Direct Electrochemical Preparation of Cobalt, Tungsten, and Tungsten Carbide from Cemented Carbide Scrap

2016 ◽  
Vol 48 (1) ◽  
pp. 692-700 ◽  
Author(s):  
Xiangjun Xiao ◽  
Xiaoli Xi ◽  
Zuoren Nie ◽  
Liwen Zhang ◽  
Liwen Ma
Keyword(s):  
Tungsten Carbide ◽  
Cemented Carbide ◽  
Electrochemical Preparation ◽  
And Tungsten

Fine Cemented Carbide Particles Prepared with Activated Tungsten Oxide

2012 ◽  
Vol 510 ◽  
pp. 619-622
Author(s):  
Xiao Ming Fu
Keyword(s):  
Particle Size ◽  
Electron Microscope ◽  
Tungsten Carbide ◽  
Tungsten Oxide ◽  
Experimental Results ◽  
Cemented Carbide ◽  
Carbide Particles ◽  
Better Than ◽  
And Tungsten

Fine cemented carbide in the diameter of less than 1 μm is obtained activated tungsten oxide. The samples are characterized by laser particle size analyze, electron microscope and sclerometer. The experimental results show that the size of tungsten particles and tungsten carbide prepared with activated tungsten becomes small remarkably, and coarse tungsten particles decrease. The properties of cemented carbide prepared with activated tungsten oxide are better than those of cemented carbide made with blue tungsten oxide. Especially, the hardness of cemented carbide prepared with activated tungsten oxide increases by about 7 %.

Increasing the Fracture Resistance of Cemented Carbides During the Drilling of Iron Ores

1978 ◽  
Vol 100 (1) ◽  
pp. 74-76 ◽  
Author(s):  
J. Peck
Keyword(s):  
Grain Size ◽  
Tungsten Carbide ◽  
Fracture Resistance ◽  
Iron Ore ◽  
Cobalt Content ◽  
Cemented Carbide ◽  
Iron Ores ◽  
Two Parameters ◽  
Carbide Insert ◽  
And Tungsten

Investigation shows that there is a preferred cobalt content for a given hardness of a cemented carbide insert when used in a bit which is drilling iron ore. Two parameters determine the hardness of a cemented carbide: cobalt percent and tungsten carbide grain size. By manipulating these two parameters, a number of cemented carbide materials can be made which have the same hardness. Three iron-ore drilling tests have been conducted where test bits contained materials having essentially the same hardness, but where the materials were varied through a range of cobalt content and tungsten carbide grain size. Graphs are presented which depict the effect on fracture resistance of varying the cobalt content-tungsten carbide grain size. In each test, one material showed superior fracture resistance. The test bits drilled iron ores such as hematite or taconite.

Detailed Assessments of Tribological Properties of Binder Jetting Printed Stainless Steel and Tungsten Carbide Infiltrated with Bronze

Wear ◽  
2021 ◽  
pp. 203788
Author(s):  
Shaogang Cui ◽  
Shenglu Lu ◽  
Kiet Tieu ◽  
Ganesh Kumar Meenashisundaram ◽  
Long Wang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Tungsten Carbide ◽  
Tribological Properties ◽  
Binder Jetting ◽  
And Tungsten

Interactions between hydrogen and tungsten carbide: a first principles study

RSC Advances ◽  
2014 ◽  
Vol 4 (75) ◽  
pp. 39912 ◽  
Author(s):  
Yongjie Xi ◽  
Liang Huang ◽  
Robert C. Forrey ◽  
Hansong Cheng
Keyword(s):  
Tungsten Carbide ◽  
First Principles ◽  
First Principles Study ◽  
And Tungsten

Simulation Analysis of Penetration Performance of Tungsten Alloy and Tungsten Carbide Rod Penetrator

2012 ◽  
Vol 182-183 ◽  
pp. 283-287
Author(s):  
Qun Biao Wu ◽  
Pei Hui Shen ◽  
Rong Zhong Liu
Keyword(s):  
Tungsten Carbide ◽  
Simulation Analysis ◽  
Tungsten Alloy ◽  
Distinct Advantage ◽  
Penetration Mechanics ◽  
Armor Steel ◽  
The One ◽  
The Impact ◽  
Better Than ◽  
And Tungsten

In penetration mechanics, the material parameters of the rod penetrator are very important factors which influence the effect of penetration. The effect of each parameter changes with the impact velocity. Simulation analysis of two models filled with tungsten alloy and tungsten carbide separately penetrating semi-infinite armor steel target at medium to high velocities has been made to quantitatively analyze the key roles that the density and hardness play. Simulation results indicate that a dividing line of velocity exists between the penetrations of two materials. Above the line, tungsten alloy rod with greater density has a distinct advantage with increasing velocity. Below the line, the advantage of tungsten carbide rod with greater hardness is significantly more with the decreasing velocity. In the process of penetration, penetration velocity decreases rapidly from a high value to zero. The simulation result provides quantitative analytic basis which can be used to prove that the penetrator composed of two different materials is better than the one composed of homogenous material.

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