JPH05315051A - Energization processing device - Google Patents

Abstract

(57) [Abstract] [Purpose] In the current-carrying device in the device for electrically treating metal such as induction heating, arc descaling, etc., the arrangement is changed from the surface of the conventional material to be processed to the end face. A roll, plate or the like is used as the member. In order to ensure stable energization, the contact pressure of the current-carrying end member with respect to the material to be processed is detected, and the current-carrying end member is driven in the horizontal direction so as to keep it constant. Further, the current-carrying end member is driven in the vertical direction to update the contact surface. [Effect] It is possible to efficiently continue stable energization for a long time without impairing the surface quality of the material to be treated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to treatments such as direct current heating, induction heating, vacuum deposition, vacuum arc descaling, etc. by energizing a conductive material such as a metal strip, sheet or bar, or slab. The present invention relates to an energization processing device for performing.

[0002]

2. Description of the Related Art A conventional energization processing apparatus, such as an energization heating apparatus, an induction heating apparatus, a vacuum vapor deposition apparatus, a vacuum arc descaling apparatus, for energizing a material to be processed is shown in FIG. As shown in FIG. 8, the conductor roll 2 is in contact with the surface of the material to be treated 1 to secure a stable energization and discharge state by taking a large energization contact area with the material to be treated (hereinafter referred to as the material to be treated) 1. It was always said that.

In the electric heating device shown in FIG. 5, an AC power source 4 is used.
When p applies an alternating current to the electric coil 4s, a magnetic flux that circulates around the material 1 to be processed and in which the direction is alternately reversed flows in the core 4c, and this current flows to the material 1 to be processed and the direction thereof is alternately reversed in the longitudinal direction. Induce. This induced current flows through the loop bar 18 via the conductor roll 2 connected to the material 1 to be processed, whereby the material 1 to be processed becomes hot due to the heat generated by the jule. The loop bar 18 and the material to be processed 1 are secondary current loops that orbit the core 4c via the conductor rolls 2.
Forming a lump.

In the combination of a vacuum arc descaling device and vacuum deposition equipment shown in FIG. 6, in the vacuum chamber 19, the surface to be processed of the material 1 to be processed is first surface-treated by the vacuum arc descaling device using the electrode 4. Then, in the vapor deposition chamber 20, a coating material is vapor-deposited on the surface-treated surface. The conductor roll 2 contacts the material 1 to be processed and connects the material 1 to be processed to a negative electrode (earth).

FIG. 7 shows a vacuum arc descaling device for descaling the front and back surfaces of the material 1 to be processed in multiple stages. The conductor roll 2 comes into contact with the material 1 to be processed with a certain pressure by the repulsive force of the compression coil spring, and connects the material 1 to be processed to the negative electrode (earth). 4s
Is an electric coil for generating a magnetic field for controlling the behavior of the arc spot.

In the vacuum arc descaling apparatus shown in FIG. 8, the front surface and the back surface of the material 1 to be processed are sequentially descaled by two sets of electrodes (4) arranged vertically.

[0007]

In the conventional apparatus, since the surface of the material to be treated and the conductor roll 2 are in direct contact with each other, a minute gap caused by wear of the conductor roll 2 or vibration during continuous feeding of the material to be treated. And so on
It becomes impossible to secure stable energization (Fig. 5) or discharge (Figs. 6 to 8), or sparks generated between the conductor roll 2 and the surface of the material 1 to be treated through the gap,
The surface of the material to be treated 1 is rough and directly deteriorates the surface quality.
Alternatively, the surface roughness that has become excessive due to the progress of wear of the conductor roll 2 and the traces of foreign matter adhering to the surface of the roll 2 are printed on the surface of the material 1 to be processed, which causes indirect deterioration of the surface quality. there were.

In order to deal with this, expensive wear-resistant and heat-resistant rolls are used, and wear-resistant and heat-resistant rolls whose surface is subjected to surface treatment such as thermal spraying or hard facing are used. Nevertheless, after the material 1 to be treated has been treated to some extent, deterioration of the surface quality of the material 1 to be treated is unavoidable, and the conductor rolls 2 must be replaced by stopping the treatment.

In particular, in the surface treatment of metal in vacuum arc descaling or the like, arc spots fly on the surface of the material 1 to be descaled,
Since the conductor roll 2 melts instantaneously, if the conductor roll 2 is too close to the electrode (anode) 4e facing the material to be processed 1, the material to be processed 1 will melt when the feeding speed of the material to be processed 1 is high. The material or the semi-molten material adheres to the conductor roll 2 and is printed from the conductor roll 2 to directly deteriorate the surface quality of the material 1 to be processed, and also to indirectly cover the conductor roll 2 with foreign matter. The surface quality of the treated material sometimes deteriorated continuously. In the multi-stage vacuum arc descaling in which the same surface is sequentially descaled as shown in FIG. 7, the deterioration of the surface quality of the material 1 to be processed in the upstream makes the descaling discharge in the downstream unstable. Further, there is a problem that the quality of surface processing is deteriorated.

An object of the present invention is to improve such conventional problems, that is, to secure high surface quality of a material to be treated for a long time.

[0011]

SUMMARY OF THE INVENTION The present invention is a current-carrying end member that comes into contact with an end surface of a conductive material to be processed, that is, a material to be processed 1.
Use (3,8). That is, the current-carrying end members (3, 8) such as the roll (3) and the plate (8) are brought into contact with the end surface of the workpiece 1 that is not directly related to the surface quality. The symbols in parentheses indicate the corresponding elements in the embodiments shown in the drawings.

[0012]

[Function] Since the current-carrying end member (3, 8) does not come into contact with the surface of the material (1) to be processed, the surface roughness of the current-carrying end member (3, 8) and the surface of the material (1) to be processed due to adhered foreign matter Quality will not be lost.

[0013]

1 is a schematic plan view of a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. In the first embodiment, the material 1 to be processed is fed in the direction of arrow 1A. Reference numeral 3 is a conductor roller which is a current-carrying end member, and 4 is a primary coil (in the case corresponding to FIG. 5) or an electrode (in the case corresponding to FIGS. 6 to 8). In the conventional energizing device, the conductor roll
As shown in FIGS. 5 to 8, the la 2 is arranged horizontally so that the peripheral surface thereof contacts the surface or the lower surface of the material to be treated 1, but in the present invention, the la 2 is shown in FIGS. Considerable A
As shown in the (-A line cross section), the conductor roller 3 is
It is arranged vertically so that its peripheral surface comes into contact with the end surface of the material 1 to be processed.

A nut 7 is screwed on a roller shaft for rotatably supporting the roller 3, and the nut 7 is rotatably fixed to the nut base 7B in the vertical direction. A rotation drive device (not shown) attached to the nut base 7B drives the nut 7 to rotate. As a result, when the nut rotates forward, the roller shaft (roller 3) moves upward, and when it rotates backward, it moves downward. Nut base 7
B is supported by a roll base 5 so as to be movable in a horizontal direction 3A, and a shock absorber 6 is provided between the roll base 5 and the nut base 7B.
(Compression coil spring or air-cylinder) is inserted. The shock absorber 6 constantly pushes the nut base 7B (roll 3) against the roll base 5 in the right direction (the direction in which the roll 3 is pressed against the workpiece 1). The contact pressure detector 10 detects this pressing force. The roll base 5 is driven by the pressing device 9 in the horizontal direction 3A. The detected pressure of the contact pressure detector 10 is given to the computer 12 via the converter 11.
On the other hand, a photographed image of the contact portion between the roll 3 and the material 1 to be processed of the ITV 15 equipped with a rotating device is given to the computer 12. The calculator 12 retracts the pressing device 9 when the detected pressure of the contact pressure detector 10 becomes a predetermined value and is high corresponding to the detected pressure (direction in which the roll 3 separates from the workpiece 1). ), And if it is low, the forward direction (roll 3 to the processed material 1
Drive in the direction of pressing. The calculator 12 also
The spark behavior of the contact portion of the contact portion of the TV 3 with the roll 3 and the material 1 to be processed is monitored, and when the number and size of the sparks deviate from the set range, the nut base 7B is mounted. The rotation driving device (not shown) is rotated by a predetermined amount to rotate the nut 7 to move the roller 3 upward by a predetermined amount. Such control by the computer 12 is performed via the controller 13.

The conductor roller 3 wears due to contact friction and sparks as the amount of the material 1 to be processed increases.
When these are worn, a good contact state with the material to be treated 1 cannot be ensured and good electricity cannot be supplied, and there is a possibility that the quality may be adversely affected by the loss of electricity due to power loss or poor contact. Therefore, in the first embodiment, a relatively large conductor roller 2 is used to increase the contact area.
As described above, the roller 3 is moved in the up-and-down direction 3B in response to the change in the spark behavior due to the progress of wear, and the portion in contact with the workpiece 1 is changed, so that the surface texture of the conductor roller 3 is constantly limited. I try to keep the following conditions. This can be easily performed even during the processing of the material 1 to be processed, and stable processing and operation can be performed for a long time. Further, since the roller 3 is driven in the horizontal direction 3A so that the pressure detected by the contact pressure detector 10 becomes constant, the contact pressure between the material 1 to be processed and the conductor roller 3 is kept constant and sparks or the like occur. Is suppressed, and stable energization can be obtained. As described above, by disposing the current-carrying end member 3 of the current-carrying device on the end surface of the material 1 to be processed, stable power supply can be obtained without adversely affecting the surface quality of the material 1 to be processed. When the computer 12 detects that the spark behavior has deteriorated, an alarm is issued, and the roller 3 is driven in the up-and-down direction 3B.
The computer may be manually operated (input operation) through the computer 12.

FIG. 3 shows a second embodiment. In this embodiment, the current-carrying end member is the current-carrying plate 8. That is, this is an example in which the conductor roller 3 is replaced with a pressing type energizing plate 8. The energizing plate 8 is pressed against the material 1 to be processed by the pressing device 9. The pressing device 9 is
In addition to a drive device that pushes and drives the energizing plate 8, it is possible to follow vibration and lateral vibration caused by the feeding of the material 1 to be processed with a constant contact pressure using hydraulic pressure or a screw and a spring. ing. Also, the pressing device 9
Is mounted on a follower (not shown) that can reciprocate in the moving direction 1A of the material 1 to be processed, and the follower is reciprocally driven by a drive device (not shown). A calculator (not shown) divides a plurality of energizing plates into a plurality of groups, presses one group against the material 1 to be processed, and drives the material 1 in the direction at substantially the same speed as the material 1 to be processed, Other group to be treated 1
The rocking control of the group division is performed, which is driven away from and returns in the opposite direction. That is, the material 1 is pressed in the horizontal direction 8A and is simultaneously swung in the same direction as the feeding direction 1A of the material 1 to be processed. In this way, by disposing the current-carrying end member 8 of the current-carrying device on the end surface of the material 1 to be processed, stable power supply can be obtained without adversely affecting the surface quality of the material 1 to be processed.

By the way, when the current-carrying end members (3, 8) of the current-carrying device are arranged on the end faces as in the present invention, stable current-carrying is achieved when the material 1 to be processed, such as a slab or a plate, is relatively thick. The required contact area can be taken, but when the plate thickness becomes thin, not only a sufficient contact area cannot be taken, but also the wear of the current-carrying end members (3, 8) due to the knife edge effect of the end surface of the material 1 to be processed. Is considered to progress extremely.
Therefore, in the third embodiment shown in FIG. 4, a large number of needle conductor rollers 16 having a relatively small diameter are used. 4A is a plan view, and FIG. 4B is a sectional view taken along line BB of FIG. The needle conductor-roller 16 prevents the material 1 to be processed from biting into the roller 16 due to the knife edge effect of the end surface of the material 1 to be processed and the progress of remarkable wear. It has a tilted structure. Depending on the case, in the induction heating device of FIG. 1, etc., the low-temperature side (upstream side) energizing end members (3, 8) are arranged on the surface of the material 1 to be treated as in the conventional case, and the high-temperature side (downstream side).
The current-carrying end members (3, 8) may be arranged so as to be arranged on the end surface of the material 1 to be processed.

[0018]

As described above, according to the present invention, it is possible to efficiently continue the stable energization treatment for a long time without impairing the surface quality of the material 1 to be treated.

[Brief description of drawings]

FIG. 1 is a plan view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a plan view of a second embodiment of the present invention.

FIG. 4 is a view showing a third embodiment of the present invention,
(A) is a top view, (b) is a BB line sectional view.

FIG. 5 is a perspective view showing an appearance of a conventional induction heating device.

FIG. 6 is a sectional view showing a combination of a conventional vacuum descaling device and a vacuum vapor deposition device.

FIG. 7 is a sectional view showing one of conventional vacuum descaling devices.

FIG. 8 is a cross-sectional view showing another conventional vacuum descaling device.

[Explanation of symbols]

 3: Conductor roller (energization end member) 8: Energization plate (energization end member) 16: Needle conductor roller (energization end member)

Claims (3)

[Claims] 1. A current-carrying processing device for conducting current to a conductive material to be processed such as a strip plate, a sheet, a bar, a slab, etc., wherein a current-carrying end member is in contact with an end surface of the conductive material. An electric power processing device. 2. The energization processing apparatus according to claim 1, wherein the energization end member is a conductor roll. 3. The energization processing apparatus according to claim 1, wherein the energization end member is a conductor plate.