Soldering iron usage tutorial and soldering iron manual soldering operation points
The soldering iron is one of the main tools used by electronics enthusiasts for amateur production and repair.
It mainly consists of copper soldering iron head, with electric heating wire wound soldering iron core and wire, handle and other parts.
Soldering iron core directly connected to the 220V mains, used to heat the iron head, the iron head is stained with dissolved solder welding circuit board components.
From the construction points, the soldering iron has two kinds of endothermic and exothermic. Endothermic soldering iron soldering iron core installed in the iron head of the internal, so the volume is small, high thermal efficiency, power tens of seconds can be tin soldering. External heat type soldering iron soldering iron head installed in the soldering iron core, so the volume is relatively large, low thermal efficiency after powering up the soldering iron head tin time up to a few minutes.
From the capacity points, the soldering iron has 20W, 25 W, 35 W, 45 W, 75 W, 100 W to 500 W and other specifications. Hobbyists generally use 25 W internal heat type soldering iron.
The relationship between the power and temperature of the soldering iron
15W 280℃----400℃ 20W 290℃----410℃ 25W 300℃----420℃ 30W 310℃----430℃ 40W 320℃----440℃ 50W 320℃----440℃ 60W 340℃----450℃
2、Soldering iron head and trimming tinned
(1) the soldering iron head is generally made of copper, for the soldering iron head with plating, generally do not file or polish. Because the purpose of the plating layer is to protect the iron head is not easy to corrode. There is a new type of alloy soldering iron head, longer life, but need to match the special iron. Generally used for fixed products printed circuit board welding.
Soldering iron for the first time, the first soldering iron head should be hung tin, so that the future use of tin soldering. Hanging tin method is very simple, before power, first with sandpaper or knife to clean up the end face of the soldering iron head, after power, to be the temperature of the soldering iron head rises to a certain degree, will be placed on the soldering iron head to dissolve, so that the end face of the iron head hangs on a layer of tin. After hanging tin soldering iron head, at any time can be used for welding.
(2) Common soldering iron head trimming and tin plating
Soldering iron head after using for a period of time, the surface will be uneven, and the oxidized layer is serious, this situation needs to be trimmed.
General will take down the soldering iron head, clamped to the vise on the coarse file, trimming for their own requirements of the shape, and then use a fine file to fix the flat, and finally with fine sandpaper to play grinding light. For welding digital circuits, computer work, but also need to file fine, and then trimmed. After finishing the soldering iron should be tin-plated immediately, the method is the soldering iron head loaded with electricity, put some rosin on the board and put a section of solder, soldering iron dipped in tin in the rosin back and forth friction; until the entire soldering iron to fix the surface of the uniformly plated on a layer of tin so far.
Note: The soldering iron must be dipped in rosin immediately after energizing, otherwise the surface will generate a difficult tin-plated oxide layer.
