The solder wire is mainly composed of tin alloy and additives. In today's life, there will be manual welding of electronic components. In this process, many tools will be used, and solder wire is one of them. In fact, not only solder wire is used in the welding process of electronic components, but also in many places in life. Therefore, we must learn to choose solder wire correctly, and if we want to choose solder wire correctly, we should first understand the price of solder wire.
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　　 Solder wire price
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Elec soldering iron soldering rosin core leaded solder wire soldering lead-free no-clean tin wire 0.5mm / 0.8mm / 1.0m450g lead-free 0.5mm: ï¿¥ 137.00
Vico WK84307 rosin core solder wire solder wire soldering iron soldering lead-free high-purity no-clean wire diameter 1.0mm: ï¿¥ 39.00
Old A (LAOA) high-purity no-clean solder wire 400g containing rosin 0.8MM (single) LA812108: ï¿¥ 99.00
Star (SATA) 90311 reel electric soldering iron high purity solder wire solder bar solder wire containing rosin: ï¿¥ 116.00
Strong (QLG) rosin core solder wire 63A low temperature active solder wire no-clean solder wire diameter 0.5mm weight 500g [63A]: ï¿¥ 98.00
Note: The above prices are all from the Internet, for reference only.
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　　 Process flow of solder wire
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The first step in the production of solder wire is the detection of tin, lead, rosin, and anti-oxidants. The inspectors check that the materials meet the standards and then transfer to production before production.
The second step is the melting of the tin material. The main and auxiliary materials are debugged according to a certain proportion and put into a melting furnace. After melting, the surface is covered with an antioxidant. , Shape tetragonal, hexagonal or orthorhombic crystals,) increase the temperature and agitate slightly to make it completely fused.
The third step is the casting of tin material. The heating in the fusion process is based on oil and electric heating. Some manufacturers use coal for heating. Using oil and electric heating requires a corresponding special heating furnace that can automatically stir the temperature and time. Very good automatic control to reduce the possibility of poor fusion caused by human factors. The molten tin material is poured into the mold and cast into a rod-shaped billet.
The fourth production step is wire extrusion. In the entire production process of solder wire, the extrusion of tin material is the most critical, because extrusion is a key link in the entire production process. If there are defects and hidden dangers during extrusion, it will lead to solder Wire defects, sometimes it is difficult to find problems, in order to ensure the production of high-quality products, the tight control of the extrusion is very heavy rod-shaped extrusion of solder wire in the hydraulic press and extrusion die, intermittent wire injection in the extrusion process According to the requirements of production, round wire, skein wire, thick wire and thick wire can be made with different molds.
The fifth production step is winding. During operation, the winding leveling can be counted under full-automatic control. During winding, uneven winding and unevenness may occur. These problems should be paid attention to during production.
The sixth step is the packaging and inspection of solder wire.
The above is the content about the price of solder wire and its technological process. There are two types of solder wire, lead-free and leaded. The price of a coil of solder wire is determined by several aspects. One is its weight. A coil of solder wire has different sizes, so the price is different in terms of weight. The other is the degree (that is, the tin content / degree that people often say). The higher the tin content, the higher the price.
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