KR101816899B1 - Method for preventing lead-segregation of apparatus for preventing lead-segregation with preheater - Google Patents

Abstract

The present invention relates to a method to prevent lead segregation of a lead segregation prevention apparatus with a preheater. The apparatus comprises: a centrifugal casting device (100) to shape molten metal of a lead bronze material by centrifugal casting; the preheater (500) to eject flame towards the centrifugal casting device (100) on one longitudinal side surface of the centrifugal casting device (100); and an injection device (200) to inject cooling water towards the centrifugal casting device (100) on both longitudinal side surfaces of the centrifugal casting device (100). According to the present invention, the method comprises: a step of preheating the centrifugal casting device (100) with the preheater (500); a step of injecting the molten metal of the lead bronze material as soon as preheating is stopped, so as to operate the centrifugal casting device (100); and a step of injecting the cooling water on a surface of the centrifugal casting device (100) with the injection device (200) as soon as operation of the centrifugal casting device (100) is stopped, so as to quench the centrifugal casting device (100) and a lead bronze product formed inside the centrifugal casting device (100), thus preventing lead segregation from being formed on the lead bronze product. The preheater is installed in the lead segregation prevention device, thus providing effects of preventing the lead segregation as the centrifugal casting device, which makes making a product with lead bronze melting the lead bronze material, is sufficiently preheated before forming, and of allowing a forging work together with a casting work to manufacture the lead bronze product excellent even in hardness.

Description

[0001] The present invention relates to a method for preventing segregation of a lead segregation prevention apparatus having a preheater,

More particularly, the present invention relates to a method for preventing segregation of a lead segregation prevention apparatus equipped with a preheater, and more particularly, to a method for preventing segregation of a lead segregation prevention apparatus having a preheater, which comprises forming a centrifugal casting apparatus for manufacturing a copper- The present invention relates to a method for preventing lead segregation in a lead segregation prevention apparatus having a preheater for preventing preformed preheating and forming a leaded sheet copper product by quenching the formed leaded copper product.

Lead bronze is a bronze containing 1.5 to 40% lead and is mainly used as a bearing alloy.

As a conventional technique for manufacturing a copper-bronze copper alloy product, there is disclosed in Patent Registration No. 1194218 a copper alloy containing 0.1 wt% or less of lead (Pb), 8.0 to 13.0 wt% of zinc, 3.0 to 6.0 wt% of silicon, 1.5% by weight or less of nickel, 1.0% by weight or less of nickel, 0.7-2.50% by weight of bismuth, 1.50% by weight or less of aluminum and 0.30-1.0% by weight of selenium, ) And an unavoidable impurity are registered and disclosed in a lead-free bronze alloy for mold casting.

Another prior art is a bimetallic type sliding material made of a steel sheet or equivalent surface-coated steel sheet and a sintered copper alloy bonded to the steel sheet in Patent Publication No. 1990-0004494, wherein the composition of the copper alloy is Sn Wherein the graphite-containing coercive-layer-sliding material is at least one selected from the group consisting of Cu: 5 to 16 wt%, Pb: 2 to 20 wt%, P: 0.03 to 1 wt%, graphite: 0.5 to 4 wt% .

However, when producing a copper-copper alloy product by centrifugal casting, the centrifugal casting device for producing a copper-copper alloy product in which the ferrite copper material is melted is not fully preheated before molding, and therefore, a lead having a relatively large specific gravity is segregated by centrifugal force .

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a preheating device for a lead segregation prevention device, The present invention is to provide a lead segregation prevention method of a lead segregation prevention apparatus provided with a preheater capable of producing forged steel products with good hardness even in casting work and forging.

The present invention relates to a method for preventing segregation of a lead segregation prevention apparatus equipped with a preheater, which comprises a centrifugal casting apparatus (100) for forming a molten metal melt by centrifugal casting, A centrifugal casting apparatus 100 is provided with a preheater 500 for spraying a spark toward a centrifugal casting apparatus 100 and a jetting apparatus 500 for spraying cooling water toward both sides of the longitudinally- (200) is installed, the method comprising the steps of:

The centrifugal casting apparatus 100 is preheated by the preheater 500 and the molten metal melt is injected immediately after the preheating is stopped to operate the centrifugal casting apparatus 100. When the centrifugal casting apparatus 100 is operated, The cooling water is sprayed onto the surface of the centrifugal casting apparatus 100 as the injector 200 to quench the coiled product formed in the centrifugal casting apparatus 100 and the centrifugal casting apparatus 100, To prevent the formation of lead segregation in the lead frame.

Therefore, according to the present invention, since the preheater is installed in the lead segregation prevention device, the centrifugal casting device for manufacturing the copper and bronze copper product which melts the copper-based copper material is sufficiently preheated before molding to prevent the lead from being segregated, It is possible to produce an excellent copper-free copper product.

1 is a perspective view of a lead-free seismic prevention joint having a preheater according to the present invention.
2 is an outline view of a centrifugal casting apparatus for manufacturing a product of the present invention.
3 is a cross-sectional outline view of a centrifugal casting apparatus for manufacturing a ferritic copper product according to the present invention.
4 is a perspective view of the preheater of the present invention.
Fig. 5 is a perspective view of a spraying apparatus for manufacturing a product of the present invention; Fig.
6 is an outline view of the fixing member of the present invention.
FIG. 7 is a schematic diagram of another embodiment of manufacturing the ferromagnetic copper product of the present invention. FIG.
8 is an enlarged view of the closure plate of the present invention.
Fig. 9 is an enlarged view showing a state in which the auxiliary screening plates of the clinging plate of the present invention are coupled to each other.
10 is a perspective view of another embodiment of a vertical frame of the present invention.
11 is a sectional view of still another embodiment of the vertical frame of the present invention.

The present invention relates to a method for preventing segregation of a lead segregation prevention apparatus equipped with a preheater, which comprises a centrifugal casting apparatus (100) for forming a molten metal melt by centrifugal casting, A centrifugal casting apparatus 100 is provided with a preheater 500 for spraying a spark toward a centrifugal casting apparatus 100 and a jetting apparatus 500 for spraying cooling water toward both sides of the longitudinally- (200) is installed, characterized in that the pre-

The centrifugal casting apparatus 100 is preheated by the preheater 500 and the molten metal melt is injected immediately after the preheating is stopped to operate the centrifugal casting apparatus 100. When the centrifugal casting apparatus 100 is operated, The cooling water is sprayed onto the surface of the centrifugal casting apparatus 100 as the injector 200 to quench the coiled product formed in the centrifugal casting apparatus 100 and the centrifugal casting apparatus 100, To prevent the formation of lead segregation in the lead frame.

The preheater 500 includes a gas pipe 530 disposed on one side of the centrifugal casting apparatus 100 in the longitudinal direction of the centrifugal casting apparatus 100 in parallel with the centrifugal casting apparatus 100; A plurality of openings 580 spaced apart from one another so that the gas inside the gas pipe 530 is burnt and sparks are blown toward the centrifugal casting apparatus 100; A vertical frame 510 supporting the gas pipe 530 at a predetermined height from the ground; A gas hose 540 connected to one end of the culvert 580 to supply gas into the gas pipe 530; And a gas valve for controlling the supply of gas from the gas hose 540 to the gas pipe 530.

The centrifugal casting apparatus 100 further includes a cylindrical body 110 having a space in which a molten metal melt is melted and a bottom surface of the main body 110 in contact with the bottom surface of the main body 110, A plurality of rollers 120 supporting the plurality of rollers 120, and a drive motor 130 driving the plurality of rollers 120.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view of a centrifugal casting apparatus for manufacturing the present invention. FIG. 3 is a perspective view of a centrifugal casting apparatus for manufacturing the present invention. Fig. 5 is an outline view of the present invention, Fig. 4 is a perspective view of the preheater of the present invention, Fig. 5 is an outline view of a jetting apparatus for manufacturing the present invention, Fig. Fig. 9 is an enlarged view of a cover plate of the present invention, Fig. 9 is an enlarged view showing a state in which auxiliary cover plates of the cover plate of the present invention are coupled to each other, Fig. 10 is a perspective view of another embodiment 11 is a sectional view of still another embodiment of the vertical frame of the present invention.

The present invention relates to a centrifugal casting apparatus (100) for casting a molten metal melt by centrifugal casting, and a centrifugal casting apparatus (100) for spouting a flame toward a centrifugal casting apparatus (100) A preheater 500 and a preheater in which a spraying device 200 for spraying cooling water is installed on both sides of the centrifugal casting device 100 in the longitudinal direction toward the centrifugal casting device 100.

In the present invention, in order to mold a molten copper melt material into a ferrite copper product, the centrifugal casting apparatus 100 is preheated by the preheater 500, and the molten metal melt is injected immediately after the preheating is stopped, The casting apparatus 100 is operated.

As soon as the operation of the centrifugal casting apparatus 100 is stopped, cooling water is sprayed onto the surface of the centrifugal casting apparatus 100 as a jetting apparatus 200 to be formed in the centrifugal casting apparatus 100 and the centrifugal casting apparatus 100 To prevent lead segregation from being formed in the lead-free copper product by quenching the lead-free copper product.

The centrifugal casting apparatus 100 includes a cylindrical body 110 having a space in which a molten metal melt is melted and a lower surface of the body 110 to support the body 110 And a driving motor 130 for driving the plurality of rollers 120. The plurality of rollers 120 are driven by the driving motor 130,

The structure of the centrifugal casting machine 100 will be described in more detail. A casting chamber 114 in which a molten metal melt is melted is provided at one end of a cylindrical body 110, And a door 113 is provided at the other end for discharging the molded copper wire product.

A plurality of circumferential grooves 112 formed in the circumferential direction of the main body 110 are spaced apart from each other by a predetermined distance. An upper surface of the plurality of rollers 120 is inserted into each of the circumferential grooves 112 And supports the main body 110.

The central portion of the plurality of rollers 120 is passed through one rotation shaft 140 so that a plurality of rollers 120 are rotated integrally with the rotation shaft 140. At one end of the rotation shaft 140, 130 are installed to rotate the rotary shaft 140.

The preheater 500 includes a gas pipe 530 disposed on one side of the longitudinal direction of the centrifugal casting apparatus 100 in parallel with the centrifugal casting apparatus 100; A plurality of openings 580 spaced apart from one another so that the gas inside the gas pipe 530 is burnt and sparks are blown toward the centrifugal casting apparatus 100; A vertical frame 510 supporting the gas pipe 530 at a predetermined height from the ground; A gas hose 540 connected to one end of the culvert 580 to supply gas into the gas pipe 530; And a gas valve for controlling the supply of gas from the gas hose 540 to the gas pipe 530.

The direction of the firebox 580 of the pre-heater 500 may be arbitrarily adjusted by a user.

In addition, a plurality of openings spaced along the longitudinal direction of the gas pipe are formed along the longitudinal direction of the gas pipe.

Therefore, even if the flames are blown out from the plurality of burners, the flames do not touch the gas pipes.

”형상이다.The covering plate 520 includes a vertical plate 521 formed in the longitudinal direction of the gas pipe and coupled with a plurality of openings formed in the gas pipe to be inserted therein and a vertical plate 521 extending upward from the upper end of the vertical plate 521, And a lower plate 523 which is moved downward from the lower end of the vertical plate 521 toward the front.

"It is a form.

A hinge shaft 524 is formed on the upper and lower front surfaces of the vertical plate, and the auxiliary closure plate 525 is hinged to the hinge shaft 524.

A magnet is attached to the end of each auxiliary closure plate.

When the flame is ejected from the fireplace, the auxiliary closure plate coupled to the upper portion of the vertical plate is magnetically coupled to the upper plate, and the auxiliary closure plate coupled to the lower portion of the vertical plate is magnetically coupled to the lower plate.

When the flame is not ejected from the crater, the ends of the auxiliary closure plate coupled to the upper and lower portions of the vertical plate are magnetically coupled with each other. Therefore, when the centrifugal casting device is quenched by the injection device, the splashing device can prevent the splashing water from entering the crusher.

The vertical frame 510 includes a lower frame 551 and an upper frame 552. The upper frame is smaller in diameter than the lower frame and the upper frame is inserted into the lower frame, Lt; / RTI >

A cylinder end of the actuator is coupled to the lower frame, and a rod end of the actuator is coupled to the upper frame.

Thus, the upper frame inserted into the upper part of the lower frame by the actuator is moved upward and downward.

The actuator 600 uses an electric linear actuator.

The actuator 600 includes a cylinder and a rod that reciprocates linearly in and out of the cylinder. An electric motor is provided in the cylinder, a spur gear is coupled to the motor shaft, and reduction gears are coupled to the spur gear A pinion gear is coupled to a final reduction gear, a rack is coupled to the pinion gear, and a rod is coupled to an end of the rack, so that the rotational force of the motor is converted into a linear reciprocating motion of the rod.

When the rod of the actuator linearly reciprocates, the upper frame coupled to the upper portion of the lower frame is moved upward and downward, and the vertical frame is adjusted in length up and down.

In another embodiment of the vertical frame of the preheater of the present invention, the preheater preheats the centrifugal casting apparatus for manufacturing the copper-bronze product in which the ferrous bronze material is melted and preheats the molded bronze copper product to the quenching apparatus, Prevent formation of lead segregation in the product.

When the preheater is used, when the auxiliary closure plates coupled to the vertical plate and the lower plate of the closure plate are rotated up and down with respect to the hinge axis, respectively, since the magnets are coupled to the ends of the auxiliary closure plate, Respectively.

At this time, the actuator coupled to the vertical frame of the preheater operates, so that the firebox is positioned on one side of the centrifugal casting apparatus.

When the preheater is not used, the auxiliary closure plates coupled to the vertical plate and the lower plate of the closure plate are rotated upward and downward with respect to the hinge axis, respectively, and the magnets are coupled to the ends of the auxiliary closure plate And are magnetically coupled to each other.

At this time, the actuator coupled to the vertical frame of the preheater operates and the firebox is positioned above the centrifugal casting apparatus.

Accordingly, when water is sprayed onto the shaped copper-based product by the spraying device, water is prevented from entering the crater of the pre-heater, thereby preventing the pre-heater from failing.

More specifically, the auxiliary clipping plates respectively coupled to the upper and lower front surfaces of the vertical plate are provided with detection sensors at the end thereof, and upper and lower plates extending upward and downward from the vertical plate, respectively, A detection sensor is provided. The sensing sensor uses a pressure switch such as a load cell.

In addition, the pre-heater is provided with a separate control unit. When the auxiliary cover plates coupled to the upper and lower front surfaces of the vertical plate are brought into contact with each other, the detection sensors provided on the respective auxiliary cover plates contact each other, The control unit determines that the front of the crane is closed and transmits a signal to the motor of the actuator to draw the rod of the actuator out of the cylinder.

Thus, the upper frame of the vertical frame is drawn out of the lower frame, so that the furnace of the preheater is positioned above the centrifugal casting apparatus.

When the auxiliary closure plates formed on the upper and lower surfaces of the vertical plate are brought into contact with the upper and lower plates formed on the upper and lower sides of the vertical plate, the detection sensors provided on the upper and lower plates and the auxiliary closure plate contact each other, The control unit determines that the front of the crane is opened and transmits a signal to the motor of the actuator so that the rod of the actuator is inserted into the cylinder.

Thus, the upper frame of the vertical frame is inserted into the lower frame, so that the furnace of the preheater is positioned at one side of the centrifugal casting apparatus.

In the meantime, as another embodiment of the preheater of the present invention, the preheater is moved up and down by a vertical frame, and the vertical frame includes a first body 511, a second body 512, A body 513, a fourth body 514, and a fifth body 515.

The fifth body is coupled to the bottom surface of the fifth body, and the upper surface thereof is formed with a screw rod having a diameter smaller than that of the fifth body.

The fourth body is a hollow body-shaped rotating body having a hole formed from an upper portion to a lower portion. A screw thread is formed on the inner periphery of the fourth body, and a screw rod formed on the upper surface of the fifth body is inserted into the hole of the fourth body, do.

A screw rod having a smaller diameter than the third body is protruded downward from the third body, a screw rod having a diameter smaller than that of the third body is protruded upward from an upper surface of the third body, The screw rod formed on the lower surface of the fourth body is inserted and screwed into the hole of the fourth body. A horizontal bar 513-1 protrudes from the side surface of the third body.

The second body is a hollow body-shaped rotating body having a hole from the upper portion to the lower portion. The threaded rod formed on the upper surface of the third body is inserted into the hole of the second body, do.

A screw rod having a diameter smaller than that of the first body is protruded downward from a lower surface of the first body, and a screw rod formed on a lower surface of the first body is inserted into a hole of the second body, .

At this time, the screw rod formed on the upper surface of the fifth body and the third body is left-hand thread, and the screw rod formed on the lower surface of the third body and the first body is a right screw.

When the second and fourth bodies are rotated, the screw rods screwed to both ends of the second body and the fourth body come close to each other, and when the rotations of the second body and the fourth body are reversed, the screw rods are moved away from each other.

And the second and fourth bodies are coupled by the binding portion 590 and rotated at the same time. The binding unit includes a binding body 591 having upper and lower spaces formed therein, and upper and lower folding units 592 and 593 inserted into upper and lower spaces of the binding unit body 591 and folded or folded in multi- 593 and upper and lower horizontal bars 594, 595 joined to the ends of the upper and lower folding parts 592, 593.

The upper horizontal bar coupled to the upper end of the upper fold is coupled to the side of the second body and the lower horizontal bar coupled to the lower end of the lower fold is coupled to the side of the fourth body.

When the user grips the horizontal bar formed on the third body and rotates the binding unit coupled with the second and fourth bodies, the screw rods connected to both ends of the second body and the fourth body come closer to each other, and the second body and the fourth body The screw rods are moved away from each other.

The spraying apparatus 200 includes a spraying pipe 230 disposed on both sides of the centrifugal casting apparatus 100 in the longitudinal direction in parallel to the centrifugal casting apparatus 100, A plurality of injection openings 280 spaced apart from each other by a predetermined distance so that the cooling water is injected toward the centrifugal casting apparatus 100 and a support frame 210 for supporting the injection pipe 230 at a predetermined height from the ground A hose 240 connected to one end of the injection port 280 for supplying cooling water to the inside of the spray pipe 230 and a valve 240 for controlling the supply of cooling water from the hose 240 to the spray pipe 230, (260).

The centrifugal casting apparatus 100 is rotated and centrifugal casting is carried out to form a coiled product and the rotation of the centrifugal casting apparatus 100 is stopped so that the centrifugal casting apparatus 100 is rotated through the jetting port 280 of the jetting apparatus 200 Cooling the coiled product formed by centrifugal casting inside the main body 110 together with the main body 110 together with the centrifugal casting apparatus 100 by spraying cooling water on the surface of the main body 110 of the main body 110 Thereby preventing segregation.

The direction of the injection port 280 of the injector 200 may be arbitrarily adjusted by the user.

A fixing member 220 for fixing the spray tube is mounted on the upper end of the support frame 210, and a fixing member for fixing the gas pipe is mounted on the upper end of the vertical frame.

The fixing member 220 includes a hollow body 221 which is installed in the same direction as the upper end injection pipe 230 of the support frame 210 and the fixing member for fixing the upper end gas pipe of the vertical frame, And a flange 223 is formed on the other side of the hollow body 221. The hollow portion of the hollow body 221 is provided with a spray pipe 230 and a flange 223, The gas pipe 530 is placed and then fastened to the through hole formed in the flange 223 as a fastening bolt 225 to fix the spray pipe 230 and the gas pipe 530.

Particularly, the upper hollow body 221 is formed with a through-hole vertically penetrating therethrough, and the fixing bolt 224 is inserted into the through-hole so that the injection pipe 230 and the gas pipe 530 can be fixed The injection pipe 230 and the gas pipe 530 are coupled by the flange 223 so that the injection port 280 formed in the injection pipe 230 and the direction of the pipe formed in the gas pipe can be rotated in a desired direction.

At this time, a handle 270 is mounted on one end of the injection pipe 230 to which the hose 240 is not fastened, so that the rotation of the injection pipe 230 is facilitated. Further, the hose 240 and the injection pipe 230 are jointed (250).

In addition, a handle is attached to one end of the gas pipe to which the gas hose is not fastened to facilitate the rotation of the gas pipe, and the gas hose and the gas pipe are fastened with a joint.

The joint 250 is fixed to the hose 240 and the spray pipe 230 is rotatable using a joint 250 for pipes.

On the other hand, the ferrous copper product manufactured by the centrifugal casting has a relatively stronger outer side strength than the inner side because the outer side tissue is denser than the inner side tissue due to the centrifugal force.

In order to compensate for this, forging work is to be performed on the inner surface of the ferrule manufactured by centrifugal casting.

A forged portion 300 having the same structure as that of the main body 110 of the centrifugal casting apparatus 100 is additionally installed in the centrifugal casting apparatus 100. [

That is, the main body 310 of the forging part 300 is fastened so that the forging chamber 314 of the forging part 300 is connected to the casting chamber 114 of the main body 110 of the centrifugal casting machine 100.

At this time, the casting chamber 114 of the centrifugal casting apparatus 100 and the forging chamber 314 of the forging unit 300 are separated from each other by the diaphragm 400.

The main body 110 of the centrifugal casting apparatus 100 and the main body 310 of the forged portion 300 are respectively fastened to the diaphragm 400 by the diaphragm 400 so as to rotate integrally.

A door 313 is provided at the end of the forged portion 300 to which the diaphragm 400 is not fastened after the forging operation of the ferrous metal product is completed. The door 313 is provided with a ball bearing An injection port 311 is formed.

A cylinder 150 is provided around the injection port 111 of the centrifugal casting apparatus 100 to push the ferrous copper product formed in the casting chamber 114 to the forging chamber 314.

Accordingly, when the first and second centrifugal casting apparatuses 100 form the coiled copper product, the diaphragm 400 is separated and the cylinder 150 is operated to move the ferrous copper product in the casting chamber 114 to the forging chamber 314. [ And then the diaphragm 400 is tightened again so that the ball bearing is injected through the injection port 311 of the forging part 300, the injected ball bearing is positioned in the hollow part of the coiled product.

When the main body 110 of the centrifugal casting apparatus 100 is rotated after the molten metal is injected into the casting chamber 114, the cast bronze casting product is manufactured by centrifugal casting in the casting chamber 114, ), The inner surface, which is a hollow portion of the copper casting product, is consolidated by the ball bearing.

The rotation speed of the forging unit 300 can be further increased by installing the rotation shaft 340 and the driving motor 330 passing through the roller 320 so as to drive the roller 320, So that it proceeds smoothly.

Therefore, according to the present invention, since the preheater is installed in the lead segregation prevention device, the centrifugal casting device for manufacturing the copper and bronze copper product which melts the copper-based copper material is sufficiently preheated before molding to prevent the lead from being segregated, It is possible to produce an excellent copper-free copper product.

100: Centrifugal casting device
110: main body 111: inlet 112: circumferential groove
113: door 114: casting chamber 120: roller
130: driving motor 140: rotating shaft 150: cylinder
200: Injection device
210: support frame 220: fixing member 221: hollow body
222: Hinge 223: Flange 224: Fixing bolt
225: fastening bolt 230: injection pipe 240: hose
250: joint 260: valve 270: handle
280: nozzle
300: forging part
310: main body 311: inlet 312: circumferential groove
313: door 314: forging chamber 320: roller
330: drive motor 340:
400: diaphragm
500: preheater
510: vertical frame 511: first body 512: second body
513: Third body 513-1: Horizontal bar
514: fourth body 515: fifth body
520: Screening plate 521: Vertical plate 522: Top plate
523: Lower plate 524: Hinge shaft 525: Secondary clipping plate
530: Gas pipe 540: Gas hose
551: lower frame 552: upper frame 580:
590: binding part 591: binding part body 592:
593: an undercut 594: an upper horizontal bar 595: a lower horizontal bar
600: Actuator

Claims (3)

A centrifugal casting apparatus 100 for forming a molten metal melt by centrifugal casting and a preheater 500 for spraying a flame toward a centrifugal casting apparatus 100 on one side in the longitudinal direction of the centrifugal casting apparatus 100 And a preheater 200 in which cooling water is injected toward both sides of the centrifugal casting apparatus 100 in the longitudinal direction of the centrifugal casting apparatus 100 toward the centrifugal casting apparatus 100, As a result,
The centrifugal casting apparatus 100 is preheated by the preheater 500 and the molten metal melt is injected immediately after the preheating is stopped to operate the centrifugal casting apparatus 100. When the centrifugal casting apparatus 100 is operated, The cooling water is sprayed onto the surface of the centrifugal casting apparatus 100 as the injector 200 to quench the coiled product formed in the centrifugal casting apparatus 100 and the centrifugal casting apparatus 100, It is possible to prevent the lead frame from being formed on the lead frame,
The centrifugal casting apparatus 100 includes a cylindrical body 110 having a space for injecting molten metal therein and a body 110 supported by the lower surface of the body 110 And a driving motor (130) for driving the plurality of rollers (120), wherein the plurality of rollers (120)
The preheater 500 includes a gas pipe 530 disposed on one side of the longitudinal direction of the centrifugal casting apparatus 100 in parallel with the centrifugal casting apparatus 100; A plurality of openings 580 spaced apart from one another so that the gas inside the gas pipe 530 is burnt and sparks are blown toward the centrifugal casting apparatus 100; A vertical frame 510 supporting the gas pipe 530 at a predetermined height from the ground; A gas hose 540 connected to one end of the culvert 580 to supply gas into the gas pipe 530; And a gas valve for controlling the supply of gas from the gas hose 540 to the gas pipe 530,
A plurality of openings 580 spaced along the longitudinal direction of the gas pipe 530 are formed along the longitudinal direction of the gas pipe 530 so that the open ends of the openings 580 The spark does not touch the gas pipe 530 even if it is sprayed,
The cover plate 520 is formed in the longitudinal direction of the gas pipe 530 and includes a vertical plate 521 to which a plurality of openings 580 formed in the gas pipe 530 are inserted and connected, An upper plate 522 which is upwardly moved forward and a lower plate 523 which is downwardly moved forward from a lower end of the vertical plate 521,
A hinge shaft 524 is formed on the upper and lower front surfaces of the vertical plate 521 and hinge shafts 525 are hinged to the hinge shafts 524, The auxiliary shielding plate 525 coupled to the upper portion of the vertical plate 521 is magnetically coupled to the upper plate 522 and the upper plate 522 is magnetically coupled to the upper plate 522, The auxiliary shielding plate 525 coupled to the lower portion is magnetically coupled to the lower plate 523,
When the flame is not spouted from the firebox 580, the ends of the auxiliary shielding plate 525 coupled to the upper and lower portions of the vertical plate 521 are magnetically coupled to each other. When the centrifugal casting apparatus is quenched by the injector, The water splashed in the crater 580 does not enter the crater 580,
The vertical frame 510 includes a lower frame 551 and an upper frame 552. The upper frame 552 is formed smaller in diameter than the lower frame 551, And the rod end of the actuator 600 is coupled to the upper frame 552. The upper end of the actuator 600 is connected to the lower end of the rod 551, The upper frame 552 inserted into the upper portion of the lower frame 551 by the actuator 600 is moved up and down,
The auxiliary shielding plate 525 coupled to the upper and lower surfaces of the vertical plate 521 is provided with a sensing sensor at an end thereof and an upper and a lower plate 552 extending upward and downward from the vertical plate 521, And 553 are respectively provided with detection sensors at the end portions and the preheater 500 is further provided with a control unit so that the auxiliary screen plates 525 coupled to the upper and lower front surfaces of the vertical plate 521 The control unit detects that the front of the fire wall 580 is closed, and the controller of the actuator 600 determines that the front of the fire wall 580 is closed, The rod of the actuator 600 is drawn out of the cylinder and the upper frame 552 of the vertical frame 510 is drawn out of the lower frame 551, Is located above the centrifugal casting apparatus 100, It is possible to prevent water from entering the firebox 580 of the preheater 500 and prevent the failure of the preheater 580 when water is sprayed onto the copper bronze product formed by the jet injector 200 Wherein the pre-segregation prevention device is provided with a pre-heater.
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