Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of high-strength and high-conductivity softening copper alloy and preparation method thereof

A technology of anti-softening and copper alloy, which is applied in the field of high-strength and high-conductivity softening copper alloy and its preparation, can solve the problems that the strength cannot be greatly improved and the effect is limited, so as to improve the anti-softening performance at high temperature, maintain the electrical conductivity, The effect of increasing strength

Active Publication Date: 2019-10-18
全南晶环科技有限责任公司 +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the special properties of zirconium, its maximum solid solubility in copper is less than 0.1wt%, so the effect of precipitation strengthening treatment is limited, resulting in that its strength cannot be greatly improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of high-strength and high-conductivity softening copper alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, choose a vacuum induction electric furnace to prepare a copper-hafnium master alloy, and put a sponge hafnium with a purity of more than 99% and a cathode copper raw material with a purity of more than 99.95% in the corundum crucible. The mass percentages of copper and hafnium are 92% and 8% respectively. After the vacuum is drawn to 0.02Pa, argon gas is filled to 0.08MPa, and the heating power is started. After the material is heated to 1600°C for 30 minutes, the casting is completed in the furnace to produce 8% copper-hafnium intermediate alloy and then taken out.

[0024] Continue to choose the vacuum induction electric furnace, the capacity of the electric furnace crucible is 50 kg, and prepare a Φ125×250 casting mold to be put into the furnace for use. According to the mass ratio of 0.6% chromium, 0.6% hafnium, and copper, the corundum crucible simultaneously puts 99% pure chromium particles, the above 8% copper-hafnium intermediate alloy and 99.95% pure cathode...

Embodiment 2

[0030] Referring to the method steps in Example 1, after 8% copper-hafnium master alloy is produced, a 20kg vacuum intermediate frequency induction melting furnace is selected to prepare a copper alloy containing 0.8% chromium, 0.9% hafnium and the balance of copper. After keeping the temperature for 10 minutes, the crucible was poured into a graphite boat with a length of 180×120 mm and a height of 50 mm in a vacuum. After opening the vacuum furnace to take out the ingot, the surface is milled into an ingot of 178mm×118×30mm. After the alloy is heated to 900°C in a box-type resistance furnace, the alloy is hot-rolled to a thickness of 6±0.2mm using a Φ300×400 two-roll irreversible rolling mill, and the final rolling temperature of the material is not low during the hot rolling process At 600°C. Then carry out solution treatment at 900℃×30min, quenching method is water quenching. After cleaning the surface of the billet, use a Φ300 / Φ100×400 cold rolling mill to cold-roll the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
hardnessaaaaaaaaaa
tensile strengthaaaaaaaaaa
softening pointaaaaaaaaaa
Login to View More

Abstract

Disclosed is a high-strength high-conductivity softening-resistant copper alloy. The high-strength high-conductivity softening-resistant copper alloy comprises, by mass, 0.1-1.0% of Cr, 0.05-1.0% of Hf and the balance copper. The invention further discloses a preparing method for the above copper alloy material. The preparing method comprises the following steps that (1) a copper-hafnium intermediate alloy is prepared in the vacuum environment; (2) a copper-chromium-hafnium alloy ingot are prepared; (3) the copper-chromium-hafnium alloy ingot is taken out, after hot squeezing and hot pressingor hot forging at 800-920 DEG C are conducted, a bar material or a plate material with a certain specification is obtained, then heat insulating is conducted in a resistance furnace at 900 DEG C for 30-45 min, and finally, rapid quenching treatment and cold drawing or cold rolling for deformation are conducted in sequence; and (4) after the copper-chromium-hafnium alloy is cold-deformed, aging processing is conducted on the alloy in the resistance furnace under 400-500 DEG C for 2-3 h, and the final alloy material is obtained. The high-strength high-conductivity softening-resistant copper alloy not only has high strength and high conductivity, but also has high high-temperature softening-resistant performance and can be applied to high-performance electrical copper products such as high-voltage electric contacts, soldering tips, electric contacting wheels, lead frames and crystallizers.

Description

Technical field [0001] The invention relates to an alloy material and a preparation method thereof, in particular to a high-strength and high-conductivity softened copper alloy and a preparation method thereof. Background technique [0002] Copper alloy with high strength and high conductivity is a kind of structural functional material with excellent comprehensive physical and mechanical properties. It has an irreplaceable role in many industrial fields. It is widely used in lead frames of integrated circuits and various vacuum extinguishers. Arc chamber electrode, electrode of spot welding and seam welding machine, rotor of high-power asynchronous traction motor, electric contact wheel, etc. There is a trade-off relationship between the strength and conductivity of copper alloys, that is, after a certain method is used to strengthen the copper alloy, its conductivity will inevitably decrease to a certain extent, especially in vacuum switches, welding tips, and electrical In th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/00
Inventor 邬元旭钟月明李明茂蔡立宁张乐清郭树军
Owner 全南晶环科技有限责任公司