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Soldering iron is an indispensable tool for electronic production and electrical maintenance. Its main purpose is to weld components and wires. According to the mechanical structure, it can be divided into internal heating type electric iron and external heating type electric iron. According to the function, it can be divided into non-suction soldering iron and suction. Tin-type soldering irons are divided into high-power soldering irons and low-power soldering irons depending on the application.
The soldering iron is divided into two types: external heat type and internal heat type:
The external heating type soldering iron is composed of a soldering iron head, a soldering iron core, a casing, a wooden handle, a power lead, a plug and the like. Since the tip is mounted inside the iron core, it is called an external heating type soldering iron. The iron core is a key component of the soldering iron. It is formed by winding the heating wire in parallel on a hollow ceramic tube. The mica sheet in the middle is insulated, and two wires are connected to the 220V AC power supply. There are many specifications for external thermal soldering irons, such as 25W, 45W, 75W, 100W, etc. The higher the power, the higher the temperature of the soldering iron.
The internal heat type soldering iron is composed of a handle, a connecting rod, a spring clip, a soldering iron core and a soldering iron head. Since the iron core is installed inside the soldering iron tip, the heat is fast and the heat utilization rate is high, so it is called an internal heat type soldering iron. The common specifications of the internal heating type soldering iron are 20W and 50W. Due to its high thermal efficiency, the 20W internal thermal soldering iron is equivalent to an external thermal soldering iron of about 40W. The rear end of the internal heat type soldering iron is hollow, and is sleeved on the connecting rod and fixed by the spring clip. When the soldering iron head needs to be replaced, the spring clip must be first removed, and the front end of the soldering iron head is clamped with the pliers. Pull out slowly, remember not to use too much force to avoid damaging the connecting rod.
1. External thermal soldering iron
It consists of a soldering iron head, a soldering iron core, a casing, a wooden handle, a power lead, and a plug. Since the tip is mounted inside the iron core, it is called an external heating type soldering iron. The iron core is a key component of the electric iron. It is formed by winding the heating wire in parallel on a hollow ceramic tube. The mica sheet in the middle is insulated, and two wires are connected to the 220V AC power supply. There are many specifications for external thermal soldering irons, such as 25W, 45W, 75W, 100W, etc. The higher the power, the higher the temperature of the soldering iron.
2, internal heat type soldering iron
It consists of a handle, a connecting rod, a spring clip, a soldering iron core, and a soldering iron tip. Since the iron core is installed inside the soldering iron tip, the heat is fast and the heat utilization rate is high, so it is called an internal heat type soldering iron. The common specifications of the internal heating type soldering iron are 20W and 50W. Due to its high thermal efficiency, the 20W internal heating soldering iron is equivalent to an external thermal soldering iron of about 40W. The rear end of the internal heat type soldering iron is hollow, and is sleeved on the connecting rod and fixed by the spring clip. When the soldering iron head needs to be replaced, the spring clip must be first removed, and the front end of the soldering iron head is clamped with the pliers. Pull out slowly, remember not to use too much force to avoid damaging the connecting rod.
3, constant temperature electric iron
The electric soldering iron is equipped with a magnet type temperature controller in the thermostatic electric iron head to control the energization time to achieve temperature control, that is, when the electric iron is energized, the temperature of the soldering iron rises, and when the predetermined temperature is reached, the strong magnet sensor When the Curie point is reached and the magnetic force disappears, the core contact is disconnected, and the supply of the soldering iron is stopped. When the temperature is lower than the Curie point of the strong magnet sensor, the strong magnet recovers magnetic force and attracts magnetic The permanent magnet in the core switch causes the contact of the control switch to be turned on and continues to supply power to the soldering iron. In this way, the purpose of controlling the temperature is achieved.
4, tin soldering iron
It is a desoldering tool that dissolves the piston type soldering device and the electric soldering iron. It is easy to use, flexible, and has a wide range of applications. The disadvantage of this tin soldering iron is that only one solder joint can be desoldered at a time.
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