KR100348802B1 - The method or CO2 one pool welding machine for one side butt welding - Google Patents

Abstract

The present invention is applied to the butt welding of relatively close plate (thickness 6mm ~ 16mm) in the construction of shipbuilding and steel structure, while the one-sided circular CO ₂ welding device to be welded by one welding to increase the productivity And a method, comprising: a torch horizontal adjustment slide and a high speed sliding arc for forming wheels in front and rear of a truck forming a body, and forming a seating portion at an upper portion of the truck, and for adjusting a horizontal level of the high speed sliding arc torch in the seating portion; A torch height adjustment slide is formed to adjust the height of the torch. A torch height adjustment slide forms a straight weaving slide installed horizontally in front, and a weaving motor is formed on the side of the straight weaving slide, and a bogie is provided with a seating part. Weld adjacent to install a vertical support and the welding wire wound inside the vertical support A wire spool is formed, and a high-speed sliding arc torch is formed on the straight weaving slide, and a welding wire supply pipe is connected to a welding wire for welding a welding member on one side of the high-speed sliding arc torch, and a high-speed sliding arc torch is formed on the bogie. A light shielding film is formed on one side to prevent spatters from splashing out when welding, and a weld control box is formed on the trolley to adjust welding conditions to a corresponding side on which a seating part is installed.

Description

Single-sided circular CO2 butt welding machine and method {The method or CO2 one pool welding machine for one side butt welding}

The present invention relates to a CO ₂ welding apparatus, and in particular, in the construction of shipbuilding and steel structures, the welding construction can be performed by one welding to increase productivity while applying to the butt welding of a relatively close plate (thickness 6mm to 16mm). The present invention relates to a single-sided circular CO ₂ welding apparatus and method.

In general, assembling the upper deck of the block during the shipbuilding process consists of welding the plate to the plate. In this welding, the mooring shape is usually "V" because the one-side welding construction is inevitable because the giant block cannot be flipped. In order to form a good backside bead, the welding is performed at regular intervals between the welding member and the welding member. After this preparation process, the backside bead is made one to three times by first layer welding regardless of thickness.

This method is to prevent melt, which is a phenomenon in which molten metal passes through the back side of the member in the state of uncooled during welding by high current during submerged arc welding.

Other construction methods have introduced the FGB welding method, which uses a SAW welding method to attach the backing material to the back of the member without gaps, and then fills the metal filling material inside the mooring line and welds it. In case of welding, cracking by solidification and shrinkage during cooling occurs at the end of welding member as well as deformation problem of welding member. In particular, the SAW welding device is complicated and heavy, uncomfortable, and there is a problem in that the amount of meat of the operator can determine the welding quality because the arc is not visible because the welding to the mooring portion in the mooring.

In addition, due to the use of high current coagulation crack due to thermal expansion is necessarily generated at the end of the weld portion, gouging weld defects, and corrective work by accommodating welding is inconvenient in use.

In addition, the conventional manual CO ₂ welding method is simple, but there is a problem of lowering the productivity because the welding must be performed several times in multiple layers at low current when performing the welding.

In order to solve the above-mentioned problems, the present invention uses a high-speed sliding arc torch that moves the welding wire at high speed inside the mooring line to secure good backside beads in single-sided welding of thin plates, and thus, it is possible to obtain good backside beads regardless of thickness. A straight weaving slide can be obtained and a welding amount can be secured in order to complete the welding work in one welding by joining the butt joints of 6mm to 16mm thickness. It is an object of the present invention to provide a single-sided circular CO ₂ butt welding device and method for connecting the welding wire to move forward and left and right evenly.

In order to achieve the above object, the present invention, in the welding apparatus for welding the welding member manually and automatically after placing the backing material on the back of the V-cutting surface of the two welding members facing each other and loading the metal filler on the upper surface The wheels are formed at the front and rear of the bogie forming the body, and the seating portion is formed at the upper portion of the bogie, and the torch horizontal adjustment slide and the height of the high-speed sliding arc torch are adjusted at the seating portion. A torch height adjustment slide is formed, and the torch height adjustment slide forms a linear weaving slide installed horizontally in front and a weaving motor is formed on the side of the linear weaving slide. Install the support and form the welding wire spool, which is wound around the welding wire inside the vertical support, In the linear weaving slide, a high-speed sliding arc torch is formed at the front side, and a welding wire supply pipe is connected to a welding wire for welding a welding member on one side of the high-speed sliding arc torch. A light shielding film is formed to prevent spatters, etc. splashing out at the time, and the trolley is formed with a welding control box for adjusting welding conditions to a corresponding side on which a seating part is installed.

Further, in the welding method in which the mooring shape of each welding member divided into blocks during the construction of the ship is formed in a "V" shape to perform single side welding, the welding member in which the mooring surfaces are formed in a "V" shape facing each other. 32 is partially welded so that the gap is 0 to form a temporary attachment state, the welding member 32 is formed with a ceramic backing material 64 on the back surface to weld the metal filler 68 on the upper surface. After filling by 1/3 to 2/3 of the member 32, the high-speed sliding arc torch on the linear weaving slide 44 provided with the weaving motor 46 on the side for forward and backward sliding in the welding progress direction. Fastening arc 70 to the "V" -type mooring surface of the welding member by fastening the torch horizontal adjustment slide 40 to engage the 48 and to match the welding line during the welding operation. Uses low current by generating it evenly in front, rear, left and right at high speed While the welding so as to obtain an appropriate amount of deposited metal.

1 is a view showing a one-sided circular CO ₂ welding apparatus of the present invention.

Figure 2 is a schematic diagram of a high-speed sliding arc by welding of the present invention.

3 shows a one-sided welding process and weld shape of the present invention.

<Brief description of symbols for main parts of the drawings>

30: single-sided round CO ₂ welding device 32: welding member

34: balance 36: wheels

38: seating portion 40: torch leveling slide

42: torch height adjustment slide 44: straight weaving slide

46: weaving motor 48: high-speed sliding arc torch

50: vertical support 52: welding wire

54: welded wire supply pipe 56: welded wire spool

58: drive motor 60: welding control box

62: light shielding film 64: ceramic cladding material

66: root gap 68: metal filler

70: high-speed sliding arc 72: surface bead

74: back side bead

Hereinafter, the configuration and operation of the present invention with reference to the accompanying drawings.

1 is a view showing a single-sided circular CO ₂ welding device of the present invention, the one-sided circular welding device 30 is installed on the upper surface of the welding member 32 installed in the welding place, the single-sided circular welding device 30 is independent In particular, the one-sided round welding device 30 is provided with a wheel 36 on the front and rear of the trolley 34 constituting the body, and the trolley 34 has a plurality of members on the upper and side surfaces thereof. Is installed.

In the trolley 34 of the one-sided circular welding device 30, a seating portion 38 is formed on the right side of the upper portion, and a torch horizontal adjustment slide 40 is formed on the seating portion 38, and the torch Leveling slide (40) forms a torch height adjusting slide (42) thereon. The torch horizontal adjustment slide 40 and the torch height adjustment slide 42 adjust the horizontal and vertical of the high-speed sliding arc torch 48.

The torch height adjustment slide 42 forms a linear weaving slide 44 that is horizontally coupled forward, the linear weaving slide 44 has a weaving motor 46 on the side, and a high-speed sliding arc torch 48 in front ).

On the right side on which the seating portion 38 of the trolley 34 is installed, two vertical supports 50 are formed, and on the vertical support 50, a welding wire spool 56 wound around the welding wire 52. ). The welding wire 52 wound around the welding wire spool 56 is continuously supplied to the high-speed sliding arc torch 48 through the welding wire feed pipe 54. The welding wire spool 56 is coupled to the welding power cable, the protective gas and the cooling water line, and connects the welding power cable, the protective gas and the cooling water line of the welding wire pool 56 to the high-speed sliding arc torch 48.

In addition, the rear of the mounting portion 38 is installed (expressing the position shown in the figure) is installed a drive motor 58 to drive the wheel 36 installed on the side of the cart (34).

In addition, the trolley 34 is provided with a welding control box 60 to adjust the welding conditions on the left side where the drive motor 58 is installed.

On the side surface of which the high speed sliding arc torch 48 is installed on the trolley 34, a light shielding film 62 is provided to block the arc generated during welding.

2 is a schematic diagram of a high-speed sliding arc according to the present invention, in which a single-sided circular welding device 30 is installed to face two welding members 32 to each other and installed on an upper surface of a cross section in which a V groove is formed to perform welding work. It shows the state to enforce.

The one-sided circular welding device 30 is provided with a ceramic cladding member 64 in order to facilitate the welding operation at the rear of the V-groove in the form of two welding members facing each other, the ceramic cladding member 64 is the inner side in the center portion. After forming the groove-type root gap 66 is bent, the metal filler 68 is loaded on the upper surface of the root gap 66, and then the high-speed sliding arc torch 48 of the one-sided circular welding device 30 is used. Thus, the high-speed sliding arc 70 is raised on the upper surface of the metal filler 68 to form the surface beads 72. The one-sided round pool welding device 30 is completed by the high-speed sliding arc 70 only once.

3 is a view showing a one-side welding process and a welding shape of the present invention, and shows a state in which two welding members 32 are welded using the single-sided circular welding device 30.

On the V-cutting surfaces of the two welding members 32, a surface bead 72 and a back bead 74 having a constant welding cross section are formed.

As can be seen from above, it is very important to experimentally derive welding conditions that can produce good molten metal, good surface beads and back beads by one pool welding thin plates having a thickness of 6 mm to 16 mm.

The circular single-sided welding condition is described by thickness as follows.

Member thickness (mm) Weld Wire Diameter (mm) High speed arc number / width (Hz / mm) Front and rear sliding frequency / width (Hz / mm) Welding Current (AMP) Welding voltage (V) Welding speed (cm / min) Improvement angle (。) 6 1.6 30/4 1/8 370 35 36 50 ~ 60。 8 1.6 30/4 1/8 390 35 35 50 ~ 60。 11 1.6 30/4 1/8 430 36 23 50 ~ 60。 16 1.6 30/4 1/8 440 36 22 50。

In the welding method using the single-sided circular welding device 30, as shown in FIG. 2, the gap lined to the "V" shape of the welding member 32 so that the gap is "0" and partially inside the lined area. The welding member 32 is temporarily attached, and the welding member 32 is formed with a ceramic overlay material 64 composed of a ceramic material and an adhesive terry for attaching to a steel plate to form a backside bead 74 and the ceramic overlay material. In (64), when the metal filler 68 formed of metal granules or iron in the upper portion of the upper portion is filled by 1/3 to 1/2 of the thickness of the welding member plate, the welding preparation work is completed.

When the welding preparation work is completed, by adjusting the welding control box 60 of the one-sided round pool welding device 30 to adjust the welding current, welding voltage, welding speed, the height of the water and the number of straight water and then the high-speed sliding arc torch ( When driving 48) to slide 20 to 30 times / second and then performing a welding operation, the high speed sliding arc 70 is generated at the mooring plane while the cart 34 travels.

In FIG. 2, the welding progress is well illustrated. As shown in FIG. 2, when the welding operation is started, the linear weaving slide 44 is slow-moved in the welding progress direction at a rate of 1 to 2 times / sec. As the welding wire 52 is welded to the welded portion by the high-speed arc once more, the weld metal is increased to fill up to the height of the welding member 32 or more, thereby forming the surface bead 72.

3 shows the structure of the welded part after the welding operation is completed, when welding by the welding method using the one-sided circular welding device 30 is the back surface by the high-speed sliding arc 70 generated from the high-speed sliding arc torch 48 At the same time as the beads 74 are formed, the surface beads 72 can be formed at once by arc sliding in the welding progress direction.

Referring to the effects of the configuration and operation of the present invention described above are as follows.

One side wonpul welding apparatus according to the present invention is only possible on one side welding in a single operation and, in particular CO ₂ one-side welding to make a move evenly inside the welding arc by a straight weaving slides and high-speed sliding arc torch field lines, even if the sheet metal Since single side welding can be performed, no preparation work for SAW welding is required, and surface beads can be formed at one time, enabling high efficiency welding to increase productivity.

In addition, when performing a welding operation using the one-sided round pool welding apparatus of the present invention, since the arc can be monitored, welding conditions can be easily adjusted, so that the operator does not need to have a large amount of meat.

In addition, the installation method is very convenient because the installation method makes the gap "0" without the need to maintain a constant gap between the welding member and the member in order to form a good backside bead and prevent the melting by the latent welding construction. Can be obtained.

In addition, since the single-sided round welding device of the present invention is lighter than the SAW welding device, it has an excellent effect in a short welding section, and in particular, the single-sided round welding device can generate a good welding bead without using a high current.

In addition, the single-sided circular welding device of the present invention uses high-speed sliding arc torch to perform high-speed sliding of the arc to the left and right while performing welding while moving forward and backward in the welding direction, when welding by the same welding method. By using a lower current, an appropriate amount of deposited metal can be obtained.

Claims (3)

In the welding apparatus for welding the welding member manually and automatically after attaching the backing material on the back of the V-cutting surface of the two welding members facing each other and the metal filling material on the upper surface of the two cutting members, The wheel 36 is formed at the rear, and the upper portion of the trolley 34 has a seating portion 38 formed thereon, and the torch horizontal adjusting slide 40 and a high speed adjusting the level of the high-speed sliding arc torch at the seating portion 38. A torch height adjusting slide 42 is formed to adjust the height of the sliding arc torch, and the torch height adjusting slide 42 is formed with a straight weaving slide 44 installed to be horizontally in front of the straight weaving slide 44. A weaving motor 46 is formed on the side surface, and the support 34 is provided with a vertical support 50 adjacent to the mounting portion 38, and a welding wire 52 is provided inside the vertical support 50. The welding wire spool 56 In the linear weaving slide 44, a high-speed sliding arc torch 48 is formed in front and a welding wire 52 for welding a welding member on one side of the high-speed sliding arc torch 48 is a welding wire supply pipe 54 And a light shielding film 62 for preventing spatter from splashing outward when welding is formed on the side surface on which the high speed sliding arc torch 48 is formed. 38. A one-sided round CO ₂ butt welder 30 that forms a weld control box 60 that adjusts the weld conditions to the corresponding side in which 38 is installed. In the welding method of performing one side welding by forming the mooring shape of each welding member divided into blocks at the time of drying of the ship in the form of "V", the welding member 32 having the mooring surface in the form of "V" facing each other. ) Is temporarily welded so that the gap is 0 to form a temporary attachment state, and the ceramic member 64 is formed on the rear surface of the welding member 32 to form a metal filler 68 on the upper surface thereof. After filling 1/3 to 2/3 of 32), the high-speed sliding arc torch (48) is provided on the linear weaving slide 44 having the weaving motor 46 mounted on the side to allow forward and backward sliding in the welding progress direction. ) And fastening the torch horizontal adjustment slide 40 so as to coincide with the weld line during the welding operation. If you use low current by generating it evenly before, after, left and right One side wonpul CO ₂ butt welding method of welding so as to obtain an appropriate amount of deposited metal. 3. The method of claim 2, wherein one surface wonpul welding device 30 is one-sided butt welding wonpul CO ₂ characterized in that at a time of welding a thin plate (having a thickness of 6 ~ 16 mm) by welding conditions are listed in the following table. Member thickness (mm) Weld Wire Diameter (mm) High speed arc number / width (Hz / mm) Front and rear sliding frequency / width (Hz / mm) Welding Current (AMP) Welding voltage (V) Welding speed (cm / min) Improvement angle (。) 6 1.6 30/4 1/8 370 35 36 50 ~ 60。 8 1.6 30/4 1/8 390 35 35 50 ~ 60。 11 1.6 30/4 1/8 430 36 23 50 ~ 60。 16 1.6 30/4 1/8 440 36 22 50。