Method for producing free-cutting high-conducting copper rod used for charging pile plug

A production method and easy-cutting technology, applied in the field of metal material processing, can solve the problems of affecting charging efficiency and safety, large contact resistance, large heat generation, etc., and achieve the effects of reduced equipment investment, reduced energy consumption, and high efficiency

Inactive Publication Date: 2019-01-22
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although brass has good cutting performance and high hardness, another result of using brass is that the contact resistance (conductivity is generally about 60% I...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The charging post of this embodiment uses a high-conductivity free-cutting copper rod, and the target composition of the tellurium-copper alloy is selected to be 0.2% (mass percentage), and its copper raw material is selected from No. 1 cathode copper and a tellurium-copper master alloy raw material containing 60% tellurium, specifically The preparation method comprises the following steps:

[0033] (1) The cathode copper and the tellurium-copper master alloy are melted and homogenized in the melting chamber of the submerged power frequency induction furnace, and the melting temperature is set at 1160°C. Set the temperature of the insulation bin of the submerged power frequency induction furnace to 1150°C, and the temperature of the electric furnace is automatically controlled by a temperature relay with a control accuracy of ±2°C. In the melting bin, calcined charcoal is used to cover the melt, and the covering thickness is greater than 200mm; in the heat preservation ...

Embodiment 2

[0039]The high-conductivity free-cutting copper rod for the charging pile of the present embodiment selects the target composition of tellurium-copper alloy as 0.4% (mass percentage), and contains 0.02% tin (mass percentage), and its copper raw material selects No. 1 cathode copper, containing tellurium 60% tellurium-copper master alloy and pure tin are used as raw materials, and the specific preparation method includes the following steps:

[0040] (1) The cathode copper, tellurium-copper master alloy and tin ingot are melted and homogenized in the melting chamber of the submerged power frequency induction furnace, and the melting temperature is set at 1150°C. Set the temperature of the insulation bin of the submerged flow type power frequency induction furnace to 1140°C, and the temperature control accuracy of the electric furnace is ±2°C. In the melting bin, calcined charcoal is used to cover the melt, and the covering thickness is greater than 200mm; in the heat preservati...

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Abstract

The invention relates to a metal material processing method, and especially relates to a method for producing a free-cutting high-conducting copper rod used for a charging pile plug. The method comprises the following steps: (1) using a submersible power frequency induction electric furnace, and performing up casting an oxygen-free tellurium copper alloy rod; (2) performing on-line heating on theoxygen-free tellurium copper alloy rod prepared in the step (1) and performing direct continuous extruding to form the extruded tellurium copper alloy rod; and (3) performing drawing molding on the extruded tellurium copper alloy rod prepared in the step (2) through 1-3 molds by a drawing machine to prepare the desired free-cutting high-conducting copper rod. The tellurium as an alloying element is added to copper, which greatly improves the cutting performance of the alloy, and on the other hand, ensures that the electrical conductivity of the alloy is above 95% IACS; and after cold deformation, the hardness can reach above HB115 and up to HB130, which meets the usage requirement of the high-performance charging pile plug. The production method has the characteristics of serialization, short process, high yield and high production efficiency.

Description

technical field [0001] The invention relates to a metal material processing method, in particular to a production method of an easy-to-cut high-conductivity copper rod for a charging pile plug. Background technique [0002] Charging piles refer to facilities used for electric vehicles and other large battery packs to supplement electric energy. Its function is similar to that of fuel dispensers in gas stations. It can be fixed on the ground or walls and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) And in the parking lot or charging station of the residential area, it can charge various types of electric vehicles according to different voltage levels. The input end of the charging pile is directly connected to the AC grid, and the output end is equipped with a charging plug for charging the electric vehicle. The charging pile plug is one of the core components of the charging pile, which plays the role of connecting the power su...

Claims

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Application Information

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IPC IPC(8): B21C37/04C22C1/03C22C9/00B22D11/14
CPCB21C37/04B22D11/004B22D11/145C22C1/03C22C9/00
Inventor 李明茂朱明彪
Owner JIANGXI UNIV OF SCI & TECH
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