Heat treating for hammer spring

I am looking for the process to heat treat a piece of steel, making a flat hammer spring for old revolver. Appreciate any help

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2947414:01crwdne2947414:0:

how big is the piece you're trying to heat treat?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0