Cold wire drawing is also called cold drawing low carbon steel wire.Cold drawn low carbon steel wire for construction is divided into a and B levels.Grade a steel wire is mainly used for pre-stress capacity of small prestressed concrete components steel; grade B steel wire is generally used for welding or lashing skeleton, mesh or stirrups.Cold wire drawing is mainly used for small prestressed concrete components, such as volume, hollow floor, small poles, as well as in rural construction purlins and door frames, window frames and so on.
Cold wire drawing after appropriate heat treatment or cold drawing hardening, with high strength and hardness, high elastic limit and fatigue limit (especially the gap fatigue limit), cutting performance is acceptable, but the welding performance and cold plastic will poor performance.Due to the high carbon content, water quenching is prone to cracking, so the use of double liquid quenching (water quenching + oil-cooled), small cross-section parts more oil quenching.This type of Steel is generally used after quenching by tempering or surface quenching.Mainly used in the manufacture of spring replacement wear parts.Carbon tool steel is basically not to join the alloying elements, then high-carbon steel wire, tool steel wire is low cost, good cold and hot workability, a wider range of steel.Spring steel wire includes high carbon steel wire, high carbon steel wire is one of the spring steel wire.Who can do the spring can be called spring steel, and high carbon that is the high carbon content.
