The Use of Cold Spraying and Micro-Arc Oxidation Techniques for the Repairing and Wear Resistance Improvement of Motor Electric Bearing Shields

Reliability is one of the most important requirements for electric motor installations. Bearing assembly a common source failure motors. One main reasons such failures wear bearing seat end shield. This paper presents combined technology increasing durability bores shields made aluminum alloys. The technological concept that worn-out end-shield bore firstly restored by supersonic gas-dynamic spraying, and secondly, in order to improve anti-wear properties, it strengthened micro-arc oxidation. adhesion coatings has been studied, resistance formed evaluated. Based on performed studies, can be assumed service life an spraying with novel oxidation real operating conditions will increase average 3–4 times. developed recommended repair, maintenance, or other technical services dealing restoration hardening parts.