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The casting process can be divided into three basic parts, namely casting metal preparation, casting mold preparation and casting processing. Cast metal refers to the metal material used for casting castings in casting production. It is an alloy composed of a metal element as the main component and other metals or non-metal elements are added. It is customarily called casting alloy, mainly including cast iron, Cast steel and cast non-ferrous alloys.
Sand casting is one of the most widely used traditional casting processes. Sand casting is roughly divided into clay sand casting, red sand casting, and film sand casting. . Because the molding materials used in sand casting are cheap and easy to obtain, and can be used repeatedly, the processing is simple, and the sand mold manufacturing is simple and efficient, and can be adapted to both batch production and mass production of castings. For a long time, it has been casting steel, Basic traditional processes in iron, aluminum production.
With the increasing pressure on resources and environment in our country, government departments have proposed "to achieve sustainable development, build a resource-saving and environment-friendly society" and "to ensure that the energy consumption determined in the Eleventh Five-Year Plan is reduced by 20%, 10% reduction in total emissions of major pollutants.
The voltage of the socket is marked on the top of all power sockets to prevent low-voltage equipment from being mistakenly connected to high voltage. All doors are marked on the front and back of the door to indicate whether the door should be "push" or "pull". It can greatly reduce the chance of the door being damaged, and it is also very convenient for ordinary access.
In recent years, the problem of safety accidents in Chinese foundry enterprises has received more and more attention and attention. Although the Chinese government and its related organizations and units have realized the seriousness and have taken relevant measures, the effect is still not very satisfactory.
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