KR910008653B1 - Supersonic inspecting device - Google Patents

Abstract

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Description

Ultrasonic flaw detectors in wire drawing equipment

1 is a side view of the ultrasonic scanning apparatus according to the present invention.

The system is seen in the x-arrow of FIG.

3 is a y-y cross-sectional view of FIG.

4 is a z-z cross-sectional view of FIG.

5 is an explanatory view of a state of use of the ultrasonic flaw detector according to the present invention.

* Explanation of the protection of the main parts of the drawing

1: Ultrasonic flaw detector 2: Lubricant box

3: die box for drawing wire 4: attachment failure removal tank

5: ultrasonic tower tank 6: drainage tank

7: guide box 8: die stand

9: bracket 10: pin

11, 12: partition wall 19: fresh dice

A: Wire rod A ': Wire rod

L: Lubricant 23, 44: Drainage

26, 47: Songtonggong 30, 30A: probe

31: vertical flaw holder 31A: square flaw holder

33: wet water hole 35: leak-proof O-ring

41: vertical flaw detection cylinder 41A: square flaw detection cylinder

52: guide dice 63d: air supply machine

64: fresh machine

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultrasonic flaw detector for use in the manufacture of wires for reducing the cross section of wire metal materials such as rods or wire rods through wire dice. will be.

That is, in an ultrasonic flaw detection apparatus for a fresh equipment having a die box supported on a die stand and accommodating a fresh die, the die box is drawn with respect to the moving direction of the fresh wire. And the adhering removal tank disposed adjacent thereto. The first partition disk coaxially attached to the adhering removal tank and having a through hole for passing the fresh wire. The first partition disk is coaxially coupled to the first partition disk. Ultrasonic flaw detection tank having a supply port for accommodating the flaw detection medium, and a second partition disk coaxially attached to the front end of the ultrasonic flaw detection tank and having a through hole for passing the fresh wire; Shearing to a guide die box containing a guide die And the rear end is attached to the second partition disk, is supported at the tip of the die stand, and the discharge port is a drainage tank for discharging the ultrasonic wave detection medium. The membrane forms a hole in the disc to allow the ultrasonic flaw detection medium to flow from the ultrasonic flaw detection tank to the deposit remover, and the deposit remover has a drain outlet for discharging the ultrasonic flaw detection medium. And the hole of the second partition disk relates to an ultrasonic flaw detection device in a fresh installation, characterized in that the ultrasonic flaw detection medium is drained from the ultrasonic flaw tank to the drainage tank. In general, wire drawing of a wire rod such as a metal rod or a metal wire rod is performed by applying a lubricant to the wire rod and drawing it out through a drawing die. In addition, flaw detection of wire rods is carried out by an ultrasonic flaw detector, a vortex flaw detector, or the like during or after drawing. In the conventional drawing process, the ultrasonic wave scanning apparatus during the drawing process is installed between a die box and a wire feeder of a conventional wire drawing apparatus, and vibration of the ship member during the process is in progress. In order to prevent eccentricity in the ultrasonic scanning apparatus according to the back and the like, guides are provided on each of the entrance and exit sides of the ultrasonic scanning apparatus.

In addition, the ultrasonic flaw detector is provided with an ultrasonic flaw detector and an in-cross-section rectangular probe in an ultrasonic testing tank, mainly for the inside of the wire rod and the inclusions of subcutaneous inclusions. We are doing scrutiny. Ultrasonic flaw detectors in such a drawing facility require a space to be installed between the die box of the drawing machine and the air supply machine, that is, an installation space. Therefore, when the drawing equipment becomes more compact, the place of installation is drawn in the die box of the drawing machine. Since the front and rear directions are referred to as the fresh direction in the following description, the shipboard material is not inspected after exiting the fresh dice, and in particular, in order to check the internal flaw of the wire member that has been subjected to the final drawing, ultrasonic inspection It is necessary to separately install the process of performing a bay.

In addition, since the conventional ultrasonic flaw detector is installed and used immediately behind the die box of the drawing machine, as a result, the lubricant buried in the shipboard material immediately behind the die box is removed from the shipboard material after leaving the drawing die before the drawing work. Since the peeled pieces were detected as they were floating in the medium (water or oil) in the ultrasonic inspection tank as they were, the detection noise was detected. Therefore, accurate ultrasonic detection results for the linear material due to the ultrasonic disturbance could not be obtained.

In addition, the conventional ultrasonic flaw detection apparatus is provided with a vertical flaw contactor and a rectangular probe in the end face in the ultrasonic flaw detection tank, and can detect the internal defects such as the inside of the wire rod in the wire and the subcutaneous inclusions. As a result of internal defects of ducts, chevron cracks, which have a conical shape in three-dimensional directions, are not detected.

In order to solve the problems of the prior art, the present invention makes it possible to perform ultrasonic scanning with a compactness of the wire drawing equipment and a low flaw detection noise, that is, a good signal-to-noise ratio. An object of the present invention is to provide an ultrasonic flaw detector for metal wire rods in a wire drawing facility.

In order to achieve the above object, the ultrasonic flaw detection apparatus in the drawing equipment according to the present invention draws the shipboard material through the drawing die and removes the deposit on the front of the die box in the drawing direction of the drawing box. Iv) and the ultrasonic wave inspection tank are installed in order, and the attachment removal tank is separated by a partition wall having a through hole through which the shipboard material passes between the deposition removal tank and the ultrasonic inspection tank. In addition, the ultrasonic probe has a supply port for the ultrasonic flaw detection medium, and the deposit removal tank has a discharge port for the ultrasonic flaw detection medium.

In addition, in order to efficiently detect internal defects such as the inside of the shipboard material and subcutaneous inclusions and the chevron crack in the fresh wire, a vertical flaw detector and an axial square flaw detector can be simultaneously installed in the ultrasonic flaw detector.

Since the fresh dice serve as the rear guide, that is, the ultrasonic flaw detector also serves as the rear guide, the ultrasonic flaw detector can be made compact. In addition, since the shipboard material is inspected immediately after leaving the fresh dice, there is no need to perform an ultrasonic test separately after the final drawing process.

In addition, between the deposit removal tank and the ultrasonic flaw detection chamber are separated by a partition wall or partition disc having only a hole for passing the drawn wire therein. In addition, since the discharge port of the ultrasonic flaw detection tank is provided in the deposit removal tank, the medium in the ultrasonic flaw detection tank can be continuously supplied from the supply port, and can flow out from the shipboard material through hole into the deposit removal tank. Furthermore, by discharging the appropriate amount of medium from the outlet of the deposit removal tank, the lubricant, etc., peeled from the shipboard material immediately after exiting the fresh dice is discharged from the deposit removal tank, and it is prevented from entering into the ultrasonic flaw detection tank. Ultrasonic flaw detection with good S / N ratio and low accuracy is possible.

In addition, by installing both the vertical probe and the axial square probe in the ultrasonic probe, the internal defects of the shipboard and the subcutaneous inclusions, as well as chevron cracks can be simultaneously detected.

Hereinafter, the present invention will be described with reference to the drawings for an embodiment. 1 is a side cross-sectional view of an ultrasonic scanning device according to an embodiment of the present invention, FIG. 2 is an end view of the ultrasonic scanning device along the x-ray of FIG. 1, FIG. 3 is a sectional view along the line yy of FIG. 1, and FIG. It is zz line cross section.

In FIG. 1, the ultrasonic inspection apparatus 1 includes a lubricant box 2, a drawing die box 3, a non-attachment removal tank 4, an ultrasonic inspection tank 5, and a drainage tank 6 from the rear in the drawing direction. The guide box 7 for guides is fixed in this order by means of bolts and welding, and both sides of the drawing die box 3 are attached to the bracket 9 of the die stand 8. The pin 10 is provided so that it can slide to an up-down direction.

The lubricant box 2 is a bottomed box made of a thin plate, which is coupled to a die box supported on the die stand 8 and has a through hole of the wire A 'under the front and rear partition walls 12 and 11. (13) and (14). In addition, the guide tube 15 is installed in the through hole 13 of the first partition wall 11, and the second partition wall 12 is detachably attached to the rear surface of the die box 3 for drawing. It is fixed by.

The drawing die box 3 is pivotably pivotable in the vertical direction by the pin 10 supported on the bracket 9 mounted on the die stand 8 as shown in FIG. Supported. The drawing die box is formed of a substantially cylindrical cylinder, an inner flange 18 is provided in the hollow portion 17 to form an accommodating portion 20 of the drawing die 19. In addition, the front surface 21 is welded and fixed to the rear surface 22 of the deposit removal tank 4.

The deposit removal tank 4 includes a cylindrical body 24 having drain holes 23 and 23 up and down, a drawing die box 3 welded and fixed to the rear surface 22 of the cylindrical body 24, and a cylinder. It is also comprised with the disk 27 which has the through-hole 26 of the wire rod 4 in the center part welded and fixed to the front surface 25 of the sieve 24. As shown in FIG.

The ultrasonic flaw detector 5 includes a tubular cylindrical body 34, a flange 28 attached to the rear end of the tubular cylindrical body 34, a flange 29 attached to the front end, and a vertical flaw holder 31. ), The square flaw holder 31A, the square flaw detector 30 supported by the tip of the vertical flaw holder 31, the flaw flaw holder 31A, and the flaw flaw detector supported by the tip part of the flaw flaw holder 31A. Parallel support 39 and square flaw, which are upright opposite to each other to support the probe 3A and the vertical flaw holder 31, are slid onto the tubular cylindrical body 34 and have holes 36 therein. It consists of the transducer position ring 41A which slides on the cylindrical body 34, and has the hole 36A, with the parallel support body 39A which is mutually upright mutually standing in order to support it for the holder 31A for dragons.

The ultrasonic flaw detector 5 is provided with the probes 30, 30A attached to the front and rear ends of the cylindrical body 34 and the upper end between the flanges 28 and 29, respectively. Ultrasonic flaw detection in the lower portion of the vertical flaw holder 31 and the rectangular flaw holder 31A, which can be inserted thereinto, and having the holes 32 and 32A of the length adjustable in the longitudinal direction. Cylindrical body 34 having a water supply port 33 of water serving as a medium for use and surrounded by the outer periphery of the hole 32 of the cylindrical body 34, and at the same position as the hole 32 for vertical flaw holder A hole 36 having a leak-proof O-ring 35 is provided on an inner circumferential surface on which the 31 can be slidably mounted. In addition, as shown in FIG. 4, in this hole 36, a support 39 for sandwiching and supporting the vertical flaw holder 31 with the bolts 37 and 38 is placed in the cylindrical body 34. Fixing having a structure such as a vertical flaming cylinder 41 having a fixing bolt 40 for fixing and a vertical flaming cylinder 41 surrounded by an outer circumference of the hole 32A of the cylindrical body 34. 41A of rectangular flaw cylindrical bodies which have the bolt 40A, the attachment removal tank 4 which fixed the flange part with the holder 42 to the back of the flange 28 of the rear end of the cylindrical body 34, and the cylinder It consists of the drainage tank 6 fixed to the flange part by the holder 43 in the front surface of the flange 29 of the front end of the sieve 34. As shown in FIG. The O-ring 35 is placed in an annular groove formed in the face of the hole 36 of the vertical probe position ring 41 to fill the gap between the hole 36 and the vertical probe holder 31. In addition, the rectangular probe holder 31A is inserted through the hole 36A of the transducer position ring 41A and is also inserted through the hole 32A in the cylindrical body 34, and the support 39A having the bolt although not shown. Is supported on. The O-ring 35A is also placed in an annular groove formed in the surface of the hole 36A of the rectangular probe position ring 41 to fill the cap between the hole 36A and the rectangular probe holder 31A. In addition, the flange 28 is fastened to the disk 27 of the non-attachment removal tank 4 which has the bolt 42. As shown in FIG.

The drainage tank 6 has a cylindrical body 45 having drainage holes 44 and 44 up and down, and a through hole of the wire A in the center portion fixed to the rear face 46 of the cylindrical body 45 ( 47 and a guide die box 7 welded to the front surface 49 of the cylindrical body 45, respectively.

The guide die box 7 is entirely formed in the semi-cylindrical body 50 and the rear part in the cylindrical plate 51, and the guide die 52 between the cylindrical plate 51 and the front end of the inner peripheral surface of the semi-cylindrical body 50. ) And a semi-cylindrical recessed end portion 55 having a lower cylindrical member 54 having a flange 53 and a semicircular recessed end 55 engaged with the cylindrical plate 51 of the lower cylindrical member 54 at the rear end of the inner circumferential surface thereof. The upper semi-cylindrical member 57 and the upper semi-cylindrical member 57 having a flange 56 engaged with the flange 53 of the lower semi-cylinder member 54 at the front end of the upper semi-cylindrical member 57 are divided into two parts, the upper and lower parts. On each of the outer circumferential surfaces of the engagement surface 58 between the upper half cylindrical member 57 and the lower half cylindrical member 54, radially protruding flanges 59, 60 are provided, and these flanges 59, 60 are placed on two sides. It is fixed by bolts 61 so as to be divided.

And the front surface 49 of the cylindrical body 45 of the drainage tank 6 is welded to the rear surface of the cylindrical plate body 51 of the lower half cylindrical member 54.

On the other hand, reference numeral 62 denotes a jig fixed to the front of the die stand 8 and configured to be movable up and down, and mounts the L guide die box 7 of the ultrasonic flaw detector 1.

The use state of the ultrasonic flaw detector 1 configured as described above will be described with reference to FIG. In this drawing, the wire drawing device 63 and the wire drawing 64 are fixed to the bed F. The die stand 8 of the drawing machine 64 is provided with an ultrasonic flaw detector 1 having the above-described configuration. It is done.

In addition, the lubricant L is contained in the lubricant box 2 of the ultrasonic flaw detector 1 with respect to the drawing, and the drawing die 19 suitable for a predetermined processing rate is mounted in the drawing die box 3, The ultrasonic flaw detector 5 includes a vertical flaw holder 31 having a probe 30 and 30 A at its tip, a square flaw holder 31 A, and a hole 32, 36 (32 A). 36A, respectively, are adjusted and mounted while being mounted, and the die die 7 for the guide is equipped with a die 52 having a processing rate of almost zero.

After that, the to-be-wired wire A 'wound on the coil 63 is placed on the coil 63, and the tip of the wire to be processed A' smaller than the inner diameter of the guide die 52 is guided in the lubricant box 2. It protrudes forward of the guide die 52 through the pipe | dye 15 from the guide die 52 of the die box 7 for guides, and the protruded tip is chucked to the winding cylinder 65 of the freshener 64. In this state, the water supply port 33 of the ultrasonic inspection tank 5 is opened and watered, and at the same time, the deposit removal tank 4, the ultrasonic inspection tank 5, and the drainage tank 6 While the drain openings 23 and 23 of the deposit removal tank 4 are opened and drained so that they are always filled with water, the drain ports 44 and 44 of the drain tank 6 are discharged from the ultrasonic flaw detection tank 5. After opening to such an extent that there exists a flow of water to the water tank 6 side, the winding material 65 of the drawing machine 64 is rotated, and the to-be-drawn wire A is fresh.

Therefore, during the drawing, since the outflow water is continuously flowing from the ultrasonic inspection tank 5 to the deposit removal tank 4 between the through hole 26 of the disk 27 and the drawing material A, the drawing die 19 is removed. Lubricants, etc., peeled from the fresh wire (A) immediately after they exit, stop in the deposit removal tank (4), are discharged from the discharge ports (23) and (23), and do not flow into the ultrasonic flaw tank (5). Since the temperature rise water which cooled the heated wire A is discharged immediately, the temperature rise of the water in the ultrasonic flaw detection tank 5 is prevented, and in the ultrasonic flaw detection vessel 5, the flaw detection noise is small, that is, the S / N ratio is good. Ultrasonic flaw detection is performed.

Further, by using the rectangular flaw detector 30A among the vertical flaw detector 30 and the square flaw probe 30A provided in the ultrasonic flaw detector 5 as the axial square flaw probe, The internal defect of) and Chevron Crack can be examined simultaneously in fresh.

In addition, in the present embodiment, two flaw holders are exemplified in an ultrasonic flaw detector, but three or more flaw holders are installed, and a vertical flaw detector, an in-section square flaw detector, an axial square flaw probe, etc. Needless to say, it can be used appropriately so that the flaw detection performance can be improved.

According to the ultrasonic flaw detection apparatus according to the present invention, since the deposit removal tank and the ultrasonic flaw detection tank are fixedly installed in this order in the fresh direction of the die box for storing the fresh dice, the die box of the fresh machine and the feeder The inspection device becomes unnecessary between them, and the distance between the die box of the drawing machine and the feeding machine can be as narrow as possible, and the drawing device can also serve as the rear guide of the ultrasonic inspection device, thereby making the ultrasonic inspection device itself compact. .

In addition, since the shipboard material is inspected immediately after leaving the fresh dice, there is an advantage that it is possible to omit the ultrasonic wave inspection in a separate process after the final wire processing.

Claims (2)

In an ultrasonic flaw detector for a drawing facility having a die box supported on a die stand and containing a fresh die, after the die box has been drawn with respect to the direction of drawing. A deposit removal tank disposed adjacent thereto; A first partition disk coaxially attached to the deposit removal tank and having a through hole for passing the wire; An ultrasonic flaw detector coaxially coupled to the first partition disk and having a supply port for receiving the ultrasonic flaw detection medium therein; A second partition disk coaxially attached to the front end of the ultrasonic scanning tank and having a through hole for passing the wire; A front end portion attached to the guide die box for accommodating the guide die, and a rear end portion of the second diaphragm attached to the disc, supported by the front end portion of the die stand, and a discharge port for discharging the ultrasonic flaw detection medium; The first partition forms a hole in the disc to allow the ultrasonic flaw detection medium to flow from the ultrasonic flaw detection tank to the deposit remover. An ultrasonic flaw detector for a fresh equipment, characterized by being filled with a flaw detection medium and allowing the hole in the second partition disk to drain the ultrasonic flaw medium from the ultrasonic flaw to the sump. The ultrasonic flaw detector according to claim 1, wherein the ultrasonic flaw detector comprises at least one vertical flaw detector and at least one square flaw detector.

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