Tool wear characteristics in turning of titanium alloy Ti-6246

Jawaid, A.; Che-Haron, C.H.; Abdullah, Asma

doi:10.1016/s0924-0136(99)00246-0

Cited by 170 publications

(106 citation statements)

References 4 publications

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“…전통적인 소재의 강도와 경도를 상회하는 초경 합금, 세라믹, 복합재료 등의 발달로 인하여 신뢰성의 제품개발 이 가능하게 되었다 (1,2) . 강도와 경도가 높은 이러한 소재의 경 우 기존의 가공방법으로는 가공이 어렵다는 단점이 있다.…”

Section: 서 론unclassified

“…가공 이 어려운 소재에 전통적인 절삭가공용 공구를 이용하는 경우 가공 깊이가 깊어질수록 모재와 공구간의 마찰력이 커져서 공 구의 파손을 초래하게 된다. 가공깊이가 깊을수록 특수한 가공 법을 적용하지 않는 경우, 가공 자체가 불가능해 지는 일이 발생 한다 (1,3,4) . 깊은 구멍의 가공에 사용되고 있는 특수 가공법으로 는, 전기 화학적 방식의 전해가공(electro-chemical machining, LBM), 전자 빔 가공(electron beam machining, EBM) 등이 있다 (5) .…”

Section: 서 론unclassified

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Real-Time Prediction of Electrode Wear for the Small Hole Pass-Through by EDM-drill

Choi¹,

Huh²,

Kim³

et al. 2013

Journal of The Korean Society of Manufacturing Technology Engin

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Electric discharge machining drill (EDM-drill) is an efficient process for the fabrication of micro-diameter deep metal hole. As there is non-physical contact between tool (electrode) and workpiece, EDM-drill is widely used to machine the hard machining materials such as high strength steel, cemented carbide, titanium alloys. The electro-thermal energy forces the electrode to wear out together with the workpiece to be machined. The electrode wear occurs inside of a machining hole. and It causes hard to monitor the machining state, which leads the productivity and the quality to decrease. Thus, this study presents a methodology to estimated the electrode wear amount while two coefficients (scale factor and shape factor) of the logarithmic regression model are evaluated from the experiment result. To increase the accuracy of estimation model, the linear transformation method is adopted using the differences of initial electrode wear differences. The estimation model is verified through experiment. The experimental result shows that within minute error, the estimation model is able to predict accurately.

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Section: 서 론unclassified

Real-Time Prediction of Electrode Wear for the Small Hole Pass-Through by EDM-drill

Choi¹,

Huh²,

Kim³

et al. 2013

Journal of The Korean Society of Manufacturing Technology Engin

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“…Both the coated carbide tools by physical vapor deposition (PVD) or by chemical vapor deposition (CVD) are used in machining of nickel base alloys. Carbide tools with multilayer work better in terms of tool life than those with a single layer (Ezugwu and Okeke, 2000) and (Jawaid et. al.…”

Section: Advanced Materials Research Vol 278 313mentioning

confidence: 99%

Study of the Turning Nickel Base Alloy Pyromet<sup>®</sup> 31V (SAE HEV8)

Ribeiro

Bahia

2011

AMR

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Abstract. Considering the constant technological developments in the aeronautical, space, automotive, shipbuilding, nuclear and petrochemical fields, among others, the use of materials with high strength mechanical capabilities at high temperatures has been increasingly used. Among the materials that meet the mechanical strength and corrosion properties at temperatures around 815 °C one can find the nickel base alloy Pyromet® 31V (SAE HEV8). This alloy is commonly applied in the manufacturing of high power diesel engines exhaust valves where it is required high resistance to sulphide, corrosion and good resistance to creep. However, due to its high mechanical strength and low thermal conductivity its machinability is made difficult, creating major challenges in the analysis of the best combinations among machining parameters and cutting tools to be used. Its low thermal conductivity results in a concentration of heat at high temperatures in the interfaces of workpiece-tool and tool-chip, consequently accelerating the tools wearing and increasing production costs. This work aimed to study the machinability, using the carbide coated and uncoated tools, of the hot-rolled Pyromet® 31V alloy with hardness between 41.5 and 42.5 HRC. The nickel base alloy used consists essentially of the following components: 56.5% Ni, 22.5% Cr, 2,2% Ti, 0,04% C, 1,2% Al, 0.85% Nb and the rest of iron. Through the turning of this alloy we able to analyze the working mechanisms of wear on tools and evaluate the roughness provided on the cutting parameters used. The tests were performed on a CNC lathe machine using the coated carbide tool TNMG 160408-23 Class 1005 (ISO S15) and uncoated tools TNMG 160408-23 Class H13A (ISO S15). Cutting fluid was used so abundantly and cutting speeds were fixed in 75 and 90 m/min. to feed rates that ranged from 0.12, 0.15, 0.18 and 0.21 mm/rev. and cutting depth of 0.8mm. The results of the comparison between uncoated tools and coated ones presented a machined length of just 30% to the first in relation to the performance of the second. The coated tools has obtained its best result for both 75 and 90 m/min. with feed rate of 0.15 mm/rev. unlike the uncoated tool which obtained its better results to 0.12 mm/rev.

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“…Titanium plays a very important role in metal material, and it is even known as a "universal metal", and also regarded as the third metal following iron and aluminum [3,4]. Thus, titanium alloy was widely used [5,6], and a great many studies had been done since it was discovered. Of course, the titanium alloy [7,8] was further used in more fields with the in-depth study.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Brazing Technique on Microstructure of TC4 Alloy Joint

Ding¹,

Wang²

2017

2017 4th International Materials, Machinery and Civil Engineering Conference (MATMCE 2017)

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Abstract. The TC4 alloy was connected by brazing using the active brazing filler metal ((Ti 0.46 Cu 0.14 Zr 0.27 Ni 0.13 ) 99.5% Si 0.5% ) in this experiment, and the microstructures of brazing sample joint interfaces were analyzed. It was found by research that the joint microstructures from the outside to the center of welding were made up of TC4/mesh basket (α + β) Ti + trace CuTi 2 /darkgray island + light-gray island + white bar. The welding temperature and holding time had a great impact on the joint microstructure, and the great importance should be attached to the impact.

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Tool wear characteristics in turning of titanium alloy Ti-6246

Cited by 170 publications

References 4 publications

Real-Time Prediction of Electrode Wear for the Small Hole Pass-Through by EDM-drill

Real-Time Prediction of Electrode Wear for the Small Hole Pass-Through by EDM-drill

Study of the Turning Nickel Base Alloy Pyromet<sup>®</sup> 31V (SAE HEV8)

Effect of the Brazing Technique on Microstructure of TC4 Alloy Joint

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