Method for producing bright oxygen-free copper rod

Abstract

The invention discloses a method for producing a bright oxygen-free copper rod. A copper rod manufactured according to a traditional manufacturing method is high in oxygen content. The method provided by the invention comprises the following steps: heating and drying a copper material and then melting; keeping the temperature of liquid copper after being molten in a maintaining furnace; penetrating a copper bar bus through a coating chamber communicated with the maintaining furnace and attaching the liquid copper to the surface of the copper bar, thereby forming a thicker copper casting bar; and cooling, hot-rolling, cooling and coiling the copper casting bar in turn, thereby forming a bright oxygen-free copper rod, wherein the temperature of the maintaining furnace for keeping the temperature of the liquid copper is at 1140-1180 DEG C, the temperature after cooling and before hot-rolling the copper rod coated with the liquid copper is at 600-800 DEG C, and the temperature at the moment of coiling is higher than room temperature but lower than 100 DEG C. According to the method provided by the invention, the manufacturing for the high-quality copper bar with oxygen content at 2-10ppm becomes possible. Meanwhile, a specific oxidation film is formed on the surface of the copper bar according to the method provided by the invention, so that the mutual adhesion phenomenon between wire bars during an annealing process at the coiling moment is restrained. No surface scratch or broken wire is caused during the processing process, so that the bright oxygen-free copper rod with excellent surface state and high quality can be produced according to the method.

Description

technical field

[0001] The invention relates to a method for manufacturing copper rods, in particular to a method for producing bright oxygen-free copper rods. The oxygen-free copper rod manufactured by this method has the characteristics of high conductivity, low oxygen content and high elongation, and is mainly used in wind power, nuclear power, high-speed rail, automobile wires, ultra-high voltage wires and other fields that require high quality copper rods. Background technique

[0002] Wind power is the cleanest and safest power generation technology at present. At present, the development speed of wind power in the world is faster than that of other new energy sources. In the future, wind power is likely to become one of the main sources of global electricity. According to the forecast of China Wind Energy Association, the total installed capacity of wind power in China will reach 8 billion watts in 2020, 18 billion watts in 2030, and 50 billion watts in 2050. The Chi...

Examples

Embodiment 1

[0080]Bright oxygen-free copper rods were fabricated using the equipment shown in Figures 1 to 4 above. The specific method is to put the electrolytic copper plates heated by the drying furnace into the melting furnace in batches, and dissolve them at a temperature of 1160 degrees. The molten copper flows into the holding furnace through the flow channel to keep warm, and keeps warm at a temperature of 1160°C.

[0081] A thinner copper rod busbar is passed through the coating chamber connected with the holding furnace, and copper liquid is attached to the surface of the copper rod to form a thicker copper casting rod. In addition, before the busbar passes through the coating chamber, it is stripped to remove the oxygen-rich oxide layer on the busbar surface.

[0082] Afterwards, the copper rods are sequentially cooled, hot-rolled, and re-cooled. At this time, the temperature of the copper rod covered with copper liquid before entering the hot rolling process after cooling is...

Embodiment ５～７

[0088] When manufacturing bright oxygen-free copper rods, other conditions are the same as in Example 1, except that the processes of attaching molten copper, cooling, hot rolling, recooling, and coiling are repeated as shown in Table 2.

[0089] In addition, in Table 1 to Table 2, for "whether blocking occurred during the annealing process during loop formation", ○ represents the pass state where no blocking occurred; × represents the unacceptable state that blocking occurred.

[0090] For the "welding state", respectively use ◎ to indicate that when the terminal is welded to a bright oxygen-free copper rod, the solder joint has no air bubbles at all; Insufficient welding with air bubbles.

[0091] In addition, in the "comprehensive results", after comprehensively examining "whether sticking occurs during the annealing process during loop formation" and "welding state", ◎ indicates a very ideal result; ○ indicates an ideal result; × indicates bad result.

[0092] Accordingl...

technical field

[0001] The invention relates to a method for manufacturing copper rods, in particular to a method for producing bright oxygen-free copper rods. The oxygen-free copper rod manufactured by this method has the characteristics of high conductivity, low oxygen content and high elongation, and is mainly used in wind power, nuclear power, high-speed rail, automobile wires, ultra-high voltage wires and other fields that require high quality copper rods. Background technique

[0002] Wind power is the cleanest and safest power generation technology at present. At present, the development speed of wind power in the world is faster than that of other new energy sources. In the future, wind power is likely to become one of the main sources of global electricity. According to the forecast of China Wind Energy Association, the total installed capacity of wind power in China will reach 8 billion watts in 2020, 18 billion watts in 2030, and 50 billion watts in 2050. The Chi...

Examples

Embodiment 1

[0080]Bright oxygen-free copper rods were fabricated using the equipment shown in Figures 1 to 4 above. The specific method is to put the electrolytic copper plates heated by the drying furnace into the melting furnace in batches, and dissolve them at a temperature of 1160 degrees. The molten copper flows into the holding furnace through the flow channel to keep warm, and keeps warm at a temperature of 1160°C.

[0081] A thinner copper rod busbar is passed through the coating chamber connected with the holding furnace, and copper liquid is attached to the surface of the copper rod to form a thicker copper casting rod. In addition, before the busbar passes through the coating chamber, it is stripped to remove the oxygen-rich oxide layer on the busbar surface.

[0082] Afterwards, the copper rods are sequentially cooled, hot-rolled, and re-cooled. At this time, the temperature of the copper rod covered with copper liquid before entering the hot rolling process after cooling is...

Embodiment ５～７

[0088] When manufacturing bright oxygen-free copper rods, other conditions are the same as in Example 1, except that the processes of attaching molten copper, cooling, hot rolling, recooling, and coiling are repeated as shown in Table 2.

[0089] In addition, in Table 1 to Table 2, for "whether blocking occurred during the annealing process during loop formation", ○ represents the pass state where no blocking occurred; × represents the unacceptable state that blocking occurred.

[0090] For the "welding state", respectively use ◎ to indicate that when the terminal is welded to a bright oxygen-free copper rod, the solder joint has no air bubbles at all; Insufficient welding with air bubbles.

[0091] In addition, in the "comprehensive results", after comprehensively examining "whether sticking occurs during the annealing process during loop formation" and "welding state", ◎ indicates a very ideal result; ○ indicates an ideal result; × indicates bad result.

[0092] Accordingl...

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