KR102024767B1 - A Multipurpose small quenching apparatus - Google Patents

Abstract

The present invention relates to a quench furnace for changing a structure by heating and quenching a metal. The multi-purpose compact quenching furnace according to the embodiment of the present invention includes a heating chamber unit in which a heater for heating a target object is installed, and a quenching chamber portion positioned under the heating chamber to quench the fluid by quenching the target object. In the multi-purpose compact quenching furnace, the heating chamber portion supports the object to be processed while being positioned at an inner central portion of the heating chamber part, and is slidably moved in a state where the heating is completed in the heating chamber part. A finger seating portion for dropping the workpiece to the quenching chamber portion, and positioned below the finger seating portion to close the heating chamber to block heat from being transferred to the bottom of the heating chamber, and to the quenching chamber. It includes a heat insulating shutter portion that opens the lower end of the heating chamber portion when water falls. Therefore, not only the heat treatment can be performed under various conditions, but also the manufacturing cost can be reduced with a relatively simple structure.

Description

A multipurpose small quenching apparatus

The present invention relates to a quench furnace for changing a structure by heating and quenching a metal.

In general, in order to increase the hardness of the metal, quenching is called quenching.

Quenching is carried out in the form of heating the metal to a high temperature and then quenching it to prevent changes occurring inside the metal or alloy, thereby making the structure compact by maintaining a stable or intermediate state at a high temperature in a low temperature or a greenhouse. .

Such a device for performing quenching has been disclosed in the prior art "Hot gas quenching device" of Korean Patent Publication No. 10-0591355 (2006.6.19.).

Conventional hot gas quenching apparatus is provided with the following requirements (1) to (12), and (1) a workpiece receiving portion (inner space of the preheating furnace) for storing the workpiece W preheated to the quenching start temperature. And (2) a hot gas circulation path for maintaining hot gas at a temperature TB determined at a temperature near the isothermal transformation point temperature TA of the workpiece, apart from the space for preheating the workpiece W, and (3) The hot gas circulation passage always maintains the hot gas in the circulation passage until the quenching of the workpiece is started, and (4) the workpiece accommodating portion is connected through the distributor and the output end of the circulation passage 10, (5) The flow path passing through the control window on one side is the first flow path (for high temperature) and the flow path passing through the control window on the other side is the second flow path (for low temperature). To the second flow path F2 The gas room temperature cooling device which cools the passing gas to the temperature near normal temperature by the normal temperature refrigerant is provided, (6) The mixer which mixes the gas output from both flow paths uniformly in the rear end of the said 1st, 2nd flow path is provided. (7) until the start of quenching of the workpiece, the control window is opened to form a shape in which the workpiece is disposed in the circulation path, and (8) the temperature of the gas passing through the mixer becomes the hot gas temperature TB. A controller for adjusting the opening degree of the control window is installed, and (9) the hot gas inside the circulation path is blown into the workpiece to be quenched with a hot gas having a temperature TB, and then a predetermined temperature is set just above the transformation point temperature TA of the workpiece. A controller isothermally maintained to achieve a target temperature), (10) a heater for preventing cooling by heat dissipation is provided during isothermal holding, and (11) isothermal Afterwards, the workpiece is quenched by gas cooling to a temperature below room temperature. (12) In the circulation path 10, a heat storage type having a heat capacity of 3 to 100% of the heat capacity of the workpiece in order to control hot gas at a stable temperature. It was comprised by placing a contact material.

In the conventional hot gas quenching apparatus having such a configuration, by supplying hot gas into the low temperature portion and the high temperature portion, the hot gas temperature can be arbitrarily changed to perform various metal heat treatments.

However, in the conventional hot gas quenching device, since the low temperature part and the high temperature part are disposed adjacent to each other, thermal efficiency is not high due to mutual heat transfer, and heating is possible only in a gas atmosphere, but not in a vacuum state, thereby performing various heat treatments. There was no problem.

In addition, since the workpiece is moved laterally to perform heat treatment, a drive mechanism for moving the workpiece is required, which results in a complicated structure and a high manufacturing cost.

The present invention has been made to solve the problems as described above, the problem to be solved by the present invention is to manufacture a relatively simple structure by moving the object to be processed by free fall between the heating chamber and the quenching chamber. Not only can reduce the manufacturing cost, but also increase the heat insulation efficiency between the heating chamber and the quenching chamber to increase the heat treatment efficiency due to heat transfer, and by selecting the vacuum and gas atmosphere to perform heat treatment, It is to provide a multi-purpose compact quenching furnace capable of performing heat treatment under the conditions.

In addition, by providing a variety of safety means to provide a multi-purpose small quench furnace that can provide a uniform heat treatment quality by generating an explosion and a uniform gas atmosphere during heat treatment.

The multi-purpose compact quenching furnace according to the embodiment of the present invention for solving the above problems is located in the heating chamber portion, the heating chamber portion is installed, the heater to heat the object to be sprayed to the object to be treated In the multipurpose compact quenching furnace including a quenching chamber portion for quenching, the heating chamber portion supports the workpiece with the workpiece positioned in an inner central portion of the heating chamber portion, and heating is performed in the heating chamber portion. A finger seating part which slides in the terminated state to drop the workpiece to the quenching chamber part, and is positioned below the finger seating part to close the heating chamber part to block heat from being transferred to the bottom of the heating chamber part. And a heat insulating shutter part which opens the lower end of the heating chamber part when the object is dropped into the quench chamber part.

The heating chamber part may include a vacuum mechanism that sucks air from the heating chamber part to vacuum the inside of the heating chamber part, and a gas injector that injects gas into the heating chamber part so that the object is heated in a gas atmosphere. Can be.

The heating chamber part is provided in the heating chamber part to exhaust the heating chamber part, an exhaust selection valve installed in the exhaust line to selectively open and close the exhaust line, and the exhaust selection valve bypasses the exhaust It may include a bypass line provided with a safety valve which is opened when a failure of a selection valve or a pressure greater than a predetermined pressure occurs in the heating chamber.

A sealing gate valve disposed between the heating chamber part and the quenching chamber part to seal the heating chamber part in order to make the interior of the heating chamber part into a gas atmosphere or a vacuum state and to open the quenching chamber part when the object is dropped. can do.

The heating chamber part may include an afterburner for burning and dissipating hydrogen discharged from the heating chamber part when hydrogen is filled in the heating chamber part.

And a receiving tray in which the object is received to bring the object into the heating chamber, wherein the receiving tray reduces the impact delivered to the object when falling into the quench chamber part. It may include a buffer piece protruding from the bottom of the.

A buffer guide provided between the heating chamber part and the quenching chamber part to insert the accommodating tray so as to reduce the falling speed of the accommodating tray by air resistance when the accommodating tray falls from the heating chamber part to the quenching chamber part. It may include.

According to the present invention, the workpiece is heated in the heating chamber located at the upper portion and then the workpiece is moved to the quenching chamber located at the lower portion by the free fall, so that the heating chamber and the quench chamber are not required without a separate moving mechanism. It is possible to move the object to be treated, relatively simple structure, there is an advantage that can reduce the manufacturing cost.

In addition, a vacuum mechanism and a gas injector are connected to the heating chamber to be selectively heated in a vacuum or gas atmosphere, thereby performing heat treatment under various conditions.

In addition, the space between the heating chamber portion and the quench chamber portion is separated by the connecting casing portion, and a closed gate valve is installed to clearly distinguish the heating chamber portion and the quench chamber portion, thereby preventing a drop in vacuum degree and gas leakage. Minimize heat transfer to the liver to improve heat treatment efficiency.

In addition, an exhaust selection valve and a bypass line are installed in the exhaust line to create a uniform gas atmosphere to perform heat treatment of uniform quality, and an explosion-proof valve is installed to prevent explosion of the heating chamber part at a sudden increase in pressure. You can prevent it.

In addition, the connecting casing unit is provided with a buffer guide for moving the object to be dropped, the buffer is provided in the receiving tray to cushion the damage can be minimized by the fall of the object and the receiving tray.

1 is a perspective view showing a multi-purpose miniature quenching furnace according to an embodiment of the present invention.
Figure 2 is a side view showing a multi-purpose miniature quench road in accordance with an embodiment of the present invention.
3 is a plan view showing a multi-purpose compact quenching furnace according to an embodiment of the present invention.
Figure 4 is a schematic side cross-sectional view showing a multi-purpose miniature quench road in accordance with an embodiment of the present invention.
5 is a schematic side cross-sectional view showing a multi-purpose miniature quenching furnace according to an embodiment of the present invention, showing the state of movement of the workpiece to the quench chamber portion.
6 is a side view showing an explosion-proof valve constituting a multi-purpose compact quenching furnace according to an embodiment of the present invention.
7 is a perspective view of the receiving tray constituting the multi-purpose compact quenching furnace according to an embodiment of the present invention from the bottom.

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

1 to 5, the multipurpose compact quenching furnace 100 according to the embodiment of the present invention may include a heating chamber part 110.

The heating chamber 110 may be heated to heat-treat the workpiece QCO.

On the other hand, the heating chamber 110 has a receiving space therein to receive the object to be processed (QCO) is formed, the inner periphery of the receiving space may be provided with a heater 111 for heating by electricity, the heater 111 In the center of the) to be processed (QCO) may be heated by the heater 111 located around.

In addition, a heat insulating material 112 may be installed between the heater 111 and the heating chamber part 110 to block the heat of the heater 111 from being discharged to the outside, and the heater 111 has excellent heating property. It may be formed of graphite.

In this case, the heating temperature of the heater 111 may vary depending on the object QCO, but the heating chamber 110 may be heated to a temperature of about 1300 ° C. by the heater 111.

In addition, a power line connector 113 to which a power line 118 for supplying electricity to the heater 111 may be formed in the heating chamber 110, and the power line 118 may be connected to the water jacket to prevent overheating. Can be surrounded by.

In addition, an opening and closing lid 130 may be installed at an upper portion of the heating chamber 110 to open and close an accommodation space to bring in the object to be treated (QCO), and the opening and closing lid 130 may be formed in the heating chamber 110. The heating chamber 110 may be firmly fixed to the heating chamber 110 by the sealing jig installed at the top.

In addition, a circulation passage 115 may be formed in the wall of the heating chamber 110 to circulate and cool the cooling water to block the heating of the heating chamber 110 due to the heat of the heater 111. The chamber 110 may include a cooling water supply port for supplying cooling water to the circulation passage 115 and a cooling water discharge port discharged after the cooling water supplied to the circulation passage 115 circulates through the heating chamber 110.

At this time, the cooling water may be supplied to the opening and closing lid 130 and the connection casing 140, respectively, and cooled.

On the other hand, the heating chamber 110 may be connected to a vacuum mechanism 181 for sucking the internal air of the heating chamber 110 to create a vacuum state to be heated in a vacuum state when the workpiece (QCO) is heated, In the heating chamber 110, an air inlet 116 through which air is sucked for vacuum may be formed.

In addition, a gas injector 185 may be installed in the heating chamber part 110 to heat the workpiece QCO in a gas atmosphere, and a heating chamber part in the gas injector 185 may be installed in the heating chamber part 110. A gas inlet for injecting gas into the gas may be formed separately, and the gas inlet may replace the gas inlet in the form of injecting gas into the air inlet 116 to which the vacuum mechanism 181 is connected. can do.

Here, the gas discharge port in the heating chamber 110 may be discharged at the same pressure or the same supply amount or the same speed as the gas injected into the gas inlet to maintain a uniform gas atmosphere while heating the workpiece (QCO) A collector for collecting gas may also be connected.

As shown in FIGS. 4 and 5, the heating chamber part 110 may be formed in a shape through which the lower part is penetrated, and a finger on which the workpiece QCO is seated in the lower center portion of the heating chamber part 110. The seating unit 121 may be installed, and the finger seating unit 121 may be formed in the shape of a finger, and the workpiece QCO may be seated thereon.

When the heating of the workpiece QCO is completed, the finger seating part 121 is heated to allow the workpiece QCO to fall to the quench chamber 160 positioned below the heating chamber 110. In the center of the chamber unit 110 may be installed to be movable by the finger cylinder 120 around the heating chamber unit 110.

4 and 5, the lower portion of the heating chamber 110 has a lower portion of the heating chamber 110 to prevent heat from the heater 111 from being transferred to the quenching chamber 160. An insulation shutter 126 to insulate the lower portion may be installed, and the insulation shutter 126 moves the insulation shutter formed of the insulation 112 to the open lower end of the heating chamber 110 to the shutter cylinder 125. The lower end of the heating chamber 110 may be opened or closed.

Here, the adiabatic shutter 126 may be located below the finger cylinder 120.

5 and 6, the heating chamber 110 may be provided with an exhaust line 135 for discharging the gas injected into the heating chamber 110 to the outside, the exhaust line 135 An exhaust selection valve 136 may be installed to selectively exhaust or block the gas injected into the heating chamber 110.

When the heating chamber 110 is in a vacuum atmosphere, the exhaust line 135 may introduce air for releasing the vacuum so that the opening and closing lid 130 can be easily opened and closed.

In addition, an exhaust selection valve 136 may be installed in the exhaust line 135 to exhaust or shut off the gas injected into the heating chamber 110 to the exhaust line 135, and the exhaust selection valve 136 may be heated. The displacement of the injected gas may be adjusted so that the pressure of the gas injected into the chamber 110 may maintain a preset pressure.

Meanwhile, a bypass line 137 formed of a pipe may be installed in the exhaust line 135 so that the gas discharged from the exhaust port may be bypassed and discharged without passing through the exhaust selection valve 136.

In addition, the safety valve 138 is installed in the bypass line 137 so that the pressure of the heating chamber 110 is higher than the preset pressure or the safety valve 138 is opened when the exhaust selection valve 136 fails. The pressure may prevent the internal pressure of the heating chamber 110 from increasing.

In addition, the explosion-proof valve 132 is installed in the heating chamber part 110 to prevent the explosion of the heating chamber part 110 due to the sudden increase in pressure of the heating chamber part 110.

On the other hand, the explosion-proof valve 132 is provided with an explosion-proof opening 131 for reducing the pressure by exhausting the exhaust line 135 is installed in the heating chamber 110, the explosion-proof opening (131) The valve seat 134 for opening and closing the 131 may be installed, and the valve seat 134 may be configured to have an exhaust line 135 installed with a bypass line 137.

In addition, the valve seat 134 is installed to seal the explosion-proof opening 131 by the elastic force of the valve spring 133 in the explosion-proof opening 131, and when the normal pressure acts on the heating chamber 110, the valve seat 134 Gas is exhausted through the exhaust line 135 installed in the), but when the pressure is rapidly increased in the heating chamber 110, the pressure applied to the valve seat 134 overcomes the elastic force of the valve spring 133 It is possible to prevent the explosion of the heating chamber 110 due to the pressure increase in the form of opening the explosion-proof opening (131).

1 to 6, the multipurpose compact quenching furnace 100 according to the embodiment of the present invention may include a quenching chamber unit 160.

The quenching chamber 160 may be positioned below the heating chamber 110 to cool down the workpiece QCO heated in the heating chamber 110.

On the other hand, the inner circumference of the quench chamber 160 may be quenched in the form of cooling the heated object QCO by spraying the coolant into the quench chamber 160.

In addition, a plurality of medium supply openings may be formed around the quenching chamber 160 to supply the refrigerant to the quenching chamber 160.

In addition, a coolant discharge port 161 may be formed at a lower portion of the quench chamber 160 to discharge the coolant to cool the object QCO to the outside, and the coolant discharge port 161 may discharge or block the coolant. A refrigerant discharge valve 163 may be installed.

In addition, the refrigerant discharge port 161 is installed to be detachable from the lower portion of the quenching chamber 160 to be quenched in the quenching chamber 160 in a form in which the refrigerant discharge port 161 is separated from the quenching chamber 160. QCOs can be exported.

Here, the quenching chamber 160 may be formed to have a discharging port for discharging the workpiece QCO by partially cutting it, and an unloading door (not shown) for opening and closing the quenching chamber 160 may be installed at the discharging opening. Can be.

In addition, a transparent viewing window may be installed in the export door to see the processing process of the object to be cooled (QCO) cooled by the refrigerant from the outside.

Meanwhile, the coolant supplied to the quench chamber 160 may be gas or water.

In addition, the refrigerant discharge port 161 is connected to each other by a circulation passage 115 of the heating chamber 110 and a pressure reducing pipe 165 in the form of a pipe to heat the workpiece QCO heated in the quench chamber 160. The steam generated during quenching is discharged due to the pressure and the temperature being dropped while passing through the circulation passage 115 through the refrigerant outlet 161, thereby causing a burn accident or an electric short circuit accident due to the steam discharged from the refrigerant outlet 161. Can be prevented.

At this time, the refrigerant discharge valve 163 is configured to discharge the refrigerant to the pressure reducing pipe 165 when the pressure is greater than the preset pressure, and directly to the refrigerant discharge port 161 when the refrigerant discharge pressure is less than the predetermined pressure, according to the discharge pressure of the refrigerant. The refrigerant may be effectively discharged, and the pressure reducing tube 165 may be connected to the circulation passage 115 formed in any one of the heating chamber 110, the opening and closing lid 130, or the connection casing 140.

In the embodiment, the pressure reducing pipe 165 is configured to connect the refrigerant outlet 161 and the connection casing unit 140 to each other.

1 to 5, the multi-purpose compact quenching furnace 100 according to the embodiment of the present invention may include a connection casing 140.

The connection casing 140 may be connected such that the heating chamber 110 and the quenching chamber 160 are spaced apart from each other in order to minimize heat transfer between the heating chamber 110 and the quenching chamber 160.

On the other hand, the connection casing portion 140 may be formed in a hopper shape through which the upper portion is wider and the lower portion is narrow, the heating chamber portion 110 may be installed on the upper portion of the connection casing portion 140, the connection casing The quench chamber unit 160 may be installed below the unit 140.

In addition, a buffer guide 141 may be installed across the upper and lower portions of the connecting casing 140, and the buffer guide 141 may be formed in a hollow circular pipe shape. have.

Here, the shock absorbing guide 141 generates air resistance in the accommodation tray 170 in which the object to be treated (QCO), which will be described below, is accommodated, so that the impact of the accommodation tray 170 falling to the quench chamber 160 Can be buffered.

At this time, the inner diameter of the buffer guide 141 is formed to a size close to the size of the outer diameter of the receiving tray 170, when the receiving tray 170 is inserted into the buffer guide 141 falls, the inside of the buffer guide 141 Damage of the accommodation tray 170 due to the fall of the accommodation tray 170 and the damage received inside the blood is reduced by reducing the speed at which the accommodation tray 170 falls by air resistance in the form of pushing the air in the accommodation tray 170 Damage to the treatment (QCO) can be minimized.

As shown in FIGS. 4 and 5, the multipurpose compact quenching furnace 100 according to the embodiment of the present invention may include a closed gate valve 150.

The closed gate valve 150 may open and close the lower portion of the heating chamber 110 to prevent a drop in the degree of vacuum due to the discharge of the gas injected into the heating chamber 110 or the inflow of air.

On the other hand, the closed gate valve 150 may be configured such that the gate plate is rotated by the drive mechanism to selectively seal or open the lower portion of the heating chamber 110.

In addition, the closed gate valve 150 has a function of blocking the steam generated when the to-be-processed object QCO is cooled by the refrigerant into the heating chamber 110 and the heat of the heating chamber 110 is rapidly cooled. A function of blocking the flow into the unit 160 may also be performed.

On the other hand, the closed gate valve 150 is installed in the lower portion of the connecting casing 140 may completely partition the internal space of the heating chamber 110 and the internal space of the quenching chamber 160.

As shown in FIG. 7, the multipurpose compact quenching furnace 100 according to the embodiment of the present invention may include a receiving tray 170.

The accommodation tray 170 may perform quenching in a state in which the workpiece QCO is received in order to prevent loss of the workpiece QCO.

On the other hand, the receiving tray 170 may be configured so that the periphery is formed of a mesh net 173 so that the heat of the heater 111 is easily transmitted to the received object (QCO), the upper portion of the receiving tray 170 and The lower part may be closed by the upper cap 171 and the lower cap 172 in which a plurality of through holes are formed.

The upper cap 171 and the lower cap 172 may be screwed to the mesh net 173, or the upper cap 171 and the lower cap 172 may be coupled to each other in a form in which a bolt penetrates and is fastened by a nut. Can be.

In addition, in the central portion of the receiving tray 170, the heat of the heater 111 is transferred to the central portion of the receiving tray 170, so that the upper cap 171 and the lower portion to heat the entire circumference of the workpiece (QCO) A heat pipe 174 in the form of a pipe penetrating the central portion of the cap 172 may be installed.

And, the lower portion of the accommodating tray 170 is accommodated to reduce the impact acting on the accommodating tray 170 when the accommodating tray 170 falling freely from the heating chamber part 110 falls into the quenching chamber part 160. A plurality of buffer pieces 175 that are bent from the periphery of the tray 170 toward the lower center may be provided along the periphery of the accommodation tray 170.

The operation and effects between the components described above will be described.

The multi-purpose compact quenching furnace 100 according to the embodiment of the present invention opens and closes the opening and closing lid 130 of the heating chamber part 110 in a state in which the workpiece (QCO) is accommodated in the accommodation tray 170. The receiving tray 170 is seated in the inner space and the opening and closing lid 130 is closed to seal the heating chamber part 110.

At this time, the opening and closing lid 130 is a hydraulic or pneumatic cylinder 210 is installed in the frame 200 for installing the multi-purpose small quencher 100 is lifted from the heating chamber 110 by this cylinder 210 The heating chamber 110 may be lowered in the direction in which the heating chamber 110 is positioned in a closed state or closed.

When the opening / closing lid 130 is closed, the opening / closing lid 130 is firmly fixed to the heating chamber 110 by the sealing jig so that the heating chamber 110 is not opened by the pressure.

On the other hand, when the workpiece QCO is loaded into the heating chamber 110, the vacuum mechanism 181 is operated by operating the vacuum mechanism 181 when the interior of the heating chamber 110 is vacuumed according to the heat treatment conditions. The inside of the heating chamber 110 is made in a vacuum state to suck the air inside the heating chamber 110 through the vacuum.

On the other hand, when making the interior of the heating chamber 110 in a gas atmosphere state according to the heat treatment conditions, the gas injector 185 is operated to inject a desired gas into the interior of the heating chamber 110 so that It is created in a gas atmosphere inside.

In this case, the gas supplied to the heating chamber 110 is supplied from the gas injector 185 to the heating chamber 110 through the gas inlet, and when a gas of a predetermined pressure is injected, the gas is discharged through the gas outlet. It is possible to create a uniform gas atmosphere while continuously supplying gas.

When the inside of the heating chamber 110 has a vacuum or gas atmosphere, the heater 111 is operated to heat the object QCO for a predetermined time to a preset temperature.

On the other hand, when the workpiece QCO is heated in the heating chamber 110 for a preset temperature and a predetermined time, the operation of the heater 111 is stopped and the vacuum or gas atmosphere of the heating chamber 110 is released. do.

In this case, when the vacuum of the heating chamber 110 is released, the exhaust selection valve 136 is opened to supply external air to the heating chamber 110 or exhaust gas selected from the heating chamber 110 is selected. The valve 136 is opened and discharged to the outside through the exhaust line 135.

At this time, when the gas injected into the heating chamber 110 is hydrogen, the afterburner 139 is operated to extinguish the discharged hydrogen to prevent explosion due to the discharge of hydrogen.

Meanwhile, when the vacuum or gas atmosphere is released from the heating chamber 110, the closed gate valve 150 opens the quench chamber 160 so that the workpiece QCO may fall into the quench chamber 160. In addition, the adiabatic shutter 126 opens the lower portion of the heating chamber 110.

In addition, when the closed gate valve 150 and the adiabatic shutter 126 open the quench chamber 160 and the heating chamber 110, respectively, the finger seating part 121 moves into the heating chamber 110. While being inserted, the workpiece QCO supported by the finger seating portion 121 freely falls toward the lower portion where the quenching chamber portion 160 is located.

Here, the free-fall object (QCO) is passed through the buffer guide 141 formed in the connecting casing 140, the falling speed is reduced by the resistance of the air, passing through the buffer guide 141, the quench chamber portion The workpiece QCO falling to the 160 is absorbed by the buffer piece 175 protruding from the lower portion of the accommodation tray 170 for receiving the workpiece QCO, thereby receiving the workpiece QCO and the accommodation. Damage to the tray 170 can be minimized.

On the other hand, when the workpiece QCO falls into the quenching chamber 160, the closed gate valve 150 seals the quenching chamber 160, and the quenching chamber 160 cools to perform quenching. Is injected into the quench chamber 160.

When the workpiece QCO is quenched by the refrigerant at a predetermined time or at a predetermined temperature in the quenching chamber 160, the medium outlet of the quenching chamber 160 is separated or the quench chamber 160 is quenched. When the export door is installed, the quenched object QCO is carried out through the export door, and the quenching is completed in the form of separating the object QCO from the receiving tray 170.

In addition, when heating is performed in the heating chamber 110, the pressure of the gas may be adjusted so that a uniform gas atmosphere may be formed by adjusting the amount of gas discharged from the exhaust selection valve 136, and the exhaust selection valve 136. If a failure occurs, the gas may be discharged through the safety valve 138 installed in the exhaust line 135 to prevent excessive pressure rise.

In addition, when a sudden pressure that cannot be resolved through the safety valve 138 occurs in the heating chamber part, the valve seat 134 provided with the exhaust line 135 supported by the valve spring 133 is provided with a valve spring 133. Explosion-proof valve 132 in the form of opening the explosion-proof opening 131 of the heating chamber 110 by overcoming the elastic force of the) can prevent the explosion of the heating chamber 110.

In addition, the refrigerant discharge port 161 is connected to a circulation passage 115 for cooling the heating chamber 110 through a pressure reducing line so that steam generated when cooling the object QCO by the refrigerant is a circulation passage 115. By discharging to the outside in a state where the pressure and temperature are reduced through), the occurrence of a burn accident can be prevented.

Therefore, the multi-purpose compact quenching furnace 100 according to the embodiment of the present invention can perform quenching on the workpiece QCO in a vacuum or various kinds of gas atmospheres, and is avoided in the heating chamber 110 of the upper portion. It is configured to move the processed material to the quenching chamber 160 by free fall, thereby reducing the manufacturing cost by a relatively simple configuration.

In addition, the exhaust selection valve 136 and the safety valve 138 is installed to maintain a uniform pressure not only to perform a uniform heat treatment, but also explosion-proof valve 132 is installed in the heating chamber part due to an abnormal pressure increase The explosion of 110 can be prevented.

In addition, when hydrogen is injected into the gas to create a gas atmosphere, since the hydrogen is burned and extinguished by the afterburner 139, the risk of explosion due to hydrogen can be minimized.

In addition, the adiabatic shutter 126 and the closed gate valve 150 is installed to not only heat transfer between the heating chamber 110 and the quenching chamber 160, but also the heating chamber 110 and the quenching chamber. By partitioning the portions 160, the vacuum degree of the heating chamber 110 and the leakage of the injected gas may be minimized.

In addition, the connection casing unit 140 is provided with a buffer guide 141 for buffering when the object (QCO) falls, as well as the buffer tray 175 is installed in the receiving tray 170 to free fall Damage to the workpiece QCO and damage to the accommodation tray 170 may be minimized.

In addition, the refrigerant outlet 161 is not connected to the circulation line by the pressure reducing line, but instead of discharging the steam generated in a state in which the pressure and temperature are reduced through the circulation line to cause burns or electric short circuit accidents due to steam. Can be prevented.

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and the present invention is easily changed and equivalent to those of ordinary skill in the art to which the present invention pertains. Includes all changes and modifications to the scope of the matter.

100: multi-purpose small quenching furnace 110: heating chamber
111: heater 112: heat insulating material
113: power line connector 115: circulation flow path
116: air intake 118: power line
120: finger cylinder 121: finger seat
125: shutter cylinder 126: insulating shutter portion
130: opening and closing lid 131: explosion-proof ball
132: explosion-proof valve 133: valve spring
134: valve seat 135: exhaust line
136: exhaust selection valve 137: bypass line
138: safety valve 139: afterburner
140: connecting casing 141: buffer guide
150: closed gate valve 160: quench chamber portion
161: refrigerant outlet 163: refrigerant discharge valve
165: pressure reducing pipe 170: receiving tray
171: upper cap 172: lower cap
173: mesh network 174: heat transfer tube
175: buffer piece 181: vacuum mechanism
185: gas injector 200: frame
210: cylinder QCO: workpiece

Claims (7)

In the multi-purpose compact quench furnace comprising a heating chamber portion in which a heater for heating a workpiece is installed, and a quenching chamber portion positioned below the heating chamber portion to quench and quench fluid to the workpiece,
The heating chamber portion
The object is supported by the object in a state in which the object is positioned in the inner central portion of the heating chamber part, and the sliding part moves in a state where the heating is completed in the heating chamber part to drop the object to the quench chamber part. Finger Rest,
An insulating shutter unit positioned under the finger seating unit to close the heating chamber to block heat from being transferred to the lower portion of the heating chamber, and to open the lower end of the heating chamber when the object is dropped into the quench chamber; And
When the hydrogen is filled in the interior of the heating chamber, multi-purpose compact quenching furnace comprising an afterburner for burning off the hydrogen discharged from the heating chamber. The method of claim 1,
The heating chamber portion
A vacuum mechanism for sucking the air in the heating chamber part to make the inside of the heating chamber part in a vacuum state; and
And a gas injector for injecting gas into the heating chamber so that the object is heated in a gas atmosphere. The method of claim 1,
The heating chamber portion
An exhaust line installed in the heating chamber to exhaust the heating chamber;
An exhaust selection valve installed at the exhaust line to selectively open and close the exhaust line;
And a bypass line provided with a safety valve which bypasses the exhaust selection valve and opens when a failure of the exhaust selection valve or a pressure greater than a preset pressure occurs in the heating chamber. The method of claim 1,
A sealing gate valve disposed between the heating chamber part and the quenching chamber part to seal the heating chamber part in order to make the interior of the heating chamber part into a gas atmosphere or a vacuum state and to open the quenching chamber part when the object is dropped. Multipurpose compact quenching furnace, characterized in that. delete The method of claim 1,
And a receiving tray in which the object to be processed is carried in to bring the object into the heating chamber.
The accommodating tray is a multi-purpose compact quencher, characterized in that it comprises a buffer piece protruding from the lower portion of the accommodating tray in order to reduce the impact delivered to the workpiece when falling into the quench chamber portion. The method of claim 6,
A buffer guide provided between the heating chamber part and the quenching chamber part to insert the accommodating tray so as to reduce the falling speed of the accommodating tray by air resistance when the accommodating tray falls from the heating chamber part to the quenching chamber part. Multipurpose compact? Characterized in that it comprises a.

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