On the Study of Cutting Efficiency and the Form of Cutting Edge of High Speed Steel Tools (the first report.)

Many studies have proved the service life of cutter can be prolonged by electrolytic strengthening. Based on the theory of electrolytic strengthening technology, this paper introduced and developed prototype equipment for strengthening cutting edge of rotary cutter and put forward a calculation method of total electric quantity consumption during the electrolysis suitable for microcontroller. The M8 high-speed steel tap is taken as a strengthening example. After finished the strengthening process that it clearly see the results of the surface of tap was obviously polished by observing the micrograph. This equipment improves the reliability of electrolytic strengthening and the cost is relatively cheap.

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A Mechanistic Force Model of the 5-Axis Milling Process

10.1115/imece2000-1906 ◽

2000 ◽

Author(s):

Paul A. Clayton ◽

Mohamed A. Elbestawi ◽

Tahany El-Wardany ◽

Dan Viens

Keyword(s):

High Speed ◽

Mechanistic Model ◽

Back Propagation ◽

High Speed Steel ◽

Cutting Edge ◽

Analytic Description ◽

Force Model ◽

Force Output ◽

Five Axis ◽

Milling Force Model

Abstract This paper presents a five-axis milling force model that can incorporate a variety of cutters and workpiece materials. The mechanistic model uses a discretized cutting edge to calculate an area of intersection which is multiplied by the specific cutting pressure to produce a force output along the primary cartesian coordinate system. By using an analytic description of the cutting edge with a non-specific cutter and workpiece intersection routine, a model was created that can describe a variety of cutting situations. Furthermore, a back propagation neural network is used to calibrate the model, providing robustness and scalability to the calibration process. Testing was performed on 1020 steel using various cutting parameters with a high speed steel two flute cutter and a tungsten carbide insert cutter. Furthermore, both linear cuts and a test die surface yielded good agreement between predicted and measured results.

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Optimization of Boring Process Parameters in Manufacturing of Polyacetal Bushing using High Speed Steel

E3S Web of Conferences ◽

10.1051/e3sconf/201913001031 ◽

2019 ◽

Vol 130 ◽

pp. 01031 ◽

Cited By ~ 1

Author(s):

The Jaya Suteja ◽

Yon Haryono ◽

Andri Harianto ◽

Esti Rinawiyanti

Keyword(s):

Surface Roughness ◽

Process Parameters ◽

Feed Rate ◽

High Speed ◽

Removal Rate ◽

High Speed Steel ◽

Cutting Edge ◽

Depth Of Cut ◽

Optimum Result ◽

Edge Angle

Polyacetal is commonly used as bushing material because of its low coefficient of friction and self lubricant characteristics. The polyacetal is machined by using boring process to produce bushing in certain surface roughness. The objectives of this research are to optimize three independent parameters (depth of cut, feed rate and principal cutting edge angle) of boring process of polyacetal using high speed steel tool to achieve the highest material removal rate and the required surface roughness. Response Surface Methodology is used to investigate the influence of the parameters and optimize the boring process. The research shows that the influence of the boring process parameters on polyacetal is similar compared to on metal. The result reveals that the optimum result is achieved by applying the value of depth of cut, feed rate, and principal cutting edge angle is 2.9 × 10–3 m, 0.229 mm rev–1, and 99.1° respectively. By applying these values, the maximum material rate removal achieved in this research is 1263.4 mm3 s–1 and the surface roughness achieved is 1.57 × 10–6 m.

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Development of Multilayer Composition Thin Film Thermocouple Cutting Temperature Sensor Based on Magnetron Sputtering

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.69-70.515 ◽

2009 ◽

Vol 69-70 ◽

pp. 515-519 ◽

Cited By ~ 1

Author(s):

Yun Xian Cui ◽

Bao Yuan Sun ◽

W.Y. Ding ◽

F.D. Sun

Keyword(s):

Thin Film ◽

Magnetron Sputtering ◽

High Speed ◽

Cutting Temperature ◽

High Speed Steel ◽

Plasma Source ◽

Cutting Edge ◽

Static Calibration ◽

Ecr Plasma ◽

Thin Film Thermocouple

In the paper, a new multilayer composition thin film thermocouple was developed, which can accurately measure the temperature nearby cutting edge in convenient and fast ways. By means of advanced Twinned microwave ECR plasma source enhanced Radio Frequency (RF) reaction non-balance magnetron sputtering technique, SiO2 insulating film, NiCr/NiSi sensor film and SiO2 protecting film were deposited on the surface HSS substrate. Both static calibration and dynamic calibration were completed. The results showed that the sensor had good performance, good linearity, quick dynamic response, response time constant was 12.7ms. The temperature near the cutting edge in cutting process of aluminum alloy was measured by the developed sensor. The bonding strength between multiple layer film and substrate of high-speed-steel met the presupposed demands.

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COMOKUT

Alloy Digest ◽

10.31399/asm.ad.ts0008 ◽

1953 ◽

Vol 2 (7) ◽

Keyword(s):

Fracture Toughness ◽

High Speed ◽

High Speed Steel ◽

Heat Treating ◽

Cutting Edge ◽

Bethlehem Steel Corporation ◽

Steel Corporation

Abstract COMOKUT is a tungsten-molybdenum-chromium-vanadium-cobalt type of high-speed steel. It is particularly suitable for continuous heavy hogging cuts where high cutting-edge temperatures and pressures are developed. This datasheet provides information on composition and hardness as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: TS-8. Producer or source: Bethlehem Steel Corporation.

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FAGERSTA M-7

Alloy Digest ◽

10.31399/asm.ad.ts0359 ◽

1980 ◽

Vol 29 (2) ◽

Keyword(s):

Physical Properties ◽

High Speed ◽

High Speed Steel ◽

Heat Treating ◽

Cutting Efficiency ◽

Aisi Type ◽

Thread Rolling ◽

End Mills ◽

The Many ◽

Twist Drills

Abstract FAGERSTA M-7 is a molybdenum-type high-speed steel similar to AISI Type M1, but with higher percentages of carbon and vanadium than M1. The higher levels of carbon and vanadium provide an improved cutting efficiency without significantly lowering toughness. The many applications of FAGERSTA M-7 include boring tools, end mills, lathe tools, twist drills, thread-rolling dies and wood-working tools. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-359. Producer or source: Fagersta Steels Inc..

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A Model for the Contact Conditions at the Chip-Tool Interface in Machining

Journal of Tribology ◽

10.1115/1.1537747 ◽

2003 ◽

Vol 125 (3) ◽

pp. 649-660 ◽

Cited By ~ 20

Author(s):

B. Ackroyd ◽

S. Chandrasekar ◽

W. D. Compton

Keyword(s):

High Speed ◽

High Speed Steel ◽

Optical Microscope ◽

Cutting Edge ◽

Stagnation Region ◽

Intimate Contact ◽

Contact Conditions ◽

Tool Materials ◽

Pure Metals ◽

Cutting Experiments

A high-speed photographic study has been made of the chip-tool interface and its evolution when cutting pure metals with optically transparent sapphire tools. The use of a high speed camera in conjunction with an optical microscope has enabled details of the interface, including the velocity field along the interface, to be resolved at high spatial and temporal resolution while cutting at speeds between 1 mm/sec and 2000 mm/sec. The results show the chip-tool contact along this interface to be composed of four distinct regions: a region of stagnation at the cutting edge, a region of retardation adjoining the stagnation region, a region of sliding beyond the retardation region, followed by a region of metal transfer or “sticking” that is located furthest away from the cutting edge alongside the boundary of the contact. The chip and tool appear to be in intimate contact over the stagnation, retardation, and sliding regions, with sliding occurring at the interface over much of this zone of intimate contact. These observations have provided direct experimental evidence for a model of the contact conditions proposed by Enahoro and Oxley based on analytical considerations. Cutting experiments with non-oxide tools such as aluminum and high speed steel suggest that this description conditions is equally applicable to tool materials other than sapphire.

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Influence of Cutting Edge Radius on the Wear Resistance of Powder Metallurgy High-Speed Steel Milling Inserts

Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture ◽

10.1243/195440505x32599 ◽

2006 ◽

Vol 220 (3) ◽

pp. 383-387 ◽

Cited By ~ 2

Author(s):

J Rech ◽

M-J Schaff

Keyword(s):

Electron Microscopy ◽

Scanning Electron Microscopy ◽

Powder Metallurgy ◽

High Speed ◽

High Speed Steel ◽

Cutting Edge ◽

Wear Behaviour ◽

Cutting Inserts ◽

Cutting Speeds ◽

Scanning Electron

The wear behaviour of powder metallurgy high-speed steel (PM-HSS) milling inserts is investigated experimentally. Cutting inserts with different cutting edge radii tested at various feed rates and cutting speeds were examined. The radii have been obtained either by microsandblasting or by honing. The initiation and progress of the tool wear was analysed with scanning electron microscopy (SEM) of the cutting edges. The experimental results exhibit quantitatively the effect of tool radius on the performance of milling inserts. A radius on the cutting edge prevents fast and unpredictable wear, and can lead to a great improvement of the tool life.

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VASCO M-7

Alloy Digest ◽

10.31399/asm.ad.ts0379 ◽

1981 ◽

Vol 30 (3) ◽

Keyword(s):

Physical Properties ◽

Surface Treatment ◽

High Speed ◽

High Speed Steel ◽

Heat Treating ◽

Cutting Efficiency ◽

Aisi Type ◽

End Mills

Abstract VASCO M-7 is a molybdenum type of high-speed steel having tungsten, chromium and molybdenum contents similar to AISI Type MI high-speed steel, but with higher carbon and vanadium. The increased percentages of carbon and vanadium add to the cutting efficiency of the steel without materially lessening the toughness. This steel has met with considerable favor among high-speed steel users who are seeking improved cutting properties for specific applications. Its many applications include drills, end mills, milling cutters, punches and shear blades. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-379. Producer or source: Teledyne Vasco.

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