The Hitchiner Process

The Hitchiner casting process is a variation of chemically bonded sand moulding processes. Hitchiner casting process uses a counter-gravity (vacuum) system to fill the mould cavity with molten metal. The flask is partially submerged in a metal bath. Small diameter feeders in the drag (bottom) half of the flask are used to draw metal under vacuum into the mould cavity. Filling moulds by gravity (i.e. by pouring into a sprue) can introduce air into the mould cavity and result in defects. Introduced air can constitute up to 30% of the total volume of metal poured. The Hitchener casting process achieves better filling consistency and virtually eliminates air ingress and the resulting inclusions and porosity defects. This has been shown to reduce casting repair costs by 50-65%. Such cost savings can compensate for the higher up-front costs.

Advantages of The Hitchiner Process

Limitations of The Hitchiner Process