Beneficial Effect of Pre-Hardening of Elements Manufactured by the SLA Technology

In this work the effect of preliminary curing on mechanical, physicochemical and tribological properties of SLA (Stereolithography Appearance) manufactured samples is presented. Three preliminary curing times of 5, 10 and 15 s were selected for SLA manufacturing. The materials' friction, hardness and capacitance values were determined by ball cratering, Brinell method and electrochemical impedance spectroscopy, respectively. The obtained results showed that the mechanical property values changed most significantly after 10 s of preliminary curing, but friction wear and electrochemical capacitance showed greatest change for samples cured for 15 s. This effect may be explained by the domination of elongation of molecular chains in the first 10 seconds of preliminary curing and the gradual increase of branching processes during the next 15 s.

Automated summary

This work investigates the effects of preliminary curing on the mechanical, physicochemical, and tribological properties of SLA manufactured samples. The results showed that the mechanical properties changed significantly after 10 seconds of preliminary curing, while the friction wear and electrochemical capacitance showed the greatest change after 15 seconds of preliminary curing.