Hello,
the friends of WW1 ordnance should know the problem with the 7,6 cm german "leichte Wurfmine" with zinc driving band: The shell is in great condition but the driving band is nothing more than white zinc oxide powder. This happens because of electrochemical reaction between the zinc and the iron especially in wet ground. The zinc is acting as an anode. Same method is used on ships to prevent rust on the hull in agressive salt water.
So I decided to start a new project of "casting new zinc driving bands"
So first I'll show one of the patient's:
PS: I am not sure about some technical terms. If I am totally wrong I would be happy if a Moderator may correct them.
the friends of WW1 ordnance should know the problem with the 7,6 cm german "leichte Wurfmine" with zinc driving band: The shell is in great condition but the driving band is nothing more than white zinc oxide powder. This happens because of electrochemical reaction between the zinc and the iron especially in wet ground. The zinc is acting as an anode. Same method is used on ships to prevent rust on the hull in agressive salt water.
So I decided to start a new project of "casting new zinc driving bands"
So first I'll show one of the patient's:
PS: I am not sure about some technical terms. If I am totally wrong I would be happy if a Moderator may correct them.
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