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Problem with Aluminum extrusion

I have a problem in removing Aluminum after hot extrusion, from the Die tool. Now I immerse the die tool in Caustic soda solution for 3-4 hours then I go for laborious work like chipping etc. which I don't want to got for. Can anybody help me in solving the problem? The die tool is made up of H13 steel.

Sathya Prakash M
Pyro Technologies - Bangalore, Karnataka, India
2002

Add 4 oz/gal Sodium Gluconate to the Caustic Soda Solution.

Robert H Probert
Robert H Probert Technical Services

Garner, North Carolina

2002

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