A Study on Titanium Alloys Deep-Hole Drilling Technique

Zhu, Lin; Wang, Jiang Ping

doi:10.4028/0-87849-421-9.945

Cited by 5 publications

(15 citation statements)

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“…A larger helix angle would reduce both thrust force and torque . Rake angle was found to have little impact on the cutting force (Zhu and Wang, 2006). The exact effects of other geometric parameters are not available in the literature.…”

Section: Effects Of Drill Geometry and Materialsmentioning

confidence: 92%

“…The important geometric parameters for a typical twist drill are: rake angle, helix angle, side cutting edge, point angle, lip relief angle, and chisel edge angle (Barish, 1988;Dornfeld et al, 1999;Rao et al, 1990;Zhu and Wang, 2006). Twist drills are made in a wide variety of types with different materials, shapes, dimensions, and tolerances.…”

Section: Description and Features Of Twist Drillingmentioning

confidence: 99%

“…When the side cutting edge angle increased, the cutting force and torque would increase (Zhu and Wang, 2006). A larger helix angle would reduce both thrust force and torque .…”

Section: Effects Of Drill Geometry and Materialsmentioning

confidence: 99%

“…Barish (1988) provided a list of optimal drill geometry (such as drill point angle, chisel angle, lip relief angle, splitting angle, and the angle of notch) for drilling Ti. Zhu and Wang (2006) listed the order of these factors affecting tool wear (from greater to smaller) as: relief angle, rake angle, eccentricity of drill point, and side cutting edge angle. Zhu and Wang (2006) reported that a drill material with higher hardness and higher density was more wear-resistant.…”

Section: Effects Of Drill Geometry and Materialsmentioning

confidence: 99%

“…Zhu and Wang (2006) listed the order of these factors affecting tool wear (from greater to smaller) as: relief angle, rake angle, eccentricity of drill point, and side cutting edge angle. Zhu and Wang (2006) reported that a drill material with higher hardness and higher density was more wear-resistant. For example, carbide tools might be required instead of HSS tools to improve the tool life when the hardness level of Ti was above 38 Rockwell (Trucks, 1987).…”

Section: Effects Of Drill Geometry and Materialsmentioning

confidence: 99%

See 4 more Smart Citations

Mechanical Drilling Processes for Titanium Alloys: A Literature Review

Zhang

Churi

Pei

et al. 2008

Machining Science and Technology

119

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Titanium and its alloys (Ti) are attractive for many applications due to their superior properties.However, they are regarded as hard-to-machine materials. Drilling is an important machining process since it is involved in nearly all Ti applications. It is desirable to develop cost-effective drilling processes for Ti and/or improve the cost-effectiveness of currently-available processes. Such development and improvement will be benefited by a comprehensive literature review of drilling processes for Ti. This paper presents a literature review on mechanical drilling processes for Ti, namely, twist drilling, vibration assisted twist drilling, ultrasonic machining, and rotary ultrasonic machining. It discusses cutting force, cutting temperature, tool wear and tool life, hole quality (diameter and cylindricity, surface roughness, and burr), and chip type when drilling of Ti using these processes.

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Section: Effects Of Drill Geometry and Materialsmentioning

confidence: 92%

Section: Description and Features Of Twist Drillingmentioning

confidence: 99%

“…When the side cutting edge angle increased, the cutting force and torque would increase (Zhu and Wang, 2006). A larger helix angle would reduce both thrust force and torque .…”

Section: Effects Of Drill Geometry and Materialsmentioning

confidence: 99%

Section: Effects Of Drill Geometry and Materialsmentioning

confidence: 99%

Section: Effects Of Drill Geometry and Materialsmentioning

confidence: 99%

See 3 more Smart Citations

Mechanical Drilling Processes for Titanium Alloys: A Literature Review

Zhang

Churi

Pei

et al. 2008

Machining Science and Technology

119

View full text Add to dashboard Cite

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Experimental investigation and analysis of drilling parameters of metal matrix (Ti/TiB) composites

Ramkumar¹,

Selvakumar²,

Mohanraj

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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The present study focuses on the drilling processes and its parameters of titanium-titanium boride composites which are optimized using Taguchi technique. The titanium-titanium boride composites aiming 20% and 40% of titanium boride (by volume) is processed through three different powder metallurgical techniques such as, spark plasma sintering, hot isostatic pressing and vacuum sintering, respectively. It is processed through the drilled holes in the composites of 1 mm thickness using a solid carbide drill of 2 mm diameter. The effects of process parameters such as, feed rate, spindle speed and processing techniques on the drilling thrust force and surface roughness are analyzed. The results reveal that the feed rate and processing techniques are the most significant parameters influencing the thrust force and surface roughness. High thrust force and surface roughness are observed for the composites with 40% of titanium boride (by volume) processed through the spark plasma sintering technique. Further, the wear mode of drill edges, workpiece damage and chip morphology are also examined.

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