Preparation method of electrical busbar using high-quality aluminum ingot as raw material
A busbar and aluminum ingot technology is applied in the field of preparing aluminum and aluminum alloy busbars for electrical purposes, which can solve the problems of high production cost, long process flow and low yield, and achieve high production efficiency, high conductivity and high yield. Effect
Inactive Publication Date: 2017-02-08
STATE GRID SHANDONG ELECTRIC POWER +1
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Problems solved by technology
The traditional production process of aluminum and aluminum alloy bus bars is melting and casting-heating-extrusion-rolling-straightening. This process mainly has the disadvantages of long process flow, high energy consumption, low yield and high production cost.
Method used
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Embodiment Construction
[0017] The process scheme adopted by the present invention is as follows: ① Upward continuous casting of aluminum and aluminum alloy rods; ② Continuous extrusion of aluminum and aluminum alloy busbars; ③ Stretching.
[0018] ① Upward continuous casting aluminum and aluminum alloy rods.
[0019] Using high-quality aluminum ingots as raw materials, melting and heat preservation at 710 ° C ~ 730 ° C, and through the online degassing device, the aluminum and aluminum alloy melts are stirred and degassed, and the aluminum and aluminum alloy rods are drawn up by the clutch type vacuum of the traction unit .
[0020] For the online degassing and stirring, 99.996% argon or nitrogen is filled into the aluminum and aluminum alloy melt through the online degassing and stirring device, and the metered argon or nitrogen is transferred through the controlled rotating graphite shaft and rotor. Nitrogen is injected into the melt of aluminum and aluminum alloy and dispersed into tiny bubbles,...
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Abstract
The invention discloses a method for preparing buses for electrical engineering through taking high-quality aluminum ingots as a raw material. The method comprises the steps: (1) carrying out up-drawing continuous casting to form aluminum and aluminum-alloy rods, wherein the high-quality aluminum ingots are taken as a raw material, melting and heat insulation are carried out at the temperature of 670-750 DEG C, an online degassing and stirring device is used for stirring and degassing melt, and a drawing unit is used for carrying out clutch type vacuum up-drawing on the aluminum and aluminum-alloy rods; (2) carrying out continuous extrusion to form aluminum and aluminum-alloy buses; (3) drawing. According to the aluminum and aluminum-alloy buses prepared by adopting the steps, R-state buses have the elongation percentage higher than 25% and the tensile strength higher than 75MPa, and Y-state buses have the elongation percentage higher than 4%, the tensile strength higher than 120Mpa and the electric conductivity not lower than 62% IACS. The method has the advantages of high efficiency, energy saving, high yield, high production efficiency, high product electric conductivity, excellent mechanical properties and the like.
Description
[0001] The present invention is a divisional application of an invention patent application with the application number 201310061628.8, the application date is February 27, 2013, and the invention title is "a production process of aluminum and aluminum alloy busbars for electrical purposes". technical field [0002] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a method for preparing aluminum and aluminum alloy busbars for electrical purposes. Background technique [0003] The bus bar refers to the connection of voltage distribution devices at all levels in the substation, as well as the connection of electrical equipment such as transformers and corresponding power distribution devices. Most of them use bare or stranded wires with rectangular or circular cross-sections. The function of the busbar is to collect, distribute and transmit electrical energy. Busbars mainly include copper and copper alloy busbars, alumin...
Claims
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IPC IPC(8): B21C37/04C22F1/04C22F1/043C22C21/00C22C21/02
CPCB21C37/045C22C21/00C22C21/02C22F1/04C22F1/043
Inventor 孙涛单世河刘金才陈衍全陈强陈春花张丽侯正荣刘秀娟朱存革陈成宾牛留索张璐
Owner STATE GRID SHANDONG ELECTRIC POWER