Sand casting
Sand casting is used to make castings with Gray Iron and ductile iron, but also Bronze, Brass, Aluminum. Molten metal is poured into a mold cavity formed out of sand (natural or synthetic), are widely applied with automotive industry, agriculture machinery, forest machinery, etc. it is including two types. One is resin sand with smooth surface and tight tolerance, suitable for big parts more than 1000kgs. The other is black sand (green sand), suitable for small parts from 10g to 1000kgs.For sand molding also have molding-machine molding (high speed, better surface and precision dimension) and manual-molding.

 

 

Process type: Green Sand casting & Rasin Sand casting
material: Aluminium & their alloy,(A356-T6 A319,ALsi9mg,alsi12cu3) copper & their alloy, Gray iron & ductileiron(65-45-12,65-40-18,80-55-6,90-60-3,100-70-2,GG20,GG25,GG30) steel and their alloy.(1020,1035,1045,4140.8625,304,316)
Normal: GB, ASTM, SAE, ISO, EN, DIN, JIS, BS
Casting tolerance: CT9-12 acc. to ISO 8062
Weight scope: Al : 50g ¨C 100kgs : Cu: 0.4kg-100kgs; steel&iron: 0.5kgs- 2000kgs
surface finishing: painting, Plating, e-coating, powder coating, polishing, variation in barrel to make it shine, anodize, are all available.
Heattreating: tempering, annealing, quenching, nomalizing,carbonize, case-harden, T5, T6
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Sunter is equipped many facilities for the green sand molding, and the resin sand molding.
Various high quality castings are made of gray iron, ductile iron, aluminum, brass etc. Quality control checks are performed throughout the casting process form screening the raw material for stability the concentration of alloy and melted by the electric furnace. We analyze the chemical elements concentration of the alloy with spark spectrometer testing before casting.
After casting and heat treatment we continue testing by metallurgical microsturctural analysis, as well as checking tensile, impact strength and surface hardness by physical test and magnetic particde etc. sand casting, sand castings