Babbitt, solder, tin
It is an alloy with high anti-friction properties. It consists of 2 main elements: tin, lead. It is used for pouring or spraying of moving parts to the body bearing shells. The melting point of this alloy is about 300−400 ° C. Most often occurring compositions consisting of 10% Cu + 90% tin or 89% tin and 4% copper and 7% antimony.
Tin babbitt — B88, B83, B83S, SAE11, SAE12, ASTM2 high viscosity significantly reduces friction. Tin babbitt — more durable, resistant to corrosion, it is better conduct heat when compared with lead alloys. But babbits lead — B16, BN, BSB, BKA, BK2, BK2SH, SAE13, SAE14, ASTM7, SAE15, ASTM15 have greater heat resistance. They are relevant bearing rolling mills or diesel engines.
The general lack of babbitt — low resistance to fatigue, a tendency to crumble under the stress or vibrations, which complicates the work of moving parts. Due to the low strength of babbitt bearings are filled only with a durable steel or cast iron body. The duration of operation of moving parts is inversely proportional to the thickness of the layer of babbit on steel bearing insert. The thinner the layer of babbitt, the longer the bearing
It is a low melting metal or alloy that is used in soldering (connection) between the components. It has a melting point lower than the mating metal. Soldering creates a mechanically strong hermetic seal. During soldering solder spreads over the metal and fills all the voids and gaps between connected parts. Buying solder, take into account the properties of the connected metal soldering expected strength, its cost. For soldering of conductive parts current pay attention to the specific conductivity of the solder.
Tin often used as an alternative safe and non-toxic coating which is resistant to corrosion in pure form or as alloys with other metals. The main applications of tin — tinned iron manufacturing and packaging of food products. Sometimes used as an additive in solder for electronics, repair of pipelines. The most common is an alloy of tin and copper — bronze. Tin and its alloys are used to make utensils, packaging foil, wire and more.
Tin is an important alloying component in the preparation of structural titanium alloys. Tin is also used in chemical power sources as an anode, for example, manganese-tin element oxide-mercury-tin element. Promising the use of tin in lead-tin battery.
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