Welding electrodes commonly used in pressure welding

Pressure welding is a welding method that forms a strong connection between metal atoms by applying pressure (which may be accompanied by heating). The core principle is applying pressure rather than melting the base material. It includes various types such as resistance welding, friction welding, and ultrasonic welding, and is widely used in construction, automotive, electronics, and other fields.

Common types:

Resistance welding: Uses the resistance heat generated by current passing through the contact surface for welding, such as spot welding and seam welding.

Friction welding: Generates heat through rotational friction, and then applies pressure to complete the welding.

Ultrasonic welding: Uses high-frequency vibration to generate frictional heat for connection, suitable for precision electronics.

Electroslag pressure welding is one type, used for vertical rebar connections, where the welding flux is melted by current to form a joint. During construction, attention should be paid to details such as rebar rust removal and uniform weld bead.

Commonly used welding electrodes for pressure welding mainly include carbon steel electrodes (such as E4303/J422, E5015/J507), low-alloy steel electrodes (such as E5515-G/J557), and stainless steel electrodes (such as A132). The selection should be based on the base material and welding requirements.