Vibrating conveyor for the welding parts structure, the body material used in all high-quality steel plate, the X-ray inspection, welding without defects, strong, resistant to vibration, no welding cracks and scattered phenomenon, sand machine bed and the upper sand frame welding After forming the whole into the heat treatment furnace by 500 ℃ insulation 6 hours tempering to stress treatment, and then from 150 ℃ ~ 200 ℃ insulation 48 hours when the qualitative treatment.