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PRODUCTION TECHNOLOGY68 PRODUCTION TECHNOLOGY AAC WORLDWIDE %u2022 3.2025Wandwire Sp. z.o.o., 32-050 Skawina, PolandReady-to-use cutting wires for AAC plantsWandwire specializes in the production of high-quality cutting wires tailored specifically for autoclaved aerated concrete plants. These ready-to-use wires are compatible with a wide range of production technologies, including Hebel, Siporex, Ytong, Aircrete Europe, Hess AAC Systems, Masa WhiteHub, and Wehrhahn machinery equipment. While many AAC plants still produce cutting wires in-house by sourcing steel and assembling components such as nipples, the industry trend is shifting toward outsourcing consumables in order to focus on core production. This shift highlights the growing need for reliable third-party suppliers of AAC cutting wires.Technical requirements and challengesIn AAC manufacturing, cutting wires are used to process %u201cgreen%u201d cakes after they have achieved a specified strength. These wires are typically made from spring steel coil with a tensile strength between 2000%u20132500 N/mm%u00b2. Fixation components such as pressed-on nipples allow the wires to be clamped and pneumatically tensioned within the cutting machinery.Several factors influence the technical specification of the cutting wires, including:%u2022 Type of production technology%u2022 Oscillation methods (if any)%u2022 Hardness of the green cake%u2022 Production recipe%u2022 Velocity of the cutting processThese variables result in unique wire specifications for each plant. However, the fundamental requirements remain the same: cutting wires must be geometrically precise, durable, and maintain consistent quality.In-house wire production is often perceived as beneficial for stock control, immediate quality adjustments, or labor cost reduction. However, in practice, achieving consistent quality is difficult due to fluctuating raw materials, variable operator expertise, differences in nipple quality, and rising labor costs. These inconsistencies often result in wire breakages, increased waste, and unplanned downtime.The role of specialized suppliersWandwire was established in response to recurring issues experienced by AAC plants worldwide, such as reduced product dimensional accuracy, increased downtime due to wire failures, and the high cost of manufacturing varied wire types internally.The production of high-quality cutting wires requires stringent control over raw materials and manufacturing processes. Consistent outcomes are best achieved through standardized procedures: using the same raw materials, trained personnel, precise cutting techniques, controlled pressure application, regular maintenance of equipment, and internal quality testing.Cutting wires, like other consumables such as mould oil or bearings, benefit from specialized production. Given the evolving requirements for wire types, lengths, and surface finishes, relying on in-house production with limited equipment may not offer the flexibility or quality assurance that specialized suppliers can provide.