JP2989541B2 - Rolling method of copper and copper base alloy - Google Patents
Rolling method of copper and copper base alloyInfo
- Publication number
- JP2989541B2 JP2989541B2 JP8097305A JP9730596A JP2989541B2 JP 2989541 B2 JP2989541 B2 JP 2989541B2 JP 8097305 A JP8097305 A JP 8097305A JP 9730596 A JP9730596 A JP 9730596A JP 2989541 B2 JP2989541 B2 JP 2989541B2
- Authority
- JP
- Japan
- Prior art keywords
- copper
- rolling
- slab
- rolled
- hot
- 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 - Fee Related
Links
Landscapes
- Metal Rolling (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、銅及び銅基合金の
スラブ鋳片の熱間圧延方法に関するものであり、特には
軟質で表面切削工程での切削性が良くない銅及び銅基合
金のスラブ鋳片を圧延加工する際に該スラブを所定の板
厚まで熱間圧延した後、圧延テーブル上で常温まで冷却
し、さらに同一圧延機において、目標の板厚まで冷間圧
延をして、表面切削工程での切削性を向上させることを
特徴とする銅及び銅基合金の圧延方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot rolling method for slab cast slabs of copper and copper-based alloys. After hot rolling the slab to a predetermined thickness when rolling the slab slab, the slab is cooled to room temperature on a rolling table, and further cold-rolled to the target thickness in the same rolling mill, The present invention relates to a method for rolling copper and a copper-based alloy, which is characterized by improving machinability in a surface cutting step.
【０００２】[0002]
【従来の技術】銅及び銅基合金の熱間圧延は、鋳造され
たスラブ及びブルームを所定温度に加熱することにより
材料の変形抵抗を小さくし、短時間に２個のロールに大
きな力を加えながら、ロール間にスラブ及びブルームを
通過させることにより所定の板厚に加工するものであ
る。熱間圧延機には、１組のロールを中心に往復して圧
延を行うリバースミルと複数組のロールを用いた、一方
向に圧延を行うタンデムミルに分類される。銅及び銅基
合金では熱間圧延中に板表面に緻密な酸化スケールや表
面欠陥を生じるため、熱間圧延後に表面から０．３ｍｍ
〜０．８ｍｍの範囲を切削して、酸化スケール及び表面
欠陥を除去する必要がある。2. Description of the Related Art In hot rolling of copper and copper-base alloys, deformation resistance of a material is reduced by heating a cast slab and bloom to a predetermined temperature, and a large force is applied to two rolls in a short time. Meanwhile, the slab and the bloom are passed between the rolls so as to be processed to a predetermined thickness. Hot rolling mills are classified into a reverse mill that rolls back and forth about a set of rolls and a tandem mill that rolls in one direction using a plurality of rolls. Since copper and copper-based alloys cause dense oxide scale and surface defects on the sheet surface during hot rolling, 0.3 mm from the surface after hot rolling
It is necessary to cut a range of ０．８0.8 mm to remove oxide scale and surface defects.
【０００３】一方、熱間圧延後の板の切削は、ハイス及
び超硬合金を用いたねじれ刃平フライスカッターで切削
を行う。圧延後の切削に用いられるカッターは、幅の広
い板の表面を高能率に切削することが要求されるため、
幅・径ともに大型であり、例えばカッター幅８００〜１
６００ｍｍ、外径２００〜３００ｍｍの寸法が一般的で
ある。銅及び銅基合金、特に純銅等の軟質材では、切り
屑が刃先に溶着し、仕上げ面を損ねたり、構成刃先を生
成し、仕上げ面がむしれ、安定した表面品質を供給でき
ない。この場合、切削による欠陥を防止するため、切削
速度を変更したり、切削工具の材質を変更する工夫が一
般的にとられている。[0003] On the other hand, the plate after hot rolling is cut with a twisted-blade flat milling cutter using high-speed steel and cemented carbide. Since the cutter used for cutting after rolling is required to cut the surface of a wide plate with high efficiency,
Both width and diameter are large, for example, cutter width 800-1
A dimension of 600 mm and an outer diameter of 200 to 300 mm is common. In soft materials such as copper and copper-based alloys, especially pure copper, chips are welded to the cutting edge, damaging the finished surface or forming a constituent cutting edge, the finished surface is peeled, and stable surface quality cannot be supplied. In this case, in order to prevent a defect due to cutting, a device for changing the cutting speed or changing the material of the cutting tool is generally adopted.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、切削速
度の変更は大規模な設備改造を必要としたり、また、生
産性を著しく悪化させる問題点があり、さらに切削工具
の変更は工具寿命を著しく短くさせる等の問題点があっ
た。However, a change in cutting speed requires a large-scale equipment remodeling and a problem that productivity is remarkably deteriorated. Further, changing a cutting tool significantly shortens a tool life. There was a problem such as making it.
【０００５】本発明は、上記事情に鑑みてなされたもの
であり、軟質で表面切削工程での切削性が良くない銅及
び銅基合金のスラブ鋳片を圧延加工する際に表面切削工
程での切削性を向上させることを課題とするものであ
る。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is intended for rolling a slab slab of copper or a copper-based alloy which is soft and has poor machinability in the surface cutting step. It is an object to improve the machinability.
【０００６】[0006]
【課題を解決するための手段】本発明者は上記の目的を
達成するために鋭意研究を重ねた。その結果、銅及び銅
基合金を熱間圧延後の表面切削工程で切削性を向上させ
るためには、表面切削前に銅及び銅基合金の硬さを上げ
る必要性を見い出し、硬さを上げるためには銅及び銅基
合金のスラブ鋳片を圧延加工する際に該スラブを所定の
板厚まで熱間圧延した後、熱間圧延テーブル上で冷却を
行い、同一圧延機で目標厚さまで冷間圧延を行うことに
より、銅及び銅基合金の切削性が向上することを知見
し、本発明をなすに至った。Means for Solving the Problems The present inventor has made intensive studies to achieve the above object. As a result, in order to improve the machinability in the surface cutting step after hot rolling of copper and copper-based alloy, it is necessary to increase the hardness of copper and copper-based alloy before surface cutting, and to increase the hardness Therefore, when rolling a slab slab of copper and a copper-based alloy, the slab is hot-rolled to a predetermined thickness, then cooled on a hot-rolling table, and cooled to the target thickness by the same rolling mill. The present inventors have found that cutting properties of copper and a copper-based alloy are improved by performing cold rolling, and have accomplished the present invention.
【０００７】すなわち、本発明に係る銅及び銅基合金の
圧延方法は、軟質で表面切削工程での切削性が良くない
銅及び銅基合金のスラブ鋳片を圧延加工する際に該スラ
ブを所定の板厚まで熱間圧延した後、圧延テーブル上で
常温まで冷却し、さらに同一圧延機において、所定の板
厚まで冷間圧延をして、表面切削工程での切削性を向上
させることを特徴とするものである。[0007] That is, the method for rolling copper and copper-based alloy according to the present invention is characterized in that a slab of copper and copper-based alloy which is soft and has poor machinability in the surface cutting process is rolled to a predetermined value. After hot rolling to a sheet thickness of, it is cooled to room temperature on a rolling table, and further cold-rolled to a predetermined sheet thickness in the same rolling mill to improve the machinability in the surface cutting process. It is assumed that.
【０００８】[0008]
【発明の実施の形態】次に、本発明の作用について説明
する。本発明において、熱間圧延後に冷間圧延する理由
は、表面切削工程の切削性を向上させるためである。こ
の意味から、本発明において熱間圧延後の冷間圧延で
は、硬さを１００ＨＶ以上にすることが望ましい。しか
しながら、硬さが大きくなると、切削抵抗が大きくな
り、また工具摩耗が激しくなることから、その上限は３
００ＨＶが望ましい。また、熱間圧延後に同一の圧延機
で冷間圧延する理由は、銅及び銅基合金条の製造工程を
増やすことなく、低コストで製造するためである。Next, the operation of the present invention will be described. In the present invention, the reason for performing cold rolling after hot rolling is to improve the machinability in the surface cutting step. In this sense, in the present invention, in cold rolling after hot rolling, the hardness is desirably 100 HV or more. However, as the hardness increases, the cutting resistance increases, and the tool wear becomes severe.
00HV is desirable. The reason why cold rolling is performed by the same rolling mill after hot rolling is to produce copper and copper-based alloy strips at low cost without increasing the number of manufacturing steps.
【０００９】本発明は、タフピッチ銅のような比較的軟
質の銅及び銅合金を対象とするが、銅及び銅基合金の成
分、及びその配合比率の範囲を限定するものではない。
また、スラブ寸法、加熱温度、熱間圧延加工条件、冷却
方法、冷間圧延加工条件、及び表面切削条件は一実施例
に過ぎず、スラブ寸法、加熱温度、熱間圧延加工履歴、
冷却方法、冷間圧延加工条件の範囲を限定するものでは
ない。Although the present invention is directed to relatively soft copper and copper alloys such as tough pitch copper, the present invention does not limit the components of copper and copper-based alloys, and the range of their blending ratios.
In addition, slab dimensions, heating temperature, hot rolling processing conditions, cooling method, cold rolling processing conditions, and surface cutting conditions are only one example, slab dimensions, heating temperature, hot rolling processing history,
The cooling method and the range of the cold rolling processing conditions are not limited.
【００１０】[0010]
【実施例】次に、本発明に係る実施例及び比較例につい
て説明する。本実施例においては、垂直型連続鋳造機で
鋳造された、酸素を０．０３％含有するタフピッチ銅の
スラブを用いて、熱間圧延及び表面切削を行った。Next, examples and comparative examples according to the present invention will be described. In this example, hot rolling and surface cutting were performed using a tough pitch copper slab containing 0.03% oxygen, which was cast by a vertical continuous casting machine.
【００１１】本発明の効果を明らかにするため次の実験
を行った。垂直型連続鋳造炉で鋳造された厚さ１８０ｍ
ｍのタフピッチ銅のスラブを連続加熱炉により８００℃
まで加熱し、熱間圧延機で厚さ１５ｍｍまで熱間圧延を
行った後、該熱間圧延機テーブル上で常温まで冷却し、
さらに該熱間圧延機において８ｍｍまで冷間圧延を行っ
た。該タフピッチ銅を表面切削工程で０．４ｍｍの切削
を行い、切削後の表面欠陥の観察を行った。The following experiment was conducted to clarify the effect of the present invention. 180m thickness cast in vertical continuous casting furnace
m tough pitch copper slab in continuous heating furnace at 800 ° C
After hot rolling to a thickness of 15 mm with a hot rolling mill, cooled to room temperature on the hot rolling mill table,
Further, cold rolling was performed to 8 mm in the hot rolling mill. The tough pitch copper was cut by 0.4 mm in a surface cutting step, and surface defects after cutting were observed.
【００１２】また、比較例として垂直型連続鋳造炉で鋳
造された厚さ１８０ｍｍのタフピッチ銅のスラブを連続
加熱炉により８００℃まで加熱し、熱間圧延機で厚さ８
ｍｍまで熱間圧延を行い、表面切削工程で０．４ｍｍの
切削を行い、切削後の表面欠陥の観察を行った。As a comparative example, a 180 mm thick tough pitch copper slab cast in a vertical continuous casting furnace was heated to 800 ° C. in a continuous heating furnace, and was heated to a thickness of 8 mm in a hot rolling mill.
mm was hot-rolled, and 0.4 mm was cut in a surface cutting step, and surface defects after cutting were observed.
【００１３】本発明の結果、表面切削ラインで観察され
た表面欠陥の個数を比較例とともに表１に示した。その
結果は、表１から明らかなように、従来の熱間圧延のみ
の材料に比べ、熱間圧延機で所定の板厚まで熱間圧延を
行い、同一圧延機で冷却及び冷間圧延を行った材料は、
表面切削後の表面欠陥が減少した。As a result of the present invention, the number of surface defects observed on the surface cutting line is shown in Table 1 together with Comparative Examples. As is clear from Table 1, as compared with the conventional hot-rolling only material, hot rolling is performed to a predetermined thickness by a hot rolling mill, and cooling and cold rolling are performed by the same rolling mill. Material
Surface defects after surface cutting decreased.
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【発明の効果】以上説明した本発明によれば、軟質で表
面切削工程での切削性が良くない銅及び銅基合金のスラ
ブ鋳片を圧延加工する際に該スラブを所定の板厚まで熱
間圧延した後、圧延テーブル上で常温まで冷却し、さら
に同一圧延機において、所定の板厚まで冷間圧延をし
て、表面切削工程での切削性を向上させることにより、
表面切削時の表面欠陥を減少することができる。According to the present invention described above, when rolling a slab slab of copper or a copper-based alloy which is soft and has poor machinability in the surface cutting step, the slab is heated to a predetermined thickness. After cold rolling, it is cooled to room temperature on a rolling table, and further cold-rolled to a predetermined thickness in the same rolling mill, thereby improving the machinability in the surface cutting process,
Surface defects during surface cutting can be reduced.
Claims (3)
い銅及び銅基合金のスラブ鋳片を圧延加工する際に該ス
ラブを所定の板厚まで熱間圧延した後、圧延テーブル上
で常温まで冷却し、さらに同一圧延機において、目標の
板厚まで冷間圧延をして、表面切削工程での切削性を向
上させることを特徴とする銅及び銅基合金の圧延方法。When a slab slab of copper and a copper-based alloy, which is soft and has poor machinability in a surface cutting step, is rolled, the slab is hot-rolled to a predetermined thickness and then rolled on a rolling table. A method for rolling copper and copper-base alloys, comprising cooling to room temperature, and further performing cold rolling to a target thickness in the same rolling mill to improve machinability in a surface cutting step.
い銅及び銅基合金のスラブ鋳片を圧延加工する際に該ス
ラブを所定の板厚まで熱間圧延した後、圧延テーブル上
で常温まで冷却し、さらに同一圧延機において、目標の
板厚まで冷間圧延をして表面硬度を高め、その後カッタ
ーで表面切削を行うことを特徴とする銅及び銅基合金の
製造方法。2. When rolling a slab slab of copper and a copper-based alloy that is soft and has poor machinability in the surface cutting step, the slab is hot-rolled to a predetermined thickness and then rolled on a rolling table. A method for producing copper and a copper-based alloy, comprising cooling to room temperature, further cold rolling to a target thickness in the same rolling mill to increase the surface hardness, and then cutting the surface with a cutter.
ＨＶ〜３００ＨＶに調整する請求項１乃至２の方法。3. Cold rolling after hot rolling, with a hardness of 100
3. The method according to claim 1, wherein the pressure is adjusted to HV to 300 HV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8097305A JP2989541B2 (en) | 1996-03-28 | 1996-03-28 | Rolling method of copper and copper base alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8097305A JP2989541B2 (en) | 1996-03-28 | 1996-03-28 | Rolling method of copper and copper base alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09262604A JPH09262604A (en) | 1997-10-07 |
| JP2989541B2 true JP2989541B2 (en) | 1999-12-13 |
Family
ID=14188784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8097305A Expired - Fee Related JP2989541B2 (en) | 1996-03-28 | 1996-03-28 | Rolling method of copper and copper base alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2989541B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019241512A1 (en) * | 2018-06-13 | 2019-12-19 | Novelis Inc. | Hybrid rolling mill |
-
1996
- 1996-03-28 JP JP8097305A patent/JP2989541B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09262604A (en) | 1997-10-07 |
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