KR101210920B1

KR101210920B1 - Riser heating apparatus

Info

Publication number: KR101210920B1
Application number: KR1020100100679A
Authority: KR
Inventors: 임채묵; 고영호; 김성욱; 오관홍
Original assignee: 대우조선해양 주식회사
Priority date: 2010-10-15
Filing date: 2010-10-15
Publication date: 2012-12-11
Also published as: KR20120039148A

Abstract

The present invention relates to a hot water heating device capable of heating the hot water very easily and heating the hot water uniformly and efficiently.
According to the present invention, an apparatus for heating a hot water for heating a hot water located on an upper side of a mold, comprising: a frame located on an upper of the hot water of the mold; A plurality of heating units installed at the frame side, the plurality of heating units being movable in the vertical direction and the horizontal direction into the mold bath; A vertical transfer unit for transferring the plurality of heating units in a vertical direction; A horizontal conveying unit for conveying the plurality of heating units in a horizontal direction; And a control unit installed at the frame side to control the heating operation of the heating unit. Provided is a hot water heating device comprising a.

Description

Pressure Bath Heater {RISER HEATING APPARATUS}

The present invention relates to a pressurization of a mold for casting a hollow cast product, and more particularly, to a pressurizing heating apparatus capable of heating the pressurization very easily and heating the pressurization temperature uniformly and efficiently.

As is widely known, casting refers to a molten metal, ie, a molten metal that is placed in a mold and solidified to form a metal product of a desired shape or a product thereof. The material of the mold is made of sand, metal, and the like, and molten metal is injected into the mold by gravity, pressure, centrifugal force, or the like.

When the molten metal is injected into the mold, shrinkage occurs while cooling and solidifying, and a mold is installed in the mold. Such a hot water can compensate for insufficient melt due to shrinkage to prevent the occurrence of pores or bubbles, and also prevent local deformation due to shrinkage, pressurize the molten metal in the mold to densify the structure of the casting product, and It serves to discharge the gas contained.

When casting a casting having a hollow part, such as a propeller, the molten metal in the mold starts to solidify in the hot water part exposed to the atmosphere, and in this case, casting defects such as shrinkage holes may occur in the product in which shrinkage occurs. The temperature of the hot water is controlled to maintain the hot water in the molten state until the inside of the cast is solidified. The solidification is sequentially performed from the bottom of the cast to the top. This is called directional solidification, and when directional solidification is performed, bubbles or other gases inside the casting are effectively discharged to the outside to prevent casting defects due to condensation shrinkage, thereby producing a more compact cast.

On the other hand, the method for managing the temperature of the hot water according to the prior art, there was a method for increasing the temperature of the hot water by increasing the temperature of the hot water through the additional hot water or by adding a heating material.

However, the additional pressure method had to inject the previously sprayed thermal insulation material in order to block the heat dissipation of the upper part of the molten metal. Therefore, there was a difficulty in removing the thermal insulation material remaining in the molten metal. The method is heavily polluted due to the dust and smoke generated by the input of the heating material, there is a problem that there is always a risk according to the worker working around the high temperature molten metal.

Therefore, recently, a hot water heating device for directly heating a hot water by a heating unit is disclosed in Korean Unexamined Patent Publication Nos. 10-2006-014533 and 10-2006-0016189.

However, the conventional hot water heating device has a disadvantage in that it is difficult to evenly heat the hot water of the hollow structure using a single device, and the equipment transfer to the heating place is cumbersome. As a result, the heating operation is very complicated, and there is a problem in that the hot water cannot be uniformly and efficiently heated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above point, and an object of the present invention is to provide a hot water heating apparatus capable of heating the hot water uniformly and efficiently, as well as the heating operation of the hot water.

According to the present invention for achieving the above object, a hot water heating device for heating the hot water located on the upper side of the mold, the frame located on the hot water of the mold; A plurality of heating units installed at the frame side, the plurality of heating units being movable in the vertical direction and the horizontal direction into the mold bath; A vertical transfer unit for transferring the plurality of heating units in a vertical direction; A horizontal conveying unit for conveying the plurality of heating units in a horizontal direction; And a control unit installed at the frame side to control the heating operation of the heating unit. The vertical conveying unit and the horizontal conveying unit are located in the frame, so that the plurality of heating units, the vertical conveying unit and the horizontal conveying unit are all operated in the upper part of the hot water supply. do.

Preferably, the plurality of heating units include an electrode rod connected to a power source, and the electrode rod generates heat as power is applied.

The vertical conveying unit, the feed screw is installed in the vertical direction in the frame, rotated by a drive motor installed on the upper side; And a transfer nut which is screwably engaged with the transfer screw to move in the vertical direction by rotation of the transfer screw, wherein the heating unit moves as the transfer nut moves in the vertical direction by rotation of the transfer screw. It is preferable to move in the vertical direction in the molten metal.

The horizontal transfer unit, the flange provided on the outer peripheral surface of the transfer nut; A plurality of horizontal guide members installed horizontally on the flange side; And a plurality of holder members which are installed to be guided in a horizontal direction along the horizontal guide member, wherein the heating unit is coupled to the holder member side, and a guide portion is provided on a side surface of the holder member. As the electrode is guided along the horizontal guide member, the electrode may move in the horizontal direction in the molten metal.

Here, the plurality of horizontal guide members are preferably disposed at an equiangular center with respect to the flange.

The frame is composed of a stationary structure having a plurality of support legs in the lower portion, the frame is mounted so that the bottom surface is spaced apart at regular intervals from the upper portion of the mold of the mold by the support legs, the bottom surface of the frame A plurality of slots are formed radially, it is preferable that the electrode rod of the heating unit is guided and regulated by the slots.

It is preferable that a heat sink is installed on the bottom surface of the frame adjacent to the hot water.

The upper portion of the frame is preferably provided with a lug detachably connected to the crane wire.

It is preferable that the temperature measuring unit for measuring the temperature in the molten metal in real time, the temperature measuring unit can be connected to the control unit to efficiently manage the temperature of the molten metal.

According to still another aspect of the present invention, a pressure heating device for heating a hot water located on the upper side of the mold for casting the hollow casting, comprising: a plurality of heating units for applying a heat source to the hot water; Vertical transfer unit for moving the plurality of heating units in the vertical direction along the axial direction of the pressure bath; A horizontal transfer unit for moving the plurality of heating units in a radial direction orthogonal to the axial direction of the pressure bath; And a frame accommodating the vertical transfer unit and the horizontal transfer unit and supporting movement of the plurality of heating units; Provided is a hot water heating device comprising a.

The heating unit is preferably composed of an electrode rod adopting any one of the arc heating method and the electro slag heating method.

According to the present invention as described above, as the heating unit is easily transferred in the vertical direction (up and down direction) and the horizontal direction (radius direction) in the hot water, the directional solidification to the molten metal of the mold by performing the heating of the hot water uniformly and efficiently By doing this effectively there is an advantage that can produce a more compact cast.

In addition, according to the present invention, since the heating unit, the vertical conveying unit, the horizontal conveying unit, and the control unit are integrally formed on the frame side, the present invention can move and transport the mold to the molten side at once, and after the heating of the molten metal is completed, You can easily move it to another place.

1 is a perspective view showing a hot water heating device according to an embodiment of the present invention.
Figure 2 is a perspective view showing a state in which the hot water heating apparatus of the present invention is mounted on the hot water of the mold.
Figure 3 is a front view showing a state in which the hot water heating apparatus of the present invention is mounted on the hot water of the mold.
FIG. 4 is a plan view taken along line AA of FIG. 3.
FIG. 5 is an enlarged view of the arrow B of FIG. 4.

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

1 to 5 are diagrams illustrating a hot water heating device according to an embodiment of the present invention.

As shown, the hot water heating device according to the present invention is to transfer the frame 10, a plurality of heating units 20 connected to the frame 10, the heating unit 20 located in the upper portion of the casting of the mold in the vertical direction It includes a vertical transfer unit 30, a horizontal transfer unit 40 for transferring the heating unit 20 in the horizontal direction.

The mold 50 to which the present invention is applied is composed of an upper mold 51 and a lower mold 52 as illustrated in FIG. 3, and an upper side of the mold 50 is provided with a hot water 55 for refilling the molten metal. In addition, the mold 50 is illustrated as a structure for casting a hollow cast product 57, such as a propeller as shown in FIG.

The frame 10 is composed of a stationary structure having a plurality of support legs 11 at the bottom thereof, and the frame 10 is pressurized of the mold 50 by a plurality of support legs 11 at its bottom surface 12. 55 is mounted on the upper portion of the mold 50 so as to be spaced at a predetermined interval. In particular, the heat sink 14 is installed on the bottom surface 12 of the frame 10 adjacent to the hot water 55 so that the bottom surface 12 of the frame 10 may be protected from heat of the hot water.

The frame 10 is provided with a lug 19 on its upper surface, and a crane wire (not shown) is detachably connected to the lug 19 side so that the frame 10 can be easily moved and transported through the crane. have.

In addition, a plurality of slots 13 are radially formed on the bottom surface 12 of the frame 10, and the horizontal transfer of the heating unit 20 can be guided and regulated by the slots 13.

The heating unit 20 is installed to be movable in the vertical direction (up and down direction) and the horizontal direction (radial direction) in the pressurization 55 of the mold 50. According to an embodiment, the heating unit 20 includes an electrode rod 21 employing an arc heating method or an electro slag heating method, and a power source is connected to the electrode rod 21, and a power source is applied to the electrode rod 21. Accordingly configured to generate heat.

The vertical transfer unit 30 is installed at the center of the frame 10 and is configured to transfer the heating unit 20 in the vertical direction (up and down direction) in the hot water 55. More specifically, the heating unit 20 can be moved in the vertical direction along the axial direction of the pressure bath 55.

The vertical transfer unit 30 includes a transfer screw 31 installed in the vertical direction on the frame 10 side and a transfer nut 32 which is screwably engaged with the transfer screw 31.

The transfer screw 31 has a male screw portion formed on an outer circumferential surface thereof, and a lower end thereof is rotatably supported on the bottom surface 12 of the frame 10, and a driving motor 35 is installed on the upper end of the transfer screw 31. . The feed screw 31 is configured to rotate by the drive motor (35).

The feed nut 32 has a female thread portion formed on its inner circumferential surface, and the female thread portion is screwably engaged with the male thread portion of the transfer screw 31. As the feed screw 31 rotates, the feed nut 32 moves in the vertical direction. The heating unit 20 is connected to the transfer nut 32 through the horizontal transfer unit 40.

In the vertical transfer unit 30, a plurality of support guides 33 are installed around the transfer screw 31, and the support guide 33 stabilizes vertical movement of the transfer screw 31 and the transfer nut 32. It can be supported by.

The horizontal conveying unit 40 is installed on the conveying nut 32 side of the vertical conveying unit 30, and is configured to convey the heating unit 20 in the horizontal direction (radial direction) in the hot water 55. More specifically, the heating unit 20 can be moved in a radial direction orthogonal to the axial direction of the pressure bath 55.

As shown in FIG. 4, the horizontal transfer unit 40 includes a flange 41 fixed to an outer circumferential surface of the transfer nut 32, a plurality of horizontal guide members 42 installed in a horizontal direction on the flange 41 side, and the horizontal It includes a plurality of holder member 43 guided along the guide member 42.

The flange 41 is fixed to the outer circumferential surface of the transfer nut 32 and installed to protrude in the outer diameter direction.

The plurality of horizontal guide members 42 are installed in the horizontal direction on the flange 41 side, and in particular, the plurality of horizontal guide members 42 are installed in a radial structure arranged at a right angle about the flange 41.

Each holder member 43 is installed to be guided in the horizontal direction along each horizontal guide member 42, in particular the holder member 43 is horizontal by a transfer mechanism 45, such as a cylinder mechanism, as shown in FIG. It may be configured to move along the guide member 42. In addition, the transfer mechanism 45 may move the holder member 43 by various transfer structures such as a gear transmission mechanism, a belt transmission mechanism, a link transmission mechanism, and the like.

The electrode rod 21 of the heating unit 20 is coupled to the holder member 43 side, and a guide portion 44 is provided at one side of the holder member 43, and the guide portion 44 of the holder member 43 is provided. The heating unit 20 moves in the horizontal direction as guided through the horizontal guide member 42. In particular, the holder member 43 may be guided and regulated along the slot 13 provided in the bottom surface 12 of the frame 10.

In particular, the plurality of horizontal guide member 42 is composed of a radial structure arranged horizontally and equilateral with respect to the flange 41, the heating unit 20 can be transferred radially in the hot water 55, In this way, a uniform and efficient heating operation of the hot water 55 by the heating unit 20 can be implemented.

On the other hand, in the present invention, the vertical transfer unit 30 is installed in the center of the frame 10, the horizontal transfer unit 40 is connected to the lower portion of the vertical transfer unit 30, the holder in the horizontal transfer unit 40 The electrode rod 21 of the heating unit 20 is coupled through the member 43. And, the control unit 60 is disposed on both left and right sides of the frame 10, the control unit 60 is provided with a power supply unit (not shown) for applying power to the electrode rod 21 of the heating unit 20 , The control unit 60 controls the heating operation of the heating unit 20.

Thus, according to the present invention, the vertical conveying unit 30, the horizontal conveying unit 40, the control unit 60, and the heating unit 20 are integrally formed on the frame 10, and thus the pressure of the mold 50 is 55. It can be moved and transported to the) side at once, and can be easily moved to another place through the crane after the heating of the hot water 55 is completed.

In the present invention, a temperature measuring unit (not shown) for measuring the temperature in the pressure bath 55 in real time is further provided, and the temperature measuring unit is connected to the control unit 60 side. In this way, it is possible to more efficiently manage the temperature of the hot water 55 to perform the directional solidification of the molten metal of the mold 50 more efficiently.

In addition, according to the present invention, since the vertical transfer unit 30 and the horizontal transfer unit 40 is located in the frame 10, the heating unit 20, the vertical transfer unit 30 and the horizontal transfer unit 40 are all in the top of the hot water Can work in

10: frame 11: support leg
12: bottom 13: slot
14: heat sink 20: heating unit
21: electrode 30: vertical transfer unit
31: Feed screw 32: Feed nut
40: horizontal feed unit 41: flange
42: horizontal guide member 43: holder member
45: cylinder mechanism 50: mold
51: upper mold 52: lower mold
55: pressure 60: control unit

Claims

A hot water heating device for heating a hot water located on the upper side of a mold, comprising: a frame located on the hot water of the mold; A plurality of heating units installed at the frame side, the plurality of heating units being movable in the vertical direction and the horizontal direction into the mold bath; A vertical transfer unit for transferring the plurality of heating units in a vertical direction; A horizontal conveying unit for conveying the plurality of heating units in a horizontal direction; And a control unit installed at the side of the frame to control the heating operation of the heating unit, wherein the vertical transfer unit and the horizontal transfer unit are located in the frame, so that the plurality of heating units, the vertical transfer unit, and the The horizontal transfer unit is all operated at the top of the pressure bath,
The frame is composed of a stationary structure having a plurality of support legs in the lower portion, the frame is mounted so that the bottom surface is spaced apart at regular intervals from the upper portion of the mold of the mold by the support legs, A plurality of slots are formed radially, the hot water heating apparatus characterized in that the electrode of the heating unit is guided and regulated by the slot.

The method according to claim 1,
The plurality of heating units include an electrode rod connected to the power source, the electrode rod is a hot water heating device, characterized in that to generate heat as power is applied.

The method according to claim 1,
The vertical transfer unit,
A feed screw installed in the frame in a vertical direction and rotated by a drive motor disposed above the frame; And
And a feed nut which is screwably engaged with the feed screw and moves vertically by rotation of the feed screw.
The heating unit is a hot water heating device, characterized in that for moving in the vertical direction in the molten metal as the transfer nut is moved in the vertical direction by the rotation of the transfer screw.

The method according to claim 1,
The horizontal transfer unit,
A flange provided on an outer circumferential surface of the transfer nut;
A plurality of horizontal guide members installed horizontally on the flange side; And
And a plurality of holder members installed in a horizontal direction along the horizontal guide member.
The heating unit is coupled to the holder member side, the guide portion is provided on the side of the holder member, the electrode rod is moved in the horizontal direction in the molten metal as the guide portion is guided along the horizontal guide member Heating device.

The method of claim 4,
The plurality of horizontal guide member is a hot water heating device, characterized in that arranged at a right angle to the flange.

delete

The method according to claim 1,
A hot water heater, characterized in that the heat sink is installed on the bottom surface of the frame adjacent to the hot water.

The method according to claim 1,
The upper portion of the frame is a hot water heating device, characterized in that the lug is detachably connected to the crane wire.

The method according to claim 1,
And a temperature measuring unit for measuring the temperature in the molten metal in real time, wherein the temperature measuring unit is connected to the control unit to efficiently manage the temperature of the molten metal.

An apparatus for heating a hot water located on an upper side of a mold for casting a hollow casting, comprising: a plurality of heating units for applying a heat source to the hot water; Vertical transfer unit for moving the plurality of heating units in the vertical direction along the axial direction of the pressure bath; A horizontal transfer unit for moving the plurality of heating units in a radial direction orthogonal to the axial direction of the pressure bath; And a frame accommodating the vertical transfer unit and the horizontal transfer unit and supporting movement of the plurality of heating units.
The frame is composed of a stationary structure having a plurality of support legs in the lower portion, the frame is mounted so that the bottom surface is spaced apart at regular intervals from the upper portion of the mold of the mold by the support legs, A plurality of slots are formed radially, the hot water heating apparatus characterized in that the electrode of the heating unit is guided and regulated by the slot.

The method of claim 10,
The heating unit is a hot-pressure heating device, characterized in that consisting of an electrode rod adopting any one of the arc heating method and the electro-slag heating method.