KR20000059556A - A apparatus of side beam for strip clading and method thereof - Google Patents

Abstract

PURPOSE: A side beam device for strip cladding and a work method thereof are provided to help a worker's work and to control a carriage with a control system installed on a fixed support. CONSTITUTION: A boom auxiliary support(8) is opened and a welding material(12) is inserted and set on the boom(5). After putting the welding material on a turning roller, the balance degree of the boom is regulated and fixed by regulating the height of the boom auxiliary support. Each part of a side beam device is checked and regulated by turning on a main power switch inside a control system(7). The travel speed and distance of a carriage(6) are decided and inputted in the control system according to a used strip and a welding speed. A welding variable is inputted in an operation system(15) of a welding head after confirming the setting of the strip. A welding start switch is turned on after confirming the setting of all work variables. Then, a fine regulation is performed after confirming a welding state while preventing the welding material from being pushed in a shaft direction with a thrust roller(4).

Description

Side beam device for strip cladding and its working method {A APPARATUS OF SIDE BEAM FOR STRIP CLADING AND METHOD THEREOF}

The present invention relates to a device for further increasing the efficiency of latent welding and electroslag welding applied for the production of pressure vessels for nuclear and petrochemical, in particular, the inner surface or the outer surface of a large thick plate container (pressure vessel) to a specific material The present invention relates to a side beam device and a method of working the same, so that when welding and cladding continuously, the molten pool is directly checked and the welding can be made precisely.

Nuclear and petrochemical pressure vessels are cladding process by electric arc welding using stainless steel or Inconel material to cover the inner surface of the container for the purpose of preventing corrosion of the inner surface of the container due to the fluid material entering and exiting. Required.

However, since the general cladding process using the welding rod in electric arc welding has low work efficiency and requires a long production period, in recent years, a method using a strip instead of a core wire is used to maximize the welding efficiency. The cladding manufacturing method of submerged arc welding (SWA) and electro slag welding (ESW) has been widely applied.

The latent welding and electroslag welding processes are generally attached to a manipulator device. However, a cantilever-type manipulator is difficult to directly observe the welding situation on the inner surface of the container. There was a problem in not trusting the final welding state.

Moreover, when the welding method is applied to the production of a large vessel of about 3000 mm or more in length, precise control of the boom for transporting the welding head back and forth by mounting the welding head is required. There was this.

The present invention has been made in order to solve the problems described above, one end of the boom for maintaining the uniformity and stability of the speed for the purpose of smooth cladding operation by welding the inside of the container by mounting a strip welding head It is fixed with a fixed support, and the other side is fixed with a hinge type detachable auxiliary support, and it can also be used in combination with the peripheral device of the turning roller that supports and rotates the container, that is, the fixed support, the boom auxiliary support, and the boom. The bed frame is made to be sturdy enough so that the work boom can be added to the boom to help the operator work smoothly, while the control panel installed on the fixed support controls the carriage for the front and rear conveyance of the welding head on the welding head and the boom. It was made.

1 is a side view of a side beam device according to the present invention;

2 shows a state of use of the device of a side beam according to the invention.

(Explanation of reference numerals)

1 ... Bed Frame, 2 ... Fixed Support,

3 ... boom support, 4 ... Thrust Roller,

5 ... Boom, 6 ... Carriage,

7 control panel, 8 welding head,

9 ... strip feed, 10 ... welded flux feed,

11 ... cable conveyor, 12 ..., welding (container),

13 ... work stand, 14 ... Turning Roller,

15 ... Driver.

Hereinafter, with reference to the drawings will be described in detail with respect to the side beam device for the strip cladding and its working method.

As shown in FIG. 1, the side beam apparatus according to the present invention basically includes a support including a fixed support 2, a boom auxiliary support 3, and a thrust roller 4 on a bed frame 1, and a boom. It consists of 5, the carriage 6, and the control panel 7. As shown in FIG.

The fixed support 2 for fixing one end of the boom 5 in the support portion is a steel structure having a strength and a structure that can sufficiently withstand the boom 5 of the cantilever shape, the boom auxiliary support 3 is It is a hinge type detachable structure which supports the other end of the boom 5, and the thrust roller 4 is fixed to one end of the upper end of the bed frame 1 according to the maximum container size.

The boom 5 is a linear structure capable of conveying the carriage 6 mounted with the strip welding head 8 back and forth, which is an essential condition for accurate welding and is able to withstand a load of 500 kg. And a pinion for driving the carriage 6 is assembled.

The carriage 6 is equipped with a welding head 8, a strip feeder 9, a welding flux feeder 10, and is made to run at constant speed. The carriage 6 is linearly moved by a digital input control method and is driven up, down, left, and right. The part is connected by rack and timing belt using AC servo motor.

The control panel 7 is a moving speed of the strip welding head 8, the movement of the carriage (6) and a power supply control device is selected so that the appropriate speed value selected by the operator is input numerically to enable accurate feed control of the welding head. The cable of the conveying part is protected by the cable conveyor 11.

Specific installation state of the side beam device consisting of these components is as follows.

A fixed support 2 for fixing one end of the high information boom 5 on one end of the bed frame 1 is installed to guide the front and rear running of the carriage 6 on which the strip cladding welding equipment is mounted. (5) is long and horizontally connected with the fixed support.

On the boom 5, a carriage 6 equipped with a welding head 8, a strip feeder 9, and a flux feeder 10 is installed so that the boom slowly rotates while the container 12 rotates. It is driven, and the rack and pinion (Rack and Pinion) gear that can adjust the vertical height of the welding head is mounted.

In addition, at the other end of the boom 5, the horizontal position adjustment of the boom and the boom auxiliary support 3 for supporting the boom are detachably installed in a hinge type, and the side of the boom 5 efficiently performs the operation of the carriage 6 operation. A detachable worker work stand 13 is attached for this purpose.

Further, on one side of the bed frame 1, a thrust roller 4 is mounted at a position below the boom to prevent the container (rotation) from being pushed forward in the axial direction during the welding operation. The cable conveyor 11 for guiding a power cable or the like connected to the welding head 8 is installed.

The control panel 7 installed on the fixed support 2 controls the opening and closing of the power supply of the side beam device, and controls the operation of the carriage 6 to finely adjust the driving up and down, as well as an alarm lamp (not shown). Inform the driver of abnormal driving conditions.

A turning roller 14 having a power generating mechanism as a device for directly supporting and rotating the pressure vessel 12, which is a welding object, is separately installed between the bed frame 1 and the boom 5.

The following is a work method for cladding the inner surface of a large container by welding using the side beam apparatus as described above, and specifies the installation process of the initial container and the adjustment guide of the control panel.

1) Open the boom auxiliary support (3), insert the welding material 12 in the proper position on the boom (5), and then set the turning roller (14), then adjust the height of the boom auxiliary support to the boom (5) Adjust and fix the balance.

2) Turn on the main power switch inside the control panel (7) and check and adjust each part of the side beam unit. Check and adjust items are as follows.

-Control panel: check power supply, various switches, instrument

-Limit switch: Check the limit switch to prevent overload and damage

-Carriage: Check the speed, direction of travel and the operation switch

-Boom level: keep parallel to the axis of the weldment and adjust as horizontal as possible

3) Determine the running speed and distance of the carriage 6 according to the strip and the welding speed (rotational speed of the weld) to be used and input it to the control panel 7.

4) Check the strip settings and enter the welding parameters into the operator panel 15 of the welding head.

5) After confirming the setting of all working variables, turn on the welding start switch.

6) Fine adjustment after confirming the welding state while preventing the welded material 12 from being pushed in the axial direction by the thrust roller 4.

By the side beam device according to the present invention made of the above object and configuration as described above, the welding worker directly monitors the molten pool and operates the welding head, thereby enabling the production of high-quality welded parts. Being able to manufacture efficiently improves workability with higher efficiency than conventional manufacturing techniques.

In addition, the fabrication method using the submerged welding and electroslag welding head using the strip to the side beam apparatus according to the present invention enables continuous welding of the inner surface of the container and the outer surface of the roll cladding, and stable operation due to the constant speed driving of the carriage. Can be derived. Specific main effects are as follows.

1) Continuous welding inside the large container and producing high quality welded parts

2) High efficiency effect of inner strip cladding welding technology

3) Reduction of equipment purchase cost and accumulation of manufacturing technology through localization

Claims (2)

A fixed support 2 is provided at one end on the bed frame 1 so that the boom 5 is long and horizontally connected to the fixed support; At the other end of the boom 5, the boom auxiliary support 3 is detachably installed in a hinge type; A carriage (6) equipped with a strip cladding welding equipment is installed on the boom (5) to guide the front and rear travel of the carriage; A cable conveyor for guiding a power cable connected to the welding head 8 while a removable work stand 13 is attached to the side of the boom 5 for efficient operation of the carriage 6. 11) is installed; A thrust roller (4) is mounted on one side of the bed frame (1) at a position below the boom; The fixed support (2) is a side beam device for strip cladding, characterized in that the control panel (7) for controlling the operation of the carriage (6) is installed while controlling the opening and closing of the power supply of the side beam device. Working method using the side beam device for strip cladding, characterized in that the cladding operation using the side beam device for strip cladding in the following steps 1) Open the boom auxiliary support (3), insert the welding material 12 in the proper position on the boom (5), and then set the turning roller (14), then adjust the height of the boom auxiliary support to the boom (5) Adjusting and fixing the balance of the; 2) turning on the main power switch inside the control panel 7 and inspecting and adjusting each part of the side beam apparatus, and checking and adjusting the following items; -Control panel: check power supply, various switches, instrument -Limit switch: Check the limit switch to prevent overload and damage -Carriage: Check the speed, direction of travel and the operation switch -Boom level: keep parallel to the axis of the weldment and adjust as horizontal as possible 3) determining the traveling speed and distance of the carriage 6 according to the strip and the welding speed (rotational speed of the weld) to be used and inputting it to the control panel 7; 4) checking the strip setting and inputting the welding parameters into the operating panel 15 of the welding head; 5) turning on the welding start switch after confirming the setting of all working variables; 6) fine adjustment after confirming the welding state while preventing the welded material 12 from being pushed in the axial direction by the thrust roller 4;