EuroWire May 2020

Products

▲ Lowmagnetic permeability Bumax 109 screws with silver coating

Bumax supplies `CERN-rated`screws for cancer therapy equipment

equipment. We anticipate supplying our premium high-strength fasteners to many more customers in the future.” Bumax is a specialist manufacturer of stainless steel fasteners in a variety of steel grades that provide safety and reliability in demanding applications. Customers include CERN, ABB, Alfa Laval, Alstom, Vestas and Rolls Royce, and other companies in industries such as marine, automotive, oil and gas, chemical processing, energy, defence, pulp and paper, construction and general engineering. The company is headquartered in Åshammar in Sweden’s steel district, and has o ces or distributors in more than 30 countries on four continents. It is fully owned by the listed Swedish Bufab Group. Bumax AB www.bumax-fasteners.com May 2020 EF 5/47

The customer required a high-strength stainless steel screw with low magnetic permeability that met the CERN 507 standard to fasten all vacuum parts on its new model proton machine, to avoid vacuum leakages and machine failure. Low magnetic permeability is essential for proton machines to not interfere with the movement of protons. “Our customer found that Bumax was the only fastener supplier in the world that was able to manufacture screws to CERN 507 standard,” said Camille Feuillet, business development manager at Bumax. “Bumax was able to fully meet the customer’s requirements by o ering high-strength, low magnetic permeability Bumax 109 screws with silver coating.” Patrik Lundström Törnquist commented, “CERN 507 has huge potential to bene t various advanced manufacturing and high-tech industry applications, not merely medical Bumax managing director

Swedish manufacturer of premium stainless steel fasteners Bumax has won an initial order from a medical equipment customer for 17,000 ultra premium screws for the manufacturing of a new model of proton cancer therapy machine. Bumax was the only supplier able to provide screws that meet the CERN 507 standard, which is required for fastening the vacuum parts of this new type of proton cancer therapy machine. CERN 507 is a new standard for ultra-high vacuum applications for magnetic eld strength stainless steel. Bumax developed the standard together with CERN (the European Organization for Nuclear Research). Proton therapy machines are a major advancement in the ght against increasing cancer rates around the world, as they accurately deliver proton beams to precisely where they are required.

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