WIRE Tin-tin bronze BrOTs4-3

摘要

The invention relates to the field of ferrous metallurgy, namely - to the production of wire 0,1-8,0 mm in diameter, made of tin-zinc bronze BrOTs4-3 and intended for the manufacture of elastic elements in the critical electrical connectors. The object of the technical solution is to achieve the following values ​​of mechanical properties of the wire depending on the diameter: tensile strength 844-961 MPa, 1.4-2.5% elongation, furthermore, the wire should fully withstand the winding under RF standard. The problem is solved in that the wire is subjected to thermal-processing of mode: before each not less than the last three passes of drawing is carried out low-temperature annealing at 220-240 ° C and holding 0.75-1.0 hours, each of the three last drawing passes performed partial relative reduction in the range of 20-31%. Conducting thermal-processing wire BrOTs4-3 bronze for developed and tested in industrial batches regulation provides meet the stringent requirements of the standard mechanical properties and test winding, which allows successful use wire to a specified destination.