Preparation technology of energy-saving aluminum wire
A preparation process and energy-saving technology, applied in the direction of wire drawing dies, etc., can solve the problems of large energy consumption, long production cycle, and large energy consumption, and achieve the effects of reducing production costs, improving mechanical properties, and improving production efficiency
Active Publication Date: 2014-04-23
STATE GRID CORP OF CHINA +2
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Problems solved by technology
A large amount of heat is wasted through water and other media during forced cooling, and a large amount of energy is consumed again during heat treatment, resulting in large energy consumption, long production cycle, low production efficiency and high production cost
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[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0032] We know that the finer the grains in the aluminum wire structure, the higher the tensile strength and the better the toughness. The size of the grain is related to the solidification and cooling speed of the aluminum liquid, the faster the speed, the finer the grain. In addition, the size of the grains is also related to the deformation rate during the phase transformation process. The greater the deformation, the more the grains are broken, and the final grains formed are finer. However, when the cooling rate is too fast, some alloying elements will solidify into the aluminum matrix, reducing the electrical conductivity. In order to precipitate the second phase formed by these alloying elements, the aluminum rod needs to be heated. After the second phase precipitation is completed, the aluminum rod is cooled again to obtain a...
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The invention discloses a preparation technology of an energy-saving aluminum wire. The preparation technology is carried out by the following steps: firstly, cooling for the first time; drawing and cooling molten aluminum inside a smelting furnace through a mold feeding cavity of a mold feeding heat yoke, a mold drawing cavity of a mold drawing heat yoke, and cold bodies of at least one group of first heat pumps orderly, so as to finish the first cooling; returning an aluminum bar formed in a drawing manner to finish further heating and drawing after orderly passing through hot bodies of at least one group of second heat pumps, hot bodies of the first heat pumps, a hard waste hot-drawing cavity of a mold drawing heat yoke and a hard waste heating cavity of the mold feeding heat yoke; quickly cooling and drawing the aluminum wire after cooling by cold bodies of the second heat pumps, and forming a qualified aluminum wire, so as to finish second cooling. The on-line thermal treatment on the aluminum wire is carried out by adopting liquid aluminum solidification and heat generated during aluminum rod cooling by adopting a hot yoke method, residual heat of a aluminum rod and the aluminum wire is extracted to the maximal extent for preheating in the thermal treatment of the aluminum wire by adopting the principle of the heat pumps, an energy source is saved, the production efficiency is improved, and the production cost is reduced.
Description
technical field [0001] The invention relates to a process for preparing aluminum wire. Background technique [0002] Compared with copper, aluminum is widely used as a material for overhead wires and cables of transmission lines due to its high surface content, low price, low density, and better conductivity than copper. In order to increase the flexibility of wires and cables, Aluminum wire twisted structure is usually used. The preparation of aluminum wire usually requires multiple processes such as smelting, aluminum ingot, heat treatment, aluminum rod making, reheat treatment, wire drawing, and so on. Among them, in order to promote the phase transformation and refine the crystal grains, forced cooling with water and other media is required. A large amount of heat is wasted through water and other media during forced cooling, and a large amount of energy is consumed again during heat treatment, which leads to large energy consumption, long production cycle, low product...
Claims
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Login to View More IPC IPC(8): B21C1/02B21C3/02B21C9/00C22F1/04
Inventor 冯砚厅
Owner STATE GRID CORP OF CHINA