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Why is silver added to lead-free solder wire

2019-12-25 15:40:12 Sources: Shenzhen Xinghongtai Tin Industry Co., Ltd. 890

Some silver is added during the processing of lead-free solder wire, and the main role of silver is to enhance the conductivity. Among the metals used when silver is the most conductive, silver is added to the solder wire series lead-free solder wire in order to enhance the conductivity. Generally, when soldering audio speakers and crossovers, silver-free lead-free solder wire is used in order to pursue better sound quality. The following is a small editor from a solder wire manufacturer in Shenzhen, which will introduce why silver is added in the process of producing lead-free solder wire.

 
1. The role of silver is to enhance its electrical conductivity. Although the main component of lead-free tin wire is tin, there are also other metals. Solder wire is mainly divided into leaded (non-environmental) and lead-free (environmental-friendly). With the development of society and economy, more and more electronic processing factories choose lead-free solder wire. Leaded tin wire: It is mainly composed of tin and lead in an appropriate ratio, and the main components are tin copper, tin silver copper, and so on.

1. Leaded solder: an alloy consisting of tin (melting point 232 degrees) and lead (melting point 327 degrees). The solder consisting of 63% tin and 37% lead is called eutectic solder, and its melting point is 183 degrees.

2. Lead-free solder: ROHS standard proposed to meet EU environmental requirements. Solder is made of tin-copper, tin-silver-copper and other alloys.

For leaded solder wire, everyone knows the dangers. It is still safe to solder circuit boards during the production process. For these solders, they are relatively fine and require a high level of soldering. During the welding process, a certain amount of fumes will be generated. The fumes contain a certain flux. The flux is composed of rosin and some active agents. Wearing a mask or gas mask, and a low exhaust system in the workplace is better. Remember to wash your hands after the work is completed. These are good precautions.