KR101611785B1 - Heat treatment apparatus of metal rod and method thereof - Google Patents

Abstract

The present invention relates to a heat treatment device for a metal rod and a heat treatment method. The heat treatment device for a metal rod comprises: a pressing transfer unit transferring a plurality of metal rods which are an object to be heat-treated to continuously press the metal rods; an inducing heating unit providing a path which the metal rods transferred by the pressing transfer unit are pressed and continuously passed through, having a working coil for induced heating around the path; a rotation diffusion transfer unit installing first and second rotation rollers to be inclined downwards side by side, wherein the first and second rotation rollers support the metal rod passing through the inducing heating unit such that the metal rod slides downwards, rotating the metal rod in a longitudinal direction as an axis when sliding as the first and second rotation rollers rotate at a same direction; a transfer guide unit having a track member in an upper part of the rotation diffusion transfer unit to perform a caterpillar movement in the longitudinal direction of the first and second rotation rollers, and having a plurality of transfer bars in the track member to push the metal rod such that the metal rod slides; and a cooling sink installed to extend the rotation diffusion transfer unit to an inner side and filled with cooling water in which the metal rod sliding along the first and second rotation rollers sink. According to the present invention, the heat treatment device can evenly heat-treat the metal rod by arranging the working coil for induced heating in a circular tunnel shape to provide heat to the metal rod to be heat-treated; and the heat treatment device enables mass production on a tempered product of the metal rod, and reduces consumption of energy.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat treatment apparatus for a metal rod,

The present invention relates to a heat treatment apparatus for a metal rod and a heat treatment method, and more particularly, to a heat treatment apparatus and a heat treatment method for a metal rod having an excellent heat treatment efficiency and an excellent quenching quality.

Generally, metal materials for manufacturing parts used in automobiles and various industrial fields are heat treated to increase mechanical properties. Such metal materials are made of metal rods and heat-treated in various ways. The metal rods are irradiated with a flame or high-frequency electromagnetic wave while being conveyed at a constant speed, quenched to increase the strength and hardness by quenching them. A continuous heat treatment method is used.

Conventional heating apparatuses for heating metal rods require a lot of power for ending a day's work or for a long time after the operation is stopped. In this case, it takes a long time to raise the temperature to the heat treatment temperature for the heat treatment of the metal rods , There was a problem that efficient work could not be performed.

In order to solve such a conventional problem, Korean Patent No. 10-1240349, entitled " Method and Apparatus for Heat Treatment of a Single Bar by Induction Heating ", discloses a method and apparatus for heating a single rod from an inlet to an outlet of an induction heating furnace The single rods are successively and sequentially injected into the induction heating furnace, heat treatment is performed, and the single rods stacked in a row in the induction heating furnace are sequentially discharged by the force of sequentially feeding the single rods at the inlet of the induction heating furnace, There is a heat treatment method of a single rod through induction heating in which the entire length of the induction heating furnace corresponds to the entire length of the induction heating furnace, and the entire single rod to be introduced into the induction heating furnace is simultaneously discharged by a cooling metal means provided inside thereof.

Such a conventional technique has a disadvantage in that it is not efficient in terms of space utilization and is not a structure that applies heat evenly to the upper, lower, left and right sides of the metal rod because uniform material heat treatment can not be performed It has a problem of not only raising the quality of quenching of the metal rod but also increasing the defect rate of the product.

As a related art related to the heat treatment apparatus, there is disclosed a heat treatment apparatus for an automotive impact beam of Korean Registered Utility Model No. 20-0160805 and a striking apparatus provided at a discharge portion of a heat treatment apparatus of Korean Patent No. 10-1110024 However, these conventional techniques have a difficulty in applying to the efficient quenching of the metal rods, and in the case of the metal rods, it is difficult to guarantee quality for quenching.

In order to solve the above-described problems, the present invention provides a method of manufacturing a semiconductor device, in which a working coil for induction heating is provided in the form of a circular tunnel to provide heat to a metal rod to be heat- It is aimed to make mass production of metal quenching products possible and to reduce the cost by reducing energy consumption.

In addition, the present invention aims at providing a quench-free product by cooling the metal rods after the heat treatment by induction heating so that the metal rods are rotationally slid when they are put into the cooling bath, thereby preventing deformation and cooling uniformly.

According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor device, including: a press-in transferring part for continuously transferring a plurality of metal rods to be heat- An induction heating part for providing a passage through which a plurality of metal rods conveyed by the press-fit conveying part are press-fitted and passed continuously, and a working coil for induction heating is provided around the passage; Wherein the first and second rotating rollers are provided to be inclined downwardly in parallel to each other to support the metal rod that has passed through the induction heating unit so that the metal rod slides downwardly and the first and second rotating rollers rotate in the same direction, A rotation diffusion transmission unit that rotates about the longitudinal axis; A track member is provided on the upper side of the rotary diffusion conveying unit to perform an endless orbit movement along the longitudinal direction of the first and second rotary rollers, and a plurality of conveying bars for pushing the metal rod to slide on the track member are installed A conveyance guide portion; And a cooler which is filled with cooling water for locking the metal rod slid along the first and second rotating rollers by providing the rotation diffusion transmission portion to extend inward.

The first conveyor may be provided to feed the metal rod into the press-fit conveyance unit, and a feeding guide may be installed on both sides of the first conveyor to guide the metal rod into the press-through conveyance unit. have.

Wherein the press-fit transferring portion is provided with a plurality of support rollers along a path for inputting the metal rods into the passage, and is installed such that the conveyance belt moves along the arrangement of the support rollers on an endless track, And a contact guide for guiding the metal rod on both sides of the metal roller on the support roller.

The press-fit transfer section may be provided such that a guide plate for guiding the metal rod, which is separated from the conveyance belt, to be inserted into the passage is provided at the rear end so as to be opposed to each other with the passage therebetween.

And a rotation detection sensor is installed to detect a rotation of the detection wheel by contact with the metal rod passing through the detection wheel and output a detection signal, can do.

The induction heating unit includes a pair of support guides provided along the longitudinal direction on the bottom surface of the passage so as to slidably support the metal rod, and the metal rods passing around the passage are sequentially heated by induction heating A first heating zone in which first and second working coils for heating are installed in front and rear along the longitudinal direction so that the metal rod is primarily heated to 60 to 80% of a target temperature by the first working coil, And a second heating region for secondarily heating the metal rod to a target temperature by a second working coil.

And an atmospheric contact feeding section for feeding the rotary diffusions to the feeding section in such a state that the metal rods which are provided between the rear end of the induction heating section and the front end of the rotary diffusing section are in contact with the atmosphere, .

A temperature sensing unit for sensing a temperature of the metal rod located on the atmospheric contact feeding part; An extracting unit having an extracting unit for extracting the metal rod from the atmospheric contact sending unit to the outside by an extracting and driving unit operating according to a sensing signal of the temperature sensing unit; And an extraction guide for guiding the metal rod extracted by the extraction stand to move outward.

A groove is formed along the outer circumferential surface to rotate and support the metal rod by its own weight or driving force so as to be fed toward the first and second rotating rollers The guide rollers may further include a plurality of guide rollers provided along the longitudinal direction of the first and second rotating rollers.

The apparatus of claim 1, further comprising: an entrance sensing unit and a drain sensing unit, each of which is installed at a front end and a rear end of the rotary diffusion to sense entrance and exit of the metal rod, respectively, And stops when the discharge of the metal rod is detected by the discharge detection unit.

A rising transfer unit for transferring the metal rod from the rotary diffusion transfer unit in the water in the cooling bath to the water surface; And a downward transferring unit for transferring the metal rod from the rising transfer unit and transferring the metal rod outward from the cooling bath.

And a cooling shower part installed to discharge the cooling water downward toward the metal rod conveyed by the rising conveyance part or the falling conveyance part.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, the method including: continuously press-feeding a plurality of metal rods to be heat-treated; Allowing the plurality of metal rods to pass through a passage in which a working coil for induction heating is installed around the heating rods; Rotating the metal rods passing through the passages about the longitudinal direction by rotation of the first and second rotating rollers while slidably sliding the metal rods downward along the longitudinal direction of the first and second rotating rollers; And cooling the metal rods so that the rotating metal rods are submerged in the cooling water of the cooling bath to cool the metal rods.

The step of causing the metal rod to be heated comprises the steps of primarily heating to 60-80% of the target temperature by means of a first working coil for induction heating a metal rod passing around the passageway, The metal rod can be secondarily heated to the target temperature by the second working coil provided at the rear end of the working coil.

And a step of transferring the metal rod passed through the passage in a state of being in contact with the atmosphere to be supplied to the first and second rotating rollers.

The heat treatment apparatus for a metal rod and the heat treatment method according to the present invention have the following effects.

First, by arranging a working coil for induction heating in the form of a circular tunnel to provide heat to the metal rod to be heat treated, it is possible to uniform heat treatment on the metal rod and to reduce the energy consumption for heat treatment, have.

Second, the metal rod to be heat-treated is continuously transferred by sliding into the tunnel of the induction heating unit by pushing, thereby minimizing the deformation in the heat treatment process and uniformizing the heat treatment quality for a plurality of metal rods.

Third, the overall system not only enables mass production of quenching products, but also improves productivity by minimizing defective products.

Fourth, it is possible to select defective heat-treated products and make them accurate, which can contribute to a reduction in the defective rate.

Fifth, the metal rod after the heat treatment by induction heating is cooled while being rotated by the rotating roller when the metal rod is put into the cooling tank, so that the metal rod is uniformly cooled and prevented from being deformed, so that the quality of quenching can be improved.

Sixth, since the cooled metal bar is quickly cooled by the cooling water jetted from the shower head together with the cooling water of the cooling bath, the ease of post-treatment and safety can be achieved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall structural view showing a heat treatment apparatus for a metal rod according to an embodiment of the present invention. FIG.
FIG. 2 is a perspective view showing a press-fit transmission portion of a heat treatment apparatus for a metal rod according to an embodiment of the present invention. FIG.
3 is a plan view for explaining a press-fitting operation of a heat treatment apparatus for a metal rod according to an embodiment of the present invention.
4 is a cross-sectional view illustrating an induction heating unit of a heat treatment apparatus for a metal rod according to an embodiment of the present invention.
FIG. 5 is a perspective view showing a rotary diffusion transmission and conveyance guide unit of a heat treatment apparatus for a metal rod according to an embodiment of the present invention. FIG.
6 is a front cross-sectional view for explaining a rotational diffusion transmission operation of a heat treatment apparatus for a metal rod according to an embodiment of the present invention.
7 is a flow chart illustrating a method of heat treating a metal rod according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a computer system according to an embodiment of the present invention; It is to be understood that this particular embodiment is not intended to limit the invention but includes all modifications, equivalents, and alternatives falling within the spirit of the invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or corresponding elements, and redundant description thereof will be omitted do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall structural view showing a heat treatment apparatus for a metal rod according to an embodiment of the present invention. FIG.

1, the apparatus for heating a metal rod 100 according to an exemplary embodiment of the present invention includes a pressurization transfer unit 120, an induction heating unit 130, a rotary diffusion transfer unit 160, a transfer guide unit 170 and a cooling bath 180.

As shown in FIG. 2, the feed transfer unit 110 may be installed at the front end of the press-through transfer unit 120. The input transfer unit 110 is provided with a first conveyor 112 installed to input the metal rod 1 into the pressurization transfer unit 120 and the metal rod 1 is provided on both sides of the first conveyor 112, And an insertion guide 114 for guiding the insertion of the toner into the developing unit 120 is provided. The first conveyor 112 is installed horizontally by a plurality of pulleys 111 and includes a motor and a first driving part including a rotational force transmitting member such as a gear, a chain, and a sprocket for transmitting rotational force of the motor to the pulley 111, And the metal rod 1 is transported by the endless orbital motion by the metal rod 113. The insertion guide 114 may be installed such that the pair of metal rods 1 are easily placed on the first conveyor 112, and the gap between the pair of the guide rods 114 is narrower toward the lower side.

As shown in Figs. 2 and 3, the press-in transfer section 120 transfers a plurality of metal rods 1 to be heat-treated so as to be press-fit continuously. The press-in transfer unit 120 can be provided with a plurality of support rollers 121 along the path for the insertion of the metal rod 1 into the passage 132, and the transfer belt 121 And a contact guide 125 for guiding each of the conveyance belts 123 on both sides of the metal rod 1 on the support roller 121 may be installed. The conveyor belt 123 may be provided by a plurality of pulleys 122 and may include a motor and a second drive unit including a motor and a rotational force transmitting member such as a gear or a chain and a sprocket for transmitting the rotational force of the motor to the pulley 122 124). The close contact guide 125 can be provided on the inner side of the conveyance belt 123 and can be brought into close contact with the side of the metal rod 1 on the support roller 121 by rotationally supporting the conveyance belt 123 with a roller or the like. As a result, the conveyance belt 123 protrudes on opposite sides to form a tight contact portion 123a for pressing both sides of the metal rod 1. [

The press-fit transfer unit 120 has a guide plate 126 for guiding the metal rod 1, which is detached from the conveyance belt 123, to be inserted into the passage 132 at a rear end thereof, Can be installed.

The input sensing unit 220 may be installed above the pressurization transfer unit 120. The detection sensor 220 detects the rotation of the detection wheel 223 by contact with the metal rod 1 through which the detection wheel 223 passes and outputs a detection signal A detection sensor 224 may be installed. The sensing wheel 223 may be rotatably mounted on a supporting member 222 that is rotatably mounted on a fixed shaft 221 horizontally installed on the upper side of the press-through transfer unit 120. The rotation detecting sensor 224 senses a plurality of sensing holes 223a spaced apart along the rotation center of the sensing wheel 223 to sense the sensing wheel 223 and the metal rod 1 And a detection sensor for detecting the detection signal. An alarm can be generated through an alarm speaker, an alarm lamp or a display unit when the rotation sensor 224 does not detect the movement of the metal rod 1. [

The induction heating portion 130 provides a passage 132 through which a plurality of metal rods 1 conveyed by the indentation conveying portion 120 are press-fit and successively passed, The working coils 134 and 135 are installed.

4, the induction heating part 130 is provided with a pair of support guides 133 on the bottom surface of the passage 132 along the longitudinal direction so as to be parallel to each other so as to slidably support the metal rod 1 And the first and second working coils 134 and 135 for sequentially heating the metal rods 1 passing around the passageway 132 by induction heating are respectively provided back and forth along the longitudinal direction, The first heating zone Z1 and the second working coil 135 which primarily heat the metal rod 1 to a target temperature of, for example, 60 to 80% of the target temperature, for example, about 850 degrees Celsius by the coil 134, ) To a target temperature, for example, about 850 degrees Celsius. The passage 132 may be formed so as to pass through the center of the case 131 of the induction heating portion 130. The first and second working coils 134 and 135 may be installed so as to be wound around the passageway 132 inside the case 131. The heating coils 134 and 135 may be adjusted in accordance with the control signal of the control unit And can be installed inside a single case 131 as in this embodiment, or can be installed in each of the cases 131 separated from each other. The case 131 may be provided with a heat insulating material or a heat resistant material on the inner side.

5, an atmospheric contact transfer unit 140 may be installed between the rear end of the induction heating unit 130 and the front end of the rotary diffusion transfer unit 160. As shown in FIG. The atmospheric contact transfer unit 140 is transferred such that the metal rod 1 having passed the induction heating unit 130 is brought into contact with the atmosphere so that the rotational diffusion is input to the transfer unit 160, And then cooled by the cooling water, thereby contributing to excellent tissue characteristics by quenching the metal rod 1. [ The atmospheric contact transfer unit 140 may be configured such that the second conveyor 142 mounted on the plurality of pulleys 141 performs an endless orbit movement by the operation of the third drive unit 143 so that the metal rod 1 is brought into contact with the atmosphere And the conveyance guides 144 for preventing the metal rods 1 from being separated from each other can be installed on both sides of the second conveyor 142 so as to be opposed to each other.

A temperature sensing part 230 for sensing the temperature of the metal rod 1 positioned on the atmospheric contact transfer part 140 may be installed at one side of the atmospheric contact transfer part 140. For example, can do. An extraction unit 240 provided with an extraction table 241 for extracting the metal rod 1 from the atmosphere contact transfer unit 140 by an extraction driving unit 242 operated according to a sensing signal of the temperature sensing unit 230, May be provided. The extraction drive section 242 may be made of, for example, a cylinder, and the piston rod 243 may be connected to the extraction stand 241. The extraction unit 240 may include a control unit for operating the extraction driver 242 when the metal rod 1 is in a desired temperature range, for example, 800 to 900 degrees Celsius or less, according to a sensing signal of the temperature sensing unit 230 The control unit may be provided separately from the extraction unit 240. [ At the side of the atmospheric contact transfer unit 140, an extraction guide 250 for guiding the metal rod 1 extracted by the extraction base 241 to the outside can be inclined.

The rotating diffusion transmission unit 160 is provided with first and second rotating rollers 161 and 162 for supporting the metal rod 1 that has passed through the induction heating unit 130 to slide downward, The first and second rotating rollers 161 and 162 rotate in the same direction so that the metal rod 1 rotates about the longitudinal direction when sliding. The first and second rotating rollers 161 and 162 are provided so that the shafts at both ends are rotatable by the rotational engaging portions 161a and 162a. For example, the first and second rotating rollers 161 and 162 include a motor and a gear, a chain, And a fifth driving unit 163 including a torque transmission member such as a rotary shaft.

The input guide unit 150 may be installed between the rear end of the atmospheric contact transfer unit 140 and the front end of the rotation diffusion transfer unit 160. The insertion guide unit 150 includes guide rollers 161 and 166 having grooves formed along the outer circumferential surface thereof for rotatably supporting the metal rod 1 by its own weight or by the driving force of the fourth driving unit 153 toward the first and second rotating rollers 161 and 162, (151) may be provided along the longitudinal direction of the first and second rotating rollers (161, 162). A plurality of guide rollers 151 may be arranged to be rotatable by the roller frame 152. The fourth drive unit 153 may include a motor and a torque transmitting member such as a gear, a chain, and a sprocket for transmitting the rotational force of the motor to the guide roller 151 side.

The feed guide section 170 is provided with a track member 172 for performing an endless orbit movement along the longitudinal direction of the first and second rotating rollers 161 and 162 on the upper side of the rotation diffusion conveying section 160, A plurality of feed bars 174 for pushing the metal rod 1 to slide thereon are provided. The track member 172 may be a chain, for example, and may be rotatably installed at both ends by a sprocket 171. The track member 172 may include a motor, a gear, a chain, a sprocket, or the like for transmitting rotational force of the motor to the sprocket 171 The sixth drive unit 173 including the rotational force transmitting member of the sixth embodiment can perform the endless track motion.

The entrance sensing unit 260 and the discharge sensing unit 270 may be installed at the front end and the rear end of the rotary diffusion transfer unit 160 to sense the entrance and exit of the metal rod 1, respectively. The entrance detection unit 260 and the discharge detection unit 270 are installed on the movement path of the metal rod 1 to rotate or turn by contact with the metal rod 1 to turn the switch on or off, Or alternatively, various types of sensors may be used, including optical sensors, proximity sensors, or touch sensors. The transfer guide unit 170 operates when the entrance sensing unit 260 senses the entrance of the metal rod 1 and stops when the metal sensing unit 270 senses the release of the metal rod 1.

The cooling bath 180 is provided with the rotation diffusion spreader 160 extending inward so that cooling water for locking the metal rod 1 sliding along the first and second rotating rollers 161 and 162 is filled, So that quenching of the finished metal rod 1 is performed.

A rising transfer unit 190 for transferring the metal rod 1 from the rotary diffusion transfer unit 160 in the water in the cooling bath 180 and transferring the metal rod 1 over the water surface; And a downward transferring unit 210 for transferring the toner outward from the bath 180 may be provided. The upward movement transmitting portion 190 and the downward movement transmitting portion 210 are made of, for example, a conveyor, and have a surface on which unevenness is formed, so that the metal rod 1 can be raised and lowered.

The cooling shower part 280 may be installed so that the cooling water is discharged downward toward the metal rod 1 conveyed by the upward movement transmitting part 190 or the downward conveying part 210. The cooling shower part 280 has The cooling water is jetted downward by the pumping force of the pump through the shower head 281 installed on the upward transfer section 190 as in the embodiment so as to form a cooling water curtain, Thereby raising the cooling efficiency of the metal rod 1 moving to the upper side of the water surface.

The driving unit of the devices constituting each of the components in the heat treatment apparatus 100 for a metal rod according to an embodiment of the present invention can be controlled according to a process determined by a control unit for quenching by heat treatment and cooling, , Cooling time, and the like can be controlled.

7 is a flowchart illustrating a method of heat treating a metal rod according to an embodiment of the present invention.

7, a method of heat treating a metal rod according to an embodiment of the present invention includes a step S11 of successively press-fitting a plurality of metal rods 1 to be heat-treated, (S12) causing the working coils (134,135) for induction heating to pass while passing through a passageway (132) provided at the periphery; and a step (S12) of passing the metal rod (1) (S14) rotating the first and second rotating rollers (161, 162) about their longitudinal axes while slidably sliding the first and second rotating rollers (161, 162) along the longitudinal direction of the first and second rotating rollers (S15) so as to be submerged in the cooling water of the cooling bath (180).

The step S12 of heating the metal rod 1 is carried out by a first working coil 134 for induction heating the metal rod 1 passing around the passage 132 to a primary And the metal rod 1 can be secondarily heated to the target temperature by the second working coil 135 provided at the rear end of the first working coil 134 around the passage 132. [

The method may further include a step (S13) of transferring the metal bar (1) passing through the passage (132) in a state of being in contact with the atmosphere to be supplied to the first and second rotating rollers (161, 162).

According to the heat treatment apparatus and heat treatment method of a metal rod according to the present invention, a working coil for induction heating is provided in the form of a circular tunnel for providing heat to the metal rod to be heat treated, thereby enabling uniform heat treatment of the metal rod, Cost savings can be achieved by reducing energy consumption. Further, the metal rod to be heat-treated is continuously transferred by sliding into the tunnel of the induction heating unit by press-fitting, thereby minimizing the deformation in the heat treatment process and uniformizing the heat treatment quality for a plurality of metal rods.

Further, according to the heat treatment apparatus and the heat treatment method of the metal rod according to the present invention, not only the whole system can mass-produce the quenched product, but also the productivity of the product can be improved by minimizing the defect rate of the product, So that the metal bar having undergone the heat treatment by the induction heating is cooled while being rotated by the rotating rollers when the metal rod is put into the cooling bath so as to prevent the deformation while being uniformly cooled so as to improve the quality of the quenching . Further, the cooled metal rod is quickly cooled by the cooling water jetted from the shower head together with the cooling water of the cooling bath, thereby facilitating post-treatment and safety.

Although the present invention has been described with reference to the accompanying drawings, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiment, but should be determined by the claims and equivalents thereof.

110: input transmission part 111: pulley
112: first conveyor 113: first driving part
114: insertion guide 120: indentation transmission
121: support roller 122: pulley
123: conveying belt 123a:
124: second driving part 125: tight contact guide
126: guide plate 130: induction heating part
131: Case 132: Passage
133: support guide 134: first working coil
135: second working coil 140: atmospheric contact transmission part
141: Pulley 142: Second conveyor
143: Third driving part 144:
150: input guide portion 151: guide roller
152: roller frame 153: fourth drive section
160: rotation diffusion transmission unit 161: first rotation roller
162: second rotating roller 163: fifth driving portion
170: conveying guide part 171: sprocket
172: track member 173: sixth drive unit
174: Feed bar 180: Cooling tank
190: ascending transmission 210: descending transmission
220: input detection unit 221: fixed axis
222: support member 223: sensing wheel
223a: detection hole 224: rotation detection sensor
230: temperature sensing unit 240:
241: Extracting stand 242: Extraction driving unit
243: Piston rod 250: Extraction guide
260: Entry detection unit 270:
280: cooling shower part 281: shower head

Claims (10)

A press-in transfer section 120 for transferring a plurality of metal rods 1 to be subjected to heat treatment continuously so as to be press-fit;
A plurality of metal rods 1 to be conveyed by the press-in transfer section 120 are press-fitted to provide a passage 132 for continuous passage, and working coils 134 and 135 for induction heating are provided around the passage 132, An induction heating furnace 130 in which the heating furnace 130 is installed;
First and second rotating rollers 161 and 162 for supporting the metal rod 1 having passed through the induction heating portion 130 so as to slide downward are provided to be inclined downwardly in parallel to each other and the first and second rotating rollers 161 and 162 rotate in the same direction to rotate the metal rod 1 about the longitudinal direction when sliding;
The metal rod 1 having been passed through the induction heating portion 130 is transferred in a state in which the metal rod 1 is in contact with the atmosphere, An atmospheric contact transfer unit 140 for allowing the rotational diffusion to be input to the transfer unit 160;
A track member 172 is provided on the upper side of the rotary diffusion conveyance unit 160 to perform an endless track motion along the longitudinal direction of the first and second rotation rollers 161 and 162, A conveyance guide part 170 in which a plurality of conveyance bars 174 for pushing the conveyance belt 1 to slide; And
And a cooler 180 filled with cooling water for locking the metal rod 1 slid along the first and second rotating rollers 161 and 162 by extending the rotation diffusion transmission unit 160 inwardly ,
The pressurization transfer unit 120 is provided with a plurality of support rollers 121 along the path for loading the metal rods 1 into the passage 132, A tight contact guide 125 is provided for guiding the conveyance belts 123 in close contact with both sides of the metal bar 1 on the support rollers 121,
The induction heating portion 130 is provided on the bottom surface of the passage 132 along the longitudinal direction with a pair of support guides 133 arranged side by side so as to slidably support the metal rod 1, The first and second working coils 134 and 135 for sequentially heating the metal rod 1 passing around the circumference of the first working coil 132 by the induction heating are respectively installed forward and backward along the longitudinal direction, The first working zone Z1 for heating the metal rod 1 to 60 to 80% of the target temperature by the first working coil 135 and the second working coil 135 for heating the metal rod 1 to the target temperature 2 , And a second heating zone (Z2) for subsequently heating the metal rods. The method according to claim 1,
The first conveyor 112 is provided to insert the metal rod 1 into the pressurization transfer unit 120 and the metal rod 1 is inserted into the pressurization transfer unit 120 on both sides of the first conveyor 112, Further comprising a feed-in feeder (110) in which a feed guide (114) for guiding the feed-in feeder (114) is inserted. The method according to claim 1,
The pressurization transfer unit 120,
And a guide plate (126) for guiding the metal rod (1) separated from the conveyance belt (123) to be inserted into the passage (132) is provided at the rear end so as to face with the passage therebetween. . The method according to claim 1,
A sensing wheel 223 is installed on the upper side of the pressurization transfer unit 120 so as to be vertically movable and senses rotation by contact with the metal rod 1 through which the sensing wheel 223 passes, Further comprising an input sensing unit (220) for receiving a rotation sensor (224). The method according to claim 1,
A temperature sensing part 230 for sensing the temperature of the metal rod 1 positioned on the atmospheric contact diverting part 140;
An extracting unit 241 provided with an extracting belt 241 for extracting the metal rod 1 from the atmospheric contact conveyance unit 140 by an extraction driving unit 242 operated according to a sensing signal of the temperature sensing unit 230, 240); And
An extraction guide 250 for guiding the metal rod 1 extracted by the extraction stand 241 to move outward;
Further comprising: a heating element for heating the metal rod. The method of claim 5,
The atmospheric contact is provided between the rear end of the transmission part 140 and the front end of the rotary diffusion transfer part 160 and the metal rod 1 is charged into the first and second rotating rollers 161 and 162 And a guide guide part 150 in which a plurality of guide rollers 151 are formed along the longitudinal direction of the first and second rotating rollers 161 and 162 so that grooves are formed along the outer circumferential face And a heat treatment apparatus for a metal rod. The method according to claim 1,
Further comprising an entrance detection unit (260) and a discharge detection unit (270) installed at the front end and the rear end of the rotation diffusion transmission unit (160) to detect entrance and exit of the metal rod (1), respectively,
The conveyance guide unit 170 includes a conveyance guide unit 170,
Wherein the control unit operates when the entry sensing unit 260 senses entry of the metal rod 1 and stops when sensing the discharge of the metal rod 1 by the discharge sensing unit 270. [ The method according to claim 1,
A rising transfer unit 190 for transferring the metal rod 1 from the rotary diffusion transfer unit 160 in the water in the cooling bath 180 and transferring the metal rod 1 over the water surface; And
A descending transfer section 210 which receives the metal rod 1 from the uprising section 190 and transfers the metal rod 1 outward from the cooling tank 180;
Further comprising: a heating element for heating the metal rod. The method of claim 8,
Further comprising a cooling shower part (280) installed to discharge the cooling water downward toward the metal rod (1) conveyed by the uprising part (190) or the downward transfer part (210) Device. delete

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