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EPD: Cold heading steel wires (CHQ) (voestalpine Wire Germany GmbH)
Cold heading wires (CHQ) are used to produce parts of complex shapes by means of cold forming operations, using different production techniques, such as cutting, heading, upsetting, extrusion or rolling. This kind of forming process can also be complemented by different machining operations, such as turning, grinding, polishing and others. Bearing steel wires are part of the voestalpine Wire Germany GmbH product range. The properties of these wires are optimized to produce ball, roller, cylindrical and needle bearings. Generally, bearing steels are characterized by good hardenability and high surface hardness, which results in little material abrasion during use. Low-Carbon wires are unalloyed carbon steels with a carbon content of less than 0.25 %. Iron wire is drawn from a non-heat- treated wire rod or is heat treated before, between or after drawing. Free-cutting steel wires are also a part of the voestalpine Wire Germany GmbH product range and are optimized for processing on automated machine tools. Welding wires are used for a variety of products. Depending on the cold working and heat treatment, wire is used to make e.g. wire ropes, barbed wire, wire mesh, nails, but also springs, welded steel mesh and reinforcing wire used. In order to fulfil certain requirements concerning mechanical properties and deformability, specific chemical compositions, as well as optimized production processes are used to produce cold heading, bearing and steel wires.
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