Investigation of TiCrN-Coated High Speed Steel Tools Wear during Medium Density Fiberboard Milling

The characteristic of tools wear is analyzed through turning fluorophlogopite glass-ceramics. And the process of tools wear can be divided into three periods. Through single factor test, the influence of tools wear was discussed such as tool material, cooling conditions, cutting depth and feed speed. The study indicates, the tools material and cooling condition are major factors to affect tools wear. The high-speed steel tool is not suitable for turning fluorophlogopite. Because sustaining time of cutting is short and efficiency is low in machining, the tungsten-cobalt carbide tool is not perfect tool. And ceramics tool is better than the both. The tools wear rate can be decreased under cooling conditions. Influential curve of tools wear rate versus cutting depth is a part of parabola curve.

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Using Chatter Vibrations in Milling to Create Tribo-Functional Surfaces for Sheet-Bulk Metal Forming Tools

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.769.263 ◽

2013 ◽

Vol 769 ◽

pp. 263-270 ◽

Cited By ~ 2

Author(s):

Rouven Hense

Keyword(s):

Metal Forming ◽

High Speed ◽

High Speed Steel ◽

Milling Process ◽

Surface Structures ◽

Bulk Metal ◽

Chatter Vibrations ◽

Milling Tool ◽

Forming Tools ◽

Tools Wear

The studies presented in this paper show a concept for setting up a milling process with intentionally invoked chatter vibrations. The process is used for the generation of surface structures on forming tools. Wear of the milling tool is investigated as well as the tribological characteristics of the surfaces. The results lead to the conclusion that this method is suitable for machining challenging materials like high speed steel.

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Medium-density fibreboard milling using selected technological parameters

BioResources ◽

10.15376/biores.16.1.558-571 ◽

2020 ◽

Vol 16 (1) ◽

pp. 558-571

Author(s):

Grzegorz Pinkowski ◽

Waldemar Szymański ◽

Magdalena Piernik ◽

Andrzej Krauss

Keyword(s):

Cross Section ◽

High Speed ◽

High Speed Steel ◽

Cemented Carbides ◽

Medium Density ◽

Technological Parameters ◽

Medium Density Fibreboard ◽

Cutting Power ◽

Milled Surface ◽

Cutting Path

The aim of this study was to investigate the effect of blade type and sharpness angle on blade wear, cutting power, and surface roughness. The study was conducted on medium-density fibreboard (MDF) panels. Two blade types were analyzed (high-speed steel and cemented carbides) along with three variants of sharpness angles (40°, 45°, and 55°). Machining operations were performed on a spindle moulder at a feed rate of 6.3 m/min and rotational speed of 4500 min-1. The blade wear criterion was adopted as the loss of cutter surface area measured on the rake face. Roughness was determined using the Ra parameter, which was measured at three points on the cross-section of the MDF panel. A new, multifaceted approach to the study of cutting a narrow surface of the MDF board was used, thanks to which the interaction of such parameters as blade wear, cutting power, and machining quality as well as the type of material of the knives and their angular parameters were determined. An increase in blade wear and cutting power was recorded with an increase in cutting path, while roughness at the MDF panel cross-section varied. The cemented carbides cutter with the 45° angle may be proposed as optimal, because it showed a relatively low wear and cutting power while providing good quality of the milled surface.

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Effect of Powder-Mixed Dielectric on EDM Process Performance

Engineering and Technology Journal ◽

10.30684/etj.v38i8a.554 ◽

2020 ◽

Vol 38 (8A) ◽

pp. 1226-1235

Author(s):

Safa R. Fadhil ◽

Shukry. H. Aghdeab

Keyword(s):

Silicon Carbide ◽

High Speed ◽

Electrical Discharge Machining ◽

Removal Rate ◽

High Speed Steel ◽

Transformer Oil ◽

Dielectric Fluid ◽

Peak Current ◽

Powder Concentration ◽

Pulse On Time

Electrical Discharge Machining (EDM) is extensively used to manufacture different conductive materials, including difficult to machine materials with intricate profiles. Powder Mixed Electro-Discharge Machining (PMEDM) is a modern innovation in promoting the capabilities of conventional EDM. In this process, suitable materials in fine powder form are mixed in the dielectric fluid. An equal percentage of graphite and silicon carbide powders have been mixed together with the transformer oil and used as the dielectric media in this work. The aim of this study is to investigate the effect of some process parameters such as peak current, pulse-on time, and powder concentration of machining High-speed steel (HSS)/(M2) on the material removal rate (MRR), tool wear rate (TWR) and the surface roughness (Ra). Experiments have been designed and analyzed using Response Surface Methodology (RSM) approach by adopting a face-centered central composite design (FCCD). It is found that added graphite-silicon carbide mixing powder to the dielectric fluid enhanced the MRR and Ra as well as reduced the TWR at various conditions. Maximum MRR was (0.492 g/min) obtained at a peak current of (24 A), pulse on (100 µs), and powder concentration (10 g/l), minimum TWR was (0.00126 g/min) at (10 A, 100 µs, and 10 g/l), and better Ra was (3.51 µm) at (10 A, 50 µs, and 10 g/l).

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Enhancement of EDM Performance by Using Copper-Silver Composite Electrode

Engineering and Technology Journal ◽

10.30684/etj.v38i9a.1549 ◽

2020 ◽

Vol 38 (9A) ◽

pp. 1352-1358

Author(s):

Saad K. Shather ◽

Abbas A. Ibrahim ◽

Zainab H. Mohsein ◽

Omar H. Hassoon

Keyword(s):

Surface Roughness ◽

Material Removal Rate ◽

Material Removal ◽

High Speed ◽

Composite Electrode ◽

Removal Rate ◽

Pure Copper ◽

High Speed Steel ◽

Pulse On Time ◽

Pulse Off Time

Discharge Machining is a non-traditional machining technique and usually applied for hard metals and complex shapes that difficult to machining in the traditional cutting process. This process depends on different parameters that can affect the material removal rate and surface roughness. The electrode material is one of the important parameters in Electro –Discharge Machining (EDM). In this paper, the experimental work carried out by using a composite material electrode and the workpiece material from a high-speed steel plate. The cutting conditions: current (10 Amps, 12 Amps, 14 Amps), pulse on time (100 µs, 150 µs, 200 µs), pulse off time 25 µs, casting technique has been carried out to prepare the composite electrodes copper-sliver. The experimental results showed that Copper-Sliver (weight ratio70:30) gives better results than commonly electrode copper, Material Removal Rate (MRR) Copper-Sliver composite electrode reach to 0.225 gm/min higher than the pure Copper electrode. The lower value of the tool wear rate achieved with the composite electrode is 0.0001 gm/min. The surface roughness of the workpiece improved with a composite electrode compared with the pure electrode.

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MUSTANG-LC

Alloy Digest ◽

10.31399/asm.ad.ts0192 ◽

1967 ◽

Vol 16 (4) ◽

Keyword(s):

Physical Properties ◽

High Speed ◽

High Speed Steel ◽

Hot Extrusion ◽

Heat Treating ◽

Hot Forming ◽

Steel Company ◽

Extrusion Dies ◽

Die Life

Abstract Mustang-LC is a tungsten-molybdenum high-speed steel specially developed for hot work applications requiring long die life. It is recommended for hot forming and swaging dies, hot extrusion dies, hot punches, etc. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-192. Producer or source: Jessop Steel Company.

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UNS T12001

Alloy Digest ◽

10.31399/asm.ad.ts0495 ◽

1989 ◽

Vol 38 (1) ◽

Keyword(s):

Heat Treatment ◽

Physical Properties ◽

Tool Steel ◽

High Speed ◽

High Speed Steel ◽

Heat Treating ◽

General Purpose ◽

Steel Mills

Abstract UNS T12001 is a general-purpose, tungsten, high-speed steel containing nominally 18% tungsten, 4% chromium and 1% vanadium. It is suitable for practically all high-speed applications. This steel has been the standard of the industry for many years because of its cutting ability, ease of heat treatment and minimum tendency to decarburize. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-495. Producer or source: Tool steel mills.

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UNS T11310

Alloy Digest ◽

10.31399/asm.ad.ts0490 ◽

1988 ◽

Vol 37 (5) ◽

Keyword(s):

Physical Properties ◽

Tensile Properties ◽

Tool Steel ◽

High Speed ◽

Cutting Tools ◽

High Speed Steel ◽

Heat Treating ◽

General Purpose ◽

Steel Mills

Abstract UNS No. T11310 is the high vanadium type of molybdenum high-speed steel. It is a deep-hardening steel and offers high cutting ability and excellent finishing properties. It is a general-purpose steel for cutting tools and is used in such applications as taps, lathe tools and reamers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on heat treating and machining. Filing Code: TS-490. Producer or source: Tool steel mills.

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AISI TYPE M7

Alloy Digest ◽

10.31399/asm.ad.ts0483 ◽

1987 ◽

Vol 36 (10) ◽

Keyword(s):

Tool Steel ◽

High Speed ◽

High Speed Steel ◽

Heat Treating ◽

Significant Loss ◽

Steel Mills ◽

Aisi Type ◽

End Mills ◽

The Many ◽

Twist Drills

Abstract AISI Type M7 is a molybdenum type of high-speed steel. It is somewhat similar to AISI Type M1 tool steel but with higher percentages of carbon and vanadium to provide an improvement over AISI Type M1 in cutting characteristics without a significant loss in toughness. It is suitable for a wide variety of cutting-tool applications where improved resistance to abrasion is required. The many uses of Type M7 include twist drills, end mills, shear blades, punches, milling cutters, lathe tools, taps and reamers. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, and surface treatment. Filing Code: TS-483. Producer or source: Tool steel mills. See also Alloy Digest TS-468, January 1987.

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