Acetylene and oxygen are used to separate rough castings that are clustered.
Cutting guns and gas cylinders need to be checked for intactness.Based on the thickness of the ingate/riser,select the appropriate cutting nozzle and adjust the air pressure of acetylene and oxygen. While cutting,check the the ingate from time to time so that the effective part is not cut off.The cut faces should be neat. The ingate remains should be adjusted to the dimensions of the castings.Cut the riser/runner basin off the cloverleaf coupon(which is used to test the mechanical properties of the material )and divide the cloverleaf into four identical parts （test bars）. The castings and their test bars are then transferred to next production procedure.All the ingates/risers that are cut off are sent to the charging material area for smelting next time. Put away all the tools when work is done.