What is the meaning of butt welding machine?

The operation of butt welding machine is to heat two pipe end surfaces to a specified temperature,  then fuse them together by application of certain force. This will develop pressure which causes flow of the melted material, which causes mixing and thus fusion. To joint the HDPE pipes, it requires a butt welding machine to get the job done. When the thermoplastic material is heated, the molecular structure is transformed into an amorphous condition. When fusion pressure is applied, the molecules from each thermoplastic part mix together. As the joint cools, the molecules return to the solid form, the original interfaces are gone, and the fitting and pipe have become one complete unit. A strong, fully leak-tight connection is the result.

What is a butt welding machine?

What should be paid attention to in the use of different types of butt welding machines?

What is the difference between AC butt welding machine and DC butt welding machine application field?

What is a butt welding machine?

The butt welding machine belongs to the resistance butt welding machine series. Broadly speaking, it also belongs to the category of electric butt welding machines.

The upper and lower water-cooled electrodes are used to pressurize, and a large current is applied in a short time to produce nuggets in the electrode pressing part. The low no-load voltage prevents the electrodes from melting and bonding with the base material. A welding process to achieve the welding effect.

In a narrow sense, the electric butt welding machine refers to the electrode manual arc butt welding machine. It belongs to fusion electrode welding (the electrode is used as an electrode and melted and filled to form a weld). The no-load voltage and working voltage are relatively high. High no-load voltage is convenient for arc ignition; high working voltage is convenient for electrode (electrode) melting. And to ensure the weld penetration.

What should be paid attention to in the use of different types of butt welding machines?

Butt welding process According to the working principle of the butt welding machine, the butt welding process can be divided into two types: resistance butt welding and flash butt welding:

Resistance butt welding is to heat the end joints of the steel bar to a plastic state, then cut off the power supply, and then heat to reach the plastic connection. This welding process is prone to oxidation and slag inclusion in the joints, and requires the section of the steel bar to be smooth and flat. At the same time, it consumes a lot of electricity during welding and requires high power of the butt welding machine, so it is rarely used.

Flash butt welding refers to the spraying of molten metal particles from the end joints of the steel bars during the welding process, showing sparks (that is, flashes). While the molten metal is sprayed out, oxides and slag inclusions are also brought out, so that the butt welded joint has good quality, so it is widely used, especially for the butt joint of low-carbon steel and low-alloy steel.

What is the difference between AC butt welding machine and DC butt welding machine application field?

2. There are two types of DC butt welding machines: one is to install a rectifier element under the base of the AC motor, and the other is a DC generator. The DC butt welding machine mainly welds non-ferrous metals and pig iron.

3. The AC welder mainly welds steel plates.

This is all about the butt welding machine! If you would like more information about the butt welding machine, please contact WELPING .