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Valve core

A valve core and main body technology, applied in control valves, functional valve types, engine components, etc., can solve problems such as metal valve cores are easy to corrode, rubber valve cores are easy to age, and tire temperature rises, so as to reduce corrosion sensitivity and improve Exfoliation corrosion resistance, corrosion rate reduction effect

Inactive Publication Date: 2016-03-02
NINGBO YINZHOU YINXIN ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the rubber valve core is easy to age, and the metal valve core is also easy to corrode due to the influence of the use environment
Therefore, when the vehicle is driving, it will cause a tire blowout due to the burst of the valve core vacuum nozzle, which will cause the car to roll over and cause a car accident; this situation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] First, according to the composition and mass percentage of Example 1 in Table 1, the ingredients are formulated, wherein the rare earth element is La, and the whiskers are aluminum borate whiskers. Then the raw materials are smelted and cast into aluminum rods, the casting temperature is 700°C, and the casting speed is 80mm / min. Subsequently, the cast aluminum rod was subjected to homogenization annealing, the temperature of the homogenization annealing was 450° C., and the holding time was 12 hours. The aluminum rod is then extruded at a temperature of 400°C.

[0038] Secondly, the extruded aluminum rod is processed into a valve core blank through a multi-station cold heading car.

[0039] Finally, the valve core blank is subjected to solution treatment, and the solution treatment is a gradient solution treatment. It is kept at 460°C for 5 minutes, when the temperature is raised to 470°C, it is kept for 5 minutes, and when the temperature is raised to 480°C, it is kep...

Embodiment 2

[0041]First, according to the composition and mass percentage of Example 2 in Table 1, the ingredients are formulated, wherein the rare earth element is Ce, and the whiskers are aluminum borate whiskers. Then the raw materials are smelted and cast into aluminum rods, the casting temperature is 710° C., and the casting speed is 83 mm / min. Subsequently, the cast aluminum rod was subjected to homogenization annealing, the temperature of the homogenization annealing was 460° C., and the holding time was 11 hours. The aluminum rod is then extruded at a temperature of 410°C.

[0042] Secondly, the extruded aluminum rod is processed into a valve core blank through a multi-station cold heading car.

[0043] Finally, the valve core blank is subjected to solution treatment, and the solution treatment is gradient solution treatment. It is kept at 460°C for 6 minutes, when the temperature is raised to 470°C, it is kept for 6 minutes, and when the temperature is raised to 480°C, it is kep...

Embodiment 3

[0045] First, according to the composition and mass percentage of Example 3 in Table 1, the ingredients are formulated, wherein the rare earth element is Y, and the whiskers are aluminum borate whiskers. Then the raw materials are smelted and cast into aluminum rods, the casting temperature is 720°C, and the casting speed is 85mm / min. Subsequently, the cast aluminum rod was subjected to homogenization annealing, the temperature of the homogenization annealing was 465° C., and the holding time was 11 h. The aluminum rod is then extruded at a temperature of 420°C.

[0046] Secondly, the extruded aluminum rod is processed into a valve core blank through a multi-station cold heading car.

[0047] Finally, the valve core blank is subjected to solution treatment, which is gradient solution treatment, and is kept at 460°C for 8 minutes, when the temperature is raised to 470°C, it is kept for 8 minutes, and when the temperature is raised to 480°C, it is kept for 13 minutes. Then per...

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Abstract

The invention relates to a valve core. The valve core comprises a valve core body made of aluminum alloy. The aluminum alloy is composed of, by mass, 1.0%-1.5% of Cu, 0.3%-0.5% of Mn, 1.3%-1.6% of Mg, 0.10%-0.25% of Cr, 5.0%-6.0% of Zn, 0.05%-0.1% of Ti, 0.05%-0.1% of Bi, 0.5%-0.8% of Co, 0.1%-0.15% of Sc, 0.13%-0.18% of Zr, 0.01%-0.05% of Sr, 0.3%-0.5% of rare earth elements, 3%-8% of crystal whiskers, and the balance Al and inevitable impurity elements. The valve core is made of the aluminum alloy and has the advantages of being light, high in strength, resistant to corrosion and the like. Besides, a cold heading process is added to a manufacturing method of the valve core, so that the material utilization rate is increased.

Description

technical field [0001] The invention relates to an air valve device, in particular to an air valve core, and belongs to the technical field of air pressure control valve parts. Background technique [0002] Valve core, also known as airtight core, is a one-way valve. When inflating the tire, the compressed air in the air cylinder enters the valve core from the hollow part, "tops" the elastic rubber tube, and the air enters the tire; when not inflating, the elastic rubber tube tightens to cover the small hole on the side , so that air cannot flow back from the tire. [0003] In the prior art, the main body of the valve core is a small cylinder with a hollow upper end and a solid lower end. A small hole is opened on the side of the lower end to communicate with the hollow part, and a section of elastic thin rubber tube is put on the bottom to form the valve core. overall. [0004] At present, the valve core is mainly made of rubber and metal materials. Among them, the rubb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22F1/053F16K15/20
Inventor 李再裕李洁琼
Owner NINGBO YINZHOU YINXIN ALUMINUM CO LTD
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