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Qingdao Antai Import and Export Co.,Ltd

Manufacturing steps of ductile iron castings

1. Ductile iron parts to be strict with its chemical composition, the original iron liquid requirements of carbon and silicon content than gray iron high, reducing the nodular cast iron manganese, phosphorus, sulfur content;

2. Iron liquid is higher than gray cast iron to compensate for the ball, the loss of molten iron temperature during inoculation;

3. The ball treatment, that is, to add a spherical agent to the molten iron;

4. Inoculation with Inoculant;

5. Ductile iron has poor fluidity and shrinkage, so it needs higher pouring temperature and larger gating system size, reasonable application of riser, cold iron and sequential solidification principle;

6. Suitable heat treatment for ductile iron castings.

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