KR20120044131A - Apparatus for cooling back side of welding part in electro gas welding - Google Patents

Abstract

PURPOSE: A device for cooling the rear surface of a welded portion in electro-gas welding is provided to improve the cooling property on a welded portion by sprinkling liquid alcohol mixed with compressed air to the rear surface of the welded portion. CONSTITUTION: A device for cooling the rear surface of a welded portion in electro-gas welding comprises a cooling spray unit(110), a liquid alcohol storage unit(102), and a compressed air storage unit(104). The cooling spray unit sprays liquid alcohol mixed with compressed air to the rear surface of a welded portion in large heat input welding in order to prevent the reduction of cooling speed on the welded portion. The liquid alcohol storage unit is connected through a pipe(106) to the cooling spray unit and stores liquid alcohol to be supplied to the cooling spray unit. The compressed air storage unit is connected through pipes to the cooling spray unit and the liquid alcohol storage unit and stores compressed air to be mixed with liquid alcohol supplied to the cooling spray unit.

Description

Cooling device back side of welding part of electrogas welding {APPARATUS FOR COOLING BACK SIDE OF WELDING PART IN ELECTRO GAS WELDING}

The present invention relates to an apparatus for cooling the back side of a welded part of an electro-gas welding. When the high heat input (eg 300 to 600 KJ / cm) welding is performed by the electro-gas welding (EGW), the cooling rate of the welded part decreases. Accordingly, the present invention relates to a welding device backside cooling device of an electrogas welding that can solve a problem of deterioration of mechanical properties on a welding metal and a heat affected zone (HAZ).

Recently, EGW (Electro Gas Welding) has been widely applied in shipbuilding to improve ship productivity and increase automation rate. In particular, welding that requires a large heat input of about 300 to 600 KJ / cm is referred to as high heat input welding. During such high heat input welding, the cooling rate of the weld is severely reduced, and the weld metal and the heat affected zone The mechanical properties for (HAZ) can deteriorate.

In terms of weld metallurgy, the cooling rate of the weld is known to have a great influence on the austenite phase transformation behavior by affecting reactions such as atom diffusion, nucleation and growth.

In general, high heat input welds reduce the cooling rate due to the large heat input, which facilitates the formation of high temperature transformation phases and coarse microstructures. In particular, in the case of the heat affected zone (HAZ), as the cooling rate decreases, Due to the coarsening of austenite grains and the formation of a weak phase at low temperatures, the toughness may be rapidly decreased.

An object of the present invention is to reduce the cooling rate of the welding portion during the high heat input welding of the electro gas welding (EGW) method in the manufacturing process of the ship, etc., the welding metal and the heat affected zone ( In order to solve the problem of impairing the mechanical properties of the HAZ (Heat Affected Zone), the present invention provides a cooling device on the back side of a welded part of an electro-gas welding.

In addition, another object of the present invention is to provide an apparatus for cooling the back surface of a welded part of an electrogas welding, which can improve the mechanical properties by controlling the microstructure by effectively controlling the cooling rate of the welded part in the high heat input welding of the electrogas welding method. Is in.

According to the idea of the present invention, during the high heat input welding, the cooling injection unit formed to spray the liquid alcohol mixed with the compressed air on the back surface of the weld to prevent a decrease in the cooling rate of the weld; A liquid alcohol storage unit connected to the cooling spray unit through a pipe and storing liquid alcohol to be supplied to the cooling spray unit; And a compressed air storage unit connected to the cooling injection unit and the liquid alcohol storage unit through a pipe, and storing compressed air to be mixed with the liquid alcohol supplied to the cooling injection unit. Provide a device.

In this case, an injection pump is installed on the pipe between the liquid alcohol storage unit and the compressed air storage unit, and configured to adjust the hydraulic pressure required to transfer the liquid alcohol mixed with the compressed air to the cooling jet unit. It is desirable to.

And a valve connected to a pipe between the liquid alcohol storage unit and the cooling injection unit and configured to open and control the flow of the liquid alcohol mixed with the compressed air to be transferred to the cooling injection unit. .

In this case, the valve is preferably a solenoid valve for controlling the opening and closing of the flow of liquid alcohol mixed with the compressed air flowing in the pipe receiving the electrical signal transmitted according to the user's command.

The valve may further include an on / off switch electrically connected to the valve so as to receive a command for opening and closing the flow of liquid alcohol mixed with the compressed air from a user.

At this time, the cooling injection unit, the exit side is disposed to face the welding surface, is formed to spray the liquid alcohol mixed with the compressed air to the welding surface, the mouth side is the liquid alcohol storage unit and the compressed air storage unit and the piping An injection nozzle unit connected to each other; And a lifting and lowering unit configured to mount the injection nozzle unit inside and to move up and down vertically along the rear surface of the welding unit.

Here, at the inlet side of the injection nozzle unit, a chamber (chamber) is connected to the liquid alcohol storage unit and the compressed air storage unit through a pipe to temporarily store the liquid alcohol mixed with the compressed air, the chamber May be embedded in the elevating portion.

The injection nozzle unit, the chamber and the mouth side is formed in connection, the injection nozzle tube formed into a plurality of branches in the width direction of the rear surface of the weld; A nozzle valve for opening and closing a flow of liquid alcohol mixed with the compressed air to be injected through the injection nozzle tube; And a nozzle hole provided at the exit side of the injection nozzle tube and configured to spray liquid alcohol mixed with the compressed air to the rear surface of the welding part.

In this case, the nozzle valve is preferably a solenoid valve for controlling the opening and closing of the flow of liquid alcohol mixed with the compressed air flowing through the pipe in response to the electrical signal transmitted according to the user's command.

The lifting and lowering unit may include a driving unit provided to handle the width direction position adjustment of the injection nozzle unit and the lifting and lowering unit of the lifting and lowering unit.

In this case, the drive unit, preferably a servo motor and a gear assembly that is operated by receiving an electrical signal according to a user's command.

In addition, according to the spirit of the present invention, the cooling injection unit formed to prevent the cooling rate of the welding portion is lowered by spraying liquid alcohol mixed with compressed air on the back surface of the welding portion during high heat input welding; A liquid alcohol storage unit connected to the cooling spray unit through a pipe and storing liquid alcohol to be supplied to the cooling spray unit; A compressed air storage unit connected to the cooling spray unit and the liquid alcohol storage unit through a pipe, and storing compressed air to be mixed with the liquid alcohol supplied to the cooling spray unit; A temperature detector which is transferred in advance of the cooling sprayer to detect a temperature of the back surface of the welded part; And determining a degree of decrease in cooling rate on the back surface of the welding part based on the detection information of the temperature detector, and controlling and controlling the injection position and strength of the liquid alcohol mixed with the compressed air to be atomized onto the back side of the welding part through the cooling injection part. It provides a welding device back surface cooling device of the electro-gas welding comprising a control unit.

At this time, the control unit, the data input unit for receiving the temperature of the welding back surface measured by the temperature detector; A data calculation unit for calculating the injection position and strength of the liquid alcohol mixed with the compressed air to be injected onto the welding surface through the cooling spray unit by comparing the input welding surface temperature with the preset temperature reference value; And a data processor configured to process motion control of the cooling jet unit according to the calculated injection position and intensity.

Preferably, the integrated information related to the motion control of the cooling injection unit processed by the data processing unit is received and stored in a wired or wireless communication interface, and is provided to transmit the requested information whenever a user's request on the remote is provided. Integrated management server; may further include.

The display apparatus may further include an output unit configured to receive integrated information regarding motion control of the cooling injection unit processed by the data processor through a wired or wireless communication interface and output the information to a remote user, wherein the output unit is implemented as visual information. Or a printer that prints on printing paper.

According to the present invention, the back side cooling device of the welding part of the electric gas welding, in order to solve the problem that the cooling rate of the welding part decreases during the high heat input welding of the electro gas welding (EGW) method, the compressed air and By atomizing the mixed liquid alcohol, there is an advantageous technical effect that can improve the cooling characteristics for the weld with a slowed cooling rate.

In addition, according to the welding device back surface cooling apparatus of the present invention, the welding metal and the heat affected zone (HAZ) during the high heat input welding of the electro gas welding method by the effect of improving the cooling characteristics of the welding section according to the above. : There is an advantageous technical effect to keep the mechanical properties of the Heat Affected Zone well.

1 is a view schematically showing how an electro gas welding is made,
2 is a view schematically showing the shape of a welded portion to which electrogas welding is applied;
3 is a view schematically showing a welding apparatus rear surface cooling apparatus of the electrogas welding according to the first embodiment of the present invention;
FIG. 4 is a view schematically showing an apparatus for cooling the back surface of a weld of electrogas welding according to the second embodiment of the present invention.

Hereinafter, the welded part backside cooling device of the electrogas welding according to the preferred embodiment of the present invention will be described.

Advantages and features of the present invention and methods for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In addition, in the following description of the present invention, if it is determined that related related technologies and the like may obscure the gist of the present invention, detailed description thereof will be omitted.

Prior to describing preferred embodiments of the welding apparatus backside cooling apparatus of the electrogas welding according to the present invention, the appearance of the electrogas welding will be briefly described.

FIG. 1 is a diagram schematically showing a state in which electro gas welding is performed, and FIG. 2 is a diagram schematically illustrating a shape of a welded portion to which electro gas welding is applied.

Referring to Figure 1, Electro Gas Welding (EGW: Electro Gas Welding), the base material (S) of 15 to 50mm thick to stand vertically to face each other and the copper filler 20 and the backing material (B) on both sides thereof (example : A ceramic backing material) is mounted to prevent molten metal from flowing down, and the welding wire 12 is supplied in a vertical direction through a tip of the welding torch 10 under a protective gas (for example, CO 2) atmosphere to be melted. It refers to a welding process that fills the weld metal and proceeds vertically.

FIG. 2 is a schematic representation of a welding direction in which electrogas welding is performed along a welding line on the base material S, which is perpendicular to each other.

Such electrogas welding is particularly useful in thick plate welding, but it is economical in comparison with other welding methods in that groove processing is simple, each deformation is small, and welding time is relatively shortened.

However, the welding of the thin plate is difficult to use, requires expensive equipment, and requires a separate cooling facility, there is a disadvantage that the mechanical properties of the weld portion during the high heat input welding may be reduced. Here, the large heat input means a relatively large heat input of approximately 300 to 600 KJ / cm.

In such high heat input welding, in particular, the cooling rate of the welding part is further lowered, and the mechanical properties of the welding metal and the heat affected zone (HAZ) may be worsened.

Cooling rate during welding is an important factor that affects austenite phase transformation behavior by affecting reaction of atom diffusion, nucleation and growth, and polygonal ferrite & pearlite if the cooling rate of weld is slow In addition to facilitating the formation of high temperature transformation phases (Polygonal Ferrite & Pearlite), they also attract coarse microstructures.

And as a result, it could act as a cause to inhibit the mechanical properties, especially toughness for the weld.

In the drawings, FIG. 3 is a view schematically showing a welding unit backside cooling apparatus of an electrogas welding according to a first embodiment of the present invention, and FIG. 4 is a welding portion backside cooling of an electrogas welding according to a second embodiment of the present invention. A schematic illustration of the device.

3 and 4 clearly show only the main features in order to conceptually clearly understand the present invention, and as a result, various modifications of the drawings are expected, and as a result the specific shapes shown in FIGS. 3 and 4 The scope of the invention need not be limited.

And the second embodiment of the present invention shown in Figure 4, compared to the first embodiment of the present invention shown in Figure 3 further includes a main configuration that can effectively control the injection function for adjusting the cooling rate The rest of the configuration can be said to be the same as the main configuration of the first embodiment. Therefore, unnecessary redundant description of the same configuration will be omitted.

Hereinafter, the welding portion back surface cooling apparatus of the electrogas welding according to the first and second embodiments of the present invention will be described in detail with reference to FIGS. 3 and 4, respectively.

First embodiment

Referring to Figure 3 will be described in the welding unit back surface cooling apparatus of the electrogas welding according to the first embodiment of the present invention.

As shown, the welding portion back surface cooling apparatus of the electro-gas welding according to the first embodiment of the present invention, in order to solve the problem that the mechanical properties due to the decrease in the cooling rate at the back side of the welding portion during high heat input welding, Cooling injection unit 110 is provided to inject the liquid alcohol mixed with compressed air for the liquid, liquid alcohol storage unit 102 for storing the liquid alcohol to be supplied to the cooling injection unit 110, and the cooling injection unit ( It consists of a configuration including a compressed air storage unit 104 for storing the compressed air to be mixed in the liquid alcohol supplied to 110.

Cooling injection unit 110 is mixed with compressed air on the back of the weld to solve the problem that the mechanical properties (particularly toughness) due to the decrease in the cooling rate at the back of the weld during the high heat input welding using the electro-gas welding. It is responsible for spraying the liquid alcohol made up.

The compressed air and the liquid alcohol required in the cooling injection unit 110 are supplied from the liquid alcohol storage unit 102 and the compressed air storage unit 104, for this purpose, the cooling injection unit 110 and the liquid alcohol storage Part 102 and the compressed air storage unit 104 is preferably made of a structure in communication with each other through the same pipe. Referring to Figure 3, it can be seen the appearance of each configuration connected by such a piping structure.

Further, an injection pump 103 may be further provided on the pipe 106 between the liquid alcohol storage 102 and the compressed air storage 104.

Here, the injection pump 103 is to extract the compressed air from the compressed air storage unit 104, mixes well with the liquid alcohol stored in the liquid alcohol storage unit 102, the mixed liquid liquid of the particulate state It is responsible for providing a hydraulic pressure required to transfer to the cooling injection unit (110).

In addition to the injection pump 103, a valve 107 may be further provided on the pipe between the liquid alcohol storage 102 and the cooling injection unit 110.

Here, the valve 107 is a different functional member that is distinguished from the nozzle valve 116 to be described later, the liquid alcohol mixed with the compressed air through the compressed air storage unit 104 and the liquid alcohol storage unit 102 On the pipe path that can be introduced to the cooling injection unit 110, and serves to control the opening and closing of the flow flow.

In particular, such a valve 107 is preferably an electronic control valve that can be operated by receiving a commanded electrical signal from a user (where the user is a concept of a human configuration including a worker, a task manager, and a supervisor). As a specific example, a solenoid valve may be used.

In addition, in the case where the valve 107 is a solenoid valve, as described above, the on / off switch 108 electrically connected to the valve 107 may be further provided to easily receive a command from the user. It is preferable that it is made into the form to do. As a result, the flow opening and closing of the particulate liquid alcohol withdrawn from the liquid alcohol storage unit 102 and the compressed air storage unit 104 can be more effectively controlled.

Meanwhile, referring to FIG. 3, the structure of the detailed configuration included in the cooling jetting unit 110 may be conceptually confirmed. Hereinafter, the connection relationship, the structure, and the characteristic function of each unit constituting the cooling jetting unit 110 will be described. This will be explained clearly.

The cooling injection unit 110 includes a spray nozzle unit 111 configured to spray large amounts of liquid alcohol mixed with compressed air on the back surface of the welding unit, and the spray nozzle unit 111 is mounted on the spray nozzle unit 111. In addition, the lower carriage as well as the left and right position adjustment is possible to include a moving cart, that is, the lifting cart 120 of the auto carriage (auto carriage) concept.

 First, the injection nozzle unit 111 will be described first.

The spray nozzle part 111 sprays liquid alcohol mixed with compressed air to the rear surface of the welded portion in which the cooling rate is lowered, especially when the electric gas welding to which the present invention is applied is performed, particularly when high heat input welding is performed. It is in charge of spraying.

To this end, the injection nozzle unit 111, the nozzle nozzle provided on the injection nozzle tube 112, the nozzle valve 114 provided in each of the injection nozzle tube 112 and the exit side of the injection nozzle tube 112. 116.

The injection nozzle tube 112 is connected to the chamber 122 formed in the inside of the elevating cart 120 to be described later and the entrance side.

The chamber 122 has a structure in which the liquid alcohol storage unit 102 and the compressed air storage unit 104 and the pipe 106 are formed to communicate with each other, and the liquid alcohol mixed with the compressed air is injected into the injection nozzle tube. It is a space temporarily gathered just before being injected through 112. The chamber 122 may be formed in the interior space of the elevating and lowering unit 120 as shown, but may be provided separately through other embodiments.

The injection nozzle tube 112 connected to the inlet side of the chamber 122 receives liquid alcohol mixed with compressed air.

At this time, the structural shape of the injection nozzle tube 112, as shown in Figure 3, may be formed in a plurality of branches formed in the width direction of the back surface of the welded portion, the number shown is three, but such a number Does not limit the invention.

Each injection nozzle tube 112 may be provided with at least one nozzle valve 114. The nozzle valve 114 functions to finally control the injection of the liquid alcohol mixed with the compressed air through each injection nozzle tube 112.

In particular, the nozzle valve 114 is preferably an electronic control valve that can be operated by receiving an electric signal commanded from a user. As a specific example, a solenoid valve may be used.

In addition, when the nozzle valve 114 is a solenoid valve as described above, the controller 130 may be further provided to be electrically connected to the nozzle valve 114 in order to easily receive a command from the user. As shown in the drawing, the controller 130 includes a display window 132 that implements an operation state as visual information and a keypad 134 composed of a plurality of keys, thereby facilitating user manipulation.

And one nozzle port 114 is provided in the exit side of each injection nozzle tube 112, respectively.

The nozzle port 114 sprays the liquid alcohol mixed with the compressed air introduced through the injection nozzle tube 112, and may have a bellmouth shape as shown in order to exert a more effective spraying function. have.

However, this shape is also merely one exemplary shape according to the present invention, the present invention is not limited thereto and may be modified in various shapes.

The spray nozzle unit 111 as described above may be transported up and down according to the lifting movement of the lifting cart 120 in a state of being mounted or mounted on the lifting cart 120, and at the same time, the left and right positions are also adjusted.

The lifting lowering unit 120 refers to an auto carriage in which the injection nozzle unit 111 is mounted to move up and down vertically along the welded back surface.

The lifting and lowering unit 120 is configured to include a driving unit 124 to adjust the position of the injection nozzle 111 mounted inward in the width direction, as well as to enable the lifting movement of the lifter 120.

That is, according to the motion adjustment of the elevating bogie 120, the injection nozzle 111 is able to effectively control the liquid alcohol mixed with the compressed air according to the upper, as well as the left and right positions can be adjusted on the back of the welded portion. can do.

The driving unit 124 of the elevating and lowering unit 120 may include a thermo motor and a gear assembly operable to receive an electrical signal according to a user's command.

At this time, the combination of the servo motor and the gear assembly, may be applied slightly different for each embodiment, a conventionally widely used configuration, a detailed description thereof will be omitted.

The driving unit 124 may be driven by the controller 130 to control the user's convenience.

As described above, according to the first preferred embodiment of the present invention, when the high heat input welding of the Electro Gas Welding (EGW) method is used, the cooling rate of the welding part may be effectively solved. In particular, the welding metal may be welded. It is possible to maintain good mechanical properties for metals and heat affected zones (HAZ).

Second Embodiment

Referring to Figure 4 will be described in the welding unit back surface cooling apparatus of the electrogas welding according to the second embodiment of the present invention.

Here, the second embodiment of the present invention shown in Figure 4, compared to the first embodiment described above, the embodiment further includes a main configuration that can effectively control the injection function for adjusting the cooling rate for the back surface of the welding portion The other main configuration is the same as that of the first embodiment.

Therefore, unnecessary overlapping descriptions of the main components included in the first embodiment described above with reference to FIG. 3 will be omitted, and only the additional components included in comparison with the first embodiment will be described in detail.

Referring to FIG. 4, the cooling injection unit 110, the liquid alcohol storage unit 102, and the compressed air storage unit 104, which have been described above through the first embodiment, are additionally added to the cooling injection unit 110. The temperature detection unit 140 which is transferred in advance and detects the temperature of the back surface of the weld, and the degree of decrease in the cooling rate on the back surface of the weld based on the detection information of the temperature detector 140, and determines the back surface of the weld through the cooling spray unit 110. Consists of a control unit 150 for controlling and controlling the injection position and strength of the liquid alcohol mixed with the compressed air to be atomized onto the phase.

In particular, the controller 150 determines the degree to which the cooling rate for the welded portion is slowed down through the temperature distribution on the back surface of the welded portion detected by the temperature detector 140, and then, based on the determined information, the cooling sprayer ( Controlling the motion of the 110, wherein the configuration of the controlled cooling injection unit 110, including the lifting bogie 120, the nozzle valve 116 may correspond.

Further, the controller 150 controls the operation of the injection pump 103 as well as the opening and closing control of the valve 107 formed on the pipe 106 connected to the liquid alcohol storage 102 and the compressed air storage 104. It can be in charge of up to, and it is possible to realize the integrated control of the welding unit back surface cooling device of the electrogas welding according to the present invention.

To this end, the controller 150 may compare the data input unit 152 that receives the weld back surface temperature measured by the temperature detector 140 and the input weld back surface temperature with a preset temperature reference value, thereby providing the cooling spray unit ( Data calculation unit 154 for calculating the injection position and the intensity of the liquid alcohol mixed with the compressed air to be injected onto the back of the weld through the 110, and the cooling injection unit 110 in accordance with the calculated injection position and strength It may be formed in a form including a detailed configuration, such as the data processing unit 156 to process the motion control of.

On the other hand, the integrated information about the motion control of the cooling injection unit 110 performed by the data processing unit 156 of the controller 150 may be transmitted to the integrated management server 180 through the wired, wireless communication interface 160. .

The integrated management server 180 not only records and stores the integrated information regarding the motion control of the cooling injection unit 110 received through the interface 160, but also classifies and manages them comprehensively, and uses heat input by using an electric gas welding. It can function to continuously provide technical information necessary for welding to the workplace.

In addition, the integrated information about the motion control of the cooling injection unit 110 performed by the data processing unit 156 of the controller 150 may be transmitted to the output units 172 and 174 through the wired or wireless communication interface 160. have.

Here, the output units 172 and 174 may be configured to allow a user to monitor a real-time situation during high heat input welding using electrogas welding through integrated information on motion control of the cooling injection unit 110. As described above, the present invention may be implemented through various means that are commonly used, including a display device 172 for implementing visual information or a printer 174 for outputting a result to a printing paper.

As described above, according to the present invention, an apparatus and a method for cooling the back surface of the welded part of the present invention can effectively solve the problem that the cooling rate of the welded part decreases during the high heat input welding of the electrogas welding method (EGW). Appropriate injection of liquid alcohol mixed with compressed air to the back side of the weld can improve the cooling characteristics of the weld, which can slow down the cooling rate.

As a result, it is possible to improve the quality of the welded product by solving the problem that the mechanical properties of the welding metal and the heat affected zone (HAZ) are degraded during the high heat input welding of the electrogas welding method. have.

In the above, the welded part backside cooling apparatus and method of the electrogas welding according to the preferred embodiment of the present invention were described.

It is to be understood that the above-described embodiments are illustrative in all aspects and should not be construed as limiting, the scope of the invention being indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

S: Base material B: Backing material
102: liquid alcohol storage unit 103: injection pump
104: compressed air storage 106: piping
107: valve 108: on / off switch
110: cooling jet part 111: jet nozzle part
112: injection nozzle pipe 113: nozzle valve
114: nozzle port 120: lifting and lowering portion
122: chamber 124: drive unit
140: temperature detection unit 150: control unit
152: data input unit 154: data operation unit
156: data processor 160: interface
172: display device 174: printer
180: integrated management server

Claims (23)

Cooling injection unit formed to prevent the cooling rate of the welding portion is reduced by injecting liquid alcohol mixed with compressed air on the back surface of the welding portion during high heat input welding;
A liquid alcohol storage unit connected to the cooling spray unit through a pipe and storing liquid alcohol to be supplied to the cooling spray unit; And
The compressed air storage unit is connected to the cooling injection unit and the liquid alcohol storage unit through a pipe, and stores compressed air to be mixed in the liquid alcohol supplied to the cooling injection unit; .
The method of claim 1,
An injection pump installed on a pipe between the liquid alcohol storage unit and the compressed air storage unit and configured to adjust a hydraulic pressure required to transfer the liquid alcohol mixed with the compressed air to the cooling spray unit; The welding part back surface cooling apparatus of the electrogas welding characterized by the above-mentioned.
The method of claim 1,
And a valve connected to a pipe between the liquid alcohol storage unit and the cooling spray unit, the valve being configured to control the opening and closing of the flow of liquid alcohol mixed with the compressed air to be delivered to the cooling spray unit. Cooling device back side of welding part of electrogas welding.
The method of claim 3, wherein
The valve,
Cooling device for the welding side of the electrogas welding, characterized in that the solenoid valve for controlling the opening and closing of the flow of liquid alcohol mixed with the compressed air flowing in the pipe receiving the electrical signal transmitted according to the user's command .
The method of claim 4, wherein
In the valve,
And an on / off switch electrically connected to the valve so as to receive a command for opening / closing the flow of liquid alcohol mixed with the compressed air from a user.
The method of claim 1,
The cooling jet unit,
The exit side is disposed to face the welded back surface, and is formed to spray the liquid alcohol mixed with the compressed air to the welded back surface, and the mouth side is connected to the liquid alcohol reservoir and the compressed air reservoir through a pipe. part; And
And an elevating trolley mounted on the inner side of the spray nozzle and configured to vertically move along the rear surface of the welded part.
The method according to claim 6,
On the inlet side of the injection nozzle unit,
The liquid alcohol storage unit and the compressed air storage unit is connected through a pipe, and a chamber (chamber) for temporarily storing the liquid alcohol mixed with the compressed air is provided, the chamber is formed in the lifting cart The welding part back surface cooling apparatus of the electrogas welding characterized by the above-mentioned.
The method of claim 7, wherein
The injection nozzle unit,
An injection nozzle tube connected to the chamber and the inlet side and branched into a plurality of branches in the width direction of the back surface of the welded part;
A nozzle valve for opening and closing a flow of liquid alcohol mixed with the compressed air to be injected through the injection nozzle tube; And
And a nozzle hole provided at the exit side of the injection nozzle tube and configured to spray liquid alcohol mixed with the compressed air to the back surface of the welding part.
The method of claim 8,
The nozzle valve,
Cooling device for the welding side of the electrogas welding, characterized in that the solenoid valve for controlling the opening and closing of the flow of liquid alcohol mixed with the compressed air flowing in the pipe receiving the electrical signal transmitted according to the user's command .
The method according to claim 6,
The elevating loan portion,
And a driving part provided to be in charge of the width direction position control of the injection nozzle part and the lifting control of the lifting bogie part.
The method of claim 10,
The driving unit,
Cooling device of the welding portion of the electro-gas welding, characterized in that the servo motor and the gear assembly is operated by receiving an electrical signal in response to a user's command.
Cooling injection unit formed to prevent the cooling rate of the welding portion is reduced by injecting liquid alcohol mixed with compressed air on the back surface of the welding portion during high heat input welding;
A liquid alcohol storage unit connected to the cooling spray unit through a pipe and storing liquid alcohol to be supplied to the cooling spray unit;
A compressed air storage unit connected to the cooling spray unit and the liquid alcohol storage unit through a pipe, and storing compressed air to be mixed with the liquid alcohol supplied to the cooling spray unit;
A temperature detector which is transferred in advance of the cooling sprayer to detect a temperature of the back surface of the welded part; And
A control unit for determining the degree of cooling rate drop on the back surface of the weld, based on the detection information of the temperature detector, and controls the injection position and strength of the liquid alcohol mixed with the compressed air to be finely sprayed onto the back of the weld through the cooling spray unit Cooling device back surface welding portion of the electrogas welding, including.
The method of claim 12,
The control unit,
A data input unit configured to receive a temperature of the weld back surface measured from the temperature detector;
A data calculation unit for calculating the injection position and strength of the liquid alcohol mixed with the compressed air to be injected onto the welding surface through the cooling spray unit by comparing the input welding surface temperature with the preset temperature reference value; And
And a data processor for processing motion control of the cooling jetting unit according to the calculated injection position and intensity.
The method of claim 13,
Integrated management server for receiving and storing the integrated information about the motion control of the cooling injection unit processed by the data processing unit via a wired or wireless communication interface, and transmits the requested information whenever there is a request from a remote user The welding part back surface apparatus of the electrogas welding characterized by including further.
The method of claim 13,
The control unit further includes an output unit for receiving the integrated information on the motion control of the cooling injection unit processed by the data processing unit via a wired or wireless communication interface, and outputs the information to a remote user, wherein the output unit is a display device or prints implemented as visual information. It is a printer which outputs to a paper, The welding part back surface apparatus of the electrogas welding characterized by the above-mentioned.
The method of claim 12,
An injection pump installed on a pipe between the liquid alcohol storage unit and the compressed air storage unit and configured to adjust a hydraulic pressure required to transfer the liquid alcohol mixed with the compressed air to the cooling spray unit; The welding part back surface cooling apparatus of the electrogas welding characterized by the above-mentioned.
The method of claim 12,
And a valve connected to a pipe between the liquid alcohol storage unit and the cooling spray unit, the valve being configured to control the opening and closing of the flow of liquid alcohol mixed with the compressed air to be delivered to the cooling spray unit. Cooling device back side of welding part of electrogas welding.
The method of claim 17,
The valve,
Cooling device for the welding side of the electrogas welding, characterized in that the solenoid valve for controlling the opening and closing of the flow of liquid alcohol mixed with the compressed air flowing in the pipe receiving the electrical signal transmitted according to the user's command .
The method of claim 12,
The cooling jet unit,
The exit side is disposed to face the welded back surface, and is formed to spray the liquid alcohol mixed with the compressed air to the welded back surface, and the mouth side is connected to the liquid alcohol reservoir and the compressed air reservoir through a pipe. part; And
And an elevating trolley mounted on the inner side of the spray nozzle and configured to vertically move along the rear surface of the welded part.
The method of claim 19,
On the inlet side of the injection nozzle unit,
The liquid alcohol storage unit and the compressed air storage unit is connected through a pipe, and a chamber (chamber) for temporarily storing the liquid alcohol mixed with the compressed air is provided, the chamber is formed in the lifting cart The welding part back surface cooling apparatus of the electrogas welding characterized by the above-mentioned.
The method of claim 20,
The injection nozzle unit,
An injection nozzle tube connected to the chamber and the inlet side and branched into a plurality of branches in the width direction of the back surface of the welded part;
A nozzle valve for opening and closing a flow of liquid alcohol mixed with the compressed air to be injected through the injection nozzle tube; And
And a nozzle hole provided at the exit side of the injection nozzle tube and configured to spray liquid alcohol mixed with the compressed air to the back surface of the welding part.
The method of claim 21,
The nozzle valve,
Cooling device for the welding side of the electrogas welding, characterized in that the solenoid valve for controlling the opening and closing of the flow of liquid alcohol mixed with the compressed air flowing in the pipe receiving the electrical signal transmitted according to the user's command .
The method of claim 19,
The elevating loan portion,
And a driving part provided to be in charge of the width direction position control of the injection nozzle part and the lifting control of the lifting bogie part.

Images