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Airtight oil tank

A technology for sealing fuel tanks and fuel tanks, which is applied to the fuel tanks of power plants, substructures, and vehicle components, and can solve problems such as complex aluminum alloys, easy cracks, and poor elongation

Active Publication Date: 2018-06-12
SAIKESI HYDRAULIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aluminum alloys are prone to cracks during the casting process.
[0004] In view of the shortcomings of traditional aluminum alloys such as many cracks and poor elongation, Publication No. 106048379A discloses a method to improve the toughness and elongation of the product by adding rare earth, strontium and other elements into the aluminum alloy.
However, only improving the toughness, elongation and other properties of aluminum alloys cannot make aluminum alloys cope with complex environments.

Method used

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  • Airtight oil tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Ingredients: Weigh raw materials according to the composition and mass percentage of aluminum alloy, including: Si: 0.25%, Mn: 0.1%, Cr: 0.2%, Ni: 0.3%, Mo: 0.2%, Ti: 0.08%, C: 0.3 %, the balance is Al and impurities, wherein Si, Ti, C are weighed in the form of SiC, TiC granular compounds, impurities include H<0.001%, S<0.001%, N<0.001%, O<0.001%, Mn , Cr, Ni, Mo, Al are smelted directly into alloy liquid 1.

[0037] Purification: raise the temperature of alloy liquid 1 to 900°C, stir with a silicon rod, add SiC and TiC particles with a particle size of 8 μm while stirring, and simultaneously inject helium gas to obtain alloy liquid 2.

[0038] Sand core preparation: Mix and roll the original sand, binder and additives to form sand powder, in which the binder is calcium chloride and magnesium chloride, then fill the sand powder into the mold, and fill the mold with argon gas until the pressure is The semi-finished oil tank sand core is obtained at 3 atmospheres, and t...

Embodiment 2

[0042] Ingredients: Weigh raw materials according to the composition and mass percentage of aluminum alloy, including: Si: 0.2%, Mn: 0.05%, Cr: 0.1%, Ni: 0.2%, Mo: 0.1%, Ti: 0.05%, C: 0.1 %, the balance is Al and impurities, wherein Si, Ti, C are weighed in the form of SiC, TiC granular compounds, impurities include H<0.001%, S<0.001%, N<0.001%, O<0.001%, Mn , Cr, Ni, Mo, Al are smelted directly into alloy liquid 1.

[0043]Purification: raise the temperature of alloy liquid 1 to 900°C, stir with a silicon rod, add SiC and TiC particles with a particle size of 8 μm while stirring, and simultaneously inject helium gas to obtain alloy liquid 2.

[0044] Sand core preparation: mix and roll the original sand, binder and additives to form sand powder, in which the binder is calcium chloride and magnesium chloride, then fill the sand powder into the mold, and fill the mold with argon until the pressure is The semi-finished oil tank sand core is obtained at 3 atmospheres, and then t...

Embodiment 3

[0048] Ingredients: Weigh raw materials according to the composition and mass percentage of aluminum alloy, including: Si: 0.3%, Mn: 0.15%, Cr: 0.3%, Ni: 0.4%, Mo: 0.3%, Ti: 0.1%, C: 0.5 %, the balance is Al and impurities, wherein Si, Ti, C are weighed in the form of SiC, TiC granular compounds, impurities include H<0.001%, S<0.001%, N<0.001%, O<0.001%, Mn , Cr, Ni, Mo, Al are smelted directly into alloy liquid 1.

[0049] Purification: raise the temperature of alloy liquid 1 to 900°C, stir with a silicon rod, add SiC and TiC particles with a particle size of 8 μm while stirring, and simultaneously inject helium gas to obtain alloy liquid 2.

[0050] Sand core preparation: mix and roll the original sand, binder and additives to form sand powder, in which the binder is calcium chloride and magnesium chloride, then fill the sand powder into the mold, and fill the mold with argon until the pressure is The semi-finished oil tank sand core is obtained at 3 atmospheres, and then t...

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Abstract

The invention discloses an airtight oil tank and belongs to the technical field of metal materials. The airtight oil tank comprises an oil tank body and a covering film on the surface of the oil tankbody. The oil tank body is composed of an aluminum alloy comprising the following components of, by mass, 0.2%-0.3% of Si, 0.05%-0.15% of Mn, 0.1%-0.3% of Cr, 0.2%-0.4% of Ni, 0.1%-0.3% of Mo, 0.05%-0.1% of Ti, 0.1%-0.5% of C and the balance Al and impurities. The Si element, the Ti element and the C element are added in the form of SiC and TiC so that the impurity content can be decreased effectively. The covering film on the surface of the oil tank body is made of carbon nanotubes or C60. The isomer of graphite has both of the inertia of the C element and the active property of a nano-scalematerial and is easily combined with the aluminum alloy, so that the specific strength, specific stiffness and the effects of low expansion, high thermal conductivity and the like of the aluminum alloy are improved; and through cooperation of a developed novel sand core, the situation that the sand core is easy to remove after integrated forming of the oil tank is facilitated.

Description

technical field [0001] The invention relates to a sealed oil tank, which belongs to the field of metal materials. Background technique [0002] With the rapid development of domestic automobile, aircraft and other industries, the reliability control of machinery is becoming more and more strict. In order to improve the reliability of the machine, the stability requirements of the fuel tank as the core part of the machine are getting higher and higher, and the stability of the fuel tank depends on the main structure of the fuel tank and the materials that make up the fuel tank. Now the fuel tanks used in automobiles and airplanes are generally welded by plates, and the processing accuracy is not high. There may be a risk of gaps in the welded parts after long-term use, which not only affects the stability of the transmission of the operating system, but also the existence of gaps will cause safety hazards. [0003] The material composition of the fuel tank plays a decisive ...

Claims

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Application Information

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IPC IPC(8): B60K15/03B64D37/06C22C21/00C22C21/02C22C1/02
CPCB60K15/03B60K2015/03486B64D37/06C22C1/026C22C21/00C22C21/02Y02T90/40
Inventor 高志明
Owner SAIKESI HYDRAULIC TECH CO LTD
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