Reinforced composite material for main landing gear of light aircraft and manufacturing method of reinforced composite material
A technology for enhancing composite materials and light aircraft, applied in the direction of manufacturing tools, metal material coating process, furnace type, etc. The heat preservation time, high material utilization rate, and the effect of reducing the heating temperature
Pending Publication Date: 2022-03-04
GUIZHOU GENERAL AVIATION
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Problems solved by technology
[0003] At present, the production and manufacturing of landing gear on the market is limited by insufficient equipment conditions and technical capabilities, low material utilization rate, long production cycle, high cost, and it is difficult to obtain sufficient mechanical properties on the basis of integrated molding.
[0004] Large-scale overall refinement is the development trend of landing gear outer cylinder forgings. Good preform shape is the key to ensure the overall forming of forgings. At the same time, subsequent heat treatment of forgings is a necessary means to realize the comprehensive mechanical properties of forgings. This technique has not been applied
Method used
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Embodiment 1
[0033] ①Prepare 55CrSiA spring steel plates with a maximum thickness of 1.5mm-2.5mm compared to the design size; prepare two low-temperature resistance furnaces, two medium-temperature resistance furnaces, one glow ion metal infiltration furnace, and a forging die for hot bending dies with upper and lower dies One set, one set of forging molds with upper and lower dies for hot rolling die pressing, sufficient amount of argon gas, sufficient amount of alloy 6B cobalt-based alloy, sufficient amount of polyvinylpyrrolidone solution with 3% solute mass, and sufficient amount of polyvinyl alcohol with 3% solute mass Solution, sufficient amount of 30% glycidoxypropyl trimethoxysilane hydrolysis resin, sufficient amount of benzotriazole, sufficient amount of water-based polyurethane resin, sufficient amount of glutaraldehyde, sufficient amount of polyurethane resin leveling agent, sufficient amount Polyurethane resin defoamer, enough polyurethane resin surfactant, enough deionized wat...
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Abstract
The invention discloses a reinforced composite material for a light aircraft main landing gear and a manufacturing method of the reinforced composite material. The light aircraft main landing gear is formed by machining a 55CrSiA spring steel plate after integral forging forming, the surface hardness of the light aircraft main landing gear after forging and heat treatment is 45 HRC to 51 HRC, and the light aircraft main landing gear is integrally divided into an upper section connected with an aircraft body and a lower section connected with the aircraft body; the lower section is connected with a tire structure, and the middle section is connected with the upper section and the lower section and is in a shape with a wide upper part, a narrow lower part, a thick upper part and a thin lower part; a cobalt, chromium and titanium composite coating with the infiltrated layer depth of 15-18 microns is infiltrated into the surface, and cobalt, chromium and titanium are from 6B cobalt-based alloy; and a layer of polyurethane-based corrosion-resistant coating formed by dip-coating and drying is also cured on the surface of the main undercarriage. The light aircraft main landing gear is integrally forged and formed, and is excellent in mechanical property, high in surface strength, good in overall toughness and high in surface corrosion resistance.
Description
technical field [0001] The invention relates to the technical field of metal composite material processing, in particular to a reinforced composite material for a light aircraft main landing gear and a manufacturing method thereof. Background technique [0002] The landing gear is one of the key parts of the aircraft. It is the main force-bearing member for the aircraft to slide on the ground when it takes off and lands. It is used to support the weight of the aircraft and absorb impact energy. It is required to have comprehensive mechanics such as high strength and high toughness. performance. [0003] At present, the production and manufacturing of landing gear on the market is limited by insufficient equipment conditions and technical capabilities, low material utilization rate, long production cycle, high cost, and it is difficult to obtain sufficient mechanical properties on the basis of integrated molding. [0004] Large-scale overall refinement is the development tre...
Claims
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IPC IPC(8): B21J5/00B64C25/02C21D1/00C21D9/00C23C10/14
CPCB21J5/002B64C25/02C21D1/00C21D9/0068C23C10/14
Inventor 黄忠才
Owner GUIZHOU GENERAL AVIATION