Chin-DeGraves will have two years of eligibility remaining.
Herrington becomes Penn State's first addition out of the transfer portal this offseason.
Fink appeared in just 10 games with the Milwaukee Admirals before getting called up to the NHL.
Levi Haines sets his sights on Final X and the next step in his senior freestyle rise.
Penn State dropped after two straight upset losses.
Penn State went .500 last week in conference play.