High-Strength Bolts & Screws for Electromagnetic Stirrer (EMS) Systems
| Parameter | Value / Range |
|---|---|
| Thread Sizes | M6 – M30 (customizable) |
| Lengths | Customizable per application |
| Thread Standard | Metric (ISO) or Imperial (UNF/UNC) – customizable |
| Surface Finish | As-machined / Passivated / Custom |
| Grade | Compliant with SAE AS7477 / AS4506 specifications |
Non-magnetic fasteners – including bolts, screws, and studs – are critical components in the assembly of non-magnetic roller sleeves used in electromagnetic stirrer (EMS) systems for slab continuous casting machines (CCM). These fasteners secure the roller sleeve structure while maintaining the non-magnetic integrity required for optimal electromagnetic field penetration.
Unlike standard fasteners that may introduce magnetic interference, our non-magnetic fasteners are precision-engineered from premium alloy materials to ensure that the magnetic field generated by the internal EMS coils remains unobstructed – delivering consistent metallurgical stirring performance.
Material Choice: Manufactured from Alloy A286 (UNS S66286 / GH2132) , a precipitation-hardenable iron-base superalloy that combines exceptional high-temperature strength with stable non-magnetic properties.
KEY Features:
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✅ True Non-Magnetic Property – Maintains extremely low magnetic permeability even after cold working, ensuring zero magnetic interference with the EMS electromagnetic field.
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✅ High-Temperature Strength – Retains high tensile strength from room temperature up to 700°C (1300°F) , making it ideal for the extreme thermal environment of the secondary cooling zone.
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✅ Oxidation & Corrosion Resistance – Excellent resistance to high-temperature oxidation and corrosion, better than stainless steel 316L grades.
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✅ High Strength & Reliability – Precipitation-hardened to achieve high ultimate tensile strength (up to 160 ksi / 1100 MPa) with excellent stress-rupture properties at elevated temperatures.
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✅ Precision Threading – Manufactured to tight dimensional tolerances with consistent thread profiles for secure, reliable assembly.