News Descritpion
  • Mould prevention in the process of heat treatment deformation occur
  • Date:2015-11-04    From:    Click:747
  • 1, on the premise of ensuring that the mold hardness, as far as possible with precooling, hierarchical cooling quenching or temperature quenching process.

    2, changping heat treatment recommendations. The complex precision molds, in situations where conditions permit, nitriding heat treatment plant suggested that as far as possible by vacuum heating of cryogenic treatment after quenching and tempering.

    3, for some sophisticated mould can be used in advance, aging heat treatment, conditioning heat treatment nitriding heat treatment to control the precision of the mould.

    4, nitriding heat treatment plant in repairing mold sand holes, porosity and the defects such as wear and tear, ***ion of cold welding heat affected small repair equipment such as to avoid any deformation in the process of repair.

    Thickness of 5, the die structure design is reasonable, not too wide, shape is symmetrical, experts say, the deformation is mould to master the deformation law of machining allowance, reserved for large, complex precision mould can use composite structure.

    6, sophisticated mould for soft nitriding in advance to eliminate residual stress generated in machining process.