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Antique iron tools and other items at the La Lagunilla Market, Mexico City Iron was not worked in the Mesoamerican period, with its mining and working introduced by the Spanish. [ 31 ] Exploration of the metal was initially banned to protect the industry in Spain, but as tools made from the metal were essential for exploration and conquest, the ...
Wrought iron is a form of commercial iron containing less than 0.10% of carbon, less than 0.25% of impurities total of sulfur, phosphorus, silicon and manganese, and less than 2% slag by weight. [18] [19] Wrought iron is redshort or hot short if it contains sulfur in excess quantity. It has sufficient tenacity when cold, but cracks when bent or ...
In the era of commercial wrought iron, blooms were slag-riddled iron castings poured in a bloomery before being worked into wrought iron. In the era of commercial steel, blooms are intermediate-stage pieces of steel produced by a first pass of rolling (in a blooming mill) that works the ingots down to a smaller cross-sectional area, but still greater than 36 in 2 (230 cm 2). [1]
Metal is also worked in the city, especially tin and iron, which were introduced by the Spanish. Tin in worked in mostly decorative items such as mirror frames and figures. Iron is worked into knives, daggers and other blades, machetes, tableware. Tlacolula is particularly noted for its production of wrought iron railings for buildings. [1] [2]
Steel is an alloy composed of between 0.2 and 2.0 percent carbon, with the balance being iron. From prehistory through the creation of the blast furnace, iron was produced from iron ore as wrought iron, 99.82–100 percent Fe, and the process of making steel involved adding carbon to iron, usually in a serendipitous manner, in the forge, or via the cementation process.
The blister steel was put in a crucible with wrought iron and melted, producing crucible steel. Up to 3 tons of (then expensive) coke was burnt for each ton of steel produced. When rolled into bars such steel was sold at £50 to £60 (approximately £3,390 to £4,070 in 2008) [ 11 ] a long ton .
They orchestrated the sale of a non-existent plant to the Mexican government, valued at just a few million dollars. However, in 2019, the Superior Audit Office uncovered that the transaction had far exceeded its actual cost. Consequently, Ancira was arrested for fraud in Spain in 2019 and subsequently extradited to Mexico in 2021. [8] [9]
Hearth (left) and trip hammer (centre) in a finery forge. In the back room (right) is a large pile of charcoal. A finery forge is a forge used to produce wrought iron from pig iron by decarburization in a process called "fining" which involved liquifying cast iron in a fining hearth and removing carbon from the molten cast iron through oxidation. [1]
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