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Copper-nickel-silicon alloy and preparation method thereof

A technology of silicon alloy and copper alloy, which is applied in the field of copper-nickel-silicon alloy and its preparation, can solve the problems of core and cavity production, insufficient strength, and inability to use injection molds, etc., to improve fatigue and wear resistance The effect of improving properties such as tensile strength and hardness

Inactive Publication Date: 2014-04-23
YANTAI WANLONG VACUUM METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, copper alloys have been widely used in machinery, light industry, clocks and watches and other departments. Although ordinary copper alloys have good conductivity, they cannot be used for the production of cores and cavities of injection molds due to insufficient strength.

Method used

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  • Copper-nickel-silicon alloy and preparation method thereof
  • Copper-nickel-silicon alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Based on the percentage of the total weight of the copper-nickel-silicon alloy: nickel accounts for 6%, silicon accounts for 1.5%, chromium accounts for 1.2%, manganese accounts for 0.4%, silver accounts for 0.08%, lithium accounts for 0.06%, and copper accounts for 90.76%.

[0021] Preparation method: put copper, nickel and silicon into a vacuum melting furnace, after melting, add chromium, manganese, silver and lithium, after melting, pour into alloy ingots; hot forge the obtained alloy ingots in turn ( The initial forging temperature is 940°C, the final forging is 700°C), solid solution (940°C, 2h), aging (450°C, 8h) treatment processes, and the 450×540×140mm, about 300kg heavy slab is produced.

Embodiment 2

[0023] Based on the percentage of the total weight of the copper-nickel-silicon alloy: nickel accounts for 6.5%, silicon accounts for 1.8%, chromium accounts for 0.8%, manganese accounts for 0.3%, silver accounts for 0.06%, lithium accounts for 0.08%, and copper accounts for 90.46%.

[0024] Preparation method: put copper, nickel and silicon into a vacuum melting furnace, after melting, add chromium, manganese, silver and lithium, after melting, pour into alloy ingots; hot forge the obtained alloy ingots in turn ( The initial forging temperature is 940°C, the final forging is 700°C), solid solution (960°C, 2h), and aging (460°C, 6h) treatment processes to produce a 450×540×140mm, about 300kg heavy slab.

Embodiment 3

[0026] Based on the percentage of the total weight of the copper-nickel-silicon alloy: nickel accounts for 7%, silicon accounts for 2%, chromium accounts for 0.7%, manganese accounts for 0.2%, silver accounts for 0.05%, lithium accounts for 0.06%, and copper accounts for 89.99%.

[0027] Preparation method: put copper, nickel and silicon into a vacuum melting furnace, after melting, add chromium, manganese, silver and lithium, after melting, pour into alloy ingots; hot forge the obtained alloy ingots in turn ( The initial forging temperature is 940°C, the final forging is 700°C), solid solution (970°C, 2h), and aging (470°C, 4h) treatment processes to produce a 450×540×40mm, about 87kg heavy slab.

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Abstract

The invention relates to a copper-nickel-silicon alloy and a preparation method thereof. Weighted on the basis of the total weight of the alloy, the alloy comprises 5-7% of nickel, 1-2.5% of silicon, 0.5-2% of chromium, 0.1-0.4% of manganum, 0.05-0.2% of silver, 0.03-0.1% of lithium and 87.80-93.32% of copper. The copper-nickel-silicon alloy provided by the invention has a two-phase microstructure and comprises crystal grains on a copper-enriched region as well as nickel silicide and chromium silicide phases noncontinuously distributed on a crystal boundary. The copper-nickel-silicon alloy provided by the invention has high tensile strength and yield strength as well as high hardness and conductivity and can be applied to the injection mould industry to replace some tool steel.

Description

technical field [0001] The invention relates to a copper-nickel-silicon alloy and a preparation method thereof. Background technique [0002] At present, copper alloys have been widely used in machinery, light industry, clocks and watches and other departments. Although ordinary copper alloys have good conductivity, they cannot be used for the production of cores and cavities of injection molds due to insufficient strength. . Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a copper-nickel-silicon alloy and its preparation method that can be applied to the injection mold industry as a steel mold insert, which has high tensile strength and yield strength, high hardness and electrical conductivity . [0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a copper-nickel-silicon alloy, comprising the following raw materials in weight percentage: nickel...

Claims

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Application Information

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IPC IPC(8): C22C9/06C22F1/08
Inventor 周舟赵景山孙成国王小民李玮王肇飞牟建鹏雷延存
Owner YANTAI WANLONG VACUUM METALLURGY
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