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The characteristic of the urea core process is that a soluble urea core is used to compose the complex structure of the part's cavity.
Spherical graphite has little effect on the fracture of the matrix, so the mechanical properties of ductile iron mainly depend on the matrix structure. Therefore, the mechanical properties of ductile iron can be significantly improved through heat treatment.
Lost form casting is a casting method in which foam models similar to the size and shape of the casting are bonded and combined into model clusters.
Pickling&passivation is a common surface treatment way for stainless steel investment castings.It is a chemical process to remove surface oxidation of stainless steel castings.
17-4PH Stainless Steel is a kind of martensitic precipitation-hardening steel. The chinese speficiation is 0Cr17Ni4Cu4Nb. Adding Cu element increased the hardening property of the 17-4PH stainless steel.
