​25w iron resistance is about 2 k Ω, 45 w iron resistance is about 1 k Ω, 75 w iron Ω resistance is about 0.6 k, 100 w iron Ω resistance is about 0.5 k. Soldering iron head is made of red copper material, its function is to store heat and heat conduction, its temperature must be welding temperature is much higher than.

Mechanical use：

With internal and external heated electric welding head can be changed. You can use a few welding head, the welding head into the shape of the you need to use what is what, is very convenient. Welding head can use emery wheel grinding, but the mill must take welding head away from the soldering iron, otherwise may damage the soldering iron core.

New iron before use, apply a sandpaper will play light welding head, electric heat, dip in on rosin with welding head blade surface contact after solder wire, make the soldering iron head evenly coated with a layer of tin.

In so doing, can facilitate welding and prevent the oxidation of the surface of the welding head. Old welding head, such as severe oxidation and black, steel cutting down to the surface oxide are available, and to make it show metal luster, tin plating, again to use. Soldering iron with a 220 v ac power, when using, pay special attention to safety.

The electric plug it is best to use three pole plug. To make the shell properly grounded. Before use, should carefully check the power plug, power cord is damaged. And check whether the welding head is loose.

Soldering iron used, not hitting. To prevent falling. When soldering iron head too much, can wipe with cloth. Others not disorderly jilt to prevent burns. During the welding process, soldering iron can not all over the place.

Not when welding, should be on the iron frame. Pay attention to the power cord is on the soldering iron head to prevent hot insulation and accident. After use, should be timely cut off power supply, unplug the power plug. After cooling, and then will withdraw the toolkit soldering iron.

When welding, solder and flux is needed. Rosin core is commonly used welding electronic components, the solder wire. This kind of solder wire, low melting point, and it contains rosin flux, use very convenient.

Commonly used water flux is rosin and rosin rosin dissolved in alcohol (will). Using flux, can help remove oxide on the surface of the metal, welding, and can protect the welding head. Components or a wire welding is bigger, also can use solder paste.

But it has a certain corrosive, should keep clear of residues after welding. In order to facilitate welding operation often USES the long nose pliers, side cutting pliers, tweezers and a small knife as auxiliary tools. Should learn the correct use of these tools.

Right hand soldering iron. The left hand with a long nose pliers or tweezers clamping components or wires. Soldering iron should fully preheating before welding. Tin soldering bit blade surface to eat, that is, to bring a certain amount of solder. The welding head face close to the solder joint.

Soldering iron and water level about 60 ℃ angles. So that the molten tin from the soldering iron head stream to the solder joints. The time duration of the welding head in the solder joint control in 2 ~ 3 seconds. Carry open welding head. Left hand remained components.

After being tin solder joints in cooling solidification, to loosen the left hand. Turn the lead by tweezers, confirmation is not loose, then side cutting pliers to cut excess leads are available.

Practice guidance

Soldering iron is used for welding of electrical components, for the convenience of use, usually with the solder wire as flux, solder wire generally contain a run-off in rosin. Solder wire using about 60% tin and 40% lead synthesis, low melting point.

Rosin is a kind of flux, can help welding, must have the erhu, heard that also can buy from the pharmacy. Rosin can be directly used, can also be configured to rosin solution, is crushed the rosin, in a small bottle, add alcohol.

Pay attention to the alcohol volatile, remember to put the caps after use. The bottle can put a small piece of cotton, available with forceps clip out) on the printing plate or the components.

Soldering iron is pinched in the hand, when using, must pay attention to safety. New soldering iron with a multimeter resistance first check the plug and metal case, the resistance value between the multimeter pointer should not move. Otherwise should be checked thoroughly.

Manufacturer of internal heating type soldering iron, in order to save costs, don't have to rubber power cord yarn, but directly with plastic wire, less security. It is strongly recommended that change with rubber yarn, because it is not easy to burn, like plastic wire breakage, and short circuit or get an electric shock.

New electric file file before using the soldering iron tip, wait for a while after turning on the power supply of the welding head color will change, proving that the soldering iron fever, and then use tin plating on solder wire on the soldering iron tines, make the iron not easy to be oxidized.

In use, should make the welding head kept clean, and ensure the soldering iron tip always have solder.

Using a soldering iron, solder iron temperature is too low, melting solder, or make the solder not completely melt and become not good-looking, not reliable. Is too high and can make the iron "burned" (although the temperature is very high, but not dipped in tin).

Also to control the welding time, soldering iron stay time too short, solder is not easy to melt completely, good contact, form a "virtual welding, and welding time is too long, easy to damage, or make the printed circuit board copper foil cock is generally one or two seconds to welding good a spot, if not completed, would rather wait for a while to weld again.

When welding the soldering iron can't move, should choose good contact with the position of the solder joint first, reoccupy of welding head lining tin surface to reach solder joints.

Brief introduction:

1. The high performance ceramic heater, heat transfer speed, can be welding work in a minute.

2. The welding head long and thin, the most suitable for precision circuit boards welding work.

3. The heater with a single bond connector to replace the small heater, and the power cord, easy to use, the maneuverability is strong, is the ideal choice for precision welding.

4. Voltage of 240 v / 220/230.

Dongguan double mau electronics technology co., LTD is a professional development, production and sales of high performance constant temperature soldering station. High-frequency high power welding machine, hot air welding machine, welding head, iron stand, electronic connectors, switch power supply, power adapter, soldering materials of electronic science and technology co., LTD. : brands - SMT double alum, SUOBA speed, ZLONG intelligence
​