Search results

The size of HVOF particles is from 140 to 325mm and too small power will produce burning and flying upward so that it can affect the coating performance and the efficiency of coating. 3.1 The preparation technology of nano-particles There are three methods to prepare nano-particles.
And the other is mechanical grinding method.
The automatic control method is suitable for field operation in workshop and it is easy to noise elimination because the mechanical arm controlled by computer is used to spray.
However, automatic spraying system needs mechanical arms controlled by computers so that the equipment is complex and large.
In addition, the high price of nano-WC alloy powder is one of the main factor affect the application.

Main factors may influence the results of the waterproof system of an underground structure.
Properties of spray-on membrane.
At present, the technical properties and practical experience available are mainly from the tests on Masterseal 340F and 345.
The results from tests results and practical case histories show that the roughness of the first sprayed concrete layer has no direct influence on the mechanical properties of the sprayed waterproofing membrane, such as bond strength of the sprayed concrete.
In the case of relatively permeable linings, the main factors that affect loads on tunnel linings due to water flow are relative wall rocks-lining stiffness, relative wall rocks-lining permeability, and geometric factors [6].

Preparation and Physical Properties of PCL-Metoprolol Tartrate Electospun Nanofibers as Drug Delivery System Saja A.
The preparation processes, morphology, chemical structure thermal properties were evaluated.
Water/ oil emulsion electrospinning process basically have been affected by the properties of emulsions, include stability, viscosity and conductivity of emulsions[5].
Ramakrishna, emulsion electrospinning of polycaprolactone: influence of the surfactant type towards the scaffolds properties, J.
Jabur, Improving the mechanical properties of (chitosan /polyurethane) electrospun blend scaffold used for skin regeneration, AIP Conference Proceedings 2123, (2019) 020042.

In addition, the mechanical properties of the matrix were investigated, in order to deepen the understanding of the complex interaction between the sample preparation and the resulting mechanical properties of the composite material.
Introduction For the first wall of a fusion reactor unique challenges are present requiring advanced materials in areas ranging from mechanical strength to thermal properties.
Mechanical Properties of Wf/W.
Discussion Matrix Properties.
One of those parameters is the fiber volume fraction of the material which has a major influence on the resulting mechanical properties of the composite.

Over decades, lots of research works on classical torispherical and ellipsoidal heads have been carried out from the perspective of mechanical properties and forming.
Due to the disadvantage of the classical heads in mechanical properties and forming, this paper presents a novel parabola-arc-shaped head with the distinctive improvement on better mechanical properties, easily forming and less material cost.
Finite Element Modeling Material properties.
When the middle diameter and thickness are the same, the mechanical property of pressure vessel with ellipsoidal head is the best, with the novel parabola-arc-shaped head comes second and the torispherical head worst performed. 2.
According to the present analysis, the mechanical property of pressure vessel with the novel parabola-arc-shaped head is better than that with torispherical head.

Thus, the aim of the work was to study the influence degree of individual mineral additives and their complex on increasing the strength of hardened cement paste and identifying factors affecting this process.
In order to analyze the effect of mineral additives on the mechanical strength of hardened cement paste, their elastic properties must be taken into account.
Jafarov, The effect of finely ground mineral additives on the concrete properties, Building materials. 3 (2019) 73–76
Sausages, Properties of cements with carbonate additives, Cement. 10 (1981) 10-12
Arinina, Influence of water retaining additives on some properties of self-compacting concrete.

The soils are the precious property for the development of agriculture and forestry.
Terramechanics is a subject about the mechanic interaction between the terrain and the vehicle, in which the two sides are viewed as a system to research the mechanical properties of the ground and all kinds of relationship between the ground and the vehicle, so as to provide theoretical basis for the reasonable design of vehicle.
The properties of the terramechanics are one of the most important factors that affect the vehicle’s trafficability.
Such as Qizhou Fan established a mechanical model of P-K.
These conducted models and analysis methods will help to understand the mechanical properties of the soft soil and the interaction of the screw propeller and the ground.

Operation is easy to damage the digester wall, for large and medium-sized straw biogas refueling mechanical pressing of the R & D.
The role of research institutions, to attract users to actively participate in the farmers to mobilize all positive factors in the community to participate in this work, to speed up the process of using straw gas.
Straw unified gas engineering services Biogas plants for straw need professional centralized management, unified service, strengthen the straw gas service property management station construction, property management station to configure the transport machinery, mechanical access to materials, maintenance tools, and security detection equipment and other specialized equipment, training of professional staff and centralized gas users to conduct straw supply of raw materials, access to materials services, maintenance and safety checks, etc., so that straw biogas production process management standardization, to improve the effectiveness of straw gas use, quality and safety.
Local governments should address the development of local characteristics, to develop short-and long-term development plan, to avoid the excessive pursuit of short-term effects, resulting in unnecessary waste, affecting the gas industry's long-term development, to be targeted to increase investment, support and guide correctly, by administrative promotion, policy support, increase publicity and create an atmosphere to promote the comprehensive utilization of straw gas to carry out solid work.
Mechanical slurry residue discharge car security [J].Technology Innovation Review, 2011 (03): 49 [10] Lv Jianqiang, etc.

Introduction Porous ceramic materials offer a number of useful properties including low density, high-temperature stability, permeability, high surface area, and thermal shock resistance [1-3].
Many studies have been carried out about fabrication and property valuation of porous zirconia ceramics [7-10].
Zirconia powder content is the main factor affected on the density and the compressive strength.
Thermal and mechanical properties of porous Y-PSZ/zircon composites.
Microstructure and mechanical properties of porous yttria stabilized zirconia ceramic using poly methyl methacrylate powder.

Parameters Optimization on the Lapping Process of 9Cr18 with Taguchi Method Xiaofeng Zheng1,a, Julong Yuan1,b , Donghui Wen1,c and Feiyan Lou1,d 1 The MOE Key Laboratory of Mechanical Manufacture and Automation, Zhejiang University of Technology, Hangzhou, China, 310032 a shawfun@126.com; bjlyuan@zjut.edu.cn; cwdh_74@163.com; dloufeiyan2002@163.com Keywords: Optimum design, Taguchi method, 9Cr18, Lapping Abstract. 9Cr18 is a type of martensite stainless steel.
Finally, the optimum condition of each factor can be determined that speed: 80rpm, load:3.0kPa, and time distribution: rough lapping time=15min, Ultra-precision lapping time＝45min are the optimum conditions for both Ra and Wt.
In additional, since the lapping process was divided into two steps in the experiment, the time distribution of two steps affected result seriously.
The paper also involved in the vital factor.
Variance of each parameter is: Vk= SSk/Fk, Fk is freedom of parameters , freedom of this reseach is: Fk=3-1=2.The variance of unknown factor (D column inTable 3) is: Ve=SSe/Fe, Fe = 3-1 = 2.