TiN-coat-coated mold
A coating and mold technology, applied in the field of ion coating molds, can solve the problems of reducing the mechanical properties of the coating, the coating quality is difficult to control, and the coating has many pores, so as to improve the internal fracture mechanical properties, easy to promote, and fracture toughness big effect
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Embodiment 1
[0025] The preparation of embodiment 1 coating
[0026] The preparation process of the coating is divided into four stages: preparation of TiN agglomerated powder, mold surface pretreatment, spraying parameter optimization, and spraying. The steps of the four stages are as follows:
[0027] (1) preparing TiN agglomerated powder;
[0028] (1-1) Atomize TiN powder with a powder particle size of 1-5 μm as a raw material;
[0029] (1-2) Mixing the atomized TiN powder and binder into the agglomeration equipment for agglomeration, drying the agglomerated powder, and granulating;
[0030] (1-3) passing the agglomerated powder through a -200 mesh to +400 mesh powder sieve to obtain a TiN agglomerated powder with a particle size of 40-80 micron micron spherical agglomerates.
[0031] The powder includes atomic fractions of Ti-72% and N-28%, and after agglomeration, spherical agglomerates with a particle diameter of 40-80 μm are formed.
[0032] (2) Mold surface pretreatment;
[003...
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