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Hongyipao (Chinese: 紅夷炮/紅衣炮; pinyin: hóngyípào; lit. 'red barbarian cannon/red coat cannon'; Vietnamese: hồng di pháo) was the Chinese name for portuguese-style muzzle-loading culverins introduced to China and Korea from the Portuguese colony of Macau and with the help of portuguese diplomats and advisors in the Beijing imperial Court like João Rodrigues.
Each of the (iron) staples (used to pin down the cannon in position) weighs 3 catties and measures 1 ft 2 in. in length. The six cast-iron bands (for strengthening the barrel) each measures 1 ft 1 in. and weighs 3 catties. The barrel holds 100 bullets, each weighing 0.5 oz. (5 qian) and 3 oz. of (gun-)powder. [36]
Of special note are the iron bands acting as reinforcements around the cannon—they indicated that the "Crouching Tiger Cannon" was a built-up cast-iron gun. [9] The iron bands were shrunk onto the barrel while red hot, and the consistently fitting bands show that the Ming Chinese foundrymen had mastered quenching in mass-production conditions ...
Blast furnace: Although cast iron tools and weapons have been found in China dating from the 5th century BC, the earliest discovered Chinese blast furnaces, which produced pig iron that could be remelted and refined as cast iron in the cupola furnace, date from the 3rd and 2nd centuries BC, and the vast majority of early blast-furnace sites ...
The san yan chong (simplified Chinese: 三眼铳; traditional Chinese: 三眼銃; lit. 'three-eyes gun') was a three barrel hand cannon used in the Ming dynasty. [1] The distinctive san yan chong, or three eyed gun, was one of the most common Ming hand cannons. Three eyed guns were usually made from cast iron or crude steel, each of the three ...
The Chinese were also the first to master cast-iron cannon barrels, and used the technology to make the earliest infantry firearms — the hand cannons. Early European guns were made of wrought iron, usually with several strengthening bands of the metal wrapped around circular wrought iron rings and then welded into a hollow cylinder. [3]
The United States has banned imports from another tranche of Chinese companies over alleged human-rights abuses involving the Uyghurs, targeting 37 textile, mining and solar companies, the ...
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 ...
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