Casting is the process of melting metal and pouring it into a mold to form a predetermined object. It includes the processes of mold making, metal melting, casting and cleaning. The casting mold made of sand is more widely used, so it is also known as sand turning.
Casting is a relatively early mastery of mankind of a metal hot process, has a history of about 6000 years. China about 1700 BC ~ 1000 years ago between has entered the heyday of bronze castings, the process has reached a fairly high level. Casting is a process in which solid metal is melted into a liquid state and poured into a casting of a specific shape, to be solidified and molded.
The cast metal are: copper, iron, aluminum, tin, lead, etc., ordinary casting materials are sand, clay, water glass, resin and other auxiliary materials. Special casting casting include: investment casting, disappearing mold casting, metal casting, ceramic casting. (Raw sand includes: quartz sand, magnesium sand, zircon sand, chromite sand, magnesium olivine sand, lancet sand, graphite sand, iron sand, etc.).
Extended Information:
< p>Heating and melting metal and pouring it into a sand mold or die to solidify it into an object. Tang Xue with weak "record - equality cabinet": "(Chengkong) vowed to Jinyang Fenxi cast iron like ...... and smoke and flame rest, after the plutonium, the image is not Chengkong. Chengkong then y blamed himself, bowed his head and repented, and then made a firm promise to seek casting again." Song Shi - Le Zhi II: "At that time, some people thought that the bells and chimes did not harmonize with each other, so they ordered Deng Baoxin, Ruan Yi, and Lu Zhaoxu to review the ceremony with the Taishang and to cast the bells separately." Selected Prefectural Stories and Ballads - Making Weapons: "It is a pity that there is a lack of weapons, everything is really ready, all we need is an east wind! Feng Yunshan said: 'Why don't we try to cast them ourselves.'"
Metaphorically speaking, to create, to establish. Zhang Binglin "said example": "Since a few years ago, gradually for the progress of the generation, often simple language, to be cast." Du Pengcheng 《In the Days of Peace》Chapter 2："If such words are really uttered, an image cast with trust and respect is not destroyed at once."
Metaphorically, to cultivate and nurture. Guo Moruo, "Endeavoring to Transform Ourselves into Proletarian Cultural Workers": "If we want to cast the souls of others, we must especially endeavor to cast our own souls well." Liu Qing, "The History of Entrepreneurship," Part I, Chapter 6: "During the ten long years, she cast her daughter's heart, bit by bit, invisibly and visibly, according to her own mood."
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