Study on the effectiveness of WS2 and CaF2 on the performances of self-lubricating micro impregnated diamond bits

2019 ◽  
Vol 84 ◽  
pp. 105021
Author(s):  
Chenglong Li ◽  
Longchen Duan ◽  
Songcheng Tan ◽  
Wenjiao Zhang ◽  
Bingsuo Pan ◽  
...  
Keyword(s):  
Impregnated Diamond Bits

The wear mechanisms of impregnated diamond bits

Wear ◽  
1994 ◽  
Vol 177 (1) ◽  
pp. 81-91 ◽  
Author(s):  
Tian Xuefeng ◽  
Tian Shifeng
Keyword(s):  
Wear Mechanisms ◽  
Impregnated Diamond Bits

Comments on the wear mechanisms of impregnated diamond bits

Wear ◽  
1997 ◽  
Vol 205 (1-2) ◽  
pp. 228-230 ◽  
Author(s):  
M.Es. Abdel Moneim ◽  
S. Abdou
Keyword(s):  
Wear Mechanisms ◽  
Impregnated Diamond Bits

Effects of bionic units in different scales on the wear behavior of bionic impregnated diamond bits

2016 ◽  
Vol 13 (4) ◽  
pp. 659-668 ◽  
Author(s):  
Zhaozhi Wang ◽  
Ke Gao ◽  
Youhong Sun ◽  
Zhihui Zhang ◽  
Shiyu Zhang ◽  
...  
Keyword(s):  
Wear Behavior ◽  
Impregnated Diamond Bits

Wear behavior of bionic impregnated diamond bits

2016 ◽  
Vol 94 ◽  
pp. 217-222 ◽  
Author(s):  
Zhaozhi Wang ◽  
Zhihui Zhang ◽  
Youhong Sun ◽  
Ke Gao ◽  
Yunhong Liang ◽  
...  
Keyword(s):  
Wear Behavior ◽  
Impregnated Diamond Bits

Development of a Rotary Drilling Mechanism for Impregnated Diamond Bits

2014 ◽  
Vol 989-994 ◽  
pp. 3136-3139
Author(s):  
Zhan Tao Li ◽  
Yong Zheng Ma ◽  
Ken-ichi Itakura
Keyword(s):  
Diamond Particle ◽  
State Theory ◽  
Mechanical Parameters ◽  
Rotary Drilling ◽  
Core Drilling ◽  
Geological Surveys ◽  
Proposed Model ◽  
Optimal Value ◽  
Operation Parameters ◽  
Impregnated Diamond Bits

Impregnated diamond core bits are often used in core drilling for geological surveys. A tri-state theory is proposed to describe the three states in drilling processes for a diamond particle or a bit. These states are contacting state, cutting state, and ploughing state. Furthermore, the relations among thrust and other mechanical parameters are also summarized. The optimal value of the specific energy is in the cutting state. Several experiment results verified the proposed model. This mechanism is useful for selecting operation parameters in core drilling using impregnated diamond core bits.

Wear Characteristics of Impregnated Diamond Bit in Drilling Armor Ceramic

2011 ◽  
Vol 179-180 ◽  
pp. 1150-1155
Author(s):  
Chao Gao ◽  
Jun Tang Yuan ◽  
Hao Jin ◽  
Zhong Quan Song
Keyword(s):  
Crystal Shape ◽  
Wear Characteristics ◽  
Comprehensive Properties ◽  
Impregnated Diamond Bit ◽  
Optimal Value ◽  
Abrasion Rate ◽  
Diamond Grain ◽  
Diamond Bit ◽  
Impregnated Diamond Bits ◽  
Diamond Abrasive

This paper describes the wear characteristics of impregnated diamond bits when drilling in Al2O3 armor ceramic. With different bits being developed, drilling experiments and scanning electron microscope (SEM) examinations were conducted, and the results show that diamond wear types consist of complete crystal shape, micro fragmentation, whole fragmentation, wearing flat and falling off of diamond; abrasive wear, impact abrasion and erosion exist in the wear of diamond and bond; diamond grain size and concentration have their optimal value under fixed machining conditions; diamonds of high quality could increase bit drilling efficiency and serving life; the bit whose abrasion rate of bond matches that of diamonds presents the best comprehensive properties.

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