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Sand-casting, which represents the basic process of casting would be seen. This article introduces some basic Sand Casting terminology. Flask - A moulding flask is one which holds the sand mould intact. Depending upon the position of the flask in the mould structure, it is referred by various names ... Read More
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What is the resin pre-coated shell casting procedure? Shell molding casting process is also called pre-coated resin sand casting process, hot shell molding castings or core casting process. The main molding material is the pre-coated phenolic resin sand, which is more expensive than green sand and ... Read More
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Casting is one of the earliest metal-shaping methods known to human beings. It generally means pouring molten metal into a refractory mould with a cavity of the shape to be made, and allowing it to solidify. When solidified, the desired metal object is taken out from the refractory mould either by ... Read More
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Brinell hardness method and Rockwell hardness method. Hard and brittle casting alloys are usually measured by the Rockwell hardness method, and other casting alloys are generally measured by the Brinell hardness method. For cast alloys with uniform metallographic structure such as cast steel, there ... Read More
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In all the sand casting, shell mould casting or investment casting, a mould need to be prepared for each of the castings produced. For large-scale production, making a mould for every casting to be produced may be difficult and expensive. Therefore, a permanent mould, called die may be made from ... Read More
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pre-cleaning → degreasing → water washing → rust removal → water washing → neutralization → water washing → phosphating → water washing → passivation → electrophoretic coating → tank top Cleaning → ultrafiltration water washing → drying → offline. (2) The substrate and pretreatment of the coated ... Read More
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Testing of Mechanical Properties of Castings The conventional mechanical performance testing is carried out at room temperature. The testing items usually include tensile strength, yield strength, elongation after fracture, reduction of area, deflection, and impact absorption. (Or impact toughness) ... Read More
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Generally speaking, the most widely used iron casting process is sand casting, followed by special casting methods, such as metal mold casting, investment casting, shell moulding casting, lost foam casting and vacuum casting. The sand casting process can also be divided into green sand casting, ... Read More
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As the most basic technical document in casting production, casting drawing is one of the important tools for casting technicians, casting workers and managers to express and exchange technical ideas with each other. In engineering technology, an engineering drawing used for engineering or product ... Read More
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Electrophoretic paint film has the advantages of fullness, uniformity, flatness and smooth coating. The hardness, adhesion, corrosion resistance, impact performance, and permeability of electrophoretic paint film are significantly better than other coating processes. (1) Water-soluble paint is used, ... Read More
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