摘要:
Disclosed are a special tooling and method for electron beam welding of a cavity body and a beam tube of a superconducting niobium cavity. The special tooling includes a first clamping device for fixing a flange and a second clamping device for fixing a semi-cavity body, wherein the first clamping device and the second clamping device are fixedly connected. A pressing ring of the first clamping device is disposed around a beam tube of a superconducting niobium cavity and cooperates with a base plate to clamp and fix the flange. The second clamping device includes clamping arms evenly distributed along a circumference of the semi-cavity body, and each clamping arm includes a second pressing plate axially disposed along the beam tube and a pressing block that is disposed on an end portion of the second pressing plate and fixes an edge of the semi-cavity body.
摘要:
A method for producing a piston for an internal combustion engine may include the steps of: producing a piston main body from a first blank via a deformation process; producing a piston ring part from a second blank via at least one of a deformation process and a casting process; pre-machining the first blank and the second blank, and finish machining a welding surface of the first blank and a welding surface of the second blank; connecting the pre-machined first blank and the pre-machined second blank via a welding process to form a piston body; and performing at least one of a secondary machining and a finish machining of the piston body to produce the piston.
摘要:
A method for producing a rotor, particularly a turbine disk or a turbine ring for a turbine stage of a turbomachine, wherein at least the following steps are carried out: producing a blade ring (14) including a plurality of rotor blades (12), welding adapters (22) together which are disposed in the region of blade footings of the rotor blades (12), wherein at least substantially radial weld seams (30a) having predetermined welding depths are generated, disposing a rotor disk (32) or a rotor ring on the blade ring (14), and welding the rotor disk (32) or the rotor ring to the adapters (22) of the rotor blades (12), wherein at least one further weld seam (30b) is generated. A rotor, particularly a turbine disk or a turbine ring for a turbine stage of a turbomachine is also disclosed.
摘要:
A method for producing a fork arm (18) for load-carrying devices, said fork comprising a fork blade (5) which is substantially horizontal in the operating position, and a substantially vertical fork back (20) that connects via a fork bend (19) to said fork blade and is provided with connection elements (2, 3) for the conveying device, wherein the fork arm consists of a plurality of parts (1; 2, 4, 8, 9, 11; 18′, 12 to 17) that are connected to one another, at least a number of said parts are welded to one another, and parts (1; 2, 4, 8, 9, 11; 18′, 12 to 17) of the fork arm are welded to one another by electron beam welding and/or laser welding, wherein the weld penetrates planarly with a depth of at least 15 mm between adjoining surfaces of the parts.
摘要:
The present invention relates to a structural component 1; 21; 31; 41, in particular for a motor vehicle body, comprising a cold-formed first formed part 2; 32; 42 and a warm-formed and hardened second formed part 3; 23; 33 with a variable thickness along a longitudinal extension L2 of the second formed part 3; 23; 33, wherein the second formed part 3; 23; 33 has a connection portion 7; 27; 37 for being connected to the first formed part 2; 32; 42, wherein the connection portion 7; 27; 37 is distanced from an outer edge 13 of the first formed part 2; 32; 42 such, that the structural component 1; 21; 31; 41 has a one-layered flange portion 12 of the first formed part 2; 32; 42 between the connection portion 7; 27; 37 and the outer edge 13, and wherein the first formed part 2; 32; 42 and the second formed part 3; 23; 33 are connected to each other by means of a high energy beam welding seam 19 along a connection edge 18 of the connection portion 7; 17; 27. Furthermore, the present invention relates to a method for manufacturing a structural component 1; 21; 31; 41.
摘要:
An electron beam welding method capable of restoring toughness even when high heat input welding is performed. The electron beam welding method comprises: forming a first weld bead (3) so as to include a groove (2) provided at the butt portions of two base materials (1), and forming a second weld bead (4) and a third weld bead (5) having a narrower width than the first weld bead (3), at predetermined positions displaced from the groove (2) and centered symmetrically about the butt portions so as to include a portion of the first weld bead (3), using a lower heat input than that used during formation of the first weld bead (3).
摘要:
To provide a turbine rotor which enables mass production with a low-cost apparatus and which capable of suppressing leaning of the rotor shaft after welding to improve the yield, while a turbine blade rotor 12 and the rotor shaft 14 are fit to each other with concave and convex portions 12a and 14a and are permitted to be rotated, laser beam L from a laser beam generating device 30 is applied to a joint face 16 along the circumferential direction to weld the welding portion. Then, laser beam L is polarized to temper a region X on the rotor shaft side containing the welding portion with laser beam L. In contrast to residual stress R1 having a local angular distribution generated during the welding, residual stress R2 is permitted to be generated over the entire circumference by tempering. Leaning of the rotor shaft 14 after cooling is thereby be suppressed.
摘要:
A method for producing a hollow valve of an internal combustion engine may include providing a hollow valve stem, a valve cone, and a valve bottom; pushing the valve cone over the valve stem via a press fit, wherein the valve cone includes an outer surface transitioning to the valve stem to define a testing surface; and welding the valve cone to the valve stem via at least one of a laser beam and an electron beam, wherein the welding occurs such that no melting of the outer surface in the region of the testing surface of the valve cone occurs.
摘要:
An improved header assembly and corresponding port assembly comprising a tensioning member, wherein the tensioning member is isolated and separate from the weld portion and is adapted to place a threaded portion between the header assembly and port assembly in tension and maintain such tension, and thus relieve tension from the weld, before and after welding, thereby increasing the lifespan of the header and port assemblies.
摘要:
A pressure transducer assembly including: a pressure sensor header; a transducer assembly member; and a joining arrangement disposed at an interface of the header and the transducer assembly member, for joining the header with the transducer assembly member, the joining arrangement including: a recessed female joining element formed in one of the header and the transducer assembly member; and a protruding male joining element formed on the other of the header and the transducer assembly member, the male joining element received in the female joining element.