Method for manufacturing ultrafine metal fibers

Abstract

The invention relates to a method for manufacturing ultrafine metal fibers, which mainly comprises the steps of: carrying out drawing and compaction on metal micro-wires, then carrying out annealing treatment and adopting down quenching when composite wires exit a heating region; further carrying out the drawing and the annealing link on the composite wires, repeatedly carrying out the operation and carrying out finish drawing till achieving the size and the dimension required by the process; and carrying out electrolytic stripping, cleaning, drying, packaging and storage on the well drawn composite metal wires. The ultrafine metal fibers which adopt the micro-wire bundle cold reducing-diameter drawing technology can achieve 2 mu m and have the advantages of uniform wire diameter, continuous production, low cost, high efficiency and the like; the method utilizes the rapid rise method for avoiding a brittle zone and utilizes the sharp drop method for keeping the high-temperature single-phase tissues of the composite wires, thereby achieving the state of softest composite wires and greatest ductility; and the method solves the problem of matching compression ratio with drawing speed and realizes the purposes of uniform fiber diameter and small coefficient of variation.

Description

technical field [0001] The invention relates to the field of metal processing, in particular to a method for manufacturing ultrafine metal fibers. Background technique [0002] Metal fiber is a newly developed industry in recent years. With the development of society and the improvement of people's living standards, the requirements for environmental standards are getting higher and higher. Metal fiber sintered felt is a kind of porous deep filter material made of stainless steel fiber sintered at high temperature. The minimum can reach 6μm, and the basic material metal fiber for sintered felt with high filtration precision must have an ultra-fine wire diameter, so it is difficult to meet this high-precision requirement with only 6μm; the existing production process of metal fiber is generally as follows: Tube loading, electroplating, drawing, annealing, cleaning, etc., the metal fiber drawn by this process is easy to break, the processing rate of the pass is small, the num...

AI Technical Summary

Problems solved by technology

Metal fiber sintered felt is a kind of porous deep filter material made of stainless steel fiber sintered at high temperature. The minimum can reach 6μm, and the basic material metal fiber for sintered felt with high filtration precision must have an ultra-fine wire diameter, so it is difficult to meet this high-precision requirement with only 6μm; the existing production process of metal fiber is generally as follows: Tube loading, electroplating, drawing, annealing, cleaning, etc., the metal fiber drawn by this process is easy to break, the processing rate of the pass is small, the number of annealing is large, and the chemical elements of the raw material change greatly, so its comprehensive performance is poor