Wave strain hardening in combined and additive technologies

BACKGROUND: To ensure the operational properties of machine parts in the technological processes of their manufacture, it is necessary to use strengthening operations. The method of wave deformation strengthening has wide technological possibilities and allows to form a large depth of the modified layer with different uniformity of strengthening. AIMS: To consider the technological possibilities of using wave strain hardening (WSH) in combined and additive technologies. RESULTS: WSH is one of the methods that allows to realize more fully the potential of other strengthening technologies, with which it is used in combined strengthening. The article describes the results of studies of the combined technology, including preliminary wave strain hardening and subsequent chemical-thermal treatment (cementation). It was found that the use of such treatment allows to increase the durability under the action of contact-fatigue loads by up to 2.5 times. The article describes the results of studies of the combined technology, including preliminary wave strain hardening and subsequent heat treatment. It was found that the use of such technology in creating a uniformly modified structure allows to increase the abrasive wear resistance up to 16%, and in creating a heterogeneously modified structure to increase the fatigue life up to 60% or more. The article describes the results of studies of the use of wave strain hardening in additive technologies to improve the strength characteristics of the synthesized metallic material. It has been established that the mechanical properties of samples obtained using wave strain hardening can be increased up to 2.5 times relative to similar properties of rolled products made from the same grade of material. CONCLUSIONS: The obtained research results can be used not only for strengthening critical machine parts at the final stages of their production, but also in additive technologies for producing parts.