The hard coating CrN (chromium nitride) is a type of surface coating widely used in the manufacturing industry, automotive industry, oil and gas industry, aerospace applications, and other industrial applications. The adhesion strength of the CrN hard coating to the SKD11 steel substrate is an important property determining the applicability of the coating and is determined by the method and technological parameters during the coating process. The content of this study investigates the influence of gas flow rate, pulse frequency, substrate temperature on the adhesion strength of the CrN hard coating to the SKD11 steel substrate created by the pulsed DC sputtering method.