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ALUMAG 235

Unitor ALUMAG 235 is used for welding pure aluminium, seawaterresistant aluminum and cast aluminium.

Clean the joints and adjacent surfaces thoroughly. Use a stainless steel brush, not an ordinary steel brush which will rub iron oxides into the aluminum and contaminate the weld pool. Cast aluminum should be preheated to approximately 300°C. Make sure that pre heated cast components are well supported, so that they do not sag when the temperature rises. Cast alloys that have been pre-heated must be allowed to cool slowly after being welded.

TIG (GTAW) welding

For TIG welding of aluminium it is necessary to use an alternating current (AC) power source. AC is required to break the oxide layer on the aluminium surface.

Repair of aluminium cover plate.

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