sintered tungsten

 

буровое долото с зубьями из карбида вольфрама, впекаемыми в матрицу
—
[ http://slovarionline.ru/anglo_russkiy_slovar_neftegazovoy_promyishlennosti/]

Тематики

• нефтегазовая промышленность

EN

• sintered tungsten-carbide teeth drilling bit

* * *

Нефтепромысловый: буровое долото со вставными зубьями из карбидов вольфрама

< mat> (e.g. for tool tips) ■ Wolframcarbidhartmetall n

 

буровое долото с зубьями из карбида вольфрама, впекаемыми в матрицу
—
[ http://slovarionline.ru/anglo_russkiy_slovar_neftegazovoy_promyishlennosti/]

Тематики

• нефтегазовая промышленность

EN

• sintered tungsten-carbide teeth drilling bit

1. долото, головка бура, буровая коронка

2. сверло; перка; зенковка

3. кусочек; отрезок; частица

4. лезвие; режущая кромка

5. выч. двоичная единица информации, бит; знак в двоичной системе ()

6. см. bitumen, bituminous

— all-purpose bit

— auger bit

— balanced bit

— basket bit

— blank bit

— blunt bit

— bore bit

— boring bit

— box type bit

— button bit

— cable tool bit

— carbide type bit

— center bit

— center-hole bit

— chert bit

— clean-out bit

— collapsible bit

— concave bit

— cone rock bit

— core bit

— cross bit

— deflecting bit

— demountable bit

— diamond bit

— diamond point bit

— disk bit

— double taper bit

— drag bit

— dress bit

— drill bit

— drilling bit

— dull bit

— eccentric bit

— expansion bit

— face-discharge bit

— fish tail bit

— four point bit

— four roller bit

— four-way bit

— four-wing bit

— gumbo bit

— hard faced bit

— hard formation bit

— hollow bit

— Hughes bit

— hydraulic HP bit

— impact action bit

— insert bit

— jet bit

— junk bit

— long toothed bit

— off-balance bit

— opening bit

— paraffin bit

— pilot bit

— pilot reaming bit

— reamer bit

— reaming bit

— redrill bit

— Reed roller bit

— rock bit

— roller bit

— rotary bit

— side-tracking bit

— three-roller bit

— three-way bit

— three-winged bit

— tricone bit

— trigger bit

— tungsten insert bit

— twin-cone bit

— two roller bit

— two-cone bit

— two-way bit

— underreaming bit

— used bit

— windged scraping bit

— wire line bit

— Zublin bit

— Zublin differential bit

1. долото

2. головка бура; буровая коронка

3. бит

— abrasive jet bit

— air drilling bit

— all-purpose bit

— auger bit

— balanced bit

— balanced drilling bit

— ballaset coring bit

— balled-up drilling bit

— basket bit

— bi-center drilling bit

— blade bit

— blade-diamond drilling bit

— blade-drilling bit

— blade-type diamond bit

— blank bit

— blunt drilling bit

— bore bit

— boring bit

— box-type bit

— broaching bit

— bull bit

— button bit

— button roller bit

— cable drilling bit

— cable tool bit

— carbide insert bit

— carbide-type bit

— casing bit

— center bit

— center-hole bit

— chain bit

— chert drilling bit

— chisel bit

— chisel-crest insert bit

— chisel-drilling bit

— chisel-type bit

— chopping drilling bit

— clean-out bit

— collapsible drilling bit

— concave bit

— cone rock bit

— conical bit

— core bit

— core-drilling bit

— core-ejector drilling bit

— coreless drilling bit

— coring bit

— coring drilling bit

— cross bit

— cross chopping bit

— crown drilling bit

— cutting-type drilling bit

— deflecting bit

— demountable bit

— demountable drilling bit

— deviation control bit

— diamond bit

— diamond compact bit

— diamond crown bit

— diamond drilling bit

— diamond-impregnated bit

— diamond-insert drilling bit

— diamond-point bit

— diamond-point drilling bit

— disk bit

— double taper bit

— double-cone drilling bit

— drag bit

— drag-chisel drilling bit

— drag-drilling bit

— dress bit

— dress drilling bit

— drilling bit

— drop-center bit

— dull bit

— dull drilling bit

— eccentric drilling bit

— erosion drilling bit

— expandable drilling bit

— expansion bit

— expansion drilling bit

— extended gage bit

— face-discharge bit

— face-discharge diamond bit

— failure bit

— Ferrax journal bit

— fishtail drag bit

— fishtail drilling bit

— four-blade drilling bit

— four-blade rotation bit

— four-point bit

— four-roller bit

— four-way rotation bit

— four-wing bit

— four-wing rotation bit

— friction bearing bit

— full-gage bit

— full-gage deflecting bit

— full-gage drilling bit

— full-size drilling bit

— green drilling bit

— gumbo drilling bit

— hard-alloy crown bit

— hard-alloy drilling bit

— hard-faced drilling bit

— hard-formation bit

— hard-formation drilling bit

— high-pressure bit

— high-pressure diamond bit

— high-pressure drag bit

— high-pressure roller bit

— hollow bit

— Hughes bit

— impact action bit

— insert bit

— insert drilling bit

— jet bit

— jet circulation bit

— jet diamond bit

— jet drilling bit

— jet percussive bit

— jet roller bit

— journal-bearing bit

— journal-bearing insert bit

— junk bit

— lead drilling bit

— light set bit

— long-inserts bit

— long-toothed bit

— low-torque drilling bit

— medium formation bit

— medium inserts bit

— multiblade drilling bit

— noncore drilling bit

— off-balance bit

— off-balance drilling bit

— opening bit

— oversize drilling bit

— paraffin bit

— Pennsylvanian bit

— percussion drilling bit

— percussion-drag drilling bit

— pilot bit

— pilot drilling bit

— pilot reaming bit

— pineapple drilling bit

— placer bit

— plugged drilling bit

— pointed drilling bit

— precementing reamer bit

— reamer bit

— reaming bit

— redrill bit

— Reed roller bit

— replaceable cutterhead bit

— replaceable head bit

— rerun drilling bit

— retractable bit

— rock bit

— rock drilling bit

— roller bit

— roller-cone bit

— rolling-cutter drilling bit

— rotary bit

— rotary rock bit

— rotation bit

— round shoulder bit

— rugged bit

— sealed roller bit

— self-sharpening drilling bit

— shoe-type washover bit

— shot bit

— side tracking bit

— sintered diamond bit

— six-cone drilling bit

— six-cutter drilling bit

— six-roller drilling bit

— soft-formation bit

— soft-formation tricone bit

— spiral drilling bit

— spud bit

— spudding drilling bit

— square shoulder bit

— star cable bit

— step crown bit

— stepped crown bit

— step-shaped drilling bit

— stuck drilling bit

— surface-set bit

— tapered bit

— tapered-stepped profile bit

— T-gage bit

— thin-kerf bit

— three-blade drilling bit

— three-cone rock bit

— three-roller bit

— three-stage drilling bit

— three-way drilling bit

— three-winged bit

— toothed drilling bit

— tricone drilling bit

— trigger bit

— twin-cone bit

— twisted bit

— two-cone drilling bit

— two-prong rotary bit

— two-roller bit

— two-way bit

— undergage bit

— underreaming bit

— unfaced drilling bit

— unstabilized drilling bit

— used bit

— wheel-type drilling bit

— winged scraping bit

— wireline bit

— wireline core bit

— wireline drilling bit

— wornout drilling bit

— Zublin bit

— Zublin differential bit

.

1. бит ( двоичный разряд числа или двоичная единица информации)

2. буровое долото; головка бура

1) долото

2) головка бура; буровая коронка

3) долото бура; коронка для алмазного бурения

4) режущий инструмент; сверло

5) бит

•

- bit of drill head

* * *

SUBJECT AREA: Electricity, Metallurgy

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Coolidge obtained his BS from the Massachusetts Institute of Technology (MIT) in 1896, and his PhD (physics) from the University of Leipzig in 1899. He was appointed Assistant Professor of Physics at MIT in 1904, and in 1905 he joined the staff of the General Electric Company's research laboratory at Schenectady. In 1905 Schenectady was trying to make tungsten-filament lamps to counter the competition of the tantalum-filament lamps then being produced by their German rival Siemens. The first tungsten lamps made by Just and Hanaman in Vienna in 1904 had been too fragile for general use. Coolidge and his life-long collaborator, Colin G. Fink, succeeded in 1910 by hot-working directly dense sintered tungsten compacts into wire. This success was the result of a flash of insight by Coolidge, who first perceived that fully recrystallized tungsten wire was always brittle and that only partially work-hardened wire retained a measure of ductility. This grasped, a process was developed which induced ductility into the wire by hot-working at temperatures below those required for full recrystallization, so that an elongated fibrous grain structure was progressively developed. Sintered tungsten ingots were swaged to bar at temperatures around 1,500°C and at the end of the process ductile tungsten filament wire was drawn through diamond dies around 550°C. This process allowed General Electric to dominate the world lamp market. Tungsten lamps consumed only one-third the energy of carbon lamps, and for the first time the cost of electric lighting was reduced to that of gas. Between 1911 and 1914, manufacturing licences for the General Electric patents had been granted for most of the developed work. The validity of the General Electric monopoly was bitterly contested, though in all the litigation that followed, Coolidge's fibering principle was upheld. Commercial arrangements between General Electric and European producers such as Siemens led to the name "Osram" being commonly applied to any lamp with a drawn tungsten filament. In 1910 Coolidge patented the use of thoria as a particular additive that greatly improved the high-temperature strength of tungsten filaments. From this development sprang the technique of "dispersion strengthening", still being widely used in the development of high-temperature alloys in the 1990s. In 1913 Coolidge introduced the first controllable hot-cathode X-ray tube, which had a tungsten target and operated in vacuo rather than in a gaseous atmosphere. With this equipment, medical radiography could for the first time be safely practised on a routine basis. During the First World War, Coolidge developed portable X-ray units for use in field hospitals, and between the First and Second World Wars he introduced between 1 and 2 million X-ray machines for cancer treatment and for industrial radiography. He became Director of the Schenectady laboratory in 1932, and from 1940 until 1944 he was Vice-President and Director of Research. After retirement he was retained as an X-ray consultant, and in this capacity he attended the Bikini atom bomb trials in 1946. Throughout the Second World War he was a member of the National Defence Research Committee.

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