Misunderstanding of lead-free soldering
Myth #1: It is now a lead-free era, and many customers still use traditional welding methods - this is a big mistake.
The current status quo is 70% - 80% of the manufacturers used to use conventional single-handle soldering iron (commonly known as 30W, 40W, 60W... soldering iron) to solder lead-free solder wire. Every manufacturer generally reacts to the appearance of the tip of the iron tip for about 1 day. Why?
First, let's understand why the soldering iron is corroded:
The iron tip coating is generally iron-nickel-chromium-tin. The iron coating is the key to the quality of the soldering iron. At high temperatures, iron and tin will form an alloy which will dissolve in the liquid solder, resulting in the loss of iron on the surface of the soldering iron. The last phenomenon is the piercing of the tip. Lead has the effect of inhibiting the effect of this alloy, of course, can not be completely eliminated.
In addition, the higher the composition of tin in lead-free solder, the more severe the corrosion; the higher the temperature, the faster the corrosion. This is why lead-free soldering tips are more susceptible to corrosion than leaded solders.
Second: the temperature of the lead-free tin has a higher melting point than the lead-tin solder. When the same soldering temperature is set, the amount of heat absorbed by the lead-free solder is more, and the ordinary soldering iron does not have a faster temperature compensation capability, and can only be higher. Lead-free soldering at temperatures. The result is that the soldering iron tip is more corrosive, the solder joint is more susceptible to oxidation, and the solder joint is generated. As a result, product quality is unstable.
Myth 2: I think that the lead-free soldering iron (soldering station) costs a lot.
Let's take an example to see:
1. What is the cost of using a normal soldering iron for lead-free soldering for one year? An ordinary soldering iron is calculated according to 10 yuan, the iron core is 1.20 yuan, and the soldering iron head is 2.30 yuan. The cost of that year is: 10+1.2*24+2.3*26*12=756.4 (yuan)
2. What is the cost of a high-frequency lead-free soldering iron (soldering station) for lead-free soldering for one year? High-frequency lead-free soldering iron (soldering station) 600 yuan a set, the normal service life of 5 years, the heating core 100 yuan / support, can be used for one year. The iron head is 8 yuan / branch, and it takes one week. The cost of that year is: 100+100+8*54=632 (yuan)
This calculation is cheaper than ordinary soldering irons, and the products produced are better, so why do we choose more expensive to produce worse products?
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