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We introduce advanced
CNC machine center to make accurate pattern,die,permanent mold.Experience design engineer makes out accurate & exact drawings as per customer's sample by measureing all the size and demensions with proper tolerance.
And then we try the new pattern in actual casting procedure,to revise and improve the pattern,mold and die by electric charge and hand repair revise.
Pattern,mold and die is very important to make good castings,so we focus on the accurate demensions and proper casting procedure including riser,pouring outer.
In a two-part mold, which is typical of sand castings, the upper half, including the top half of the pattern, flask, and core is called cope and the lower half is called drag. The parting line or the parting surface is line or surface that separates the cope and drag. The drag is first filled partially with sand, and the core print, the cores, and the gating system are placed near the parting line. The cope is then assembled to the drag, and the sand is poured on the cope half, covering the pattern, core and the gating system. The sand is compacted by vibration and mechanical means. Next, the cope is removed from the drag, and the pattern is carefully removed. The object is to remove the pattern without breaking the mold cavity. This is facilitated by designing a draft, a slight angular offset from the vertical to the vertical surfaces of the pattern. This is usually a minimum of 1?or 1.5 mm (0.060 in), whichever is greater. The rougher the surface of the pattern, the more the draft to be provided.

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