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Temperature controllable method and system for testing burning behavior of metal material

A technology of metal materials and testing methods, applied in the preparation of test samples, chemical analysis by combustion, etc., can solve problems such as uncontrollable temperature, affecting test accuracy, and failure to meet analysis and evaluation requirements, so as to facilitate operation and experiment The effect of high safety and high applicability

Inactive Publication Date: 2017-09-08
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Compared with the research work reported abroad and related literature and patents, the existing methods for testing the combustion behavior of metal materials still have certain limitations: 1. The resistance wire ignition method is used as the experimental ignition device, and its temperature is uncontrollable, which affects Test accuracy; 2. It can only test the combustion behavior of metal materials at room temperature in the system atmosphere, which cannot meet the analysis and evaluation requirements of actual working conditions; 3. It cannot simulate the combustion behavior in the environment of mixed gas, high oxygen partial pressure, and other highly oxidizing gases. Material Burning Behavior

Method used

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  • Temperature controllable method and system for testing burning behavior of metal material
  • Temperature controllable method and system for testing burning behavior of metal material
  • Temperature controllable method and system for testing burning behavior of metal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: Superalloy GH4202

[0039] (1) Make the sample: process the test material into a rod shape, size: diameter Φ3.5mm, length 50mm;

[0040] (2) Add igniter: Process the igniter Mg into a ring size: inner ring Φ3.5mm, outer ring Φ6mm, height 3.5mm; set at one end of the sample

[0041] (3) Install the sample: fix the end without the igniter on the equipment sample fixture, and then install the anti-splash device;

[0042] (4) Vacuuming: After loading the sample in step (2), seal the reaction device, extract the internal air, and the vacuum degree is -1MPa;

[0043] (5) Heating: Heat the entire reaction device to the experimental temperature of 700°C, keep it warm for a certain period of time, and pass the test of the temperature measuring device to ensure that the internal sample reaches the set experimental temperature of 700°C;

[0044] (6) Inflate gas: when the temperature in step (5) rises to the set temperature, open the inflatable device and the gas ci...

Embodiment 2

[0050] Example 2: Superalloy GH3030

[0051] (1) Make the sample: process the test material into a rod shape, size: diameter Φ7mm, length 100mm;

[0052] (2) Add igniter: Process the igniter Al into a ring-shaped size: inner ring Φ7mm, outer ring Φ12mm, height 5mm; set at one end of the sample;

[0053] (3) Install the sample: fix the end without the igniter on the equipment sample fixture, and then install the anti-splash device;

[0054] (4) Vacuuming: After loading the sample in step (2), seal the reaction device, extract the internal air, and the vacuum degree is -1MPa;

[0055] (5) Heating: Heat the entire reaction device to the experimental temperature of 600°C, keep it warm for a certain period of time, and pass the test of the temperature measuring device to ensure that the internal sample reaches the set experimental temperature of 600°C;

[0056] (6) Inflate gas: when the temperature in step (5) rises to the set temperature, open the inflatable device and the gas c...

Embodiment 3

[0062] Embodiment 3: Superalloy GH4169

[0063] (1) Make the sample: process the test material into a rod shape, size: diameter Φ5mm, length 150mm;

[0064] (2) Add igniter: Process the igniter Mg into a ring size: inner ring Φ5mm, outer ring Φ8mm, height 3.5mm; set at one end of the sample

[0065] (3) Install the sample: fix the end without the igniter on the equipment sample fixture, and then install the anti-splash device;

[0066] (4) Vacuuming: After loading the sample in step (2), seal the reaction device, extract the internal air, and the vacuum degree is -1MPa;

[0067] (5) Heating: Heat the entire reaction device to the experimental temperature of 500°C, keep it warm for a certain period of time, and pass the test of the temperature measuring device to ensure that the internal sample reaches the set experimental temperature of 500°C;

[0068] (6) Gas filling: when the temperature in step (5) rises to the set temperature, open the gas charging device and the gas cir...

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Abstract

The invention discloses a temperature controllable method and system for testing a burning behavior of a metal material. The method comprises the following steps: (1) making a sample; (2) adding an igniter; (3) mounting the sample and an anti-splashing device; (4) vacuumizing, so that the vacuum degree is 0MPa-1MPa; (5) heating, so that the temperature reaches 100-1,000 DEG C; (6) charging gas until the required temperature is 1MPa-80MPa; (7) adjusting the pressure; (8) igniting the igniter and the sample; (9) recording a whole burning process with a camera, recording the change of temperature of the burned sampled with a temperature measurement device and recording the change of internal pressure of the system with a pressure measurement device; (10) vacuumizing; (11) taking out the sample. The system comprises a sample clip, wherein the anti-flashing device is arranged at the periphery of the sample clip; an igniting device is arranged at the bottom of the sample clip; the sample clip is located in an environment of a heating device and a gas circulation device; the gas circulation device is connected with an external air charging device and a cooling device.

Description

technical field [0001] The invention belongs to the technical field of metal combustion, and in particular relates to a method and system for testing the combustion behavior of metal materials with controllable temperature. Background technique [0002] Under oxygen-rich, high oxygen partial pressure or other atmospheric conditions, most metal materials will undergo a combustion phenomenon that is different from oxidation and melting, but similar to wood, nylon and other materials, that is, metal oxygen-enriched combustion. Its characteristics are as follows: a sharp increase in temperature, a flame, and a dazzling glare accompanied by a violent release of heat. Metal materials used in aerospace, aviation, rapid-fire weapons, and automobiles all have the risk of burning. Once the material burns, it will have serious consequences. For example, there have been many rocket and space shuttle engine explosion accidents in the United States. After analysis, it was found that the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12G01N1/28
CPCG01N31/12G01N1/28
Inventor 黄进峰刘熙解国良张津王宏亮周启明喻嘉彬张济山吕昭平
Owner UNIV OF SCI & TECH BEIJING
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