scholarly journals Simulation and Experimental Research on the Cooling Medium of Diamond Single Particles and Beads Cutting Reinforced Concrete

2021 ◽  
Author(s):  
Lan Zhang ◽  
Yongyin Pang ◽  
Ming Liu ◽  
Liquan Wang ◽  
Xianbin Sha ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Operating Conditions ◽  
Cutting Process ◽  
Diamond Wire ◽  
Cooling Medium ◽  
Diamond Particles ◽  
First Choice ◽  
Diamond Wire Saw ◽  
Cooling Media ◽  
The Impact

Abstract Diamond wire saw is the first choice for the demolition of reinforced concrete walls and is expected to work from top to bottom for a couple of weeks. However, the service life of the machine is greatly affected by dry operating conditions. What’s more, the thick and high walls make the effective cooling of working diamond wire saws even harder. To tackle the cooling problem in the work, not only was the cutting heat generated during the cutting process calculated to provide a theoretical basis for the simulation and experiments, but the FEM software AdvantEdge was used to simulate the cutting process. By applying four different cooling media and comparing the temperature change of the cutting zone as well as the force of the diamond particles, the best cooling scheme was obtained. What’s more, the effectiveness of the cooling medium in the simulation process was experimentally verified. In the end, microscopic wear of the diamond particles was observed by Scanning Electron Microscope to study the impact of different cooling media. The proposed cooling scheme is of major significance for the dismantling of decommissioned nuclear facilities with diamond wire saws.

scholarly journals A Method For Cutting And Preparing Thin-Sections Of Frozen Soil

1977 ◽  
Vol 18 (78) ◽  
pp. 143-144 ◽  
Author(s):  
T.E. Osterkamp
Keyword(s):  
Cutting Forces ◽  
Frozen Soil ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Thin Sections ◽  
Diamond Wire ◽  
Wire Saw ◽  
Diamond Wire Saw ◽  
The Wire

Abstract A diamond wire saw was modified for cutting thin sections of frozen soil and suitable operating conditions were determined experimentally. It was found that a lubricated wire, 0.34 mm in diameter, operaied at cutting velocities of 100-300 mm s-1 and cutting forces 0.02-0.1 kg produced smooth cut surfaces un thin sections 0.4-0.5 mm in thickness. The; temperature and wire size were not critical operating parameters and the wire tensions recommended by the manufacturer were satisfactory. A method of mounting the thin sections is also described.

Recycling of silicon kerf loss derived from diamond-wire saw cutting process to prepare silicon nitride

2020 ◽  
Vol 247 ◽  
pp. 119163 ◽  
Author(s):  
Xing Jin ◽  
Jian Kong ◽  
Xuetong Zhou ◽  
Pengfei Xing ◽  
Yanxin Zhuang
Keyword(s):  
Silicon Nitride ◽  
Cutting Process ◽  
Diamond Wire ◽  
Wire Saw ◽  
Diamond Wire Saw

Research on the Counterweight in the Process of Diamond Wire Saw Cutting Polysilicon

2011 ◽  
Vol 418-420 ◽  
pp. 1048-1055
Author(s):  
Liao Yuan Zhang ◽  
Jian Guang Wang ◽  
Yong Yang ◽  
Chao Wang
Keyword(s):  
High Efficiency ◽  
Processing Efficiency ◽  
Diamond Wire ◽  
Cutting Machine ◽  
Wire Saw ◽  
Diamond Wire Saw ◽  
Hard And Brittle Materials ◽  
The Impact ◽  
The Mathematical Model ◽  
Trajectory Equation

In the process of cutting hard and brittle materials , electroplated diamond wire saw cutting has been growing concern for its high-quality, high efficiency, environmental protection and other advantages. In this paper, the wire saw cutting trajectory equation and the mathematical model of counterweight were established and the variation law of counterweight was analyzed. In addition, the impact of counterweight on the processing efficiency, surface quality was studied on the USDW-1 type ultrasound diamond wire saw cutting machine by way of cutting polysilicon material.

Recycling of kerf loss silicon derived from diamond-wire saw cutting process by chemical approach

2013 ◽  
Vol 120 ◽  
pp. 304-309 ◽  
Author(s):  
Kazuaki Tomono ◽  
Seiji Miyamoto ◽  
Takuro Ogawa ◽  
Hirotoshi Furuya ◽  
Yuki Okamura ◽  
...  
Keyword(s):  
Cutting Process ◽  
Diamond Wire ◽  
Chemical Approach ◽  
Wire Saw ◽  
Diamond Wire Saw

scholarly journals A Method For Cutting And Preparing Thin-Sections Of Frozen Soil

1977 ◽  
Vol 18 (78) ◽  
pp. 143-144 ◽  
Author(s):  
T.E. Osterkamp
Keyword(s):  
Cutting Forces ◽  
Frozen Soil ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Thin Sections ◽  
Diamond Wire ◽  
Wire Saw ◽  
Diamond Wire Saw ◽  
The Wire

AbstractA diamond wire saw was modified for cutting thin sections of frozen soil and suitable operating conditions were determined experimentally. It was found that a lubricated wire, 0.34 mm in diameter, operaied at cutting velocities of 100-300 mm s-1 and cutting forces 0.02-0.1 kg produced smooth cut surfaces un thin sections 0.4-0.5 mm in thickness. The; temperature and wire size were not critical operating parameters and the wire tensions recommended by the manufacturer were satisfactory. A method of mounting the thin sections is also described.

scholarly journals Application of Diamond Wire Saw Cutting in Demolition of Large Reinforced Concrete Members

2019 ◽  
Vol 136 ◽  
pp. 01001
Author(s):  
Jianhui YI ◽  
Tao Liu ◽  
Jie Zhou
Keyword(s):  
Reinforced Concrete ◽  
Rapid Development ◽  
Engineering Practice ◽  
Foundation Pit ◽  
Diamond Wire ◽  
Concrete Members ◽  
Urban Buildings ◽  
Wire Saw ◽  
Diamond Wire Saw ◽  
Construction Operation

With the rapid development of construction engineering and densely populated of urban buildings, it is impossible to adopt traditional methods for demolition construction due to the constraints of the surrounding environment. This paper combines the demolition engineering practice of the foundation pit support system of Jinyuan International Plaza, expounds the superiority of the application of diamond wire saw cutting in the demolition of large reinforced concrete members, and puts forward the effective construction operation points, which can provide beneficial for similar projects reference.

The Analysis on the Stability of Diamond Wire Saw Cutting Process for the Silicon

2009 ◽  
Vol 407-408 ◽  
pp. 684-689 ◽  
Author(s):  
Li Gang Zhao ◽  
Dun Wen Zuo ◽  
Yu Li Sun ◽  
Min Wang
Keyword(s):  
Removal Rate ◽  
Cutting Process ◽  
Cutting Mechanism ◽  
Diamond Wire ◽  
Wire Saw ◽  
Diamond Wire Saw ◽  
Material Removal Rate Model ◽  
Set Up ◽  
The Stability ◽  
Fixed Abrasive

. In this paper, the model of fixed abrasive diamond wire saw has been set up, and its cutting mechanism has been discussed. Then, the material removal rate model and wire saw cutting efficiency model have been established. the speed of wire saw, the number of the dynamic effective abrasive and the workpiece feed rate have been analyzed to study their impaction on the stability of cutting process. Finally, some rules and suggestions were brought forward.

scholarly journals The Cooling Media Influence on Selected Mechanical Properties of Steel

2020 ◽  
Vol 23 (4) ◽  
pp. 183-189
Author(s):  
Radim Šmak ◽  
Jiří Votava ◽  
Adam Polcar
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Cooling Capacity ◽  
Structural Transformations ◽  
Bending Test ◽  
Metallic Materials ◽  
Three Point Bending ◽  
Cooling Medium ◽  
Cooling Media ◽  
The Impact

AbstractThe aim of experiment was to analyse the structural transformations and changes in mechanical properties of K720 steel during heat treatment (quenching). Three types of cooling medium were selected. The heating parameters and subsequent delays at the recrystallisation temperature were the same for all samples and were observed in a laboratory furnace. Water with the highest cooling capacity was selected as the benchmark cooling medium. Subsequently, the hardening oil TK – 46 was used. Sunflower oil was selected as the last quenching medium, which can be considered an ecological replacement of quenching oil with possibility of biological disposal. The microstructure and microhardness of individual samples were subjected to a metallographic evaluation and evaluated according to ČSN EN ISO 6507, respectively. The impact toughness analysis was performed according to the ČSN EN ISO 148-1 and a three-point bending test was performed according to ČSN EN ISO 7438. This test specifies a method for determining the ability of metallic materials to undergo plastic deformation in bending. The bend test includes subjection of round, square, rectangular or polygonal cross-section to plastic deformation by bending, without changing the direction of loading, until the specified angle of bend is reached.

Effect of combined drink cans and steel fibers on the impact resistance and mechanical properties of concrete

2020 ◽  
Vol 14 (2) ◽  
pp. 6734-6742
Author(s):  
A. Syamsir ◽  
S. M. Mubin ◽  
N. M. Nor ◽  
V. Anggraini ◽  
S. Nagappan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Compressive Strength ◽  
Reinforced Concrete ◽  
Impact Resistance ◽  
Fiber Reinforced Concrete ◽  
Steel Fibers ◽  
Fiber Reinforced ◽  
Indirect Tensile ◽  
The Impact

This study investigated the combine effect of 0.2 % drink cans and steel fibers with volume fractions of 0%, 0.5%, 1%, 1.5%, 2%, 2.5% and 3% to the mechanical properties and impact resistance of concrete. Hooked-end steel fiber with 30 mm and 0.75 mm length and diameter, respectively was selected for this study.  The drinks cans fiber were twisted manually in order to increase friction between fiber and concrete. The results of the experiment showed that the combination of steel fibers and drink cans fibers improved the strength performance of concrete, especially the compressive strength, flexural strength and indirect tensile strength. The results of the experiment showed that the combination of steel fibers and drink cans fibers improved the compressive strength, flexural strength and indirect tensile strength by 2.3, 7, and 2 times as compare to batch 1, respectively. Moreover, the impact resistance of fiber reinforced concrete has increase by 7 times as compared to non-fiber concretes. Moreover, the impact resistance of fiber reinforced concrete consistently gave better results as compared to non-fiber concretes. The fiber reinforced concrete turned more ductile as the dosage of fibers was increased and ductility started to decrease slightly after optimum fiber dosage was reached. It was found that concrete with combination of 2% steel and 0.2% drink cans fibers showed the highest compressive, split tensile, flexural as well as impact strength.    

Truck Tire Operating Temperatures on Flat and Curved Test Surfaces

2005 ◽  
Vol 33 (3) ◽  
pp. 156-178 ◽  
Author(s):  
T. J. LaClair ◽  
C. Zarak
Keyword(s):  
Flat Surface ◽  
Operating Temperature ◽  
Operating Conditions ◽  
Load Pressure ◽  
Truck Tire ◽  
Endurance Testing ◽  
Operating Temperatures ◽  
The Impact ◽  
Tread Rubber ◽  
Cylindrical Test

Abstract Operating temperature is critical to the endurance life of a tire. Fundamental differences between operations of a tire on a flat surface, as experienced in normal highway use, and on a cylindrical test drum may result in a substantially higher tire temperature in the latter case. Nonetheless, cylindrical road wheels are widely used in the industry for tire endurance testing. This paper discusses the important effects of surface curvature on truck tire endurance testing and highlights the impact that curvature has on tire operating temperature. Temperature measurements made during testing on flat and curved surfaces under a range of load, pressure and speed conditions are presented. New tires and re-treaded tires of the same casing construction were evaluated to determine the effect that the tread rubber and pattern have on operating temperatures on the flat and curved test surfaces. The results of this study are used to suggest conditions on a road wheel that provide highway-equivalent operating conditions for truck tire endurance testing.

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