Black Annealed Wire

The black annealed wire is black iron wire drawn from Q195 type wire rod. After selecting the raw material, it is calcined at a high temperature of about 1000° for a sufficient time, and then cooled at an appropriate speed. The purpose is to reduce hardness, improve machinability; eliminate residual stress, stabilize size, reduce deformation and crack tendency; refine grain, adjust structure, and eliminate structure defects. It is softer and more flexible than ordinary black iron wire, with uniform softness and consistent color. Mainly used in nail making, binding, clothes hanger making, construction, mining, chemical industry, welding mesh, welding clothes hanger, reprocessing, etc.

The quality of annealed wire depends on the quality of the annealing process, the annealing process to do a good job, the quality of the annealed wire is good, then the annealed wire annealed for the purpose of what exactly is it? Here we look at it together:

(1) Reduce the hardness of the wire, improve the cutting processability;

(2) Eliminate residual stress, stabilize the size, reduce deformation and cracking tendency;

(3) Refine the grain, adjust the organization, and eliminate organizational defects.

(4) Uniform material organization and composition, improve material properties or make organizational preparation for future heat treatment.