u Equipment operation simple work efficiency high, lifting swing, feeding, positioning, impact, placing are all controlled by computer, using thermal balance principle and cyclic stirring, to reach the automatic uniform cooling and constant temperature of the sample, temperature adjustment are electrical automatic control, equipped with dedicated sample feeding device automatic feeding, sample automatic end face positioning, ensure the sample comes out to impact time not greater than 2 seconds, meet metal low temperature Summer impact test method, especially suitable for continuous impact testing labs and a large number of impact testing metallurgy, machinery manufacturing and other industries.