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Production technology of yellow copper busbar for electrical device

A technology for electrical equipment and production process, applied in the field of production technology of brass bars for electrical equipment, can solve the problems of shortened service life of copper bars, difficulty in meeting high quality requirements of copper bars, poor strength and corrosion resistance of copper bars, etc. , to achieve the effect of enhancing corrosion resistance and processing performance, preventing oxidation and good corrosion resistance

Inactive Publication Date: 2018-09-25
苏州绿导精密模具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing copper bars have problems of poor strength and corrosion resistance, which greatly reduces the service life of the copper bars, and it is difficult to meet the high-quality requirements of high-tech electrical equipment for copper bars

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A production process for brass bars for electrical equipment, comprising the following steps:

[0026] (1) Add 1 part of manganese dioxide powder (with a particle size of 20-35 μm) to the bottom of the intermediate frequency induction furnace, then add 75 parts of electrolytic copper, 24 parts of zinc ingots, and 2.5 parts of aluminum ingots into the intermediate frequency induction furnace. Vacuum melting at 1220°C for 50 minutes, then lower the temperature to 1090°C, non-vacuum melting for 28 minutes;

[0027] (2) Lead the melted copper liquid into the holding furnace, the copper liquid is solidified and formed through the crystallizer, and the solidified copper bar is continuously pulled out of the crystallizer by a traction mechanism, and is sawed by a synchronous automatic saw;

[0028] (3) Heating the billet obtained by sawing to 300°C, keeping it warm for 32 minutes, and then raising the temperature to 730°C at a speed of 2.5°C / min; extruding with an extrusion ma...

Embodiment 2

[0033] A production process for brass bars for electrical equipment, comprising the following steps:

[0034] (1) Add 1.1 parts of manganese dioxide powder (with a particle size of 20 to 35 μm) to the bottom of the intermediate frequency induction furnace, then add 82 parts of electrolytic copper, 20 parts of zinc ingots, and 2.5 parts of aluminum ingots into the intermediate frequency induction furnace. Vacuum melting at 1260°C for 40 minutes, then lower the temperature to 1000°C, non-vacuum melting for 22 minutes;

[0035] (2) Lead the melted copper liquid into the holding furnace, the copper liquid is solidified and formed through the crystallizer, and the solidified copper bar is continuously pulled out of the crystallizer by a traction mechanism, and is sawed by a synchronous automatic saw;

[0036] (3) Heating the billet obtained by sawing to 300°C, keeping it warm for 30 minutes, and then raising the temperature to 730°C at a speed of 3°C / min; extruding with an extrusio...

Embodiment 3

[0041] A production process for brass bars for electrical equipment, comprising the following steps:

[0042] (1) Add 1.3 parts of manganese dioxide powder (with a particle size of 20 to 35 μm) to the bottom of the intermediate frequency induction furnace, then add 70 parts of electrolytic copper, 22 parts of zinc ingots, and 3.3 parts of aluminum ingots into the intermediate frequency induction furnace. Vacuum melting at 1220°C for 45 minutes, then lower the temperature to 1080°C, non-vacuum melting for 30 minutes;

[0043] (2) Lead the melted copper liquid into the holding furnace, the copper liquid is solidified and formed through the crystallizer, and the solidified copper bar is continuously pulled out of the crystallizer by a traction mechanism, and is sawed by a synchronous automatic saw;

[0044] (3) Heating the billet obtained by sawing to 350°C, keeping it warm for 35min, and then raising the temperature to 710°C at a speed of 2°C / min; extruding by an extrusion machi...

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PUM

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Abstract

The invention provides a production technology of a yellow copper busbar for an electrical device. The production technology comprises the following steps: (1) adding manganese dioxide powder into thebottom of a medium-frequency induction furnace, and adding electrolytic copper, a zinc ingot and an aluminum ingot into the medium-frequency induction furnace, vacuum-melting for 40-50 minutes in a temperature of 1,220-1,260 DEG C, and cooling the temperature to 1,080-1,110 DEG C, melting in non-vacuum for 20-30 minutes; (2) importing to a maintaining furnace, consolidation-forming by a crystallizer, continuously pulling out the copper busbar by using a drawing mechanism, and sawing; (3) heating a sawed ingot blank to 300-350 DEG C, heat-insulating for 30-40 minutes, and warming to 710-740 DEG C, extruding by an extruding machine, cutting, head-rolling by a head rolling machine, and performing first drawing; (4) performing subzero treatment, warming to a room temperature; (5) warming to 350-410 DEG C, heat-insulating for 2.5-3 hours, and cooling to the room temperature along with the furnace; and (6) performing second head-rolling, performing second drawing and aligning, sawing by a sawing machine, checking, and packaging, to obtain the yellow copper busbar. The prepared yellow copper busbar is high in strength, good in corrosion resistance, and excellent in electrical property, and is capable of satisfying the requirements of the electrical device to the high quality of the copper busbar.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a production process of brass bars for electrical equipment. Background technique [0002] Copper bars, also known as copper bus bars or copper bus bars, are made of copper and have a rectangular or chamfered (rounded) rectangular long conductor section (now generally use rounded copper bars to avoid tip discharge). The circuit plays the role of transmitting current and connecting electrical equipment. Copper bars are widely used in electrical equipment, especially complete sets of power distribution devices; generally, copper bars are used for U, V, W phase bus bars and PE bus bars in power distribution cabinets; copper bars are generally marked in use There are letter marks of the same color or painted with the same color paint, the copper bars of the U phase are painted with "yellow", the copper bars of the V phase are painted with "green", the copper bars o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/10C22C1/02C22F1/08
CPCC22C1/1036C22C9/04C22F1/08C22C1/1047
Inventor 李文勇
Owner 苏州绿导精密模具有限公司
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