Characteristics and differences between soldering iron tip copper and brass materials
The reason why the electric soldering iron tip uses copper material is based on the following reasons: the first choice of the material for the soldering iron tip is that the molecules of the soldering iron tip material must have affinity with the molecules of the solder, so that the soldering iron tip can stick to it after it is heated. Apply soldering tin to facilitate the welding operation; secondly, the material of the soldering iron tip has a larger heat specific capacity, which means that the heat preservation performance is better; the material has good oxidation resistance at the welding temperature. Before the advent of alloy long-life soldering iron tips, copper, one of the metal materials that met the above conditions, was the first material.
The characteristic of red copper is that it conducts heat quickly and is easy to tin, but it is not resistant to corrosion. The soldering iron tip is not strong enough when used in micro welding and is easy to deform and break. Nowadays, the soldering iron tip is made of steel material that is not easy to break, and the external coating is corrosion-resistant and easy to apply tin coating. Although the thermal conductivity is poor, it has little effect, but it is very durable.
The higher the purity of copper, the more durable it is, and the denser it is, the more durable it is. The reason why the copper tip is ablated is that the temperature is too high. The copper combines with the lead-tin alloy to form a copper-containing alloy, which is corroded, and the new copper tip will be After heating to 350 degrees and clamping, hammer and forge the tinned part, which can greatly extend the service life. Welding with high-temperature solder (such as lead) can use a silver soldering iron tip.
Brass soldering iron tips have poor thermal conductivity and are more durable than copper below 400 degrees Celsius. When temperatures exceed 450 degrees, they will ablate faster and are far inferior to copper. In the final analysis, the life of the soldering iron tip depends more on the long-term working temperature of the soldering iron tip.
Copper - as a thermal conductor, it is the main component of the soldering iron tip. It accounts for about 85% of the material of the soldering iron tip. Copper has good thermal conductivity, which is helpful for the tip to heat up quickly. Good soldering tip tips are made of copper. Currently, some manufacturers use brass or even iron directly for profit. Reduce costs and also reduce the thermal conductivity of the soldering iron tip.
No matter what kind of soldering iron tip is used, it needs maintenance. The so-called maintenance, firstly, do not use it at an excessive temperature, secondly, never let your soldering iron tip burn in the air without the protection of solder, thirdly, when cleaning the soldering iron tip, use a temperature-resistant sponge and add water, and never use a sharp tool to scrape it.
