JPH0611503A - Equipment for inspecting clink of ingot - Google Patents

Abstract

PURPOSE:To obtain inspecting equipment of a clink of an ingot which facilitates improvement of a working efficiency of inspection and improvement of the precision of the inspection. CONSTITUTION:When a clink exists in an ingot 1, a penetrant stuck by a penetrant sticking mechanism 20 penetrates the inside of the clink from the surface of the ingot 1. Then, the penetrant on the surface of the ingot 1 is wiped off by a penetrant removing mechanism 30. When a developer is stuck by a developer sticking mechanism 40 subsequently, the penetrant remaining inside the clink reacts with the developer. By checking up whether this reaction occurs or not, accordingly, an inspector can make a judgement as to whether the clink exists or not.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casting ingot internal crack inspection device.

[0002]

2. Description of the Related Art Conventionally, as a method for producing an ingot such as a copper billet, there has been known a method in which a molten metal melted in a shaft furnace is cast by a continuous casting machine and cut into a predetermined length. There is.

As a means for inspecting the thus obtained ingot for the presence of internal cracks, an operator sprays a penetrant onto the surface (usually a cut surface) of the ingot taken out as a sample, for a predetermined time. After a lapse of time, the penetrating liquid is wiped off, and then the developing solution is applied to the surface of the ingot. If the ingot has internal cracks, the infiltrating liquid penetrates into the ingot, so that the infiltrating liquid remains inside the ingot even after the infiltrating liquid is wiped off. Then, when a developing solution is applied, the penetrant and the developing solution react with each other. Therefore, the worker can inspect whether or not there is an internal crack in the ingot by inspecting the presence or absence of this reaction.

However, in the above-mentioned conventional means, since each work is performed manually by the worker, it takes a long working time, and it is not possible to take a large number of samples. It is difficult for the time, the amount of penetrating liquid, and the amount of developer sprayed to be constant,
There is a problem that it is difficult to improve the inspection accuracy.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and improves the work efficiency of inspection,
Further, it is an object of the present invention to provide an ingot internal crack inspection device capable of improving inspection accuracy.

[0006]

SUMMARY OF THE INVENTION An ingot internal crack inspecting apparatus according to the present invention comprises a conveying path for conveying an ingot, a permeating liquid adhering mechanism for adhering the permeating liquid to the surface of the ingot, and a permeating liquid casting device. The penetrant removal mechanism for removing from the surface of the ingot and the developer adhering mechanism for adhering the developer onto the surface of the ingot are provided. It is arranged on the downstream side, and the developer adhering mechanism is arranged on the further downstream side of the penetrant removing mechanism.

[0007]

When the ingot has internal cracks, the penetrant liquid adhered by the penetrant adhering mechanism enters the inside of the cracks from the surface of the ingot. Then, the penetrant solution removal mechanism wipes off the penetrant solution on the surface of the ingot, and when the developer solution adheres by the developer solution adhering mechanism, the penetrant solution remaining inside the crack reacts with the developer solution. . Therefore, the inspector can determine whether or not there is an internal crack by confirming whether or not this reaction has occurred.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An ingot internal crack inspection device according to an embodiment of the present invention will be described with reference to FIGS. The inspection apparatus according to the present example attaches a penetrant liquid to a chain conveyor (conveyance path) 10 that conveys a cylindrical ingot (copper billet) 1 and one end surface (cut surface) 1a of the ingot 1 in the axial direction. The penetrant solution removal mechanism 30 for removing the penetrant liquid from the end face 1a of the ingot 1 and the developer solution adhering mechanism 40 for adhering the developer solution to the surface of the ingot 1 are provided. Mechanism 3
0 is arranged on the downstream side of the penetrant attachment mechanism 20 in the conveyance direction of the conveyance path 10, and the developer adhesion mechanism 40 is arranged on the further downstream side of the penetrant removal mechanism 30.

The chain conveyor 10 is composed of two chains 11 and 12 arranged in parallel. The chains 11 and 12 are rotationally driven at a constant speed by a drive mechanism. A predetermined member such as a hook is attached to the chains 11 and 12 to convey the ingot 1 downstream.

As shown in FIGS. 2 and 3, the permeating liquid attachment mechanism 20 has a magnet base 21 arranged on the side of the chain conveyor 10 and a support column standing above the magnet base 21. 22, a pipe 23 slidably fitted to the column 22, a screw 24 for fixing the pipe 23 to the column 22, and a plate-shaped pedestal 25 radially extended from the pipe 23 and fixed thereto. A semi-cylindrical spray can holder 26 erected on the upper surface of the pedestal 25, a spray can 27 for spraying the penetrant contained in the holder 26, and a stay erected on the pedestal 25. 28
An L-shaped arm 29 rotatably attached to the stay 28 via a pin 121, a wire 122 fixed to one end 29a of the arm 29, and the wire 1
A lever 123 attached to the other end of the wire 122 for moving the wire 122 in the longitudinal direction; a tube 124 for covering the wire 122;
It is composed of a coil spring 125 that urges in six directions.

The lever 123 has chains 11 and 12
Between them and on the side of these chains, and project upward from the upper ends of these chains (see FIG. 3). It can be pushed down to. The lever 123 is installed slightly upstream of the spray can 27. The nozzle of the spray can 27 is arranged in a direction orthogonal to the transport direction of the chain conveyor 10, and is configured to spray the penetrant liquid toward the end surface 1a of the ingot 1 transported by the conveyor 10. Has been done.

In the apparatus of this example, a spray can 2 for penetrant liquid is used.
As No. 7, xylene containing 40 to 50% (specifically, Color Check Penetrant Liquid PS (trade name), manufactured by NOF CORPORATION) is used.

As shown in FIGS. 4 and 5, the permeate removing mechanism 30 has a base 31 arranged on the side of the chain conveyor 10 and a pedestal 3 standing on the base 31.
2, a lever 33 rotatably attached to the pedestal 32 and extending upward, a lever 34 similarly attached upstream of the lever 33, and the lever 3
A coil spring 33a attached to the lower surface of the lever 3 for urging the lever 33 upward, and a turnbuckle 3 having one end rotatably pin-coupled to the lower surface of the free end of the lever 33.
5, an L-shaped arm 36 whose one end is pin-connected to the other end of the turnbuckle 35, a pin 37 that rotatably connects the arm 36 to the base 31, and stands on the base 31. A leg 38 provided, a support base 39 fixed to the upper end of the leg 38 and extended in the waterside direction, and slidable in the horizontal direction (left and right direction in FIG. 4) inside the upper surface of the support base 39. The slide base 131 attached to the chain conveyor 10 so as to be separated from and close to the chain conveyor 10, a holding plate 132 fixed to the upper part of the slide base 131, and one end of the holding plate 132 are inserted and arranged horizontally. Bolt 133,
It is fixed to the other end of this bolt 133 and has a long hole 134 inside.
A plate 134 having a formed thereon, a nut 135 for fixing one end of the bolt 132 to the pressing plate 132, an electric polisher 136 installed on the slide base 131, and a rotary shaft of the bolster 136 are fixed. The rotary plate 137 and a wiping cloth 138 attached to cover the front surface of the rotary plate 137.

The lever 34 is biased upward by a spring (not shown) and has a micro switch 34b at its base so that the micro switch 34b is turned on when it is moved downward. Is configured. The micro switch 34b is electrically connected to the polisher 136 via the cord 34a.

The other end 36b of the arm 36 is inserted into an elongated hole 134a formed in the plate 134. Further, as the wiping cloth 138, it is preferable to use a material having high water absorption.

As shown in FIGS. 6 and 7, the developer adhering mechanism 40 includes a magnet base 41 (FIG. 7) disposed on the side of the chain conveyor 10 and a stay 41a on the upper part of the magnet base 41. A support plate 42 mounted via the support plate 42, a pin 42a that is fixed near the upper end of the support plate 42 and protrudes forward, and a motor 43 (FIG. 6) that is mounted on the back surface side of the support plate 42. , This motor 4
Disk-shaped rotary plate 44 fixed to the output shaft of No. 3, a connecting pin 45 fixed to the eccentric position of the rotary plate 44, and a swing arm 46 having one end rotatably fitted to the connecting pin 45. A fixed arm 47a rotatably pin-coupled to the other end of the swing arm 46, a swing base 47 fixed to the fixed arm 47a, and an upright position on the upper surface of the swing base 47, Substantially semi-cylindrical holders 48a and 48b arranged with their inner surfaces facing each other, and these holders 48a.4
Spray can 142 for developer housed inside 8b
A board 47b which is erected on the rocking base 47 and rotatably fitted to the pin 42a of the support plate 42, and rotatably attached to the front surface of the board 47b through the pin 141. L-shaped arm 49, a wire 143 having one end attached to one end of the arm 49, a lever 146 attached to the other end of the wire 143 to move the wire 143 back and forth in the length direction, and a wire 143. 14
3 and a coil spring 14 for urging one end of the arm 49 toward the spray can 142.
3 and a lever 147 arranged on the upstream side of the lever 146.
And a micro switch 148 which is turned on when the free end of the lever 147 is lowered, and a micro switch 14
8 and the motor 43 are electrically connected to each other by a cord 148a.

Like the lever 123, the levers 146 and 147 are installed between the chains 11 and 12 or on the side of these chains, and the ingot 1 being conveyed comes into contact with the levers to move downward. It can be pushed down. In addition, both levers are spray cans 142
It is arranged at a position slightly upstream of the position. The nozzles of the spray can 142 are arranged in a direction orthogonal to the transport direction of the chain conveyor 10, and are configured so that the developer can be sprayed toward the end surface 1a of the ingot 1 transported by the conveyor 10. Has been done.

In the apparatus of this example, the spray can 1 for the developing solution is used.
42 containing 80 to 90% of isopropyl alcohol (specifically, color check developer D-S
(Trade name), manufactured by NOF CORPORATION is used.

On the inner surfaces of the holders 48a and 48b, it is preferable to provide a non-slip member such as a resin ring for preventing rotation about the axis of the spray can 142.

Next, the operation of the apparatus of this example will be described. First, the ingot 1 cut into a predetermined length is transferred to the conveyor 1
0 conveys it downstream. At this time, the cut surface 1a
Are arranged so as to face the side where the penetrant liquid adhesion mechanism 20 and the like are arranged. When the ingot 1 is conveyed downstream, the ingot 1 contacts the upper surface of the lever 123, and the lever 123 is lowered by the weight of the ingot 1. As a result, the wire 122 is pulled by the lever 123, and the arm 29
Rotates counterclockwise in the figure, the other end 29b of the arm 29 pushes down the head of the spray can 27, and the permeate is ejected from the nozzle of the spray can 27. Thereby, the penetrant liquid can be sprayed onto the end surface 1a of the ingot 1. Here, in the apparatus of this example, since the penetrant liquid adhering mechanism 20 is supported by the magnet base 21, this base 21 can be easily moved, and therefore, the timing of adhering the penetrant liquid can be easily adjusted. Thus, the penetrant liquid can be sprayed onto the ingot 1 at an appropriate timing. Ingot 1 is lever 12
After passing over 3, the wire 125 is
22 returns to the initial position, and the permeating liquid is stopped from blowing.

When the ingot 1 is conveyed further downstream, the ingot 1 contacts the upper surface of the lever 34 and pushes down the lever 34. Then, the micro switch 34b is turned on, the polisher 136 is turned on, and the rotary plate 13 is turned on.
7 starts to rotate. Next, the ingot 1 contacts the upper surface of the lever 33 and pushes down the lever 33. Then, the arm 36 is moved to the pin 3 via the turnbuckle 35.
4, the arm rotates in the clockwise direction in FIG. 4, the other end 36b of the arm abuts against the inner surface of the elongated hole 134a of the plate 134, and the slide base 131 is moved toward the chain conveyor 10. Here, the slide base 131 is the support base 39.
Slide up to move. As a result, the polisher 136 is moved toward the ingot 1, the wiping cloth 138 attached to the rotary plate 137 is brought into contact with the end surface 1a of the ingot 1, and the permeation adhering to the surface of this end surface 1a. The liquid can be wiped off. Here, in the apparatus of this example, the position of the lever 33 is adjusted so that the slide base 131 moves toward the ingot 1 when the moving ingot 1 moves in front of the rotating plate 137. is there.

In the apparatus of this embodiment, when it is necessary to adjust the protruding position of the rotary plate 137, the nut 135 is loosened, the plate 134 is moved back and forth, and the nut 13 is again moved.
By tightening 5 to fix the plate 134 in place, there is the advantage that it can be easily adjusted. In addition, the turnbuckle 35 is operated to operate the lever 3
Since the distance between the arm 3 and the arm 3 can be changed, the same adjustment can be performed by this. After the ingot 1 has passed, the lever 33 returns to the initial position by the elastic force of the coil spring 33a. Similarly, the lever 34 is also returned to the initial position by the spring attached to the base portion.

When the ingot 1 is conveyed further downstream,
The ingot 1 contacts the upper end of the lever 147 and pushes down the lever 147. Then, the micro switch 148
Is turned on, the motor 43 is turned on, and the rotary plate 44 is turned on.
To rotate. Thereby, via the swing arm 46,
A force in the front-back direction is applied to the rocking base 47. Rocking table 47
Is supported by a pin 42a, so that it swings about this pin 42a within a certain angle range.
As a result, the spray can 142 placed on the rocking base 47 can be rocked to mix the contents. Most spray cans for developers require shaking to mix the contents before use,
According to the apparatus of this example, the same operation as described above can be achieved by the above operation.

In the apparatus of this embodiment, since the spray can 142 is held inside the holders 48a and 48b, it is possible to prevent the spray can 142 from coming off even when the rocking base 47 is rocked.

Then, when the ingot 1 is conveyed further downstream, the ingot 1 contacts the upper surface of the lever 146 and pushes down the lever 146. Then, the wire 143 is pulled by the lever 146, the arm 49 pivots in the clockwise direction in the figure around the pin 141, the end of this arm 49 pushes down the head of the spray can 142, and the nozzle of this spray can 142 The developing solution can be blown out from. As a result, the developer can be attached to the end surface 1 of the ingot 1.

In the developer adhering mechanism 40, like the penetrating liquid adhering mechanism 20, it is easy to move the magnet base 41. Therefore, the spraying position of the developer can be easily adjusted, and the ingot 1 is conveyed. There is an advantage that the installation position can be adjusted according to the speed and the like, and the developing solution can be accurately sprayed onto the end surface 1a of the ingot 1.

Also in the apparatus of this example, when the ingot 1 has internal cracks, the penetrating liquid penetrates into the cracked portion, so that the penetrating liquid penetrates into the ingot 1 even after the penetrating liquid is wiped off. The liquid remains. In this case, since the developing solution and the remaining penetrant solution react with each other, it is possible to judge whether or not there is an internal crack by checking the inspector whether or not this reaction has occurred. it can.

According to the apparatus of this embodiment, as described above, the infiltrating liquid can be automatically sprayed, wiped off, and the developing liquid can be sprayed on the ingots 1 that are successively conveyed. Work efficiency is higher and work time can be shortened compared to manual work. Therefore, there is an advantage that the number of inspection samples can be increased and the inspection accuracy can be improved.

Further, according to the apparatus of this example, the mechanism for performing each work is arranged at a predetermined interval, and further, the conveying speed of the ingot 1 is appropriately set, so that the amount of the penetrant liquid sprayed,
It is easy to standardize the penetration time (time from spraying to wiping), the spraying amount of the developing solution, and the like, and from this point, there is an advantage that the inspection accuracy can be further improved.

In the above-mentioned apparatus of this example, the ingot 1 is detected by levers 123, 33, 34, 146, 14
Although it is supposed to be carried out by No. 7, it goes without saying that other detecting means such as a photoelectric sensor may be used.

[0031]

The ingot internal crack inspection device according to the present invention comprises:
A conveying path for conveying the ingot, a penetrant adhering mechanism for adhering the penetrant to the surface of the ingot, a penetrant removing mechanism for removing the penetrant from the surface of the ingot, and a developer adhering to the surface of the ingot And a developing solution adhering mechanism that allows the penetrant solution removing mechanism to be arranged downstream of the penetrant solution adhering mechanism in the conveying direction of the conveying path, and the developing solution adhering mechanism further downstream of the penetrant solution removing mechanism. Since it is arranged, the penetrant is automatically sprayed, wiped off on the ingots that are sequentially conveyed,
The developer can be sprayed, the work efficiency is higher than the conventional manual work, the work time can be shortened, the number of samples can be increased, and the inspection accuracy can be improved. In addition, the mechanism for performing each work is arranged at a predetermined interval, and by further setting the ingot transportation speed appropriately, the amount of the penetrant sprayed, the penetration time (time from spraying to wiping), and the developer It is easy to standardize the spraying amount and the like, and in this respect as well, it is possible to further improve the inspection accuracy.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an arrangement state in a plan view of an ingot internal crack inspection device according to an embodiment of the present invention.

FIG. 2 is a side view of a penetrant spray device according to an embodiment of the present invention.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is a side view of the penetrant wiper according to one embodiment of the present invention.

5 is a view on arrow A in FIG. 4. FIG.

FIG. 6 is a plan view of a developer spraying device according to an embodiment of the present invention.

FIG. 7 is a view on arrow B in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ingot 10 Chain conveyor (conveyance path) 20 Penetrant solution attachment mechanism 30 Penetrant solution removal mechanism 40 Developer solution attachment mechanism

Claims (1)

[Claims] 1. A transport path for transporting the ingot, a permeate adhering mechanism for adhering the permeate to the surface of the ingot, a permeate removing mechanism for removing the permeate from the surface of the ingot, A developing solution adhering mechanism for adhering a developing solution to the surface of the ingot, wherein the penetrant solution removing mechanism is arranged downstream of the penetrant solution adhering mechanism in the carrying direction of the carrying path. Is located further downstream of the permeate removal mechanism, and is an ingot internal crack inspection device.