Copper bar continuous extrusion short process production method

Abstract

The invention provides a copper bar continuous extrusion short process production method. The copper bar continuous extrusion short process production method comprises the following steps of selection of a round copper bar: selecting the round copper bar of which the copper content is 99.95% as a base material; extrusion of the base material: driving the base material into a cavity of a mold under the friction effect of a driving wheel to perform moulding deformation extrusion to obtain a profile; cooling of the profile: cooling down the extruded profile in a cooling kiln in a segmented manner under the protection effect of nitrogen; and rolling: storing the profile which is cooled down to normal temperature in a rolling manner. By the method, the round copper bar is driven to the mold under the friction effect of an extrusion wheel and is extruded continuously, and the copper profile is formed finally. Suitable mold orifices are designed according to different production requirements, and then various special-shaped materials can be produced and machined.

Description

technical field [0001] The invention relates to a production method for producing metal plates, wires, pipes and profiles in a non-rolling manner for operation and transportation, especially a short-process production method for continuous extrusion of copper bars. Background technique [0002] Copper bars are mainly used on primary lines (copper bars are used for high-current phase wires, neutral wires, and ground wires), and copper bars are used to connect primary components with large currents on electric cabinets, such as a row of electric wires. The main busbar is connected between the cabinets, and the main busbar is distributed to the switch electrical (isolating switch, circuit breaker, etc.) of each electric cabinet is the branch busbar. There are tin-plated copper bars and bare copper bars. Generally, tin-plated and embossed treatment or conductive paste is added to the connection of copper bars in the electric cabinet. There is a heat shrinkable sleeve for protec...

AI Technical Summary

Problems solved by technology

[0003] Traditional copper bar production usually includes the selection of round copper rods, stretching into suitable round copper rods, rolling into trapezoidal cross-sections, annealing, two transition stretches, re-annealing, rough drawing, and fine drawing. Due to traditional process operations There are many complex processes, which often cause the following defects in the copper bar. Since the annealing is a well-type annealing kiln, the upper, middle, and lower parts of the same furnace material, and the inner and outer rings of the same rolling material are inconsistent in hardness, which makes the mechanical and physical properties of the product Inhomogeneous performance, mainly manifested in the uneven hardness of copper bars after fine drawing, inconsistent wear after contact between copper bars and carbon, and high noise