The ideal temperature for soldering is 662 °F. It is the temperature at which the solder will flow smoothly and create a strong bond. The solder should be between the melting temperature of 626 °F and 734 °F. It means that, according to this definition, the solder melts when it comes in contact with a hot component lead. For ensuring a good joint, the soldering iron’s tip should be at least 35,6 °F hotter than the solder. The ideal time to hold a solder joint is 2 seconds.
It is essential to use a thermometer to measure the temperature to achieve the best results accurately. Using the correct soldering temperature has several benefits. For example, it helps to ensure a strong bond between the solder and the metal, prevents the metal from becoming overheated, and results in a smooth, clean finish.
What happens when the temperature is too high?
When the temperature is too high, it can damage the components or wires. Therefore, it is important to find the right balance so that the solder flows smoothly and creates a strong connection. In addition, the iron has a finite amount of power, based on how large it is, what type of heating element is in use, and the overall construction quality. So, if you are using too much of its capacity for a particular job, things won’t go well no matter how high it is.
The tool’s temperature must not exceed 932 °F, or it will damage the electronic components and insulation on wires/leads, leading to premature failure. Some plastic melts at lower temperatures, so too much heat can damage it.
If you overheat a joint, the solder will “wet” the component lead, creating a solder connection that is too large. It may pull away from the board surface, producing mechanical stress at the interface and poor electrical contact.
Besides, at temperatures above the solder’s melting point, the solder will flow too freely and may cause a joint to overflow, making it difficult to control the shape of the joint.
What happens when the temperature of soldering instruments is too low?
The main concern about the temperature of soldering instruments is that if it is too low, the solder will not melt properly, and the joint will not be substantial. Instead, it creates a cold joint. A cold joint will have loose connections, poor conduction, and impaired contact. In addition, if the solder does not fuse properly with the metal, it can create a weak spot in the finished product, leading to failure down the road. So, if one uses a gun or iron for soldering and has a low temperature, there is a higher risk of damaging the wires.
In addition, the heat will not transfer correctly to the solder, which makes joints difficult. You can see it in a poor wetting action, where the solder does not attach itself to the metals.
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