KR101038788B1 - Wire-rod Guiding Apparatus for Wire Rod's Surface Flaws Detector - Google Patents

Abstract

There is provided a wire rod guide device disposed on the surface defect flaw detector for inspecting the surface defects of hot rolled wire rods.

The wire guide device of the surface defect flaw detection device, the device base disposed on the wire rod traveling path passing through the hot wire flaw detection device; and the device base is assembled detachably from both sides of the flaw detection device, the magnetic saturation coil is built-in Guide fixing block of the entrance and exit side of the flaw detection device; And guide members at the entrance and exit of the flaw detector, which are assembled to form a cooling medium passage in each of the fixed blocks, and support the flaw detector at both sides and guide the wire which is advanced. Is provided with a horizontal coupling portion, the device base includes a base block and a fixed block support having a block coupling portion that is vertically installed on the base plate and the horizontal coupling portion of the guide fixing block, the guide fixing block and the guide member The inclined contact surface is in close contact with each other during assembly to form the cooling medium passage, the guide fixing block is formed with a through hole for supplying a cooling medium in communication with the cooling medium passage, the entry guide member is fixed to the guide A bolt fixing groove for pressing fastening fastened to the block is provided, Group exit side guide member is configured to include the bolt fixing part fastening bolt fastened to the guide block is fixed rear support place.

According to the present invention, it is easy to disassemble and assemble the device parts, thereby making it easy to repair or replace the device, and to obtain an improved effect of extending the life of the device by effective cooling while increasing the precision of flaw detection of the wire rod. Can be.

Hot wire surface inspection, flaw detector, flaw guide device

Description

Wire-guide device for surface defect flaw detector {Wire-rod Guiding Apparatus for Wire Rod's Surface Flaws Detector}

The present invention relates to a wire rod guide device of the surface defect flaw detection device for inspecting the surface defects of the hot-rolled wire rod, and more particularly, easy disassembly and assembly of the device parts to facilitate the repair or replacement of the device, The present invention relates to a wire guide device of a surface defect flaw detector which increases the precision of surface flaw detection and extends the life of the device by effective cooling.

In general, the wire manufacturing process is to heat the billet (for example, the cross-sectional area 160 × 160 mm) of the rolled material to approximately 940 ~ 1200 ℃, the temperature that can be rolled in the furnace, and then rough rolling, medium rough rolling, intermediate finishing rolling and finishing Through several continuous rolling processes such as rolling, wire rods with a material temperature of 800 ~ 1000 ℃ or more and a diameter of 5.5 ~ 42 mm are produced.

For example, as shown in FIG. 1, the wire rod W in the hot state is a surface defect flaw detector 130 disposed between the finishing mill 110 and the water cooler 120, and its entrance and exit (front and rear). The guide 140 and 150 of the while detecting the discontinuous surface defects of the wire rod.

In addition, the wire W passing through the surface defect flaw detector 130 and the outlet guide 150 is cooled to about 800 ° C. or less in the water cooler 120, and in the form of a coil W ′ in the laying head 160. It is wound up. On the other hand, in the case of FIG. 1, the case of the small diameter wire rod whose diameter is about 5.5-15 mm is shown.

On the other hand, as shown in Figures 1 and 2a, 2b, the flaw detection device 130 to detect the surface defects of such a wire rod, the flaw detection coil 136 is disposed inside the casing 134, the wire passing hole 138 in the center ) Is formed, and the cable connection connector 134a is disposed at one side of the casing. The cable connected to the connector 134a is connected to the display unit 132 that informs the flaw detection signal.

Therefore, the defective portion s generated on the surface of the wire rod W that passes through the through hole 138 of the flaw detector is the flaw detector coil current 136, that is, the transmitting and receiving coils s1 which perform the vortex flaw detection. Surface defects are detected while passing between s2) (d1, d2) and the detected signals appear on the display unit 132.

Meanwhile, FIG. 3 illustrates the entrance guide 140 of the entry and exit guides 140 and 150 of the wire rod flaw detector 130 according to the related art. 3, only the entrance guide is shown, but the exit guide is also the same structure as FIG.

That is, the guide 140 of the conventional flaw detector, the guide member 142 and the guide member for guiding the wire rod (W) to the center wire through hole 138 of the flaw detector 130 to support the concave portion of the flaw detector Magnetic saturation coil (C) that is fixed and stabilizes the flaw detection is built and is fixed to the base is composed of a guide fixing block 144, the guide is fastened as a bolt (B).

By the way, during the vortex flaw detection, the filling rate indicating the degree of distance (distance) between the eddy current coil 136 and the wire rod W of the device is important for the vortex flaw detection sensitivity, and the occurrence of vibration of the wire rod that is carried is accompanied by noise. Therefore, the guide 140 is necessary because it causes a problem in flaw detection reliability.

On the other hand, the rolling material temperature at the time of filament rolling of the wire rod is usually 800 to 1000 ° C, but the control rolled material having a rolling temperature of 750 to 800 ° C for the manufacture of special steel, for example, spring steel, bearing steel or high-grade steel wire, etc. In the case of the magnetic distortion of the rolled material due to the magnetic transformation of the rolled material (severely), the surface defect detection of the hot wire material is not normally performed, wherein the magnetic saturation coil (C) as described above It is embedded in the guide to remove the disturbance caused by the magnetic transformation of the control rolled material and to perform the surface flaw detection inspection of the wire rod normally.

However, in the case of the conventional guide 140 shown in Figure 3, the guide block 144 in which the magnetic saturation coil (C) is built should be formed with a cooling water passage (144a) for blocking heat transmitted from the material However, the spacing (distance) between the magnetic saturation coil or the flaw detector coil 136 and the wire rod (W) by the formation of the cooling water passage (144a) has a problem that the filling rate described above is lowered.

In addition, when electricity is applied to the magnetic saturation coil (C), foreign matter such as fine iron is attached between the guide 142 and the fixed block 144, there was another problem that makes it difficult to replace the guide.

Therefore, the surface replacement flaw of the wire rod is also delayed by the guide replacement delay, which leads to the non-rolling of the wire rod, thus affecting the productivity.

Accordingly, the applicant of the present invention improved the structure of the flaw detection device entry and exit guide device to narrow the distance between the wire rod and the coil as possible compared to the existing, and proposed the present invention to facilitate the assembly and disassembly between parts.

The present invention has been proposed in order to solve the conventional problems as described above, the object of the object is to facilitate the assembly and disassembly of the device guide parts, the distance between the magnetic saturation coil and the wire rod provided in the device closer to the conventional The present invention provides a wire guide device for a surface defect flaw detector that enables to improve the wire rod inspection precision, and in particular, to remove the foreign matter between the guide parts and to simplify the cooling by simple component structure improvement.

As a technical aspect of the present invention for achieving the above object, the present invention is arranged on the flaw detection device side for inspecting the surface defects of the hot wire, the wire guide device of the surface flaw flaw detection device including a magnetic saturation coil, An apparatus base disposed on a wire rod propagation path passing through the flaw detector; and a guide fixing block at the inlet and out of the flaw detector, which is assembled to be detachable from both sides of the flaw detector and includes a magnetic saturation coil; And a flaw detection member entrance and exit guide member for supporting the flaw detection device on both sides and guiding the wire which proceeds while being assembled to form a cooling medium passage in each of the fixed blocks.
Horizontal coupling parts are provided at both sides of the guide fixing block, and the device base includes a base block and a fixed block support having a block coupling part vertically installed on the base plate and fastening the horizontal coupling part of the guide fixing block.
The guide fixing block and the guide member are in close contact with each other when assembling includes a inclined contact surface to form the cooling medium passage, the guide fixing block is formed with a through hole for supplying a cooling medium in communication with the cooling medium passage,
The entrance guide member is provided with a bolt fixing groove for pressing the fastening bolt fastened to the guide fixing block, the exit guide member includes a bolt fixing end is supported by the fastening bolt fastened to the guide fixing block; It provides a wire guide device of the configured surface defect inspection apparatus.

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Preferably, the device base may further include at least one of a guide and a guide roller disposed before and behind the guide fixing block.

More preferably, the guide fixing block is formed in a cylindrical shape, the fixing block support vertically installed on the base plate of the device base may include a circular mounting portion in which the cylindrical fixing block is seated and supported.
More preferably, the fastening bolt is fastened to a bolt fastener formed at a plurality of points in the radial direction to the protruding end integrally formed in the fixing block to press or support the guide member to be fixed.

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According to the present invention, it is possible to facilitate the assembly and disassembly of the device guide parts, and to increase the wire flaw detection accuracy by making the distance between the magnetic saturation coil and the wire rod provided in the device closer than before. It is to provide an effect that enables the removal of foreign matter between the fixed block and the guide member and the cooling by simple structural improvement.

Therefore, the present invention ultimately facilitates maintenance or replacement of the device, and extends the device life with effective cooling while increasing wire rod flaw detection accuracy.

Hereinafter, preferred embodiments of the present invention according to the accompanying drawings will be described in detail.

First, as shown in Figs. 4A, 5B and 5, the surface defect flaw detector is disposed on both sides of the flaw detector 130 for flaw detection of the surface defect of the hot wire of the present invention, and includes a magnetic saturation coil (C). The wire guide device 1 of the apparatus is largely arranged on a wire rod propagation path passing through the flaw detection device, and is detachably assembled to both sides of the flaw detection device on the device base 10 while the magnetic The guide fixing blocks 20 and 30 at the inlet and outlet of the flaw detection device having the built-in saturation coil C and the cooling medium passages 60 formed at the respective fixing blocks 20 and 30 are assembled at both sides. It may be configured to include a flaw detection device entry and exit guide member 40, 50 to support the flaw detection device and to guide the wire (W) to proceed.

At this time, as shown in Figures 7a and 9b, the wire passing through holes (40a, 50a) are formed inside the flaw detector entrance guide member 40 and the exit guide member 50.

Therefore, when the wire rod guide device 1 of the present invention assembles the entrance and exit guide fixing blocks 20 and 30 and the entrance and exit guides 40 and 50 in which the magnetic saturation coil C is built, In the meantime, the cooling medium passage 60, that is, the passage through which the cooling gas or the cooling water is supplied, is formed as described in detail below.

As a result, the wire guide device 1 of the present invention, without forming the cooling water passage 144a in the fixed block separately, as shown in Figure 3, the gap between the coil and the wire rod naturally when assembling the cooling medium passage 60 with the fixed block Since it is implemented as far as possible, it is easy to manufacture parts compared to the cooling water passage of the existing fixed block.

At this time, as shown in Figure 4a and 4b, the wire guide device (1) of the present invention is the entrance, exit side, which is disposed before, the rear of the entrance, exit fixed block further provided on the device base (10). The guides 70 and 70 'and the inlet and outlet guide rollers 80 may be further included.

And, as shown in Figure 4a, b, the guides are assembled to the wire rod direction in each of the support base (72, 72 ') of the device base, guide rollers can also be installed on a support object not shown in a separate drawing have.

Therefore, since the wire rod guide device 1 on the surface defect flaw detector side of the present invention further includes guides and guide rollers, the wire rod can suppress vibration generated during wire rod progression, and the wire rod can be opened through the flaw detector (Fig. 2A). 138) through the center.

On the other hand, the wire guide device 1 of the present invention, as shown in Figure 5, while the guide fixing block 20, 30 and the guide member 40, 50 of the entry and exit side is disposed on both sides of the flaw detection device 130 The guide members 40 and 50 are fixed to the flaw detector 130 while pressing them from both sides.

However, the structures of the entrance and exit guide fixing blocks 20 and 30 and the guide members 40 and 50 are almost the same, and the different configurations will be described later in FIG. 9.

On the other hand, the guide fixing block 20, 30 in the guide device of the present invention, as shown in Figures 6a and 6b, the horizontal coupling portion 22, 32 protruded on both sides while being formed in a cylindrical shape It is provided with.

At the same time, the device base 10 is installed in the base plate 12 and the base plate 12 vertically and the horizontal seating portion 14 and the horizontal coupling portion of the guide fixing block to which the cylindrical fixing block is seated and supported ( A fixed block support 18 is provided with a block engaging portion 16 to which the 22 and 32 are fastened.

Thus, as shown in Figure 6, when viewed from the front, cylindrical, the front and back, the entrance and exit guide fixing blocks 20, 30 of the circular structure, the horizontal coupling portion 22, 32 is the device base 10 It can be easily assembled and disassembled by a bolt fastened to the screw groove (16a) of the block coupling portion 16 of the fixed block support 18 is assembled vertically to the base plate 12 of the).

As a result, the flaw detection device entry and exit guide fixed block 20, 30 of the wire guide device of the present invention is easily assembled and disassembled to the fixed block support 18 of the base member.

On the other hand, as shown in Figures 6a, b and 7a, b, the inlet guide member 40 is concave in the bolt fixing groove 44, the fastening bolt (B) that is fastened to the guide fixing block is supported by the concave The processing is formed.

Accordingly, when the fastening bolt B is fastened to the bolt fastener 26 formed at a plurality of points, for example, four points in the radial direction to the protruding end 20c formed at one side of the entrance guide fixing block 40, the bolt is guided. The assembly of the guide fixing block of the entrance guide member 40 is completed while fitting into the bolt fixing groove 44 of the member 40.

As a result, the guide device of the present invention is also easy to assemble and disassemble the entry guide member and the guide fixing block.

In addition, as shown in Figure 6 and 9, the exit guide member 50 has a bolt fixing end 54 is supported by the fastening bolt (B) fastened to the guide fixing block 50 is supported on the rear end It is formed concave integrally.

Therefore, when the fastening bolt B is fastened to the bolt fastener 36 formed at four points in the radial direction to the protruding end 30a integrally formed on the exit guide fixing block 30, as shown in FIG. Support the guide member 50 to complete the assembly.

As a result, the wire guide device of the present invention, the guide fixing block is easily assembled and disassembled to the device base support, the guide member is also easily assembled and disassembled to the guide fixing block.

That is, the wire guide device 1 of the present invention is very easy to assemble and disassemble the parts.

Next, as shown in Figs. 7a, b and 8a-c and Figs. 9a, b, each of the guide fixing block 20, 30 and the guide member 40 of the flaw detector entry and exit side assembled with each other ( 50 includes inclined contact surfaces 24, 34, 42 and 52 which, when assembled together as described above, form the cooling medium passageway 60 described above therebetween.

At the same time, the guide fixing block 40, 50, through-holes 28, 38 for supplying a cooling medium in communication with the cooling medium passage 60 is formed integrally, preferably 8b, c It is formed to be inclined as shown.

Therefore, the main part of FIG. 8A is an enlarged view of part 'A' of FIG. 7A, and a cooling medium passage 60 is naturally formed between the guide fixing block 40 and the guide member 20.

For example, when the contact width between the guide fixing block and the inclined contact surface of the guide member is adjusted, the width of the cooling medium passage can also be adjusted.

Therefore, when the cooling water supply pipe (not shown) or the cooling gas (for example, gas which is an inert gas) supply pipe (not shown) is connected to the through holes 28 and 38 formed in the guide fixing block, the cooling water or the cooling gas to be supplied is provided. Is discharged as it flows through the cooling medium passage.

Therefore, the cooling water or the cooling gas between the guide fixing block and the guide member blocks the transfer of heat of the high temperature material from the guide member to the magnetic saturation coil C side of the fixing block.

In particular, the cooling medium passage 60 is formed naturally between the guide fixing block and the guide member to prevent foreign matter accumulation, such as iron, which is easily sandwiched by a magnetic saturation coil.

As a result, the wire guide device (1) of the surface defect flaw detector according to the present invention does not need to form a separate cooling water passage as in the conventional guide, and thus does not require component processing.

Meanwhile, as shown in FIGS. 7A and 9B, the guide fixing blocks 20 and 30 at the entrance and exit sides of the flaw detector according to the present invention actually include a block body 20a to embed the magnetic saturation coil C therein. 30a) and cover bodies 20b and 30b are assembled together.

In addition, the guide fixing block body may be provided with a ventilation hole (H) for cooling the space in which the magnetic saturation coil is built.

4, the inlet guide 41 may be further assembled to the entrance guide member 40.

Accordingly, the wire guide device (1) of the surface defect flaw detector according to the present invention is easy to assemble and disassemble the parts, so as to form a space in the parts eye without processing a separate cooling water passage, the magnetic saturation coil and flaw detection The device eddy current coil and wire rod spacing is narrower than before, and additional guides and guide rollers will be provided to ultimately improve the surface inspection precision of hot wire.

While the invention has been shown and described in connection with specific embodiments so far, it will be appreciated that the invention can be modified and modified in various ways without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

1 is a schematic view showing a hot wire rolling process and a wire flaw flaw detection equipment

2A and 2B are a perspective view and a schematic view showing the flaw detector and its operating principle of FIG.

Figure 3 is a structural diagram showing the entrance and exit guide structure of the conventional hot wire surface defect inspection apparatus

Figures 4a and 4b is a schematic plan view and side view showing a wire guide device of the surface defect flaw detection apparatus according to the present invention

Figure 5 is a block diagram showing a wire guide device of the surface defect inspection apparatus of the present invention

6a and 6b is an exploded perspective view and assembled state showing a fixed block of the present invention device

7a and 7b is an assembled state diagram and an exploded perspective view showing the flaw detection unit entrance fixed block and the guide member of the present invention device

8a to 8c is a detailed view and a side view showing a cooling medium passage between the fixed block and the guide member of the device of the present invention;

Figure 9a and Figure 9b is an exploded perspective view and assembly state showing the flaw detection device exit fixed block and the guide member of the present invention device

Explanation of symbols on the main parts of the drawings

1 .... Wire guide device of surface defect flaw detector

10 .... device base 12 .... base plate

14 .... Round seat 16 .... Block joint

18 .. Fixed block support 20,30 .... Entry and exit guide fixed block

22,32 .... horizontal coupling 24,34,42,52 .... inclined contact

26,36 .... through hole 28,38 .... bolt fastener

40,50 .... Inlet and outlet guide member 44 .... Bolt fixing groove

54 .... Bolted end 60 .... Cooling medium passage

Claims (6)

A wire guide device for a surface defect inspection device disposed on a flaw detection device side for flaw detection of a surface defect of a hot wire, comprising: an apparatus base disposed on a wire rod propagation path passing through the flaw detection device; A guide fixing block at the entrance and exit of the flaw detector, which is detachably assembled at both sides of the flaw detector and mounted with a magnetic saturation coil; And a flaw detection member entrance and exit guide member for supporting the flaw detection device on both sides and guiding the wire which proceeds while being assembled to form a cooling medium passage in each of the fixed blocks. Horizontal coupling parts are provided at both sides of the guide fixing block, and the device base includes a base block and a fixed block support having a block coupling part vertically installed on the base plate and fastening the horizontal coupling part of the guide fixing block. The guide fixing block and the guide member are in close contact with each other when assembling includes a inclined contact surface to form the cooling medium passage, the guide fixing block is formed with a through hole for supplying a cooling medium in communication with the cooling medium passage, The entrance guide member is provided with a bolt fixing groove for pressing the fastening bolt fastened to the guide fixing block, the exit guide member includes a bolt fixing end is supported by the fastening bolt fastened to the guide fixing block; Wire guide device of configured surface defect flaw detector. The method of claim 1, The device base further includes at least one of a guide and a guide roller disposed at the front and rear of the guide fixing block. The method according to claim 1 or 2, The guide fixing block is formed in a cylindrical shape, the fixed block support vertically installed on the base plate of the device base wire guide device of the surface defect flaw detection apparatus, characterized in that it comprises a circular mounting portion for the cylindrical fixing block is supported. delete delete The method according to claim 1 or 2, The fastening bolt is fastened to a bolt fastener formed at a plurality of points in the radial direction to the protruding end integrally formed in the guide fixing block to press or support the guide member to fix the surface defect flaw detection apparatus. .

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