Fusible metal alloys

High temperatures may be obtained also with the aid of baths of fusible metal alloys, e.g. Woods metal - 4 parts of Bi, 2 parts of Pb, 1 part of Sn and 1 part of Cu - melts at 71 °C Rose s metal - 2 of Bi, 1 of Pb and 1 of Sn - has a melting point of 94 °C a eutectic mixture of lead and tin, composed of 37 parts of Pb and 63 parts of Sn, melts at 183 °C. Metal baths should not be used at temperatures much in excess of 350 °C owing to the rapid oxidation of the alloy. They have the advantage that they do not smoke or catch fire they are, however, solid at ordinary temperature and are usually too expensive for general use. It must be remembered that flasks or thermometers immersed in the molten metal must be removed before the metal is allowed to solidify. 

Alloys of tin are very important. Soft solder, type metal, fusible metal, pewter, bronze, bell metal. Babbitt metal. White metal, die casting alloy, and phosphor bronze are some of the... 

Soluble core molding The soluble core technology (SCT) is called by different names such as soluble fusible metal core technology (FMCT), fusible core, lost-core, and lost-wax techniques (3). In this process, a core [usually molded of a low melting alloy (eutectic mixture) but can also use water soluble TPs, wax formulations, etc.] is inserted into a mold such as an injection molding mold. This core can be of thin wall or solid construction. 

Alloys are mixtures of metals combined to obtain specific characteristics and enhanced properties for a particular application. The term fusible metals or fusible alloys denotes a group of alloys that have melting points below that of tin (232°C, 449°F). Most of these substances are mixtures of metals that by themselves have relatively low melting points, such as tin, bismuth (m.p. 275°C), indium (157°C),... 

To date, the single most important commercial use of lead is in the manufacture of lead-acid storage batteries. However, for most of the twentieth century, the most important environmental source of Pb was gasoline combnstion. It is also used in alloys, such as fusible metals, antifriction metals, and solder. Lead foil is made with lead alloys. Lead is used for covering cables and as a lining for laboratory sinks, tanks, and the chambers in the lead-chamber process for the manufacture of sulfuric acid. It is used extensively in plumbing. Because it has excellent vibration-dampening characteristics, lead is often used to support heavy machinery. 

The common metals gold, silver, lead, copper, tin, iron, being similar from so many points of view, were from an early period considered as minerals especially closely related. Their fusibility their cooling again to the same solid condition the fact that they could be melted together to form other kinds of metal (alloys) their malleability either in the cold or at furnace heat their adaptability to so many common uses, coins, statues, jewelry, tools, etc. easily gave rise to the idea that they possessed a constitution more alike than was the case with minerals... 

There is also another metal called Zincken.. . . This is not generally known it is in this sense a metal of a special kind, and from another seed. Yet many metals alloy with it. This metal is itself fusible for it is from three fusible elements (meaning doubtless, sulphur, mer-... 

To prepare it, first melt the lead in a crucible, then add the bismuth and finally the tin, and stir well together with a piece of tobacco pipe stem. This fusible metal 1 will melt in boiling water, and a teaspoon cast from the alloy will melt if... 

Fusible metal Any easily fusible metal or alloy. 

THn plates are thin sheets of Fe, coated with Sn. Tin foil consists of thin laminae of Sn, frequently alloyed with Pb. Copper and iron vessels are tinnml, after brightening, by contact with molten Sn. Pewter, bronze, bell metal, gun meUd, britannia metal, speculum metal, type metal, solder, and fusible metal contain So. 

Liqviation. Tho process of sweating out, by heat, the more fusible metals of an alloy. 

Occurs sometimes as metal, more frequently as sulphuret. It is a highly crystalline metal, of a reddish white colour, fusible at 476 , and even volatile in close vessels. When heated in the air it bums with a bluish flame, forming oxide of bismuth. Bismuth is an ingredient in Newton s fusible metal, and in various fusible alloys. 

Solid WI are used as triboengineering structural or lubricating materials. Plastics filled with solid lubricants are included in this class of materials since they lower the heat-induced strain in frictional joints through a reduction of the corrosion activity of the products of tribochemical reactions. Fusible metals and alloys of frictional parts may also ensure a protective effect... 

Magnetic fields can be effectively applied to retain insulating lubricating layers possessing magnetic properties within the friction zone. These include magnetic fluids and some fusible metals and alloys referred to as corrosion inhibitors. 

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