Foundry Virtual Tour – Melting and Pouring
In this article, we look at the next step in the White Industries’ production process; melting and pouring. At the time of writing, White Industries produces 106 different alloys, consisting of various grades including:
STEELS | IRONS | STAINLESS STEELS | NONFERROUS |
---|---|---|---|
Plain Carbon | Grey | Austenitic |
Aluminiums |
Low Alloy | Ductile | Super Austenitic | Bronzes |
High Alloy | Ni- Resist | Martensitic | Brasses |
Ni-Hard | Ferritic | Gunmetals | |
High Chrome | Duplex | ||
Super Duplex |
Given the wide range of materials produced, White Industries employs strict controls to ensure scrap is identified and cross-contamination doesn’t occur. When a melt is programmed for production, a charge is calculated using known steel scrap, runners and risers from previous melts, and ferroalloys. All additions are weighed to ensure the melt analysis is in specification.
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Melting is conducted in one of the five electric induction furnaces, with the scrap steel and returns added by electromagnet. The furnaces capacities are 1 x 150kg, 1 x 750kg, 2 x 2000kg and 1 x 3000kg. Once melting is complete, a sample is taken and analysed on one of the atomic emission spectrometers. A chemical analysis is compared against the specification and adjusted if necessary with ferroalloys.
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