Search results
Results From The WOW.Com Content Network
A Han-dynasty iron plowshare. Modern archaeologists have unearthed Han iron farming tools throughout China, from Inner Mongolia in the north to Yunnan in the south. [31] The spade, shovel, pick, and plow were used for tillage, the hoe for weeding, the rake for loosening the soil, and the sickle for harvesting crops. [31]
If iron ores are heated with carbon to 1420–1470 K, a molten liquid is formed, an alloy of about 96.5% iron and 3.5% carbon. This product is strong, can be cast into intricate shapes, but is too brittle to be worked, unless the product is decarburized to remove most of the carbon. The vast majority of Chinese iron manufacture, from the late ...
Cast iron: Confirmed by archaeological evidence, cast iron, made from melting pig iron, was developed in China by the early 5th century BC during the Zhou dynasty (1122–256 BC), the oldest specimens found in a tomb of Luhe County in Jiangsu province; despite this, most of the early blast furnaces and cupola furnaces discovered in China date ...
Before the Han dynasty (202 BC – AD 220), Chinese ploughs were made almost wholly of wood except for the iron blade of the ploughshare. These were V-shaped iron pieces mounted on wooden blades and handles. [22]: 18 By the Han period the entire ploughshare was made of cast iron. These are the earliest known heavy, mould-board iron ploughs.
Cast iron and pig iron could be converted into wrought iron and steel using a fining process. [370] [371] The Han dynasty Chinese used bronze and iron to make a range of weapons, culinary tools, carpenters' tools, and domestic wares. [372] [373] A significant product of these improved iron-smelting techniques was the manufacture of new ...
One was the use of cast iron tools and beasts of burden to pull plows, and the other was the large-scale harnessing of rivers and development of water conservation projects. The engineer Sunshu Ao of the 6th century BC and Ximen Bao of the 5th century BC are two of the oldest hydraulic engineers from China, and their works were focused on ...
The artifacts recovered from this grave are variously made of wrought iron, cast iron, malleabilized cast iron, and quench-hardened steel, with only a few, probably ornamental, bronze weapons. An illustration of furnace bellows operated by waterwheels, from the Nong Shu, by Wang Zhen, 1313 AD, during the Yuan dynasty in China
An illustration of furnace bellows operated by waterwheels, from the Nong Shu, by Wang Zhen, 1313, during the Mongol Yuan dynasty.. The Chinese, during the Han dynasty (202 BC – AD 220), were the first to apply hydraulic power (i.e. a waterwheel) in working the inflatable bellows of the blast furnace in creating cast iron.