The phrase micro weld means the precise placement of connective metals and the application of energy to create a weld that is under 100 micrometers wide. This is usually performed under a microscope to ensure accuracy, and the actual process in some cases mimics general welding, just on a smaller scale.
In many high-volume industrial settings, this type of weld is done by a robot, requiring some skill on the part of the operator, however, some specialty or irregular welds will call for a highly-trained technician, that has very steady hands. Because it is such an exact and complicated process, which does involve specialized tools, most of these jobs are outsourced to specialists. A resistance micro weld is the most basic method and used to join flat plates of different metals.
The two plates will be overlapped slightly, and weld electrodes will be placed on either side of the overlap. Then an electrical current will be applied to heat the metal to a molten level, where the electrodes will channel this current from one to the other, through the overlap. As the metal starts to cool, it will forge a permanent bond, the method is used to join tiny seams when the joint needs to be perfectly flat, like with medical implants.
Flash micro welding will be used for butt joints, like wires or jewelry, and is performed by heating each piece with an electrical current and then clamping them together. This process creates a steep temperature gradient that runs along the axis of the piece, allowing a variety of materials and shapes to be joined without them becoming deformed. The most versatile of all operations, however, it does create sparks and is not suitable for either flammable or temperature-sensitive materials.
If you are looking for help with your metal pieces, and live in or around the Riverside, CA area, then you should call Jaime's Mobile Welding Services now at (951) 228-0798 for more information on how we can help you.