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A Hollow Sodium Filled Valve Based on Cross Wedge Rolled Billet

A hollow and air valve technology, which is applied in the direction of valve devices, machines/engines, mechanical equipment, etc., can solve the problems of low material utilization rate, difficult temperature and quality control, and many processes, so as to improve the cooling effect, realize lightweight, and shape The effect of simple process

Active Publication Date: 2017-11-28
HUAI JI DENG YUE VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the inner cavity of the valve has increased, the material utilization rate of this process is low, and there are many processes, which are prone to stress concentration, and the forming process of the preformed blank of the valve using the electric upsetting process is free deformation, and the temperature and quality are difficult to control.

Method used

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  • A Hollow Sodium Filled Valve Based on Cross Wedge Rolled Billet
  • A Hollow Sodium Filled Valve Based on Cross Wedge Rolled Billet
  • A Hollow Sodium Filled Valve Based on Cross Wedge Rolled Billet

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Embodiment Construction

[0021] see figure 1 , which is a structural schematic diagram of the hollow sodium-filled valve described in the present invention.

[0022] A hollow sodium-filled valve 10 based on a cross wedge rolled billet of the present invention includes a valve housing 11, a solid rod portion 12 and a disc end face plug 15; the valve housing 11 includes an integrally formed trumpet-shaped hollow disc portion 11b and a hollow rod part 11a, one end of the hollow rod part 11a of the valve housing 11 is welded to the solid rod part 12, and the cross-sectional diameter of the solid rod part 12 is the same as the outer diameter of the cross-sectional cross-section of the hollow rod part 11a; The disk end face plug 15 is welded to the opening of the hollow disk part 11b to seal the hollow disk part 11b and form an inner cavity with the valve housing 11; the inner cavity is filled with metal sodium 13.

[0023] Further, the outer surfaces of the hollow rod portion 11 a and the solid rod portio...

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Abstract

The invention discloses a hollow sodium filled valve based on a cross wedge rolled billet. The hollow sodium filled valve comprises a valve shell, a solid rod and a disc end face plug. The valve shell is preformed by a steel tube through cross wedge rolling and then is integrally formed through a die forging forming process. The valve shell comprises a trumpet-shaped hollow disc and a hollow rod which are integrally formed, and one end of the hollow rod is in friction welding with the solid rod to plug the hollow rod. The diameter of the cross section of the solid rod is equal to the outer diameter of the cross section of the hollow rod. The disc end face plug and an opening of the hollow disc are in friction welding to plug the hollow disc, and an inner cavity is formed by the disc end face plug and the valve shell. The inner cavity is filled with metallic sodium. The hollow sodium filled valve based on the cross wedge rolled billet is convenient to form and good in heat radiation performance, and materials are saved.

Description

technical field [0001] The invention belongs to an engine valve of an internal combustion engine, in particular to a hollow sodium-filled valve based on a cross wedge rolling billet. Background technique [0002] The valve is a precision part that seals the combustion chamber and controls the gas exchange of the internal combustion engine during the working process of the internal combustion engine. It is a key component to ensure the power performance, reliability and durability of the internal combustion engine. The intake valve mainly bears the mechanical load of repeated impact, and its working temperature is 300-400°C, while the exhaust valve is not only subjected to the mechanical load of impact, but also is subject to corrosion of high-temperature oxidizing gas, thermal stress, cone heat hoop stress and Due to the combined effect of gas pressure during combustion, the working temperature of the exhaust valve reaches 600-800°C, and the exhaust valve is made of austenit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L3/14
Inventor 张弢章争荣莫东强林喜佳孙歌陈刚邓海钿苏德涛黄志刚刘晋平王宝雨邱万奇
Owner HUAI JI DENG YUE VALVE CO LTD
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