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Glossary of MinSE


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A diagram depicting the operational cutting speed and feed rate ranges of a specific tool material used for turn-cutting a specific workpiece material.   The diagram indicates operational stability ranges for various types of chip morphology, e.g., built-up-edge and continuous chip forms together with the dominant tool wear mechanisms.   Such diagrams were originally conceived by Trent (circa 1965) and were originally worked out for cemented carbide type cutting tool materials.       Such charts provide a practical guide-line for the optimal operating ranges of various tools.  the diagram depicted below is for a steel cutting grade cemented carbide used on suatenitic stainless steel.   The optimal range resides between the shaded zones.  At low speed where built-up-edge forms, carbide tools fail rapidly through a process of attrition.  At higher speeds, failure is caused through plastic deformation of the cutting edge.    Similar regimes exist for other workpiece materials, but the precise cutting speeds and feed rates differ significantly; this is due to widely differing variations in tool temperatures and stresses when cutting dissimilar materials.

Hungary flag Megmunkálási diagram

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A high rate sputter deposition (plasma assisted PVD) method.   A tunnel shaped magnetic field is created in front of the target face;  this serves to trap the available electrons in tightly defined orbits.    The number of electron-atom and electron-molecule collisions in front of the target face is increased resulting in the creation of a high ion concentration.   Hence, for a given pressure, more ions are available for sputtering through ionic bombardment than for a non-magnetron cathode;  there is a marked increase in sputter yield and deposition rate.   The following table shows that an order of magnitude increase in deposition rate is possible with magnetron enhancement.

Hungary flag Megnetronos bevonatolás

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The four states of matter used to transfer mass, i.e., solids, liquids, gases and plasmas.  In surface engineering these usually refer to pack, salt-bath, gaseous and plasma assisted methods.

Hungary flag Halmazállapot változtató közeg

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Any process that renders surface cleaning by mechanical action.

Hungary flag Mechanikai tisztítás

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A method of coating whereby a combination of mechanical and chemical action is used to produce a coating from powdered metal.   The process is carried out in a ball mill.  Also called peen plating.

Hungary flag Mechanikai bevonás

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Polishing performed by pressing a surface against a revolving soft wheel impreganted with fine (<10 µm) abrasive particles such as daiamond or Al2O3.

Hungary flag Mechanikai polírozás

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A general term embracing the treatments aimed at modifying the properties of the surface of an object using static or dynamic mechanical action.  The main types of mechanical surface engineering are: shot peening, mechanical plating, surface rolling, hammering and friction surfacing.

Hungary flag Mechanikai felülettechnológia

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A paint containing metal powder.  For example, aluminium powder is used to impart moderate corrosion protection for ferrous surfaces while paints containing copper or gold particles are used for decorative purposes.

Hungary flag Fémes festés

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See diffusion metallizing.    Also sometimes meaning those thermal spraying methods used for producing metallic coatings.

Hungary flag diffuziós fémbevonás, fémleválasztás

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The temperature at which austenite has completely decomposed to martensite.

Hungary flag Mf hőmérséklet


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