Bessemer process
Air-blown steel production
The Bessemer process is a method of steelmaking developed in the 1850s that revolutionized metal production.
By blowing air through molten pig iron, impurities burn off and carbon content drops, converting iron to steel in minutes rather than days.
The process made steel cheap enough for railroads, bridges, and buildings, enabling the industrial age.
Largely replaced by newer methods by the mid-20th century.
Unrefined smelted metal
- converterDevice that transforms input
- blast furnaceOre-to-metal converter
- molten metalHeated liquefied alloy
- oxidationLosing electrons chemically
impurities · slag · manganese · tapping · ingot · crucible · decarburization · phosphorus
Large-scale standardized fabrication
- industrial revolutionRapid economic mechanization period
- scalabilityCapacity for growth
- throughputProcessing rate over time
- labor-savingMinimizing physical effort needed
mechanization · steel mills · railways · construction · shipbuilding · bridges · skyscrapers · Carnegie
Specific calendar year
- patentObvious; inventor's monopoly
- licensingGranting official permission
- SheffieldSouth Yorkshire manufacturing city
- commercial successProfitable market performance
Sudden important advance
- pioneeringFirst to explore territory
- transformationThorough change in form
- modernizationAdoption of current methods
- game-changerSomething transforming everything
pig iron
Unrefined smelted metal
- converterDevice that transforms input
- blast furnaceOre-to-metal converter
- molten metalHeated liquefied alloy
oxidation · impurities · slag · manganese · tapping · ingot · crucible · decarburization · phosphorus · sulfur
mass production
Large-scale standardized fabrication
- industrial revolutionRapid economic mechanization period
- scalabilityCapacity for growth
- throughputProcessing rate over time
labor-saving · mechanization · steel mills · railways · construction · shipbuilding · bridges · skyscrapers · Carnegie · Pittsburgh
1856
Specific calendar year
breakthrough
Sudden important advance
- pioneeringFirst to explore territory
- transformationThorough change in form
- modernizationAdoption of current methods
game-changer · advancement · disruption · obsolescence · quality control
- Innovationselectricity, steam engine, printing press, telephone, telegraph
- British Inventionssteam engine, jet engine, spinning jenny, power loom, telephone
- Steel Industrysteel mills, steel workers, blast furnaces, US Steel, U.S. Steel
- steelmakingblast furnace, molten steel, steel production, basic oxygen furnace, steel mills
- Materials HistoryBronze Age, Iron Age, Stone Age, Copper Age, iron smelting
- metallurgysmelting, refining, ferrite, base metal, alloys