Nadfas Grant recipient Cecilie Robinson has just returned from a five day visit to Sheffield Forgemasters International, which is a massive industrial metalworking business and the biggest foundry in the UK. Sheffield Forgemasters make vast component parts for things like offshore oil rigs, submarines, ships and nuclear power stations. They have a whopping 800 strong team of people working a 24 hour operation with three rotating shifts.
Cecilie spent time in the pattern shop, where the scaled up drawings are turned into vast wood and filler patterns, then in the foundry where the team make sand moulds on a huge industrial scale. Cecilie had a go at welding with their team too, where she experimented with various rods – and modestly admitted she did “pretty well!”
Cecilie also visited the meltshop where recycled steel is melted down and elements are added to it. The day she was there they were making stainless steel components for a nuclear project. Pouring from a furnace into two 104 tonne ladles. The team at Forgemasters use computer programmes to simulate these pour processes, and their technicians can predict where issues will occur, such as problematic differences in cooling rates, air bubbles etc.
Then 12 hours later (late at night) these molten ladles were poured into the mould. This was apparently then going to take up to twelve weeks to cool and set! Ultrasound is used to indentify impurities in the casting which are then gouged out and rebuilt where necessary.
Amazingly the Forgemasters foundry is on a different site to the melt shop so the molten steel has to be transported on a flat bed lorry prior to the pour which is huge feat of logistics in its own right. Sometimes they pour up to six ladles per project. The whole experience was a real eye-opener and really worthwhile. Our thanks to the team at Forgemasters International for showing Cecilie around their impressive set up and making her feel so welcome.