An electric welding machine is a piece of equipment widely used in welding processes. It melts metal by generating an electric arc and realizes the connection between metals. Welding machines are widely used in a variety of industrial and construction projects such as manufacturing, repairs, construction and plumbing, etc. This article will introduce the basic working principles, types and uses of electric welding machines.
1. Working principle of electric welding machine
The working principle of an electric welder is based on the generation of an electric arc. When the welding rod comes into contact with the workpiece, electric current passes through the welding rod and the workpiece to create an arc. The high temperature of the arc causes the welding rod and workpiece to partially melt, forming liquid metal. When the arc is extinguished, the liquid metal cools and solidifies, forming a welded joint.
2. Types of welding machines
Welding machines can be classified according to different criteria. According to the mode of operation, electric welding machines can be divided into manual welding machines and automatic welding machines. Manual welding machines require manual operation and are suitable for occasions that require high flexibility and adaptability. Automatic welding machines can realize automated operations through programming and are suitable for large-scale and continuous welding production.
In addition, according to the current type, welding machines can also be divided into AC welding machines and DC welding machines. AC welders produce a stable arc that is suitable for most welding tasks. DC welding machines have better arc control capabilities and are suitable for occasions requiring high-precision welding.
3. Use of electric welding machine
Welding machines are widely used in various industrial and construction projects. In the manufacturing industry, welding machines are used to fabricate various metal structures such as pressure vessels, pipelines, bridges, and ships. In the construction industry, electric welding machines are used for building steel structures and steel bar welding. In addition, electric welding machines are also used in maintenance and repair work to repair and replace damaged parts.
4. Selection and use of electric welding machines
When purchasing a welding machine, you need to choose the appropriate model and specifications based on actual needs. Factors to consider include welding current, welding speed, arc length, electrode material, etc. In addition, factors such as the welding machine's ease of use, reliability, and ease of maintenance also need to be considered.
When using a welding machine, you need to follow safe operating procedures. Operators need to receive professional training to understand the use and safety precautions of the welding machine. During the welding process, attention needs to be paid to preventing safety accidents such as burns and electric shock.
In short, the electric welding machine is an indispensable and important equipment in the welding process. Understanding the working principle, types and uses of electric welding machines will help you make better choices and uses
