Laser selective melting forming method of copper-chromium alloy part

A technology of laser selective melting and copper-chromium alloy, which is applied in the direction of process efficiency improvement, energy efficiency improvement, additive processing, etc., can solve the problems such as the production efficiency of complex parts that cannot be directly formed, achieve the application value of mass production, and shorten the production cycle , The effect of improving the forming efficiency

Inactive Publication Date: 2019-05-17
XIAN BRIGHT ADDTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a laser selective melting forming method for copper-chromium alloy parts, which solves the probl

Method used

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Examples

Experimental program
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Example Embodiment

[0038] Example 1

[0039] The laser selective melting forming method of copper-chromium alloy parts of the present invention is specifically implemented according to the following steps:

[0040] Step 1. Pretreatment of Cu-Cr alloy powder;

[0041] Cu-Cr alloy powder is composed of the following components according to the mass fraction: Cr accounts for 5% by mass, Cu is the balance, and the sum of the percentages of the above components is 100%;

[0042] The pretreatment is specifically: drying the Cu-Cr alloy powder in a vacuum drying oven at a temperature of 100°C and atmospheric pressure not greater than -0.05MPa for 2 hours, then vacuum cooling for 2 hours and then taking it out, and then using a 200-mesh sieve to sieve the powder. ;

[0043] Among them, the particle size of Cu-Cr alloy powder is between 10-53um;

[0044] Step 2. Before forming, prepare the program files and SLM equipment;

[0045] Step 2.1, preparation of program files;

[0046] First, use the 3D modeling software t...

Example Embodiment

[0052] Example 2

[0053] The laser selective melting forming method of copper-chromium alloy parts of the present invention is specifically implemented according to the following steps:

[0054] Step 1. Pretreatment of Cu-Cr alloy powder;

[0055] Cu-Cr alloy powder is composed of the following components according to the mass fraction: Cr accounts for 10% by mass, Cu is the balance, and the sum of the percentages of the above components is 100%;

[0056] The pretreatment is specifically: drying the Cu-Cr alloy powder in a vacuum drying oven at a temperature of 130°C and atmospheric pressure not greater than -0.05MPa for 4 hours, then vacuum cooling for 2 hours and then taking it out, and then using a 240-mesh sieve to sieve the powder. ;

[0057] Among them, the particle size of Cu-Cr alloy powder is between 10-53um;

[0058] Step 2. Before forming, prepare the program files and SLM equipment;

[0059] Step 2.1, preparation of program files;

[0060] First, use the 3D modeling software ...

Example Embodiment

[0066] Example 3

[0067] The laser selective melting forming method of copper-chromium alloy parts of the present invention is specifically implemented according to the following steps:

[0068] Step 1. Pretreatment of Cu-Cr alloy powder;

[0069] Cu-Cr alloy powder is composed of the following components according to the mass fraction: Cr accounts for 20% by mass, Cu is the balance, and the sum of the percentages of the above components is 100%;

[0070] The pretreatment is specifically: drying the Cu-Cr alloy powder in a vacuum drying oven at a temperature of 100-150℃ and atmospheric pressure not greater than -0.05MPa for 2-5 hours, then vacuum cooling for 2 hours and then taking it out, and then using a 220 mesh screen Powder, ready;

[0071] Among them, the particle size of Cu-Cr alloy powder is between 10-53um;

[0072] Step 2. Before forming, prepare the program files and SLM equipment;

[0073] Step 2.1, preparation of program files;

[0074] First, use the 3D modeling software to...

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Abstract

The invention discloses a laser selective melting forming method of a copper-chromium alloy part. The laser selective melting forming method specifically comprises the following steps of preprocessingCu-Cr alloy powder, preparing a program file and a SLM device, finally melting the selective laser to form a copper-chromium alloy part. The laser selective melting technology can directly form complex parts, shorten the production period and improve the forming efficiency, and the method has a great production application value; in addition, the cooling rate can reach 106 orders of magnitude, asmaller molten pool range and a molten pool can be rapidly cooled, and the liquid phase layering phenomenon in the traditional process is overcome.

Description

technical field [0001] The invention belongs to the technical field of laser selective melting technology rapid prototyping methods, and in particular relates to a laser selective melting forming method for copper-chromium alloy parts. Background technique [0002] Cu-Cr alloy refers to a series of alloys formed by adding Cr and other trace alloy elements with Cu as the matrix. Because of its high strength and hardness after heat treatment, good electrical and thermal conductivity and corrosion resistance, at present, it is mainly used It is used in the preparation of resistance welding electrodes, contact materials, integrated circuit lead frames, overhead wires of trams and electric trains, steering gears of electric tools, rotor wires of large high-speed turbine generator rotors, electrical plugs, switches, motor collector rings, etc. High-conductivity and high-strength products, Cu-Cr alloys are also used in heat exchange environments that are not directly related to con...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y10/00B33Y50/02
CPCY02P10/25
Inventor 张宝宁赵晓明赵伟王雷
Owner XIAN BRIGHT ADDTIVE TECH CO LTD
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