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Method for detecting working temperature of valve

A technology of working temperature and valve, applied in the field of temperature measurement, can solve the problems of complexity, high cost of measurement, and inability to measure the distribution of valve temperature field

Active Publication Date: 2009-06-17
济南沃德汽车零部件有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the valve is in a dynamic state, it has been reported to use a thermocouple to measure, but the thermocouple measurement device is very complicated, the measurement cost is expensive, and only one point of temperature can be measured, and the distribution of the valve temperature field cannot be measured.

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  • Method for detecting working temperature of valve
  • Method for detecting working temperature of valve
  • Method for detecting working temperature of valve

Examples

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Embodiment 1

[0018] Embodiment 1, a method for measuring valve temperature, is characterized in that: mainly comprises the following steps:

[0019] A. Make samples, use X45CrSi93 to make exhaust valves, and make 150 small samples of bars of the same material and furnace number at the same time, and perform heat treatment at the same time, only quenching without tempering, to ensure that the quenching hardness of the valve is consistent with that of the small samples ;

[0020] B. Temper the small samples of the bar at different temperatures, measure the hardness, and draw the tempering temperature-hardness correlation curve: put the small samples of the bar in groups of 3, within the range of 480--800°C, According to the temperature difference of 20°C, the tempering time is respectively carried out at different temperatures for 2 hours, and then the plane is ground on the grinding machine, and the hardness is tested. The hardness of each bar at the temperature varies with the furnace num...

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Abstract

The invention discloses a method for measuring working temperature of a valve, belonging to a method of temperature measurement, in particular to a method for measuring temperature of material samples by combining a sampling device. According to the principle that after tempering is carried out on material after hardening, different tempering temperatures correspond to different hardness, in the invention, after hardening is simultaneously carried out on a small barstock sample and the measured valve, temperings of different temperatures are carried out to measure the hardness, a standard tempering temperature-hardness corresponding curve of the barstock is charted, and temperature conditions of various parts of the valve are obtained by measuring the hardness of various parts of the valve and comparing the measured hardness with the standard tempering temperature-degree of hardness corresponding curve. The invention well solves the problem that the working temperature of the valve can not be measured and provides a new method for the research and development of new valve products.

Description

technical field [0001] The invention belongs to a method for measuring temperature, in particular a method for measuring the temperature of a material sample combined with a sampling device. Background technique [0002] The valve is a part of the engine's valve mechanism, which ensures that the engine is opened and closed on time during operation, and fresh combustible mixture is input into the cylinder, and the exhaust gas after combustion is discharged from the cylinder in time. Measuring the exact valve operating temperature can provide data for valve design. Because the valve is in a dynamic state, it is reported to use a thermocouple to measure, but the thermocouple measurement device is very complicated, the measurement cost is expensive, and only one point of temperature can be measured, and the distribution of the valve temperature field cannot be measured. Contents of the invention [0003] The object of the present invention is to provide a method for indirect ...

Claims

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Application Information

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IPC IPC(8): G01K13/12
Inventor 董兵
Owner 济南沃德汽车零部件有限公司
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