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Hardness pencils
Глоссарий горнодобывающей промышленности |
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Hardness, английский
- Dureté
- A property of wood that enables it to resist indentation. it is measure in kn and is often determined by the janka hardness test.
- The resistance of a substance to surface abrasion.
- Твердость
- A property of wood that enables it to resist indentation.
- A diamond’s ability to resist scratches
- Generally measured using the mohs scale. resistance a material offers to scratching or abrasion.
- As used by individuals associated with the drilling and bit-setting industry, the relative ability of a mineral to scratch another mineral or to be penetrated by a knoop indenter; also, the relative ability of a metal to resist being penetrated by the indenter point of a vickers, brinnell, or eockwell hardness-testing apparatus.
- Твёрдость; жёсткость; стойкость ~ of water жёсткость воды
- 1. when used in reference to water, hardness is the total parts per million (ppm) of calcium an caco3 plus the magnesium expressed as equivalent caco3 [ppm hardness (as caco3) = (ppm ca x 2.497 + ppm mg x 4.116)]. 2. used in reference to pulp to denote the degree of delignification.
- Resistance of a material to indentation or scratching
- A measure of the ability of a material to withstand penetration by a hard pointed object. regarding thermal interface materials, this property is usually inversely proportional to the ability of a material to conform to uneven surfaces. hardness shore a (shore d, shore )
- Resistance of metal to plastic deformation, usually by indentation. however, the term may also refer to stiffness or temper or to resistance to scratching, abrasion, or cutting.
- In materials science, the resistance of a material to deformation, scratching, abrasion, or cutting. see also brinell hardness; rockwell hardness.
- Resistance of metal to denting, to plastic deformation by bending or to mechanical deformation by scratching, abrasion or cutting. typically measured by indentation.
Hardness, английский
Hardness conversion, английский
Перевод твердости (изменение числа твердости, определенного одним методом, на эквивалентное число твердости по другой шкале)
Hardness gage, английский
Hardness number (hb) — число твер-дости по бринеллю., русский
Hardness of water, английский
Hardness penetration curve, английский
Кривая прокаливаемости, кривая глубины закалки
Hardness plates, английский
Hardness points, английский
Hardness scale, английский
Quantitative units by means of which the relative hardness of minerals and metals can be determined, which for convenience is expressed in mohs, knoop, or scleroscope units for minerals and vickers, brinnell, or rockwell units for metals.
Hardness scale units, английский
Ohs knoop 1 (?) 2 32 3 135 4 163 5 395 6 560 7 710-790 8 1,250 9 1, 700-2, 200 >9 2,800 >9 3,200 >9 3,500 10 8, 000-8, 500
Hardness table, английский
Hardness test, английский
A determination of the relative hardness of a mineral, as made on a specimen, using appropriate hardness-testing apparatus and techniques. see hardness and hardness scale.
Hardness test — определения твердости по кнупу., русский
Hardness testing, английский
By means of instruments such as brinnel, rockwell, scleroscope, vickers, etc.
Hardness wheel, английский
Pencil, английский
- A group of light rays emanating from a point.
- Графитовый карандаш; инструмент "карандаш" (в графических программах)
- A pencil tool that simulates the look and feel of drawing lines with a pencil.
- A tool used to draw freehand paths.
Pencil, английский
Pencil beaver, английский
A person who gnaws on a pencil for reasons such as boredom, anxiety, or intense thinking. example look at that pencil beaver. the pencil is gonna be gone in a couple minutes.
Pencil break source, английский
Artificial source using the fracture of a brittle graphite or equivalent cylinder in a suitable fitting to simulate an acoustic emission signal. also called hsunielson source.
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Hardness plates, английский
Hardness gage, английский
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