Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Thin-wall cylinder structure reinforcing rib characteristic stirring friction additive manufacturing method and equipment

An additive manufacturing and friction stir technology, applied in manufacturing tools, metal processing equipment, welding equipment, etc., can solve the problems of low mechanical properties of formed parts, difficult high-quality forming, deformation of thin-walled structures, etc., to improve the utilization rate of materials , The effect of reducing the processing time and improving the forming efficiency

Active Publication Date: 2022-01-14
SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties of formed parts are generally lower than those of forging base materials in traditional laser additive, arc additive and other fusion welding additive manufacturing methods. The large heat input can easily lead to deformation of thin-walled structures, and the forming efficiency is low, especially for aluminum alloys. , magnesium alloy and other lightweight material structural parts, traditional additive manufacturing methods are difficult to form with high quality

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
  • Thin-wall cylinder structure reinforcing rib characteristic stirring friction additive manufacturing method and equipment
  • Thin-wall cylinder structure reinforcing rib characteristic stirring friction additive manufacturing method and equipment
  • Thin-wall cylinder structure reinforcing rib characteristic stirring friction additive manufacturing method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 The aluminum alloy cylinder bottom structure shown in a has an outer diameter of 2712mm, a cylinder wall thickness of 5mm, a reinforcement rib structure width of 15mm, and a height of 30mm. The three reinforcement ribs are evenly distributed at 60°, such as figure 2As shown, the friction stir additive manufacturing method and its equipment are used for forming. The coaxially conveyed bar material 23 enters the hollow stirring tool 13, and a huge forging pressure is generated between the substrate and the substrate under the action of the downward force F1. At the same time, the hollow stirring tool 13 rotates at a high speed to drive The square bar 23 rubs against the substrate 15 to generate heat, and then plasticizes. The plasticized material forms a surfacing layer 14 under the action of the shoulder forging pressure F2 of the stirring tool. The friction stir additive manufacturing equipment includes at least a column 4, a longitudinal guide rail 5, ...

Embodiment 2

[0047] Such as figure 1 The structure of the aluminum alloy cylinder section shown in b has an outer diameter of 3020 mm, a cylinder wall thickness of 10 mm, a rib structure width of 15 mm, a circumferential rib height of 50 mm, and eight triangular plate ribs in the radial direction at 45° evenly distributed, with a height of 30 mm. figure 2 As shown, the friction stir additive manufacturing method and its equipment are used for forming. The coaxially conveyed bar material 23 enters the hollow stirring tool 13, and a huge forging pressure is generated between the substrate and the substrate under the action of the downward force F1. At the same time, the hollow stirring tool 13 rotates at a high speed to drive The square bar 23 rubs against the substrate 15 to generate heat, and then plasticizes. The plasticized material forms a surfacing layer 14 under the action of the shoulder forging pressure F2 of the stirring tool. The friction stir additive manufacturing equipment incl...

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 provides a large thin-wall cylinder structure reinforcing rib characteristic stirring friction additive manufacturing method and equipment. The stirring friction additive manufacturing equipment based on the principle of coaxially conveying bars into a hollow stirring tool is used for forming each layer of reinforcing ribs on existing barrel bottoms, barrel sections and other thin-wall structures, a complete reinforcing rib structure is prepared through layer-by-layer stacking from low to high, and a thin wall means that the thickness of a cylinder structure is not smaller than 1 mm. The method is suitable for a structure with the ratio of the thickness of the reinforcing ribs to the thickness of a cylinder wall exceeding 1: 1, especially forming of a special-shaped reinforcing rib structure subjected to topological optimization and belongs to the field of rapid forming and manufacturing of spaceflight large light material structural parts. The thin-wall cylinder reinforcing rib structure prepared through the method is small in grain size, the mechanical performance reaches the same-component forge piece level, a base material is free of a heat affected zone weak area, the product development period is short, the material utilization rate is increased, and the machining efficiency of the spaceflight large light structural parts can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, and in particular relates to a friction stir additive manufacturing method and equipment for a large thin-walled cylindrical structure reinforcement rib of an aerospace vehicle. Background technique [0002] At present, most launch vehicles are large-scale thin-walled and high-reinforced cylinder structures. The traditional method of the cylinder section structure is mostly formed by piecewise processing and welding, and the bottom structure of the cylinder is formed by integrated spinning or melon petal piecewise processing and welding. The low-height reinforcing ribs on the cylinder structure are generally obtained by cutting thick plates, which causes a lot of material waste and a lot of machining man-hours, and also increases the difficulty of raw material preparation. Higher ribs can be spliced ​​and added by fusion welding or stir welding, but when the wall thickness of the ribs i...

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
IPC IPC(8): B23K20/12
CPCB23K20/1215B23K20/129Y02P10/25
Inventor 刘正武赵凯杨天豪孙立凡时云孙靖封小松郭立杰邓文敬
Owner SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com