JPS5939415A - Dry continuous drawing equipment of wire rod - Google Patents

Abstract

PURPOSE:To perform dry continuous drawing of wire rod, and to improve its productivity, by arranging drawing apparatus one after another in series, and performing a lubrication treatment by a dry system. CONSTITUTION:A wire rod 1 uncoiled from a pay-off stand 2 passes through a shot blast device 4 serving as a descaling device through a straightening device 3 of V-H constitution. Next, the wire rod 1 passes through a tank 5 of a substrate agent for lubricant, a tank 7 of a reinforcing lubricant, and a tank 9 of a lubricant used before drawing arranged respectively in a tandem shape; these tanks are equipped with a die 6 for press-sticking the substrate agent for lubricant, a die 8 for press-sticking the reinforcing lubricant, and the 1st drawing die 10 at respective outlet sides. At that time, lime powder as the substrate agent for lubricant, sodium stearate as the reinforcing lubricant, and calcium stearate or a mixture of sodium stearate and slaked lime as the lubricant used before drawing are respectively stored in respective tanks. Further, a flaw detection 13, an automatic readjustment 14, and a secondary drawing 15 are performed in an on- line for the wire rod 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dry wire drawing apparatus for continuously drawing wire rods or steel bars (hereinafter referred to as wire phase). For example, the wire phase is descaled by pickling, then lubricated, then primary wire drawn, then spheroidized annealed to deal with the work hardening caused by wire drawing, and then the second step is pickling and lubrication. After the treatment, secondary wire drawing is performed using a skin.

Conventionally, pickling, lubrication base treatment, and lubrication treatment have been carried out using a batch processing method in which a wire rod coil is lowered 1j-3 by a C-shaped hook, immersed in each treatment liquid tank, and transferred sequentially. As a result, productivity is low and costs are high, pollution control costs for each treatment solution are high, the working environment is not necessarily good because it is a wet process, and full-length inspection is difficult. .

Here, liquid zinc phosphate is used as a conventional lubricating treatment base agent, and as a lubricant, powdered metal soap or a mixture of lime and metal soap is dissolved and used in liquid form. In wire rods for cold forging, the lubricant during wire drawing also serves as lubrication during cold forging, so although it is expensive, the lubrication base is treated with zinc phosphate, which has excellent lubricity. Ta.

On the other hand, in response to increasingly strict quality assurance requirements in recent years, flaw detection and care of drawn wire materials are extremely important processes. However, online flaw detection and automatic maintenance of wire rods is generally very difficult and has been carried out exclusively offline. Specifically, after the drawn wire is wound up, it is inspected in the finishing process using non-destructive or destructive flaw detection equipment, or surface flaws are detected using human eye, and the flaws are detected using a drawing method. In the past, the surface of the drawn wire material was shaved 9 over its entire length using a peeling method or a briding method, relying mainly on human power. However, this is inefficient and uneconomical, as it takes a lot of effort, requires additional equipment space, and complicates transportation work.

On the other hand, in order to remove the above-mentioned surface flaws, in consideration of the fact that in the conventional general case, the entire circumference of the entire length is cut, which reduces the yield.
Recently, development is underway to cut only a predetermined length of the surface flawed portion over the entire circumference. However, since cutting is performed on the entire circumferential surface of the wire in the longitudinal direction, although only partially, a decrease in yield cannot be avoided.

As mentioned above, the inventors of the present invention firstly pointed out that the batch processing method has problems in terms of efficiency and should be changed to continuous wire drawing processing, and secondly, that wet processing requires less work environment and equipment costs. The present invention was completed after conducting repeated experimental research with the aim of making the process of flaw detection and care online. I ended up doing it.

Since this application includes many inventions, we will first explain the common configuration up to the primary wire drawing, and later explain various aspects after the primary wire drawing. In Fig. 1, a wire 1 is wound into a coil shape. After being installed in the payoff stand 2 in a rotated state, it is passed through the wire drawing line.
The tip of the wire rod 1 is thinned in the previous process by passing the pre-processed tip through it. The wire rod 1 fed out from the O payoff stand 2 passes through the straightening machine 3 with the In this shot blasting device 4, appropriate shot particles and projection density are set, and oxide films and the like on the surface of the wire 1 are removed.

Next, the wire l is placed on the outlet side of the tank by a lubricating base agent crimping die 6, a reinforcing lubricant crimping die 8, and a first wire drawing die 1.
It passes through a lubricating base agent tank 5, a reinforcing lubricant tank 7 and a pre-dice lubricant tank 9 in tandem arrangement. Each of these types contains lime powder as a lubricating base agent, a reinforcing lubricant such as sodium stearate, and a pre-die lubricant such as calcium stearate or a mixture of sodium stearate and slaked lime. It passes through the base agent tank 5 and passes through the lubricant base agent crimping die 6. At that time, lime powder adheres to the wire rod 1, and since the hole diameter of the crimping die 6 is previously selected to be a predetermined diameter slightly larger than the diameter of the target wire rod 1, the wire rod 1 passes through the hole of the crimping die 6. At this time, the lime powder that has just adhered and the surrounding lime powder are conversely squeezed between the hole surface and the surface of the wire 1, and the lime powder is crimped onto the surface of the wire 1. The lime powder acts as a base for the lubricant and enhances the adhesion of the subsequent reinforcing lubricant and pre-die lubricant. In addition to slaked lime, quicklime can also be used as the lime powder, but quicklime often causes problems in handling, so slaked lime is preferable. The particle size is preferably 2μ or more.

Next, the wire 1 passes through a reinforcing lubricant tank 7 and a reinforcing lubricant crimping die 8, but at this time, in the same way as in the case of lime powder described above, reinforcing The lubricant is crimped.

As this reinforcing lubricant, sodium stearate is used.0 When using sodium stearate, 2μ
If it is below, the amount of adhesion will be reduced due to the so-called tunnel effect passing through the fluffy powder, and the lubricating effect will be insufficient. should be carried out, but may be omitted if the strength is such as when drawing a low-strength material.

Thereafter, it is guided to the pre-dice lubricant tank 9. In this tank, calcium stearate or a mixed lubricant of sodium stearate and lime is stored as a pre-die lubricant, and the lubricant is deposited on the surface layer of the wire 1.Then, the wire 1 is passed through the first wire drawing die 10. Primary wire drawing is achieved at a predetermined processing rate.

In the above example, a hole die is shown as the die 6.8.10, but a roller die may also be used.

Although the above example uses a shot blast 4 as a mechanical descaler for mechanically descaling, a roll bender 40 may also be used as shown in FIG. 2. The roll bender 40 repeatedly bends and stretches the wire 1 to crack and peel the scale layer, and also functions as a straightening machine, and its elongation rate is appropriately selected. It goes without saying that the roll bender 40 and the shot blast 4 may be used together as a mechanical descaler.

Here, the main features of the present invention will be explained in detail in comparison with the conventional system. The present invention performs a dry continuous wire drawing process.

Conventional batch processing methods are inefficient and uneconomical, but
If the wire drawing process is continuous as in the present invention, the line speed can be set to about 120 m/min, for example, and the processing efficiency is significantly improved.

The present invention employs a dry method for continuous wire drawing processing. Conventionally, it is known that a dry pre-die lubricant is provided on the entrance side of a wire drawing die, and that the lubricant is applied to draw the wire. However, on the other hand, according to the present invention,
It is advisable to perform lubrication base treatment and, if necessary, reinforcement lubrication treatment in a dry manner.Moreover, lime powder is used as the lubrication base treatment agent. Conventionally, zinc phosphate, which is expensive but has excellent lubricity, has been used as a lubricating surface treatment agent. Since zinc phosphate is in a liquid state, it cannot be applied to the present invention by dry processing. Therefore, as an alternative to zinc phosphate treatment, lime powder is used.The drawn wire material obtained by the lubrication base treatment using lime powder and the dry lubrication treatment does not necessarily have the properties of the surface skin, etc. It is not superior to wire drawn material obtained by the conventional typical wet method of pickling, zinc phosphate base, and metal soap (or lime/metal soap mixture) lubrication. However, the second wire drawing process is a preliminary one before the second wire drawing process.
Since the properties of the surface skin and the like can be improved in the secondary wire drawing process, even the simple method of the present invention can sufficiently achieve its purpose and is rather reasonable.

The greatest advantage of using this dry method is that the line length can be shortened and equipment costs can be reduced. For example, if we try to perform continuous processing using a wet method, the lubricating base treatment and lubrication treatment require a considerable amount of reaction time in order to obtain the desired film thickness, which requires a correspondingly large amount of equipment. In this case, each small tank and die are required, and the above-mentioned advantages are brought about. Furthermore, the work environment is improved in that acids are not used. Furthermore, sodium stearate or lime/calcium stearate is generally in powder form, and conventionally this is used after being dissolved for wet processing, but in dry processing, it can be used as is and is extremely easy to handle. There is.

On the other hand, the wire drawn in this manner has inherent material flaws, handling flaws, and die flaws caused by seizure in the wire drawing die. Furthermore, among material defects, internal defects cannot be repaired. Furthermore, some surface defects are impossible to repair or are not suitable for maintenance.

In the present invention, such drawn wire material is processed in the following manner on the same line.

FIG. 3 shows a first example of the invention. A wire feed speed meter 11 is provided to detect the wire feed speed of the wire drawn material 1' after the above-mentioned primary wire drawing. The speed signal is taken into the control unit 12 and used for speed control via a winder, which will be described later. Following the speedometer 11, a surface flaw detector 13 such as an eddy current flaw detector is provided. The surface flaw status signal from the surface flaw detector 13 is input to the control unit 12, and based on this command, the surface flaw detector 13
An automatic care device 14 disposed next to the surface is operated to remove surface flaws. The wire rod after maintenance is further drawn by a second wire drawing die 15 to improve the surface texture, and then wound up by a winder 16.

Here, the speed meter 11 detects the wire feeding speed after wire drawing. Basically, the installation location of the speed cutter 11 may be downstream of the wire drawing die 10, and may be located next to the flaw detector 13.

Alternatively, it may be detected from the winding machine's 150 rotation speed. The wire feeding speed may be arbitrarily selected depending on the horsepower of the wire drawing material, but as an example, when the wire diameter is 10 to 15 mm, it is 60 to 80 m /
For Tnm s 15-20 dragons, 40-60m/”
In the case of 20 to 25 mm, the surface flaw detector is 20 to 40 m 1 mm.Although an ultrasonic flaw detector can be used as the surface flaw detector 13, an eddy current flaw detector is preferable in terms of detection ability and stability. The flaw detector 13 detects the position of the flaw, that is, the angular position on the circumference and the distance in the longitudinal direction, and also detects the depth of the flaw. The control unit 12 determines the position in the length direction.

Surface flaws detected in this way are automatically cleaned by the automatic cleaning device 14 based on instructions from the control unit 12. The automatic care device 14 includes a grindstone,
A surface flaw treatment tool such as a belter or a cutting tool is made to revolve around the drawn wire material 1', and when the surface flaw portion reaches this position, it is rapidly brought into contact with the surface of the drawn wire material 1',
If the position of the cutting tool and the position of the surface flaw are misaligned in the circumferential direction, start cleaning after rotating the tool and positioning it. Specifically, the idea of Japanese Patent No. 488978 can be applied. If necessary, a plurality of care tools may be provided circumferentially. Furthermore, the care should be slightly larger than the length, depth, and spread of the relevant surface flaw. In order to improve yield, it is necessary to perform the cleaning only on the surface flaw in the circumferential direction, rather than on the entire circumference of the surface flaw. If tracking is not possible, if a surface flaw is detected, when the flaw reaches the care device 14, the winder 15 is directed from the control unit 12 to remove the accompanying winding. By slowing down or stopping the feed motor through the speed control circuit, the feed line can be slowed down or stopped, making maintenance easier. After cleaning, the speed will return to normal.

As shown in Figure 4, the surface of the wire usually becomes zero due to care.
．． Since the portion a) is removed to a depth of about 1 to 0.5 mm, if left as is, a cleaning mark 11a will remain, which is not preferable depending on the use of the product. Therefore, this care trace 1'
In order to eliminate a and obtain a uniform diameter over the entire circumference of the wire, the second wire is drawn by the second wire drawing die 15.
The wire drawing die 15 has the same structure as the first wire drawing die 10, and may be a hole die or a roller die. The secondary wire drawing can also be treated with a lubricant if necessary. This second wire drawing die 15 is installed at the next stage of the automatic care device 14. As in the invention example described later, when detecting and marking an internal defect, or when marking a surface flaw detected by the surface flaw detector 13 that cannot be automatically cleaned, the second wire drawing die 15 is used. must be placed before marking, that is, before internal defect markers or satin flaw markers. This is because if marking is done before wire drawing, there is a risk that the mark will disappear due to wire drawing.0 Figure 5 shows the second invention example, where surface flaws detected by flaw detector 13 are For example, if the depth reaches a depth of approximately 0.2 mm or more, or if there are many defects on the same cross section, which exceeds the capacity of the automatic care device 14, the part should be manually cleaned to a depth that is within the ability of the automatic care device 14. Marking is carried out using the satin flaw marker 17 according to a command from the control unit 12 without having to enter or take care of the material, and the flaws in the satin flaw are taken care of off-line after winding. 0 In this case, it is desirable that the satin flaw marker 17 be made to revolve around the drawn wire material 1' so as to cover the entire circumferential surface. Alternatively, a plurality of unit markers may be provided in the circumferential direction, and if a flaw corresponding to the corresponding section is detected, it may be marked. They can be distinguished by color-coding depending on the depth of the flaw and type of flaw, or by the amount of jetting.

In the example of the present invention, the second wire drawing die 15 is the automatic care device 1.
4 and the satin flaw marker 17.

FIG. 6 shows the third and fourth invention examples, in which the automatic care device 14
Next, a second elongated seven-gland die 15 is installed, followed by an ultrasonic flaw detection device 18 such as a water immersion type, which detects internal defects that cannot be repaired, and places a satin flaw marker following this internal defect position. This is intended to operate an internal defect marker 19 having a configuration similar to that of the control unit 17 based on commands from the control unit 12. If there is an internal defect, the part should be scrapped or not used after winding.

In the case of this example of the invention, the second wire drawing die 15 can also be installed between the ultrasonic flaw detection device 18 and the internal defect marker 19 instead of the arrangement example shown in FIG. In this case, the control unit 12 stores the defective part detected by the ultrasonic flaw detection device 18, calculates the elongation length of the wire drawn by the second wire drawing die 15, and corresponds to the defective part. Care must be taken to ensure that markings are placed on the surface of the wire.

FIG. 7 shows the fifth invention example, where the line in FIG.
An untreated flaw marker 17 is provided between the wire drawing die 15 and the ultrasonic flaw detector 18.

Instead of the illustrated arrangement, the untreated flaw marker 17 is provided after the ultrasonic flaw detection device 18, and the second wire drawing die 15 is placed between the automatic care device 14 and the ultrasonic flaw detection device 18 or Flaw detection device 18 and untreated flaw marker 17
It may be installed between 0 and 0. In the former case, the length of elongation due to wire drawing with the second wire drawing die 15 must be considered in marking with the untreated flaw marker 17, and in the latter case, in marking with the untreated flaw marker 17 and the internal defect marker 19. Must be.

FIG. 8 shows the sixth invention example, in which the automatic care device 14
and second wire drawing die 15 followed by second surface flaw detector 2
0 is provided, it is detected whether or not there are any untreated defects by the automatic maintenance device 14, and if there are any untreated defects, the untreated defect marker 17 is used to indicate the defect.

FIG. 9 shows a seventh invention example, in which an ultrasonic flaw detector 18 and an internal defect marker 19 are added following the untreated flaw marker 17 to the same line configuration as FIG. 8. It is.

In the sixth and seventh invention examples as well, the second wire drawing die 15 is located at the rear of the automatic care device, as in the other invention examples.
Moreover, it can be provided at any position in front of the markers 17 and 19.

The example shown in FIG. 9 is optimal as it can deal with all kinds of situations, but the example shown in FIG. 6 is the most practical when considering equipment costs and the like.

On each of the above sides, it is desirable that the devices be arranged in the order shown, but it is also possible, for example, to detect internal defects first and then detect surface flaws, or to change the position of the marker. It is also possible to detect internal defects and surface flaws at the same time.

As an example, the applicant's previous patent application No. 57-2
As described in Japanese Patent No. 7868, a method based on discrimination of the waveform of an ultrasonic flaw detection signal can be mentioned.

In this way, flaw detection, automatic maintenance, and secondary wire drawing are performed on the drawn wire material online, which not only reduces maintenance man-hours, saves installation space, and eliminates transportation work, but also enables high-speed processing. 9. It is extremely effective in terms of quality assurance as it allows for a defect-free shipping system.

Next, the present invention will be explained in further detail based on examples.

Example 1 Wire drawing was carried out using wire drawing equipment having the same configuration as shown in FIGS. 1 and 5. The wire material is 545C and has a rating of 16.0+
It is an As roll material of ++mφ. This was drawn under the following conditions.

(a) Descaling conditions Steel balls with an average particle diameter of 0.3 mmφ are heated to approximately 300 kg.
Shot blasting is carried out at a projection density of g/rrj.

(b) Lubricating conditions Lime powder with an average particle size of 15μ is used as a lubrication base, and the average particle size is 12μ.
．． Reinforcement lubrication with 5μ sodium stearate and pre-die lubrication with lime/calcium stearate.

(c) Wire drawing conditions: die angle 2α = 20° and bearing length 05d (
d: 13.5 m at a wire drawing speed of 41 m/min and an area reduction rate of 28.9% using the first and second wire drawing dies (dice diameter).
A drawn wire material of mφ was obtained. Note that the first wire drawing die and the second
The area reduction rate distribution with the expansion and gland dies is L6mmφ → 15mmφ
(area reduction rate distribution = 12th section) → 13.5 mmφ (area reduction rate =
Section 19).

B) Flaw Detection Conditions Surface flaws are detected using a rotating probe type eddy current flaw detector at a phase angle of 130° and a flaw detection frequency of 64 kHz. Further, internal defects were detected using a water immersion ultrasonic flaw detector at a flaw detection frequency of 20 MHz.

(e) Automatic maintenance conditions Local (not all circumferential) automatic maintenance using 32-part type and one-grinder type.

A comparison between this wire drawing method and a comparative example in which only pre-die lubrication was performed is shown in Table 1. In the table, die life indicates the amount of wire drawn until the wire drawing die seizes. The absence of seizure means that the wire rod has good lubricity, so it is a measure of the quality of the resulting drawn wire material.From Table 1 above, it can be seen that the method of the present invention produces a high quality wire drawn material. It is clear that it is possible to obtain 0. Table 2 shows the results of investigating the amount of adhesion while varying the average particle size of sodium stearate.

If the average particle diameter is less than 2 μm, a so-called tunneling phenomenon occurs, and a satisfactory adhesion amount cannot be obtained, making it impractical.Furthermore, Table 3 shows the results of examining the effect of healing marks caused by secondary wire drawing.

As is clear from Table 3, it is believed that the repair marks can be sufficiently healed by the secondary wire drawing, especially when the area reduction rate in the secondary wire drawing is 19
It has been found that when the thickness is set to qb or more, cleaning marks up to 0.50 im can be completely removed.

Furthermore, by performing up to the secondary wire drawing on-line, the area reduction rate of each wire drawing die can be lowered, and the life of the die can be significantly extended. at the same time,
-The wire-drawing skin was significantly improved compared to the wire-drawing method. Note that the area reduction rate distribution in the -th and secondary wire drawings is based on the finished wire diameter of 9 (the area reduction rate in the -th stage wire drawing affects the secondary wire drawing as a pack tension, resulting in a draw thinness υ). It is necessary to take this into consideration and make appropriate selections based on the U-Prize, etc.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the line configuration in wire drawing 1 of the present invention device, Fig. 2 is a schematic diagram of a different example, and Fig. 3 is an example of the line configuration from wire drawing to winding. Schematic diagram shown, No. 4
The figure is a schematic diagram showing another example of a line configuration showing care marks. 1...Wire rod, 1...Wire drawing material, l'a...Care trace, a...
・Care depth, 2. Payoff stand, 3. Straightening machine, 4.° shot blasting device, 4o. Roll bender, 5. Lubricating base agent tank, 6. Lubricating base agent crimping die, 7. Reinforced lubricant tank, 8 Reinforced lubricant crimping die, 9
...Die front lubricant tank, 1°...First wire drawing die, 11
... Wire feed speed meter, 12 ... -t, 13 ... (first) surface flaw detector, 14 ... automatic care device, 15 ... second wire drawing die, 16 ... winding machine, 17...Satin flaw marker, 1
8...Ultrasonic flaw detection device, 19...Internal defect marker, 2
o...Second surface flaw detector. Patent applicant: Sumitomo Metal Industries, Ltd. Procedural amendment (spontaneous) March 20, 1980 Commissioner of the Patent Office Kazuo Wakasugi 1, Indication of the case 1982 Patent application No. 148147 2, Title of invention Dry continuous stretching of wire rod Line device 3, Relationship with the person making the amendment Patent applicant 4, agent 〒136 (1) The detailed description of the invention in the specification will be corrected as follows. (b) Page 10, lines 2 to 5 [defects...
0" was changed to ``The flaws were removed using a grinder, etc., relying on manual labor9." (B) Page 10, line 10 [-1 because the entire length and circumference are cut
``This is because the entire circumference of the entire length is cut using the same principle as a die bee ring or a lathe.'' (c) Page 19, lines 13 to 15 [Specifically...
····can. ] Delete. ) Page 27, lines 9 and 10, “32-division type,...
...Due to automatic maintenance. ” is divided into 36 sections in the circumferential direction,
This method is based on a method of automatically cleaning only the areas where surface flaws exist on the inner surface of a cylindrical rotating grindstone. ]C. (E) The table on page 28 is amended as follows. (2) Replace drawings, Figures 3, 5, 6, 7, 8, and 9 with attached drawings (zero or more)

Claims (7)

[Claims] (1) A payoff stand for paying out the wire rod, a mechanical descaling device for removing the kale on the wire rod,
A lubrication base treatment device equipped with a crimping die for crimping a powdered lubrication base agent onto the wire surface, a die pre-dry lubrication treatment device, a first wire drawing die for drawing the wire after the lubrication treatment, and a drawing die for drawing the wire after the lubrication treatment; a surface flaw detector for detecting the surface flaw condition of the wire rod; an automatic care device for removing the surface flaw portion of the drawn wire material; and an automatic care device for receiving the surface flaw condition signal from the surface flaw detector. The present invention includes a control unit that gives a maintenance signal, a second wire drawing die for further drawing the wire after the maintenance, and a winding machine for winding the wire after the secondary drawing, and the control unit. 1. A dry continuous wire drawing apparatus for wire rods, characterized in that each of the above-mentioned devices except for the above devices are sequentially arranged in series. (2) A payoff stand for feeding out wire rods and a mechanical descaling device for removing schools of wire rods;
A lubrication base treatment device equipped with a crimping die for crimping a powdered lubrication base agent onto the wire surface, a die pre-dry lubrication treatment device, a first wire drawing die for drawing the wire after the lubrication treatment, and a drawing die for drawing the wire after the lubrication treatment; a surface flaw detector for detecting the surface flaw condition of the wire rod; an automatic care device for removing the surface flaw portion of the drawn wire material; and an automatic care device for receiving the surface flaw condition signal from the surface flaw detector. A control unit that gives a maintenance signal, a second wire drawing die for further drawing the wire after maintenance, and a mark on the detected surface flaws that cannot be automatically repaired by the control unit or a run command. 1. A dry continuous wire drawing device comprising a satin flaw marker and a wire winding machine, and characterized in that each of the above-mentioned devices except a control unit is sequentially arranged in series. (3) a payoff stand for paying out the wire rod and a mechanical descaling device for removing scale from the wire rod;
A lubrication base treatment device equipped with a crimping die for crimping a powdered lubrication base agent onto the wire surface, a die pre-dry lubrication treatment device, a first wire drawing die for drawing the wire after the lubrication treatment, and a drawing die for drawing the wire after the lubrication treatment; A surface flaw detector that detects the surface flaw state of wire rods, an automatic care device that removes only the surface flaws of drawn wire rods,
a control unit that receives a surface flaw status signal from the surface flaw detector and sends a care signal to an automatic care device; a second wire drawing die for further drawing the wire material after care;
An ultrasonic flaw detector is used to detect internal defects in wire rods after maintenance, and markings are placed on the wire surface corresponding to internal defects based on instructions from a control unit that receives internal defect signals from this ultrasonic flaw detector. an internal defect marker to be attached;
A dry continuous wire drawing device comprising a winding machine for winding a wire. (4) a payoff stand for paying out the wire rod, and a mechanical descaling device for removing scale from the wire rod;
A lubricating base treatment device equipped with a crimping die for crimping a powder lubricating base agent onto the wire surface, a reinforcing lubrication processor equipped with a crimping die for crimping a reinforcing lubricant onto the lubricating base treatment agent, and a die. A pre-dry lubrication treatment device, a first wire drawing die for drawing the wire after the lubrication treatment, a surface flaw detector for detecting the surface flaw state of the wire drawing material, and a surface flaw detector for removing surface flaws of the wire drawing material. a control unit that receives a surface flaw status signal from the surface flaw detector and sends a care signal to the automatic care device; and a second drawing device for further drawing the wire after being treated. A wire die, an ultrasonic flaw detection device for detecting internal defects in the wire rod after treatment, and a wire rod that corresponds to the internal defect portion based on instructions from a control unit that receives internal defect signals from the ultrasonic flaw detection device. An internal defect marker that marks the surface, a wire feed speed meter that detects the wire feed speed, and a winding speed that can be reduced when removing defects based on the speed signal from the wire feed speed meter while winding the wire. 1. A dry continuous wire drawing device for wire rod, characterized in that it is equipped with a variable winding machine. (5) a payoff stand for paying out the wire rod, and a mechanical descaling device for removing scale from the wire rod;
A lubrication base treatment device equipped with a crimping die for crimping a powdered lubrication base agent onto the wire surface, a die pre-dry lubrication treatment device, a first wire drawing die for drawing the wire after the lubrication treatment, and a drawing die for drawing the wire after the lubrication treatment; a surface flaw detector for detecting the surface flaw condition of the wire rod; an automatic care device for removing the surface flaw portion of the drawn wire material; and an automatic care device for receiving the surface flaw condition signal from the surface flaw detector. A control unit that gives a maintenance signal, a second Okisen die for further drawing the wire after maintenance, and marks on the detected surface defects that cannot be automatically repaired according to a command from the control unit. A satin flaw marker is attached to the wire, an ultrasonic flaw detector is used to detect internal flaws in the wire after the wire has been cleaned, and an internal flaw marker is detected based on instructions from a control unit that receives internal flaw signals from the ultrasonic flaw detector. A dry continuous wire drawing device characterized by comprising an internal defect marker that marks the corresponding wire surface and a winder that winds up the wire. (6) a payoff stand for paying out the wire rod and a mechanical descaling device for removing scale from the wire rod;
A lubricating base treatment device equipped with a crimping die for crimping a powder lubricating base agent onto the wire surface, a pre-dice dry lubrication treatment device, a first wire drawing die for drawing the wire rod after the lubrication treatment, and a a first surface flaw detector that detects the surface flaw state of the wire;
an automatic care device for removing surface flaws from wire drawing material;
a control unit that receives a surface flaw status signal from the first surface flaw detector and gives a care number to an automatic care device; and a second wire drawing die for further drawing the wire after the care. The second step is to detect surface flaws remaining on the wire after cleaning.
It is equipped with a surface flaw detector, a satin flaw marker that marks the satin flaw portion of the wire according to a command from a control unit that receives a signal from the second surface flaw detector, and a winder that winds the wire. , and a dry continuous wire drawing apparatus characterized in that each of the above-mentioned devices except a control unit is sequentially provided in series. (7) a payoff stand for paying out the wire rod and a mechanical descaling device for removing scale from the wire rod;
A lubrication base treatment device equipped with a crimping die for crimping a powdered lubrication base agent onto the wire surface, a die pre-dry lubrication treatment device, a first wire drawing die for drawing the wire after the lubrication treatment, and a drawing die for drawing the wire after the lubrication treatment; a first surface flaw detector that detects the surface flaw state of the wire;
an automatic care device for removing surface flaws on wire drawing material;
a control unit that receives a surface flaw status signal from the first surface flaw detector and sends a care signal to an automatic care device; a second wire drawing die for further drawing the wire after the care; The second step is to detect surface flaws remaining on the wire after it has been wired.
Based on commands from the surface flaw detector and the control unit that receives signals from this second surface flaw detector! An untreated flaw marker that marks untreated flaws on the LLI material, an ultrasonic flaw detector to detect internal defects in the wire, and a control unit that receives internal flaw signals from the ultrasonic flaw detector. 1. A dry continuous wire drawing device for a wire rod, characterized in that it is equipped with an internal defect marker for marking the surface of the wire rod corresponding to an internal defect portion based on the internal defect portion, and a winder for winding up the kneaded material.