A new approach for the determination of technological parameters for hydroabrasive cutting of materials

A method for the design of a technology for the abrasive waterjet cutting of materials is based on the determination of the constant of cuttability of materials using an abrasive waterjet K-awj according to four different versions. Version A, where three deformation parameters are measured on the test cut/sample, namely selected depth h(x) [mm], local roughness Ra-x [mu m] at depth h(x) and local deviation of the cut trace from the normal plane Y-retx at depth h(x). Version B, where merely two deformation parameters are measured, namely the reference depth het [mm] and deviation of the cut trace from the normal plane Y-retx [mm] or, according to version C, where one parameter is mearured, namely either the ultrasonic wave speed v(LUZ) [m . s(-1)] or Young's modulus E-mat [MPa]; K-awj being calculated from relevant deformation parameters. The last option is version D, where the design of the whole technology is carried out by calculation of K-awj according to the Young's modulus E-mat or according to the ultrasonic wave speed vLUZ of the cut material.