1. In the first case, your idea is right, and the lower concept destroys the novelty of the upper concept (assuming the defendant is in front).
2. The second case can't be recovered. It is obvious that iron can conduct electricity, which is not creative, but novel. If the controlled metal plays other roles besides conducting electricity, such as strengthening, arcing, etc. At this point, I think there is no infringement.
The above opinions are for discussion.