The core making section is responsible for sand core preparation in the production process of ductile iron pipes.

Core sand preparation - sand core shaping - sand core external spraying - sand core storage

The core preparation of Jin Steel Casting Industry adopts the automatic core injection technology of cold core box blowing amine, which can achieve high-precision control of various process parameters, including raw material temperature, ratio, dosage per batch, sand injection time, exhaust time, blowing pressure, amine blowing amount and gasification temperature, mold opening and core taking, all of which are under automatic program control.

Preparation of Core Sand

1. Core making sand is stored in a sand bin for use in core making.

2. The air compressor under the sand silo extracts the air, and the sand is transported to the sealed silo through the sand escort.

3. Sand and resin are mixed in automatic sand mixing equipment.

Sand core shaping

Sand core external spraying

The operator controls the robotic arm to remove the sand core and move it into the water-based coating spraying pool for fully automatic external spraying of the sand core.

Storage of sand cores

After spraying, place the sand core into the core frame. Stack according to different specifications in the sand core storage area.