Abstract: One embodiment of the present invention provides a welding wire accommodation-container cover comprising: a blocking part which has a shape corresponding to a transverse cross section of a container body part, and which covers the opening of the container body part; side-forming parts which are connected to the blocking part, and which are bent from the blocking part so as to be fitted to encompass the outer side surface of the upper portion of the container body part; side-fixing parts which are alternately provided with the side-forming parts along the side of the blocking part, and which fix neighboring side-forming parts; and a cut part which is formed at the blocking part, and which can be cut so that a welding wire wound around the container body part can be withdrawn to the outside.

Abstract: An embodiment of the present invention provides a storage container for welding wire, the storage container comprising: an outer shell which has an outer bottom support portion formed at the bottom thereof and within which a wire storage portion for storing coiled welding wire is formed; a bottom part which is seated on and coupled to the outer bottom support portion; an inner shell which comes into close contact with the inner surface of the outer shell and has an inner bottom support portion formed at the bottom thereof and seated on the bottom part; and a cover which is formed to correspond to the shape of the outer shell and closes the top of the outer shell.

Abstract: An embodiment of the present invention provides a retainer ring for welding wire, the retainer ring comprising: a pressure plate which is disposed on a welding wire stack wound and stored in a receiving container so as to press the welding wire stack, and has an opening formed at the center thereof; and a plurality of guide wings which are provided at the outer circumference of the pressure plate to come into contact with the inner wall of the receiving container and each comprise a flexible body that can be changed in shape.

Abstract: Provided is a storage unit for welding wire including an outer case in which an outer bottom supporting part is formed in a lower end thereof and a wire accommodation part configured to store a wound welding wire is formed therein, a bottom part seated on and coupled to the outer bottom supporting part, and an inner case configured to come into close contact with an inner surface of the outer case and having an inner bottom supporting part seated on the bottom part, formed in a lower portion thereof, wherein the outer case includes a strength reinforcement part and a shock absorption part formed at an inner side of the strength reinforcement part to absorb a shock from the outside.

Abstract: Provided is a strap guide including: a first module including a first base, a strap boss formed on the first base and including a first slot through which a strap passes, and at least one protrusion accommodation part located at an outer circumferential portion of the strap boss and including a bore; and a second module having a second base, a second slot formed in the second base, and at least one coupling protrusion located at an outer circumferential portion of the second slot and configured to form a pair with the protrusion accommodation part, wherein the first module and the second module are coupled to form an opening having a single closed surface.

Abstract: A flux cored wire for duplex stainless steel and a manufacturing method thereof are provided. The flux cored wire can include a sheath and a flux filled into the sheath. The flux cored wire comprises about 24.0-30.0 wt % Cr, about 7.0-10.5 wt % Ni, about 2.0-4.0 wt % Mo, about 0.10-2.50 wt % Cu, about 0.40-1.00 wt % Si, about 1.5-3.0 wt % Mn, about 0.10-0.30 wt % N compound (converted value of N), and the remainder including Fe and inevitable impurities on the basis of the total weight of the wire. The flux comprises about 6.50-12.00 wt % of TiO2+SiO2+ZrO2+Al2O3, about 0.10-0.50 wt % of Li2O+K2O+Na2O, about 0.10-2.00 wt % of the other oxides, and about 0.10-0.50 wt % of metal fluoride (converted value of F) on the basis of the total weight of the wire. The flux can be filled into the sheath at a ratio of about 26-35%.

Abstract: Disclosed is a solid wire for gas shielded arc welding treated with a surface treatment soil which includes metal salts containing Sodium (Na), potassium (K), calcium (Ca) and zinc (Zn), and a non-metal phosphorus (P), and a hydrocarbon compound containing at least two functional groups selected from the group that consists of ester, carboxylic acid and alkane groups. According to the present invention, the solid wire treated with a specific liquid surface treatment agent exhibited superior rust resistance and wire feedability to those of conventional solid wires.

Abstract: Disclosed herein is a flux cored wire for gas shielded arc welding which comprises a seam section for improving the rectilinear property of the wire, thereby preventing the occurrence of bead meandering. The flux cored wire for gas shield arc welding is manufactured by forming a metal sheath, packing the inside of the metal sheath with a flux, followed by forming into a metal pipe shape and wire drawing and satisfies Relationship (1) below: 1.4?(Rrcts/Ructs)?4.0??(1) wherein Rrcts represents the range of tensile strength of real cross section (real tensile strength range in a state where the flux is packed), and Ructs represents the range of tensile strength of unpacked cross section (real tensile strength range in a state where the flux is unpacked).

Abstract: Disclosed herein is a copper-free wire for gas-shielded arc welding. The copper-free wire for gas-shielded arc welding comprises a flat worked surface, and depressions circumferentially formed in a negative direction (towards the center of the wire) to the said worked surface reference. The ratio (dr/di) of an actual length (dr) of a circular arc to an apparent length (di) of a circular arc is in the range of 1.015˜1.515. An amount of lubricant remaining on the wire surface is 0.50 g/W. kg or less. The wire has 0.03˜0.70 g/W. kg of a coating agent on the wire surface. The coating agent comprises at least one selected from the group consisting of liquid animal oil, vegetable oil, mineral oil, mixed oil, and synthetic oil. The wire is brought into stable contact with a contact tip during welding, which results in excellent arc stability and feedability, while lowering a spatter quantity.

Abstract: A non-copper-plated solid wire for CO2 gas shielded arc welding. The non-copper-plated solid wire for CO2 gas shielded arc welding with excellent feedability ensures a reduced amount of generated spatters when welded at a relatively low current area, resulting from controlling the ten point average roughness (Rz) of the wire surface to 0.10 to 9.00 ?m and the Vickers micro-hardness of the wire surface (Hv(1g)) to 125 to 310. Therefore, the welding operation can be carried out with a high efficiency to produce a weld of good quality.

Abstract: Disclosed herein is a surface treatment oil for treating the surface of a welding wire. The surface treatment oil comprises at least one alkali metal compound and/or an alkaline earth metal compound, a Zn compound, and a hydrocarbon compound wherein the hydrocarbon compound contains at least two functional groups selected from the group consisting of ester, carboxylic acid, alkane and sulfonic acid groups. Further disclosed is a welding wire surface treated with the surface treatment oil. The surface treatment oil can provide good rust resistance, wear resistance, arc stability and wire feedability to a welding wire when being applied to the surface of the welding wire.

Abstract: Disclosed is a solid wire for arc welding, including: a flat portion of a wire surface with no copper plating, wherein micro Vickers hardness (Hv) of the flat portion is in the range of 115 to 310 and arithmetical average roughness (Ra) of the flat portion is in the range of 0.01 to 0.30·m. The solid wire is based on a new concept different from a conventional solid wire. The solid wire for arc welding has excellent feedability without copper plating, thereby improving weld workability. Consumption of energy during manufacture of the solid wire can be reduced because the solid wire is manufactured without copper plating, and a weld work environment can be improved because copper fumes are not generated.

Abstract: Disclosed herein is a flux cored wire for gas shielded arc welding which comprises a seam section for improving the rectilinear property of the wire, thereby preventing the occurrence of bead meandering. The flux cored wire for gas shield arc welding is manufactured by forming a metal sheath, packing the inside of the metal sheath with a flux, followed by forming into a metal pipe shape and wire drawing and satisfies Relationship (1) below: 1.4?(Rrcts/Ructs)?4.0??(1) wherein Rrcts represents the range of tensile strength of real cross section (real tensile strength range in a state where the flux is packed), and Ructs represents the range of tensile strength of unpacked cross section (real tensile strength range in a state where the flux is unpacked).

Abstract: Disclosed is a flux cored wire for gas shielded arc welding, which is capable of offering excellent workability and providing a weld metal with an improved impact value at low temperature. The flux cored wire for gas shielded arc welding is characterized in that a titania-based flux composition is filled into a sheath for mild steels of low-carbon steels, and the flux composition contains 4.0 to 8.0% TiO2, 1.0 to 3.0% Mn, 0.1 to 1.0% Si, 0.002 to 0.02% B, 0.2 to 0.45% Mg and 0.15 to 0.3% Al, by weight relative to the total weight of the wire.

Abstract: Disclosed is a wire for arc welding of high feedability having a hardness deviation of less than 18 between a central portion and a surface of a cross section of the wire, and a hardness deviation of less than 15 between each interval of 200 mm in a longitudinal direction when measured by an Hv1 hardness tester. The hardness deviation of the wire is adjustable through control of the area, in which the wire is in contact with dies. The present invention is characterized by adjusting the hardness deviation of the wire by adjusting the contact area ratio defined by the following formula.

Abstract: The invention an arc welding solid wire whose surface comprises copper plated film, wherein the elastic limit ratio (elastic limit/tensile strength) of the wire finally produced is controlled in the range between 50 and 88% by installing three to eight elastic limit ratio control vertical rollers and three to eight elastic limit ratio control transverse rollers which have a ratio D/d equal to 40 to 60, following coil control vertical and transverse rollers after final drawing.

Abstract: Disclosed is a basic flux cored wire having a mild steel or an alloy steel sheath filled with flux, characterized in that the flux essentially consists of, with respect to the total weight of the wire: 0.3 to 3.0% Ti and Ti oxide (TiO2-converted value); 1.0 to 2.5% Si and Si oxide (SiO2-converted value); 0.1 to 1.5% Mg and Mg oxide (MgO-converted value); 1.5 to 4.0% Mn and Mn oxide (MnO-converted value); 0.2 to 1.5% Al and Al oxide (Al2O3-converted value); 0.1 to 1.0% Zr and Zr oxide (ZrO2-converted value); 0.2 to 3.5% CaF2; and 0.01 to 0.5% K2O, with the proviso that the components satisfy the basicity of 0.5 to 4.5 in the basicity equation (1) defined as B=(CaF2+MgO+MnO+K2O)/(TiO2+SiO2+Al2O3+ZrO2). The basic flux cored wire of the present invention is excellent in crack resistance and low temperature toughness, and exhibits excellent welding workability in all welding positions, ensuring an improvement in the efficiency of welding work.

Abstract: Disclosed is a solid wire for arc welding, including: a flat portion of a wire surface with no copper plating, wherein micro Vickers hardness (Hv) of the flat portion is in the range of 115 to 310 and arithmetical average roughness (Ra) of the flat portion is in the range of 0.01 to 0.30·m. The solid wire is based on a new concept different from a conventional solid wire. The solid wire for arc welding has excellent feedability without copper plating, thereby improving weld workability. Consumption of energy during manufacture of the solid wire can be reduced because the solid wire is manufactured without copper plating, and a weld work environment can be improved because copper fumes are not generated.

Abstract: A copper-free wire having worked faces meaning faces drawn with dies and unworked faces continued in the circumferential direction on a wire surface, the copper-free wire has LD/LT ranging from 0.51 to 0.84 and LY ranging from 10 to 40 &mgr;m when measurement lines are drawn at every 5 &mgr;m in a width direction of a measurement area (10,000 &mgr;m2=100 &mgr;m×100 &mgr;m) on the wire surface about 4 wire faces, in which each of the measurement straight lines having a length in the circumferential direction includes at least two worked faces and unworked faces, respectively, in the measurement area, and its starting point and termination point which are all positioned on contact points of the worked faces and the unworked faces.

Abstract: Disclosed is a basic flux cored wire having a mild steel or an alloy steel sheath filled with flux, characterized in that the flux essentially consists of, with respect to the total weight of the wire: 0.3 to 3.0% Ti and Ti oxide (TiO2-converted value); 1.0 to 2.5% Si and Si oxide (SiO2-converted value); 0.1 to 1.5% Mg and Mg oxide (MgO-converted value); 1.5 to 4.0% Mn and Mn oxide (MnO-converted value); 0.2 to 1.5% Al and Al oxide (Al2O3-converted value); 0.1 to 1.0% Zr and Zr oxide (ZrO2-converted value); 0.2 to 3.5% CaF2; and 0.01 to 0.5% K2O, with the proviso that the components satisfy the basicity of 0.5 to 4.5 in the basicity equation (1) defined as B=(CaF2+MgO+MnO+K2O)/(TiO2+SiO2+Al2O3+ZrO2). The basic flux cored wire of the present invention is excellent in crack resistance and low temperature toughness, and exhibits excellent welding workability in all welding positions, ensuring an improvement in the efficiency of welding work.