Fine Particles of Rubber Cutting Machine Designed to Explore

2012 ◽  
Vol 472-475 ◽  
pp. 442-445 ◽  
Author(s):  
Li Jun Qiu ◽  
Jia Yang
Keyword(s):  
Particle Size ◽  
Fine Particles ◽  
Powder Particle Size ◽  
Work Efficiency ◽  
Powder Composition ◽  
Cutting Machine ◽  
Powder Particles ◽  
Tire Production ◽  
Mechanical Arrangement

Tire production of fine particles of powder composition and the mechanical arrangement of tool methods of efficiency of the larger craft. Fine particles of cutting edge cutting machine is a small gap between the edge of the particles produced can not exercise the role of the crowded file. File can not be cut and milled to achieve simultaneously. Multi-blade knife and bevel knife gap between the tool installation form. Between powder particles in the twice cut or ground to reduce the powder particle size cheddar and improve work efficiency results.

Particle Size Effects on Chemistry and Structure of Al-Cu-Fe Quasicrystalline Plasma Sprayed Coatings

1996 ◽  
Author(s):  
D. Sordelet ◽  
M. Besser
Keyword(s):  
Particle Size ◽  
Size Effects ◽  
Bulk Composition ◽  
Phase Assemblage ◽  
Powder Particle Size ◽  
Powder Composition ◽  
Powder Particles ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings

Abstract A brief study was performed to examine the influence of starting powder composition, starting powder particle size and spraying environment on the chemistry, phase assemblage and porosity of Al-Cu-Fe plasma sprayed coatings involving a quasicrystaliine phase. It was found that a loss of Al during spraying results from the extremely low thermal conductivity of the quasicrystaliine phase in the starting powders. This loss changes the bulk composition of the deposited coating and partially controls the phases that develop. Smaller starting powder particles tended to lose more Al and, therefore, form less of the quasicrystaliine phase. Larger starting powder particles did not lose Al to the same degree, and produced coatings with more of the quasicrystaliine phase. However, these powders produced coatings also had a higher amount of porosity.

The Role of Particle Size Distribution in the Performance and Modelling of Filtration

1993 ◽  
Vol 27 (10) ◽  
pp. 19-34 ◽  
Author(s):  
R. I. Mackie ◽  
R. Bai
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Fine Particles ◽  
Coarse Particles ◽  
Large Particles

The paper examines the importance of size distribution of the influent suspension on the performance of deep bed filters and its significance with regard to modelling. Experiments were carried out under a variety of conditions using suspensions which were identical in every respect apart from their size distribution. The results indicate that the presence of coarse particles does increase the removal of fine particles. Deposition of fine particles leads to a greater headloss than deposition of large particles. Changes in size distribution with time and depth play an important role in determining the behaviour of a filter, and models of both removal and headloss development must take account of this.

Influence of the Powder Particle Size on the Denudated Zone Width at Selective Laser Melting

2020 ◽  
Vol 989 ◽  
pp. 816-820
Author(s):  
Roman Sergeevich Khmyrov ◽  
R.R. Ableyeva ◽  
Tatiana Vasilievna Tarasova ◽  
A.V. Gusarov
Keyword(s):  
Particle Size ◽  
Selective Laser Melting ◽  
Powder Particle ◽  
Powder Particle Size ◽  
Adhesion Forces ◽  
Laser Melting ◽  
Friction Forces ◽  
Single Bead ◽  
Powder Particles

Mass transfer in the laser-interaction zone at selective laser melting influences the quality of the obtained material. Powder particles displacement during the formation of the single bead is experimentally studied. The so-called denudated zone was visualized by metallography. It was determined that increasing the powder particle size leads to widening the denudated zone. This can signify that the adhesion forces between powder particles prevail over the friction forces.

scholarly journals Role of powder particle size on laser powder bed fusion processability of AlSi10mg alloy

2020 ◽  
pp. 101630
Author(s):  
M.A. Balbaa ◽  
A. Ghasemi ◽  
E. Fereiduni ◽  
M.A. Elbestawi ◽  
S.D. Jadhav ◽  
...  
Keyword(s):  
Particle Size ◽  
Powder Particle ◽  
Powder Particle Size ◽  
Powder Bed Fusion ◽  
Laser Powder Bed Fusion ◽  
Powder Bed

Role of Powder Particle Size on the Encapsulation Efficiency of Oils during Spray Drying

2007 ◽  
Vol 25 (6) ◽  
pp. 1081-1089 ◽  
Author(s):  
Seid Mahdi Jafari ◽  
Yinghe He ◽  
Bhesh Bhandari
Keyword(s):  
Particle Size ◽  
Spray Drying ◽  
Powder Particle ◽  
Encapsulation Efficiency ◽  
Powder Particle Size

scholarly journals Identification of key aerosol populations through their size and composition resolved spectral scattering and absorption

2013 ◽  
Vol 13 (5) ◽  
pp. 2455-2470 ◽  
Author(s):  
F. Costabile ◽  
F. Barnaba ◽  
F. Angelini ◽  
G. P. Gobbi
Keyword(s):  
Particle Size ◽  
Optical Properties ◽  
Fine Particles ◽  
Single Scattering ◽  
Optical Measurements ◽  
Coarse Particles ◽  
Spectral Variability ◽  
General Validity ◽  
Aerosol Properties

Abstract. Characterizing chemical and physical aerosol properties is important to understand their sources, effects, and feedback mechanisms in the atmosphere. This study proposes a scheme to classify aerosol populations based on their spectral optical properties (absorption and scattering). The scheme is obtained thanks to the outstanding set of information on particle size and composition these properties contain. The spectral variability of the aerosol single scattering albedo (dSSA), and the extinction, scattering and absorption Angstrom exponents (EAE, SAE and AAE, respectively) were observed on the basis of two-year measurements of aerosol optical properties (scattering and absorption coefficients at blue, green and red wavelengths) performed in the suburbs of Rome (Italy). Optical measurements of various aerosol types were coupled to measurements of particle number size distributions and relevant optical properties simulations (Mie theory). These latter allowed the investigation of the role of the particle size and composition in the bulk aerosol properties observed. The combination of simulations and measurements suggested a general "paradigm" built on dSSA, SAE and AAE to optically classify aerosols. The paradigm proved suitable to identify the presence of key aerosol populations, including soot, biomass burning, organics, dust and marine particles. The work highlights that (i) aerosol populations show distinctive combinations of SAE and dSSA times AAE, these variables being linked by a linear inverse relation varying with varying SSA; (ii) fine particles show EAE > 1.5, whilst EAE < 2 is found for both coarse particles and ultrafine soot-rich aerosols; (iii) fine and coarse particles both show SSA > 0.8, whilst ultrafine urban Aitken mode and soot particles show SSA < 0.8. The proposed paradigm agrees with aerosol observations performed during past major field campaigns, this indicating that relations concerning the paradigm have a general validity.

Analysis of the Influence Factors on High Compressibility Water Atomized Iron Powder

2016 ◽  
Vol 859 ◽  
pp. 118-124
Author(s):  
Guo Ping Li ◽  
Li Bo Guo ◽  
Li Hui Sun ◽  
Feng Hua Luo ◽  
Jiao Du ◽  
...  
Keyword(s):  
Particle Size ◽  
Iron Powder ◽  
Oxygen Content ◽  
Fine Particles ◽  
Influence Factors ◽  
Impurity Content ◽  
Processing Parameters ◽  
Coarse Particles ◽  
Green Density ◽  
Powder Particles

In this paper, the influence factors on high compressibility water atomized iron powder LAP100.29 were studied such as the processing parameters, the proportion of coarse particles, powder oxygen content and impurity. The results showed that, by increasing the purity of molten steel and improving atomization temperature, the iron content of water atomized iron powder particles reached more than 99.67 %, the oxygen content was less than 0.08 %, acid insoluble was less than 0.08 %, green density reached 7.21~7.22 g/cm3. The contents of +80 and -80～+100 mesh powder were 1.6 % and 7.5 %, respectively. The compressibility could be improved by the increase of the coarse particles and the reduction of the fine particles (for example, lowering the content of -325 mesh particles). Generally speaking, the compressibility of the water atomized iron powder can be improved fundamentally by reducing oxygen content, impurity content and the reasonable distribution of particle size.

scholarly journals Dielectrophoretic Separation of Particles Using Microfluidic Chip with Composite Three-Dimensional Electrode

Micromachines ◽  
2020 ◽  
Vol 11 (7) ◽  
pp. 700
Author(s):  
Li Chen ◽  
Xing Liu ◽  
Xiaolin Zheng ◽  
Xiaoling Zhang ◽  
Jun Yang ◽  
...  
Keyword(s):  
Particle Size ◽  
Experimental Verification ◽  
Theoretical Calculations ◽  
Three Dimensional ◽  
Powder Particle Size ◽  
Microfluidic Chips ◽  
Pdms Chip ◽  
3D Electrode ◽  
Shape And Size

Integrating three-dimensional (3D) microelectrodes on microfluidic chips based on polydimethylsiloxane (PDMS) has been a challenge. This paper introduces a composite 3D electrode composed of Ag powder (particle size of 10 nm) and PDMS. Ethyl acetate is added as an auxiliary dispersant during the compounding process. A micromachining technique for processing 3D microelectrodes of any shape and size was developed to allow the electrodes to be firmly bonded to the PDMS chip. Through theoretical calculations, numerical simulations, and experimental verification, the role of the composite 3D microelectrodes in separating polystyrene particles of three different sizes via dielectrophoresis was systematically studied. This microfluidic device separated 20-, 10-, and 5-μm polystyrene particles nondestructively, efficiently, and accurately.

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