The department may make loans to the owner of such securities for relief and welfare purposes which loans shall be secured by pledges of the securities to the state. The department may by rule establish the purposes for which loans may be made, permissible interest rates and fees, time and manner in which the loan is paid out, time and manner of repayment, general procedures to be followed in making loans, the action which shall be taken if a borrower defaults on a loan, maximum amount which may be loaned to any one borrower, and any other rules necessary to carry out the purposes of this section.