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Sun J.-H.,Heilongjiang Institute of Science and Technology | Qu Z.,Heilongjiang Institute of Science and Technology | Wei C.-R.,Heilongjiang Institute of Science and Technology | Wei C.-R.,Harbin Institute of Technology | And 2 more authors.
Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | Year: 2013

In this paper, by using self-designed 30 cm×30 cm square piping experimental study on gas explosion, the new and effective gas explosive device was explored, and the barrier burst material suitable for use in coal mines was studied. In the tests, density of 0.3 g/cm3 foam iron-nickel metal materials were placed in the pipe, and the flame temperature data and flame size were considered together as the judgment of the target material on the explosive wave energy control. The experiment results show that 0.3 g/cm3 bubble iron-nickel metal have the inhibitory effect of gas explosion flame wave and strong fire resistant capacity, and the maximum decay rate of gas explosion flame temperature in the pipe is between 7.1~70.7%. Studies have also found that the thickness, diameter and substrate material composition have certain influences on the inhibition effect of flame wave, and the porous foamed iron-nickel metal with high thickness, small aperture, and high nickel-containing compositions is favorable for the flame wave attenuation. Source


Wei C.-R.,Harbin Institute of Technology | Wei C.-R.,Heilongjiang Institute of Science and Technology | Xu M.-Q.,Heilongjiang Institute of Science and Technology | Sun J.-H.,Heilongjiang Institute of Science and Technology | And 2 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2012

Using self-design the section 30 cm×30 cm gas explosion experiment pipe, experimental research the different parameters of the metal wire mesh, foam ceramic materials and porous foam iron nickel metal suppression of blasting effect, combined with material characteristics, analysis the mechanism of inhibition explosion. The results showed that the metal wire mesh, foam ceramic and porous foam iron nickel metal on gas explosion spread all have certain inhibition, porous foam iron nickel metal failure pressure and the fireproof effect is better than metal wire mesh and foam ceramics, material damage degree is reduced and the attenuation flame of effect is improved; point four, porous foam iron nickel metal than 40 orders 40 layers metal wire mesh in the attenuation of the flame temperature increase of 43.8%, compared by Al 2O 3 7 cm big hole ceramics bubble up 34.5%. Point seven, porous foam iron nickel metal than 40 orders 40 layers metal wire mesh in the attenuation of the explosion overpressure increase of 29.9%, compared by SiC 5 cm big hole ceramics bubble up 22.4%. Source


Sun J.-H.,Heilongjiang Institute of Science and Technology | Li Y.-X.,Heilongjiang Institute of Science and Technology | Wei C.-R.,Heilongjiang Institute of Science and Technology | Wei C.-R.,Harbin Institute of Technology | And 2 more authors.
Gongneng Cailiao/Journal of Functional Materials | Year: 2013

To seek barrier device and develop explosion suppression material for coalmine gas explosion, effects of porous foam iron-nickel metal material's attenuation of gas explosion overpressure on the different parameters was studied experimentally by using self-designed square experimental pipeline which section is 30 cm×30 cm. The results show that the absorbing ability, strong capability of resisting impact, good effect on the attenuation of shock wave of gas explosion do the porous foam iron-nickel metal material have, attenuation rate is between 12.9% and 73.8%. Aperture, relative density and the thickness are important factors of attenuation performance. Properly reducing aperture and increasing relative density and thickness help to improve attenuation performance of porous foam iron-nickel metal material, well the proportion of material composition has little effect on it. Source


Wei C.-R.,Harbin Institute of Technology | Wei C.-R.,Harbin First Machinery Manufacturing Company | Xu M.-Q.,Harbin Institute of Technology | Wang S.-T.,Harbin First Machinery Manufacturing Company | And 2 more authors.
Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology | Year: 2013

To seek explosion suppression material for coalmine gas explosion, effects of porous materials' attenuation of gas explosion flame temperature on the different parameters was studied experimentally by using self-designed square experimental pipeline which section was 30 cm × 30 cm. The results show that the good attenuation of gas explosion flame temperature does wire mesh and ceramic foam and porous foam iron-nickel metal have. The wire mesh's maximum attenuation rate of gas explosion flame temperature is between 8.7% and 26.9%, the rate of ceramic foam is between 23.1% and 36.2%, the best of them is porous foam iron-nickel metal, the rate is between 7.1% and 65.7%. Thickness, aperture and relative density are important factors of attenuation performance. Properly reducing aperture and increasing relative density and thickness help to improve attenuation performance for the same material. Source

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