JPH038286A - Exciting method for excited roll - Google Patents

Exciting method for excited roll

Info

Publication number
JPH038286A
JPH038286A JP14211189A JP14211189A JPH038286A JP H038286 A JPH038286 A JP H038286A JP 14211189 A JP14211189 A JP 14211189A JP 14211189 A JP14211189 A JP 14211189A JP H038286 A JPH038286 A JP H038286A
Authority
JP
Japan
Prior art keywords
current
roll
contact
power supply
power
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
Application number
JP14211189A
Other languages
Japanese (ja)
Inventor
Yoshiaki Hirota
芳明 広田
Hideya Kuratani
蔵谷 秀也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP14211189A priority Critical patent/JPH038286A/en
Publication of JPH038286A publication Critical patent/JPH038286A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To properly distribute a current on a metal material by bringing an exciting contact piece connected to a power feeder into contact with the outer periphery operating face of an excited roll, and exciting the excited roll. CONSTITUTION:An exciting roller 2 is supported on a conducting shaft 5 supported by an arm 4 installed on a frame 3. A brush 6 is brought into contact with the shaft 5, and the brush 6 is connected to a power feeder via a conducting wire. The exciting roller 2 is kept in contact with the center section of the outer periphery operating face of a roll 1, thus the current C fed from the roller 2 to the roll 1 flows in a divergent shape. A current is induced on a steel plate S, and the steel plate S is heated while it is conveyed. The distribution of the excitation current in the amplitude direction can be easily controlled, and the controllability of temperature distribution can be improved. A product unified with the quality in the width direction can be supplied, the occurrence of a spark due to local concentration can be suppressed, and the current distribution of the steel plate S is made adequate.

Description

【発明の詳細な説明】 (産業上の利用分野) 半導電性の各種金属材の熱処理にあるいはメツキ等に際
して該金属材に回転接触させ通電する通電ロールへの給
電方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a method of supplying power to an energizing roll that rotates and contacts a semiconductive metal material during heat treatment or plating of the material.

(従来の技術) 従来通電ロールへの給電方法としては第4図に示すよう
に通電ロール1の両側のかかみ板11の外側のシャフト
sh部分に電力供給装置7に接続された給電用のブラシ
5を直接又は、リングを介して間接的に接触させ、この
ブラシ、シャフト部を介して通電ロールに給電する方法
が知られている(参考技術 実公昭Go−34024号
)。
(Prior Art) As a conventional method of supplying power to an energizing roll, as shown in FIG. A method is known in which the brushes are contacted directly or indirectly through a ring, and power is supplied to the current-carrying roll through the brush and shaft portion (Reference technique, Utility Model Publication No. 34024).

この従来の通電ロールへの給電方法においては、通常ロ
ールの両側より給電するため、特に広幅の金属材Sにa
電するような場合、投入電流Cがショートバスして電流
が板の両端に集中し、その部分の電流密度が極端に高く
なり、スパークを発生し金属板損傷、電力の損失という
好ましくない現象が生ずるおそれがある。したがって例
えば、金属材の幅の変更に対応して、該金属材における
電流分(Iiを好適に維持することができないし、更に
例えば金属材に対する電流分布を積極的に変え、金属材
における温度分布の制御ができない等、制御性の面で十
分なものとは言いがたい。
In this conventional method of supplying power to a current-carrying roll, power is normally supplied from both sides of the roll, so a
When power is applied, the input current C becomes a short bus and the current concentrates at both ends of the plate, and the current density at that part becomes extremely high, generating sparks, causing undesirable phenomena such as damage to the metal plate and loss of power. There is a risk that this may occur. Therefore, for example, in response to a change in the width of a metal material, it is not possible to properly maintain the current (Ii) in the metal material, and furthermore, for example, if the current distribution to the metal material is actively changed, the temperature distribution in the metal material is It cannot be said that the controllability is sufficient, such as the inability to control.

この通電ロール両側からの給電方法によって均一電流分
布を得るためには、通電ロール内部に電力分配用のブラ
ンチを設けたり、ロールシェルを導電率の異なる複数の
材質によって多層構造とするなどの方法か考えられてい
るか、何れもロールの製作が困難であり、コスト高な方
法である。又この方式の場合、給電点の位置、数などの
変更も、また困難である。
In order to obtain a uniform current distribution by feeding power from both sides of the current-carrying roll, it is possible to provide a branch for power distribution inside the current-carrying roll, or to make the roll shell a multilayer structure made of multiple materials with different conductivities. Both of these methods are difficult to produce rolls and are expensive. Furthermore, in the case of this method, it is also difficult to change the position, number, etc. of the feeding points.

(発明が解決しようとする課題) 本発明は、金属材に通電ロールを介して通電する場合に
おいて、前記の従来の問題点をH利に解消し、金属材に
おける電流分41を好適な分布に制御できる通電ロール
の給電方法を提供するものである。
(Problems to be Solved by the Invention) The present invention advantageously solves the above-mentioned conventional problems when energizing a metal material via a current-carrying roll, and provides a suitable distribution of the current 41 in the metal material. The present invention provides a controllable power supply method for a current-carrying roll.

(課題を解決するための手段) 本発明は、金属材に回転接触させ通電する通電ロールの
外周稼動面に、電力供給装置に接続した給電接触子を当
接し、この給電接触子を介して通電ロールに給電するこ
とを特徴とする通電ロールへの給電方法であり、電力供
給装置に接続した給電接触子を1個または複数個通電ロ
ール外周の稼動面に当接するようにして、必要に応して
その当接位置、当接個数を選択し、通電ロールへの供給
電流分布を制御して金属材における電流分布を任意的に
制御可能にするものであり、これによって金属材、特に
広幅の金属板等に対する均一通電あるいは、局所的通電
を自在とするものである。
(Means for Solving the Problems) The present invention brings a power supply contact connected to a power supply device into contact with the outer circumferential operating surface of a current supply roll that rotates and contacts a metal material to supply current, and conducts current through the power supply contact. This is a method of supplying power to an energized roll, which is characterized by supplying power to the roll, in which one or more power supply contacts connected to a power supply device are brought into contact with the operating surface of the outer periphery of the energized roll, and as needed. It is possible to arbitrarily control the current distribution in metal materials by selecting the contact position and the number of contact points and controlling the current distribution to the current-carrying roll. This allows for uniform or localized energization to be applied to the plate, etc.

以下に本発明を第1図〜第3図に示す実施例に基づいて
説明する。
The present invention will be explained below based on the embodiments shown in FIGS. 1 to 3.

この実施例はトランス型の通電加熱装置によるf#4阪
の通電加熱例を示すものである。
This example shows an example of energization heating of f#4 steel using a transformer type energization heating device.

第1図及び第2図は、本発明を実施する装置例としてト
ランス型の通電加熱装置を概念的に示したものである。
FIGS. 1 and 2 conceptually show a transformer type electrical heating device as an example of a device for carrying out the present invention.

この通電加熱装置においては、搬送過程にある鋼板Sに
接して前後に2対のa電ロール1.1゜。
In this electric heating device, two pairs of electric rolls 1.1° are placed at the front and rear in contact with the steel plate S during the conveyance process.

及び1+、1+。が配設され、この2対の通電ロール間
には鋼板Sの通路10を有する環状のトランス9が配設
されている。
and 1+, 1+. An annular transformer 9 having a passage 10 made of steel plate S is disposed between the two pairs of current-carrying rolls.

本発明のこの実施例においては、各通電ロール1.1o
、tl、tlOの外周稼動面の中央部に、給電接触子と
して夫々導電性の給電ローラー2を当接したところに特
徴がある。
In this embodiment of the invention, each energizing roll 1.1o
, tl, and tlO are characterized in that a conductive power supply roller 2 is brought into contact as a power supply contact at the center of the outer peripheral operating surface of each of them.

各給電ローラー2は、架台3に設置されたアーム4に導
電性のシャフト5が支持され、この導電性シャフト5に
軸支されている。そして通電ロールに接触し、その回転
に伴い、自在に回転する。
A conductive shaft 5 is supported by an arm 4 installed on a pedestal 3, and each power supply roller 2 is pivotally supported by the conductive shaft 5. Then, it comes into contact with the current-carrying roll and rotates freely as the roll rotates.

シャフト5には、ブラシ6が当接され、このブラシ6は
導電性8を介し電力供給装置7に接続されている。
A brush 6 is brought into contact with the shaft 5 , and the brush 6 is connected to a power supply device 7 via a conductor 8 .

鋼板Sを通電加熱する場合は、まず電力供給装置It7
から導電線8、ブラシ6を介して給電ローラー2のシャ
フト5に給電し、このシャフト5.’+1ら給電ローラ
ー2に給電する。そして、この給電ローラー2の外周稼
動面から、通電ロール11o、1+、Loの外周稼動面
に回転接触状、懸で給電される。この際、各通電ロール
の外周稼動面は、搬送中の鋼板S表面に回転接触状聾で
あるから、この各通電ロールから調成Sに通電する。こ
の時、トランス9の作用により2対の通電ロール(1〜
L 、−1o 〜Lo)間のpA仮sに電流を誘起させ
、これによって調成Sを搬送しながら連続的に加熱する
ようになっている。
When heating the steel plate S with electricity, first the power supply device It7
Power is supplied to the shaft 5 of the power supply roller 2 via the conductive wire 8 and the brush 6 from the shaft 5. '+1 supplies power to the power supply roller 2. Then, power is supplied from the outer circumferential operating surface of the power feeding roller 2 to the outer circumferential operating surfaces of the energizing rolls 11o, 1+, and Lo in a rotating contact manner. At this time, since the outer circumferential operating surface of each energizing roll is in rotary contact with the surface of the steel plate S being conveyed, electricity is applied to the preparation S from each energizing roll. At this time, due to the action of the transformer 9, two pairs of current-carrying rolls (1 to
A current is induced in the pA temporary s between L, -1o and Lo, thereby continuously heating the preparation S while being transported.

この実施例においては、給電ローラー2は、通電ロール
lの外周稼動面の中央部において当接しているので、こ
の給電ローラー2から通電ロール1に給電された電流C
は第2図のように末広がり状に流れる。従って鋼板Sに
対する電流分布は、前記従来の場合に比し、均一性ある
Q好な分布を示す。
In this embodiment, the power supply roller 2 is in contact with the power supply roll l at the center of the outer circumferential operating surface, so that the current C supplied from the power supply roller 2 to the power supply roll 1 is
flows in a widening shape as shown in Figure 2. Therefore, the current distribution to the steel plate S exhibits a uniform distribution with a good Q value compared to the conventional case.

通電ロール1に対する給電ローラー2による給電におい
ては、給電ローラー2の通電ロール1への当接の位置に
よって、電流Cの流れの大きさ、方向か微妙に変化する
という現象があり、鋼板Sの位置、寸法、加熱、温度分
布等に応じてこの給電ローラー2の当接位置を調整すれ
ば鋼板Sにおける電流分布を調整することが可能であり
、その意味からこの給電ローラー2を通電ロール1の長
手(軸)方向、円周方向に移動自在にすることは、操業
上有効な手段である。即ち、鋼板Sにおける電流分布の
均一性の維持もでき、又積極的に電流分布を偏在させ、
鋼板Sにおける温度分布を偏在させることもできる。
When power is supplied to the current-carrying roll 1 by the power-carrying roller 2, there is a phenomenon in which the magnitude and direction of the flow of the current C slightly change depending on the position of the contact between the power-carrying roller 2 and the current-carrying roll 1. By adjusting the abutment position of this power supply roller 2 according to dimensions, heating, temperature distribution, etc., it is possible to adjust the current distribution in the steel plate S. From this point of view, it is possible to adjust the current distribution in the steel plate S. Making it movable in the (axial) direction and the circumferential direction is an effective means for operation. That is, the uniformity of the current distribution in the steel plate S can be maintained, and the current distribution can be actively unevenly distributed.
The temperature distribution in the steel plate S can also be unevenly distributed.

第3図は、本発明の他の実施例を概念的に示したちので
ある。
FIG. 3 conceptually shows another embodiment of the invention.

この実施例は、本発明を前記第1の実施例と同様トラン
ス型の通電加熱装置において、第1の実施例より広幅の
鋼板Sの通電加熱に適用したものである。
In this embodiment, the present invention is applied to the current heating of a steel plate S having a wider width than the first embodiment in a transformer-type current heating apparatus similar to the first embodiment.

この通電加熱装置においては、通電ロール1の外周稼動
面に当接する給電接触子としての給電ローラー2を通電
ロール1の長手(軸)方向に複数個並設したところに特
徴がある。本実施例では長手方向に3個の給電ローラー
2a、  2b、2Cを設置した。
This current supply heating device is characterized in that a plurality of power supply rollers 2 are arranged in parallel in the longitudinal (axial) direction of the current supply roll 1 as power supply contacts that come into contact with the outer circumferential operating surface of the current supply roll 1 . In this embodiment, three power supply rollers 2a, 2b, and 2C were installed in the longitudinal direction.

給電ローラー2a、2b、2Cは夫々導電性を有してお
り、架台3に独立して移動自在に支持されたアーム4a
、4b、4cを設け、このアーム4a、4b、4cに支
承されたシャフト5a。
The power supply rollers 2a, 2b, and 2C each have conductivity, and are supported by an arm 4a independently movable on the pedestal 3.
, 4b, 4c, and a shaft 5a supported by the arms 4a, 4b, 4c.

5b  5clこ給電ローラー2a、2b、2cを牛山
支している。そして給電ローラー2a、2b。
5b 5cl supports the power supply rollers 2a, 2b, and 2c. And power supply rollers 2a, 2b.

2cは通電ロール1の回転に伴い回転自在の構造となっ
ている。
2c has a structure that is rotatable as the energizing roll 1 rotates.

シャフト5a、5b、5cには夫々ブラシ6a6b、6
cが当接され、これらのブラシは、夫々導電線8a、8
b、8cにより電力供給制御装置1.1.a、 llb
、 11.cを介して電力供給装置7に接続されており
、ここでは各給電ローラーへの電力供給回路を独立して
制御できるように回路が構成されている。
Brushes 6a, 6b, 6 are provided on the shafts 5a, 5b, 5c, respectively.
c are in contact with each other, and these brushes are connected to conductive wires 8a and 8, respectively.
b, 8c to power supply control device 1.1. a,llb
, 11. It is connected to the power supply device 7 via c, and here the circuit is configured so that the power supply circuit to each power supply roller can be independently controlled.

この実施例においては複数の給電ローラーから通電ロー
ルに給電できるようにしており、この給電ローラーの通
電ロールへの当接位置、各給電ローラーから通電ロール
への供給電力を′:A整することによって通電ロールを
介して鋼板への電流分布を任意に調整することができ、
第1の実施例と同様、鋼板Sにおける電流分布を均一性
の高いものに維持することはもとより、積極的に電流分
布を偏在させ、鋼板Sにおける温度分布をより一層任意
的に調整することができる。即ち、各給電ローラーから
の通電ロールへの供給電力を規則的又は、不規則的に増
減することによって、よりきめ細かい通電加熱制御が可
能である。
In this embodiment, power can be supplied from a plurality of power supply rollers to the current supply roll, and by adjusting the contact position of the power supply rollers to the current supply roll and the power supplied from each power supply roller to the current supply roll ′:A. The current distribution to the steel plate can be adjusted arbitrarily through the energizing roll,
As in the first embodiment, it is possible not only to maintain a highly uniform current distribution in the steel plate S, but also to actively unevenly distribute the current distribution and adjust the temperature distribution in the steel plate S more arbitrarily. can. That is, by regularly or irregularly increasing or decreasing the power supplied from each power supply roller to the current supply roll, more fine-grained current supply heating control is possible.

なお上記実施例はいづれもトランス型の通電加熱装置の
通電ロールへの給電方法として適用しているが、本発明
はこれに限定されるものではなく、他の型の通電加熱装
置の通電ロールへの給電方法としても適用できる。給電
接触子としては給電ローラーに代えて、ブラシ等の摺動
子を用いることも考えられるが、摩耗対策の而から、ロ
ーラータイプの方が好ましいといえる。
Although the above embodiments are all applied as a method of supplying power to the energizing roll of a transformer-type energizing heating device, the present invention is not limited to this, and can be applied to the energizing roll of other types of energizing heating device. It can also be applied as a power supply method. Although it is conceivable to use a slider such as a brush instead of the power supply roller as the power supply contact, a roller type is preferable from the standpoint of wear protection.

更に、通電対象物としては鋼板に限定されるものではな
く、導電性を有する各種材質、形状の金属材にも広く適
用かできる。
Furthermore, the object to be energized is not limited to steel plates, but can also be widely applied to metal materials of various conductive materials and shapes.

(実 施 例) 第3図に示すようなトランス型の通電加熱装置において
本発明を適用した例について以下に説明する。
(Example) An example in which the present invention is applied to a transformer-type electrical heating device as shown in FIG. 3 will be described below.

外径400mm、胴長600mmの鋳鉄製の上下一対の
通電ロールを1.3mの間隔て2組配置し、電力供給装
置からプランを介してシャフト部に給電するようにした
。3個の給電ローラーを前記通電ロールの外周面に、そ
の軸方向に250muピッチで配置し、この給電ローラ
ーを介して通電ロールに通電するようにした。通板材と
しては、幅400mm。
Two pairs of upper and lower current-carrying rolls made of cast iron having an outer diameter of 400 mm and a body length of 600 mm were arranged at an interval of 1.3 m, and power was supplied to the shaft portion from a power supply device via a plan. Three power supply rollers were arranged on the outer peripheral surface of the current supply roll at a pitch of 250 mu in the axial direction, and electricity was applied to the current supply roll through the power supply rollers. Width 400mm for threading material.

0.2■厚のリムド鋼板(0,06%炭素)を使用し通
板速度を50+n/winとした。通電条件は、GOI
IZの商用周波数電源にて電流二を6000Aとした。
A 0.2-inch thick rimmed steel plate (0.06% carbon) was used, and the plate threading speed was set to 50+n/win. The energizing conditions are GOI
The current was set to 6000A using the IZ commercial frequency power supply.

このような条件でm、tの通電加熱を行ったところ、鋼
板と通電ロール間でスパークの発生はなく、鋼板の全幅
に亘って750〜760℃の範囲の均一性の良好な温度
分布が得られた。これに対して、第4図に示すような従
来の給電方式による場合は、鋼板端部付近で通電ロール
との間にスパークの発生が認められ、鋼板にスパーク疵
の発生が散見された。
When electrical heating was performed for m and t under these conditions, no sparks were generated between the steel plate and the current-carrying roll, and a well-uniform temperature distribution in the range of 750 to 760°C was obtained over the entire width of the steel plate. It was done. On the other hand, in the case of the conventional power feeding method as shown in FIG. 4, sparks were observed to occur near the ends of the steel plate between the steel plate and the current-carrying roll, and spark defects were occasionally observed on the steel plate.

また温度分布は本発明の場合に比し、格段に分布幅が大
きかった。
Furthermore, the temperature distribution had a much wider width than in the case of the present invention.

(発明の効果) 以上のように本発明による通電ロールへの給電方法は、
阪幅方向での通電電流の分布を比較的容易に制御するこ
とができると共に、温度分布の制御性も高め得るので、
幅方向の性質が均一化された製品を供給することが可能
であり、また通電電流の局所集中によるスパークの発生
の抑制もできるので、スパーク疵のない製品を供給でき
る。
(Effects of the Invention) As described above, the method of supplying power to the energizing roll according to the present invention is as follows:
It is possible to relatively easily control the distribution of the current flowing in the direction of the slope, and the controllability of the temperature distribution can also be improved.
It is possible to supply products with uniform properties in the width direction, and it is also possible to suppress the generation of sparks due to local concentration of current, so products without spark defects can be supplied.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明を実施する装置例の概念説明図、第2図
は第1図■−■矢視説明図、第3図は本発明を実施する
装置例の他の例を示す概念説明図、第4図は従来例を不
す概念説明図である。 1、通電ロール 2.給電ローラー 3.架 台4、ア
ーム   5.シャフト   6.ブラシ電力供給装置 トランス  10゜ 鋼板通路 電力供給制御装置 復代理人
FIG. 1 is a conceptual explanatory diagram of an example of an apparatus for implementing the present invention, FIG. 2 is an explanatory view from the ■-■ arrow in FIG. 1, and FIG. 3 is a conceptual explanatory diagram showing another example of an apparatus for implementing the present invention. 4 are conceptual explanatory diagrams different from the conventional example. 1. Electric roll 2. Power supply roller 3. Frame 4, arm 5. Shaft 6. Brush power supply device transformer 10゜steel plate passage power supply control device sub-agent

Claims (1)

【特許請求の範囲】 1、金属材に回転接触させ、通電する通電ロールの外周
稼動面に、電力供給装置に接続した給電接触子を当接し
、この給電接触子を介して通電ロールに給電することを
特徴とする、通電ロールへの給電方法。 2、通電ロールの外周稼動面に当接される給電接触子が
通電ロールの外周稼動面に沿って移動自在であることを
特徴とする特許請求の範囲第1項記載の通電ロールへの
通電方法。3、通電ロールの外周稼動面に当接される給
電接触子を複数個配設したことを特徴とする特許請求の
範囲第1または2項記載の通電ロールへの通電方法。 4、通電ロールの外周稼動面に当接される給電接触子を
複数個配設し、各給電接触子に供給される電流を調整す
ることによって通電ロールにおける電流分布を調整可能
としたことを特徴とする特許請求の範囲第3項記載の通
電ロールの給電方法。
[Claims] 1. A power supply contact connected to a power supply device is brought into contact with the outer circumferential operating surface of a current-carrying roll that is brought into rotational contact with a metal material and energized, and power is supplied to the current-carrying roll through this power supply contact. A method of supplying power to an energizing roll, characterized by: 2. A method for energizing an energizing roll according to claim 1, characterized in that the power supply contact that comes into contact with the outer circumferential operating surface of the energizing roll is movable along the outer periphery operating surface of the energizing roll. . 3. A method for energizing a current-carrying roll according to claim 1 or 2, characterized in that a plurality of power-feeding contacts are disposed in contact with the outer peripheral operating surface of the current-carrying roll. 4. The current distribution in the current supply roll can be adjusted by arranging a plurality of power supply contacts that come into contact with the outer peripheral operating surface of the current supply roll and adjusting the current supplied to each power supply contact. A method for feeding power to a current-carrying roll according to claim 3.
JP14211189A 1989-06-06 1989-06-06 Exciting method for excited roll Pending JPH038286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14211189A JPH038286A (en) 1989-06-06 1989-06-06 Exciting method for excited roll

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14211189A JPH038286A (en) 1989-06-06 1989-06-06 Exciting method for excited roll

Publications (1)

Publication Number Publication Date
JPH038286A true JPH038286A (en) 1991-01-16

Family

ID=15307675

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14211189A Pending JPH038286A (en) 1989-06-06 1989-06-06 Exciting method for excited roll

Country Status (1)

Country Link
JP (1) JPH038286A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536467A (en) * 1991-07-30 1993-02-12 Nippon Steel Corp Electric heating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536467A (en) * 1991-07-30 1993-02-12 Nippon Steel Corp Electric heating device

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