Process and equipment for formation of low-plasticity nonferrous metal shaped wire

Abstract

The invention relates to a processing and forming process and special equipment for metal wire rods, which are especially suitable for processing and forming non-ferrous metal special-shaped wire rods with low plasticity and difficult to process. It belongs to the technical field of metal wire processing. The technological process is as follows: A. The round wire is directly swiveled to open the billet. The diameter of the billet round wire should be 140% to 150% of the maximum size of the profile section; B. The processing rate value when the initial billet processing section is approximately circular 15-20%; the processing rate in the middle stage of processing is 10-15%; the processing rate is 8-10% when the profile section is approximate or pre-formed in the later stage of processing; C. The value of the processing rate gradually decreases with the processing process. And the value is more uniform; D. Several annealing treatments should be carried out during the processing; E. Multiple sets of special-shaped forging dies should be loaded and unloaded in the special equipment during processing. Rotary forging processing equipment adopts the method that the hammer head, the special-shaped forging die and the processing material do not rotate, and the roller rotates around the hammer head. The process of the invention improves the deformation uniformity of the special-shaped blank during the processing and molding process of the non-ferrous metal special-shaped wire with low plasticity and is difficult to process, reduces the defects of cracks and cracks in the material due to uneven deformation, improves the yield of the special-shaped material, and the driving force required by the equipment. Small size, low operating cost, long service life of equipment tools and molds, it is a special-shaped wire forming equipment that meets the needs of different batch production.

Description

Technical field: [0001] The invention relates to a processing and forming process and special equipment for metal wire rods, which are especially suitable for processing and forming non-ferrous metal special-shaped wire rods with low plasticity and difficult to process. It belongs to the technical field of metal wire processing. Background technique: [0002] The traditional process of metal profiles is that after the billet is extruded, it can be preformed by drawing and rolling with a three-roller or four-roller drawing die, and then drawn into a finished product through a fixed die for multiple passes. It is made by rolling. It is more effective to use rolling and stretching methods for ordinary materials with good plasticity and good elongation, but for high-nickel lead-zinc nickel copper, dispersion-strengthened copper and other complex components, containing low-melting point phases or intermetallic compounds. This type of material has low plasticity and poor machinab...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned processing of the existing low-plastic and difficult-to-process alloy special-shaped wire rods. Because of the small amount and difficult processing, the rolling method and the drawing method have the disadvantages of low technical and economic indicators, and invent a special-shaped The cold forging process and special equipment for wire processing and forming can improve the deformation uniformity of special-shaped blanks during the processing and forming of non-ferrous metal special-shaped wires with low plasticity and difficulty, reduce the defects of cracks and cracks caused by uneven deformation, and improve the yield of special-shaped wires , the driving force required by the equipment is small, the operating cost is low, the life of equipment tools and molds is long, and the equipment and processes used can meet the needs of different batches of special-shaped wire production

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