▎ 摘　　要

NOVELTY - The utility model claims a selective laser melting graphene coating scraper for local preheating device, comprising a single-side graphene coating scraper, scraper plate, temperature sensor, a position sensor, a heating plate and a grounding device; the scraper splint is provided with two; the upper end of the one-sided graphene coating scraper is fixed on the scraper splint; the heating board is fixed at the single side graphene coating the two ends of the scraper; the temperature sensor and the position sensor are fixed on the lower end of the scraper splint; the single side graphene coating scraper is provided with a grounding device; It is by preheating the metal powder, powder flow ability is improved, and the cavity temperature field distribution uniformity, forming property of the part rising, also increased along with metal powder temperature of the metal powder, improves the production efficiency of the laser absorption coefficient, using single side graphene coating scraper can and the powder feeding cylinder heat preservation and pre-heating moulding cylinder, effectively simplifies the mechanism.