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Integrated forming die and method of fiber-metal super-hybrid T-shaped reinforcing rib structure

A fibrous metal and ultra-hybrid technology, applied in chemical instruments and methods, household appliances, and other household appliances, can solve the problems of unfavorable civil transportation tools such as efficient integrated molding, and achieve high production efficiency.

Active Publication Date: 2019-12-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main connection technology used is secondary bonding or riveting, which will not be conducive to the efficient integrated molding of civil vehicles

Method used

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  • Integrated forming die and method of fiber-metal super-hybrid T-shaped reinforcing rib structure
  • Integrated forming die and method of fiber-metal super-hybrid T-shaped reinforcing rib structure
  • Integrated forming die and method of fiber-metal super-hybrid T-shaped reinforcing rib structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The first step is aluminum alloy thin plate (AA7475-T6, 0.4mm×250mm×250mm) blank preparation and surface treatment. The aluminum alloy surface treatment method includes two steps: the first step is the surface nano treatment, including: (1) alkali washing: NaOH and Na 2 CO 3 Each 30g / L mixed solution, the temperature is 50-60°C, the treatment time is 0.5-1min, and the tap water is rinsed for 2-5min; (2) pickling: HNO 3 The concentration is 300-500g / L, the treatment time is 2-5min, rinse with tap water for 2-5min; (3) 25% ammonia solution, the treatment time is 20min; the second step is nitrogen plasma surface treatment, where the voltage is 5000w, nitrogen gas flow The temperature is 600sccm, the temperature is 40°C, the working vacuum is 30Pa, and the processing time is 10min;

[0038] In the second step, a surface-treated aluminum alloy sheet is placed in a mold with a T-shaped groove (width 2.5mm). The length of the T-shaped reinforcement is the same, the bottom o...

Embodiment 2

[0044] The first step is aluminum alloy thin plate (AA2024-T3, 0.3mm×200mm×200mm) blank preparation and surface treatment. The aluminum alloy surface treatment method includes two steps: the first step is the surface nano treatment, including: (1) alkali washing: NaOH and Na 2 CO 3 Each 30g / L mixed solution, the temperature is 50-60°C, the treatment time is 0.5-1min, and the tap water is rinsed for 2-5min; (2) pickling: HNO 3 The concentration is 300-500g / L, the treatment time is 2-5min, rinse with tap water for 2-5min; (3) 25% ammonia solution, the treatment time is 20min; the second step is nitrogen plasma surface treatment, where the voltage is 5000w, nitrogen gas flow The temperature is 600sccm, the temperature is 40°C, the working vacuum is 30Pa, and the processing time is 10min;

[0045] In the second step, a surface-treated aluminum alloy sheet is placed in a mold with a T-shaped groove (width 2mm). The length of the shaped reinforcement is the same, the bottom of th...

Embodiment 3

[0051] The first step is aluminum alloy thin plate (AA6061-T6, 0.5mm×300mm×300mm) blank preparation and surface treatment. The aluminum alloy surface treatment method includes two steps: the first step is the surface nano treatment, including: (1) alkali washing: NaOH and Na 2 CO 3 Each 30g / L mixed solution, the temperature is 50-60°C, the treatment time is 0.5-1min, and the tap water is rinsed for 2-5min; (2) pickling: HNO 3 The concentration is 300-500g / L, the treatment time is 2-5min, rinse with tap water for 2-5min; (3) 25% ammonia solution, the treatment time is 20min; the second step is nitrogen plasma surface treatment, where the voltage is 5000w, nitrogen gas flow The temperature is 600sccm, the temperature is 40°C, the working vacuum is 30Pa, and the processing time is 10min;

[0052] In the second step, a surface-treated aluminum alloy sheet is placed in a mold with a T-shaped groove (width 3mm). The length of the shaped reinforcement is the same, the bottom of th...

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Abstract

The invention discloses an integrated forming die and method of a fiber-metal super-hybrid T-shaped reinforcing rib structure. The method includes the following steps that 1), an aluminum alloy sheetis subjected to surface treatment; 2), the aluminum alloy sheet penetrates through the bottom of a T-shaped groove to form a T-shaped opening with the shape consistent with that of the T-shaped groove, and then oil dirt left on the surface is washed away with alcohol; 3), another or multiple aluminum alloy sheets obtained after surface treatment, one or more pieces of continuous fiber reinforced thermoplastic resin prepreg and one or more thermoplastic resin adhesive films are laid on the hydraulically-formed aluminum alloy sheet according to the design requirements and sequence, and the laidstructure is sealed by a high-temperature-resistance vacuum bag film and vacuumized; 4), micron-order fiber reinforced thermoplastic resin is injected into the T-shaped opening; and 5), heat curing iscarried out. The integrated forming method of the fiber-metal super-hybrid T-shaped reinforcing rib structure is achieved. The production efficiency is high, the production cost is low, and a good thought is provided for preparation of the fiber-metal super-hybrid structure.

Description

technical field [0001] The invention relates to the fields of rail transit and automobile industry, in particular to an integrated molding die and method for a fiber-metal super-hybrid T-shaped reinforced structure, which belongs to the field of composite material preparation. Background technique [0002] Technological innovation in rail transit and automobile industry is of great significance to promote my country's economic development and industrial modernization. With the high speed of the rail transit industry and the continuous advancement of the lightweight of the automobile industry, higher requirements are put forward for the main load-bearing parts of the car body. The fiber metal laminate is an interlayer hybrid composite material formed by alternate lamination of metal sheets and fiber composite materials and solidified under a certain temperature and pressure, also known as a super-hybrid laminate. Taking GLARE (glass reinforcedaluminum laminates) as an exampl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/78B29C33/00B32B37/10B32B38/00B29L31/30
CPCB29C33/00B29C70/78B29L2031/3005B32B37/1009B32B38/00B32B38/0012
Inventor 陶杰林炎炎李华冠钱德洪王永红
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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