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A molybdomancy kit includes a set of shaped lead ingots, to be melted over a candle flame in a spoon. A piece of molten lead after immersion in cold water. Molybdomancy (from Ancient Greek: μόλυβδος, romanized: molybdos, lit. 'lead' [1] and -mancy) is a technique of divination using molten metal.
Gravity casting is among the oldest known processes for fabricating metals and metal alloys. [1] It involves the pouring of molten metal from a crucible into a mold under only the force of gravity, without the use of pressurized gases, vacuums, or centrifugal force.
In metallurgy, a ladle is a bucket-shaped container or vessel used to transport and pour out molten metals. [1] Ladles are often used in foundries and range in size from small hand-carried vessels that resemble a kitchen ladle and hold 20 kilograms (44 lb) to large steelmill ladles that hold up to 300 tonnes (295 long tons; 331 short tons).
Sand casting requires a lead time of days, or even weeks sometimes, for production at high output rates (1–20 pieces/hr-mold) and is unsurpassed for large-part production. Green (moist) sand, which is black in color, has almost no part weight limit, whereas dry sand has a practical part mass limit of 2,300–2,700 kg (5,100–6,000 lb).
Bronze poured from a crucible into a mold, using the lost-wax casting process. In a foundry, molten metal is poured into molds. Pouring can be accomplished with gravity, or it may be assisted with a vacuum or pressurized gas. Many modern foundries use robots or automatic pouring machines to pour molten metal.
The machine has a heated crucible for the hot type metal, with a mechanically actuated plunger which operates as part of the injection cycle. The pot on the machine was usually left on overnight during the week, with some flux added to the pot to reduce oxidation. At the end of each week, the plunger assembly had to be disassembled (while hot ...
A field trip for special education students to a Cracker Barrel in Maryland this week has resulted in outcry from teachers and parents.. On Tuesday, a group of 11 students and seven staff members ...
These crucibles have added handles to allow for better manipulation, however, due to the poor preservation of the crucibles there is no evidence of a pouring spout. The main purpose of the crucible during this period was to keep the ore in the area where the heat was concentrated to separate it from impurities before shaping. [6]
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