About to stress tempering
  • To stress tempering
  • In order to extend the service life of hot working die, to avoid the early failure of the die cracking, mould should be three times the stress tempering in the production process, mold in the production of 1000-2000 products must do the first stress tempering, 1.5-2 million to second times to stress tempering, 4-5 million to third time to stress tempering!

 Box type furnace  Vacuum furnace