There are two types of soldering irons: external heat and internal heat.
The internal heat type soldering iron is small in size and inexpensive. General electronic production uses 20W-30W internal heat type soldering iron. Of course, there is a 50W external heating soldering iron that can be prepared. The internal heating type soldering iron has high heat generation efficiency, and it is also convenient to replace the soldering iron tip.
External heat type As the name suggests, "external heat" means "heating outside", because the heating resistor is named outside the electric iron. It is suitable for welding large components and for soldering small components. Since the heating resistor wire is outside the soldering iron tip, most of the heat is radiated to the external space, so the heating efficiency is low and the heating speed is slow. It is generally necessary to preheat for 6 to 7 minutes to weld. Its large size makes it inconvenient to solder small devices. However, it has the advantages of longer time and higher power of the soldering iron head, and has various specifications such as 25W, 30W, 50W, 75W, 100W, 150W, 300W and so on. High-powered soldering irons are usually externally heated.
How much is the temperature of the soldering iron?
What is the temperature of the soldering iron? This is determined by the practical application of the soldering iron. Generally speaking, the temperature at which the soldering iron can solder a tin point for 4 seconds is a suitable temperature. If the soldering iron is purple, the temperature is too high.
Specifically, when the electronic material needs to be inserted directly, the temperature of the soldering iron tip should be set between 330 and 370 degrees. If it is a surface mount material, the temperature is suitable between 300 and 320 degrees, and the maintenance of the buzzer needs 270- At a temperature of 290 degrees, the welding temperature of large component feet should not exceed 380 degrees. In addition, for special materials, special temperature settings are required. 
Editor in charge: Zhao Hongli
An electric actuator is a device that converts electrical energy into mechanical motion. It is used to control the movement of various mechanical systems, such as valves, dampers, and other industrial equipment. Electric actuators are commonly used in industrial applications where precise positioning, speed control, and high accuracy are required. They are also used in the automotive industry, aerospace industry, and medical equipment. Electric actuators are available in different types, including linear actuators, rotary actuators, and multi-axis actuators. They can be powered by AC or DC power sources and can be controlled by various types of controllers, such as programmable logic controllers (PLCs) and human-machine interfaces (HMIs).
Electric Actuator,Electric Linear Actuator,Electro Hydraulic Actuator,Electric Actuator Valve
WUXI KVC-VALVE , https://www.kvgatevalve.com