Expanding Moulds Expanding Moulds used to enlarge mother pipe size to big one in . Expanding moulds is combined by Stainless steel part and Normal steel part. Sine the Reducing part on Expanding mould is important in the full process of expanding,so according to different pipe thickness, Hei yan chooses different stainless steel materials to issue the quality of Pipe diameter enlargement. Leading part used to transit pipe between small diameter to big diameter, so there are not any force, Hei Yan choose 35# or 40# steel as leading part to save cost of Expanding mould.
At end of pipe expanding mould, it is screw connecting type with pipe pole, which will be insert to the Pipe expanding machine. Hei Yan use casting manner to produce Expanding moulds, Hei Yan International offer different sizes with different thickness Expanding mould, Elbow mandrel, Reducer mandrel, Correction moulds to customers.
1. Check whether the pipe and mould connected well,the pipe has good pull strength ,conformity with machine Pull force. And pipe must be weld with mandril by stainless steel 316L rod and keep correct angle
2. Try to avoid crash on the mandril surface, otherwise it will have scratch inside of pushed pipe.
3. Heating different mandril with different suitable temperature,do like this, can ensure mandril using life.
