According to different melting points, it can be divided into hard solder and soft solder; according to different components, it can be divided into tin-lead solder, lead-free solder, silver solder, copper solder, etc. Shapes of Commonly Used Solders ，
tin wire，tin bar, Solders are often processed and formed according to the specified size when used, and there are many kinds of sheets, blocks, rods, strips and wires.
(1) Filament solder - usually called solder wire, with rosin flux in the center, called rosin core wire, which is commonly used in manual soldering.
(2) Sheet solder - commonly used in the welding of silicon wafers and other sheet welds.
(3) Ribbon solder - commonly used in automatic assembly production lines, an automatic welding machine is used to punch a section from the ribbon-shaped solder for welding to improve production efficiency.
(4) Solder paste - It is made by mixing solder and flux powder together. It has been widely used in the automatic patch process.
Solder with a lower melting point. Mainly refers to the solder made of tin-based alloys. Melting method ingot, pressure processing into material.
Welding Definition
Solder materials are indispensable in the production and maintenance of the electronics industry. Generally speaking, commonly used solder materials include tin-lead alloy solder, antimony solder, cadmium solder, silver solder, and copper solder.
The wire solder used in standard soldering operations is called rosin-cored solder wire or solder wire. Flux is added to the solder.
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