I used these instructions for a Wok and it never rusted could work for your pan
Just purchased a new wok? It needs to be 'proved' before cooking commences. 'To prove' a wok is the process that makes it non-stick and protects it from oxidisation (rusting)
Method:
Place 2 - 3 ladles (approx 300-500ml) of vegetable oil in your wok. Place the wok over a high heat. As the metal heats gently rotate the wok so that the oil comes into contact with all of its surfaces. Your new wok should begin to turn black / gun-blue. Once the wok is black / gun-blue turn off the heat, allow the oil to cool completely (wait 30-60 minutes) before discarding or recycling.
Your wok is now 'proved' and ready to use
(A word of caution; once the oil begins to smoke reduce the applied heat. If you continue to heat oil well past the smoking stage it will reach its 'flash point', the point wherein it combusts. So for those of you who are accident prone, please keep a fire blanket nearby!)