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

CFRP/aluminum alloy hot forming quenching aging co-solidification integrated forming method

A quenching aging, aluminum alloy technology, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problem of inability to achieve sufficient solid solution of alloying elements in aluminum alloy sheets, failure to meet the rapid integrated forming of composite structures, and reduce the utilization of thermoforming molds efficiency and other issues, to achieve the effect of omitting the bonding process, avoiding thermal distortion, and improving utilization

Active Publication Date: 2021-06-01
SHANGHAI JIAOTONG UNIV
View PDF19 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses alternating current to heat the CFRP / aluminum alloy laminate. The heating temperature and time range cannot achieve sufficient solid solution of the alloy elements in the aluminum alloy sheet, and the aluminum alloy cannot be supersaturated in solid solution during the subsequent aging and quenching process. The strengthening phase in the prepreg precipitates, so that the strengthening effect cannot be achieved. In addition, the higher heating temperature may cause damage or premature curing of the CFRP prepreg under the action of thermal load. The laminate is heated by electric heating. It will bring additional energy consumption; on the other hand, in this method, the stamping forming of the laminate and the aging heat treatment of the aluminum alloy are carried out in two steps, and the aging heat treatment of the laminate in the mold will seriously reduce the utilization rate of the thermoforming mold , unable to meet the needs of rapid integrated forming of composite structures

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
  • CFRP/aluminum alloy hot forming quenching aging co-solidification integrated forming method
  • CFRP/aluminum alloy hot forming quenching aging co-solidification integrated forming method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040]This example provides a CFRP / aluminum alloy composite structure composed of aluminum alloy 6063T1 with an aging time of about 2 hours and conventional cured prepreg USN10000 (produced by Weihai Guangwei Composite Materials Co., Ltd.). The temperature change curve adopted by the aging-co-curing integrated forming method is as follows: figure 1 As shown, the process mainly includes the following stages:

[0041] (1) The A-B section is the solid solution stage. The aluminum alloy is placed in a heating furnace and heated at 450°C (T 1 ) under the condition of heating for 180min, so that the precipitated phase in the alloy is fully dissolved;

[0042] (2) The B-C section is the transfer stage, and the aluminum alloy sheet is quickly transferred to the water-cooled mold to avoid a sharp drop in the temperature of the sheet and affect its formability;

[0043] (3) The C-D section is the forming stage, and the mold is formed within 5s. The deformation resistance and springbac...

Embodiment 2

[0051] This example provides a CFRP / aluminum alloy composite structure composed of aluminum alloy 2219 with an aging time of more than 2 hours and a fast-curing prepreg CFSJ-1000Z (produced by Shandong Jiangshan Fiber Technology Co., Ltd.). The temperature change curve adopted by the aging-co-curing integrated forming method is as follows: figure 2 As shown, the process mainly includes the following stages:

[0052] (1) The A-B section is the solid solution stage. The aluminum alloy is placed in a heating furnace and heated at 575°C (T 1 ) under the condition of heating for 30min, so that the precipitated phase in the alloy is fully dissolved;

[0053] (2) The B-C section is the transfer stage, and the aluminum alloy sheet is quickly transferred to the water-cooled mold to avoid a sharp drop in the temperature of the sheet and affect its formability;

[0054] (3) The C-D section is the forming stage, and the mold is formed within 5s. The deformation resistance and springbac...

Embodiment 3

[0064] This example provides a CFRP / aluminum alloy composite structure composed of aluminum alloy 6061 with an aging time of more than 2 hours and a fast-curing prepreg CFSJ-1000Z (produced by Shandong Jiangshan Fiber Technology Co., Ltd.). The temperature change curve adopted by the aging-co-curing integrated forming method is as follows: figure 2 As shown, the process mainly includes the following stages:

[0065] (1) Section A-B is the solid solution stage. Put the aluminum alloy in a heating furnace and heat it at 525°C for 60 minutes to fully dissolve the precipitated phase in the alloy;

[0066] (2) The B-C section is the transfer stage, and the aluminum alloy sheet is quickly transferred to the water-cooled mold to avoid a sharp drop in the temperature of the sheet and affect its formability;

[0067] (3) The C-D section is the forming stage, and the mold is formed within 5s. The deformation resistance and springback of the aluminum alloy sheet are small at high tempe...

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

No PUM Login to View More

Abstract

The invention discloses a CFRP / aluminum alloy thermal forming quenching aging co-solidification integrated forming method, comprising the following steps: first placing the aluminum alloy in a heating furnace for solid solution treatment and quickly transferring it to a water-cooled mold for forming and quenching; then Roughen the surface of aluminum alloy and laminate with carbon fiber prepreg; finally complete the co-curing process of CFRP / aluminum alloy and the aging process of aluminum alloy through hot stamping die, or complete the co-curing process of CFRP / aluminum alloy through hot stamping die curing process, and then transfer the composite structure to a heating furnace to complete the aging process. The method can effectively improve the strength and forming precision of the composite structure, shorten the process flow, and improve the forming efficiency.

Description

technical field [0001] The invention relates to a CFRP / aluminum alloy thermoforming quenching aging co-curing integrated forming method, in particular to a CFRP / aluminum alloy composite structure thermoforming-quenching-aging-co-curing integrated forming method, which belongs to the technical field of plate forming. Background technique [0002] Safety, environmental protection and energy saving are the themes of the development of the current automobile manufacturing industry, and automobile lightweight is one of the important measures to achieve energy saving and emission reduction. Relevant experimental studies have shown that for every 10% reduction in vehicle mass, fuel consumption can be reduced by 6%-8%, and exhaust emissions can be reduced by 4%. Automobile lightweight is mainly achieved through structural optimization design, lightweight material application and advanced manufacturing technology. Among them, the use of lightweight materials is an important way to r...

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): B29C70/34B29C70/54C21D9/00B29L31/30
CPCB29C70/345B29C70/54B29L2031/3005C21D9/0081
Inventor 何霁郭聪李淑慧韩国丰
Owner SHANGHAI JIAOTONG UNIV
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