الإنجليزية - الإنجليزية
تعريف crucibles في الإنجليزية الإنجليزية القاموس.
- plural of crucible
- crucible
- A very difficult and trying experience, that acts as a refining or hardening process
- crucible
- A heat-resistant container in which metals are melted, usually at temperatures above 500°C, commonly made of graphite with clay as a binder
- crucible
- The bottom and hottest part of a blast furnace; the hearth
- crucible
- A cup-shaped piece of laboratory equipment used to contain chemical compounds when heating them to very high temperatures
- crucible
- a trying and purifying test or agency
- crucible
- {n} a chymist's pot to melt metals in
- crucible
- the bowl-like bottom of a blast furnace The crucible held molten slag and iron
- crucible
- A hollow place at the bottom of a furnace, to receive the melted metal
- crucible
- A heatproof vessel in which metal is made molten for pouring into a mould
- crucible
- Crucible is used to refer to a situation in which something is tested or a conflict takes place, often one which produces something new. a system in which ideas are tested in the crucible of party contention. a play by Arthur Miller which describes how innocent women were charged with being witches and cruelly punished by a court of law in Salem, Massachusetts in 1692. This play was written in 1953 to show how similar the Salem Witch Trials were to McCarthyism. a container in which substances are heated to very high temperatures (crucibulum, from croiseul). Pot of clay or other refractory material, used from ancient times as a container for melting metals or other materials. Modern crucibles may be small laboratory utensils for conducting high-temperature chemical reactions and analyses, or large industrial vessels for melting and calcining metal, ore, or glass, and may be made of clay, graphite, porcelain, or a relatively infusible metal
- crucible
- A high temperature, pot-shaped container used to melt glass in furnaces or kilns
- crucible
- Refractory vessel or pot, varying in size, for melting metal
- crucible
- A vessel or melting pot of clay or graphite used for melting and calcining substances requiring a high degree of heat, such as metals, ores, etc
- crucible
- A test of the most decisive kind; a severe trial; as, the crucible of affliction
- crucible
- {i} pot for heating a substance (generally metal) at very high temperatures; difficult test or trial
- crucible
- A crucible is a pot in which metals or other substances can be melted or heated up to very high temperatures
- crucible
- A vessel used for melting metals and made from or having a refactory lining
- crucible
- A vessel or melting pot, composed of some very refractory substance, as clay, graphite, platinum, and used for melting and calcining substances which require a strong degree of heat, as metals, ores, etc
- crucible
- A fire-clay pot in which a batch of glass ingredients are fused Our available crucibles are fused silica with a maximum operating temperature of 2900o F and excellent thermal shock resistance (take a look)
- crucible
- a vessel made of material that does not melt easily; used for high temperature chemical reactions
- crucible
- A ceramic or graphite container in which metal is melted Cuttlebone The chalky internal shell of a cuttlefish Cuttlebone is used as a mold material for metal castings The resulting casting has a wavy, striated surface Powdered cuttlebone is used as a polishing compound
- crucible
- Glass is melted in crucibles, or melting pots, in the ovens The crucibles are made by hand of Chamotte clay and must dry out 12 months before they can be used Before a crucible can be placed in a glass oven, it must be warmed slowly to 1100 degrees Celsius (2012 degrees Fahrenheit) which takes about one week The crucible weighs approximately 500 kilograms (1100 pounds) and can hold up to 750 kilograms (1650 pounds) of molten glass Under use during the day, the crucible reaches a temperature of approximately 1200 degrees Celsius (2192 degrees Fahrenheit) The rest of the time the temperature is increased to 1420 degrees Celsius (2588 degrees Fahrenheit) to melt the raw materials into a workable mixture for the next day The crucible can be used only 3-4 months after which it is discarded and replaced with a new one