1. Types and power of commonly used electric soldering irons
Uobičajeno korišteno električno lemljenje glača are podijeljeno na dva tipovi: unutarnje grijanje tip i vanjsko grijanje tip. The lemljenje željezo tip of unutrašnje grijanje tip iono grijanje tip električno lemljenje željezo je izvana te grijanje žica. Ovo električno lemljenje željezo topline up brzo i svjetlo in težina. The lemljenje željezo tip the eksternalno grijanje električno lemljenje željezo je umetnuto into to grijanje žica. Ali it topline polako, it je relativno firma.
The electric soldering iron is directly heated by a 220V AC power supply. The power cord and the case should be insulated, and the resistance between the power cord and the case should be greater than 200M ohms.
Electronic hobbyists usually use 30W, 35W, 40W, 45W, 50W soldering irons. A more powerful electric soldering iron has a lower heating wire resistance. Ohm's law derivation formula: R=U/I=U/I*U/U=U^2/P
2. Mjere opreza za u use of električno lemljenje željezo
(1) The newly purchased soldering iron must be dipped in a layer of tin before use (energize the soldering iron, and then use the tin bar to approach the tip of the soldering iron when the soldering iron is heated to a certain point). File bright, then turn on the electric heating to heat up, dip the tip of the soldering iron with a little rosin, and tin it when the rosin smokes, so that the surface of the tip of the soldering iron is first coated with a layer of tin.
(2) After the electric soldering iron is energized, the temperature is as high as as 250 degrees Celzijus. When not in use, it should be placed on the soldering iron stand, but when it is not used for a long time, the power should be cut off to prevent the high temperature from "burning" the soldering iron tip (oksidirano). It is necessary to prevent the electric lemljenje željezo od opekotina ostalo komponente, Posebno The Power Cord. If The Insulation Layer Is Burned By The Soldering Iron Without Paying Attention, It Will Easy Lead To Safety Accidents.
(3) Do not hit the soldering iron violently, so as not to shock and break the grijanje žica or olovo žica inside the soldering iron and uzrok kvar.
(4) After using the soldering iron for a period of time, there may be tin dirt on the tip of the soldering iron. We can lightly wipe it off with a damp cloth when the soldering iron is grijana. If there are pits or oksidirana blokova, use a a sitnozrnata file to repair or directly replace the soldering iron tip.
The chemical tvari hlapljivo by HEAT The flux are Harmful to The Human body. If the nose is too close to the tip of the soldering iron during WORK, it is easy to inhale the Harmful gas. Općenito, the distance from the soldering iron to the nose should be at least not than 30cm, obično 40cm is appropriate.
There are three ways to hold the electric soldering iron, as prikazan in Slika 1. The anti-grip method is stable in action, and it is not appropriateable for fatigue after long-term operation. It is appropriateable for after long-term operation. It is appropriateable for the operation of high-power soldering irons. The overhand grip is appropriate for operation with medium-power solder irons irons with an angled tip. Općenito, when zavarivanje printan circuit boards and other weldments on the operating tablica, The Pen Holding Method Is Often used.
There are generally two ways to hold solder wire, as shown in Figure 2. Since lead accounts for a certain proportion in the welding wire composition, it is well known that lead is a heavy metal harmful to the human body, so you should wear gloves or wash your hands after operation to avoid ingestion.
