Smelting furnaces, including dome, induction, electric, hearth, and blast furnaces, are used to transform ores and other materials into iron and other non-ferrous metals. The cupola is the oldest furnace design, while the induction furnace is an advanced design that uses electricity. Electric furnaces use carbon and granite rods to create high temperatures, and hearth […]
A melting crucible is a pot-shaped container used to hold metal to be smelted in a furnace. They can be made from silicon carbide, graphite, or metals suitable for high temperatures. Crucibles can be cylindrical, conical, or plate-like. Foundries use them to cast small amounts of metal or specialty alloys. The material from which the […]
The electric smelting furnace uses electricity to melt materials into liquid form for use in creating alloys or pouring into molds. Small versions use a heating element, while large electric arc furnaces use electrodes to create heat and melt materials. Once melted, the liquid metal can be poured into molds to solidify. The electric smelting […]
The New Colossus poem by Emma Lazarus is engraved on a plaque at the base of the Statue of Liberty, welcoming immigrants to New York City. Over 37% of NYC residents are foreign-born, with the Dominican Republic and China being the top countries of origin. The largest concentration of immigrants is in Washington Heights, Manhattan, […]
Melting point is when a solid turns into a liquid due to heat. It is unique to pure substances and can be used to identify them. Water melts and freezes at 32°F (0°C), while other substances have extreme melting points. Some liquids can be supercooled, and some objects lack a melting point, like carbon dioxide […]
Selective laser melting is a rapid manufacturing process that uses a laser to melt metal particles and create 3D components. It relies on computer aided design and an inert environment, and can reduce waste and manufacturing costs. The equipment can be purchased, rented, or outsourced, and a variety of metals can be used. Selective laser […]
New materials and alloys are constantly being created, making it difficult to determine the material with the highest melting point. Currently, hafnium tantalum carbide has the highest melting point at 4488 K. Carbon has the highest melting point of chemical elements at 4300-4700 K, while tungsten has the second highest at 3695 K. Ceramics are […]
Multiculturalism and melting pot are different views on cultural diversity. Melting pot suggests blending into a dominant culture, while multiculturalism encourages separate cultural groups. The effects of a country’s chosen model depend on legislation. The US shifted from melting pot to multiculturalism in the 1980s due to tensions and questions about equality. Both multiculturalism and […]
