What is pin brazing system?

Pin brazing is a simple, metallurgically safe method for making electrical connections to steel and iron pipelines as well as other metallic structures. It is used in cathodic protection systems in which electricity is used to protect the substrate from corrosion.

How does pin brazing work?

The specially made pin brazing unit is extremely lightweight welding equipment. When you press the trigger of the pin brazing gun, you complete a electrical circuit where DC current is released. The resulting charge melts the flux within the brazing pin and solders the connection between the two metal objects.

What is the process of brazing?

Brazing is a metal-joining process in which two or more metal items are joined together by melting and flowing a filler metal into the joint, with the filler metal having a lower melting point than the adjoining metal. The filler metal flows into the gap between close-fitting parts by capillary action.

How do you put a brazing pin in a stinger?

Hold the cable lug or stinger flat on the steel surface (for direct pin connection). Insert a loaded brazing pin into the hole in the lug and press the gun/ferrule against the surface of the lug evenly overcoming the internal spring. Turn the ferrule holder until the white adjustment indicator tube is flush with the gun’s rear face.

How is pin brazing used to prevent corrosion?

It is an effective method of preventing stress corrosion cracking. Pin brazing easily attach the electrical cable connection over the joints, such as in the case of application of cathodic protection system to a pipeline with spigot and sleeve joints. It gets brazed at both the spigot and sleeve ends of the pipe and the cable attached.

What kind of pins do you use to braze steel pipes?

In case of pipes of ductile or cast-iron, one goes for threaded brazing pins application where a prefabricated cable with nuts is fastened. As for steel pipes, pin brazing either in the form of threaded brazing pins with nuts or cable is used.

Can a pin brazing system be used vertically?

Within a CP system there are a multitude of connection requirements for anode cables, measuring posts etc, being extremely versatile, the pin brazing system is ideally suited to this. Attachments can be made vertically, horizontally or even overhead.