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Истирания
| Глоссарий технических терминов |
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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.
Abrasive, английский
- Абразив; абразивный
- A material such as silicon carbide, aluminum oxide, silica, cerium oxide, emery or rouge that is used to figure, shape, or finish optical elements. abrasives differ from polishing materials mainly in particle size.
- A substance used in friction process, such as grinding or polishing.
- A hard substance for removing material by grinding, lapping, honing, and polishing. common abrasives include silicon carbide, boron carbide, diamond, emery, garnet, quartz, tripoli, pumice, diatomite, metal shot, grit, and various sands; usually adhered to paper or cloth.
- A hard substance having the ability to grind away the surface of a material against which it is rubbed, as the quartz fragments produced by the cutting action of a diamond bit in drilling a borehole in a siliceous rock abrade bit matrices and drill-string equipment.
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Коммутирования, русский
Истечения, русский
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