Stochastic optimization during preparation of the basis for the coating

Surface preparation for coating involves the creation of a certain roughness of the substrate. This is necessary to ensure proper adhesion. Substrate processing generates a surface microrelief, that increases the substrate surface and the adhesion strength. A high unit cost of some coatings materials substantially limits its thickness. In this case, the main criterion is the cost of the coating layer volume, including the material in the scratches of the substrate. The formulation of the problem of substrate machining operations optimization to maximize the area of the contact with the coating and minimal consumption of materials, taking into account the stochastic characteristics of the tool geometry is described in the paper. The described method allows on the design stage to optimize substrate technological machining operations to maximize the area of contact with the coating and the minimum consumption of materials, taking into account the stochastic characteristics of the tool geometry.

Multiobjective optimization, roughness, density distribution