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High-elasticity copper-chromium-zirconium alloy and machining process thereof

A processing technology, copper-chromium-zirconium technology, applied in high-conductivity copper-chromium-zirconium alloy and its processing technology, high-elasticity copper-chromium-zirconium alloy, high-elasticity field, can solve the problem of rapid strength decline, low elastic properties of copper-chromium-zirconium alloy, copper-chromium-zirconium alloy Research on the influence of the strength and electrical conductivity of chromium-zirconium alloys to achieve the effect of high elasticity, high conductivity and improving the strength of the alloy

Inactive Publication Date: 2016-07-06
苏州中色华人铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the elastic properties of copper-chromium-zirconium alloys are low, and the strength decreases rapidly at high temperatures (temperatures greater than 560°C), so it is necessary to add trace elements for alloying improvement
[0003] In order to obtain the best match between strength and conductivity, many institutions at home and abroad have conducted a lot of systematic research on the effect of adding Si, Mg, Ni, Ti, Fe and rare earths on the strength and conductivity of the copper-chromium-zirconium alloy. Research on the influence of the combination of Si+Ti or Si+Ti+Fe on the strength and electrical conductivity of copper-chromium-zirconium alloys, especially no research on the influence of the combination of Si+Ti or Si+Ti+Fe on the elastic properties of the alloy

Method used

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  • High-elasticity copper-chromium-zirconium alloy and machining process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] a Continuous casting: Melting is carried out in a horizontal continuous casting furnace. The order of adding the alloy is: first add Cu, after melting, add a covering agent (flaky graphite) and keep it warm for 5-10 minutes, after fully degassing and removing impurities, then add the master alloy of Cr, Zr, Si, Ti and Fe elements, Among them, Cr, Si, and Fe master alloys are added first, and the temperature of the melt in the furnace is kept at 1300°C. After melting, the furnace temperature is lowered to 1250°C, and then Zr and Ti master alloys are added. After holding the heat for 20 minutes, measure the alloy composition in the furnace, and adjust the furnace temperature to the continuous casting temperature of 1250°C after reaching the standard. The alloy composition is controlled by Example 1 in Table 1.

[0033] b Solid solution: The continuous casting rod is subjected to solution treatment, the temperature of solution treatment is 950°C, and the time is 5 hours. ...

Embodiment 2

[0039] a Continuous casting: Melting is carried out in a power frequency horizontal continuous casting furnace. The order of adding the alloy is: first add Cu, after melting, add a covering agent (flaky graphite) and keep it warm for 5-10 minutes, after fully degassing and removing impurities, then add the master alloy of Cr, Zr, Si, Ti and Fe elements, Among them, Cr, Si, and Fe master alloys are added first, and the temperature of the melt in the furnace is kept at 1300°C. After melting, the furnace temperature is lowered to 1250°C, and then Zr and Ti master alloys are added. After holding the heat for 20 minutes, measure the alloy composition in the furnace, and adjust the furnace temperature to the continuous casting temperature of 1250°C after reaching the standard. The alloy composition is controlled by Example 2 in Table 1.

[0040] b Solid solution: The continuous casting rod is subjected to solution treatment, the temperature of solution treatment is 950°C, and the t...

Embodiment 3

[0046] a Continuous casting: Melting is carried out in a power frequency horizontal continuous casting furnace. The order of adding the alloy is: first add Cu, after melting, add a covering agent (flaky graphite) and keep it warm for 5-10 minutes, after fully degassing and removing impurities, then add an intermediate alloy of Cr, Zr, Si and Ti elements, of which Cr Add Zr and Ti master alloys first, keep the melt temperature in the furnace at 1300°C, lower the furnace temperature to 1250°C after melting, and then add Zr and Ti master alloys. After holding the heat for 20 minutes, measure the alloy composition in the furnace, and adjust the furnace temperature to the continuous casting temperature of 1250°C after reaching the standard. The alloy composition is controlled by Example 3 in Table 1.

[0047] b Solid solution: The continuous casting rod is subjected to solution treatment, the temperature of solution treatment is 950°C, and the time is 4 hours.

[0048] c rolling:...

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Abstract

The invention discloses a high-elastic copper-chromium-zirconium alloy and a processing technology thereof. By improving the strength and elasticity of the copper-chromium-zirconium alloy wire, the electrical conductivity does not decrease significantly, so that it can meet the requirements of high strength, elasticity and electrical conductivity, such as conductive springs. The copper chromium zirconium alloy, its mass percentage is: Cr 0.5~1.2%, Zr 0.05~0.5%, 0.2 <x(x为si、ti两种元素或si、ti、fe三种元素)<1.5%，余量为cu。其中，si、fe元素提高合金强度，ti元素提高合金的弹性性能。该合金经过以下工艺流程：a连铸、b固溶、c轧制、d时效、e拉拔、f成品退火、合金丝材成品。所制备合金的抗拉强度σb can reach 680~780MPa, the plastic elongation δ is 2~6%, the electrical conductivity is 68~75%IACS, and the hardness (Hv) is greater than 165.< / x(x为si、ti两种元素或si、ti、fe三种元素)<1.5%，余量为cu。其中，si、fe元素提高合金强度，ti元素提高合金的弹性性能。该合金经过以下工艺流程：a连铸、b固溶、c轧制、d时效、e拉拔、f成品退火、合金丝材成品。所制备合金的抗拉强度σ

Description

technical field [0001] The invention relates to a highly elastic copper-chromium-zirconium alloy, in particular to a high-elasticity, high-conductivity copper-chromium-zirconium alloy and its processing technology, belonging to the technical field of non-ferrous metal processing. Background technique [0002] Copper-chromium-zirconium alloy has high strength and high conductivity, its tensile strength can reach 560MPa, and its conductivity is greater than 80% IACS, which is a typical aging-strengthened alloy. The alloying principle is that the solid solubility of Cr and Zr alloying elements in copper is high at high temperature, but the solid solubility drops sharply at low temperature, and a precipitation strengthening phase is formed between Cr, Zr and Cu elements, and the alloy strength and electrical conductivity are equal. get improved. However, the elastic properties of copper-chromium-zirconium alloys are low, and the strength decreases rapidly at high temperatures...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C1/03C22F1/08
CPCC22C9/00C22C1/03C22F1/08
Inventor 向朝建李华清张曦陈忠平
Owner 苏州中色华人铜业有限公司
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