KR100722859B1 - Vacuum furnace - Google Patents

Abstract

The present invention relates to a vacuum furnace, the flange portion is formed on both sides of the body for dissolving and heat-treating the metal in the vacuum state, the front cover is formed on the front side of the flange portion, and the rear cover is formed on the rear side of the flange portion, A body part including a pressurized vacuum part for pressurizing a vacuum pressure to one side of the body and a heat insulation member having a heating element inside the body part of the body part, and a heating furnace for dissolving and heat-treating by heating with a heating element And a front furnace opening that forms a front opening in front of the heating furnace, and a rear opening opening in the rear of the heating furnace, and a front blocking opening that acts as a front blocking cylinder to block the front opening of the heating furnace. And a blocking portion for forming a rear shielding opening that acts as a rear blocking cylinder so as to block the rear opening of the heating furnace section; A cooling unit configured to supply cooling water supplied from a cooling supply unit configured to supply water to a cooling frame connected to a plurality of cooling tubes to form a cooling space, and a plurality of guide vanes provided inside the cooling space of the cooling unit; It is characterized in that it comprises a blower to form a blower, and a blower motor for operating the blower blower.

Vacuum furnace, heating furnace part, blocking part, cooling part, blowing part, blowing blower

Description

Vacuum furnace

1 is a perspective view showing a vacuum furnace according to the present invention.

Figure 2 is a rear perspective view showing a vacuum furnace according to the present invention.

3 is a cross-sectional view showing a vacuum furnace according to the present invention.

4 is a block diagram showing a heating state of a vacuum furnace according to the present invention.

5 is a configuration diagram showing a cooling state of a vacuum furnace according to the present invention.

Figure 6 is a partially cutaway perspective view showing the main part of the vacuum furnace according to the present invention.

* Explanation of symbols for main parts of drawings *

100: vacuum furnace 110: body

111 body 112 flange portion

113: front cover 114: hinge portion

115: fastener 116: rear cover

117: air distribution hole 118: pressurized vacuum

120: heating furnace section 121: heating furnace

122: heat insulating member 123: heating element

124: front opening 125: rear opening

130: blocking unit 131: front block

132: front blocking cylinder 133: front blocking rod

134: rear blocking cylinder 135: rear blocking cylinder

136: rear blocking rod 140: cooling unit

141: cooling tower 142: cooling exchange unit

143: cooling supply unit 144: cooling frame

145: cooling tube 146: wrinkles

147: cooling space 150: blower

151: blower motor 152: blower blower

153: guide vane

The present invention relates to a vacuum furnace.

In general, a vacuum furnace is also referred to as a vacuum melting furnace, and refers to a furnace for dissolving a metal by making the interior into a vacuum state, and the method of vacuum dissolving a metal has no contamination from surroundings, It has such characteristics as lowering the gas content in the metal. This furnace is classified into resistance type, induction type, arc type and the like according to heating method.

The above-described resistive melting furnace uses a resistor such as metal or ceramics as a heating element, and dissolves the metal by using radiant heat from the surface of the heating element. Induction melting furnace uses Joule heat by electron induction. Heat dissolving the metal by virtue of the heat dissipation, and the arc melting furnace makes contact with the lower end of the consuming electrode and the bottom of the water-cooling crucible to dissolve the electrode by the arc heat generated here.

As described above, the vacuum furnace is not only used to dissolve the metal, but also heat treatment using the vacuum furnace during the heat treatment method of displacing the characteristics of the metal according to the crystal change in the metal while heating to a suitable temperature to cool the metal As the heat treatment is carried out by pressurizing in a vacuum state, the brightness is excellent, the thermal efficiency is good, and the cooling rate is fast, thereby shortening the heat treatment time to improve productivity.

As described above, the heat-treated metal treated with the heat treatment method using the vacuum furnace has a small amount of deformation, is uniform in hardness and high in pressure cooling, has improved wear resistance, has no decarburization and surface oxidation, and has a uniform temperature so that heat treatment of a special metal is possible. As a result, it is applied to various tool steels, heat resistant steels and special metals or metals which are difficult to heat treatment such as magnetic treatment.

As described above, the vacuum furnace which is mainly supplied to the melting furnace or heat treatment is heated by the electrical resistance of the heating element to form a vacuum pressure means for pressurizing the inside with a vacuum to the outside provided as a heat insulating means, and is insulated with heat insulating means The heating element is provided inside the vacuum furnace to make the inside of the vacuum furnace, which is provided as a heat insulating means by the vacuum pressurizing means, in a vacuum pressurized state. The product is cooled by cooling means.

Such a vacuum furnace of the prior art is heated in a state in which the metal to be melted and heat-treated into the inside of the vacuum furnace is pressurized with a vacuum, and when heated for a predetermined time, the vacuum furnace is charged by cooling through a cooling means. By opening the front side and the rear side cooled by the cooling means so that the vacuum pressure is applied to the inside of the vacuum furnace in which the metal is loaded, the heat efficiency of the heating element is also acted on the outside of the vacuum furnace, and the thermal efficiency is reduced to the cooling side. There was a problem that the heat is supplied to reduce the cooling efficiency.

In addition, the vacuum furnace of the prior art as a whole of the melted and heat-treated metal when cooled by the cooling means in the state of completing the dissolution and heat treatment of the metal heated in the heat insulating means provided with the heating element of the vacuum furnace for dissolution and heat treatment. There is a problem in that the cooling efficiency is lowered due to the failure to cool and the quality of the metal is degraded due to uneven cooling.

In addition, the vacuum furnace of the prior art is dissolved in the heat treatment and the heat treatment is maintained in a vacuum pressurized state as the flow of the fluid pressurized inside is not smooth, so that the cooling fluid during the cooling by the cooling means prevents the flow of the fluid There was a problem that the cooling efficiency is reduced.

The main object of the present invention devised to solve the above problems is to form a blocking portion for blocking the opening when heated to both sides of the heating furnace having a heat insulating member that is heated by a heating element inside the vacuum furnace body to improve the thermal efficiency, Blowing blower is formed inside the cooling space to circulate the inside of the cooling to convection the cooling fluid by the rotation of the blowing blower to improve the internal cooling efficiency.

As such, the vacuum furnace of the present invention devised to achieve the object forms a flange portion on both sides of the body for dissolving and heat-treating the metal in a vacuum state, and forms a front cover to the front side of the flange portion, and to the rear side of the flange portion. And a rear cover, a body portion having a pressurized vacuum portion for pressurizing a vacuum pressure to one side of the body, and a heat insulation member having a heating element inside the body portion of the body portion, and heated with a heating element to dissolve and A heating furnace portion which forms a heating furnace for heat treatment, forms a front opening opening in front of the heating furnace, and forms a rear opening opening in the rear of the heating furnace, and a front blocking cylinder to block the front opening opening of the heating furnace section. A blocking portion for forming a front blocking opening to operate, and for forming a rear blocking opening for acting as a rear blocking cylinder to block the rear opening of the heating furnace; A cooling unit configured to supply the cooling water supplied from the cooling supply unit configured to supply the cooling water to the body side of the body part to a cooling frame connected to a plurality of cooling tubes to form a cooling space, and a plurality of guides inside the cooling space of the cooling unit. It is characterized in that it comprises a blower formed with a blow blower provided with a vane, and a blower motor for operating the blower blower.

In addition, the body portion is coupled to the front cover by the hinge portion is fixed to the fastener to form a fixed fastener in the state in which the metal is inserted into the inside while rotating to the hinge portion, forming an air distribution hole in the rear cover to cool the internal air during cooling It is characterized in that it is configured to cool while flowing.

And, the blocking portion is formed to block and open the front blocking opening to the front opening of the heating furnace coupled to the front blocking rod of the front blocking cylinder provided on one side of the front cover of the body portion, It characterized in that it is configured to block and open the rear block opening coupled to the rear block opening of the rear blocking cylinder to the rear opening of the heating furnace.

In addition, the cooling unit forms a cooling tower to the upper side of the body, and forms a cooling exchange part for exchanging the cooling water of the cooling tower to the side of the body, and forms a cooling supply unit for supplying the cooling water exchanged to the lower portion of the cooling exchange part It is connected to the cooling pipe by exchanging the cooling water by forming a cooling frame supplied to the cooling pipe is connected to a plurality of cooling tubes provided with a pleat in the cooling frame formed to have a cooling space toward the rear cover side of the body portion to the cooling pipe Characterized in that configured to be supplied to the cooling frame.

Thus, looking at the preferred embodiment of the vacuum furnace of the present invention configured with reference to the drawings as follows.

First, in the drawings, the same components or parts are to be noted that the same reference numerals as possible. In describing the present invention, detailed descriptions of related well-known functions or configurations are omitted in order not to obscure the subject matter of the present invention.

1 is a perspective view showing a vacuum furnace according to the present invention, Figure 2 is a rear perspective view showing a vacuum furnace according to the present invention, Figure 3 is a cross-sectional view showing a vacuum furnace according to the present invention, Figure 4 is according to the present invention 5 is a configuration diagram showing a heating state of the vacuum furnace, FIG. 5 is a configuration diagram showing a cooling state of the vacuum furnace according to the present invention, and FIG. 6 is a partially cutaway perspective view showing a main part of the vacuum furnace according to the present invention.

As shown in Figures 1 to 6, the vacuum furnace 100 of the present invention forms a front cover 113 to the front of the body 111 for dissolving or heat-treating metal, the rear cover 116 to the rear A body part 110 formed therein, and a heating part 120 having a heating furnace 121 formed at both sides to be heated by charging metal in a vacuum state to the center of the body 111 of the body part 110; Cooling pipes are provided in the cooling part 143 by the blocking part 130 formed to block the open heating furnace 121 of the heating part 120 and the body 111 side of the body part 110. Cooling unit 140 having a cooling space 147 formed in the center of the cooling frame 144 connected to supply to (145), and blower blower 152 is formed in the cooling space 147 of the cooling unit 140 It comprises a blower 150 for blowing by the rotation of the blower motor 151.

The body portion 110 forms the flange portion 112 on both sides of the body 111 for dissolving and heat-treating the metal in a vacuum state, the front cover 113 to the front side of the flange portion 112, the plan The rear cover 116 is formed on the rear side of the branch 112 and is configured to form a pressurized vacuum part 118 that pressurizes the vacuum pressure to one side of the body 111.

Here, the body portion 110 is coupled to the front cover 113 by the hinge portion 114 is fixed to the fixture (115) to rotate the hinge portion 114 while fixing the metal inside the fixture 115 It is preferable to form so as to be fixed to, and to form the air distribution hole 117 in the rear cover 116 to cool while circulating the internal air during cooling.

The heating part 120 is formed of a heat insulating member 122 having a heating element 123 therein to the center of the body 111 of the body portion 110 is heated by the heating element 123 to melt and heat treatment It forms so that 121, the front opening opening 124 is formed in front of the heating furnace 121, and the rear opening opening 125 is formed in the rear of the heating furnace 121.

The blocking unit 130 forms a front blocking opening 131 that operates as the front blocking cylinder 132 to block the front opening opening 124 of the heating unit 120, the rear of the heating unit 120 It is configured to form a rear block opening 134 acting as a rear block cylinder 135 to block the opening (125).

Here, the blocking unit 130 is a heating furnace for the front block opening 131 coupled to operate as the front blocking rod 133 of the front blocking cylinder 132 provided to one side of the front cover 113 of the body portion 110. It is formed to be blocked and opened in the front opening 124 of the 121, the rear coupled to be operated by the rear blocking rod 136 of the rear blocking cylinder 135 provided on the body 111 side of the body portion 110. It is preferable to configure the block 134 to be blocked and open to the rear opening 125 of the heating furnace 121.

The cooling unit 140 is a plurality of cooling tubes 145 to form a cooling space 147, the cooling water supplied from the cooling supply unit 143 formed to supply the cooling water to the body 111 side of the body portion 110. It is configured to supply to the connection formed cooling frame (144).

Here, the cooling unit 140 forms a cooling tower 141 on the upper side of the body 111, and connects the cooling exchange unit 142 to exchange the cooling water of the cooling tower 141 on the side of the body 111. And a cooling supply unit 143 for supplying the cooling water exchanged to the lower portion of the cooling exchange unit 142, and formed to have a cooling space 147 toward the rear cover 116 of the body unit 110. The cooling frame 144 is connected to the plurality of cooling pipes 145 having the pleats 146 and is formed to supply the cooling water supplied from the cooling supply unit 143 to the cooling pipe 145 to exchange the cooling water. It is preferable to configure to supply to the cooling frame 144 connected to (145).

The blower 150 forms a blower blower 152 having a plurality of guide vanes 153 inside the cooling space 147 of the cooling unit 140, and blower motor for operating the blower blower 152 ( 151 to form.

Thus, look at the action in the vacuum furnace of the present invention configured as follows.

First, the front cover 113 provided on the front side of the flange portion 112 formed on both sides of the body 111 of the body portion 110 to heat or melt the metal rotates around the hinge portion 114 to open. In the state is charged to the metal to perform the melting and heat treatment to the front opening 124 side of the heating furnace 121 provided with the heat insulating member 122.

Thus, in the state in which the metal is charged in the heating furnace 121, the front cover 113 is closed by the hinge portion 114 and fixed by the fastener 115 to press the side portion of the body 111 in a closed state. Operate the study 118 to press the inside of the body portion 110 with a vacuum pressure.

As described above, when the inside of the body portion 110 of the vacuum furnace 100 is pressed by the vacuum pressure, the front blocking cylinder 132 formed on one side of the front cover 113 is operated to prevent the front blocking rod 133 from being coupled to the front blocking rod 133. The sphere 131 closes the front opening port 124 formed to the front side of the heating furnace 121, and is coupled to the rear blocking rod 136 by operating the rear blocking cylinder 135 provided at the side of the body 111. The rear shut-off opening 134 closes the rear opening 125 formed at the rear side of the heating furnace 121 to apply electric power to the heating element in a state in which the open portions on both sides of the heating furnace 121 are completely closed. Heated for dissolution and heat treatment.

In this way, by heating the heating element 121 in the state in which the heating furnace 121 is completely closed, only the volume of the heating furnace 121 is heated, thereby increasing the thermal efficiency and rapidly heating the metal inside the heating furnace, whereby the characteristics of the metal are improved. To improve.

As described above, when the melting furnace and the heat treatment are finished in the closed state of the heating furnace 121, the front blocking cylinder 132 is operated to open the front blocking opening 131 coupled to the front blocking rod 133, and the rear blocking cylinder. Cooling supply unit 143 is supplied to the cooling water is supplied to the cooling exchange unit 142 is exchanged in the cooling tower 141 in the state of opening the front block opening 131 coupled to the rear blocking rod 136 by operating (135) Cooling water supplied from the cooling frame 147 is provided with a cooling frame 144 is provided to be coupled to a plurality of cooling pipes 145 provided with a pleat portion 146 to increase the exchange volume of cold air to supply the cooling water. .

As such, when the coolant is supplied, a blower blower having guide vanes 153 in the cooling space 147 is formed in the cooling space 147 while circulating inside the cooling pipe 145 connected to the cooling frame 144. 152 is supplied to the heating furnace 121 in which metal is charged through the interior of the body 111 through the inside of the body 111 by the blowing motor 151 by the blowing pressure by the blowing pressure.

At this time, the heating furnace opened through the outside of the body 111 as cold air is supplied to the rear side with the blowing pressure in a state in which the front opening opening 124 and the rear opening opening 125 are open to both sides of the heating furnace 121. (121) By supplying the coolant while convection to the inner side, to increase the cooling efficiency.

As described above, by supplying a cooling fluid of the cooling unit 140 by the operation of the blower 150 to cool the metal of the heating furnace 121 and the cooled and heated fluid is the air flow hole 117 of the rear cover 116 It is cooled while finishing the melting and heat treatment.

Therefore, as the heating element 123 is operated in a state in which the heating unit 121 is closed by the blocking unit 130, melting and heat treatment are performed, thereby rapidly heating while increasing the thermal efficiency, and supplied to the cooling unit 140. Cooling by supplying the cooling fluid cooled by the cooling water to the convection inside the body at the blowing pressure of the blower 150, thereby improving the cooling efficiency.

In this way, the vacuum furnace of the present invention configured to form a blocking portion for blocking the opening at the time of heating to both sides of the heating furnace provided with a heat insulating member is heated inside the body to improve the thermal efficiency, circulating the inside during cooling The blower blower is formed inside the cooling space to convection the cooling fluid by the rotation of the blower blower to improve the cooling efficiency of the inside.

In addition, the vacuum furnace of the present invention forms a flange portion on both sides of the body for dissolving and heat-treating the metal in a vacuum state, coupled to the front side of the flange portion by a hinge portion to form a front cover fixed by a fixture, the rear of the flange portion It forms a rear cover having an air distribution hole to the side, and forms a body portion formed with a pressurized vacuum portion for pressurizing the vacuum pressure to one side of the body, and is formed as a heat insulating member having a heating element inside the body of the body portion A heating furnace for heating and dissolving and heat-treating by a heating element is formed, and a front opening is formed at the front of the heating furnace, and a heating furnace is formed at the rear of the heating furnace. The front shutoff openings coupled to operate as the front cutoff rods of the closed front shutoff cylinder are formed to be blocked and opened to the front opening of the heating furnace. The front block and rear in the pressurized state with a vacuum is provided with a blocking portion formed to block and open the rear block opening coupled to the rear block opening of the rear block cylinder provided in the body side of the body portion to the rear opening of the heating furnace Each of the blocking openings operates to heat the heating element in a state in which the opening of the heating furnace is closed, thereby providing an effect of improving thermal efficiency.

In addition, the vacuum furnace of the present invention forms a cooling tower for supplying cooling water to the upper one side of the body of the body of the vacuum furnace for dissolving and heat treatment, and connects the cooling exchange part for exchanging the cooling water of the cooling tower to the side of the body And a cooling supply unit for supplying the cooling water exchanged to the lower part of the cooling exchange unit, and a cooling frame formed to have a cooling space toward the rear cover side of the body part by a plurality of cooling tubes having corrugations. It has a cooling unit formed to supply the cooling water supplied to the cooling pipe, and the air blower formed with a plurality of guide vanes inside the cooling space of the cooling unit, and provided with a blower formed a blower motor for operating the blower blower The cooling water supplied from the tower and the cooling exchange part is exchanged to provide efficient cooling water. The cooling water is supplied to the cooling tube connected to the cooling frame formed with a plurality of cooling pipes having the pleated portion, and the cooling water is supplied to the cooling tube provided in the cooling space by the rotation of the blower blower which is rotated by the rotation of the blowing motor. Accordingly, the cooling fluid is efficiently supplied at the blowing pressure, thereby providing an effect of increasing the cooling efficiency.

In addition, the vacuum furnace of the present invention is heated by blocking the heating furnace of the vacuum furnace to perform the melting and heat treatment operations by charging the metal in the vacuum state to the blocking portion to improve the thermal efficiency, improve the speed of the heating process, and at the time of cooling When the blower is rotated by operating the blower motor with the blocking unit removed from the heating furnace, the cooling fluid supplied by the cooler supplied by the coolant connected to the cooling frame is supplied at the pressure of the blower. Convection inside to cool the charged metal uniformly to improve the cooling efficiency, thereby maximizing the heating efficiency and cooling efficiency to dissolve and heat the metal at a quick and uniform temperature to quickly dissolve and heat the good metal. This provides the effect of improving productivity.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary and will be understood by those of ordinary skill in the art that various modifications and variations can be made therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (4)

The flange part is formed on both sides of the body for dissolving and heat-treating metal in a vacuum state, the front cover is formed on the front side of the flange part, the rear cover is formed on the rear side of the flange part, and the vacuum pressure is applied to one side of the body. A body part which forms a pressurized vacuum part to pressurize, It is formed of a heat insulating member having a heating element in the center of the body portion to form a heating furnace for heating and dissolving and heat-treating with a heating element, and forms a front opening opening in front of the heating furnace, rearward to the rear of the heating furnace The heating furnace part which formed the fart, A blocking portion which forms a front blocking opening acting as a front blocking cylinder to block the front opening opening of the heating furnace section, and a rear blocking opening acting as a rear blocking cylinder to block the rear opening opening of the heating furnace section; A cooling unit configured to supply cooling water supplied from a cooling supply unit configured to supply cooling water to the body side of the body unit to a cooling frame connected to a plurality of cooling tubes to form a cooling space; And a blower forming a blower blower having a plurality of guide vanes in the cooling space of the cooling unit and forming a blower motor for operating the blower blower. The method of claim 1, The body part is coupled to the front cover by a hinge to fix the fastener to form a fixed fastener in the state of loading the metal inside while rotating to the hinge portion, while forming an air distribution hole in the rear cover while circulating the internal air during cooling A vacuum furnace characterized in that configured to cool. The method of claim 1, The blocking unit is formed to block and open the front blocking opening coupled to the front opening of the heating furnace to be operated by the front blocking rod of the front blocking cylinder provided to one side of the front cover of the body, and the rear blocking provided on the body side of the body A vacuum furnace, characterized in that configured to be blocked and opened to the rear opening opening of the heating furnace coupled to the rear blocking opening to operate as the rear blocking rod of the cylinder. The method of claim 1, The cooling unit forms a cooling tower on one side of the upper body, and forms a cooling exchange part for exchanging cooling water of the cooling tower on the side of the body, and forms a cooling supply part for supplying the cooling water exchanged to the lower part of the cooling exchange part. The cooling frame connected to the cooling pipe while exchanging the cooling water is formed by supplying the cooling water supplied from the cooling supply part to the cooling pipe connected to a plurality of cooling pipes having wrinkles in the cooling frame formed to have a cooling space toward the center of the rear cover side of the unit. Vacuum furnace, characterized in that configured to be supplied to.

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