On the premise of ensuring the hardness of tableware molds, try to use pre cooling, graded cooling quenching, or warm quenching processes as much as possible. Let's take a look at the prevention of deformation in tableware molds during heat treatment.
Changping heat treatment recommendations. For precision and complex molds, if conditions permit, nitriding heat treatment plants recommend using vacuum heating quenching and deep cooling treatment after quenching as much as possible.
Pre heat treatment, aging heat treatment, and quenching and tempering nitriding heat treatment can be used to control the accuracy of some precision and complex molds.
When repairing defects such as sand holes, air holes, and wear on molds in nitriding heat treatment plants, cold welding machines and other repair equipment with minimal heat impact are selected to avoid deformation during the repair process.
The design of the mold structure should be reasonable, with no significant difference in thickness and symmetrical shape. Experts suggest that for molds with large deformations, it is necessary to grasp the deformation rules and reserve machining allowances. For large, precise and complex molds, composite structures can be used.
Precision and complex molds require pre nitriding to eliminate residual stresses generated during mechanical processing.
