Preparation method of copper alloy additive based on electron beam powder forming

An electron beam, copper alloy technology, applied in the field of additive manufacturing, can solve the problems of large arc heat source action area, poorly controllable heat flow distribution, large operating speed limit, etc., to avoid overheating or spheroidization, reduce residual stress, The effect of high energy utilization

Active Publication Date: 2021-02-05
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the arc heat source has a large action area and low manufacturing cost, which is suitable for wire materials, but the arc energy density is low, the heat flow distribution is poorly controllable, the heat affected zone is large, and the shape of the arc is greatly limited by its operating speed, and the heat source moves slowly; and Due to the low energy density of the laser, it reflects on most materials and is easy to oxidize without vacuum.

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
  • Preparation method of copper alloy additive based on electron beam powder forming
  • Preparation method of copper alloy additive based on electron beam powder forming

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0032] What the present embodiment prepares is Cu-10Al-4Fe copper alloy cube, and the preparation method based on electron beam powder spreading comprises the following steps:

[0033] ①Use CAD to establish a three-dimensional solid model of Cu-10Al-4Fe alloy cube, and then use layered software to divide the three-dimensional solid model into thin slices with a thickness of 0.75mm to obtain STL format files, and then import the obtained STL format files into electron beam rapid prototyping machine rapid prototyping software.

[0034] ② Turn on the power, reset all data to zero, and check whether there is enough Cu-10Al-4Fe alloy powder in the powder box. Adjust the forming platform and fill it with craft powder. The forming platform is 30-35mm away from the bottom of the scraper, which is about the thickness of the substrate.

[0035] ③Put the cleaned base plate in the center of the process powder on the forming platform, and fit it with the thermocouple; adjust the base pla...

Embodiment 2）

[0043] The rest of the preparation method based on electron beam powder spreading and forming of the present embodiment are the same as in Example 1, except that:

[0044]In step ①, use CAD to establish a three-dimensional solid model of Cu-10Al-4Fe alloy cube, and then use layered software to divide the three-dimensional solid model into slices with a thickness of 0.50 mm to obtain STL format files.

[0045] Step ⑦ When melting the cross section, the beam current value of the electron beam linearly scans the cross section from 5.5mA (330kW) to 7mA (420kW) incrementally over time, and the increment speed is 0.2mA / s.

Embodiment 3）

[0047] The rest of the preparation method based on electron beam powder spreading and forming of the present embodiment are the same as in Example 1, except that:

[0048] In step ①, use CAD to establish a three-dimensional solid model of Cu-10Al-4Fe alloy cube, and then use layered software to divide the three-dimensional solid model into slices with a thickness of 0.60mm to obtain STL format files.

[0049] Step ⑦ When melting the cross-section, the beam current value of the electron beam linearly scans the cross-section from 5.5mA (330kW) to 7mA (420kW) with time, and the increment speed is 0.3mA / s.

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
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing copper alloy additive material based on electron beam powder laying forming, which comprises the following steps: importing the obtained STL format file into the rapid prototyping software of the forming machine. A layer of copper alloy powder is pre-spread on the forming platform, and the electron beam preheats the substrate and the powder bed. Melting contour, electron beam scanning boundary. Melting section, electron beam linear scanning section beam current value from 5.5mA to 7mA scanning with time increment. Repeat the foregoing process until the manufacture of copper alloy parts is completed. The preparation method of the copper alloy additive material based on electron beam powder laying and forming of the present invention adopts the additive manufacturing technology of powder spreading type electron beam selective melting, because the electron beam preheats the substrate and the powder bed and the beam current increases The type scanning method effectively reduces the warping and non-densification of the structure caused by the residual stress in the forming process, and avoids the phenomenon of overheating or spheroidization of the formed part, thereby realizing high-quality and efficient additive manufacturing of copper alloys.

Description

technical field [0001] The invention relates to an additive manufacturing method, in particular to a method for preparing copper alloy additive based on electron beam powder laying and forming. Background technique [0002] At present, copper or copper alloy products or parts are mainly manufactured by casting or machining. The cost of the mold used in the casting method is high, and the process engineering is difficult to control, which is prone to structural defects and affects its life; while the mechanical processing method has high processing precision, but there are problems such as low material utilization rate, numerous and complicated processes, long production cycle, and high manufacturing cost. Therefore, for complex components, the current two manufacturing processes cannot meet the progress requirements of rapid development and mass production of new products. [0003] Metal additive manufacturing technology is driven by CAD software, using a heat source to mel...

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): B22F3/105B33Y10/00B33Y30/00
CPCB22F3/003B33Y10/00B33Y30/00B22F10/00B22F10/28B22F10/36B22F12/41B22F12/13B22F12/17Y02P10/25
Inventor 赵阳王晓明黄柯朱胜韩国峰王思捷常青石晶任智强滕涛李华莹
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap