Nickel copper silicon alloy and preparing method thereof

A silicon alloy, nickel-copper technology, applied in the field of nickel-copper-silicon alloy and its preparation, can solve the problems of not being able to meet the quality requirements of special operating environments, poor hardness and strength, etc.

Inactive Publication Date: 2019-08-16
ZHUHAI GUOHE RONGCHUANG SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a nickel-copper-silicon alloy, which aims to solve the problem that the existing nickel-copper alloy material has poor hardness and strength, and still cannot meet the quality requirements of some special working environments

Method used

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preparation example Construction

[0018] The embodiment of the present invention also provides a method for preparing a nickel-copper-silicon alloy, comprising:

[0019] placing the graphene in a pure iron pipe, and then placing the pure iron pipe together with other alloying elements in an intermediate frequency vacuum induction furnace for melting to obtain an alloy melting liquid;

[0020] pouring the molten alloy into a cast iron mold to form an ingot;

[0021] Place the ingot in an electric furnace and heat it to 1150-1200°C, heat it for 3-4 hours, then perform the first forging treatment, control its forging deformation to 10%-15%, and obtain the first forging;

[0022] Take out the first forging and put it into cold water to cool immediately. After it is completely cooled, put it back into the eDonkey and heat it to 1150-1200°C. After keeping it warm for 3-4 hours, carry out the second forging treatment to control its forging. The amount of deformation is 25-30%, and the second forging is obtained;

...

Embodiment 1

[0046] First the percentage by weight is: 0.15% graphene, 60.35% Ni, 31% Cu, 4.5% Si, 2.5% Fe (iron content will consider the amount of adorning graphene pure iron pipe), 1.5% Mn is smelted in an intermediate frequency vacuum induction furnace. Among them, 0.15% graphene is placed in a pure iron pipe with a diameter of 20mm and a wall thickness of 2mm. The upper circular surface of the pipe is welded with a 2mm thick pure iron plate, and three small holes with a diameter of 2mm are drilled on a circular surface. Copper-magnesium alloy with a magnesium content of 20% is used as a degassing agent, melted at 1600°C for 120 minutes, then the melt is lowered to 1450°C and kept for 40 minutes, and the temperature is raised to 1600°C for 30 minutes, and then After cooling down to 1450°C and maintaining it for 30 minutes, pour the molten alloy into a cast iron mold with a diameter of 180mm. After 30 minutes, open the furnace cover of the vacuum furnace, lift the cast iron mold and put...

Embodiment 2

[0049] First the percentage by weight is: 0.15% graphene, 60.5% Ni, 31% Cu, 4.5% Si, 2.5% Fe (iron content will consider the amount of adorning graphene pure iron pipe), 1.35% Mn is smelted in an intermediate frequency vacuum induction furnace. Among them, 0.15% graphene is placed in a pure iron pipe with a diameter of 20mm and a wall thickness of 2mm. The upper circular surface of the pipe is welded with a 2mm thick pure iron plate, and three small holes with a diameter of 2mm are drilled on a circular surface. Copper-magnesium alloy with a magnesium content of 20% is used as a degassing agent, melted at 1650°C for 100 minutes, then lowered the melt to 1500°C and kept it for 30 minutes, then raised the temperature to 1650°C for 25 minutes, and then After cooling down to 1500°C and keeping it for 40 minutes, pour the molten alloy into a cast iron mold with a diameter of 180mm. After 30 minutes, open the furnace cover of the vacuum furnace. Lift the cast iron mold and put it di...

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Abstract

The invention is suitable for the technical field of material engineering, and provides a nickel copper silicon alloy and a preparing method thereof. The nickel copper silicon alloy comprises, by weight percent, 0.07 to 0.15% of graphene, 60.3 to 62.93% of nickel, 28.42 to 31% of copper, 4 to 4.5% of silicon, 1.8 to 2.5% of iron, and 1.18 to 1.5% of manganese. The nickel copper silicon alloy has the high strength and hardness, the tensile strength reaches 1350 MPa or above, the yield strength reaches 1180 MPa or above, the hardness reaches above HRC41, the ductility reaches 18% or above, the reduction of area reaches 28% or above, and the mechanical performance index of the alloy is significantly greater than that of other nickel copper series alloy.

Description

technical field [0001] The invention belongs to the technical field of material engineering, and in particular relates to a nickel-copper-silicon alloy and a preparation method thereof. Background technique [0002] In aerospace, nuclear industry and marine engineering, the comprehensive performance requirements of some parts of equipment are very high. hardness to improve the wear resistance of parts. [0003] However, most of the materials with high strength and seawater corrosion resistance in seawater environment are nickel-copper alloy materials. And the existing nickel-copper alloy materials, such as Monel 400 alloy, Monel K500 alloy and the like. Among them, the forged strength of Monel 400 alloy is only about 500MPa; the highest strength of Monel K500 alloy is only about 1000MPa, and the hardness of these two alloys is not high, and the wear resistance is poor, so they cannot meet the requirements in seawater environment. The following performance requirements. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C19/03C22C1/10C22C1/02C22C1/06C22F1/10
CPCC22C19/03C22C1/1036C22C1/06C22F1/10C22C1/1047
Inventor 王雨李清涼袁兵李党国
Owner ZHUHAI GUOHE RONGCHUANG SCI & TECH CO LTD
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