Form-following adjusting base plate of large-size thin-wall structure part for selective laser melting forming

A technology of laser selective melting and thin-walled structural parts, which is applied in the direction of improvement of process efficiency, additive manufacturing, additive processing, etc., can solve problems such as large welding deformation and difficult production of test pieces, and achieve good forming quality.

Active Publication Date: 2020-06-19
CAPITAL AEROSPACE MACHINERY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spiral members are densely arranged, the wall is thin, and the cross section is variable. The width of the test piece is 5.0mm, and the average width of the

Method used

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  • Form-following adjusting base plate of large-size thin-wall structure part for selective laser melting forming
  • Form-following adjusting base plate of large-size thin-wall structure part for selective laser melting forming
  • Form-following adjusting base plate of large-size thin-wall structure part for selective laser melting forming

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Experimental program
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Embodiment 1

[0014] Such as Figure 1-3 As shown, taking the large-scale superalloy thin-walled structural parts as an example, the top outer diameter D 顶端外 : 262mm, inner diameter D 顶端内 : 250mm, bottom outer diameter D 底端外 : 1158mm, inner diameter D 底端内 : 1146mm, structural part height H: 1000mm.

[0015] (1) Selection of substrate material: large-scale thin-walled structural parts are made of superalloy materials, and the material of the substrate is No. 45 steel;

[0016] (2) Determination of substrate size: the number n of movable substrate sections is taken as 20, and the thickness of each movable substrate Δh=H / n=1000mm / 20=50mm is determined by the outer diameter of the bottom of the large-format superalloy thin-walled structural part D. 底端外 Determine the outer diameter d of the outermost ring of the circular substrate 0 =D 底端外 +40mm=1158mm+40mm=1198mm, the outer diameter of the first to 20th movable base plate is according to the formula d i =D i内 -6mm for calculation, see ...

example 2

[0020] Example 2: Taking large-format titanium alloy thin-walled structural parts as an example, the top outer diameter D top outside: 314mm, the inner diameter D top inside: 300mm, the bottom outer diameter D bottom outside: 1448mm, and the inner diameter D bottom inside: 1434mm , Structure height H: 1200mm.

[0021] (1) Selection of substrate material: large-format thin-walled structural parts are titanium alloy materials, and the substrate material is the same grade of titanium alloy;

[0022] (2) Determination of substrate size: the number n of movable substrate sections is taken as 30, the thickness of each movable substrate Δh=H / n=1200mm / 30=40mm, and the outer diameter of the bottom end of the large-format titanium alloy thin-walled structural part The outer diameter of the outermost ring of the circular substrate is determined outside the bottom of D = d0 = outside the bottom of D + 40mm = 1448mm + 40mm = 1488mm, and the outer diameter of the movable substrate in Sectio...

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Abstract

The invention discloses a form-following adjusting base plate of a large-size thin-wall structure part for selective laser melting forming. The base plate is divided into multiple sections of movablebase plates, the diameters of the base plates are gradually increased from top to bottom, the base plate on the upper section can be embedded on the next adjacent section of base plate in a sleeving manner, the thickness of each section of base plate is consistent, and the base plates can be placed in the large-format thin-wall structure part.

Description

technical field [0001] The invention belongs to the field of laser selective melting and forming, and relates to a conformal adjustment substrate of large-scale thin-walled structural parts. Background technique [0002] Curved thin-walled structural parts are important components of aerospace products, the small end is 200mm, the large end is 1200mm, and the shaft height is 1000mm. The spiral members are densely arranged, the wall is thin, and the cross section is variable. The width of the test piece is 5.0mm, and the average width of the weld reaches 3.2mm. The weld area accounts for more than 60% of the surface area of ​​the product, and the welding deformation is large. Production is difficult. [0003] Additive manufacturing provides a new high-efficiency, high-quality, and overall optimized manufacturing process solution for structural parts manufacturing. At present, in the field of laser selective melting forming, a large number of products have been additively ma...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y30/00
CPCB33Y30/00B22F10/00B22F12/30B22F10/28Y02P10/25
Inventor 王国庆何京文董鹏梁晓康严振宇赵衍华马丽翠马芳周庆军朱瑞灿田彩兰刘天亮洪媛媛矫慧
Owner CAPITAL AEROSPACE MACHINERY
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