| Message: | 1.Shanghai Meihong Machinery Manufacturing Co., Ltd.located in Rm.503, 1st Building , Wisdom Bay, Rd 6 Yunchuan,Baoshan District,City area,Shanghai,China,with elegant environment and convenience, market information delivered smoothly.Meihong Machinery is Meihong Machinery which is a specialized inIndustry and agriculture,Machinery and industry equipment,Casting processing.
2.Meihong MachinerySand casting is a widely used casting form. As the name suggests, it is the use of sand to make molds. Sand casting requires placing a finished part model or a wooden model (pattern) in the sand, then filling the sand in the pattern weekend, and forming the mold after unpacking the pattern. In order to remove the mold before casting the metal, the mold should be made into two or more sections; during the mold making process, holes and vent holes for casting metal into the mold must be left to synthesize the casting system. The casting mold is poured with the metal liquid for a suitable period of time until the metal solidifies. After the parts are removed, the mold is destroyed, so a new mold must be made for each casting. Sand mold processing plants can cast large parts. Sand molds can be used for iron casting, bronze casting, brass casting and aluminum casting. Wet casting is another sand casting process that is inexpensive and can produce parts of various sizes.The characteristics of sand mold casting process: the mold must be preheated; the mold must be sprayed with paint; Advantages: It can be multi-cast, save modeling materials and reduce environmental pollution; simple process, easy to realize mechanization and automation; high precision of casting, small surface roughness and good mechanical properties. Disadvantages: It is not easy to cast complex structures, thin-walled or large-sized castings; when used for casting high-melting alloys such as cast steel and cast iron, the life of the mold is short; the gray cast iron is easy to produce white-mouth structure when c |
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