Method and device for controlling accurate ratio of various gas atmospheres of frictional wear testing machine

A friction and wear test, proportional control technology, applied in various fluid ratio control, test wear resistance and other directions, can solve the problem of affecting the proximity, affecting the accuracy of friction pairs, wrong judgment, etc., to achieve easy operation and good correlation , the effect of both control accuracy and efficiency

Inactive Publication Date: 2010-03-31
HENAN UNIV OF SCI & TECH
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Problems solved by technology

Accurate control of the atmosphere ratio, correct test operation method and temperature control accuracy will affect the closeness between the high-temperature friction and wear test environm

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  • Method and device for controlling accurate ratio of various gas atmospheres of frictional wear testing machine

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Embodiment Construction

[0010] The technical scheme of the present invention is further elaborated below in the mode of embodiment:

[0011] The multi-atmosphere accurate proportional control method described in this embodiment that can meet the high-temperature atmosphere friction and wear testing machine is as follows: before the test, take out the loading rod from the environmental air chamber of the main body of the testing machine, and close the test environmental air chamber. At this time, the environmental air chamber is In a fully enclosed state, the ambient air chamber can be evacuated. Use the electric furnace wire installed around the test environment gas chamber to raise the temperature of the ambient gas chamber, and at the same time turn on the circulating water cooling system, which is driven by a small motor of the water delivery pipe. After the ambient temperature reaches a balance with the set temperature, the atmosphere with a stable flow rate that has been accurately mixed in prop...

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Abstract

The invention discloses a method for controlling an accurate ratio of various gas atmospheres, which is used for a high-temperature gas atmosphere frictional wear testing machine, and a device thereof. The device consists of a plurality of gas input branches, a gas atmosphere mixing box, a test environmental gas chamber device, a temperature control device and a cooling system; the pressures of aplurality of gas sources are reduced to a given pressure by a pressure reducing valve; the flow ratio of all gas atmospheres is controlled by the mass flow controller; the mixed gas atmosphere is sentto the ambient temperature gas chamber needed in the test by a gas channel; and in a semi-closed environmental gas chamber, the sliding frictional wear test of a ball/disk or pin/disc in the high-temperature gas atmosphere environment is performed by relatively turning dual faces. The method realizes the accurate control of the ratio of various gas atmospheres and the ambient temperature and meets the gas supply requirements for the continuous frictional wear tests; and the device has a simple structure and can be safely and reliably operated, so that the aims of accurately controlling the ratio of various gas atmospheres and realizing low cost are achieved.

Description

technical field [0001] The invention belongs to the technical field of friction and wear testing machines, and mainly relates to a method and device for precise proportion control of multiple atmospheres used in high-temperature atmosphere friction and wear testing machines. Background technique [0002] Precise proportional control of multiple atmospheres is a key technology in the field of environmental testing. With the increasing application of multi-atmosphere mixing test environments, the requirements for the precise mixing of two or more atmospheres are getting higher and higher. The existing gas ratio mixing equipment has been used in the fields of food modified atmosphere fresh-keeping gas, metal smelting protective gas, gas shielded welding gas, gas flame cutting gas, gas phase reaction and medicine, and has created huge economic and social benefits for the society. . There are two main methods of gas proportional mixing: one is the flow method, which uses a flow...

Claims

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Application Information

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IPC IPC(8): G01N3/56G05D11/02
Inventor 邱明袁文征
Owner HENAN UNIV OF SCI & TECH
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