Milling Machine Body 
 1. Gray casting Standard: GB976-88 GB976-67 and instead of GB5675-85 
 2. Gray cast iron features: ① good shock resistance and energy dissipation. Since graphite cast iron in favor of lubrication and oil storage, so the wear good. Similarly, the presence of graphite and gray cast iron is superior shock elimination steel. 
 ② process performance. As high carbon content of cast iron, close to the eutectic composition, it is a relatively low melting point, good fluidity, shrinkage is small, so is suitable for complex or thin-walled castings foundry. In addition, due to the cutting of graphite easy to form a processing chip breaking, so the gray cast iron can be better than cutting steel. 
 3. Use of resin sand casting casting machine bed advantages: Casting 
 (1) resin sand stiffness, the initial sand casting, high strength, this conditional use graphite cast iron solidification expansion, effectively eliminating shrinkage \ shrinkage defects, to achieve gray cast iron \ Ductile Iron less riser \ No Riser casting. 
 (2) Real polystyrene foam casting pattern used in the production, application Furan Resin sand molding. When the molten metal poured into the mold, the foam looks like liquid metal at high temperature under rapid gasification, combustion and disappear, liquid metal foam to replace the original position occupied by the cooling solidified into the same shape and look like the real-type casting. 
 In contrast, EPC for single or small batch production of automobile parts, machine tools and other large bed than the traditional sand mold has a great advantage, it not only eliminates the cost of the expensive type of wood, and ease of operation and shorten the the production cycle, improve production efficiency, with size and high precision, small allowance, good surface quality and other advantages. 

 View on the machine bed | Large Casting | Resin beams relevant content sand machine 
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