface. Therefore, by using the pinch roll of the present invention in continuous casting and rolling, it is possible to lengthen the roll changeover time, thereby improving product quality, and further improving work efficiency and yield. If you can do it, you can get an effect.
Claims (1)
ール材料に用い、少なくとも表面がＨ＿ＲＣ５０以上の
硬度に焼き入れされ、表面部分に１０μｍ〜５０μｍの
粗さに表面処理が施されていることを特徴とするピンチ
ロール。Carbon steel with a carbon content of 0.25 to 0.70% by weight is used as the roll material, at least the surface is hardened to a hardness of H_RC50 or more, and the surface portion is surface treated to a roughness of 10 μm to 50 μm. A pinch roll characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25266188A JPH0299215A (en) | 1988-10-06 | 1988-10-06 | Pinch roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25266188A JPH0299215A (en) | 1988-10-06 | 1988-10-06 | Pinch roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0299215A true JPH0299215A (en) | 1990-04-11 |
| JPH0585241B2 JPH0585241B2 (en) | 1993-12-06 |
Family
ID=17240466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25266188A Granted JPH0299215A (en) | 1988-10-06 | 1988-10-06 | Pinch roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0299215A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US10746160B2 (en) | 2015-06-30 | 2020-08-18 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| US10871146B2 (en) | 2015-06-30 | 2020-12-22 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| US10907611B2 (en) | 2015-06-30 | 2021-02-02 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| US10928816B2 (en) | 2015-06-30 | 2021-02-23 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| CN112845612A (en) * | 2021-01-05 | 2021-05-28 | 湖南华菱涟源钢铁有限公司 | Control method for eliminating steel sticking at initial stage of pinch roll online |
| US11428208B2 (en) | 2015-06-30 | 2022-08-30 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226503U (en) * | 1975-08-15 | 1977-02-24 |
-
1988
- 1988-10-06 JP JP25266188A patent/JPH0299215A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5226503U (en) * | 1975-08-15 | 1977-02-24 |
Cited By (8)
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| CN107709764A (en) * | 2015-06-30 | 2018-02-16 | 维斯塔斯风力***集团公司 | The method and system arranged for generating wind turbine control |
| US10746160B2 (en) | 2015-06-30 | 2020-08-18 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| US10871146B2 (en) | 2015-06-30 | 2020-12-22 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| US10907611B2 (en) | 2015-06-30 | 2021-02-02 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| US10928816B2 (en) | 2015-06-30 | 2021-02-23 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| US10975844B2 (en) | 2015-06-30 | 2021-04-13 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| US11428208B2 (en) | 2015-06-30 | 2022-08-30 | Vestas Wind Systems A/S | Methods and systems for generating wind turbine control schedules |
| CN112845612A (en) * | 2021-01-05 | 2021-05-28 | 湖南华菱涟源钢铁有限公司 | Control method for eliminating steel sticking at initial stage of pinch roll online |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0585241B2 (en) | 1993-12-06 |
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