Solderring technologies technics

Soldering

soldering iron

A soldering iron used for most electronic soldering applications. It is usually a soldering iron that creates heat from electrical energy. For ease of use, which is called Electric Soldering Iron: There are generally 2 types:

soldering iron gun

Soaking soldering iron

Electric Soldering Gun

It is a type of soldering iron that uses high heat and fast speed. By the work of the soldering iron This type uses the principle of a transformer. That is, convert the home voltage into low voltage electricity. But can pay high current Inside the soldering iron is a transformer with 3 sets of coils wrapped on an iron core. The primary set is wound with a large number of turns of thin wire and is connected to a 220 volt household power outlet. As for the secondary set, there are 2 coils: a small wire coil. Wrap it to get a voltage of about 2.2 volts to use to light a small light bulb to show the work. The other coil is wrapped with twine 5-6 turns to get a very high current and connected to the soldering iron tip set. to create heat for soldering Turning off and on will use a switch. which looks like a gun trigger To turn on and off the heating while in use

Soldering iron (Electric Soldering)

This type of soldering iron must be plugged in and left hot all the time. Because there is no off-on switch. Gun soldering iron type In most cases, it must be plugged into an electrical outlet at all times until the work is finished. When re-inserted, you will have to wait quite a long time for the soldering iron to heat up to usable level. The internal structure is a heating wire wound over an insulator wrapped in mica. And there is a joint for connecting at the tip of the soldering iron. The heat generated is generated by current flowing through the heating coil at the tip of the soldering iron and transferred to the tip of the soldering iron used for soldering.

This type of soldering iron is often used in circuit assembly work because it provides constant heat. There are many sizes to choose from and many soldering iron tips to choose from. They range in size from 6 watts to 250 watts, but those used in electronics use 15-30 watts, which does not produce very high heat, suitable for soldering devices on printed circuit boards. In addition, in some models there is a press switch to increase the heat level to a high level. For the soldering tip of an immersion soldering iron. There will be both used and corroded types. and can change the tip

solder lead

Solder used An alloy of tin and lead is commonly used. In order to melt at a low temperature, the ingredients will be specified as tin / lead, for example, 60/40 lead solder will have a mixture of 60% tin and 40% lead. In addition, the solder has lead. An appropriate amount of flux (Flux) will be inserted inside to increase ease of use. The function of the flux is to absorb metal oxides which are formed by joining together. Reaction of oxygen in the air Makes the joint between lead and metal more tight. By inserting this flux throughout its entire length, some types have up to 5 cores and are called by the manufacturer as Multi-core lead (Multi-core)

Soldering techniques

soldering work pieces Beginners must choose the right soldering iron for the job. Both in the heating part and the tip of the soldering iron. There is preparation before soldering as follows:

Clean the tip of the soldering iron with a soft cloth. or fireproof sponge And in the case of using the soldering iron for the first time, the soldering iron should be plugged in and left until it is fully heated. Then use lead to put it on the tip of the soldering iron. For further use, the lead will be attached to the tip of the soldering iron.

Before soldering, the workpiece should be cleaned first.

Holding the soldering iron Use your hand to support the soldering iron without applying pressure.

Apply heat to both workpieces. Then distribute the solder between the work pieces.

Supply lead to the work piece

When lead melts So slowly withdraw the lead.

Then slowly withdraw the soldering iron from the workpiece in sequence.

Note: You should not use a soldering iron to melt lead and then apply it to the workpiece because the lead will not stick to the workpiece. This causes problems in the workpiece being soldered.