A butt-welding device and a method for butt welding workpieces, especially for double-upset resistance-pressure butt-welding of workpieces, particularly wires, strands and profiles, has first and second clamping members for receiving the ends of the workpieces that are to be joined. At least one clamping means can be moved between a starting position and a welding position. At least one deburring tool is provided for deburring the welded workpiece ends. In addition, at least one sensor is provided to determine the geometric dimensions of the workpieces that are to be joined, especially the diameter, the width or the height in the joining plane or substantially parallel thereto, wherein a control unit controls the movement of the clamping members and/or of the deburring tool as a function of the geometric dimension.

A butt-welding device and a method for butt welding workpieces, especially for double-upset resistance-pressure butt-welding of workpieces, particularly wires, strands and profiles, has first and second clamping members for receiving the ends of the workpieces that are to be joined. At least one clamping means can be moved between a starting position and a welding position. At least one deburring tool is provided for deburring the welded workpiece ends. In addition, at least one sensor is provided to determine the geometric dimensions of the workpieces that are to be joined, especially the diameter, the width or the height in the joining plane or substantially parallel thereto, wherein a control unit controls the movement of the clamping members and/or of the deburring tool as a function of the geometric dimension.

A scraper that can accurately scrape fusing shavings without the cutting edge slipping, comprises a flat blade-shaped blade provided on a front side of the scraper, a striking portion provided on a rear side, and a grip portion provided between the blade and the striking portion, wherein a slit extending in a length direction of the blade is formed on one surface of a plane along a width direction of the blade, the slit is opened at a cutting edge and has side walls and in the length direction. When the cutting edge of the blade is pressed against the welded material adhered to a workpiece by fusing or welding, the welded material is inserted into the slit and hits the side walls when the welded material is scraped from the workpiece, movement of the cutting edge in the width direction is restricted.

A scraper that can accurately scrape fusing shavings without the cutting edge slipping, comprises a flat blade-shaped blade provided on a front side of the scraper, a striking portion provided on a rear side, and a grip portion provided between the blade and the striking portion, wherein a slit extending in a length direction of the blade is formed on one surface of a plane along a width direction of the blade, the slit is opened at a cutting edge and has side walls and in the length direction. When the cutting edge of the blade is pressed against the welded material adhered to a workpiece by fusing or welding, the welded material is inserted into the slit and hits the side walls when the welded material is scraped from the workpiece, movement of the cutting edge in the width direction is restricted.

Disclosed are a welding slag clearing device, a welding machine head and a welding system. The welding slag clearing device includes: a mounting frame; a slag crushing mechanism comprising a slag crushing wheel and an adjusting assembly, the slag crushing wheel is connected to the adjusting assembly, the adjusting assembly is connected to the mounting frame, and the adjusting assembly is configured to adjust a longitudinal distance of the slag crushing wheel relative to the mounting frame; and a welding slag recovery mechanism comprising a hollow recovery pipe and a connecting piece used for connecting the recovery pipe with the mounting frame, the recovery pipe is correspondingly arranged right behind the slag crushing mechanism in a transverse direction.

Disclosed herein is an electrolytic brush assembly comprising a handle assembly; a shroud extending from the handle assembly, the shroud having an aperture at a distal end thereof; a brush connecting assembly for releasably connecting a brush to the handle assembly whereby the brush extends through the aperture of the shroud and a fluid delivery assembly. The handle assembly comprises an adjustment sub-assembly for selectively moving the brush connecting assembly and a brush connected thereto relative to the handle assembly and the aperture of the shroud. The fluid delivery assembly delivers electrolytic fluid to the proximity of the brush, optionally under closed loop control.

Disclosed herein is an electrolytic brush assembly comprising a handle assembly; a shroud extending from the handle assembly, the shroud having an aperture at a distal end thereof; a brush connecting assembly for releasably connecting a brush to the handle assembly whereby the brush extends through the aperture of the shroud and a fluid delivery assembly. The handle assembly comprises an adjustment sub-assembly for selectively moving the brush connecting assembly and a brush connected thereto relative to the handle assembly and the aperture of the shroud. The fluid delivery assembly delivers electrolytic fluid to the proximity of the brush, optionally under closed loop control.

A deburring tool for cutting burr generated when members are welded to each other by friction stir welding is provided. The deburring tool includes a tool center portion contacting a welding portion, and a blade portion formed on an outer circumference of the tool center portion to cut the burr. The tool center portion includes a protrusion protruding downward from a ridge line of the blade portion to control a burr cutting amount.

A deburring tool for cutting burr generated when members are welded to each other by friction stir welding is provided. The deburring tool includes a tool center portion contacting a welding portion, and a blade portion formed on an outer circumference of the tool center portion to cut the burr. The tool center portion includes a protrusion protruding downward from a ridge line of the blade portion to control a burr cutting amount.

There are provided an electric resistance welded steel pipe for producing a high strength hollow stabilizer excellent in fatigue resistance and a high strength hollow stabilizer. In an electric resistance welded steel pipe (5) for producing a hollow stabilizer, an internal weld bead cut portion (30) has a three-peak shape and a depth (H) of a trough portion (30a) of the three-peak shape is 0.3 mm or less and an angle (θ) formed by a central portion in the circumferential direction of the trough portion (30a) and the top of right and left peak portions (30b, 30c) located on both the right and left sides of the trough portion (30a) is 160° or more and less than 180°.