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A kind of alloy material used in aircraft toilet valve

A technology of alloy materials and toilets, which is applied in the field of alloy materials for aircraft toilet valves, can solve problems such as limited research, and achieve the effects of improving corrosion resistance, improving hardness and wear resistance, and increasing strength and hardness

Inactive Publication Date: 2017-10-10
HANGZHOU POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current research on alloy materials for valves used in aircraft toilets is very limited. How to select suitable alloy materials to prepare valves for aircraft toilets is a major problem faced by technicians in this industry.

Method used

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Comparison scheme
Effect test

Embodiment 1

[0038] A kind of alloy material used in aircraft toilet valve

[0039] Raw material chemical element composition mass percentage:

[0040] Carbon 0.63%, Manganese 0.88%, Phosphorus 0.040%, Sulfur 0.03%, Silicon 0.35%, Chromium 18.0%, Molybdenum 0.21%, Nickel 11.0%, Copper 0.28%, Zinc 0.39%, Cobalt 17.5%, Strontium 10%, Lanthanum 0.17% %, boron 1.50%, aluminum 0.29%, rhodium 0.018%, and the rest is iron.

[0041] The content of carbon is 0.63%, which ensures the basic mechanical strength of the alloy, but the ductility and toughness of the valve need to be improved, 0.17% of lanthanum, but the addition of lanthanum reduces the wear resistance of the valve, in order not to reduce the wear resistance , add 17.5% cobalt and 11.0% nickel, so that the ductility, toughness and wear resistance of the valve are further improved. Since iron, nickel and cobalt are infinitely soluble, α, γ and ε phases with different lattice structures can be obtained , In addition, carbon and cobalt fo...

Embodiment 2

[0046] A kind of alloy material used in aircraft toilet valve

[0047] Raw material chemical element composition mass percentage:

[0048] Carbon 0.60%, Manganese 0.65%, Phosphorus 0.035%, Sulfur 0.03%, Silicon 0.15%, Chromium 18.0%, Molybdenum 0.15%, Nickel 9.0%, Copper 0.21%, Zinc 0.31%, Cobalt 17.0%, Strontium 8.0%, Lanthanum 0.10% %, boron 0.50%, aluminum 0.10%, rhodium 0.01%, and the rest is iron.

[0049] The content of carbon is 0.60%, which ensures the basic mechanical strength of the alloy, but the ductility and toughness of the valve need to be improved. 0.10% lanthanum, but the addition of lanthanum reduces the wear resistance of the valve. In order not to reduce the wear resistance , add 17.0% cobalt and 9.0% nickel, so that the ductility, toughness and wear resistance of the valve are further improved. Since iron, nickel and cobalt are infinitely soluble, α, γ and ε phases with different lattice structures can be obtained , In addition, carbon and cobalt form a ...

Embodiment 3

[0054] A kind of alloy material used in aircraft toilet valve

[0055] Raw material chemical element composition mass percentage:

[0056] Carbon 1.0%, Manganese 1.10%, Phosphorus 0.045%, Sulfur 0.04%, Silicon 0.355%, Chromium 20.0%, Molybdenum 0.25%, Nickel 12.0%, Copper 0.30%, Zinc 0.42%, Cobalt 20.0%, Strontium 11.0%, Lanthanum 0.30% %, boron 3.0%, aluminum 0.50%, rhodium 0.03%, and the rest is iron.

[0057] The content of carbon is 1.0%, which ensures the basic mechanical strength of the alloy, but the ductility and toughness of the valve need to be improved. 0.30% lanthanum, but the addition of lanthanum reduces the wear resistance of the valve. In order not to reduce the wear resistance , add 20.0% cobalt and 12.0% nickel, so that the ductility, toughness and wear resistance of the valve are further improved. Since iron, nickel and cobalt are infinitely soluble, α, γ and ε phases with different lattice structures can be obtained , In addition, carbon and cobalt form a...

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Abstract

The invention provides an alloy material used for an aircraft toilet valve. The components of the alloy material include, by mass, 0.6-1.0% of carbon, 0.65-1.10% of manganese, 0.035-0.045% of phosphorus, 0.03-0.04% of sulphur, 0.15-0.355% of silicon, 18.0-20.0% of chromium, 0.15-0.25% of molybdenum, 9.0-12.0% of nickel, 0.21-0.30% of copper, 0.31-0.42% of zinc, 17.0-20.0% of cobalt, 8.0-11.0% of strontium, 0.10-0.30% of lanthanum, 0.50-3.0% of boron, 0.10-0.50% of aluminum, 0.01-0.03% of rhodium and the balance iron. Fusing and centrifugal casting are carried out under a vacuum condition, and hot isostatic pressure treatment is carried out, so that a finished product is obtained. The alloy material used for the aircraft toilet valve has good anti-corrosion performance and is resistant to air pressure changes and abrasion.

Description

technical field [0001] The invention belongs to the field of valve alloy materials, and in particular relates to an alloy material used for aircraft toilet valves. Background technique [0002] Due to the particularity of the means of transportation on the plane, the problem faced by the toilet of the plane is that it is inconvenient to use the flush toilet filled with water, because the water may splash out every time there is a bump. There is no way to clean the toilet with water and a siphon or gravity. At this time, people have designed an active vacuum system to replace the passive siphon, so the aircraft toilet is also called a vacuum toilet. In 1975, pilot James Campbell invented the loud vacuum toilet we have today. The vacuum toilet consumes less water, can require a smaller diameter of the downpipe, and has no restrictions on the flushing direction. The vacuum system does not need to consider the gravity of the earth, and does not need to prevent the downpipe fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/44C22C38/42C22C38/52C22C38/54C22C38/02C22C38/04C22C38/06C22C33/04
CPCC22C33/04C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/52C22C38/54
Inventor 罗晓晔
Owner HANGZHOU POLYTECHNIC
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