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Laser connection method for metal/carbon fiber reinforced thermoplastic composite material

A composite material and connection method technology, which is applied in the field of composite processing of metal/carbon fiber reinforced thermoplastic composite materials, can solve the problems of weak chemical bonding strength, low joint strength, and inconspicuous interface mechanical fitting.

Inactive Publication Date: 2020-12-25
HARBIN INST OF TECH AT WEIHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low joint strength caused by the inconspicuous interfacial mechanical fitting and weak chemical bonding strength in the existing laser connection of metal and CFRTP, the present invention provides a laser connection method for metal / carbon fiber reinforced thermoplastic composite materials

Method used

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  • Laser connection method for metal/carbon fiber reinforced thermoplastic composite material
  • Laser connection method for metal/carbon fiber reinforced thermoplastic composite material
  • Laser connection method for metal/carbon fiber reinforced thermoplastic composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] This embodiment provides a metal / carbon fiber reinforced thermoplastic composite material laser connection method, and uses this method to complete the laser connection of TC4 titanium alloy and carbon fiber reinforced polyether ether ketone (CF-PEEK), specifically including the following steps:

[0033] Step 1. Place the TC4 titanium alloy substrate and CF-PEEK plate to be connected in an ultrasonic cleaning container, and clean them in a mixed solution of acetone and alcohol for 60 seconds to remove surface oil, and then place the cleaned CF-PEEK plate on the Dry in an oven at 80°C for 2 hours, place the TC4 titanium alloy substrate in a mixed solution consisting of 80% distilled water, 15% nitric acid and 5% hydrofluoric acid by volume, and wash for 30 seconds to remove the surface oxide film, then Blow dry with a hair dryer;

[0034] The nanosecond laser processing system is used to ablate the surface of the above-mentioned TC4 substrate to produce a grid-like micro...

Embodiment 2

[0045] This embodiment provides a metal / carbon fiber reinforced thermoplastic composite material laser connection method, and uses this method to complete the laser connection of 304 stainless steel and carbon fiber reinforced nylon (CF-PA), specifically including the following steps:

[0046] Step 1. Place the 304 stainless steel substrate and the CF-PA plate to be connected in an ultrasonic cleaning container, and wash them in a mixed solution of acetone and alcohol for 60 seconds to remove surface oil, and then place the cleaned CF-PA plate in Dry in a drying oven at 100°C for 4 hours, place the 304 stainless steel substrate in a mixed solution composed of 80% distilled water, 15% nitric acid and 5% hydrofluoric acid by volume, and clean it for 60 seconds to remove the surface oxide film, and then use a hair dryer blow dry;

[0047] A nanosecond laser processing system was used to ablate the surface of the above-mentioned 304 stainless steel substrate to produce a groove-li...

Embodiment 3

[0053] This embodiment provides a metal / carbon fiber reinforced thermoplastic composite material laser connection method, and uses this method to complete the laser connection of 6061 aluminum alloy and carbon fiber reinforced polyethylene terephthalate (CF-PET), specifically including Follow the steps below:

[0054] Step 1. Place the 6061 aluminum alloy substrate and CF-PET plate to be connected in an ultrasonic cleaning container, and clean them for 30 seconds in a mixed solution of acetone and alcohol in any proportion to remove surface oil, and then place the cleaned CF-PET plate on the Dry in an oven at 80°C for 2 hours, place the 6061 aluminum alloy substrate in a mixed solution consisting of 80% distilled water, 15% nitric acid and 5% hydrofluoric acid by volume, and wash for 40 seconds to remove the surface oxide film, then Blow dry with a hair dryer;

[0055] The nanosecond laser processing system is used to ablate the surface of the above-mentioned 6061 aluminum al...

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Abstract

The invention relates to a laser connection method for a metal / carbon fiber reinforced thermoplastic composite material, and belongs to the technical field of metal / carbon fiber reinforced thermoplastic material processing. The invention provides the laser connection method for the metal / carbon fiber reinforced thermoplastic composite material in order to solve the problems of unobvious mechanicalembedment and weak chemical bonding between metal and a CFRTP interface. The laser connection method for the metal / carbon fiber reinforced thermoplastic composite material comprises the following steps of preparing a microstructure on the surface of a metal substrate, generating a micron-order porous metal oxide film on the surface of the microstructure in situ, stacking and fixing a CFRTP plateand a to-be-connected part of the treated metal substrate, and completing laser connection under a certain pressure to obtain a reinforced joint. According to the laser connection method for the metal / carbon fiber reinforced thermoplastic composite material provided by the invention, by regulating and controlling the morphology and the chemical state of the laser connection interface, wetting andspreading of molten CFRTP on the surface of the metal substrate are improved, the metal substrate surface microstructure and the porous film are filled with the molten CFRTP, mechanical embedment is promoted, and chemical bonding formation is increased, so that the bonding strength of laser connection of the metal substrate and the CFRTP plate is improved.

Description

technical field [0001] The invention belongs to the technical field of composite processing of metal / carbon fiber reinforced thermoplastic composite materials, and in particular relates to a laser joining method of metal / carbon fiber reinforced thermoplastic composite materials. Background technique [0002] As an important way to achieve lightweight, the connection of dissimilar lightweight materials has been widely used in advanced manufacturing fields such as aerospace, rail transit, and automobiles. Lightweight alloys have high specific strength, corrosion resistance and heat resistance, and have broad application prospects in aviation manufacturing and locomotive industries. Carbon fiber-reinforced resin-based thermoplastic composites-CFRTP has become a replacement material for further lightweight engineering applications due to its high specific strength, specific modulus, and impact resistance, and is used in the main load-bearing components of engineering application...

Claims

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Application Information

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IPC IPC(8): B29C65/16B29C37/00B08B3/12C25D11/26C25D11/34C25D11/30C25D11/16C23G1/08C23G1/10C23G1/12C23G5/032B29L7/00
CPCB29C65/16B29C66/0222B29C66/026B29C66/028B29C66/45B08B3/12C25D11/026C25D11/26C25D11/34C25D11/30C25D11/16C23G1/086C23G1/106C23G1/12C23G1/125C23G5/032
Inventor 檀财旺苏健晖吴来军陈波宋晓国冯吉才
Owner HARBIN INST OF TECH AT WEIHAI
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