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บทความ เกจวัดแรงดัน

WEIR MINERALS APPLIES CASTING INNOVATION AT ISANDO PLANT

Driving down part turnaround time whereas enhancing high quality and lowering waste is being achieved at Weir Minerals Africa’s thrilling new Replicast Plant in Isando, Gauteng.
Umar Smith, plant supervisor at Weir Minerals Africa’s Isando facility, highlights that the progressive development allows the company to supply more elements at a time – and extra quickly. This will help in meeting rising customer demand, while also lowering rework and wastage.
“As part of our Project Vuka, this new plant permits us to solid multiple small elements per batch rather than simply one by one,” says Smith. “We can also cut back our knock-out instances from days to just a few hours.”
The state-of-the-art facilities enable Weir Minerals Africa to solid excessive chrome parts weighing up to 250 kg. There are two phases to the new process, he explains, which makes use of polystyrene to create moulds. The first part is the polystyrene moulding course of, which occurs after the polystyrene beads have been expanded. The second section is where the ramming, pouring and demoulding takes place.
In contrast to the traditional moulding line – where resin and catalyst are used to bind sand – the Replicast Plant makes use of silica sand of 30-35 AFS grade together with the polystyrene mould, he says. The system involves a vacuum bin, from which all the air is eliminated to compress the sand.
“The absence of resin and catalyst – in addition to having no clamping course of – results in less scrap being produced, and therefore brings operational financial savings,” he says. “The high quality of castings can be raised, with a better surface end and fewer defects.”
He notes that the geometrical stability of components is improved, as there may be less fettling of the completed product thereby lowering dimensional variation between the same parts. เกจวัดแรงดันน้ำมันเครื่อง in turn contributes to the reliability of the tools using those elements. He says the foundry may even realise significant environmental advantages on account of using no chemical substances in the sand.
“This new plant aligns well with our company sustainability goals, guaranteeing that our processes are not only compliant however repeatedly reduce our environmental impression,” says Smith. “Our new moulding systems be certain that fewer gases are emitted through the casting process, and there are zero emissions of harmful substances similar to benzene.”
The new technology can be leading to much less frequent disposal of silica sand, and the sand itself is extra environmentally pleasant because it contains no resin or acid.
“A remarkable side of growing this new plant was the reality that it was accomplished with our local skills and largely during the COVID-19 lockdowns,” he says. “Despite the novelty of this technology, and the logistical challenges created by the pandemic, it was successfully applied on time and inside budget.”
The plant consists of more than sixteen,000 particular person elements, and makes use of over 1,900 m of cabling, 300 m of water piping and 55 tons of metal.
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