摘要:
A double-sided tribrid welding technique and apparatus for root pass welding of narrow groove welds is desribed. The welding technique utilizes three welding devices (40, 46, 48), one (40) positioned on the backside (50) of the weld joint opposite the narrow groove, while the other welding devices (46, 48) are positioned on the narrow groove side (42) of the weld. The welding apparatus (40) on the backside (50) of the weld joint may strike an arc on the backside (50) of the weld joint, one of the welding apparatus (46) on the narrow groove side (42) of the weld may strike an arc within the narrow groove weld joint, while the remaining welding apparatus (48) is a laser that can help establish a stable keyhole as a common pool of molten metal at the root without burning through the root. Once the arcs are struck substantially simultaneously and the laser is energized, the three welding heads move simultaneously, the arc welders (40, 46) assisting in maintaining pre-heat temperature, while minimizing distortion and cracking. Adjusting arc weld parameters can provide deformation on completion of the root pass so as to compensate for distortion due to metal shrinkage in subsequent passes.
摘要:
A method and test block for controlling weld penetration depth in a work piece are disclosed. The test block simulates a work piece relative to a welding process of the work piece. The test block includes a test welding path. The test welding path replicates a production welding path on a weld surface of the work piece. The test block includes a melt-thru surface that underlies the test welding path. The melt-thru surface is spaced apart from the test welding path by a spacing that decreases along a length of the test welding path. The spacing varies from more than a standard weld penetration depth to less than the standard weld penetration depth.
摘要:
A welded structure wherein steel plates having at least partial regions with a brittle crack arrest property Kca of 4000N/mm 1.5 or more are butt welded together so as to form a steel plate welded joint, wherein at least one location of the steel plate welded joint is provided with a crack control part which diverts a brittle crack which has occurred at the steel plate welded joint to a steel plate base metal side, outer edges of an insert member which forms the crack control part are formed to extend in the longitudinal direction of the steel plate welded joint from a weld metal zone of the steel plate welded joint while slanted by 15° to 50° with respect to the longitudinal direction of the steel plate welded joint, and a horizontal width direction end of the insert member is made to face a region of the steel plate where the Kca is 4000N/mm 1.5 or more, whereby even if a brittle crack occurs in the welded joint, the brittle crack can be kept from propagating through the weld joint and base metal.
摘要翻译:一种焊接结构,其中具有至少具有4000N / mm1.5以下的脆性裂纹阻止特性Kca的部分区域的钢板被对接在一起以形成钢板焊接接头,其中钢板焊接接头的至少一个位置 设置有裂纹控制部,其将在钢板焊接接头处发生的脆性裂纹转移到钢板基体金属侧,形成有形成裂纹控制部的插入部件的外缘沿长度方向延伸 从钢板焊接接头的焊接金属区域的钢板焊接接头,相对于钢板焊接接头的长度方向倾斜15°〜50°,将该插入部件的水平宽度方向端 面对Kca为4000N / mm 1.5以上的钢板的区域,由此即使在焊接接头中发生脆性裂纹,也可以使脆性裂纹传播通过焊接接头 和贱金属。
摘要:
A welding method for butt-welding a first base material (1) and a second base material (2) in order to make it possible to stably and efficiently form a fillet weld-shaped bead also on the back side of a groove by arc welding from the groove side without providing a bead on the back side of the groove in advance, comprising the steps of abutting, against the root face (1a) of a first member (1) formed with a root face (1a) and a one-side grooved surface (1b), the flat surface (2a) of the second base material (2), facing a welding wire (6) with a groove formed by abutment between the first and second base materials (1, 2), melting the abutted portions, etc. of the first and second base materials (1, 2) by the arc of the welding wire (6), extruding the melt formed by the welding of the abutted portions, etc. to the back side of the groove so as to form a fillet weld-shaped bead (B4).
摘要:
Embodiments of the invention relate generally to welding methods and, more particularly, to methods for welding in a horizontal position and a joint structure suitable for such methods. In one embodiment, the invention provides a method of forming a welded joint between two components, the method comprising: aligning a first and second component (100, 200) to form a joint (300) therebetween, the joint (300) comprising: a protrusion (122) of the first component (100), and a recess (222) of the second component (200), wherein the protrusion (122) and recess (222) have complimentary shapes; orienting the first and second components (100, 200) such that a major axis (140, 240) of each is oriented vertically; and welding (730) the first and second components (100, 200) at a substantially horizontally-oriented root opening (310), the substantially horizontally-oriented root opening (310) positioned along the joint (300).
摘要:
The invention relates to a method for welding two welding parts (1, 3) by means of a fillet weld (11), wherein a first welding part (1), with a bearing surface at least in an edge area of an edge that is to be welded by means of a fillet weld, is brought into contact with a bearing surface of a welding part (3) and the welding energy (5) is supplied in an energy supply area during the welding process, exclusive of a surface (7) of the first welding part facing away from the bearing surface, said energy supply area being located at a predetermined distance from the edge of the first welding part. The welding energy is supplied in a direction, whereby the direction component thereof points perpendicular to the course of the fillet weld that is to be produced in the direction of an inner area of the first welding part, forming a welding angle of less than 90° with the contact plane of the bearing surfaces of the first and second welding parts. The welding energy is supplied until at least the energy supply area of the first welding part and a sufficient area of the second part, which is adjacent to the energy supply area of the first welding part, and also the material supply area located between the energy supply area and the edge of the first welding part are melted and fused together. The invention also relates to a welding part for carrying out said method and to an electric component with a printed conductor, which is welded to a cooling body of at least one power semiconductor element.
摘要:
The present application relates to an article (100) for electron beam (700) or laser (800) welding, which includes a workpiece (102) including a weld surface (114), wherein the weld surface (114) has at least one porosity reducing channel (116) configured to reduce porosity in a formed weld (112). The present application relates also to a process of welding such article (100).