Microwelding


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Microwelding

 

the welding of nonferrous and ferrous metal parts of small thickness (less than 0.5 mm) and cross section (up to 10 sq mm); also, the welding of metal parts to semiconductor crystals. Optical instruments (such as a loupe or microscope) mounted on the welding machine are used in microwelding.

Microwelding may be done by the pressure-contact, electric, electrostatic, cold, ultrasonic, thermocompression, electron-beam, or laser methods, as well as their combinations, depending on the characteristics of the items being welded, and also on technological requirements. It is used in the electronic and radio-engineering industries and in instrument-making.

References in periodicals archive ?
Micro mode helps with delicate tasks, enabling microwelding on sheet metal as thin as 0.
Among the topics are challenges in manufacturing from the mesoscopic to nanoscopic scales, microgrinding, magnetorheological and allied finished processes, laser microwelding, dimensional metrology for microscale and mesoscale manufacturing, and an integrated wafer surface evolution model for chemical mechanical planarization.
Veslatec Oy (Vaasa) is a subcontractor in fine mechanics offering precision and microwelding, as well as cutting and drilling, mainly using Nd:YAG pulsed laser technology.
This work developed and verified models to account for varying temperature conditions during squeeze flow and intermolecular diffusion for thermoplastic microwelding.
For instance, Potomac Photonics in Lanham, MD recently added microwelding capabilities to its portfolio so that it can make full devices, further simplifying its customers' supply chains.
A few of the specific topics examined include microstructural characterization of eutectic Sn-Au solder as a lead-free solution, designing sealing glasses for solid oxide fuel cells, resistance microwelding of fine nickel wires, and YAG laser and TIG arc welding phenomena.
By using balls manufactured from silicon nitride instead of tool steel, microwelding in the ball nut is eliminated.
Table 1: Leading Players in Worldwide Pistons Market (2006E): Market Shares by Company - Mahle, Kolbenschmidt, Federal- Mogul and Others (includes corresponding Graph/Chart) II-4 Piston Rings II-4 Trends in Piston Ring Materials, Designs, and Coatings II-5 Cast Iron Rings Vie with Moly-Faced Ring Set in Late Model Engines II-5 Ring Sets Moves Higher Up II-5 Rings Get Thinner and Smaller II-5 Piston Rings Turn Smoother, Flatter II-5 Piston Rings Coating: A Solution to Microwelding and Groove Pound-out II-5 Engine Valves II-6
Coherent says its high-power F-Package Diode Laser System was selected for Ohio State University's microwelding research because it reportedly offers the highest degree of brightness available in fiber-coupled turnkey laser systems.