▎ 摘　　要

NOVELTY - This utility model relates to mould technology area, especially to sample mould for spectral analysis of liquid metal chemical composition, comprising a concave die, wherein the die bottom is set with the base plate, a concave die is set with upper die of model cavity through the lower two end face, this utility new type of die is integrated, sample would not show composite mould and burr, hand part protecting the checking personnel, and surface of the cavity forming one layer graphene nano thin film, can large pole of mould cavity surface enhanced machine performance, and can make rapid heating or cooling mould, increase sample quality, and prolong the mould life, the other concave mould is set with the cooling water in the spiral cooling pipe, spiral cooling pipe spiral around in cavity outside, using sample detection location chilling and white mouth, increase of the success rate.